技术领域Technical field
本发明涉及无线体域网领域，更具体地说，涉及一种体域网传感器同步方法、系统及可穿戴生物传感器设备。The present invention relates to the field of wireless body area networks, and more specifically, to a body area network sensor synchronization method and system and a wearable biosensor device.
背景技术Background technique
随着无线通信技术、可穿戴生物传感器技术的快速发展，可穿戴生物传感器从理论走向实际应用。通过可穿戴生物传感器，可采集各类人体生命体征参数，例如脉搏、血压、体温、血氧、呼吸等，以作为人体健康状态诊断所用。With the rapid development of wireless communication technology and wearable biosensor technology, wearable biosensors have moved from theory to practical application. Through wearable biosensors, various human vital sign parameters, such as pulse, blood pressure, body temperature, blood oxygen, respiration, etc., can be collected for diagnosis of human health status.
在穿戴式人体生命体征参数监测中，经常需要多个传感器协同工作，共同计算出临床诊断需要的目标参数。例如基于PPG（Pulse wave velocity，脉搏波波速）的连续血压测量就往往需要测量多个PPG和/或ECG（electrocardiogram，心电图）参数，如图1所示。In wearable human vital sign parameter monitoring, multiple sensors are often required to work together to jointly calculate the target parameters required for clinical diagnosis. For example, continuous blood pressure measurement based on PPG (Pulse wave velocity) often requires the measurement of multiple PPG and/or ECG (electrocardiogram) parameters, as shown in Figure 1.
上述多传感器协同的系统往往需要不同的传感器佩戴在身体的不同部位，为了让使用者感到舒适、美观，各个传感器之间需要通过无线通讯方式进行连接形成体域网（BodyArea Network， BAN），并通过体域网获取各个传感器采集的参数，以进行协同计算；另一方面，为了确保多个传感器的参数协同计算的可靠性，各个传感器之间需要参考相同的时间坐标且减小样本的时间误差。The above-mentioned multi-sensor collaborative systems often require different sensors to be worn on different parts of the body. In order to make the user feel comfortable and beautiful, the various sensors need to be connected through wireless communication to form a Body Area Network (BAN), and The parameters collected by each sensor are obtained through the body area network for collaborative calculation; on the other hand, in order to ensure the reliability of collaborative calculation of parameters of multiple sensors, each sensor needs to refer to the same time coordinate and reduce the time error of the sample .
目前，体域网内传感器网络时间同步，主要通过时间同步协议在传感器节点之间传送同步数据包。例如，参考广播同步机制（RBS），其通过从参考时钟节点向不同传感器节点发送同步消息包广播，从而消除参考节点端由于发送时间和访问时间引入的误差；传感器网络时间同步协议（TPSN）则是从参考节点向不同传感器节点发送独立的时间同步包，并根据应答包估计传感器节点的时钟偏移。然而，上述参考广播同步机制的时间估计受传感器节点接收时间和处理机制的影响，传感器网络时间同步协议则并不能完全消除发送时间、访问时间、接收时间等的影响，而这些环节又受到网络环境，程序逻辑等影响，从而影响时间估计的精度。另外，上述方案往往对传感器实现有较高的依赖性，传感器逻辑需要实现相关同步协议。At present, the time synchronization of sensor networks in body area networks mainly uses time synchronization protocols to transmit synchronization data packets between sensor nodes. For example, the Reference Broadcast Synchronization Mechanism (RBS) broadcasts synchronization message packets from a reference clock node to different sensor nodes, thereby eliminating errors introduced by the reference node due to sending time and access time; the Time Synchronization Protocol for Sensor Networks (TPSN) It sends independent time synchronization packets from the reference node to different sensor nodes, and estimates the clock offset of the sensor node based on the response packet. However, the time estimation of the above reference broadcast synchronization mechanism is affected by the reception time and processing mechanism of the sensor node. The sensor network time synchronization protocol cannot completely eliminate the effects of sending time, access time, reception time, etc., and these links are affected by the network environment. , program logic and other influences, thus affecting the accuracy of time estimation. In addition, the above solutions often have a high dependence on sensor implementation, and the sensor logic needs to implement relevant synchronization protocols.
发明内容Contents of the invention
本发明要解决的技术问题在于，针对上述体域网内传感器网络时间同步精度不足、对传感器依赖程度较高的问题，提供一种体域网传感器同步方法、系统及可穿戴生物传感器设备。The technical problem to be solved by the present invention is to provide a body area network sensor synchronization method and system and a wearable biosensor device in view of the above-mentioned problems of insufficient time synchronization accuracy of the sensor network in the body area network and high dependence on sensors.
本发明解决上述技术问题的技术方案是，提供一种体域网传感器同步方法，所述体域网包括多个可穿戴生物传感器设备以及一个同步服务终端，且每一所述可穿戴生物传感器设备包括主传感器单元和通过导线与所述主传感器单元电性连接的同步信号处理单元，多个所述可穿戴生物传感器设备的同步信号处理单元采用相同的硬件和相同的协议栈，所述方法包括：The technical solution of the present invention to solve the above technical problems is to provide a body area network sensor synchronization method. The body area network includes multiple wearable biosensor devices and a synchronization service terminal, and each of the wearable biosensor devices It includes a main sensor unit and a synchronization signal processing unit electrically connected to the main sensor unit through wires. The synchronization signal processing units of multiple wearable biosensor devices use the same hardware and the same protocol stack. The method includes :
所述同步服务终端以广播方式发送无线同步信号；The synchronization service terminal sends wireless synchronization signals in a broadcast manner;
所述可穿戴生物传感器设备的同步信号处理单元接收所述无线同步信号，并根据接收的所述无线同步信号，向相连的主传感器单元发送有线同步信号；The synchronization signal processing unit of the wearable biosensor device receives the wireless synchronization signal, and sends a wired synchronization signal to the connected main sensor unit according to the received wireless synchronization signal;
所述可穿戴生物传感器设备的主传感器单元根据从所述同步信号处理单元接收的所述有线同步信号，调整上传的人体生命体征参数中的同步标记。The main sensor unit of the wearable biosensor device adjusts the synchronization mark in the uploaded human vital sign parameters according to the wired synchronization signal received from the synchronization signal processing unit.
优选地，所述方法还包括：Preferably, the method further includes:
所述可穿戴生物传感器设备的主传感器单元在满足预设条件时，向相连的同步信号处理单元发送使能信号；The main sensor unit of the wearable biosensor device sends an enable signal to the connected synchronization signal processing unit when the preset conditions are met;
所述可穿戴生物传感器设备的同步信号处理单元在接收到所述使能信号时进入工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。The synchronization signal processing unit of the wearable biosensor device enters a working state when receiving the enable signal, and the synchronization signal processing unit only receives the wireless synchronization signal and sends a wired synchronization signal in the working state.
优选地，所述方法还包括：Preferably, the method further includes:
所述可穿戴生物传感器设备的同步信号处理单元按照预设的时间间隔切换休眠状态和工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。The synchronization signal processing unit of the wearable biosensor device switches between the sleep state and the working state according to a preset time interval, and the synchronization signal processing unit only receives the wireless synchronization signal and sends the wired synchronization signal in the working state.
优选地，所述体域网还包括数据处理终端，所述方法包括：Preferably, the body area network also includes a data processing terminal, and the method includes:
所述数据处理终端接收多个所述可穿戴生物传感器设备的主传感器单元上传的人体生命体征参数；The data processing terminal receives human body vital sign parameters uploaded by a plurality of main sensor units of the wearable biosensor device;
所述数据处理终端判断多个所述可穿戴生物传感器设备的主传感器单元上传的人体生命体征参数是否完整，并在确认所述人体生命体征参数完整时，根据人体生命体征参数中的同步标记将所有人体生命体征参数映射到同一时间坐标中。The data processing terminal determines whether the human vital sign parameters uploaded by the main sensor units of the plurality of wearable biosensor devices are complete, and when confirming that the human vital sign parameters are complete, it will be synchronized according to the synchronization mark in the human vital sign parameters. All human vital sign parameters are mapped to the same time coordinate.
本发明还提供一种体域网传感器同步系统，包括同步服务终端和多个可穿戴生物传感器设备，且每一所述可穿戴生物传感器设备包括主传感器单元和通过导线与所述主传感器单元电性连接的同步信号处理单元，多个所述可穿戴生物传感器设备的同步信号处理单元采用相同的硬件和相同的协议栈；其中：The present invention also provides a body area network sensor synchronization system, which includes a synchronization service terminal and a plurality of wearable biosensor devices, and each of the wearable biosensor devices includes a main sensor unit and is electrically connected to the main sensor unit through wires. Sexually connected synchronization signal processing units, the synchronization signal processing units of multiple wearable biosensor devices use the same hardware and the same protocol stack; wherein:
所述同步服务终端，用于以广播方式发送无线同步信号；The synchronization service terminal is used to send wireless synchronization signals in a broadcast manner;
所述同步信号处理单元，用于接收所述无线同步信号，并根据接收的所述无线同步信号，向相连的主传感器单元发送有线同步信号；The synchronization signal processing unit is configured to receive the wireless synchronization signal, and send a wired synchronization signal to the connected main sensor unit according to the received wireless synchronization signal;
所述主传感器单元，用于生成及上传人体生命体征参数，且所述主传感器单元根据从所述同步信号处理单元接收的所述有线同步信号，调整所述人体生命体征参数中的同步标记。The main sensor unit is used to generate and upload human body vital sign parameters, and the main sensor unit adjusts the synchronization mark in the human body vital sign parameters according to the wired synchronization signal received from the synchronization signal processing unit.
优选地，所述主传感器单元包括使能信号输出端，所述同步信号处理单元包括使能接收端，且所述主传感器单元的使能信号输出端与所述同步信号处理单元的使能接收端通过有线方式连接；Preferably, the main sensor unit includes an enable signal output end, the synchronization signal processing unit includes an enable receiving end, and the enable signal output end of the main sensor unit is in direct contact with the enable receiving end of the synchronization signal processing unit. The terminals are connected via wired means;
所述主传感器单元在满足预设条件时，通过使能信号输出端输出使能信号，所述同步信号处理单元的使能接收端接收到所述使能信号时进入工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。When the preset conditions are met, the main sensor unit outputs an enable signal through the enable signal output end. When the enable receiving end of the synchronization signal processing unit receives the enable signal, it enters the working state, and the synchronization The signal processing unit only receives the wireless synchronization signal and sends the wired synchronization signal in the working state.
优选地，所述同步信号处理单元包括计时器，所述同步信号处理单元根据所述计时器的计时时间切换休眠状态和工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。Preferably, the synchronization signal processing unit includes a timer, the synchronization signal processing unit switches the sleep state and the working state according to the timing time of the timer, and the synchronization signal processing unit only receives the wireless synchronization in the working state. signals as well as sending wired sync signals.
本发明还提供一种可穿戴生物传感器设备，包括主传感器单元和同步信号处理单元，且所述同步信号处理单元通过导线与所述主传感器单元电性连接；其中：The invention also provides a wearable biosensor device, including a main sensor unit and a synchronization signal processing unit, and the synchronization signal processing unit is electrically connected to the main sensor unit through wires; wherein:
所述同步信号处理单元，用于接收无线同步信号，并根据接收的所述无线同步信号，向相连的主传感器单元发送有线同步信号；The synchronization signal processing unit is used to receive wireless synchronization signals, and send wired synchronization signals to the connected main sensor unit according to the received wireless synchronization signals;
所述主传感器单元，用于生成及上传人体生命体征参数，且所述主传感器单元根据从所述同步信号处理单元接收的所述有线同步信号，调整所述人体生命体征参数中的同步标记。The main sensor unit is used to generate and upload human body vital sign parameters, and the main sensor unit adjusts the synchronization mark in the human body vital sign parameters according to the wired synchronization signal received from the synchronization signal processing unit.
优选地，所述主传感器单元包括使能信号输出端，所述同步信号处理单元包括使能接收端，且所述主传感器单元的使能信号输出端与所述同步信号处理单元的使能接收端通过有线方式连接；Preferably, the main sensor unit includes an enable signal output end, the synchronization signal processing unit includes an enable receiving end, and the enable signal output end of the main sensor unit is in direct contact with the enable receiving end of the synchronization signal processing unit. The terminals are connected via wired means;
所述主传感器单元在满足预设条件时，通过使能信号输出端输出使能信号，所述同步信号处理单元的使能接收端接收到所述使能信号时进入工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。When the preset conditions are met, the main sensor unit outputs an enable signal through the enable signal output end. When the enable receiving end of the synchronization signal processing unit receives the enable signal, it enters the working state, and the synchronization The signal processing unit only receives the wireless synchronization signal and sends the wired synchronization signal in the working state.
优选地，所述同步信号处理单元包括计时器，所述同步信号处理单元根据所述计时器的计时时间切换休眠状态和工作状态，且所述同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。Preferably, the synchronization signal processing unit includes a timer, the synchronization signal processing unit switches the sleep state and the working state according to the timing time of the timer, and the synchronization signal processing unit only receives the wireless synchronization in the working state. signals as well as sending wired sync signals.
本发明的体域网传感器同步方法、系统及可穿戴生物传感器设备，通过将时间同步协议的接收和处理逻辑集成到单一模块中，从而可减小无线同步信号的接收时间和处理机制引起的时间估计误差，降低了可穿戴生物传感器设备中主传感器单元的采样时钟的精度要求，对主传感器单元设计依赖性较小。The body area network sensor synchronization method, system and wearable biosensor device of the present invention can reduce the reception time of wireless synchronization signals and the time caused by the processing mechanism by integrating the reception and processing logic of the time synchronization protocol into a single module. The estimation error reduces the accuracy requirements of the sampling clock of the main sensor unit in the wearable biosensor device and has less dependence on the design of the main sensor unit.
附图说明Description of the drawings
图1是现有穿戴式人体生命体征参数监测的示意图；Figure 1 is a schematic diagram of existing wearable human vital sign parameter monitoring;
图2是本发明实施例提供的体域网传感器同步方法的流程示意图；Figure 2 is a schematic flow chart of a body area network sensor synchronization method provided by an embodiment of the present invention;
图3是本发明实施例提供的体域网传感器同步方法中唤醒同步信号处理单元的流程示意图；Figure 3 is a schematic flowchart of waking up the synchronization signal processing unit in the body area network sensor synchronization method provided by the embodiment of the present invention;
图4是本发明实施例提供的体域网传感器同步方法中数据处理终端处理人体生命体征参数的流程示意图；Figure 4 is a schematic flow chart of the data processing terminal processing human body vital sign parameters in the body area network sensor synchronization method provided by the embodiment of the present invention;
图5是本发明实施例提供的体域网传感器同步系统的示意图。Figure 5 is a schematic diagram of a body area network sensor synchronization system provided by an embodiment of the present invention.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.
本发明可应用于体域网，该体域网包括多个可穿戴生物传感器设备以及一个同步服务终端，其中同步服务终端可以为一个独立的、具有射频信号发射单元的设备，例如，该同步服务终端可以集成到其中一个可穿戴生物传感器设备。每一可穿戴生物传感器设备可佩戴到人体，并包括主传感器单元和同步信号处理单元，其中主传感器单元用于检测人体生命体征参数，例如脉搏、血压、体温、血氧、呼吸等，其具体可包括MCU（Micro ControlUnit，微控制单元）；同步信号接收单元用于接收无线同步信号，例如可包括用于接收射频信号的电子元件。The present invention can be applied to a body area network. The body area network includes multiple wearable biosensor devices and a synchronization service terminal. The synchronization service terminal can be an independent device with a radio frequency signal transmitting unit. For example, the synchronization service terminal The terminal can be integrated into one of the wearable biosensor devices. Each wearable biosensor device can be worn on the human body and includes a main sensor unit and a synchronous signal processing unit. The main sensor unit is used to detect human vital sign parameters, such as pulse, blood pressure, body temperature, blood oxygen, respiration, etc. The specific It may include an MCU (Micro Control Unit); the synchronization signal receiving unit is used to receive wireless synchronization signals, and may include, for example, electronic components for receiving radio frequency signals.
在本发明的实施例中，同一可穿戴生物传感器设备的主传感器单元和同步信号处理单元之间通过导线电性连接，即主传感器单元和同步信号处理单元之间通过有线方式连接，且同步信号单元可通过脉冲波、高低电平等方式向主传感器单元发送信号。并且为了保证同步的精度，上述体域网内的多个可穿戴生物传感器设备的同步信号处理单元采用相同的硬件和相同的协议栈。In the embodiment of the present invention, the main sensor unit and the synchronization signal processing unit of the same wearable biosensor device are electrically connected through wires, that is, the main sensor unit and the synchronization signal processing unit are connected in a wired manner, and the synchronization signal The unit can send signals to the main sensor unit through pulse waves, high and low levels, etc. And in order to ensure the accuracy of synchronization, the synchronization signal processing units of multiple wearable biosensor devices in the above-mentioned body area network use the same hardware and the same protocol stack.
如图2所示，是本发明实施例提供的体域网传感器同步方法的示意图，该方法用于实现体域网内多个可穿戴生物传感器设备之间的信号的时间同步。具体地，本实施例的方法包括：As shown in Figure 2, it is a schematic diagram of a body area network sensor synchronization method provided by an embodiment of the present invention. This method is used to achieve time synchronization of signals between multiple wearable biosensor devices in the body area network. Specifically, the method of this embodiment includes:
步骤S21：同步服务终端以广播方式发送无线同步信号，上述无线同步信号可通过射频方式发送。Step S21: The synchronization service terminal sends a wireless synchronization signal in a broadcast manner. The wireless synchronization signal may be sent in a radio frequency manner.
由于各个可穿戴生物传感器设备获取（即采样）人体生命体征参数的时间的估计依赖于采样率的准确性，而采样率的准确性受采样时钟的影响，各个可穿戴生物传感器设备的实际采样频率与设计采样频率可能存在偏差，且该偏差可能随温度等外部环境因素的变化而漂移。这样对于来自不同各个可穿戴生物传感器设备的人体生命体征参数，如果按照设计频率估计样本时间，可能会因为采样率误差导致样本时间错误且逐步累积，从而即使在某一时点实现了多传感器信号同步，也会逐步失去同步。在具体实现中，同步服务终端可每隔一个时间发送无线同步信号，例如以预设周期持续不断地发送无线同步信号，从而对各个可穿戴生物传感器设备进行定时校准。Since the estimation of the time for each wearable biosensor device to acquire (i.e., sample) human vital sign parameters depends on the accuracy of the sampling rate, and the accuracy of the sampling rate is affected by the sampling clock, the actual sampling frequency of each wearable biosensor device There may be a deviation from the design sampling frequency, and the deviation may drift with changes in external environmental factors such as temperature. In this way, for human vital sign parameters from different wearable biosensor devices, if the sample time is estimated according to the design frequency, the sample time may be wrong and gradually accumulated due to the sampling rate error, so that even if multi-sensor signal synchronization is achieved at a certain point in time, , will also gradually lose synchronization. In a specific implementation, the synchronization service terminal can send wireless synchronization signals every other time, for example, continuously send wireless synchronization signals at a preset period, thereby performing timing calibration on each wearable biosensor device.
步骤S22：可穿戴生物传感器设备的同步信号处理单元接收无线同步信号，并根据接收的无线同步信号，向相连的主传感器单元发送有线同步信号。Step S22: The synchronization signal processing unit of the wearable biosensor device receives the wireless synchronization signal, and sends a wired synchronization signal to the connected main sensor unit according to the received wireless synchronization signal.
具体地上述有线同步信号可通过脉冲信号或者高/低电平方式发送到主传感器单元。Specifically, the above-mentioned wired synchronization signal can be sent to the main sensor unit through a pulse signal or a high/low level method.
步骤S23：可穿戴生物传感器设备的主传感器单元根据从同步信号处理单元接收的有线同步信号，调整上传的人体生命体征参数中的同步标记。此外，上述人体生命体征参数还可包括可穿戴生物传感器设备的位置标记，当然，在实际应用中，上述位置标记也可由可穿戴生物传感器设备（或主传感器单元的ID实现）。Step S23: The main sensor unit of the wearable biosensor device adjusts the synchronization mark in the uploaded human vital sign parameters according to the wired synchronization signal received from the synchronization signal processing unit. In addition, the above-mentioned human vital sign parameters may also include the position mark of the wearable biosensor device. Of course, in practical applications, the above position mark may also be implemented by the wearable biosensor device (or the ID of the main sensor unit).
根据无线信号传递的特点，信道中的延迟可分解为4个不同的部分，分别是发送时间、访问时间、传播时间和接收时间，传统的RBS方案基本消除了前三部分引起的时延。但是接收时间部分的延迟受到协议栈、协议处理MCU、传感器MCU的工作负荷等诸多因素的影响，传统的RBS方案仍然无法解决。According to the characteristics of wireless signal transmission, the delay in the channel can be decomposed into four different parts, namely transmission time, access time, propagation time and reception time. The traditional RBS scheme basically eliminates the delay caused by the first three parts. However, the delay in the reception time is affected by many factors such as the protocol stack, protocol processing MCU, and sensor MCU workload, and the traditional RBS solution still cannot solve it.
本实施例的体域网传感器同步方法，通过将无线同步信号的协议处理部分分离到独立的硬件中，使得各个可穿戴生物传感器设备在无线同步信号接收处理过程在软硬件上一致和专一（因各个可穿戴传感器设备的同步信号处理单元采用相同的硬件和相同的协议栈），从而消除了无线同步信号在信号接收阶段的延时差异引起的误差。同时，也无需在主传感器单元中增加无线同步信号的处理逻辑，即无需针对不同的主传感器单元再开发设计相应的程序代码及误差校正逻辑，简化了主传感器单元的开发设计。The body area network sensor synchronization method of this embodiment separates the protocol processing part of the wireless synchronization signal into independent hardware, so that the wireless synchronization signal receiving and processing process of each wearable biosensor device is consistent and specific in software and hardware ( Because the synchronization signal processing units of each wearable sensor device use the same hardware and the same protocol stack), errors caused by delay differences in the signal reception stage of the wireless synchronization signal are eliminated. At the same time, there is no need to add wireless synchronization signal processing logic to the main sensor unit, that is, there is no need to develop and design corresponding program codes and error correction logic for different main sensor units, which simplifies the development and design of the main sensor unit.
具体地，可将可穿戴生物传感器设备的同步过程划分为两个时段，第一个时段是从同步服务终端发送无线同步消息到各个可穿戴生物传感器设备的同步信号处理单元的时间（T1）到同步信号处理单元产生有线同步信号的时间(T2)，第二个时段是从同步信号处理单元产生有线同步信号的时间（T2）到主传感器单元进入同步信号处理过程（一般通过中断子程序）的时间（T3），其总时间Ttotal满足以下计算式：Specifically, the synchronization process of the wearable biosensor device can be divided into two periods. The first period is from the time (T1) when the synchronization service terminal sends the wireless synchronization message to the synchronization signal processing unit of each wearable biosensor device. The time when the synchronization signal processing unit generates the wired synchronization signal (T2). The second period is from the time when the synchronization signal processing unit generates the wired synchronization signal (T2) to the time when the main sensor unit enters the synchronization signal processing process (usually through an interrupt subroutine) Time (T3), its total time Ttotal satisfies the following calculation formula:
Ttotal=(T2-T1)+(T3-T2)（1）Ttotal=(T2-T1)+(T3-T2)(1)
对于RBS方案，T1对于所有参与同步的可穿戴生物传感器设备都相同，因而对同步误差无影响；经实测，对于同一个广播同步信号，不同同步服务终端的T2值之差是us级的（实测小于1us）；而T2-T3一般取决于进入中断处理过程的时间，以AT80C51芯片为例，最多需要8个机器周期进入外部中断处理，即使在32K时钟频率下，T3-T2应该小于300us，对于常用的医用连续信号采集的单片机应用环境，时钟频率更高，通常可在几个us内进行响应，从而T2-T3也是us级的。本实施例的体域网传感器同步方法，可以实现高精度可靠的时间同步，并能够支持更高采样率信号的时间同步。For the RBS solution, T1 is the same for all wearable biosensor devices participating in synchronization, so it has no impact on the synchronization error; according to actual measurements, for the same broadcast synchronization signal, the difference in T2 values of different synchronization service terminals is us level (actual measurement Less than 1us); and T2-T3 generally depends on the time to enter the interrupt processing process. Taking the AT80C51 chip as an example, it takes up to 8 machine cycles to enter the external interrupt processing. Even at the 32K clock frequency, T3-T2 should be less than 300us. For Commonly used medical continuous signal acquisition microcontroller application environments have higher clock frequencies and can usually respond within a few us, so T2-T3 are also us level. The body area network sensor synchronization method of this embodiment can achieve high-precision and reliable time synchronization, and can support time synchronization of higher sampling rate signals.
为了减小同步信号处理单元的响应时间和响应误差，同步信号处理单元需要处于高响应状态，从而引起功耗的上升，为了降低同步信号处理单元的能耗，在本发明的另一实施例中，每一可穿戴生物传感器设备还包括计时器（该计时器可集成到主传感器单元），相应地，如图3所示，上述体域网传感器同步方法除了包括上述步骤S21-S23外还包括：In order to reduce the response time and response error of the synchronization signal processing unit, the synchronization signal processing unit needs to be in a high response state, thereby causing an increase in power consumption. In order to reduce the energy consumption of the synchronization signal processing unit, in another embodiment of the present invention , each wearable biosensor device also includes a timer (the timer can be integrated into the main sensor unit). Correspondingly, as shown in Figure 3, the above body area network sensor synchronization method includes in addition to the above steps S21-S23. :
步骤S31：可穿戴生物传感器设备的主传感器单元的计时器计时。Step S31: Timing of the timer of the main sensor unit of the wearable biosensor device.
步骤S32：主传感器单元根据计时器的计时时长判断是否满足预设条件，并在计时时长判断满足预设条件时，执行步骤S33，否则返回步骤S31继续计时。Step S32: The main sensor unit determines whether the preset condition is met according to the timing duration of the timer, and when the timing duration determines that the preset condition is met, execute step S33; otherwise, return to step S31 to continue timing.
步骤S33：主传感器单元向相连的同步信号处理单元发送使能信号（有线方式），并将计时器清零及重新启动计时，然后执行步骤S31以及步骤S34。Step S33: The main sensor unit sends an enable signal (wired mode) to the connected synchronization signal processing unit, clears the timer and restarts timing, and then executes steps S31 and S34.
步骤S34：可穿戴生物传感器设备的同步信号处理单元在接收到使能信号时进入工作状态。该同步信号处理单元仅在工作状态接收无线同步信号以及发送有线同步信号（在步骤S22中，同步信号处理单元在向主传感器单元发送有线同步信号之后即进入休眠状态）。Step S34: The synchronization signal processing unit of the wearable biosensor device enters the working state when receiving the enable signal. The synchronization signal processing unit only receives wireless synchronization signals and sends wired synchronization signals in the working state (in step S22, the synchronization signal processing unit enters the sleep state after sending the wired synchronization signal to the main sensor unit).
通过上述方式，可使同步信号处理单元仅在有限的同步时间窗内工作，其余时间则进入休眠状态，从而降低能耗，适应体域网低功耗的要求。特别地，上述计时器该可根据来自同步信号处理单元的有线同步信号校正，例如计时器可在接收到有线同步信号时清零，即二次清零。在实际应用中，主传感器单元也可在接收到来自上位机的信号时，向相连的同步信号处理单元发送使能信号。Through the above method, the synchronization signal processing unit can only work within a limited synchronization time window and enter a sleep state during the rest of the time, thereby reducing energy consumption and adapting to the low power consumption requirements of body area networks. In particular, the above-mentioned timer can be corrected according to the wired synchronization signal from the synchronization signal processing unit. For example, the timer can be cleared when receiving the wired synchronization signal, that is, it can be cleared twice. In practical applications, the main sensor unit can also send an enable signal to the connected synchronization signal processing unit when receiving a signal from the host computer.
此外，上述计时器还可集成到同步信号处理单元，相应地，同步信号处理单元可按照预设的时间间隔切换休眠状态和工作状态（该时间间隔可根据需要设置，且将休眠状态切换到工作状态与将工作状态切换到休眠状态的时间间隔不同），且同步信号处理单元仅在工作状态接收无线同步信号以及发送有线同步信号。In addition, the above timer can also be integrated into the synchronization signal processing unit. Correspondingly, the synchronization signal processing unit can switch the sleep state and the working state according to the preset time interval (the time interval can be set as needed, and the sleep state can be switched to the working state). state is different from the time interval for switching the working state to the sleep state), and the synchronization signal processing unit only receives wireless synchronization signals and sends wired synchronization signals in the working state.
在本发明的又一实施例中，上述体域网还包括数据处理终端（该数据处理终端可以为上位机，例如安装有特定应用程序的手机等），相应地，如图4所示，上述体域网传感器同步方法除了包括上述步骤S21-S23外还包括：In another embodiment of the present invention, the above-mentioned body area network also includes a data processing terminal (the data processing terminal can be a host computer, such as a mobile phone with a specific application installed, etc.). Correspondingly, as shown in Figure 4, the above-mentioned In addition to the above steps S21-S23, the body area network sensor synchronization method also includes:
步骤S41：数据处理终端接收所有可穿戴生物传感器设备的主传感器单元上传的人体生命体征参数（通过无线方式）。Step S41: The data processing terminal receives the human body vital sign parameters uploaded by the main sensor units of all wearable biosensor devices (through wireless means).
在该步骤中，数据处理终端还需要根据包含在人体生命体征参数中的同步标记和位置标记，将人体生命体征参数切割成以同步信号为分界的数据段。In this step, the data processing terminal also needs to cut the human vital sign parameters into data segments separated by the synchronization signal according to the synchronization mark and the position mark included in the human vital sign parameters.
步骤S42：数据处理终端判断多个可穿戴生物传感器设备的主传感器单元上传的人体生命体征参数是否完整，并在确认人体生命体征参数完整时，执行步骤S44，否则执行步骤S43。Step S42: The data processing terminal determines whether the human vital sign parameters uploaded by the main sensor units of the multiple wearable biosensor devices are complete, and when it is confirmed that the human vital sign parameters are complete, execute step S44, otherwise execute step S43.
由于在各个可穿戴式生物传感器设备在同步过程中，部分可穿戴式生物传感器设备的同步信号处理单元可能因为同步链路上的某种原因没有接收到无线同步信号，数据处理终端需针对该情况做出判断，即只有当所有参与同步的可穿戴式生物传感器设备都上传了含同步标记的人体生命体征参数且这些人体就健康数据位于一个时间窗内（例如2s，要求远小于同步服务终端发送无线同步信号的时间间隔）。此外，还可在同步服务终端发送的无线同步信息中增加递增的序号，该序号在同步信号处理模块发送的有线同步信号中同时传到主传感器单元，并通过主传感器单元将人体生命体征参数发送到数据处理终端，从而数据处理终端可确定不同人体生命体征参数的同步时点。During the synchronization process of each wearable biosensor device, the synchronization signal processing unit of some wearable biosensor devices may not receive the wireless synchronization signal due to some reasons on the synchronization link. The data processing terminal needs to deal with this situation. Make a judgment, that is, only when all wearable biosensor devices participating in synchronization have uploaded human vital sign parameters containing synchronization tags and these human health data are within a time window (for example, 2s, the requirement is much shorter than that sent by the synchronization service terminal) time interval of wireless synchronization signals). In addition, an incremental serial number can also be added to the wireless synchronization information sent by the synchronization service terminal. This serial number is simultaneously transmitted to the main sensor unit in the wired synchronization signal sent by the synchronization signal processing module, and the human vital sign parameters are sent through the main sensor unit. to the data processing terminal, so that the data processing terminal can determine the synchronization time points of different human vital sign parameters.
步骤S43：错误处理。具体地，数据处理终端可报错，或者直接忽略相应的人体生命体征参数。Step S43: Error handling. Specifically, the data processing terminal can report an error or directly ignore the corresponding human vital sign parameters.
步骤S44：根据人体生命体征参数中的同步标记将所有人体生命体征参数映射到同一时间坐标中，从而便于对人体健康状态进行综合判断做参考。Step S44: Map all human vital sign parameters to the same time coordinate according to the synchronization mark in the human vital sign parameters, so as to facilitate the comprehensive judgment of human health status as a reference.
具体地，假设有两个可穿戴生物传感器设备的主传感器单元，即主传感器单元A和主传感器单元B，上传了人体生命体征参数，可选择主传感器单元A的时间坐标做参考（一般选择采样率最高或时钟精度最高的主传感器单元A的信号），在相邻的同步信号之间，接收到的两个主传感器单元上传的人体生命体征参数分别是na个和nb个，na、nb分别为正整数。Specifically, assume that there are two main sensor units of the wearable biosensor device, namely main sensor unit A and main sensor unit B. Human vital sign parameters are uploaded. The time coordinate of main sensor unit A can be selected as a reference (generally, sampling is selected The signal of the main sensor unit A with the highest rate or the highest clock accuracy), between the adjacent synchronization signals, the human vital sign parameters uploaded by the two main sensor units received are na and nb respectively, na and nb respectively. is a positive integer.
对于主传感器单元A在同步标记段内发送的na个人体生命体征参数，第i个人体生命体征参数相对于同步标记的估计时间Ta[i]满足：For na human vital sign parameters sent by the main sensor unit A within the synchronization mark segment, the estimated time Ta[i] of the i-th human vital sign parameter relative to the synchronization mark satisfies:
Ta[i]=Pa×i（2）Ta[i]=Pa×i(2)
其中i=0，…，na，Pa为主传感器单元A的设计采样周期（例如设计采样频率为100Hz，则Pa=0.01s）。Among them, i=0,..., na, Pa is the design sampling period of the main sensor unit A (for example, the design sampling frequency is 100Hz, then Pa=0.01s).
对于主传感器单元B在同步标记段内发送的nb个人体生命体征参数，第j个人体生命体征参数相对于同步标记的估计时间Tb[j]满足：For nb human vital sign parameters sent by the main sensor unit B within the synchronization mark segment, the estimated time Tb[j] of the jth human vital sign parameter relative to the synchronization mark satisfies:
Tb[j]=Pa×j ×na/nb（3）Tb[j]=Pa×j×na/nb (3)
其中j=0，…，nb， Pa为主传感器单元A的设计采样周期。Where j=0,...,nb, Pa is the design sampling period of the main sensor unit A.
如图5所示，本发明实施例还提供一种体域网传感器同步系统，该体域网传感器同步系统可应用于体域网，且该体域网传感器同步系统包括同步服务终端51和多个可穿戴生物传感器设备52，且每一可穿戴生物传感器设备52包括主传感器单元521和同步信号处理单元522，且在每一可穿戴生物传感器设备52中，主传感器单元521和同步信号处理单元522通过导线电性连接。上述多个可穿戴生物传感器设备52的同步信号处理单元521采用相同的硬件和相同的协议栈。As shown in Figure 5, an embodiment of the present invention also provides a body area network sensor synchronization system. The body area network sensor synchronization system can be applied to the body area network, and the body area network sensor synchronization system includes a synchronization service terminal 51 and a multi-body area network sensor synchronization system. A wearable biosensor device 52, and each wearable biosensor device 52 includes a main sensor unit 521 and a synchronization signal processing unit 522, and in each wearable biosensor device 52, the main sensor unit 521 and the synchronization signal processing unit 522 is electrically connected through wires. The synchronization signal processing units 521 of the above-mentioned multiple wearable biosensor devices 52 use the same hardware and the same protocol stack.
上述同步服务终端51包括无线信号发射单元，并通过无线信号发射单元以广播方式发送无线同步信号；同步信号处理单元521用于接收无线同步信号，并根据接收的所述无线同步信号，向相连的主传感器单元发送有线同步信号；主传感器单元522用于生成及上传人体生命体征参数，且上述主传感器单元522根据从同步信号处理单元521接收的所述有线同步信号，调整人体生命体征参数中的同步标记。主传感器单元522可将上述人体生命体征参数以无线方式上传到上位机。The above-mentioned synchronization service terminal 51 includes a wireless signal transmitting unit, and transmits wireless synchronization signals in a broadcast manner through the wireless signal transmitting unit; the synchronization signal processing unit 521 is used to receive wireless synchronization signals, and according to the received wireless synchronization signals, to the connected The main sensor unit sends a wired synchronization signal; the main sensor unit 522 is used to generate and upload human body vital sign parameters, and the above-mentioned main sensor unit 522 adjusts the human body vital sign parameters according to the wired synchronization signal received from the synchronization signal processing unit 521 Sync mark. The main sensor unit 522 can wirelessly upload the above human body vital sign parameters to the host computer.
在本发明的一个实施例中，主传感器单元522可包括使能信号输出端，相应地，同步信号处理单元521包括使能接收端，且主传感器单元522的使能信号输出端与同步信号处理单元521的使能接收端通过有线方式连接；主传感器单元522在满足预设条件时，通过使能信号输出端输出使能信号，同步信号处理单元521的使能接收端接收到使能信号时进入工作状态，且同步信号处理单元521仅在工作状态接收无线同步信号以及发送有线同步信号。通过上述方式，可在保证同步信号处理单元521的响应时间和响应误差的同时，降低同步信号处理单元521的能耗，满足可穿戴生物传感器设备的低能耗要求。In one embodiment of the present invention, the main sensor unit 522 may include an enable signal output terminal. Correspondingly, the synchronization signal processing unit 521 includes an enable receiving terminal, and the enable signal output terminal of the main sensor unit 522 is related to the synchronization signal processing unit. The enable receiving end of the unit 521 is connected in a wired manner; when the preset conditions are met, the main sensor unit 522 outputs an enable signal through the enable signal output end, and when the enable receiving end of the synchronization signal processing unit 521 receives the enable signal Enter the working state, and the synchronization signal processing unit 521 only receives wireless synchronization signals and sends wired synchronization signals in the working state. Through the above method, the energy consumption of the synchronization signal processing unit 521 can be reduced while ensuring the response time and response error of the synchronization signal processing unit 521, thereby meeting the low energy consumption requirements of wearable biosensor devices.
具体地，每一可穿戴生物传感器设备22包括计时器（该计时器可集成到主传感器单元222），且主传感器单元222的使能信号输出端根据上述计时器的计时时间（即达到预设的计时时间）输出使能信号，即主传感器单元222在计时器达到预设的计时时间时确认满足预设条件。特别地，上述计时器还可根据来自同步信号处理单元的有线同步信号校正，例如计时器可在接收到有线同步信号时清零（或在达到预设的计时时间后清零）。Specifically, each wearable biosensor device 22 includes a timer (the timer can be integrated into the main sensor unit 222), and the enable signal output end of the main sensor unit 222 is activated according to the timing time of the above timer (that is, when the preset timer is reached). timing time) to output an enable signal, that is, the main sensor unit 222 confirms that the preset condition is met when the timer reaches the preset timing time. In particular, the above-mentioned timer can also be corrected based on the wired synchronization signal from the synchronization signal processing unit. For example, the timer can be cleared when the wired synchronization signal is received (or cleared after reaching a preset timing time).
此外，主传感器单元222集成有信号接收电路（例如蓝牙信号接收电路），且主传感器单元222在信号接收电路接收到上位机的唤醒信号时通过使能信号输出端输出使能信号，即主传感器单元222在接收到唤醒信号时确认满足预设条件。特别地，上位机可在发送唤醒信号后的预设时间内，使同步信号处理单元221发送无线同步信号。In addition, the main sensor unit 222 is integrated with a signal receiving circuit (such as a Bluetooth signal receiving circuit), and when the signal receiving circuit receives the wake-up signal of the host computer, the main sensor unit 222 outputs an enable signal through the enable signal output terminal, that is, the main sensor Unit 222 confirms that the preset condition is met when receiving the wake-up signal. In particular, the host computer can cause the synchronization signal processing unit 221 to send the wireless synchronization signal within a preset time after sending the wake-up signal.
在实际应用中，也可在上述同步信号处理单元521内置计时器，同步信号处理单元521根据计时器的计时时间切换休眠状态和工作状态，且同步信号处理单元521仅在工作状态接收无线同步信号以及发送有线同步信号。该结构同样可以兼顾响应时间、响应误差要求，以及低能耗要求。In practical applications, a timer can also be built into the above-mentioned synchronization signal processing unit 521. The synchronization signal processing unit 521 switches between the sleep state and the working state according to the timing time of the timer, and the synchronization signal processing unit 521 only receives wireless synchronization signals in the working state. and sending wired synchronization signals. This structure can also take into account response time, response error requirements, and low energy consumption requirements.
本实施例中的体域网传感器同步系统与上述图1-4对应实施例中的体域网传感器同步方法属于同一构思，其具体实现过程详细见对应的方法实施例，且方法实施例中的技术特征在本系统实施例中均对应适用，这里不再赘述。The body area network sensor synchronization system in this embodiment belongs to the same concept as the body area network sensor synchronization method in the corresponding embodiment of Figures 1-4. For details of its implementation process, please refer to the corresponding method embodiment, and in the method embodiment The technical features are all applicable in the embodiments of this system and will not be described again here.
本发明实施例还提供一种可穿戴生物传感器设备，可穿戴生物传感器设备包括主传感器单元和同步信号处理单元，且同步信号处理单元通过导线与主传感器单元电性连接；其中：同步信号处理单元用于接收无线同步信号，并根据接收的无线同步信号，向相连的主传感器单元发送有线同步信号；主传感器单元用于生成及上传人体生命体征参数，且主传感器单元根据从同步信号处理单元接收的有线同步信号，调整人体生命体征参数中的同步标记。Embodiments of the present invention also provide a wearable biosensor device. The wearable biosensor device includes a main sensor unit and a synchronization signal processing unit, and the synchronization signal processing unit is electrically connected to the main sensor unit through wires; wherein: the synchronization signal processing unit Used to receive wireless synchronization signals, and send wired synchronization signals to the connected main sensor unit according to the received wireless synchronization signals; the main sensor unit is used to generate and upload human body vital sign parameters, and the main sensor unit receives the synchronization signal from the slave synchronization signal processing unit. The wired synchronization signal adjusts the synchronization mark in the human body vital sign parameters.
在上述可穿戴生物传感器设备的一个实施例中，上述主传感器单元包括使能信号输出端，同步信号处理单元包括使能接收端，且主传感器单元的使能信号输出端与所述同步信号处理单元的使能接收端通过有线方式连接；主传感器单元在满足预设条件时，通过使能信号输出端输出使能信号，同步信号处理单元的使能接收端接收到使能信号时进入工作状态，且同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。In one embodiment of the above-mentioned wearable biosensor device, the above-mentioned main sensor unit includes an enable signal output end, the synchronization signal processing unit includes an enable receiving end, and the enable signal output end of the main sensor unit is connected to the synchronization signal processing unit. The enable receiving end of the unit is connected through wires; when the main sensor unit meets the preset conditions, it outputs the enable signal through the enable signal output end, and the enable receiving end of the synchronization signal processing unit enters the working state when it receives the enable signal. , and the synchronization signal processing unit only receives the wireless synchronization signal and sends the wired synchronization signal in the working state.
在上述可穿戴生物传感器设备的另一实施例中，同步信号处理单元包括计时器，同步信号处理单元根据计时器的计时时间切换休眠状态和工作状态，且同步信号处理单元仅在工作状态接收所述无线同步信号以及发送有线同步信号。In another embodiment of the above-mentioned wearable biosensor device, the synchronization signal processing unit includes a timer, the synchronization signal processing unit switches the sleep state and the working state according to the timing time of the timer, and the synchronization signal processing unit only receives all the data in the working state. wireless synchronization signals and sending wired synchronization signals.
本实施例中的可穿戴生物传感器设备与上述图1-4对应实施例中的体域网传感器同步方法属于同一构思，其具体实现过程详细见对应的方法实施例，且方法实施例中的技术特征在本设备实施例中均对应适用，这里不再赘述。The wearable biosensor device in this embodiment belongs to the same concept as the body area network sensor synchronization method in the corresponding embodiment of Figures 1-4. For details of its implementation process, see the corresponding method embodiment, and the technology in the method embodiment The features are all applicable to the embodiments of this device and will not be described again here.
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should be understood that the sequence number of each step in the above embodiment does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元、模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能单元、模块完成。实施例中的各功能单元、模块可以集成在一个处理器中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中，上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。另外，各功能单元、模块的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述系统中单元、模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional units and modules is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs. Module completed. Each functional unit and module in the embodiment can be integrated into a processor, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be hardware-based. It can also be implemented in the form of software functional units. In addition, the specific names of each functional unit and module are only for the convenience of distinguishing each other and are not used to limit the scope of protection of the present application. For the specific working processes of the units and modules in the above system, please refer to the corresponding processes in the foregoing method embodiments, and will not be described again here.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。In the above embodiments, each embodiment is described with its own emphasis. For parts that are not detailed or documented in a certain embodiment, please refer to the relevant descriptions of other embodiments.
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.
在本申请所提供的实施例中，应该理解到，所揭露的体域网传感器同步方法、系统及可穿戴生物传感器设备，可以通过其它的方式实现。例如，以上所描述的体域网传感器同步系统实施例仅仅是示意性的。In the embodiments provided in this application, it should be understood that the disclosed body area network sensor synchronization method, system and wearable biosensor device can be implemented in other ways. For example, the above-described embodiments of the body area network sensor synchronization system are only illustrative.
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still implement the above-mentioned implementations. The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of this application, and should be included in within the protection scope of this application.
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| CN202010540010.XACN111787606B (en) | 2020-06-12 | 2020-06-12 | Body area network sensor synchronization method, body area network sensor synchronization system and wearable biosensor equipment |
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| TR01 | Transfer of patent right | Effective date of registration:20250429 Address after:Building 6, Science and Technology Innovation Park, Poyang High tech Project Zone, Lushan Industrial Park, Jiujiang City, Jiangxi Province 332099 Patentee after:Jiangxi Ruimeng Innovative Medical Technology Co.,Ltd. Country or region after:China Address before:518000 No.504, No.4 workshop, Tonglixing industrial plant, No.8 lanzhudong Road, Zhukeng community, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee before:Ruimeng (Shenzhen) Medical Technology Co.,Ltd. Country or region before:China |