技术领域technical field
本发明涉及射频识别（RFID）领域和商品防盗领域。可用于商品的防盗与监管，同时在商品丢失后，在一定程度上可实现对丢失物品的追踪。具体涉及一种基于2.4GHz无线射频芯片的可恢复低功耗防盗系统及方法。The invention relates to the fields of radio frequency identification (RFID) and commodity anti-theft. It can be used for anti-theft and supervision of goods, and at the same time, after the goods are lost, it can track the lost items to a certain extent. Specifically relates to a recoverable low power consumption anti-theft system and method based on a 2.4GHz wireless radio frequency chip.
背景技术Background technique
近些年来，随着各种大型超市的拔地而起，Thinkpad体验馆，Apple体验馆等各种电子产品体验馆也越来越多。如何能在不影响各种新鲜商品体验度的情况下，又可以很好的完成商品的防盗方面提出了很多挑战。传统的商品防盗系统主要有无线电系统、电磁波系统、分频系统、智慧型系统和射频系统。In recent years, with the rise of various large supermarkets, there are more and more electronic product experience halls such as Thinkpad experience halls and Apple experience halls. How to effectively complete the anti-theft of products without affecting the experience of various fresh products poses many challenges. Traditional commodity anti-theft systems mainly include radio systems, electromagnetic wave systems, frequency division systems, intelligent systems and radio frequency systems.
无线电系统最大优点是系统成本非常低、安装方便。但由于其防盗标签为环形线圈式，所以系统易受一些物品的干扰，如收银机等电子产品、金属物等等，引起系统的误报或不报。The biggest advantage of the radio system is that the system cost is very low and it is easy to install. However, because the anti-theft tag is a ring coil type, the system is susceptible to interference from some items, such as cash registers and other electronic products, metal objects, etc., causing false alarms or no alarms in the system.
电磁波系统的标签最小，标签价格也便宜,能重复消磁,但易受磁性或金属物质的影响而产生误报。分频系统是采用高科技分频技术和超低频无线电波信号的防盗系统，该系统标签轻、体积小，价格便宜,性能稳定,检测率高，抗干扰性好，不易引起误报。产品有立式和隐蔽型两种。是服装服饰店较为理想的防盗系统。智慧型系统应用独有的技术,是一个内部由集成电路控制、电池驱动、集硬标签与报警器组为一体的系统。当标签被撬或是随商品一起被拿出商场时,系统便自动发出报警。该系统能使整个商场范围内的商品均受到保护,无误报,标签可重复使用,不损伤商品。适用于保护贵重物品,如时装、皮革、裘衣等。射频防盗系统运用射频技术，可以实现长距离的监控，并且其防碰撞性能优良。例如已经出现的母婴防盗就采用了2.4GHz的射频技术，保证婴儿的安全。该系统可以准确识别其电子标签的信息，可实现远距离的传输。但是作为有源电子标签，功耗问题有待进一步解决。The label of the electromagnetic wave system is the smallest, the price of the label is also cheap, and it can be degaussed repeatedly, but it is susceptible to false positives due to the influence of magnetism or metal substances. The frequency division system is an anti-theft system using high-tech frequency division technology and ultra-low frequency radio wave signals. The system has light tags, small size, cheap price, stable performance, high detection rate, good anti-interference, and is not easy to cause false alarms. There are two types of vertical and concealed products. It is an ideal anti-theft system for clothing stores. The intelligent system applies unique technology and is a system that is controlled by integrated circuits, driven by batteries, and integrates hard tags and alarms. When the label is pried or taken out of the mall together with the goods, the system will automatically send out an alarm. The system can protect the products in the whole shopping mall without false positives, the labels can be reused, and the products will not be damaged. Suitable for protecting valuables, such as fashion, leather, fur clothing and so on. The radio frequency anti-theft system uses radio frequency technology, which can realize long-distance monitoring, and its anti-collision performance is excellent. For example, the anti-theft mother and child that have appeared have adopted 2.4GHz radio frequency technology to ensure the safety of babies. The system can accurately identify the information of its electronic tags, and can realize long-distance transmission. But as an active electronic tag, the problem of power consumption needs to be further solved.
现有技术，例如无线电系统，电磁波系统，分频系统和智慧系统，其对电子标签的检测距离一般都在1m以内，监控距离非常有限，也正是因为这个原因，这些防盗系统无法实现对遗失的电子标签追踪的功能除此之外，电磁波系统，分频洗头膏和智慧系统都无法得到丢失电子标签的具体信息，换言之，也就是在收到报警信号的时候，无法了解到是具体哪个商品被盗。射频防盗虽然监控距离比较远，但是现有的射频防盗技术，其电子标签的状态单一，不仅不利于系统的稳定性，容易产生错误报警的情况，还不利于降低电子标签的功耗，延长其使用寿命。Existing technologies, such as radio systems, electromagnetic wave systems, frequency division systems and intelligent systems, generally have a detection distance of electronic tags within 1m, and the monitoring distance is very limited. It is for this reason that these anti-theft systems cannot detect lost In addition to the electronic tag tracking function, the electromagnetic wave system, frequency division shampoo and smart system cannot obtain the specific information of the lost electronic tag. In other words, when an alarm signal is received, it is impossible to know which one Merchandise is stolen. Although the monitoring distance of radio frequency anti-theft is relatively long, the existing radio frequency anti-theft technology has a single state of the electronic tag, which is not conducive to the stability of the system and is prone to false alarms. It is also not conducive to reducing the power consumption of the electronic tag and extending its life. service life.
发明内容Contents of the invention
本发明主要是解决现有技术所存在的技术问题；提供了一种通过唤醒芯片进一步降低了电子标签的功耗，并且增加唤醒装置，恢复追踪装置，上位机，并且配有独特的软件设计，实现电子标签在多个工作状态中定时自动转换。以达到扩展电子标签的实用性和延长使用寿命的目的的基于2.4GHz无线射频芯片的可恢复低功耗防盗系统及方法。The present invention mainly solves the technical problems existing in the prior art; it provides a way to further reduce the power consumption of the electronic tag by waking up the chip, and adds a wake-up device, a recovery tracking device, and a host computer, and is equipped with a unique software design, Realize the timing and automatic conversion of electronic tags in multiple working states. A recoverable low-power anti-theft system and method based on a 2.4GHz wireless radio frequency chip to achieve the purpose of extending the practicability and prolonging the service life of electronic tags.
本发明的上述技术问题主要是通过下述技术方案得以解决的：Above-mentioned technical problem of the present invention is mainly solved by following technical scheme:
一种基于2.4GHz无线射频芯片的可恢复低功耗防盗系统，包括电子标签与监控装置，其中：A recoverable low-power anti-theft system based on a 2.4GHz radio frequency chip, including electronic tags and monitoring devices, wherein:
所述电子标签包括微处理器，射频收发模块，唤醒芯片和纽扣电池；其中射频收发模块包括天线以及与天线连接的2.4GHz无线收发射频芯片；纽扣电池与微处理器，射频收发模块和唤醒芯片连接，为三者提供电能。微处理器与射频收发模块连接，二者之间存在信息的交互；同时还与唤醒芯片连接，将接收到的唤醒/待机信号传输给唤醒芯片；其电源引脚与纽扣电池相连。The electronic tag includes a microprocessor, a radio frequency transceiver module, a wake-up chip and a button battery; wherein the radio frequency transceiver module includes an antenna and a 2.4GHz wireless transceiver radio frequency chip connected to the antenna; a button battery and a microprocessor, a radio frequency transceiver module and a wake-up chip connected to provide power to all three. The microprocessor is connected to the radio frequency transceiver module, and there is information interaction between the two; it is also connected to the wake-up chip to transmit the received wake-up/standby signal to the wake-up chip; its power pin is connected to the button battery.
所述监控装置包括纽扣电池，射频收发模块，微处理器和蜂鸣器；其中射频收发模块包括天线以及与天线连接的2.4GHz无线收发射频芯片构成，天线接收电子标签发出的标签信息，经射频芯片下变频后传给微处理器进行处理，且能向上位机传递丢失物品标签信息。微处理器与射频收发模块相连，一旦接收到正确的标签信息便控制与之连接的蜂鸣器报警。蜂鸣器与微处理器连接，起商品丢失报警的作用。The monitoring device includes a button battery, a radio frequency transceiver module, a microprocessor and a buzzer; wherein the radio frequency transceiver module includes an antenna and a 2.4GHz wireless transceiver radio frequency chip connected to the antenna to form, and the antenna receives the label information sent by the electronic label, and passes through the radio frequency After the chip is down-converted, it is transmitted to the microprocessor for processing, and can transmit the label information of the lost item to the host computer. The microprocessor is connected with the radio frequency transceiver module, once the correct label information is received, it will control the connected buzzer to alarm. The buzzer is connected with the microprocessor and functions as an alarm for lost goods.
本发明不仅将监控距离提升到了50m，在发出报警信号的同时，将被盗商品的信息发送给上位机。它还通过软件实现电子标签在多个状态中自动切换，实现可重复使用，降低功耗的目的。除此之外，他还增加了恢复追踪装置，可以实现室外100m范围的追踪。The invention not only increases the monitoring distance to 50m, but also sends the information of the stolen goods to the host computer while sending out the alarm signal. It also realizes the automatic switching of electronic tags in multiple states through software, so as to realize the purpose of reusability and reduce power consumption. In addition, he also added a recovery tracking device, which can achieve outdoor tracking within a range of 100m.
在上述的一种基于2.4GHz无线射频芯片的可恢复低功耗防盗方法，包括：The above-mentioned recoverable low-power anti-theft method based on a 2.4GHz radio frequency chip includes:
步骤1，唤醒装置与监控装置均接通外接电源，系统一旦启动，唤醒装置将始终处于发送状态，监控装置将始终处于接收状态，并与上位机实时通讯；Step 1. Both the wake-up device and the monitoring device are connected to the external power supply. Once the system is started, the wake-up device will always be in the sending state, and the monitoring device will always be in the receiving state, and communicate with the host computer in real time;
步骤2，手持的恢复与追踪装置由两节5号电池供电，在其不使用的时候处于关机状态，开机后，通过两个按键，分别选择其处于恢复模式还是追踪模式，信息通过手持恢复追踪装置的LCD显示屏显示；Step 2. The hand-held recovery and tracking device is powered by two AA batteries. When it is not in use, it is turned off. After turning it on, press two buttons to select whether it is in the recovery mode or the tracking mode, and the information is recovered and tracked through the hand-held device. The LCD display of the device displays;
步骤3，当电子标签处于安全区域时，其处于待机状态，MCU处于待机状态，射频收发芯片处于关机状态均，只有唤醒芯片处于工作状态。当期被唤醒后，由于电子标签对一个处于唤醒状态的标签进行恢复，最长需要2s的时间。为达到较精确的监控目的，每0.2s内发送10次数据，每2s内接收3次数据，其他时段处于待机状态。Step 3, when the electronic tag is in the safe area, it is in the standby state, the MCU is in the standby state, the radio frequency transceiver chip is in the shutdown state, and only the wake-up chip is in the working state. After being woken up in the current period, since the electronic tag recovers a tag in the wake-up state, it takes up to 2s. In order to achieve a more accurate monitoring purpose, data is sent 10 times every 0.2s, data is received 3 times every 2s, and the rest of the time is in a standby state.
在上述的一种基于2.4GHz无线射频芯片的可恢复低功耗防盗方法，当整套防盗系统运作时，电子标签处于待机状态，唤醒装置始终发送唤醒信号，监控装置始终接收报警信号，手持恢复追踪装置始终处于关机或待机状态，监控装置在没有收到电子标签数据的时候，不与上位机进行通信。In the above-mentioned recoverable low-power anti-theft method based on 2.4GHz wireless radio frequency chips, when the entire anti-theft system is in operation, the electronic tag is in a standby state, the wake-up device always sends a wake-up signal, the monitoring device always receives an alarm signal, and the handheld resumes tracking. The device is always in shutdown or standby state, and the monitoring device does not communicate with the host computer when it does not receive the electronic tag data.
在上述的一种基于2.4GHz无线射频芯片的可恢复低功耗防盗方法，当电子标签被移动到安全区域以外，将被唤醒装置唤醒，处于唤醒状态。这时，监控装置便能收到被唤醒电子标签的数据，监控装置一旦收到正确的标签数据，便启动蜂鸣器，同时将收到的电子标签的数据传给上位机，在数据库中检索被盗商品的信息。若电子标签被移动到户外，保安人员可携带手持恢复追踪装置在户外对电子标签进行追踪，若电子标签被成功找回，可使用手持恢复追踪装置将电子标签恢复到待机状态，当手持恢复追踪装置发送与某个电子标签所携带信息所匹配的恢复信号时，只恢复这一个电子标签，当期发送通用的恢复信号时，可同时恢复多个电子标签。In the above-mentioned recoverable low-power anti-theft method based on a 2.4GHz radio frequency chip, when the electronic tag is moved out of the safe area, it will be woken up by the wake-up device and is in a wake-up state. At this time, the monitoring device can receive the data of the awakened electronic tag. Once the monitoring device receives the correct tag data, it will start the buzzer, and at the same time transmit the received data of the electronic tag to the host computer for retrieval in the database. Information about stolen merchandise. If the electronic tag is moved outdoors, the security personnel can carry the handheld recovery tracking device to track the electronic tag outdoors. If the electronic tag is successfully retrieved, the electronic tag can be restored to the standby state by using the handheld recovery tracking device. When the handheld recovery tracking When the device sends a restoration signal that matches the information carried by a certain electronic tag, it only restores this electronic tag. When sending a general restoration signal at the same time, it can restore multiple electronic tags at the same time.
因此，本发明具有如下优点：不仅将监控距离提升到了50m，在发出报警信号的同时，将被盗商品的信息发送给上位机。能够实现电子标签在多个状态中自动切换，实现可重复使用，降低功耗。除此之外，增加的恢复追踪装置，可以实现室外100m范围的追踪。Therefore, the present invention has the following advantages: not only the monitoring distance is increased to 50m, but also the information of the stolen goods is sent to the upper computer while sending out the alarm signal. It can realize automatic switching of electronic tags in multiple states, realize reusability and reduce power consumption. In addition, the added recovery tracking device can achieve outdoor tracking within a range of 100m.
附图说明Description of drawings
图1是本发明的电子标签结构示意图。Fig. 1 is a schematic diagram of the structure of the electronic tag of the present invention.
图2是本发明的监控装置结构示意图。Fig. 2 is a schematic structural diagram of the monitoring device of the present invention.
图3是本发明的恢复追踪装置结构示意图。Fig. 3 is a schematic structural diagram of the recovery tracking device of the present invention.
图4是本发明的唤醒装置结构示意图。Fig. 4 is a schematic structural diagram of the wake-up device of the present invention.
具体实施方式detailed description
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
实施例：Example:
本方法的基本思想是增加唤醒装置提高防盗系统的稳定性，配合标签的待机状态，降低待机功耗；增加恢复追踪装置扩展了防盗系统的应用领域和功能；通过在电子标签中增加唤醒芯片，降低电子标签的待机功耗；通过软件设计，使电子标签可配合整套系统正常工作，并且降低电子标签在唤醒状态下的功耗。The basic idea of this method is to increase the stability of the anti-theft system by adding a wake-up device, cooperate with the standby state of the label, and reduce the standby power consumption; adding a recovery tracking device expands the application field and function of the anti-theft system; by adding a wake-up chip to the electronic label, Reduce the standby power consumption of the electronic tag; through software design, the electronic tag can work normally with the entire system, and reduce the power consumption of the electronic tag in the wake-up state.
整套防盗系统，包括电子标签，唤醒装置，监控装置，追踪恢复装置均采用超低功耗单片机作为MCU（微控制器）作为控制芯片，采用2.4GHz射频收发芯片作为无线收发芯片。其中电子标签采用125KHz的唤醒芯片实现其从睡眠状态到唤醒状态转变的功能，唤醒装置使用唤醒芯片发送125KHz射频信号唤醒电子标签。天线部分采用集成在PCB版上的一般天线便可。The entire anti-theft system, including electronic tags, wake-up devices, monitoring devices, and tracking and recovery devices, uses ultra-low-power single-chip microcomputers as MCUs (microcontrollers) as control chips, and 2.4GHz radio frequency transceiver chips as wireless transceiver chips. Among them, the electronic tag uses a 125KHz wake-up chip to realize its function of transition from sleep state to wake-up state, and the wake-up device uses the wake-up chip to send a 125KHz radio frequency signal to wake up the electronic tag. The antenna part can use the general antenna integrated on the PCB board.
MCU处于待机状态时，其功耗可低至0.1uA，当射频收发芯片处于待机状态与关机状态时其功耗分别低至12uA，900nA。当射频收发芯片处于发送状态与接收状态时，其功耗分别为13mA和19mA。使用集成在PCB版上的一般天线，其传输距离经过测试可达30m，此距离已大大超出一般室内防盗系统的监测距离。若使用外接天线，传输距离可达100m以上。When the MCU is in the standby state, its power consumption can be as low as 0.1uA, and when the RF transceiver chip is in the standby state and off state, its power consumption is as low as 12uA and 900nA respectively. When the RF transceiver chip is in the sending state and receiving state, its power consumption is 13mA and 19mA respectively. Using the general antenna integrated on the PCB board, its transmission distance has been tested up to 30m, which has greatly exceeded the monitoring distance of general indoor anti-theft systems. If an external antenna is used, the transmission distance can reach more than 100m.
整套系统工作时，唤醒装置与监控装置均接通外接电源，不需要考虑功耗问题，系统一旦启动，唤醒装置将始终处于发送状态，监控装置将始终处于接收状态，并与上位机实时通讯。手持的恢复与追踪装置由两节5号电池供电，在其不使用的时候处于关机状态，开机后，通过两个按键，分别选择其处于恢复模式还是追踪模式，相关信息通过手持恢复追踪装置的LCD显示屏显示。由于电子标签软件设计的特点，对一个处于唤醒状态的标签进行恢复，最长需要2s的时间。当电子标签处于安全区域时（未接近唤醒装置），其处于待机状态，MCU处于待机状态，射频收发芯片处于关机状态均，只有唤醒芯片处于工作状态。当期被唤醒后，为达到较精确的监控目的，每0.2s内发送10次数据，每2s内接收3次数据，其他时段处于待机状态（由于人在室内移动速度小于5m/s，所以这样的发送频率可实现室内米级的定位）。When the whole system is working, both the wake-up device and the monitoring device are connected to the external power supply, and there is no need to consider power consumption. Once the system is started, the wake-up device will always be in the sending state, and the monitoring device will always be in the receiving state, and communicate with the host computer in real time. The hand-held recovery and tracking device is powered by two AA batteries. When it is not in use, it is turned off. After turning it on, press two buttons to select whether it is in the recovery mode or the tracking mode. The relevant information is passed through the hand-held recovery tracking device The LCD display shows. Due to the characteristics of electronic tag software design, it takes up to 2s to restore a tag that is in the wake-up state. When the electronic tag is in the safe area (not close to the wake-up device), it is in the standby state, the MCU is in the standby state, the RF transceiver chip is in the shutdown state, and only the wake-up chip is in the working state. After being woken up in the current period, in order to achieve more accurate monitoring purposes, data is sent 10 times every 0.2s, data is received 3 times every 2s, and the rest of the time is on standby (because people move indoors at a speed less than 5m/s, so such The sending frequency can realize indoor meter-level positioning).
当整套防盗系统运作时，电子标签处于待机状态，唤醒装置始终发送唤醒信号，监控装置始终接收报警信号，手持恢复追踪装置始终处于关机或待机状态，监控装置在没有收到电子标签数据的时候，不与上位机进行通信。When the whole set of anti-theft system is in operation, the electronic tag is in the standby state, the wake-up device always sends a wake-up signal, the monitoring device always receives the alarm signal, and the hand-held recovery tracking device is always in the shutdown or standby state. When the monitoring device does not receive the electronic tag data, Do not communicate with the host computer.
当电子标签被移动到安全区域以外，将被唤醒装置唤醒，处于唤醒状态。这时，监控装置便能收到被唤醒电子标签的数据，监控装置一旦收到正确的标签数据，便启动报警装置（报警器），同时将收到的电子标签的数据传给上位机，在数据库中检索被盗商品的信息。若电子标签被移动到户外，保安人员可携带手持恢复追踪装置在户外对电子标签进行追踪，若电子标签被成功找回，可使用手持恢复追踪装置将电子标签恢复到待机状态，当手持恢复追踪装置发送与某个电子标签所携带信息所匹配的恢复信号时，只恢复这一个电子标签，当期发送通用的恢复信号时，可同时恢复多个电子标签。When the electronic tag is moved out of the safe area, it will be woken up by the wake-up device and is in the wake-up state. At this time, the monitoring device can receive the data of the awakened electronic tag. Once the monitoring device receives the correct tag data, it will start the alarm device (alarm), and at the same time transmit the received data of the electronic tag to the host computer. Information on stolen goods is retrieved from the database. If the electronic tag is moved outdoors, the security personnel can carry the handheld recovery tracking device to track the electronic tag outdoors. If the electronic tag is successfully retrieved, the electronic tag can be restored to the standby state by using the handheld recovery tracking device. When the handheld recovery tracking When the device sends a restoration signal that matches the information carried by a certain electronic tag, it only restores this electronic tag. When sending a general restoration signal at the same time, it can restore multiple electronic tags at the same time.
其中为满足实际需求，电子标签更换电池十分困难，所以在电子标签中增加了唤醒芯片，并且从新设计了电子标签的软件程序，使电子标签的功耗大大降低。Among them, in order to meet the actual needs, it is very difficult for the electronic tag to replace the battery, so a wake-up chip is added to the electronic tag, and the software program of the electronic tag is redesigned to greatly reduce the power consumption of the electronic tag.
通过使用低功耗单片机与射频收发芯片的配合，加上唤醒芯片，以普通的260mA·h纽扣电池计算，当电子标签失踪处于待机状态，其电池使用寿命可达10年以上。若电子标签始终处于唤醒状态，其监控追踪有效期可达半年。正常使用，电池寿命可达5-8年。By using a low-power single-chip microcomputer and a radio frequency transceiver chip, plus a wake-up chip, based on an ordinary 260mA·h button battery, when the electronic tag is missing and in standby mode, the battery life can reach more than 10 years. If the electronic tag is always in the wake-up state, its monitoring and tracking validity period can reach half a year. Under normal use, the battery life can reach 5-8 years.
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610386919.8ACN105809872A (en) | 2016-06-03 | 2016-06-03 | Low-power-consumption restorable anti-theft system and low-power-consumption restorable anti-theft method based on 2.4GHz wireless radio frequency chip |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610386919.8ACN105809872A (en) | 2016-06-03 | 2016-06-03 | Low-power-consumption restorable anti-theft system and low-power-consumption restorable anti-theft method based on 2.4GHz wireless radio frequency chip |
| Publication Number | Publication Date |
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| CN105809872Atrue CN105809872A (en) | 2016-07-27 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610386919.8APendingCN105809872A (en) | 2016-06-03 | 2016-06-03 | Low-power-consumption restorable anti-theft system and low-power-consumption restorable anti-theft method based on 2.4GHz wireless radio frequency chip |
| Country | Link |
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| CN (1) | CN105809872A (en) |
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20160727 | |
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