CN110855013A - An intelligent constant display power monitoring device and control method thereof - Google Patents
An intelligent constant display power monitoring device and control method thereofDownload PDFInfo
- Publication number
- CN110855013A CN110855013ACN201911396764.6ACN201911396764ACN110855013ACN 110855013 ACN110855013 ACN 110855013ACN 201911396764 ACN201911396764 ACN 201911396764ACN 110855013 ACN110855013 ACN 110855013A
- Authority
- CN
- China
- Prior art keywords
- power
- module
- power supply
- main control
- control mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及电力监测领域，尤其涉及一种智能恒显示电力监测装置及其控制方法。The invention relates to the field of power monitoring, in particular to an intelligent constant display power monitoring device and a control method thereof.
背景技术Background technique
随着电子工业的发展，大量电子元件在生产实践的过程中被广泛地应用，使得人们对于供电系统的供电质量和供电稳定性及可靠性提出了越来越高的要求，传统的电力监控是使用机械式计量仪表的方式，使用过程中可靠性不高，极易受到外部环境以及自身设计缺陷的影响，造成测量准确性不高，结果也准确，不能实时地对于供电系统进行监控。同时现有的电子式电量监测装置断电后无法查看设备的累积运行时长和功耗等，除非是机械式计量仪表，这样对设备维护和维修造成不便。With the development of the electronic industry, a large number of electronic components are widely used in the process of production practice, which makes people put forward higher and higher requirements for the power supply quality, power supply stability and reliability of the power supply system. The traditional power monitoring is The use of mechanical measuring instruments has low reliability during use, and is easily affected by the external environment and its own design defects, resulting in low measurement accuracy and accurate results, and cannot monitor the power supply system in real time. At the same time, the existing electronic power monitoring device cannot check the accumulated running time and power consumption of the equipment after the power is turned off, unless it is a mechanical measuring instrument, which causes inconvenience to the maintenance and repair of the equipment.
发明内容SUMMARY OF THE INVENTION
鉴于现有技术的上述缺陷，提供一种智能恒显示电力监测装置及其控制方法，以解决现有技术对设备维护和维修造成不便，收费计费困难的问题。In view of the above-mentioned defects of the prior art, an intelligent constant display power monitoring device and a control method thereof are provided to solve the problems that the prior art causes inconvenience to equipment maintenance and repair and difficulty in charging and billing.
实现本发明目的的技术方案是：The technical scheme that realizes the object of the present invention is:
一种智能恒显示电力监测装置，包括电力供电电源模块、系统备用电源、电源切换电路、三相电量采集模块、主控MCU模块、无线通讯模块、低功耗显示屏模块和FLASH存储模块；An intelligent constant display power monitoring device, comprising a power supply module, a system backup power supply, a power switching circuit, a three-phase power acquisition module, a main control MCU module, a wireless communication module, a low-power display screen module and a FLASH storage module;
所述主控MCU模块分别与三相电量采集模块、无线通讯模块、低功耗显示屏模块、FLASH存储模块电连接；The main control MCU module is respectively electrically connected with the three-phase power acquisition module, the wireless communication module, the low-power consumption display screen module, and the FLASH storage module;
所述电力供电电源模块和系统备用电源经过电源切换电路输出电源给所述电力监测装置供电；The power supply module and the system backup power supply supply power to the power monitoring device through the power switching circuit output power;
三相电量采集模块采集三相电力线电量信息：电压、电流、频率、实时功率、累积功率和累积运行时间；The three-phase power acquisition module collects three-phase power line power information: voltage, current, frequency, real-time power, cumulative power and cumulative running time;
FLASH存储模块分为存储代码的串行FLASH和存储电量信息的铁电存储器；The FLASH memory module is divided into serial FLASH for storing codes and ferroelectric memory for storing power information;
主控MCU模块通过SPI接口读取与之相连的三相电量采集模块采集到的电量信息，解析处理后，数据通过SPI接口发送给与之相连接的低功耗显示屏模块进行实时本地显示；主控MCU模块同时通过串口发送数据给无线通讯模块发送至远程终端设备，实现远程实时数据监控；The main control MCU module reads the power information collected by the three-phase power acquisition module connected to it through the SPI interface. After analysis and processing, the data is sent to the low-power display module connected to it through the SPI interface for real-time local display; The main control MCU module also sends data to the wireless communication module through the serial port to the remote terminal equipment to realize remote real-time data monitoring;
无线通讯模块用于发送数据给远程终端设备，实现远程实时监控的功能；The wireless communication module is used to send data to remote terminal equipment to realize the function of remote real-time monitoring;
低功耗显示屏模块用于本地显示主控MCU模块发送给它的电量信息，实现实时本地显示电量信息，所述电力监测装置断电后通过系统备用电源供电可以保持显示累积功率和累积运行时长的功能；The low-power display module is used to locally display the power information sent to it by the main control MCU module, so as to realize real-time local display of power information. function;
电力电源正常时，所述电力供电电源模块通过电源切换电路由电力电源给所述电力监测装置供电；所述电力监测装置处于断电状态时，通过电源切换电路由系统备用电源给所述电力监测装置供电，主控MCU模块输出信号使三相电量采集模块、无线通讯模块和低功耗显示屏模块进入节电模式，主控MCU模块也进入休眠模式。When the power supply is normal, the power supply module supplies power to the power monitoring device from the power supply through the power switching circuit; when the power monitoring device is in a power-off state, the power monitoring device is supplied by the system backup power supply through the power switching circuit. The device is powered, and the output signal of the main control MCU module makes the three-phase power acquisition module, the wireless communication module and the low-power display screen module enter the power saving mode, and the main control MCU module also enters the sleep mode.
进一步地，所述电源切换电路包括第一肖特基二极管和第二肖特基二极管，第一肖特基二极管和第二肖特基二极管的负极连接，第一肖特基二极管的正极与系统备用电源的正极连接；第二肖特基二极管的正极与功率电感串联后与电力供电电源模块的直流电输出端连接；第二肖特基二极管的正极与滤波电容连接；Further, the power switching circuit includes a first Schottky diode and a second Schottky diode, the cathodes of the first Schottky diode and the second Schottky diode are connected, and the anode of the first Schottky diode is connected to the system. The anode of the backup power supply is connected; the anode of the second Schottky diode is connected in series with the power inductor and then connected to the DC output end of the power supply module; the anode of the second Schottky diode is connected with the filter capacitor;
第一肖特基二极管和第二肖特基二极管的负极输出电源给所述电力监测装置供电；The negative output power supply of the first Schottky diode and the second Schottky diode supplies power to the power monitoring device;
电力电源正常时由第二肖特基二极管输出电源，系统备用电源处于截止状态，电力电源处于断电状态时，由系统备用电源通过第一肖特基二极管输出电源。When the power supply is normal, the second Schottky diode outputs power, and the system backup power supply is in an off state. When the power supply is in a power-off state, the system backup power supply outputs power through the first Schottky diode.
进一步地，所述主控MCU模块的芯片型号为STM32L151C8T6。Further, the chip model of the main control MCU module is STM32L151C8T6.
进一步地，低功耗显示屏模块为段码屏模块或OLED显示屏模块。Further, the low power consumption display screen module is a segment code screen module or an OLED display screen module.
本装置使用电池作为系统备用电源供电，实现断电显示功能。The device uses the battery as the system backup power supply to realize the power failure display function.
本装置可设为卡扣式，便于安装；设备运行时可在本地和远程同时监测；设备断电时本地显示设备使用累积时长和累积用电功耗，低功耗显示（小于5uA）；设备上电、断电上报远程终端，可远程监控。The device can be set as a snap-on type, which is easy to install; it can be monitored locally and remotely when the device is running; when the device is powered off, the cumulative usage time and cumulative power consumption of the device can be displayed locally, with low power consumption (less than 5uA); Power-on and power-off report to the remote terminal for remote monitoring.
上述智能恒显示电力监测装置的控制方法，包括如下步骤：The control method of the above-mentioned intelligent constant display power monitoring device includes the following steps:
S1，电量监测装置初始处于节电模式，由系统备用电源供电；S1, the power monitoring device is initially in the power-saving mode, powered by the system backup power supply;
S2，被监测设备上电运行，电力供电电源模块供电输出，电量监测装置主控MCU模块被唤醒，退出休眠模式；S2, the monitored equipment is powered on and running, the power supply module supplies power and output, the main control MCU module of the power monitoring device is awakened, and exits the sleep mode;
S3，主控MCU模块发送指令给低功耗显示屏模块、无线通讯模块和三相电量采集模块退出节电模式；S3, the main control MCU module sends an instruction to the low-power display module, the wireless communication module and the three-phase power acquisition module to exit the power-saving mode;
S4，主控MCU模块通过无线通讯模块发送“设备启动运行”信息至远程终端；S4, the main control MCU module sends "equipment startup and operation" information to the remote terminal through the wireless communication module;
S5，三相电量采集模块采集电量信息，并送给主控MCU模块进行计算处理；S5, the three-phase power acquisition module collects power information, and sends it to the main control MCU module for calculation processing;
S6，主控MCU模块把实时电量信息送本地实时显示和远程终端，定时存储数据；S6, the main control MCU module sends the real-time power information to the local real-time display and the remote terminal, and stores the data regularly;
S7，被监测设备断电停止运行，主控MCU模块通过无线通讯模块发送“设备停止运行”信息至远程终端；S7, the monitored equipment is powered off and stops running, and the main control MCU module sends the information of "equipment stopped running" to the remote terminal through the wireless communication module;
S8，主控MCU模块发送指令给低功耗显示屏模块、无线通讯模块和三相电量采集模块进入节电模式，主控MCU模块进入休眠模式，由系统备用电源供电。S8, the main control MCU module sends an instruction to the low power consumption display module, the wireless communication module and the three-phase power acquisition module to enter the power saving mode, the main control MCU module enters the sleep mode, and is powered by the system backup power supply.
本发明具有的有益效果：The beneficial effects that the present invention has:
（1）本装置本地可以显示正常运行的用电设备的电压、电流和累积电量等电量信息，实现本地监控；(1) The device can locally display power information such as voltage, current and accumulated power of the normally operating electrical equipment to realize local monitoring;
（2）本装置可以把正常运行的用电设备的电压、电流和累积电量等电量信息通过无线模块定时上传至远程终端，实现电量信息的远程在线实时监控；(2) The device can regularly upload power information such as voltage, current and accumulated power of the normally operating electrical equipment to the remote terminal through the wireless module to realize remote online real-time monitoring of power information;
（3）本装置具备故障（停电、电流突变）即时上报功能，远程监护人员可以及时发现故障进行相应处理；(3) The device has the function of real-time reporting of faults (power failure, sudden change of current), and the remote monitoring personnel can find the fault in time and deal with it accordingly;
（4）本装置具备断电时本地恒显示设备使用累积时长和累积用电功耗的功能。(4) This device has the function of accumulating the usage time and accumulative power consumption of the local constant display equipment when the power is turned off.
本发明提出的智能恒显示电力监测装置，通过无线网络传输技术，实现对电网数据进行自动采集，实时传输、统计及综合分析的在线监测系统，而且能够在断电的情况恒显示累积运行时长和累积功耗，非常适用于发电机和路灯及其它无人值守的场合，如通信基站、机房等，方便维护维修及收费计费。The intelligent constant display power monitoring device proposed by the present invention realizes an online monitoring system of automatic collection, real-time transmission, statistics and comprehensive analysis of power grid data through wireless network transmission technology, and can constantly display the accumulated running time and The accumulated power consumption is very suitable for generators, street lamps and other unattended occasions, such as communication base stations, computer rooms, etc., which is convenient for maintenance and charging.
附图说明Description of drawings
图1为实施例中智能恒显示电力监测装置的电路方框示意图；1 is a schematic block diagram of a circuit of an intelligent constant display power monitoring device in an embodiment;
图2-1—图2-3为实施例中智能恒显示电力监测装置的电路原理示意图；其中图2-1为电源处理模块电路示意图；图2-2为主控MCU模块与三相电量采集模块、段码屏模块、无线通讯模块电路连接示意图；图2-3为FLASH存储模块电路连接示意图；Figure 2-1 - Figure 2-3 is a schematic diagram of the circuit principle of the intelligent constant display power monitoring device in the embodiment; Figure 2-1 is a schematic circuit diagram of the power processing module; Figure 2-2 is the main control MCU module and three-phase power collection Schematic diagram of circuit connection of module, segment code screen module and wireless communication module; Figure 2-3 is a schematic diagram of circuit connection of FLASH memory module;
图3为实施例中智能恒显示电力监测装置的控制流程图。FIG. 3 is a control flow chart of the intelligent constant display power monitoring device in the embodiment.
具体实施方式Detailed ways
以下结合实施例和附图对本发明的内容进行描述，所举实施例只用于解释本发明，并非用于限定本发明的范围。The content of the present invention will be described below with reference to the embodiments and the accompanying drawings. The embodiments are only used to explain the present invention, but not to limit the scope of the present invention.
实施例：Example:
如图1所示，一种智能恒显示电力监测装置，包括电力供电电源模块、系统备用电源、电源切换电路、三相电量采集模块、主控MCU模块、无线通讯模块、低功耗显示屏模块和FLASH存储模块；As shown in Figure 1, an intelligent constant display power monitoring device includes a power supply power supply module, a system backup power supply, a power switching circuit, a three-phase power acquisition module, a main control MCU module, a wireless communication module, and a low-power display screen module. and FLASH storage module;
所述主控MCU模块分别与三相电量采集模块、无线通讯模块、低功耗显示屏模块、FLASH存储模块电连接；The main control MCU module is respectively electrically connected with the three-phase power acquisition module, the wireless communication module, the low-power consumption display screen module, and the FLASH storage module;
所述电力供电电源模块和系统备用电源经过电源切换电路输出电源给所述电力监测装置供电；The power supply module and the system backup power supply supply power to the power monitoring device through the power switching circuit output power;
三相电量采集模块采集三相电力线电量信息：电压、电流、频率、实时功率、累积功率和累积运行时间；The three-phase power acquisition module collects three-phase power line power information: voltage, current, frequency, real-time power, cumulative power and cumulative running time;
FLASH存储模块分为存储代码的串行FLASH和存储电量信息的铁电存储器；The FLASH memory module is divided into serial FLASH for storing codes and ferroelectric memory for storing power information;
主控MCU模块通过SPI接口读取与之相连的三相电量采集模块采集到的电量信息，解析处理后，数据通过SPI接口发送给与之相连接的低功耗显示屏模块进行实时本地显示；主控MCU模块同时通过串口发送数据给无线通讯模块发送至远程终端设备，实现远程实时数据监控；The main control MCU module reads the power information collected by the three-phase power acquisition module connected to it through the SPI interface. After analysis and processing, the data is sent to the low-power display module connected to it through the SPI interface for real-time local display; The main control MCU module also sends data to the wireless communication module through the serial port to the remote terminal equipment to realize remote real-time data monitoring;
无线通讯模块用于发送数据给远程终端设备，实现远程实时监控的功能；The wireless communication module is used to send data to remote terminal equipment to realize the function of remote real-time monitoring;
低功耗显示屏模块用于本地显示主控MCU模块发送给它的电量信息，实现实时本地显示电量信息，所述电力监测装置断电后通过系统备用电源供电可以保持显示累积功率和累积运行时长的功能；The low-power display module is used to locally display the power information sent to it by the main control MCU module, so as to realize real-time local display of power information. function;
电力电源正常时，所述电力供电电源模块通过电源切换电路由电力电源给所述电力监测装置供电；所述电力监测装置处于断电状态时，通过电源切换电路由系统备用电源给所述电力监测装置供电，主控MCU模块输出信号使三相电量采集模块、无线通讯模块和低功耗显示屏模块进入节电模式，主控MCU模块也进入休眠模式。When the power supply is normal, the power supply module supplies power to the power monitoring device from the power supply through the power switching circuit; when the power monitoring device is in a power-off state, the power monitoring device is supplied by the system backup power supply through the power switching circuit. The device is powered, and the output signal of the main control MCU module makes the three-phase power acquisition module, the wireless communication module and the low-power display screen module enter the power saving mode, and the main control MCU module also enters the sleep mode.
如图2-1、图2-2和图2-3所示，所述主控MCU模块的芯片型号为STM32L151C8T6，无线通讯模块型号为NB_IOT模块BC95模块，三相电量采集模块采用钜泉的带休眠管脚的芯片为HT7038的三相电量监测模块。As shown in Figure 2-1, Figure 2-2 and Figure 2-3, the chip model of the main control MCU module is STM32L151C8T6, the wireless communication module model is the NB_IOT module BC95 module, and the three-phase power acquisition module adopts Juquan's belt The chip of the sleep pin is the three-phase power monitoring module of the HT7038.
如图2-1所示，所述电源切换电路包括第一肖特基二极管和第二肖特基二极管，第一肖特基二极管和第二肖特基二极管的负极连接，第一肖特基二极管的正极与系统备用电源的正极连接；第二肖特基二极管的正极与功率电感LW1串联后与电力供电电源模块的直流电输出端连接；第二肖特基二极管的正极与滤波电容连接；As shown in Fig. 2-1, the power switching circuit includes a first Schottky diode and a second Schottky diode, the cathodes of the first Schottky diode and the second Schottky diode are connected, and the first Schottky diode The anode of the diode is connected to the anode of the system backup power supply; the anode of the second Schottky diode is connected in series with the power inductor LW1 and then connected to the DC output terminal of the power supply module; the anode of the second Schottky diode is connected to the filter capacitor;
第一肖特基二极管和第二肖特基二极管的负极输出电源给所述电力监测装置供电；The negative output power supply of the first Schottky diode and the second Schottky diode supplies power to the power monitoring device;
电力电源正常时由第二肖特基二极管输出电源，系统备用电源处于截止状态，电力电源处于断电状态时，由系统备用电源通过第一肖特基二极管输出电源。When the power supply is normal, the second Schottky diode outputs power, and the system backup power supply is in an off state. When the power supply is in a power-off state, the system backup power supply outputs power through the first Schottky diode.
进一步地，低功耗显示屏模块为段码屏模块或OLED显示屏模块。Further, the low power consumption display screen module is a segment code screen module or an OLED display screen module.
本装置使用电池作为系统备用电源供电，实现断电显示功能。The device uses the battery as the system backup power supply to realize the power failure display function.
具体地，如图2-1、图2-2和图2-3所示：Specifically, as shown in Figure 2-1, Figure 2-2 and Figure 2-3:
所述电力供电电源模块，输入的是待检测设备的A相电源AC220V，经过明纬电源模块IRM-03-05模块进行AC/DC转换后输出直流+5V电源，+5V电源进过TI的TPS62260进行DC/DC转换得到直流3.7V电源。The power supply module of the power supply input is the A-phase power AC220V of the equipment to be tested. After AC/DC conversion by the MEAN WELL power module IRM-03-05 module, it outputs DC +5V power supply, and the +5V power supply enters the TPS62260 of TI. Perform DC/DC conversion to obtain a DC 3.7V power supply.
所述系统备用电源采用锂亚电池ER18505与锂离子超级电容电池组合，电池电压3.6V，容量4000mAH，锂亚电池储存性能好：锂亚电池自放电率极低，仅为每年1%；电池产生VBAT(+3V)电源做系统备用电源。The backup power supply of the system adopts a combination of lithium sub-battery ER18505 and lithium-ion supercapacitor battery. The battery voltage is 3.6V and the capacity is 4000mAH. VBAT (+3V) power supply is used as system backup power supply.
所述的电源切换电路包括肖特基二极管D1，肖特基二极管D2，型号为SS34，电力供电电源处理模块和电池经过电源切换电路输出给整个系统供电，设备在正常运行时由于DC/DC输出的3.7V高于电池电压VBAT(+3.6V)，所以整个装置采用电力供电侧输出的电源供电，电池处于截止状态，也就是说设备在运行时，锂亚电池是不工作的，也不会耗电；当监测设备处于关断状态时，电源处理模块由电池VBAT(+3.6V)电源供电。The power switching circuit includes a Schottky diode D1, a Schottky diode D2, the model is SS34, the power supply processing module and the battery output power to the entire system through the power switching circuit, and the equipment is in normal operation due to DC/DC output. The 3.7V of the battery is higher than the battery voltage VBAT (+3.6V), so the whole device is powered by the power output from the power supply side, and the battery is in the off state, that is to say, when the device is running, the lithium sub-battery does not work and will not Power consumption; when the monitoring device is turned off, the power processing module is powered by the battery VBAT (+3.6V) power supply.
所述FLASH存储器模块有铁电储存器MB85RC16和SPI Flash （即SPI Nor Flash）W25Q80，MB85RC16的读写次数为100 亿次以上，在电源关掉后保留数据能力，用于存储电量信息和装置的累积运行时长，通过I2C接口与主控MCU模块连接，有低功耗关断脚；W25Q80为程序存储器，通过SPI接口与主控MCU模块连接。The FLASH memory module includes ferroelectric memory MB85RC16 and SPI Flash (ie SPI Nor Flash) W25Q80. The number of read and write times of MB85RC16 is more than 10 billion times. The accumulated running time is connected to the main control MCU module through the I2C interface, and has a low-power shutdown pin; W25Q80 is the program memory, which is connected to the main control MCU module through the SPI interface.
所述无线通讯模块采用通过SPI与主控MCU模块连接，负责把电量信息发送至远程，模块可以通过RF_EN信号关断模块，进行节电模式。The wireless communication module is connected with the main control MCU module through SPI, and is responsible for sending the power information to the remote. The module can turn off the module through the RF_EN signal to perform a power saving mode.
所述低功耗显示屏模块采用通过SPI与主控MCU模块连接，负责在本地显示电量信息，检测设备运行时背光点亮，模块通过LED_EN信号关断模块背光，进行节电模式。The low-power display screen module is connected to the main control MCU module through SPI, and is responsible for locally displaying power information, and the backlight lights up when the detection device is running.
所述三相电量采集模块对用电设备的电量信息进行采集，通过SPI接口把电量信息发送给主控MCU模块，A、B、C三相监测模块可以通过A_EN、B_EN、C_EN信号分别关断模块，进行节电模式。The three-phase power acquisition module collects the power information of the electrical equipment, and sends the power information to the main control MCU module through the SPI interface. The A, B, and C three-phase monitoring modules can be turned off respectively through the A_EN, B_EN, and C_EN signals. module, in power saving mode.
所述主控MCU模块是整个装置的控制器，当监测设备处于运行状态时负责把三相电量采集模块采集到的数据进行技术处理，然后把处理好的数据存储于FLASH存储模块，再把数据送到低功耗显示屏模块进行本地显示，同时把数据发送给无线通讯模块，输送到远程；当监测设备处于关断状态时，由于此时滤波电容CW11(1000μF)有储电能力，主控MCU模块马上发送设备关机信号给远程终端，然后输出A_EN、B_EN、C_EN信号、RF_EN信号和LED_EN信号为低电平使三相电量采集模块、无线通讯模块和低功耗显示屏模块进入节电模式，主控MCU模块也进入休眠模式，滤波电容CW11放电低于3V后，电路自动切换到电池供电；若设备恢复正常运行时输出+5V电源信号主控MCU模块PA1-WKUP脚，唤醒主控MCU模块，主控模块退出休眠模式，然后输出A_EN、B_EN、C_EN信号、RF_EN信号和LED_EN信号为高电平使三相电量采集模块、无线通讯模块和低功耗显示屏模块退出节电模式；The main control MCU module is the controller of the entire device. When the monitoring equipment is in operation, it is responsible for technical processing of the data collected by the three-phase power acquisition module, and then the processed data is stored in the FLASH storage module, and then the data is stored in the FLASH storage module. It is sent to the low-power display module for local display, and the data is sent to the wireless communication module for remote transmission; when the monitoring equipment is in the off state, because the filter capacitor CW11 (1000μF) has power storage capacity at this time, the main control The MCU module immediately sends the device shutdown signal to the remote terminal, and then outputs the A_EN, B_EN, C_EN, RF_EN and LED_EN signals as low levels to make the three-phase power acquisition module, wireless communication module and low-power display module enter the power-saving mode , the main control MCU module also enters the sleep mode. After the filter capacitor CW11 discharges below 3V, the circuit automatically switches to battery power supply; if the device returns to normal operation, the +5V power signal is output from the main control MCU module PA1-WKUP pin, wake up the main control MCU module, the main control module exits the sleep mode, and then outputs the A_EN, B_EN, C_EN signals, the RF_EN signal and the LED_EN signal as high levels to make the three-phase power acquisition module, the wireless communication module and the low-power display module exit the power-saving mode;
所述三相电量采集模块、无线通讯模块和低功耗显示屏模块进入节电模式，主控MCU模块进入休眠模式，整个装置的功耗小于20μA，而锂亚电池容量4000mA,在电池供电的情况下可以持续使用小时数为HOUR=4000×1000/20=200000(小时)，使用年限为YEAR=200000/24/365=22.83（年），除去电池自放电每年损耗的1%，使用年限也大于18年，这个年限已经远远超出一般电子元器件使用年限5年了，可以视为恒显示的装置。The three-phase power acquisition module, the wireless communication module and the low-power display module enter the power saving mode, the main control MCU module enters the sleep mode, the power consumption of the whole device is less than 20μA, and the capacity of the lithium sub-battery is 4000mA, and the battery is powered by the battery. In this case, the number of hours of continuous use is HOUR=4000×1000/20=200000 (hours), and the service life is YEAR=200000/24/365=22.83 (years), except for the 1% annual loss of battery self-discharge, the service life is also More than 18 years, this period has far exceeded the service life of general electronic components for 5 years, which can be regarded as a constant display device.
所述远程终端包括手机、电脑或其他终端设备。The remote terminal includes a mobile phone, a computer or other terminal equipment.
如图3所示，上述智能恒显示电力监测装置的控制方法，包括如下步骤：As shown in FIG. 3, the control method of the above-mentioned intelligent constant display power monitoring device includes the following steps:
S1，电量监测装置初始处于节电模式，由系统备用电源供电；S1, the power monitoring device is initially in the power-saving mode, powered by the system backup power supply;
主控MCU模块初始时是处于休眠模式，三相电量采集模块、无线通讯模块和低功耗显示屏模块也处于节电模式，段码显示屏处于静态显示状态，整个装置处于节电模式，功耗小于10μA；The main control MCU module is initially in the sleep mode, the three-phase power acquisition module, the wireless communication module and the low-power display module are also in the power-saving mode, the segment code display is in a static display state, and the entire device is in the power-saving mode. Consumption is less than 10μA;
S2，被监测设备上电运行，电力供电电源模块供电输出，电量监测装置主控MCU模块被唤醒，退出休眠模式；S2, the monitored equipment is powered on and running, the power supply module supplies power and output, the main control MCU module of the power monitoring device is awakened, and exits the sleep mode;
被监测设备一上电，所述智能恒显示电力监测装置所接的A相AC220V输入经过AC/DC模块IRM-03-05产生+5V，主控MCU模块的PA0-WKUP脚电平变高则主控MCU模块被唤醒，同时+5V经DC/DC芯片TPS62260处理产生3.7V电源给整个系统供电，系统备用电源电池（3.6V）处于截止状态（无功耗）；As soon as the monitored equipment is powered on, the A-phase AC220V input connected to the intelligent constant display power monitoring device generates +5V through the AC/DC module IRM-03-05, and the PA0-WKUP pin level of the main control MCU module becomes high. The main control MCU module is awakened, and at the same time +5V is processed by the DC/DC chip TPS62260 to generate 3.7V power supply to supply power to the entire system, and the system backup power battery (3.6V) is in the off state (no power consumption);
S3，主控MCU模块发送指令给低功耗显示屏模块、无线通讯模块和三相电量采集模块退出节电模式；S3, the main control MCU module sends an instruction to the low-power display module, the wireless communication module and the three-phase power acquisition module to exit the power-saving mode;
主控MCU模块被唤醒后，即刻控制A_EN、B_EN、C_EN信号、RF_EN信号和LED_EN信号变为高电平使三相电量采集模块、无线通讯模块和低功耗显示屏模块退出节电模式，处于工作状态；After the main control MCU module is woken up, it immediately controls the A_EN, B_EN, C_EN signals, the RF_EN signal and the LED_EN signal to become high level to make the three-phase power acquisition module, wireless communication module and low-power display module exit the power-saving mode and are in working status;
S4，主控MCU模块通过无线通讯模块发送“设备启动运行”信息至远程终端；S4, the main control MCU module sends "equipment startup and operation" information to the remote terminal through the wireless communication module;
主控MCU模块在所以模块都退出节电模式后，马上通过无线通讯模块发送“设备启动运行”信息至远程，告知远程监控端设备开始运行了，实现设备上电及时上报功能；After all the modules exit the power saving mode, the main control MCU module immediately sends the "equipment start-up operation" information to the remote through the wireless communication module, informing the remote monitoring terminal that the equipment has started to run, and realizes the timely reporting function when the equipment is powered on;
S5，三相电量采集模块采集电量信息，并送给主控MCU模块进行计算处理；S5, the three-phase power acquisition module collects power information, and sends it to the main control MCU module for calculation processing;
三相电量采集模块采集电量信息，是分三个A相、B相、C相三个电量监测模块完成的，采集到的数据也是分三相输送给主控CPU模块处理的，主控CPU模块把采集到的数据计算处理好；The three-phase power acquisition module collects power information, which is completed by three power monitoring modules: A-phase, B-phase, and C-phase. The collected data is also sent to the main control CPU module in three phases for processing. The main control CPU module Calculate and process the collected data;
S6，主控MCU模块把实时电量信息送本地实时显示和远程终端，定时存储数据；S6, the main control MCU module sends the real-time power information to the local real-time display and the remote terminal, and stores the data regularly;
主控MCU模块把计算处理好的电量信息数据在本地的低功耗显示屏模块上实时显示；同时主控MCU模块把计算处理好的电量信息数据经过无线通讯模块输送到远程，远程终端可以实时监控设备的电量信息；电量信息和设备的运行时长定时储存于铁电存储器MB85RC16；The main control MCU module displays the calculated and processed power information data on the local low-power display module in real time; at the same time, the main control MCU module transmits the calculated and processed power information data to the remote through the wireless communication module, and the remote terminal can real-time Monitor the power information of the equipment; the power information and the running time of the equipment are regularly stored in the ferroelectric memory MB85RC16;
S7，被监测设备断电停止运行，主控MCU模块通过无线通讯模块发送“设备停止运行”信息至远程终端；S7, the monitored equipment is powered off and stops running, and the main control MCU module sends the information of "equipment stopped running" to the remote terminal through the wireless communication module;
被监测设备断电停止运行，三相电量采集模块采集到电量信息中电压、电流都小于20VAC（设定一个下限值，不能设置为0VAC，因为电网有波动）时，主控MCU模块通过无线通讯模块发送“设备停止运行”信息至远程终端，实现设备断电及时上报功能；When the monitored equipment is powered off and stops running, and the voltage and current in the power information collected by the three-phase power acquisition module are both less than 20VAC (set a lower limit value, it cannot be set to 0VAC, because the power grid fluctuates), the main control MCU module wirelessly The communication module sends the information of "equipment stopped running" to the remote terminal to realize the function of timely reporting of equipment power failure;
S8，主控MCU模块发送指令给低功耗显示屏模块、无线通讯模块和三相电量采集模块进入节电模式，主控MCU模块进入休眠模式，由系统备用电源供电；S8, the main control MCU module sends an instruction to the low-power display module, the wireless communication module and the three-phase power acquisition module to enter the power saving mode, the main control MCU module enters the sleep mode, and is powered by the system backup power supply;
主控MCU模块即刻控制A_EN、B_EN、C_EN信号、RF_EN信号和LED_EN信号变为低电平使三相电量采集模块、无线通讯模块和低功耗显示屏模块进入节电模式，处于节电状态，主控MCU模块进入休眠模式；由于滤波电容CW11有储电能力，备监测设备供电关断供电到设备进入节电状态这段时间，都由滤波电容CW11供电，当滤波电容CW11处的电压低于3V后，电路自动切换到电池供电，智能恒显示电力监测装置此时显示的内容为设备累积运行时长和累积功耗，实现恒显示功能。The main control MCU module immediately controls the A_EN, B_EN, C_EN signals, the RF_EN signal and the LED_EN signal to become low level, so that the three-phase power acquisition module, the wireless communication module and the low-power display module enter the power-saving mode and are in a power-saving state. The main control MCU module enters the sleep mode; since the filter capacitor CW11 has the power storage capacity, the power supply of the backup monitoring device is powered off from the power supply to the device entering the power-saving state, and the filter capacitor CW11 is powered. When the voltage at the filter capacitor CW11 is lower than After 3V, the circuit automatically switches to battery power supply, and the content displayed by the intelligent constant display power monitoring device at this time is the accumulated running time and accumulated power consumption of the equipment, realizing the constant display function.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396764.6ACN110855013A (en) | 2019-12-30 | 2019-12-30 | An intelligent constant display power monitoring device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396764.6ACN110855013A (en) | 2019-12-30 | 2019-12-30 | An intelligent constant display power monitoring device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110855013Atrue CN110855013A (en) | 2020-02-28 |
Family
ID=69610665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911396764.6APendingCN110855013A (en) | 2019-12-30 | 2019-12-30 | An intelligent constant display power monitoring device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110855013A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917171A (en)* | 2020-07-15 | 2020-11-10 | 宁波荣特电子有限公司 | High altitude lamp emergency power supply system |
| TWI723943B (en)* | 2020-09-11 | 2021-04-01 | 朝陽科技大學 | Wireless sensing system with power supply |
| CN113625370A (en)* | 2021-08-13 | 2021-11-09 | 国网新疆电力有限公司电力科学研究院 | Multi-sensing fusion early warning-based multifunctional meteorological monitoring device for transformer substation site |
| CN113904435A (en)* | 2021-09-30 | 2022-01-07 | 山西昌昇汇能科技有限公司 | Power-off memory zero-power-consumption three-phase electric energy push-pull type measured data protection device |
| WO2022027462A1 (en)* | 2020-08-06 | 2022-02-10 | 深圳市中联创新自控系统有限公司 | Power supply device having multiple power supply modes, smart data acquisition device and power supply method |
| US11343892B2 (en) | 2020-08-19 | 2022-05-24 | Delta Electronics Inc. | Light source system, driver and operating method thereof |
| CN115202250A (en)* | 2022-06-27 | 2022-10-18 | 福州银达云创信息科技有限公司 | Water flow power generation and water control intelligent terminal based on Internet of things |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201434880Y (en)* | 2009-05-18 | 2010-03-31 | 深圳市森晖电子有限公司 | Carrier wave remote controlled meter-reading billing system |
| CN201811983U (en)* | 2010-07-27 | 2011-04-27 | 安徽中兴继远信息技术有限公司 | Collection terminal device of special transformer |
| CN102830255A (en)* | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| CN204694771U (en)* | 2015-06-25 | 2015-10-07 | 河南理工大学 | An electric energy metering device for smart home appliances |
| CN208568904U (en)* | 2018-07-31 | 2019-03-01 | 深圳市科陆电子科技股份有限公司 | A kind of voltage monitoring terminal and system |
| CN210957918U (en)* | 2019-12-30 | 2020-07-07 | 桂林海威科技股份有限公司 | An intelligent constant display power monitoring device |
- 2019
- 2019-12-30CNCN201911396764.6Apatent/CN110855013A/enactivePending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201434880Y (en)* | 2009-05-18 | 2010-03-31 | 深圳市森晖电子有限公司 | Carrier wave remote controlled meter-reading billing system |
| CN201811983U (en)* | 2010-07-27 | 2011-04-27 | 安徽中兴继远信息技术有限公司 | Collection terminal device of special transformer |
| CN102830255A (en)* | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| CN204694771U (en)* | 2015-06-25 | 2015-10-07 | 河南理工大学 | An electric energy metering device for smart home appliances |
| CN208568904U (en)* | 2018-07-31 | 2019-03-01 | 深圳市科陆电子科技股份有限公司 | A kind of voltage monitoring terminal and system |
| CN210957918U (en)* | 2019-12-30 | 2020-07-07 | 桂林海威科技股份有限公司 | An intelligent constant display power monitoring device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917171A (en)* | 2020-07-15 | 2020-11-10 | 宁波荣特电子有限公司 | High altitude lamp emergency power supply system |
| WO2022027462A1 (en)* | 2020-08-06 | 2022-02-10 | 深圳市中联创新自控系统有限公司 | Power supply device having multiple power supply modes, smart data acquisition device and power supply method |
| US11343892B2 (en) | 2020-08-19 | 2022-05-24 | Delta Electronics Inc. | Light source system, driver and operating method thereof |
| TWI723943B (en)* | 2020-09-11 | 2021-04-01 | 朝陽科技大學 | Wireless sensing system with power supply |
| US11275418B1 (en) | 2020-09-11 | 2022-03-15 | Chaoyang University Of Technology | Wireless sensing system with backup power |
| CN113625370A (en)* | 2021-08-13 | 2021-11-09 | 国网新疆电力有限公司电力科学研究院 | Multi-sensing fusion early warning-based multifunctional meteorological monitoring device for transformer substation site |
| CN113625370B (en)* | 2021-08-13 | 2024-05-14 | 国网新疆电力有限公司电力科学研究院 | Multi-sensor fusion early warning-based multifunctional meteorological monitoring device for transformer substation site |
| CN113904435A (en)* | 2021-09-30 | 2022-01-07 | 山西昌昇汇能科技有限公司 | Power-off memory zero-power-consumption three-phase electric energy push-pull type measured data protection device |
| CN115202250A (en)* | 2022-06-27 | 2022-10-18 | 福州银达云创信息科技有限公司 | Water flow power generation and water control intelligent terminal based on Internet of things |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110855013A (en) | An intelligent constant display power monitoring device and control method thereof | |
| CN210957918U (en) | An intelligent constant display power monitoring device | |
| CN103487089B (en) | A kind of underground water table water temperature remote data transmission device and method | |
| CN206740889U (en) | Electrical equipment supportability tester | |
| CN105305637B (en) | A kind of grid-connected warning system of distributed generation resource and its operation method | |
| CN211627772U (en) | A small aluminum-air battery monitoring system | |
| CN205670717U (en) | Long-life intelligent electric energy meter | |
| CN112098713A (en) | Electric energy meter operation control method | |
| CN110797973A (en) | Microcomputer controlled modularized direct current power supply panel | |
| CN201975855U (en) | Ammeter and power supply management circuit thereof | |
| CN201674277U (en) | Power management power supply module for electronic energy meters | |
| CN206990675U (en) | A kind of data center intelligent electric meter monitoring system | |
| CN222381385U (en) | Standby power supply switching-on scheme for intelligent measurement terminal | |
| CN202218455U (en) | A single lamp control device for urban lighting | |
| CN218213189U (en) | A Electric Energy Meter Circuit Convenient for Measuring Battery Life | |
| CN206573608U (en) | A kind of test device for relay protection with continuation of the journey function | |
| CN113584492B (en) | Sacrificial anode intelligent state monitor based on wireless communication and monitoring method thereof | |
| CN201611385U (en) | Automatic detecting device of communication battery | |
| CN212256084U (en) | One-time power-off integrated manager | |
| CN221880421U (en) | Faucet device with functions of electromagnetic treatment and water quality detection | |
| CN205643566U (en) | A portable energy-consuming equipment fault warning device based on electricity collection | |
| CN222544764U (en) | Multi-parameter flow transmitter | |
| CN219535697U (en) | Power-down protection circuit and ATE equipment | |
| CN116990461B (en) | Automatic time service gas detection analyzer | |
| CN218243111U (en) | Fault indicator collecting unit for controlling GPRS working mode and improving online rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20200228 | |
| RJ01 | Rejection of invention patent application after publication |