CN112034292A - Terminal data acquisition module - Google Patents

Terminal data acquisition module Download PDF

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Publication number
CN112034292A
CN112034292A CN202010973159.7A CN202010973159A CN112034292A CN 112034292 A CN112034292 A CN 112034292A CN 202010973159 A CN202010973159 A CN 202010973159A CN 112034292 A CN112034292 A CN 112034292A
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CN
China
Prior art keywords
circuit
terminal
acquisition module
data acquisition
voltage
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Pending
Application number
CN202010973159.7A
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Chinese (zh)
Inventor
符耐芳
周玉柱
陈兴旺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Center Intelligent Electric Technology Co ltd
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Henan Center Intelligent Electric Technology Co ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Henan Center Intelligent Electric Technology Co ltd filed Critical Henan Center Intelligent Electric Technology Co ltd
Priority to CN202010973159.7A priority Critical patent/CN112034292A/en
Publication of CN112034292A publication Critical patent/CN112034292A/en
Pending legal-status Critical Current

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    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers
    • 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
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • 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
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The application discloses a terminal data acquisition module, which relates to the technical field of instruments and meters and aims to solve the problems that the existing equipment has single function, only acquires and processes electrical data and cannot meet the aims of Internet of things and remote accurate monitoring of equipment state and parameters, and comprises a main control unit, a power supply circuit for power supply, a current acquisition circuit for acquiring a terminal equipment current signal, a voltage acquisition circuit for acquiring a terminal equipment voltage signal and a switching value detection circuit for detecting the state information of the terminal equipment, the intelligent terminal comprises a remote control circuit for executing instructions and a communication circuit for mutual information transmission between the equipment and the cloud platform, wherein a power supply circuit, a current acquisition circuit, a voltage acquisition circuit, a switching value detection circuit, the remote control circuit and the communication circuit are all connected to an I/O port of a main control unit, and the intellectualization of the terminal data acquisition module is realized.

Description

Terminal data acquisition module
Technical Field
The invention relates to the technical field of instruments and meters, in particular to a terminal data acquisition module.
Background
In recent years, the level of power grid intelligence is continuously improved, and meanwhile, the intelligence of electrical complete equipment gradually becomes an important trend of industrial development due to the development of computer technology, data processing technology, information sensor technology and communication and data storage technology.
At present, the terminal data acquisition equipment has single function, and part of the terminal data acquisition equipment only acquires and processes electrical data, so that the purposes of internet of things and remote accurate monitoring of equipment states and parameters cannot be met, equipment needs to be purchased additionally when other functions are needed, and the cost is increased; the stability of the equipment in actual use is poor, and in data transmission, remote control personnel cannot know the state of the equipment in real time due to the instability of signals of the equipment; therefore, manpower is consumed for maintenance and inspection, the safety of the terminal equipment is reduced, and the accident rate of a user site is improved.
Because terminal equipment such as terminal control box, distribution terminal are located the occasion environment complicacy, are unfavorable for maintenance, patrol, for reducing the cost of maintenance of manpower and equipment, improve the stability of this type of equipment and the comprehensive of function, guarantee on-the-spot terminal equipment's safe operation, need design one kind can realize the intelligent terminal data acquisition module of electrical terminal equipment.
Disclosure of Invention
The application discloses terminal data acquisition module, aim at realizes electrical terminal equipment's intellectuality.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a terminal data acquisition module comprises a main control unit, a power supply circuit for power supply, a current acquisition circuit for acquiring current signals of terminal equipment, a voltage acquisition circuit for acquiring voltage signals of the terminal equipment, a switching value detection circuit for detecting state information of the terminal equipment, a remote control circuit for controlling a controlled load and a communication circuit for mutually transmitting information between the equipment and a cloud platform; the power supply circuit, the current acquisition circuit, the voltage acquisition circuit, the switching value detection circuit, the remote control circuit and the communication circuit are all connected to an I/O port of the main control unit.
Preferably, the current acquisition circuit comprises a current transformer and a three-phase electric energy metering chip, and the output end of the current transformer is connected to the I/O port of the three-phase electric energy metering chip.
Preferably, the three-phase electric energy metering chip is further connected to the voltage acquisition module, the voltage acquisition circuit further comprises a voltage transformer, and an output end of the voltage transformer is connected to an I/O port of the three-phase electric energy metering chip.
Preferably, the communication circuit adopts an RS485 communication module, a Lora wireless communication module and a 4G communication module.
Preferably, the remote control circuit comprises a control relay and a switch tube, wherein the input end of the control relay is connected with the switch tube, and the output end of the control relay is connected with the controlled load.
Preferably, the switching tube is an NPN triode, a coil of the control relay is connected in parallel with a diode D1 for suppressing surge, one end of an input end of the control relay is connected with the 5V power supply, and the other end of the input end of the control relay is connected to a collector of the NPN triode.
Preferably, the switching value detection circuit comprises an optical coupler and two resistors, wherein the anode of the input end of the optical coupler is connected to the terminal to be detected through one resistor, the cathode of the input end of the optical coupler is connected to the power supply, the emitter of the output end of the optical coupler is grounded, and the collector of the output end of the optical coupler is connected to a pull-up resistor and is also connected to the I/O port of the main control unit.
The intelligent terminal data acquisition system realizes the intellectualization of terminal data acquisition by connecting the main control unit with the power supply circuit, the current acquisition circuit, the voltage acquisition circuit, the switching value detection circuit, the remote control circuit and the communication circuit; the device integrates the power parameters and the running state information of the equipment, and compared with a product with a single function, the device can know the running state and the running parameters of the equipment through the cloud platform, whether the equipment runs safely or not can be judged, and the manpower and the equipment cost can be reduced; the device adopts the communication circuit to carry out remote communication, is applicable to the thing networking, but remote network deployment, and the low power dissipation guarantees the real-time collection of information, and then can update equipment state and data in real time to the cloud platform through 4G communication module networking.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic view of a test structure in example 1;
FIG. 3 is a schematic wiring diagram of a remote control circuit according to embodiment 2;
fig. 4 is a schematic diagram of a switching value detection circuit in embodiment 2.
Detailed Description
A terminal data acquisition module as shown in fig. 1 includes a main control unit, a power circuit for power supply, a current acquisition circuit for acquiring a current signal of a terminal device, a voltage acquisition circuit for acquiring a voltage signal of the terminal device, a switching value detection circuit for detecting status information of the terminal device, a remote control circuit for executing an instruction, and a communication circuit for mutually transmitting information between the device and a cloud platform; the power supply circuit, the current acquisition circuit, the voltage acquisition circuit, the switching value detection circuit, the remote control circuit and the communication circuit are all connected to an I/O port of the main control unit.
Wherein, voltage acquisition circuit and current acquisition circuit can set up to including same three-phase electric energy metering chip, and voltage acquisition circuit can use voltage transformer to measure voltage, and current acquisition circuit can adopt current transformer to measure current, and voltage transformer and current transformer's output all are connected to on the IO port of the same three-phase electric energy metering chip that voltage acquisition circuit and current acquisition circuit adopted.
The switching value detection circuit acquires the state signal of the terminal equipment in real time through the access of the state detection point of the terminal equipment, and inputs the state signal into the main control unit in a high/low level mode. Communication circuit can adopt RS485 communication module, Lora wireless communication module and 4G communication module, RS485 communication module and Lora wireless communication module are local network deployment, cooperation 4G communication module, help equipment realizes remote communication, the data that will gather, the state of equipment, unusual warning upload to the cloud platform, display device's state information on the cloud platform, thereby reach the power supply state of monitoring all kinds of equipment, start, stop the state, fault state and operating condition.
Because the device is multi-purpose at terminal electrical equipment such as terminal control box and terminal distribution automation, because of terminal equipment primary current is not of uniform size, the event adopts built-in current transformer to gather current signal, gather voltage signal through voltage transformer, then all handle the back through three-phase electric energy measurement chip, give main control unit with electric data transfer through the SPI interface, main control unit sends control signal to remote control circuit according to received information, remote control circuit acts according to the instruction that obtains, and then control controlled load.
According to the actual demand in the field, wiring is carried out on the remote control, the remote control module is provided with two relays, and the remote control of the equipment is met by issuing an instruction through the cloud platform.
When the collected data or state is abnormal and the equipment is in failure, alarm information can be uploaded.
Example 1
The following describes the testing method of the device of the present application in conjunction with fig. 2.
As shown in fig. 2, the device to be tested is connected to the terminal data acquisition module through an interface, and various functional tests are implemented by using the device to be tested, the terminal data acquisition module and the cloud platform, and the test steps are as follows:
(1) connecting a power interface of the terminal data acquisition module to commercial power, stably supplying power to the device by a power supply through a power circuit, and connecting the testing device with the device; the current simulator and the voltage simulator of the testing device are respectively connected with the acquisition terminals of the corresponding current transformer and the corresponding voltage transformer in the device; the switching value analog state point is connected to the corresponding switching value detection terminal; the remote control output terminal is connected with the analog load corresponding to the remote control output terminal, for example, a 220V indicating lamp is used for displaying a 220V opening point.
(2) And (3) testing a communication function: and checking the state prompt of the cloud platform, and if the connection and the function are normal, indicating that the equipment is normally connected by the cloud platform.
(3) And (3) testing a current acquisition function: and setting the output current of the current simulator on the testing device to be 5A, and checking whether the cloud platform and the corresponding display area have correct current information.
(4) And (3) testing a voltage acquisition function: and setting the output voltage of the voltage simulator on the testing device to be 5V, and checking whether the cloud platform and the corresponding display area have correct voltage information.
(5) And (3) testing a switching value detection function: and changing one state of the switching value simulation state point, simulating a state switching signal, and checking whether the state point corresponding to the cloud platform and the corresponding display area is changed.
(6) Remote control function test: and issuing a control point output instruction from the cloud platform, and checking whether the load connected with the corresponding remote control output terminal acts or not.
Example 2
The control principle of the remote control circuit of the present application is described below with reference to fig. 3:
in the remote control circuit of this embodiment, the output end of the control relay is connected to both ends of the controlled load, the coil of the control relay is connected in parallel with a diode D1 for suppressing surge, one end of the input end of the control relay is connected to the 5V power supply, the other end of the input end of the control relay is connected to the collector of an NPN triode Q2 selected as a switching tube, and the control signal sent by the main control unit flows into the base of the NPN triode Q2 through a resistor R22. When the control signal is at high level, the NPN triode Q2 is conducted, the relay is electrified, the relay contact is attracted, and the controlled loads connected to the two ends of the relay output end are connected, so that the control effect is achieved.
The schematic diagram of the switching value detection circuit is shown in fig. 4:
the positive electrode of the input end of the optocoupler U is connected to a tested terminal through a resistor R31, the negative electrode of the input end is connected with a power supply-12V, the emitter of the output end is grounded, and the collector of the output end is connected with a pull-up resistor R32 and is also connected to an I/O port of the main control unit. When the detected terminal is monitored to be switched on, a high level is input to the optocoupler U through the resistor R31, the optocoupler U connected with the negative power supply is activated and conducted, the main control unit obtains low level input, when the optocoupler U is not conducted, the main control unit obtains high level input due to the action of the pull-up resistor R32, and switching value is judged through the change of the high level and the low level.

Claims (7)

1. The utility model provides a terminal data acquisition module which characterized in that: the system comprises a main control unit, a power supply circuit for power supply, a current acquisition circuit for acquiring a current signal of a terminal device and outputting the current signal to the main control unit, a voltage acquisition circuit for acquiring a voltage signal of the terminal device and outputting the voltage signal to the main control unit, a switching value detection circuit for detecting state information of the terminal device, a remote control circuit for controlling a controlled load and a communication circuit for mutual information transmission between the device and a cloud platform;
the power supply circuit, the current acquisition circuit, the voltage acquisition circuit, the switching value detection circuit, the remote control circuit and the communication circuit are all connected to an I/O port of the main control unit.
2. The terminal data acquisition module according to claim 1, characterized in that: the current acquisition circuit comprises a current transformer and a three-phase electric energy metering chip, and the output end of the current transformer is connected to the port of the I/O of the three-phase electric energy metering chip.
3. The terminal data acquisition module according to claim 2, characterized in that: the three-phase electric energy metering chip is further connected to the voltage acquisition module, the voltage acquisition circuit further comprises a voltage transformer, and the output end of the voltage transformer is connected to the I/O port of the three-phase electric energy metering chip.
4. The terminal data acquisition module according to claim 1, characterized in that: the communication circuit adopts an RS485 communication module, a Lora wireless communication module and a 4G communication module.
5. The terminal data acquisition module according to claim 1, characterized in that: the remote control circuit comprises a control relay and a switch tube, wherein the input end of the control relay is connected with the switch tube, and the output end of the control relay is connected to a controlled load.
6. The terminal data acquisition module according to claim 5, wherein: the switching tube adopts an NPN triode, a coil of the control relay is connected with a diode D1 for suppressing surge in parallel, one end of the input end of the control relay is connected with a 5V power supply, and the other end of the input end of the control relay is connected to a collector electrode of the NPN triode.
7. The terminal data acquisition module according to claim 1, characterized in that: the switching value detection circuit comprises an optocoupler and two resistors, wherein the anode of the input end of the optocoupler is connected to a terminal to be detected through one resistor, the cathode of the input end of the optocoupler is connected with a power supply, the emitter of the output end of the optocoupler is grounded, and the collector of the output end of the optocoupler is connected with a pull-up resistor and is simultaneously connected to an I/O port of the main control unit.
CN202010973159.7A 2020-09-16 2020-09-16 Terminal data acquisition module Pending CN112034292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010973159.7A CN112034292A (en) 2020-09-16 2020-09-16 Terminal data acquisition module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010973159.7A CN112034292A (en) 2020-09-16 2020-09-16 Terminal data acquisition module

Publications (1)

Publication Number Publication Date
CN112034292A true CN112034292A (en) 2020-12-04

Family

ID=73590030

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010973159.7A Pending CN112034292A (en) 2020-09-16 2020-09-16 Terminal data acquisition module

Country Status (1)

Country Link
CN (1) CN112034292A (en)

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