CN212845897U - Testing arrangement of multicore module electric energy meter - Google Patents

Abstract

The utility model discloses a testing arrangement of multicore module electric energy meter, including control chip and the first management core interface, the second management core interface of being connected with control chip respectively, go upward communication module interface, extension module interface, data acquisition module, resistance test module, power module, crystal oscillator module, memory, control bus and bluetooth communication module, control chip passes through the control bus and connects the industrial computer, and resistance test module is connected to the data acquisition module. The utility model discloses can realize conventional test, can check up the stability of power and test communication interface's stability and reliability under the full load state again, realized carrying out comprehensive and reliable test to a plurality of interfaces, power and the internal function module of multicore module electric energy meter, reduce the quality hidden danger to improve the stability and the reliability of the electric energy meter of dispatching from the factory.

Description

Testing arrangement of multicore module electric energy meter

Technical Field

The utility model relates to an instrument detects technical field, concretely relates to testing arrangement of multicore module electric energy meter

Background

With the overall planning of the ubiquitous power internet of things proposed by national grid companies, the intelligent electric energy meter is used as the most extensive metering basic equipment in the power industry, is the sensing equipment at the tail end in the internet of things, and is a foundation for realizing the ubiquitous power internet of things. A multi-core modularized design concept is introduced to the next generation of electric energy meters by a state network metering center, and the multi-core modularized intelligent electric energy meter is composed of a metering module, a management module, a communication module and an expansion module and realizes the electric energy meters with the functions of electric energy metering, data processing, real-time monitoring, automatic control, information interaction and the like. The metering core and the management core are relatively independent, an uplink communication module (HPLC module) and various service application modules are simultaneously equipped, a non-metering module can be independently upgraded, various service application modules are flexibly configured, sufficient space is reserved for future service requirements needing to be expanded on the premise of ensuring accurate and reliable metering functions, and the compatibility and expandability of the electric energy meter are improved. The multi-core modular electric energy meter has more complex functions, richer interfaces and higher power supply requirement. Based on the existing test verification means, test equipment and test tools, the production test requirements of the multi-core modular intelligent electric energy meter cannot be met.

SUMMERY OF THE UTILITY MODEL

The applicant provides a testing device of a multi-core modular electric energy meter with a reasonable structure, and the testing device can meet the production testing requirements of the multi-core modular electric energy meter.

The utility model discloses the technical scheme who adopts as follows:

a testing device of a multi-core modular electric energy meter comprises a control chip, a first management core interface, a second management core interface, an uplink communication module interface, an expansion module interface, a data acquisition module, a resistance testing module, a power module, a crystal oscillator module, a memory, a control bus and a Bluetooth communication module, wherein the first management core interface, the second management core interface, the uplink communication module interface, the expansion module interface, the data acquisition module, the resistance testing module, the power module, the crystal oscillator module, the memory, the control bus and the Bluetooth communication module are respectively connected with the control chip 5; the VCC ends of the first management core interface, the second management core interface, the uplink communication module interface and the extension module interface are all connected with a resistance testing module, the resistance testing module is controlled by a control chip, and the resistance testing module sends data to the control chip through a data acquisition module.

Preferably, the control chip is connected to the SPI end and the TEST end of the first management core interface, the TXD end, the RXD end, the SPI end, the POWDET end and the SECOND management core interface of the SECOND management core interface, the PLUG _ DET end, the TXD end, the RXD end, the SET end, the STA end, the RST end and the EVENOUT end of the uplink communication module interface, and the TXD end and the RXD end of the expansion module interface, respectively.

Preferably, the control chip is connected with the carrier controllable voltage module, and the carrier controllable voltage module supplies power to the uplink module.

Preferably, the control chip is further connected with the display screen, the keyboard, the power indicator and the communication indicator respectively.

Preferably, the control chip 5 adopts an STM32F407 chip.

The utility model has the advantages as follows:

the utility model can realize routine test by setting the first management core interface, the second management core interface, the uplink communication module interface and the extension module interface, and set the power supply voltage of each interface of the analog resistance test by the resistance test module to check the stability of the power supply under the full load state; the waveform of the communication between the SPI terminal and the URAT terminal is verified through the control chip, the stability and the reliability of the communication interface are tested, comprehensive and reliable testing of a plurality of interfaces, a power supply and internal functional modules of the multi-core modular electric energy meter is realized, the quality hidden danger is reduced, and the stability and the reliability of the electric energy meter which leaves the factory are improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a first management core interface; 2. a second management core interface; 3. an uplink communication module interface; 4. an expansion module interface; 5. a control chip; 6. a data acquisition module; 7. a resistance testing module; 8. a carrier controllable voltage module; 9. a power supply module; 10. a display screen; 11. a keyboard; 12. a power indicator light; 13. a communication indicator light; 14. a crystal oscillator module; 15. a memory; 16. a control bus; 17. an industrial personal computer; 18. and a Bluetooth communication module.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, testing arrangement of multicore module electric energy meter, which comprises a housin, be equipped with test circuit board on the casing, the last control chip 5 that is equipped with of test circuit board, the first management core interface 1 of being connected with control chip 5 respectively, second management core interface 2, go upward communication module interface 3, expansion module interface 4, data acquisition module 6, resistance test module 7, the controllable voltage module of carrier wave 8, power module 9, display screen 10, keyboard 11, power indicator 12, communication indicator 13, crystal oscillator module 14, memory 15, control bus 16, bluetooth communication module 18, control chip 5 passes through control bus 16 and connects outside industrial computer 17, data acquisition module 6 connecting resistance test module 7. The fixing of the management core module and the metering core module of the electric energy meter is realized through the first management core module interface 1 and the second management core module interface 2, the modules are convenient to pull and plug, and the fixing effect is good; the uplink communication module interface 3 is used for inserting a fixed HPLC module or an analog HPLC module, and the extension module interface 4 is used for simulating the access of an extension module.

The VCC ends of the first management core interface 1, the second management core interface 2, the uplink communication module interface 3 and the expansion module interface 4 are all connected with a resistance test module 7, the resistance test module 7 is controlled by a control chip 5, and a data acquisition module 6 converts voltage data of the resistance test module and then sends the voltage data to the control chip 5; the control chip 5 adopts an STM32F407 chip, the STM32F407 chip is provided with a plurality of UART serial ports, and has a flexible port configuration function, the control chip 5 is respectively connected with an SPI terminal and a TEST terminal of a first management core interface 1, a TXD terminal, an RXD terminal, an SPI terminal, a POWDET terminal and a SECOND terminal of a SECOND management core interface 2, a PLUG _ DET terminal, a TXD terminal, an RXD terminal, an SET terminal, an STA terminal, an RST terminal and an EVENOUT terminal of an uplink communication module interface 3, and a TXD terminal and an RXD terminal of an expansion module interface 4. The control chip 5 is connected with the industrial personal computer 17, online networking detection of multiple devices can be achieved, and field inspection and testing of the electric energy meter are facilitated. The power supply module 9 provides working voltage for the control chip 5; the memory 15 is connected with the control chip 5 and used for storing the communication addresses of the multiple communication ports.

The working principle of the utility model is as follows:

1. when the multi-core modular electric energy meter is powered on, the resistance testing module 7 accesses the analog load to VCC ends of the first management core interface 1, the second management core interface 2, the uplink communication module interface 3 and the extension module interface 4, and tests whether the voltage value of each VCC end meets the requirement and whether the voltage is stable; the voltage data is sent to the control chip 5 through the data acquisition module 6;

2. the control chip 5 sends a TEST instruction to SPI ends of the first management core interface 1 and the SECOND management core interface 2, so that the metering core module enters a TEST mode, the metering core module sequentially outputs an active signal, a forward harmonic signal, a reverse harmonic signal and a SECOND pulse signal through different TEST ends according to a reference 500ms square wave, outputs a power-down signal through a POWDET end, and outputs a SECOND synchronous signal through a SECOND end, and the control chip 5 captures the signals through a waveform and judges whether the signals accord with the 500ms square wave; the control chip 5 sends a standard frame to the SPI end according to the fixed speed 1M and the fixed speed 5M, receives the standard frame of the return code and judges whether the waveform meets the requirement of the fixed speed; the control chip 5 monitors a waveform output SPI interface of the metering core module, continuously collects 5 waveforms, and analyzes whether the waveforms meet 220V voltage waveforms and 5A current waveforms output at the rate of 2M;

3. the control chip 5 sends a standard frame to the RXD ends of the first management core interface 1 and the second management core interface 2 according to the fixed baud rates of 2400bps and 115200bps, receives a standard frame output by the TXD end, and judges whether the waveform meets the requirement of the fixed baud rate;

4. the control chip 5 simulates the insertion of an HPLC module and the in-place of the HPLC module, the electric energy meter records the insertion and in-place information in a test mode, the control chip 5 sends a standard frame to an RXD end of the uplink communication module interface 3 according to the fixed baud rates of 2400bps and 115200bps, receives a standard frame output by the TXD end and judges whether the waveform meets the requirement of the fixed baud rate; meanwhile, the control chip 5 simulates the received message to output a signal to the STA end, the electric energy meter records the signal and outputs a management core event state through the EVENTOUT end and outputs a 500ms square wave through the SET end, and the control chip 5 judges whether the signal conforms to the 500ms square wave through a waveform capturing function;

5. the control chip 5 sends a standard frame to the RXD end of the expansion module interface 4, receives a standard frame output by the TXD end and judges whether the waveform meets the requirement of a fixed baud rate;

6. the control chip 5 sends a switching-off signal to the bluetooth module of the electric energy meter through the bluetooth communication module 18, and the bluetooth module of the electric energy meter receives and analyzes the signal and forwards the signal to the control chip 5.

The above is only the preferred embodiment of the present invention, it should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, a plurality of improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention, for example, when the HPLC module is inserted into the communication module interface 3, the carrier wave controllable voltage module 8 can provide power for the HPLC module, the main control chip controls the supply voltage of the carrier wave controllable voltage module 8 by adjusting the output PWM, and the user can adjust the output scope by inputting instructions through the keyboard 11.

Claims (5)

1. A testing device of a multi-core modularized electric energy meter is characterized in that: the device comprises a control chip, and a first management core interface, a second management core interface, an uplink communication module interface, an expansion module interface, a data acquisition module, a resistance test module, a power supply module, a crystal oscillator module, a memory, a control bus and a Bluetooth communication module which are respectively connected with the control chip, wherein the control chip is connected with an industrial personal computer through the control bus, and the data acquisition module is connected with the resistance test module; the VCC ends of the first management core interface, the second management core interface, the uplink communication module interface and the extension module interface are all connected with a resistance testing module, the resistance testing module is controlled by a control chip, and the resistance testing module sends data to the control chip through a data acquisition module.

2. The testing device of the multi-core modular electric energy meter according to claim 1, wherein: the control chip is respectively connected with an SPI end and a TEST end of the first management core interface, a TXD end, an RXD end, an SPI end, a POWDET end and a SECOND end of the SECOND management core interface, a PLUG _ DET end, a TXD end, an RXD end, an SET end, an STA end, a RST end and an EVENOUT end of the uplink communication module interface, and a TXD end and an RXD end of the expansion module interface.

3. The testing device of the multi-core modular electric energy meter according to claim 1, wherein: the control chip is connected with the carrier controllable voltage module, and the carrier controllable voltage module supplies power to the uplink module.

4. The testing device of the multi-core modular electric energy meter according to claim 1, wherein: the control chip is also respectively connected with the display screen, the keyboard, the power indicator lamp and the communication indicator lamp.

5. The testing device of the multi-core modular electric energy meter according to claim 1, wherein: the control chip (5) adopts an STM32F407 chip.

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