Fast transient pulse train test system of Internet of Things electric energy meter

Abstract

The utility model discloses a fast transient pulse train test system of an Internet of Things electric energy meter, which comprises an EMC isolation power supply, a fast transient pulse train generator, a Bluetooth pulse converter and an upper computer, the input end of the Bluetooth pulse converter is connected with a pulse line of the EMC isolation power supply, the output end of the Bluetooth pulse converter is in communication connection with the upper computer, and the input end of the Bluetooth pulse converter is connected with the EMC isolation power supply. The first output end of the EMC isolation power supply is connected with the power supply end of the fast transient pulse train generator and provides voltage for the fast transient pulse train generator, and the second output end of the EMC isolation power supply is used for being connected with the first power supply end of the Internet of Things electric energy meter and providing current for the Internet of Things electric energy meter. The output end of the fast transient pulse train generator is used for being connected with the second power supply end of the Internet of Things electric energy meter and providing voltage for the Internet of Things electric energy meter. Under the condition that existing equipment in a laboratory is not replaced, the active error of the fast transient pulse train test of the Internet of Things electric energy meter can be acquired in a Bluetooth communication mode.

Description

Technical Field

[0001] The utility model relates to the technical field of Internet of Things electric energy meter measurement, in particular to a fast transient pulse group test system for an Internet of Things electric energy meter. Background Art

[0002] The fast transient pulse group test of the energy meter usually obtains the pulse error by directly connecting the pulse terminal of the energy meter with the pulse terminal on the test platform, but this method cannot test the IoT energy meter without weak current terminal. The adsorption type photoelectric head sampling does not require weak current terminal, but the adsorption type photoelectric head sampling on the market currently has high requirements for position accuracy. For IoT energy meters whose surface is not flat and smooth, it is easy for the photoelectric head to fail to adsorb or move during the experiment, resulting in inaccurate experimental data. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a fast transient pulse group test system for an Internet of Things electric energy meter, which can accurately collect the active error of the fast transient pulse group test of the Internet of Things electric energy meter.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A fast transient pulse group test system for an Internet of Things electric energy meter comprises an EMC isolated power supply, a fast transient pulse group generator, a Bluetooth pulse converter and a host computer, wherein the input end of the Bluetooth pulse converter is connected to the pulse line of the EMC isolated power supply, the output end of the Bluetooth pulse converter is communicatively connected to the host computer, the first output end of the EMC isolated power supply is connected to the power end of the fast transient pulse group generator to provide voltage for the fast transient pulse group generator, the second output end of the EMC isolated power supply is used to connect to the first power end of the Internet of Things electric energy meter to provide current for the Internet of Things electric energy meter, and the output end of the fast transient pulse group generator is used to connect to the second power end of the Internet of Things electric energy meter to provide voltage for the Internet of Things electric energy meter.

[0006] Optionally, a 5V power supply is also included, and the output end of the 5V power supply is connected to the power end of the Bluetooth pulse converter.

[0007] Optionally, the output end of the Bluetooth pulse converter is connected to a host computer via a 485 communication line.

[0008] Optionally, the 485 communication pin of the Bluetooth pulse converter is connected to the 485 communication line.

[0009] Optionally, the active pulse output pin of the Bluetooth pulse converter is connected to the pulse line of the EMC isolation power supply.

[0010] The beneficial effect of the utility model is that the error is read from the IoT electric energy meter by Bluetooth through the Bluetooth pulse converter, and then displayed on the EMC isolated power supply through the pulse line. Therefore, the active error of the IoT electric energy meter fast transient pulse group test can be accurately collected, and there is no need to replace the laboratory-related equipment of the existing electric energy meter fast transient pulse group test, which can effectively reduce the laboratory transformation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Shown is a schematic diagram of a fast transient pulse group test system for an Internet of Things electric energy meter according to an embodiment of the utility model.

[0012] Figure 2 Shown is a schematic diagram of an interface of a Bluetooth pulse converter according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0013] In order to more clearly understand the technical content, achieved purposes and effects of the utility model, the utility model is described in detail below in combination with specific implementation methods and in conjunction with the accompanying drawings. It should be noted that the implementation methods of the utility model and the features in the implementation methods can be combined with each other without conflict. In the following description, many specific details are set forth in order to fully understand the utility model. The implementation methods described are only part of the implementation methods of the utility model, not all of the implementation methods. Based on the implementation methods in the utility model, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0014] Please refer to Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a fast transient pulse group test system for an Internet of Things electric energy meter, including an EMC isolated power supply, a fast transient pulse group generator, a Bluetooth pulse converter, a 5V power supply and a host computer, wherein the input end of the Bluetooth pulse converter is connected to the pulse line of the EMC isolated power supply, the output end of the Bluetooth pulse converter is connected to the host computer via a 485 communication line, and the power end of the Bluetooth pulse converter is connected to the 5V power supply. The first output end of the EMC isolated power supply is connected to the power end of the fast transient pulse group generator to provide voltage for the fast transient pulse group generator, the second output end of the EMC isolated power supply is used to connect to the first power end of the Internet of Things electric energy meter to provide current for the Internet of Things electric energy meter, and the output end of the fast transient pulse group generator is used to connect to the second power end of the Internet of Things electric energy meter to provide voltage for the Internet of Things electric energy meter. Figure 1 As shown, the arrow indicates the transmission direction of the electrical signal.

[0015] Specifically, Figure 2The interface diagram of the Bluetooth pulse converter is shown, the VCC pin and the GND pin of the Bluetooth pulse converter are connected to a 5V power supply, the P+ pin (active pulse output pin) and the COM pin (common ground pin) of the Bluetooth pulse converter are connected to the pulse line of the EMC isolated power supply, the 485+ pin and the 485- pin of the Bluetooth pulse converter are connected to one end of the 485 communication line, and the other end of the 485 communication line is connected to the host computer, and the sampling mode of Bluetooth is set by the host computer. The Bluetooth pulse converter can be, for example, a converter with a model number of SC3104MLM produced by Beijing Dianke Zhixin Technology Co., Ltd.

[0016] It should be noted that the existing IoT energy meter consists of a metering core and a management core. The metering core is used to achieve legal measurement. The management core contains management MCU, LCD, Bluetooth and other components to achieve data management and data interaction. The EMC isolated power supply directly provides current to the IoT energy meter and provides voltage to the IoT energy meter through a fast transient pulse group generator. The Bluetooth pulse converter uses Bluetooth to read the error from the management core of the IoT energy meter, and then displays it on the EMC isolated power supply through a pulse line.

[0017] The fast transient pulse group test system of the Internet of Things electric energy meter of this embodiment can solve the problem of difficulty in obtaining active power error when the Internet of Things electric energy meter performs a fast transient pulse group test by using Bluetooth communication without replacing the previous test equipment in the laboratory.

[0018] During the test, the pulse signal of the IoT energy meter is sent to the Bluetooth pulse converter through the Bluetooth of the IoT energy meter management chip, and is displayed through the EMC isolation voltage source. The following is an example of the specific implementation steps:

[0019] 1. The EMC isolated power supply provides voltage to the IoT power meter through a fast transient pulse group generator and directly provides current to the IoT power meter.

[0020] 2. Turn on the EMC isolated power supply, connect the pulse line to the Bluetooth pulse converter, set the power supply parameters, and power the device.

[0021] 3. Turn on the fast transient pulse group generator and set the test parameters.

[0022] 4. Connect the Bluetooth pulse converter to the host computer through the 485 communication line, turn on the host computer, enter the communication address of the IoT electric energy meter, reset the Bluetooth pulse converter, click to connect the Bluetooth pulse converter and the Bluetooth in the management chip of the IoT electric energy meter, set the pulse calibration mode to read the pre-experimental error of the IoT electric energy meter.

[0023] 5. Click the fast transient pulse group generator to start the test. During the test, observe the error data of the IoT electricity meter and record it. After the experiment, compare the error with that before the experiment to obtain the test results.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fast transient pulse group test system for an Internet of Things electric energy meter, characterized in that: The invention comprises an EMC isolated power supply, a fast transient pulse group generator, a Bluetooth pulse converter and a host computer. The input end of the Bluetooth pulse converter is connected to the pulse line of the EMC isolated power supply, the output end of the Bluetooth pulse converter is connected to the host computer for communication, the first output end of the EMC isolated power supply is connected to the power end of the fast transient pulse group generator to provide voltage for the fast transient pulse group generator, the second output end of the EMC isolated power supply is used to connect to the first power end of the Internet of Things electric energy meter to provide current for the Internet of Things electric energy meter, and the output end of the fast transient pulse group generator is used to connect to the second power end of the Internet of Things electric energy meter to provide voltage for the Internet of Things electric energy meter.

2. The fast transient pulse group test system of the Internet of Things electric energy meter according to claim 1 is characterized in that: It also includes a 5V power supply, and the output end of the 5V power supply is connected to the power end of the Bluetooth pulse converter.

3. The fast transient pulse group test system of the Internet of Things electric energy meter according to claim 1 is characterized in that: The output end of the Bluetooth pulse converter is connected to the host computer through a 485 communication line.

4. The fast transient pulse group test system of the Internet of Things electric energy meter according to claim 3 is characterized in that: The 485 communication pin of the Bluetooth pulse converter is connected to the 485 communication line.

5. The fast transient pulse group test system of the Internet of Things electric energy meter according to claim 1 is characterized in that: The active pulse output pin of the Bluetooth pulse converter is connected to the pulse line of the EMC isolation power supply.

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