CN212275954U - Electric energy meter testing device - Google Patents
Electric energy meter testing device Download PDFInfo
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- CN212275954U CN212275954U CN202020806785.2U CN202020806785U CN212275954U CN 212275954 U CN212275954 U CN 212275954U CN 202020806785 U CN202020806785 U CN 202020806785U CN 212275954 U CN212275954 U CN 212275954U
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Abstract
The utility model provides an electric energy meter testing device, which comprises a power supply module, a main control module, a multi-channel level conversion module, an expansion port module, a port module of a device to be tested, a port module of a detection instrument, a plurality of LED lamp control circuits and an LED lamp port module; the power supply module supplies power to the main control module, the multi-channel level conversion module, the expansion port module, the equipment port module to be tested, the detection instrument port module and the LED lamp control circuit. Because the multi-channel level conversion module is arranged in the electric energy meter testing device, the multi-channel level conversion module can interact with the main control module, and the external control equipment connected to the expansion port module can also interact with the electric energy meter to be tested connected to the port module of the equipment to be tested through the multi-channel level module, so that external control detection is completed.
Description
Technical Field
The utility model relates to a power equipment test technical field, concretely relates to electric energy meter testing arrangement.
Background
The electronic electric energy meters produced in the global range are of various types, generally, the electric energy meters produced by one electric energy meter factory are 3 to 5 types, and various electric energy meters are generally provided with different voltage levels, so that the electric energy meters of different manufacturers and different voltage levels are up to ten types, and when the electric energy meters leave a factory, an electric energy meter testing device is required to be used for carrying out performance detection and parameter training on the electric energy meters, and the performance and the applicability of the electric energy meters are ensured.
The conventional electric energy meter detection device has the problems that the electric energy meter detection device only utilizes a controller in the electric energy meter detection device to carry out interaction and control processing on the electric energy meter, and when the built-in controller of the electric energy meter detection device fails to meet the detection requirement or the built-in controller is abnormal, the electric energy meter detection work cannot be finished.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric energy meter detection device that has the extending capability and realize external control and detect.
The utility model provides an electric energy meter testing device, which comprises a power supply module, a main control module, a multi-channel level conversion module, an expansion port module, a port module of a device to be tested, a port module of a detection instrument, a plurality of LED lamp control circuits and an LED lamp port module; the power supply module supplies power to the main control module, the multi-channel level conversion module, the expansion port module, the port module of the equipment to be tested, the port module of the detection instrument and the LED lamp control circuit; the detection instrument port module is electrically connected with the main control module, and the LED lamp control circuits are electrically connected between the main control module and the LED lamp port module; the main control module is provided with a first sending port and a first receiving port, the expansion port module is provided with a second sending port and a second receiving port, and the port module of the equipment to be tested is provided with a third sending port, a third receiving port, a fourth sending port and a fourth receiving port; the multi-channel level conversion module is provided with a first transmission channel, a second transmission channel, a third transmission channel and a fourth transmission channel; the first transmission channel is electrically connected between the first sending port and the third receiving port, the second transmission channel is electrically connected between the first receiving port and the third sending port, the third transmission channel is electrically connected between the second sending port and the fourth receiving port, and the fourth transmission channel is electrically connected between the second receiving port and the fourth sending port; the power supply module is provided with a first power supply output end and a second power supply output end, and the output voltage value of the first power supply output end is greater than that of the second power supply output end; the first power supply output end is electrically connected with the first sending port, the first receiving port, the second sending port and the second receiving port respectively; the second power output end is electrically connected with the third transmitting port, the third receiving port, the fourth transmitting port and the fourth receiving port respectively.
According to the scheme, the multi-channel level conversion module is arranged in the electric energy meter testing device, the module can interact with the main control module, the external control equipment connected with the expansion port module can interact with the electric energy meter to be tested connected to the port module of the equipment to be tested through the multi-channel level module, so that external control detection is completed, when the built-in controller of the electric energy meter testing device fails to meet detection requirements or the built-in controller is abnormal, the external control equipment can be accessed, and then detection of the electric energy meter to be tested is completed.
The further scheme is that the multi-channel level conversion module comprises a bidirectional level conversion chip; the first power supply output end and the second power supply output end are electrically connected with the bidirectional level conversion chip; the first sending port, the first receiving port, the second sending port, the second receiving port, the third sending port, the third receiving port, the fourth sending port and the fourth receiving port are all electrically connected with the bidirectional level conversion chip.
Therefore, the bidirectional level conversion chip can provide enough transmission channels, and meanwhile, the built-in level conversion circuit enables the level of each port to be adapted to the correspondingly connected chip or device, so that the transmission stability is improved, and the product quality is improved.
The power module is provided with a third power output end, and the output voltage value of the third power output end is greater than that of the first power output end; the expansion port module comprises a 232 serial port communication chip and a first connector, and the first connector is electrically connected with the 232 serial port communication chip; the third power output end is electrically connected with the 232 serial port communication chip, and the second sending port and the second receiving port are positioned on the 232 serial port communication chip.
Therefore, the 232 serial port communication chip provides EIA/TIA-232-E level for the first connector, so that the first connector is suitable for being connected with other computers or terminal equipment and transmitting data.
The power supply module is provided with a fourth power supply output end; the LED lamp control circuit comprises a PNP triode, the main control module is electrically connected with the base electrode of the PNP triode, the fourth power output end is electrically connected with the emitting electrode of the PNP triode, and the collecting electrode of the PNP triode is electrically connected with the LED lamp end opening module.
Therefore, the power supply control of the main control module to the power supply of the LED lamp can be realized, and the optical signal feedback of the detection state is realized.
The port module of the detection instrument comprises a 485 serial port communication chip and a second connector, wherein the 485 serial port communication chip is electrically connected with the second connector; the first power output end is electrically connected with the 485 serial port communication chip.
As can be seen, this arrangement makes the instrumentation port module suitable for interfacing and signaling with probe devices or other instrumentation.
The further scheme is that the number of the LED lamp control circuits is more than ten.
From the above, this setting makes the quantity of LED lamp enough provide electric energy meter testing arrangement to carry out the feedback to various detection condition.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the electric energy meter detection device of the present invention.
Fig. 2 is a schematic circuit diagram of an embodiment of the expansion port module of the electric energy meter detection device of the present invention.
Fig. 3 is a schematic circuit diagram of the multi-channel level shift module in the embodiment of the electric energy meter detection apparatus of the present invention.
Fig. 4 is the circuit schematic diagram of the port module of the device to be tested in the embodiment of the electric energy meter detection apparatus of the present invention.
Fig. 5 is a schematic circuit diagram of the port module of the detecting instrument in the embodiment of the electric energy meter detecting device of the present invention.
Fig. 6 is the circuit schematic diagram of the LED lamp control circuit and the LED lamp port module in the embodiment of the electric energy meter detection device of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic circuit block diagram of an embodiment of the detection device of the electric energy meter of the present invention. The electric energy meter testing device comprises a power supply module 1, a main control module 2, a multi-channel level conversion module 3, an expansion port module 4, a device to be tested port module 5, a detection instrument port module 7, 11 LED lamp control circuits 61 and an LED lamp port module 62. The power supply module 1 comprises a voltage regulating circuit, the power supply module 1 is provided with a first power supply output end, a second power supply output end, a third power supply output end and a fourth power supply output end, the first power supply output end provides an output power supply with an output voltage value of 3.3V, the second power supply output end provides an output power supply with an output voltage value of 1.8V, the third power supply output end provides an output power supply with an output voltage value of 5V, and the fourth power supply output end provides an output power supply with an output voltage value meeting the requirements of the LED lamp.
The detection instrument port module 7 is electrically connected with the main control module 2, and the LED lamp control circuits 61 are electrically connected between the main control module 2 and the LED lamp port module 62; the main control module 2 and the expansion port module 4 are both electrically connected with the multi-channel level conversion module 3, and the multi-channel level conversion module 3 is electrically connected with the port module 5 of the device to be tested. The device to be tested port module 5 is used for being electrically connected with the device to be tested 91, and the device to be tested 91 is an electric energy meter; the expansion port module 4 is used for electrically connecting an external control device 92, and the external control device 92 is a computer; the detecting instrument port module 7 is used for electrically connecting with a detecting instrument 93, and the detecting instrument 93 is a probe.
Referring to fig. 1 and fig. 2, fig. 2 is a schematic circuit diagram of an expansion port module in an embodiment of an electric energy meter detection device according to the present invention. The expansion port module 4 is composed of a 232 serial port communication chip U2 with a MAX232 model and a first connector J1, the first connector J1 is electrically connected with the 232 serial port communication chip U2, and a third power output end of the main control module 2 is respectively connected to the power input end 41 of the 232 serial port communication chip U2 and the first connector J1, so that 5V power is provided for the 32 serial port communication chip U2 and the first connector J1. The second transmitting port 401 and the second receiving port 402 of the 232 serial port communication chip U2 are both electrically connected to the multi-channel level shift module 3.
Referring to fig. 1 to 4, fig. 3 is the circuit schematic diagram of the multi-channel level conversion module in the embodiment of the electric energy meter detection device of the present invention, and fig. 4 is the circuit schematic diagram of the port module of the device to be detected in the embodiment of the electric energy meter detection device of the present invention. The multi-channel level conversion module 3 is formed on the basis of a TXS0108E model bidirectional level conversion chip U2. The bidirectional level conversion chip U2 is connected to the port module 5 of the device to be tested, the main control module 2 and the expansion port module 4, so that the electric energy meter can be selectively detected by the electric energy meter detection device itself or the external control device 92.
The port module 5 of the device to be tested is formed based on the double pin row connector J2, and the first power output end and the third power output end are respectively connected to different output ends of the double pin row connector J2 so as to provide 3.3V and 5V power supplies. The double pin row connector J2 has a third transmitting port 501, a third receiving port 502, a fourth transmitting port 503, and a fourth receiving port 504.
The main control module 2 has a first sending port 201 and a first receiving port 202, and the 232 serial port communication chip U2 has a second sending port 401 and a second receiving port 402. The multi-channel level shift module 3 has a first transmission channel electrically connected between the first transmitting port 201 and the third receiving port 502, a second transmission channel electrically connected between the first receiving port 202 and the third transmitting port 501, a third transmission channel electrically connected between the second transmitting port 401 and the fourth receiving port 504, and a fourth transmission channel (not shown in the figure) electrically connected between the second receiving port 402 and the fourth transmitting port 503.
A first power output end of the power module 1 is electrically connected with the first sending port 201, the first receiving port 202, the second sending port 401 and the second receiving port 402 respectively to provide a 3.3V power; the second power output terminal is electrically connected to the third transmitting port 501, the third receiving port 502, the fourth transmitting port 503 and the fourth receiving port 504, respectively, to provide a 1.8V power.
Because the multi-channel level conversion module 3 is arranged in the electric energy meter testing device, the multi-channel level conversion module can interact with the main control module 2, an external control device connected to the expansion port module 4 can interact with an electric energy meter to be tested connected to the port module 5 of the device to be tested through the multi-channel level module, so that external control detection is completed, when a built-in controller of the electric energy meter testing device fails to meet detection requirements or the built-in controller is abnormal, the external control device can be accessed, and then detection of the electric energy meter to be tested is completed.
Referring to fig. 5, fig. 5 is a schematic circuit diagram of a port module of a detection instrument in an embodiment of a detection device of an electric energy meter according to the present invention. The detecting instrument port module 7 comprises a 485 serial port communication chip U3 with a MAX485 model, an NPN triode Q1 and a second connector J3, and the 485 serial port communication chip U3 is electrically connected with the second connector J3; the first power supply output end is electrically connected with the 485 serial port communication chip U3. The main control module 2 is electrically connected with the base electrode of the NPN triode Q1, and the collector electrode of the NPN triode Q1 is electrically connected with the 485 serial port communication chip U3. The second connector J3 is used to electrically connect with the detection instrument 93.
Referring to fig. 6, fig. 6 is a schematic circuit diagram of an LED lamp control circuit 61 and an LED lamp end module 62 in an embodiment of the electric energy meter detection device of the present invention. The LED lamp control circuit 61 includes a PNP triode Q2, the main control module 2 is electrically connected to the base of the PNP triode Q2, the fourth power output terminal of the power module 1 is electrically connected to the emitter of the PNP triode Q2, and the collector of the PNP triode Q2 is electrically connected to the LED lamp terminal module 62. The power supply control of the main control module 2 to the power supply of the LED lamps can be realized by the arrangement, so that the optical signal feedback of the detection state is realized, and the quantity of the LED lamps is enough to provide the electric energy meter testing device for feeding back various detection conditions.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (6)
1. Electric energy meter testing arrangement, its characterized in that includes:
the system comprises a power supply module, a main control module, a multi-channel level conversion module, an expansion port module, a device to be tested port module, a detection instrument port module, a plurality of LED lamp control circuits and an LED lamp port module;
the power supply module supplies power to the main control module, the multi-channel level conversion module, the expansion port module, the to-be-tested equipment port module, the detection instrument port module and the LED lamp control circuit;
the detection instrument port module is electrically connected with the main control module, and the LED lamp control circuits are electrically connected between the main control module and the LED lamp port module;
the main control module is provided with a first sending port and a first receiving port, the expansion port module is provided with a second sending port and a second receiving port, and the port module of the device to be tested is provided with a third sending port, a third receiving port, a fourth sending port and a fourth receiving port;
the multichannel level conversion module is provided with a first transmission channel, a second transmission channel, a third transmission channel and a fourth transmission channel;
the first transmission channel is electrically connected between the first transmit port and the third receive port, the second transmission channel is electrically connected between the first receive port and the third transmit port, the third transmission channel is electrically connected between the second transmit port and the fourth receive port, and the fourth transmission channel is electrically connected between the second receive port and the fourth transmit port;
the power supply module is provided with a first power supply output end and a second power supply output end, and the output voltage value of the first power supply output end is greater than that of the second power supply output end;
the first power output end is electrically connected with the first transmitting port, the first receiving port, the second transmitting port and the second receiving port respectively;
the second power output end is electrically connected to the third transmitting port, the third receiving port, the fourth transmitting port, and the fourth receiving port, respectively.
2. The electric energy meter testing device of claim 1, wherein:
the multi-channel level conversion module comprises a bidirectional level conversion chip;
the first power supply output end and the second power supply output end are electrically connected with the bidirectional level conversion chip;
the first transmitting port, the first receiving port, the second transmitting port, the second receiving port, the third transmitting port, the third receiving port, the fourth transmitting port and the fourth receiving port are all electrically connected to the bidirectional level shift chip.
3. The electric energy meter testing device of claim 2, wherein:
the power supply module is provided with a third power supply output end, and the output voltage value of the third power supply output end is greater than that of the first power supply output end;
the expansion port module comprises a 232 serial port communication chip and a first connector, and the first connector is electrically connected with the 232 serial port communication chip;
the third power output end is electrically connected with the 232 serial port communication chip, and the second sending port and the second receiving port are located on the 232 serial port communication chip.
4. The electric energy meter testing device of claim 3, wherein:
the power supply module is provided with a fourth power supply output end;
the LED lamp control circuit comprises a PNP triode, the master control module is electrically connected with the base electrode of the PNP triode, the fourth power output end is electrically connected with the emitting electrode of the PNP triode, and the collecting electrode of the PNP triode is electrically connected with the LED lamp end opening module.
5. The electric energy meter testing device according to any one of claims 1 to 4, wherein:
the port module of the detection instrument comprises a 485 serial port communication chip and a second connector, and the 485 serial port communication chip is electrically connected with the second connector;
and the first power output end is electrically connected with the 485 serial port communication chip.
6. The electric energy meter testing device according to any one of claims 1 to 4, wherein:
the number of the LED lamp control circuits is more than ten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020806785.2U CN212275954U (en) | 2020-05-15 | 2020-05-15 | Electric energy meter testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020806785.2U CN212275954U (en) | 2020-05-15 | 2020-05-15 | Electric energy meter testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212275954U true CN212275954U (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020806785.2U Active CN212275954U (en) | 2020-05-15 | 2020-05-15 | Electric energy meter testing device |
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| Country | Link |
|---|---|
| CN (1) | CN212275954U (en) |
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2020
- 2020-05-15 CN CN202020806785.2U patent/CN212275954U/en active Active
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