CN203825128U - Tester for on-load capability of communication interface of acquisition terminal equipment with communication module - Google Patents
Tester for on-load capability of communication interface of acquisition terminal equipment with communication module Download PDFInfo
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- CN203825128U CN203825128U CN201420271651.XU CN201420271651U CN203825128U CN 203825128 U CN203825128 U CN 203825128U CN 201420271651 U CN201420271651 U CN 201420271651U CN 203825128 U CN203825128 U CN 203825128U
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- 238000004891 communication Methods 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to terminal equipment (such as a speical variable terminal, a concentrator and an electric energy meter) with a communication module, frequently used in a smart power grid, in particular to a tester for the on-load capability of a communication interface of acquisition terminal equipment with a communication module, and solves the problems that a conventional method for testing the on-load capability of the communication interface of the acquisition terminal equipment is cumbersome and error-prone. The tester comprises a housing and a test circuit in the housing; the test circuit comprises a selection switching control circuit, a control MCU circuit, a signal drive circuit, a relay control circuit, a load switching circuit, a DC voltage measurement display circuit, a voltage signal testing interface and a load switching indicating circuit. The tester is specially designed for testing the on-load capability of the communication interface, is comprehensive in measuring object, includes the terminal equipment with the communication module, frequently used in the smart power grid, meets the requirement on the testing of the on-load capability of various communication interfaces on sites, is automatic in testing process, is simple to operate, and improves the testing efficiency.
Description
Technical field
The utility model relates to the communication interface load capacity testing apparatus of the terminal device with communication module (as special change acquisition terminal, concentrator and electric energy meter etc.) that intelligent grid is conventional, is specially the acquisition terminal device communication interface load capacity tester with communication module.
Background technology
Discovery in service at the scene, communication module interchangeability with the acquisition terminal equipment of communication module (as table meters such as electric energy meters) is poor, the acquisition terminal equipment that A factory produces can only be used the module of B module manufacturer production to communicate, if be replaced by the module that C factory produces, because of module communication state power consumption, do not mate with acquisition terminal device communication interface power supply fan-out capability or module and inconsistent the causing of acquisition terminal device talk speed tolerance cannot normal communications, even have influence on metering accuracy.Acquisition terminal equipment and communication module combine to use and have matching problem, and while communicating by letter as carrier module, power is larger, by acquisition terminal device power supply (DPS) draw across, cause acquisition terminal equipment not worked; Acquisition terminal device communication interface load capacity is not enough, cannot drive the normal work of communication module etc., for solving problems, power information gathers series standard and has stipulated communication module all technical and power consumption requirement, to acquisition terminal device communication interface, carry out unified and standard, increase the requirement of communication interface load capacity, and formulate corresponding test method and examine, further ensure the interchangeability of the communication module of acquisition terminal or electric energy meter.
Traditional measuring method is which pin that first finds acquisition terminal device communication interface to define is power supply, the pull-up resistor that respective modules is required connects, use again the magnitude of voltage of multimeter test port, this method need to manually go for power interface, easily make mistakes, different tested objects needs the different ohmic load of manual access, and the general scattered placement of ohmic load is more loaded down with trivial details.
Summary of the invention
The problem that method that the utility model solves existing manual testing's acquisition terminal device communication interface load capacity is loaded down with trivial details, easily make mistakes, provides a kind of acquisition terminal device communication interface load capacity tester with communication module.
The utility model is to adopt following technical scheme to realize: with the acquisition terminal device communication interface load capacity tester of communication module, the test circuit in housing and housing, consist of, described test circuit comprises selects control switching circuit, control MCU circuit, signal drive circuit, control relay circuit, load commutation circuit, DC voltage measurement display circuit, voltage signal test interface, load to switch indicating circuit;
Described control MCU circuit contains STM32F103 chip;
Described selection control switching circuit is a runback button (AN1), and its one end is connected with STM32F103 chip signal input end, other end ground connection, and be placed on the panel of housing;
Described signal drive circuit consists of ULN2003 chip, and its input bus is connected with the output bus (PC0-PC9) of STM32F103 chip;
Described control relay circuit comprises a plurality of relays, and one end of each relay is all connected with power supply, and the other end of each relay is connected with each line end of the output bus of ULN2003 chip respectively;
Described load commutation circuit consists of the quantity parallel branch identical with relay quantity, and each parallel branch is in series by normally opened contact and a pull-up resistor of a relay;
DC voltage measurement display circuit is a voltage table that is connected in the parallel branch two ends of load commutation circuit, and it is placed on the panel of housing;
Described voltage signal test interface comprises the emulation module terminal box corresponding with acquisition terminal device communication interface, emulation module terminal box is drawn housing with wire, one end of wire is connected with the parallel branch two ends of load commutation circuit, and the other end is connected with the supply pin in emulation module terminal box;
Described load is switched indicating circuit and is comprised a plurality of light emitting diodes that quantity is identical with parallel branch number in load commutation circuit, one end of each light emitting diode is all connected with power supply, and the other end of each light emitting diode is connected with each line end of the output bus of ULN2003 chip respectively; Each light emitting diode is placed on the panel of housing.
Communication module on tested acquisition terminal equipment is pulled down from table meter, corresponding emulation module terminal box is accessed to its communication interface.During tester start, control MCU program acquiescence gear at first grade, the first gear relay adhesive, the pull-up resistor of the first gear drops into, and the pull-up resistor of other unit disconnects, and the pilot lamp of the first gear (light emitting diode) is glittering; After selecting the button of control switching circuit to press, send a low level signal to controlling MCU, controlling MCU receives after control signal, after internal processes judgement, fill order is changed to second gear, the second gear relay adhesive, the pull-up resistor of the second gear drops into, and the pull-up resistor of other unit disconnects, and the pilot lamp of the second gear is glittering; Press continuously the button of selecting control switching circuit, each gear relay rotation adhesive, each gear pull-up resistor rotation drops into, and the pilot lamp of respective notch is glittering.In DC voltage gauge outfit, can automatically show the voltage measuring value under different loads resistance, according to voltage measuring value, can judge the load capacity of communication interface.
The utility model is specially for the requirement of communication interface load capacity test designs, measuring object is comprehensive, included the conventional terminal device with communication module of intelligent grid, to meet the on-the-spot needs to the test of multiple communication interface load capacity, test process automation, simple to operate, improved work efficiency on-the-spot and testing laboratory's test.Voltage signal test interface adopts emulation module terminal box, selects corresponding its power interface of corresponding emulation module terminal box to insert, without manually searching the concrete hole position of modular power source interface in socket, convenient and swift.Directly, from the voltage inlet wire power taking (input of 100-380V wide region) of table meter, without separately connecing power supply and battery charging, convenient work is carried out.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of the utility model test circuit;
Fig. 2 is the schematic diagram of controlling MCU circuit;
Fig. 3 is the schematic diagram of driving circuit;
Fig. 4 is the schematic diagram of control relay circuit;
Fig. 5 is the schematic diagram of load commutation circuit;
Fig. 6 is the schematic diagram that indicating circuit is switched in load;
Fig. 7 is guidance panel figure of the present utility model.
Embodiment
Acquisition terminal device communication interface load capacity tester with communication module, the test circuit in housing and housing, consist of, described test circuit comprises selects control switching circuit 1, control MCU circuit 2, signal drive circuit 3, control relay circuit 4, load commutation circuit 5, DC voltage measurement display circuit 6, voltage signal test interface 7, load to switch indicating circuit 8;
Described control MCU circuit 2 contains STM32F103 chip; During concrete enforcement, chip need configure corresponding peripheral circuit, and the configuration of peripheral circuit is that those skilled in the art easily realize.
Described selection control switching circuit 1 is a runback button (AN1), and its one end is connected with STM32F103 chip signal input end, other end ground connection, and be placed on the panel of housing;
Described signal drive circuit 3 consists of ULN2003 chip, and its input bus is connected with the output bus (PC0-PC9) of STM32F103 chip;
Described control relay circuit 4 comprises a plurality of relays, and one end of each relay is all connected with power supply, and the other end of each relay is connected with each line end of the output bus of ULN2003 chip respectively;
Described load commutation circuit 5 consists of the quantity parallel branch identical with relay quantity, and each parallel branch is in series by normally opened contact and a pull-up resistor of a relay;
DC voltage measurement display circuit 6 is voltage tables that are connected in the parallel branch two ends of load commutation circuit, and it is placed on the panel of housing;
Described voltage signal test interface 7 comprises the emulation module terminal box corresponding with acquisition terminal device communication interface, emulation module terminal box is drawn housing with wire, one end of wire is connected with the parallel branch two ends of load commutation circuit, and the other end is connected with the supply pin in emulation module terminal box;
Described load is switched indicating circuit 8 and is comprised a plurality of light emitting diodes that quantity is identical with parallel branch number in load commutation circuit 5, one end of each light emitting diode is all connected with power supply, and the other end of each light emitting diode is connected with each line end of the output bus of ULN2003 chip respectively; Each light emitting diode is placed on the panel of housing.
During concrete enforcement, according to tested object (specially remote communication interface or the local communication interface of transformer terminals, concentrator, electric energy meter), select required load resistance.As a kind of example, the quantity of pull-up resistor (being also quantity or the parallel branch number of relay) is five, and the resistance of five pull-up resistors is respectively unloaded resistance, 8 Ω, 30 Ω, 96 Ω and empty resistance (there is no resistance).
When the first gear, pull-up resistor is unloaded, supply voltage value when operator can carry out zero load to power interface is measured, tested module is pulled down from table meter, the test interface box of respective modules is accessed to its socket, in the DC voltage gauge outfit of load capacity test module, can automatically show voltage measuring value.
When the second gear, pull-up resistor is the pure resistive load of 8 Ω, and operator can carry out magnitude of voltage measurement to the telecommunication power interface of concentrator or special transformer terminals.
When third gear, pull-up resistor is the pure resistive load of 30 Ω, and operator can carry out magnitude of voltage measurement to the communication unit power interface of concentrator local communication power interface or three-phase intelligent electric-energy meter.
When fourth speed position, pull-up resistor is the pure resistive load of 96 Ω, and operator can carry out magnitude of voltage measurement to the communication unit power interface of the local communication power interface of collector or single-phase intelligent electric energy meter.
At the 5th gear, be reserved gear, internal load resistance is empty.
Claims (3)
1. the acquisition terminal device communication interface load capacity tester with communication module, it is characterized in that, the test circuit in housing and housing, consist of, described test circuit comprises selects control switching circuit (1), control MCU circuit (2), signal drive circuit (3), control relay circuit (4), load commutation circuit (5), DC voltage measurement display circuit (6), voltage signal test interface (7);
Described control MCU circuit (2) contains STM32F103 chip;
Described selection control switching circuit (1) is a runback button (AN1), and its one end is connected with STM32F103 chip signal input end, other end ground connection, and be placed on the panel of housing;
Described signal drive circuit (3) consists of ULN2003 chip, and its input bus is connected with the output bus (PC0-PC9) of STM32F103 chip;
Described control relay circuit (4) comprises a plurality of relays, and one end of each relay is all connected with power supply, and the other end of each relay is connected with each line end of the output bus of ULN2003 chip respectively;
Described load commutation circuit (5) consists of the quantity parallel branch identical with relay quantity, and each parallel branch is in series by normally opened contact and a pull-up resistor of a relay;
DC voltage measurement display circuit (6) is a voltage table that is connected in the parallel branch two ends of load commutation circuit, and it is placed on the panel of housing;
Described voltage signal test interface (7) comprises the emulation module terminal box corresponding with acquisition terminal device communication interface, emulation module terminal box is drawn housing with wire, one end of wire is connected with the parallel branch two ends of load commutation circuit, and the other end is connected with the supply pin in emulation module terminal box.
2. the acquisition terminal device communication interface load capacity tester with communication module according to claim 1, it is characterized in that, also comprise load switching indicating circuit (8), described load is switched indicating circuit (8) and is comprised a plurality of light emitting diodes that quantity is identical with parallel branch number in load commutation circuit (5), one end of each light emitting diode is all connected with power supply, and the other end of each light emitting diode is connected with each line end of the output bus of ULN2003 chip respectively; Each light emitting diode is placed on the panel of housing.
3. the acquisition terminal device communication interface load capacity tester with communication module according to claim 1 and 2, it is characterized in that, the quantity of pull-up resistor is that relay or parallel branch number are five, and the resistance of five pull-up resistors is respectively unloaded resistance, 8 Ω, 30 Ω, 96 Ω and empty resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271651.XU CN203825128U (en) | 2014-05-23 | 2014-05-23 | Tester for on-load capability of communication interface of acquisition terminal equipment with communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271651.XU CN203825128U (en) | 2014-05-23 | 2014-05-23 | Tester for on-load capability of communication interface of acquisition terminal equipment with communication module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203825128U true CN203825128U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271651.XU Expired - Lifetime CN203825128U (en) | 2014-05-23 | 2014-05-23 | Tester for on-load capability of communication interface of acquisition terminal equipment with communication module |
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| Country | Link |
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| CN (1) | CN203825128U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391267A (en) * | 2014-11-27 | 2015-03-04 | 国家电网公司 | Device and method for testing belt load capacity of electric energy metering equipment |
| CN104020372B (en) * | 2014-05-23 | 2017-04-12 | 国家电网公司 | Acquisition terminal equipment communication interface load capacity tester with communication module |
-
2014
- 2014-05-23 CN CN201420271651.XU patent/CN203825128U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020372B (en) * | 2014-05-23 | 2017-04-12 | 国家电网公司 | Acquisition terminal equipment communication interface load capacity tester with communication module |
| CN104391267A (en) * | 2014-11-27 | 2015-03-04 | 国家电网公司 | Device and method for testing belt load capacity of electric energy metering equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |