Distribution automation combined test tool

Abstract

The utility model relates to a power distribution automation combined test tool, which effectively solves the problems that the existing test tool can only test singly, the test efficiency is very low and the like. Comprising a main control unit, the main control unit comprises a main control CPU, and the main control CPU is respectively connected with an active communication interface and a network port; the slave control unit comprises two slave control CPUs (Central Processing Unit); the bus unit comprises a source current and voltage bus, a power bus and a communication bus; the test tool is convenient to use, through the arrangement of the expansion module, the test module, the main control unit and the like, when two test tools are connected, only the source interface in the second test tool needs to be connected with the expansion interface, and the source communication interface in the second test tool is directly connected with the communication bus; and the source communication interface is connected with the expansion communication interface, so that a plurality of test stations can be expanded, and a plurality of testers can use one source device at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution detection tooling, in particular to a combined test tooling for distribution automation. Background Technique

[0002] The test work of power products is an important step before a company's new products are put on the market.

[0003] Testing can not only discover interface problems, performance problems, etc. in the software, optimize the user experience in the problems, improve user satisfaction, but also reduce the software maintenance cost. The earlier the problems are discovered in the testing stage, the lower the repair cost.

[0004] However, the existing electronic product detection tooling still has the following problems:

[0005] 1. During the test process of power products, in the case of only one source device, the existing test tooling can only be tested individually, and the test efficiency is very slow. The increase in source devices will also increase the development cost, which does not conform to the concept of cost reduction and efficiency improvement of enterprises.

[0006] 2. At the same time, since the skill level, experience, etc. of the test personnel will all affect the test results, the test results may be subjective. The test work needs to formulate a test plan, write test cases, execute tests, analyze test results, etc., and the process may be relatively cumbersome. Content of the Utility Model

[0007] In view of the above situation, to overcome the defects of the prior art, the purpose of the utility model is to provide a combined test tooling for distribution automation, which effectively solves the problems mentioned in the background technique.

[0008] The technical solution it adopts is that the utility model includes:

[0009] A main control unit, the main control unit includes a main control CPU, and a source communication interface and a network port are respectively connected to the main control CPU;

[0010] A slave control unit, the slave control unit includes two slave control CPUs;

[0011] A bus unit, the bus unit includes a source current and voltage bus, a power supply bus and a communication bus, and the main control CPU and the two slave control CPUs are respectively connected to the communication bus;

[0012] A source interface, the source interface is connected to the source current and voltage bus and the power supply bus;

[0013] A power supply module, the power supply module includes an AC / DC power supply module, the AC / DC power supply module is connected to the power supply bus, and the AC / DC power supply module is connected with a power indicator light;

[0014] An expansion module, the expansion module includes an expansion interface and an expansion communication interface, and the expansion communication interface is serially connected to a communication bus;

[0015] A source isolation module, the source isolation module is provided with two switching switches connected to the expansion interface, and also includes two fuses connected in series with one of the switching switches;

[0016] A test module, the test module includes two test stations, the two test stations are respectively connected to corresponding slave control CPUs, a TA / TV isolation transformer is connected between the test station and the source current and voltage bus, and a plurality of pressure plates and relays are arranged between the test station and the TA / TV isolation transformer, and the plurality of relays are respectively connected to the slave control CPUs of the corresponding test stations.

[0017] Preferably, reverse diodes are respectively connected in parallel to the plurality of relays.

[0018] Preferably, the two test stations are respectively connected with corresponding operation lights, fault lights and buzzers, and the two groups of operation lights, fault lights and buzzers are respectively connected to the corresponding slave control CPUs.

[0019] Preferably, the two slave control CPUs are respectively connected with buttons.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. Through the settings of the expansion module, test module and main control unit, etc., when connecting two test toolings, only need to connect the source interface in the second test tooling to the expansion interface, directly connect the source communication interface in the second test tooling to the communication bus, and then connect the source communication interface to the expansion communication interface. By analogy, multiple test stations can be expanded, and multiple test personnel can use one source device at the same time.

[0022] 2. Through the settings of the main control unit, slave control unit and test module, etc., the influence on the test results caused by problems such as the skill level and experience of test personnel is solved, making the test results more objective and the test accuracy higher. Description of the Drawings

[0023] Figure 1 is a flow schematic diagram of the present utility model.

[0024] Figure 2 is a circuit schematic diagram of the present utility model.

[0025] Explanation of the reference numerals in the schematic diagram:

[0026] 1. Main control CPU; 2. Source communication interface; 3. Network interface; 4. Slave control CPU; 5. Source current and voltage bus; 6. Power supply bus; 7. Communication bus; 8. Source interface; 9. AC / DC power module; 10. Expansion interface; 11. Expansion communication interface; 12. Switch; 13. Fuse; 14. Test station; 15. TA / TV isolation transformer; 16. Pressure plate; 17. Relay; 18. Reverse diode; 19. Button. Detailed implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] It is given by Figures 1 to 2 and includes:

[0029] Main control unit, the main control unit includes a main control CPU 1, and a source communication interface 2 and a network interface 3 are respectively connected to the main control CPU 1. During use, the tester connects the test computer to the network interface 3, and a switch can be added at the network interface 3 to increase the number of test computers connected to the network interface 3. All test computers are connected to the main control CPU 1, and the main control CPU 1 feeds back each station connection request and outputs the available source current or voltage.

[0030] Slave control unit, the slave control unit includes two slave control CPUs 4;

[0031] Bus unit, the bus unit includes a source current and voltage bus 5, a power supply bus 6 and a communication bus 7. The main control CPU 1 and the two slave control CPUs 4 are respectively connected to the communication bus 7, and the main control CPU 1 uniformly controls the two slave control CPUs 4 through the communication bus 7.

[0032] Source interface 8, the source interface 8 is connected to the source current and voltage bus 5 and the power supply bus 6. There are mainly two communication methods for the source interface 8: one is serial port RX / TX interface control, and the other is RJ45 network interface 3 communication method control;

[0033] Power supply module. The power supply module includes an AC / DC power supply module 9, which can provide DC24V and DC5V power for the internal DC power supply chip or relay 17 to ensure that each working module has a matching power supply. The AC / DC power supply module 9 is connected to the power bus 6. The AC / DC power supply module 9 is connected with a power indicator light. When the power indicator light is on, it indicates that the AC / DC power supply module 9 outputs normally;

[0034] The source interface 8 externally connects to the current sources IA, IB, IC, voltage sources UA, UB, UC, AC power supply AC+, AC-, DC power supply DC+, DC- of the external device. Among them, the current sources are connected to the source current voltage bus 5, and the AC power supply AC+, AC- are connected to the power bus 6 and supply power to the power supply module;

[0035] Expansion module. The expansion module includes an expansion interface 10 and an expansion communication interface 11. The external leads of the expansion interface 10 include current sources IA, IB, IC, voltage sources UA, UB, UC, AC power supply AC+, AC-, DC power supply DC+. The expansion communication interface 11 is serially connected to the communication bus 7. During normal use, the terminals are left unconnected. When connecting two test fixtures, only need to connect the source interface 8 in the second test fixture to the expansion interface 10, directly connect the source communication interface 2 in the second test fixture to the communication bus 7, and then connect the source communication interface 2 to the expansion communication interface 11. By analogy, multiple test stations 14 can be expanded to supply multiple test personnel to use one source device at the same time;

[0036] Source isolation module. The source isolation module is provided with two switching switches 12 connected to the expansion interface 10. The switching switches 12 have a very strong and safe isolation effect. It also includes two fuses 13 connected in series with one of the switching switches 12. The AC power supply in the power bus 6 is connected in series with the two fuses 13, and the two fuses 13 are then connected to the AC terminals of the expansion interface 10 through the switching switches 12. The current sources and voltage sources on the source current voltage bus 5 are connected to the current and voltage terminals of the expansion interface 10 through the switching switches 12;

[0037] Test module, the test module includes two test stations 14, and current sources IA, IB, IC, voltage sources UA, UB, UC, DC power supplies DC+ and DC- are externally led out from the interfaces of the test stations 14. The two test stations 14 are respectively connected to the corresponding slave CPUs 4. A TA / TV isolation transformer 15 is connected between the test station 14 and the source current and voltage bus 5. When the current source TA of the TA / TV isolation transformer 15 has no output, a short circuit is formed on the secondary side. When the voltage source TV has no output, an open circuit is formed on the secondary side. A plurality of pressure plates 16 and relays 17 are arranged between the test station 14 and the TA / TV isolation transformer 15. In this embodiment, the pressure plates 16 include four current control pressure plates 16, four voltage control pressure plates 16 and two DC power output control pressure plates 16. The interfaces of the test stations 14 are connected in series to the auxiliary contacts of the relays 17 through the pressure plates 16, and the relays 17 are connected to the TA / TV isolation transformer 15. The pressure plates 16 can be manually controlled to be turned on and off, and the pressure plates 16 can prevent the contacts of the relays 17 inside the test tooling from sticking. The plurality of relays 17 are respectively connected to the slave CPUs 4 of the corresponding test stations 14. The two slave CPUs 4 can control the on and off of the relays 17, and thus control the on and off of the current and voltage signals.

[0038] To improve the anti-interference performance of the test station 14, reverse diodes 18 are respectively connected in parallel to the plurality of relays 17. The large-energy interference sources can be discharged in time through the reverse diodes 18 to protect the components at the subsequent stage.

[0039] To facilitate observing the circuit fault conditions inside the test tooling, corresponding operating lights, fault lights and buzzers are respectively connected to the two test stations 14. The two groups of operating lights, fault lights and buzzers are respectively connected to the corresponding slave CPUs 4. When the test tooling works normally, the operating lights are always on. When there are problems with the circuits inside the test tooling, the two slave CPUs 4 respectively control the corresponding fault lights and buzzers to work, prompting the test personnel to maintain the test tooling.

[0040] The two slave CPUs 4 are respectively connected with buttons 19. Once a fault occurs in the slave CPU 4, the control can be cut off and the source control output can be turned off, so as to ensure the safety of the equipment. Or when the test station 14 wants to temporarily suspend the source output, the pause button can be pressed. At this time, the current and voltage outputs will be interrupted and the fault lights will be on, which is convenient for the test personnel to adjust the test equipment or the circuit.

[0041] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A combined test tool for distribution automation, characterized in that, Comprising: A main control unit, the main control unit includes a main control CPU (1), and an active communication interface (2) and a network port (3) are respectively connected to the main control CPU (1); A slave control unit, the slave control unit includes two slave control CPUs (4); A bus unit, the bus unit includes a source current and voltage bus (5), a power supply bus (6) and a communication bus (7), and the main control CPU (1) and the two slave control CPUs (4) are respectively connected to the communication bus (7); A source interface (8), the source interface (8) is connected to the source current and voltage bus (5) and the power supply bus (6); A power supply module, the power supply module includes an AC / DC power supply module (9), the AC / DC power supply module (9) is connected to the power supply bus (6), and a power indicator is connected to the AC / DC power supply module (9); An expansion module, the expansion module includes an expansion interface (10) and an expansion communication interface (11), and the expansion communication interface (11) is serially connected to the communication bus (7); A source isolation module, the source isolation module is provided with two changeover switches (12) connected to the expansion interface (10), and also includes two fuses (13) connected in series with one of the changeover switches (12); A test module, the test module includes two test stations (14), the two test stations (14) are respectively connected to the corresponding slave control CPUs (4), a TA / TV isolation transformer (15) is connected between the test station (14) and the source current and voltage bus (5), and a plurality of pressure plates (16) and relays (17) are arranged between the test station (14) and the TA / TV isolation transformer (15), and the plurality of relays (17) are respectively connected to the slave control CPU (4) of the corresponding test station (14).

2. The combined test tool for distribution automation according to claim 1, characterized in that Reverse diodes (18) are respectively connected in parallel to the plurality of relays (17).

3. The combined test tool for distribution automation according to claim 1, wherein The two test stations (14) are respectively connected with corresponding operation lights, fault lights and buzzers, and the two groups of operation lights, fault lights and buzzers are respectively connected to the corresponding slave control CPUs (4).

4. The combined test tool for distribution automation according to claim 1, characterized in that The two slave control CPUs (4) are respectively connected with buttons (19).

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