System for detecting circuit board of relay protection device

Abstract

The utility model provides a system for detecting a circuit board of a relay protection device, which is used for detecting a circuit board (7) to be detected, and is characterized in that the device comprises a power supply box (1) which comprises a first CPU (Central Processing Unit) board (12) positioned in a box body; the relay board (13) is located in the box body, and the relay board (13) is connected to the first CPU board (12); the power panel (14) is located in the box body, and the power panel (14) is connected to the first CPU board (12); the first pin socket (J02) is located on the box body, and the relay board (13) and the first CPU board (12) are both connected to the first pin socket (J02); the detection box (2) comprises a box body; the second pin socket (J08) is located on the box body, and the first pin socket (J02) is connected to the second pin socket (J08); and the second CPU board (23) is positioned in the box body and is connected to the circuit board (7) to be tested.

Description

Technical Field

[0001] The utility model relates to the field of power systems, in particular to a system for detecting a circuit board of a relay protection device. Background Art

[0002] A relay protection device is an automated device that can send a warning signal to the on-duty operator in a timely manner when a power component (such as a generator, line, etc.) or the power system itself in the power system fails and endangers the safe operation of the power system, or directly send a tripping command to the controlled circuit breaker to terminate the development of these events. The relay protection device is a very important part of the power system.

[0003] The relay protection device usually includes multiple circuit boards, and the normal function of each circuit board is a basic element to ensure the overall performance of the relay protection device. Summary of the Utility Model

[0004] In view of this, the utility model provides a system for detecting a circuit board of a relay protection device, which is used to detect a circuit board to be tested, and the device includes:

[0005] A power supply box, including:

[0006] A box body;

[0007] A first CPU board, which is located in the box body;

[0008] A relay board, which is located in the box body, and the relay board is connected to the first CPU board;

[0009] A power supply board, which is located in the box body, and the power supply board is connected to the first CPU board;

[0010] A first pin socket, which is located on the box body, and both the relay board and the first CPU board are connected to the first pin socket;

[0011] A detection box, including:

[0012] A box body;

[0013] A second pin socket, which is located on the box body, and the first pin socket is connected to the second pin socket;

[0014] A second CPU board, which is located in the box body and is connected to the circuit board to be tested.

[0015] According to the system for detecting the circuit board of the relay protection device, a power supply box and a detection box are provided. The power supply box can provide the required power for the detection box, so that the detection box can smoothly perform automatic detection on the circuit board to be tested. Since power-off may be required during the entire detection process, the power supply box equipped with the first CPU board and the power board is used to automatically achieve power-off and power-on, which has a simple structure and low cost.

[0016] According to the system described above, optionally, it further includes: a computer, which is connected to the second CPU board and the circuit board to be tested, and the computer can send control commands to the first CPU board and the second CPU board.

[0017] According to the system described above, optionally, the power supply box further includes: a functional circuit board, which is connected to the first CPU board. This functional circuit board can further ensure the normal operation of the first CPU board.

[0018] According to the system described above, optionally, it further includes: a carrier table, which is located above the detection box, and the carrier table is used to carry the circuit board to be tested. With this carrier table, the circuit board to be tested can be placed more conveniently.

[0019] According to the system described above, optionally, the carrier table is provided with through holes, and the detection box is provided with a plurality of probes. The probes are used to connect to the second CPU board, and the probes can contact the circuit board to be tested through the through holes.

[0020] According to the system described above, optionally, the circuit board to be tested has buttons, and the system further includes: a spacer, which is located above the circuit board to be tested, and the spacer is provided with button pins. The button pins correspond to the buttons one by one and can trigger the buttons to switch between the open state and the closed state. Such a setting facilitates the detection of the buttons.

[0021] According to the system described above, optionally, the first pin socket and the second pin socket are connected by a wire.

[0022] According to the system described above, optionally, both the first pin socket and the second pin socket are double-row pin sockets.

[0023] According to the system described above, optionally, the power supply box has an external plug, and the external plug is connected to the power board. The external plug is used to insert an external power supply to supply power to the power board.

[0024] According to the system described above, optionally, the circuit board to be tested is an HMI circuit board. Description of the Drawings

[0025] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so that those of ordinary skill in the art can more clearly understand the above and other features and advantages of the present utility model. In the drawings:

[0026] Figure 1 It is a schematic diagram of the component connection between the power supply box and the detection box in the system for detecting the circuit board of the relay protection device according to an embodiment of the present utility model.

[0027] Figure 2 It is a schematic diagram of the circuit structure of the power supply box in the system for detecting the circuit board of the relay protection device according to an embodiment of the present utility model.

[0028] Figure 3 It is a schematic diagram of the circuit structure of the detection box in the system for detecting the circuit board of the relay protection device according to an embodiment of the present utility model.

[0029] Figure 4 It is a schematic diagram of the structure of the system for detecting the circuit board of the relay protection device according to the present utility model.

[0030] Among them, the reference numerals are as follows:

[0031] 1 - Power supply box

[0032] 12 - First CPU board

[0033] 13 - Relay board

[0034] 14 - Power board

[0035] 16 - Function circuit board

[0036] 161 - Pin socket

[0037] 17 - Power introduction board

[0038] 2 - Detection box

[0039] 23 - Second CPU board

[0040] 3 - Computer

[0041] 4 - Carrier table

[0042] 5 - Spacer

[0043] 6 - Button pin

[0044] 7 - Circuit board to be tested

[0045] 71 - Button

[0046] BO_J02 - Pin socket

[0047] CPU1_J01 - Pin socket

[0048] CPU1_J02 - pin socket

[0049] CPU1_J09 - pin socket

[0050] CPU2_J01 - pin socket

[0051] CPU2_J02 - pin socket

[0052] CPU2_J09 - pin socket

[0053] J01 - pin socket

[0054] J02 - First pin socket

[0055] J08 - Second pin socket

[0056] J03 - First USB interface

[0057] J04 - First USB connection component

[0058] J05 - Second USB interface

[0059] J06 - Second USB connection component

[0060] PS_J02 - pin socket

[0061] HMI_201 - pin socket

[0062] X201 - pin socket Detailed implementation manners

[0063] To make the objectives, technical solutions and advantages of the present utility model clearer, the following examples are given to further elaborate on the present utility model in detail. In this patent application, nouns and pronouns related to people are not limited to a specific gender.

[0064] In order to ensure the overall performance of the relay protection device, before leaving the factory, it is necessary to detect the key performance of each circuit board. Therefore, the present utility model provides a system for detecting the circuit boards of a relay protection device.

[0065] As Figure 1 shown, it is a schematic diagram of the component connection between the power supply box and the detection box in the system for detecting the circuit board of a relay protection device according to the present utility model. As Figure 2 shown, it is a schematic diagram of the circuit structure of the power supply box in the system for detecting the circuit board of a relay protection device according to the present utility model. As Figure 3 shown, it is a schematic diagram of the circuit structure of the detection box in the system for detecting the circuit board of a relay protection device according to the present utility model. As Figure 4 shown, it is a schematic diagram of the structure of the system for detecting the circuit board of a relay protection device according to the present utility model.

[0066] The system for detecting the circuit board of a relay protection device according to the present utility model includes a power supply box 1 and a detection box 2.

[0067] Among them, the power supply box 1 is mainly used to supply power to the detection box 2. The power supply box 1 includes a box body, a first CPU board 12, a relay board 13 and a power supply board 14. Among them, the material of the box body can be metal, or directly use the box body of the relay protection device itself, or use an insulating box body. Slots or screw holes can be provided in the power supply box 1, and the circuit board or other components can be fixed in the power supply box 1 by plugging or screw fixing.

[0068] The first CPU board 12 is located in the box body. A number of pin sockets 121 are provided on the first CPU board 12, and other devices can be connected to the first CPU board 12 through these pin sockets 121. Figure 1 3 pin sockets are shown, and the specific number of pin sockets can be set according to actual needs. To ensure the normal operation of the first CPU board 12, a functional circuit board 16 can be equipped for the first CPU board 12. The type of the functional circuit board 16 can be the same as any circuit board to be detected in the relay protection device, such as an HMI (Human Machine Interface) circuit board.

[0069] The relay board 13 is located in the box body, and the relay board 13 is connected to the first CPU board 12. As Figure 1 shown, a pin socket BO_J02 is also provided on the relay board 13. The relay board 13 is connected to the first CPU board 12 through this pin socket BO_J02, and the connection between the two can be specifically realized by connecting to the pin socket CPU1_J09 on the first CPU board 12. The pin socket CPU1_J09 on the first CPU board 12 for connecting to the relay board 13 can be different from other pin sockets on the first CPU board 12, such as the different number of pins, so as to avoid the relay board 13 being inserted into the wrong pin socket. The relay board 13 can control the on / off of the corresponding circuit through a relay coil (not shown in the figure), such as controlling the on / off of the corresponding circuit of the power supply board 14.

[0070] The power supply board 14 is located in the box body, and the power supply board 14 is connected to the first CPU board 12. Specifically, as Figure 1 shown, similarly, the power supply board 14 is also connected to the first CPU board 12 through a pin socket, and the connection between the two boards can be specifically realized through a connection plug, such as through a 26PIN connection plug. The power supply board 14 is used to provide power for other components, such as providing power for the first CPU board 12 and the detection box 2.

[0071] The first pin socket J02 is located on the box body, and the relay board 13 and the first CPU board 12 are both connected to the first pin socket J02. The first pin socket J02 can be connected to the detection box 2, thereby realizing power supply to the detection box 2.

[0072] The power board 14 may be integrated with the function of a relay, for example, some pins of the power board 14 are equivalent to switches, such as Figure 1 As shown, the pins BO1_NO and BO1_COM in the power board 14 are equivalent to switches. When they are turned on, the power board 14 can supply power to the detection box 2 through the first pin socket J02. When they are turned off, although the power board 14 is connected to the first pin socket J02, it cannot supply power to the detection box 2 through the first pin socket J02. Specifically, the BO channel in the power board 14 can be controlled by the first CPU board 12, for example, all pins in the power board 14 except the pins DC+ and DC- can be controlled.

[0073] The detection box 2 includes a box body, a second pin socket J08 and a second CPU board 23 .

[0074] The box body can be an insulating shell, so that other parts of the accessories can be prevented from affecting the parts inside the box body as much as possible.

[0075] The second pin socket J08 is located on the box body, and the first pin socket J02 is connected to the second pin socket J08, and the connection between the two pin sockets can be realized by a cable. In this way, the power board 14 can provide power to the components in the detection box 2 through the first pin socket J02 and the second pin socket J08.

[0076] The second CPU board 23 is located in the box body and is connected to the circuit board 7 to be tested. The second CPU board 23 is used to control the entire test process. The second CPU board 23 is pre-set with programs for testing, and the entire test can be completed by calling and executing these programs. How the specific CPU is used and executes the corresponding program belongs to the prior art and will not be repeated here.

[0077] The circuit board to be tested 7 and the second CPU may be connected by a probe. The circuit board to be tested 7 is, for example, an HMI circuit board.

[0078] Here, the first pin socket J02 and the second pin socket J01 are both double-row pin sockets.

[0079] According to the system for detecting the circuit board of the relay protection device, a power supply box 1 and a detection box 2 are provided. The power supply box 1 can provide the required power for the detection box 2, so that the detection box 2 can smoothly perform automatic detection on the circuit board 7 to be tested. Since power-off may be required during the entire detection process, the power supply box 1 provided with the first CPU board 12 and the power board 14 is used to automatically achieve power-off and power-on, which has a simple structure and low cost.

[0080] Optionally, the system for detecting the circuit board of the relay protection device further includes a computer 3. The computer 3 is connected to the second CPU board 23 which is connected to the circuit board 7 to be tested. The computer 3 can input control commands to the second CPU board 23. For example, an operation interface can be displayed on the screen of the computer 3, and the operator can trigger different control commands by selecting corresponding items. After receiving the control commands, the second CPU board 23 calls the corresponding programs to execute the test operations. For example, the operator can select the model of the circuit board 7 to be tested on the operation interface.

[0081] Optionally, the system for detecting the circuit board of the relay protection device further includes a carrier 4. The carrier 4 is located above the detection box 2 and is used to carry the circuit board 7 to be tested. Several through holes (not shown in the figure) can be provided on the carrier 4, and multiple probes (not shown in the figure) are provided on the detection box 2. The probes are used to connect to the second CPU board 23 and can contact the circuit board 7 to be tested through the through holes. Specifically, the probes need to contact each detection point on the circuit board 7 to be tested. With this carrier 4, the circuit board 7 to be tested can be placed more conveniently.

[0082] Optionally, the power supply box 1 has an external plug (not shown in the figure). The external plug is connected to the power board and is used to insert an external power supply to supply power to the power board. The external plug can be connected to a wall power socket to introduce power to the power board 14, and the power board 14 can convert the power into the required level according to actual needs and then output it to the detection box 2.

[0083] Optionally, the system further includes a spacer 5. The spacer 5 is located above the circuit board 7 to be tested, and button pins 6 are provided on the spacer 5. The button pins 6 correspond to the keys 71 one by one and can trigger the keys 71 to switch between the open state and the closed state. Such a setting facilitates the detection of the keys 71. As an exemplary illustration, the spacer 5 can be a transparent resin board.

[0084] Next, taking Figure 2 and Figure 3 as examples, the connection relationships of the components in the power supply box 1 and the detection box 2 will be specifically illustrated. In this embodiment, the circuit board 7 to be tested is an HMI circuit board.

[0085] Among them, the power supply box 1 has a box body, a first CPU board 12, a relay board 13, a power supply board 14, and a functional circuit board 16.

[0086] Among them, the first CPU board 12 has 3 pin sockets 121, the power supply board 14 has 1 pin socket 141, one pin socket 121 on the first CPU board 12 is connected to the pin socket 141 on the power supply board 14, and both the pin socket 121 and the pin socket 141 can be 26PIN pin sockets. Another pin socket 121 on the first CPU board 12 is connected to the pin socket 161 on the functional circuit board 16. There is also a pin socket 121 on the first CPU board 12 connected to the relay board 13. The first CPU board 12 also has a first USB connection component J04, which is connected to the first USB interface J03 on the power supply box 1, and the computer 3 can be connected to the first USB interface J03 through a USB cable, and then send control instructions to the first CPU board 12.

[0087] The first pin socket J02 has 1 - 20 pins, where pins 1 - 6 are connected to the power supply board 14, and pins 7 - 16 are connected to the relay board 13.

[0088] The pins DC+ and DC- on the power supply board 14 are respectively connected to the power introduction board 17, and the power introduction board 17 is connected to an external power supply, and the external power supply can be inserted into a power socket to introduce power, so that the components in the power supply box can all be powered on. The power supply board 14 has a pin socket PS_J02, and the output ends of the pins marked with PS_J02 all represent their connection to a certain pin on the pin socket PS_J02 on the power supply board 14. For example, PS_J02_1 represents the connection to the pin 1 on the pin socket PS_J02. The power supply board 14 also has 6 pins such as pin BO1_NO to pin BO6_NO, and also has 6 pins such as pin BO1_COM to pin BO6_COM. Among them, pin BO1_NO and BO2_NO are respectively connected to pins PS_J02_1 and PS_J02_2 of the pin socket PS_J02 on the power supply board 14, pin BO1_COM and BO2_COM are respectively connected to pin 1 and pin 2 of the first pin socket J02, and pin 1 and pin 2 of the first pin socket J02 are connected to pin 1 and pin 2 of the second pin socket J08. The power supply board 14 can convert the voltage into the required level, for example, convert it to 5V. The other pins of the power supply board 14 are respectively connected to the respective pins on the first pin socket J02.

[0089] The relay board 13 has pins BO8_NO to pins BO12_NO, and pins BO8_COM to pins BO12_COM, which are respectively connected to the pins on the first pin socket J02. The relay board 13 can control the conduction and disconnection of each pin through a relay coil (not shown in the figure).

[0090] The functional circuit board 16 has a pin socket 161, which can be connected to the pin socket CPU1_J02 of the first CPU board 12, and thus can keep the first CPU board 12 working properly.

[0091] The first USB interface J03 in the power supply box 1 is connected to the first USB connection component J04 of the first CPU board 12. The computer 3 can be connected to the first CPU board 12 through the first USB interface J03 to send commands to the first CPU board 12, such as controlling the relay board 13 to turn on and off corresponding pins.

[0092] The detection box 2 includes a second CPU board 23 and a second pin socket J08, and also includes a pin socket J01, a second USB interface J05, and a pin socket HMI_201. The pin socket J01 has 5 pins, and the pin socket HMI_201 has 5 pins.

[0093] Among them, there are 3 pin sockets provided on the second CPU board 23, namely the pin socket CPU2_J01, the pin socket CPU2_J02, and the pin socket CPU2_J09. Among them, the pin socket CPU2_J01 is connected to the pin socket J01, the pins 1 and 2 on the second pin socket J08 to obtain the power provided by the power supply box 1. The pin socket CPU2_J01 is respectively connected to the pin socket X101 on the circuit board 7 to be tested. In this embodiment, the pin socket CPU2_J09 is not connected to any components and can be used as a spare expansion part.

[0094] The second pin socket J08 includes 20 pins. Among them, the pins 1 and 2 of the second pin socket J08 are connected to the pins 1 and 2 of the first pin socket J02. The pin socket HMI_201 has 5 pins. The 3rd pin of the second pin socket J08 is respectively connected to the 1st pin of the pin socket HMI_201 and BO3_NO of the power supply board 14. The 4th pin of the second pin socket J08 is respectively connected to the 1st pin of the pin socket J01 and BO3_COM of the power supply board 14. The 5th pin of the second pin socket J08 is respectively connected to the 2nd pin of the pin socket HMI_201 and BO5_NO of the power supply board 14. The 6th pin of the second pin socket J08 is respectively connected to the 2nd pin of the pin socket J01 and BO5_COM of the power supply board 14. The 7th to 16th pins of the second pin socket J08 are respectively connected to the pins BO8_NO to BO12_NO of the relay board 13, and the pins BO8_COM to BO12_COM, which can be used for subsequent expansion.

[0095] The third to fifth pins of the pin socket J01 are connected to the third to fifth pins of the pin socket HMI_201 in a one-to-one correspondence. This pin socket HMI_201 is also used to connect to the pin socket X201 on the circuit board 7 to be tested.

[0096] The second USB interface J05 is connected to the second circuit board 23 through the second USB connection component J06.

[0097] When an external power supply is inserted into the socket, the power introduction board 17 is powered on, and then it supplies power to the power supply board 14. This power supply board 14 can convert the voltage and supply power to the first CPU board 12 through the pin socket PS_J02. The first CPU board 12 supplies power to the relay board 13 through the connection of the pin socket CPU1_J09 and the pin socket BO_J02, and supplies power to the second circuit board 23 through the first pin socket J02.

[0098] The staff operates the computer 3, selects the corresponding model of the circuit board 7 to be tested on the display plane of the computer 3. Then the computer 3 can be connected to the second USB interface J05 through a line and send a programming command to the second CPU board 23, and program the corresponding program into the circuit board 7 to be tested through the second CPU board 23, the pin socket J01, and the pin socket HMI_201. Then, the computer 3 sends a control command to the first CPU board 12 through the first USB interface J03, so that the first CPU board 12 controls to disconnect the relevant pins of the first pin socket J02, and the detection box 2 is powered off. After a preset time, the computer 3 sends a control command to the first CPU board 12 through the first USB interface J03 to trigger the power supply board 14 to connect the relevant pins of the first pin socket J02, and the detection box 2 is powered on again. Then the computer 3 sends a preset control command to the second CPU board 12 to achieve automatic detection in sequence.

[0099] After connecting the first pin socket J02 and the second pin socket J01 together with a wire, then plug the external plug into the power strip or socket. The staff places the circuit board 7 to be tested on the carrier 4, and then the circuit board 7 to be tested can be fixed on the carrier 4 through other components, such as pressing the circuit board 7 to be tested on the carrier 4. The probes connected to the second CPU board 23 contact the circuit board 7 to be tested.

[0100] The staff selects the circuit board 7 to be tested in the current mode on the carrier 4 on the operation interface of the computer 3, such as a circuit board of type C53207A, and triggers a control command. After receiving the control command, the second CPU board 23 first programs the corresponding program into the circuit board 7 to be tested. After a first preset interval time period, it controls the relay board 13 to power off through the first CPU board 12, and after a second preset interval time period, it controls the relay board 13 to connect the circuit board through the first CPU board 12, so that the circuit board 7 to be tested is powered on again.

[0101] Next, the sensitivity of the buttons, the color of the display panel, the brightness of the background LEDs of the display panel, etc. of the circuit board 7 to be tested are checked according to a predetermined procedure, which will not be elaborated here.

[0102] More specifically, when the external power supply is inserted into the socket, the power introduction board 17 is powered on, and then the power supply board 14 is powered. The power supply board 14 can perform voltage conversion and supply power to the first CPU board 12 through the pin socket PS_J02. The first CPU board 12 supplies power to the relay board 13 through the connection of the pin socket CPU1_J09 and the pin socket BO_J02, and supplies power to the second circuit board 23 through the first pin socket J02.

[0103] The operator operates the computer 3, selects the corresponding model of the circuit board 7 to be tested on the display plane of the computer 3. Then, the computer 3 can be connected to the second USB interface J05 through a line and send a programming command to the second CPU board 23, and program the corresponding program into the circuit board 7 to be tested through the second CPU board 23, the pin socket J01, and the pin socket HMI_201. Then, the computer 3 sends a control command to the first CPU board 12 through the first USB interface J03, so that the first CPU board 12 controls the power supply board 14 to disconnect the relevant pins of the first pin socket J02, and the detection box 2 is powered off. After a preset time, the computer 3 sends a control command to the first CPU board 12 through the first USB interface J03 to trigger the power supply board 14 to connect the relevant pins of the first pin socket J02, and the detection box 2 is powered on again. Then the computer 3 sends a preset control command to the second CPU board 12 to achieve automatic detection in sequence.

[0104] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A system for detecting a circuit board of a relay protection device, which is used to detect a circuit board to be tested (7), characterized in that: The device comprises: The power supply box (1) comprises: Box; A first CPU board (12), which is located in the housing; A relay board (13) is located in the box, and the relay board (13) is connected to the first CPU board (12); A power board (14), which is located in the box, and the power board (14) is connected to the first CPU board (12); A first pin socket (J02), which is located on the box body, and the relay board (13) and the first CPU board (12) are both connected to the first pin socket (J02); A detection kit (2), comprising: Box body; A second pin socket (J08), which is located on the box body, and the first pin socket (J02) is connected to the second pin socket (J08); A second CPU board (23) is located in the box body and connected to the circuit board to be tested (7).

2. The system according to claim 1, characterized in that Also includes: A computer (3) is connected to the second CPU board (23) and the circuit board (7) to be tested, and the computer (3) is capable of sending control commands to the first CPU board (12) and the second CPU board (23).

3. The system according to claim 1, characterized in that The power supply box (1) also includes: A functional circuit board (16) is connected to the first CPU board (12).

4. The system according to claim 1, characterized in that Also includes: A carrying platform (4) is located above the detection box (2), and the carrying platform (4) is used to carry the circuit board (7) to be tested.

5. The system according to claim 4, characterized in that The carrier platform (4) is provided with a through hole, and the detection box (2) is provided with a plurality of probes, the probes are used to connect to the second CPU board (23), and the probes can contact the circuit board (7) to be tested through the through hole.

6. The system according to claim 1, characterized in that The circuit board to be tested (7) has a button (71), and the system further comprises: A spacer plate (5), the spacer plate (5) being located above the circuit board (7) to be tested, the spacer plate (5) being provided with a button pin (6), the button pin (6) corresponding one-to-one with the button (71) and capable of triggering the button (71) to switch between an open state and a closed state.

7. The system according to claim 1, characterized in that The first pin socket (J02) and the second pin socket (J08) are connected via an electric wire.

8. The system according to claim 1, characterized in that The first pin socket (J02) and the second pin socket (J08) are both double-row pin sockets.

9. The system according to claim 1, characterized in that The power supply box (1) has an external plug, which is connected to the power board (14) and is used to insert an external power source to supply power to the power board (14).

10. The system according to any one of claims 1 to 9, characterized in that: The circuit board (7) to be tested is an HMI circuit board.

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