A calibration and function verification device for controlling motherboards

Abstract

This utility model relates to a calibration and function verification device for a control motherboard. The device includes a main body with a mounting plate and multiple spring pins. Limit plates are elastically positioned vertically above the mounting plate on the main body, with limit grooves on the limit plates and through holes at the bottom of the grooves. A lower pressure plate is movably mounted vertically on the main body. A circuit board connected to the lower end of each spring pin is located on the main body. The main body also has a communication interface and a power supply connected to the circuit board; the communication interface is used to connect to a host computer. The control motherboard to be tested is placed in the limit groove, and the lower pressure plate presses down to make the spring pins make conductive contact with the corresponding terminals on the control motherboard. This calibration device can calibrate the voltage values, relays, and signals of multiple channels on the control motherboard to be tested in one operation, solving the problems of high workload, low efficiency, and long delivery cycles in existing systems.

Description

Technical Field

[0001] This utility model relates to the field of calibration and testing equipment technology, specifically to a calibration and function verification device for a control motherboard. Background Technology

[0002] A combustible gas monitoring and alarm system generally consists of an alarm controller and detectors. The controller can be placed in the duty room and mainly monitors and controls various monitoring points. The detectors are installed at the locations where gas leaks are most likely to occur. Their core component is a built-in gas sensor, which detects the concentration of gas in the air. The detector converts the gas concentration detected by the gas sensor into an electrical signal, which is transmitted to the alarm controller via cable. The higher the gas concentration, the stronger the electrical signal. When the gas concentration reaches or exceeds the alarm point set by the alarm controller, the alarm sounds to remind the user to take safety measures and activates ventilation, shut-off, and sprinkler systems to prevent explosions, fires, and poisoning accidents, thereby ensuring safe production activities.

[0003] Gas detectors typically employ either 8-channel 4-20mA detectors or 8-channel RS485 signal detectors powered by 24V DC. To ensure product quality, the aforementioned alarm controllers undergo factory calibration for the 8-channel 4-20mA signal, RS-485 / 4-20mA / PC communication testing, relay function testing, and DC24V output voltage testing to guarantee normal communication between the controller and the detector / PC. Due to the numerous peripheral ports and functions of the alarm controller, the 4-20mA signal communication calibration and module testing are cumbersome, requiring manual operation of each function individually. For example, calibrating a 4-20mA signal requires using a signal generator to calibrate each of the 1st to 8th channels one by one; relay testing requires using a multimeter to test each relay individually; PC485 testing requires connecting the controller's PC485 port to a PC via a serial port tool and issuing commands from the host computer; S-485 / 4-20mA testing requires connecting the controller's S-485 interface to a detector test board; and controller output voltage testing requires inserting the red and black probes of a multimeter into the output terminal, setting the multimeter to DC voltage mode, and checking the controller's output voltage value. This calibrating and testing process results in a large workload, low efficiency, and high production costs, significantly impacting sales and delivery cycles. The entire calibration / inspection process takes approximately 6-8 minutes per unit. Utility Model Content

[0004] The purpose of this invention is to provide a calibration and function verification device for controlling motherboards, in order to solve the problems of large workload and low efficiency, high production cost, and serious impact on sales and delivery cycle in the existing technology.

[0005] To achieve the above objectives, the present invention provides a calibration and function verification device for a control motherboard, which adopts the following technical solution: A calibration and function verification device for a control motherboard includes a device body, a mounting plate on the device body, a plurality of spring pins on the mounting plate, a limit plate elastically positioned above the mounting plate on the device body, a limit groove on the limit plate for placing the control motherboard to be tested, a through hole at the bottom of the limit groove for the upper end of the spring pin to pass through, and a lower pressure plate movably positioned on the device body for pressing down the limit plate and the control motherboard to be tested on it, so that the spring pins pass through the through hole and contact the corresponding terminals on the control motherboard to be tested; a circuit board connected to the lower end of each spring pin is provided on the device body, and a communication interface and a power supply connected to the circuit board are provided on the device body, the communication interface being used to connect to a host computer.

[0006] The mounting plate is provided with multiple guide holes, and the limiting plate is provided with guide posts that correspond one-to-one with each guide hole and cooperate with the up and down guide movement. A compression spring is fitted on the outer side of the guide post between the mounting plate and the limiting plate.

[0007] The device body is provided with a guide rod whose length is along the vertical direction, and the limiting plate and the lower pressure plate are both guided and moved on the guide rod.

[0008] The device body is equipped with a pressing mechanism that drives the lower pressure plate to move up and down. The pressing mechanism adopts a push-pull quick clamp or an electric push rod, and the movable end of the push-pull quick clamp or electric push rod is fixedly connected to the lower pressure plate.

[0009] The device body is provided with an adjustment groove that extends in the vertical direction. A push-pull quick clamp or electric push rod is fixed to the device body through a connecting plate. The connecting plate is provided with a locking bolt, which moves up and down through the adjustment groove.

[0010] The device body is equipped with a voltage detection digital tube and a relay status detection indicator light connected to the circuit board.

[0011] Insulating pressure columns are provided on the lower pressure plate.

[0012] The communication interface includes an RS485 interface and / or a PC485 interface.

[0013] The device body is equipped with anti-slip fixing feet.

[0014] The beneficial effects of this utility model are as follows: Before leaving the factory, the control motherboard to be tested is placed in the limiting groove of the limiting plate. The lower pressure plate presses down on the control motherboard and the limiting plate, allowing the spring pin to pass through the through hole and make conductive contact with the corresponding terminal on the control motherboard, thus connecting the control motherboard to the circuit board. After power-on, it connects to the host computer via a communication interface, and the host computer issues commands to perform testing and verification on the control motherboard. Compared with existing technologies, the verification device of this application can calibrate the voltage values, relays, and signals of multiple channels on the control motherboard to be tested in one go, effectively solving the pain points of cumbersome operation, large workload, low efficiency, high production cost, and long delivery cycle of the original method. Actual verification shows that this verification device improves overall efficiency by 600%-800% compared to the original calibration method, and the entire calibration and testing process is within 60 seconds. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of a calibration and function verification device for controlling a motherboard according to the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure after removing the control motherboard to be tested; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 3 A magnified view of a section at point B in the middle; Figure 5 yes Figure 2 A structural diagram from another angle; Figure 6 yes Figure 5 A magnified view of a section at point C. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0017] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The use of "belonging" in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this invention.

[0018] An embodiment of the calibration and function verification device for controlling the motherboard according to this utility model is as follows: Figures 1-6 As shown, the device includes a main body 1, which is equipped with anti-slip fixing feet 2 for stable placement. A mounting plate 8 is provided on the main body 1, and multiple spring pins 21 (pogo pins) are fixedly mounted on the mounting plate 8. A limiting plate 9 is elastically positioned vertically above the mounting plate 8 on the main body 1. The limiting plate 9 has a limiting groove 16 for placing the control main board 10 to be tested. A through hole 17 is provided at the bottom of the limiting groove 16 for the upper end of the spring pin 21 to pass through. Multiple guide holes 22 are provided on the mounting plate 8. Guide posts 23 are provided on the limiting plate 9, corresponding one-to-one with each guide hole 22 and cooperating with it for vertical guidance. A compression spring 24 is fitted onto the outer side of the guide post between the mounting plate 8 and the limiting plate 9.

[0019] The device body 1 has a lower pressure plate 11 that moves vertically to press down the limiting plate 9 and the control main board 10 to be tested on it, so that the spring pin 21 passes through the through hole 17 and contacts the corresponding terminal on the control main board to be tested. An insulating pressure post 12 is provided on the lower pressure plate 11 to press down on the control main board to be tested. The device body 1 has a pressing mechanism that drives the lower pressure plate to move up and down. The pressing mechanism uses a push-pull quick clamp 14, the movable end of which is fixedly connected to the lower pressure plate 11. The push-pull quick clamp is existing technology, and its specific structure will not be described in detail in this embodiment. Pulling the push-pull quick clamp 14 downwards can stably connect the control main board to be tested with the spring pin. After testing, pushing the push-pull quick clamp 14 upwards can de-energize the control main board to be tested. The device body 1 has an adjustment groove 18 that extends vertically. The push-pull quick clamp or electric push rod is fixed to the device body through a connecting plate 19. A locking bolt 20 is provided on the connecting plate, and the locking bolt moves vertically through the adjustment groove. This design facilitates the adjustment of the position of the pressing mechanism. Specifically, the device body 1 is equipped with a vertical frame 15, and the adjustment slot and push-pull quick clamp are both located on the vertical frame.

[0020] The device body is equipped with a circuit board connected to the lower end of each spring pin. It also features a communication interface and a power supply 3 connected to the circuit board, powered by an AC plug. The communication interface includes an RS485 interface 4 and a PC485 interface 5, used for connection to a host computer. The device body 1 has a guide rod 13 extending vertically, on which the limiting plate 9 and the lower pressure plate 11 are guided and mounted. The device body 1 also has a voltage detection digital tube 6 and relay status indicator lights 7 connected to the circuit board. The voltage detection digital tube displays the voltage value, and the relay status indicator lights are designated as the first, second, and third indicator lights, corresponding to the three relays on the control main board to be verified.

[0021] Before leaving the factory, the control motherboard to be tested is placed in the limiting slot of the limiting plate. A pressure plate presses down on the control motherboard and the limiting plate, allowing the spring pin to pass through the through hole and make conductive contact with the corresponding terminal on the control motherboard, thus connecting the control motherboard to the circuit board. It is then connected to a host computer via a communication interface. The host computer issues commands to perform a one-click test and verification of the control motherboard, capable of simultaneously calibrating voltage values, relays, and signals from multiple channels on the control motherboard. Voltage verification can be directly displayed on the voltage detection digital tube, relay verification can be displayed via electrical status indicator lights, and the verification of 8 communication signals can be directly displayed on the host computer via the communication interface. Compared to existing technologies, the entire calibration and testing process of this application's device is within 60 seconds.

[0022] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0024] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0025] In other embodiments of this utility model, the pressing mechanism may also be an electric push rod, in which case the movable end of the electric push rod is fixedly connected to the pressing plate; it may also not use mains power, or a storage battery may be installed inside the device body.

Claims

1. A calibration and function verification device for controlling a main board, characterized by: The device includes a main body with a mounting plate and multiple spring pins. A limit plate is elastically positioned vertically above the mounting plate on the main body. The limit plate has a limiting groove for placing the control main board to be tested. A through hole is provided at the bottom of the limiting groove for the upper end of the spring pin to pass through. A lower pressure plate is movably positioned on the main body to press down the limit plate and the control main board to be tested, so that the spring pins pass through the through hole and contact the corresponding terminals on the control main board. The main body also has a circuit board connected to the lower end of each spring pin, a communication interface connected to the circuit board, and a power supply. The communication interface is used to connect to a host computer.

2. The calibration and function verification device for control mainboard according to claim 1, characterized in that: The mounting plate is provided with multiple guide holes, and the limiting plate is provided with guide posts that correspond one-to-one with each guide hole and cooperate with the up and down guide movement. A compression spring is fitted on the outer side of the guide post between the mounting plate and the limiting plate.

3. The calibration and function verification device for control mainboard according to claim 1, characterized in that: The device body is provided with a guide rod whose length is along the vertical direction, and the limiting plate and the lower pressure plate are both guided and moved on the guide rod.

4. The calibration and function verification device for control mainboard according to any one of claims 1-3, characterized in that: The device body is equipped with a pressing mechanism that drives the lower pressure plate to move up and down. The pressing mechanism adopts a push-pull quick clamp or an electric push rod, and the movable end of the push-pull quick clamp or electric push rod is fixedly connected to the lower pressure plate.

5. The calibration and function verification device for control mainboard according to claim 4, characterized in that: The device body is provided with an adjustment groove that extends in the vertical direction. A push-pull quick clamp or electric push rod is fixed to the device body through a connecting plate. The connecting plate is provided with a locking bolt, which moves up and down through the adjustment groove.

6. The calibration and function verification device for a control mainboard according to claim 1, characterized in that: The device body is equipped with a voltage detection digital tube and a relay status detection indicator light connected to the circuit board.

7. The calibration and function verification device for control mainboard according to claim 1, characterized in that: Insulating pressure columns are provided on the lower pressure plate.

8. The calibration and function verification device for control mainboard according to claim 1, characterized in that: The communication interface includes an RS485 interface and / or a PC485 interface.

9. The calibration and function verification device for control mainboard according to claim 1, characterized in that: The device body is equipped with anti-slip fixing feet.

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