Riser card connector detection fixture and detection method

Abstract

The present invention provides a riser card connector detection jig, wherein the first part of the detection jig includes a plurality of first branches, the first branch includes a power supply and a jig slot hole; a first switch is provided between the power supply of the spaced first branch and the jig slot hole; the jig slot hole corresponds to the position of a metal connection point; the second part of the detection jig includes a plurality of second branches, the second branch includes a jig connection point and an indicator light, a second switch is provided between the jig connection point and the indicator light of the spaced second branch; the jig connection point corresponds to the position of a slot slot hole; the metal connection point corresponding to the first branch provided with the first switch is connected to the slot slot hole corresponding to the second branch not provided with the second switch; the metal connection point corresponding to the first branch not provided with the first switch is connected to the slot slot hole corresponding to the second branch provided with the second switch. The present invention solves the technical problems of poor detection accuracy and low efficiency of riser card connectors, and efficiently and reliably realizes the open circuit and short circuit detection of riser card connectors.

Description

Technical Field

[0001] The present application relates to the field of detection, and in particular to a riser card connector detection fixture and a detection method. Background Art

[0002] Riser card is one of the key components for connecting multiple PCBs or expanding PCBs. Riser connectors include closely arranged metal connection points (gold fingers). When metal connection points on the riser connector are short-circuited or open-circuited, due to their large number and dense distribution, the detection accuracy and efficiency of traditional detection methods such as multimeters are low. Summary of the invention

[0003] In view of this, in order to solve the technical problems of poor detection accuracy and low efficiency of riser card connectors in the prior art, the first aspect of the present invention provides a riser card connector detection fixture, wherein the riser card comprises a riser card connector, and a riser card slot located in a direction opposite to the riser card connector; the riser card connector comprises a plurality of metal connection points, and the riser card slot comprises a plurality of slot holes;

[0004] The riser card connector detection fixture comprises:

[0005] Testing fixture part 1 and testing fixture part 2;

[0006] The first part of the detection fixture includes a plurality of first branches, each of which includes a power source and a fixture slot hole; a first switch is provided between the power source and the fixture slot hole of each interval of the first branch;

[0007] The fixture slot hole is located in the fixture slot of the first part of the detection fixture, and the fixture slot hole corresponds to the position of the metal connection point; the power supply is used to supply power to the riser card through the fixture slot;

[0008] The second part of the detection fixture includes a plurality of second branches, each of which includes a fixture connection point and an indicator light, and a second switch is provided between the fixture connection point and the indicator light of each interval of the second branch;

[0009] The fixture connection point is located on the fixture connection piece of the second part of the detection fixture, and the fixture connection point corresponds to the position of the slot hole; the indicator light is used to indicate whether the riser card has a short circuit or a break circuit;

[0010] The metal connection point corresponding to the first branch with the first switch is connected to the slot hole corresponding to the second branch without the second switch; the metal connection point corresponding to the first branch without the first switch is connected to the slot hole corresponding to the second branch with the second switch.

[0011] In some embodiments, the first branch without a first switch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch without a switch adjacent to the slot hole constitute a loop for detecting a short circuit of the riser card connector;

[0012] The first branch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch connected to the slot hole constitute a circuit for detecting the disconnection of the riser card connector.

[0013] In some embodiments, the first branch having the first switch further includes a plurality of first switch indicator lights, wherein the first switch indicator lights are used to indicate whether the first switch is closed or open;

[0014] The second branch provided with the second switch also includes a plurality of second switch indicator lights, and the second switch indicator lights are used to display whether the second switch is closed or open.

[0015] In some embodiments, the first branch having the first switch includes a first switch branch and a first auxiliary branch;

[0016] The first switch branch includes a first pull-up resistor, a first switch and a first switch indicator light;

[0017] The first auxiliary branch includes a second pull-up resistor and a first field effect transistor; the first auxiliary branch is used to make the closed state or open state of the first switch in the switch branch correspond to the on or off state of the first switch indicator light;

[0018] The first end of the first switch and the first end of the first switch indicator light are connected to the power supply through a first pull-up resistor; the drain of the first field effect transistor is connected to the first power supply through a second pull-up resistor;

[0019] The second end of the first switch and the drain of the first field effect transistor are connected to the metal connection point on the riser card connector, and the second end of the first switch indicator light is connected to the gate of the first field effect transistor.

[0020] In some embodiments, the first branch without the first switch includes: a third pull-up resistor, a first end of the third pull-up resistor is connected to the power supply; and a second end of the first pull-up resistor is connected to the metal connection point on the riser card connector.

[0021] In some embodiments, the second branch having the second switch includes a second switch branch and a second auxiliary branch;

[0022] The second switch branch includes a second switch and a second switch indicator light;

[0023] The second auxiliary branch includes a fourth pull-up resistor and a second field effect transistor; the second auxiliary branch is used to make the closed state or open state of the second switch in the switch branch correspond to the on or off state of the second switch indicator light;

[0024] The first end of the second switch and the first end of the second switch indicator light are connected to the slot hole on the riser card connector; the drain of the second field effect transistor is connected to the second power supply through a fourth pull-up resistor;

[0025] The second end of the second switch and the gate of the second field effect transistor are connected to the first indicator light, and the second end of the first switch indicator light is connected to the drain of the second field effect transistor.

[0026] In some embodiments, the second branch without the second switch includes a second indicator light; a first end of the second indicator light is connected to the slot hole on the riser card connector, and a second end of the second indicator light is grounded.

[0027] A second aspect of the present invention provides a riser card connector detection method, using the riser card connector detection fixture, comprising:

[0028] Inserting the riser card connector into the first part of the detection jig so that the riser card connector is connected to the first part of the detection jig; inserting the second part of the detection jig into the riser card slot so that the riser card slot is connected to the second part of the detection jig;

[0029] Turn off all switches on the riser card detection fixture. If no indicator light is on on the riser card connector detection fixture, there is no short circuit in the riser card connector; otherwise, there is a short circuit at the metal connection point corresponding to the circuit with the indicator light on.

[0030] If there is no short circuit in the riser card connector, close all switches on the riser card detection fixture. If all indicator lights of the riser card connector detection fixture are on, there is no open circuit in the riser card connector; otherwise, there is an open circuit at the metal connection point corresponding to the circuit where the indicator light is not on.

[0031] In some embodiments, before determining that the riser card connector does not have a short circuit, all switches on the riser card detection fixture are not closed to detect whether the riser card connector has a break circuit.

[0032] In some embodiments, if a short circuit exists at a metal connection point corresponding to the circuit with the indicator light on, the metal connection point corresponding to the circuit with the indicator light on and metal connection points adjacent to the metal connection point corresponding to the circuit with the indicator light on are detected to see whether a short circuit exists.

[0033] The present invention forms a detection loop by arranging a first detection jig part and a second detection jig part respectively corresponding to a riser card connector and a riser card slot, and performs a rapid and accurate short circuit and open circuit detection on the riser card. By turning off the switches on the first detection jig part and the second detection jig part, adjacent metal connection points on the riser card connector form a differential pair to be tested that can detect an open circuit or a short circuit, and all metal connection points on the riser card connector can be tested for an open circuit or a short circuit in batches, and displayed by an indicator light corresponding to each metal connection point, with good detection accuracy and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A side view of a riser card exemplarily provided by the present invention;

[0035] Figure 2 A side view of a first part of a riser card connector detection fixture exemplarily provided by the present invention;

[0036] Figure 3 A top view of a second part of a riser card connector detection fixture exemplarily provided by the present invention;

[0037] Figure 4 A schematic diagram of a first part of a riser card connector detection fixture exemplarily provided by the present invention;

[0038] Figure 5 A schematic diagram of a second part of a riser card connector detection fixture exemplarily provided by the present invention;

[0039] Figure 6 A circuit diagram of a riser card connector detection fixture provided by the present invention;

[0040] Figure 7 The present invention is a flowchart of a riser card connector detection method exemplarily provided by the present invention. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0043] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0044] With the development of information technology, consumer electronic products emerge in an endless stream, which also promotes the growth of physical electronic plug-ins. The use of riser card adapters is a key means to match the chassis structure or match multiple cards, allowing users to add and expand hardware functions according to their actual needs to achieve the purpose of meeting user needs. The metal sheet (gold finger) on the riser card connector is a common component for connecting various physical electronic plug-ins to terminal hardware. The gold-plated layer on the surface provides excellent oxidation resistance and high corrosion resistance, and has good conductivity, resulting in no loss of electronic signals in data transmission, and has always been widely favored by the industry.

[0045] Normally, when gold plating, the gold-plated leads need to be connected from the outside of the PCB to the metal sheet on the riser card connector, and the metal sheet on the riser card connector needs to be energized to complete the gold plating. The gold-plated leads are used to assist in gold plating, and the metal sheet needs to be CNC-cut or beveled to facilitate the subsequent assembly and use of the metal sheet. During the CNC-cut and beveled process, some of the gold-plated leads will be pulled off by the CNC milling cutter and bevel cutter, and then overlap with the adjacent gold-plated leads, causing a short circuit in the metal sheet. This problem can cause a yield problem in the process, or even cause serious electrical failures when the product is connected to the terminal.

[0046] In addition, when users plug in or unplug the metal sheet on the riser card connector, they may cause a circuit break or short circuit due to negligence. For example, during the installation process, the metal sheet 12V (pin 1) and the ground wire (pin 2) on the riser card connector are adjacent to each other, causing a power short circuit, which directly burns the PCB circuit board. Since the burning of the metal sheet on the riser card connector does not have obvious appearance manifestations like the explosion of the motherboard or the burning of the GPU, video memory, etc., it usually only leaves a small trace on the PCB circuit board, which is difficult for users to find.

[0047] In addition, when graphics cards or other devices that use riser card connectors have been used for a period of time, aging and short circuits of components can also cause overcurrent. Irregular or non-standard workmanship, and looseness caused by the transportation process of the host using the riser card can all cause poor contact or misalignment between the riser card connector and the slot.

[0048] When the metal sheets on the riser connector are short-circuited or open-circuited, due to their large number and dense distribution, traditional detection methods such as multimeters have low detection accuracy and poor efficiency, making measurement and troubleshooting difficult.

[0049] In view of this, the present invention provides a riser card connector detection fixture and a detection method.

[0050] Figure 1 The figure is a side view of a riser card exemplarily provided by the present invention.

[0051] Figure 2 The present invention is exemplarily provided as a side view of a first part of a riser card connector detection fixture.

[0052] Figure 3 The present invention is exemplarily provided in a top view of the second part of a riser card connector detection fixture.

[0053] Please refer to Figure 1 A riser card 100 includes a riser card connector 101, and a riser card slot 102 located in a direction opposite to the riser card connector 101; the riser card connector 101 includes a plurality of metal connection points 1011, and the riser card slot 102 includes a plurality of slot holes.

[0054] The plurality of metal connection points 1011 are also called gold fingers in the riser card, which are a series of golden metal contact points or conductive sheets on the electronic components. They are made of metal and are often coated with gold or other highly conductive materials to enhance their conductivity and resist oxidation. The gold fingers contact the contact points in the slot to achieve the transmission of electrical signals.

[0055] Please refer to Figure 2 and Figure 3 The riser card connector detection fixture includes a first detection fixture part 210 and a second detection fixture part 220.

[0056] The first part 210 of the detection jig is a structure with a slot that can be inserted into the riser card connector 101 of the riser card 100, and the second part 220 of the detection jig is an insertion portion including a protrusion and a main body structure.

[0057] The first part 210 of the detection jig includes a plurality of first branches, each of which includes a power supply 211 and a jig slot hole; a first switch is provided between the power supply 211 and the jig slot hole of each interval of the first branch. The jig slot hole is located in the jig slot 212 of the first part 210 of the detection jig, and the jig slot hole corresponds to the position of the metal connection point 1011; the power supply 211 is used to supply power to the riser card 100 through the jig slot 212.

[0058] For example, the power supply 211 can be a 5V input of a USB. The power supply 211 is connected to the riser card connector 101 of the riser card 100 through a resistor, so that a potential difference is formed at both ends of the riser: the riser card connector 101 side is high potential, and the riser card slot 102 side is low potential.

[0059] The riser card connector detection fixture provided in this embodiment is simple and fast to operate. When detecting the riser card, it is only necessary to power the detection fixture through a USB cable, and the riser cards to be tested are respectively inserted into the fixture to detect the short circuit and open circuit conditions of the riser card connector.

[0060] The second part 220 of the detection jig includes a plurality of second branches, each of which includes a jig connection point 221 and an indicator light 222. A second switch is provided between the jig connection point 221 and the indicator light 222 of each interval of the second branch. The jig connection point 222 is located on the jig connection piece of the second part of the detection jig, and the jig connection point 221 corresponds to the position of the slot hole; the indicator light 222 is used to indicate whether the riser card 100 has a short circuit or a break circuit.

[0061] It is understandable that the indicator light 222 can be a light emitting diode. A light emitting diode is set on the connection formed by each metal connection point 1011 and the slot hole on the riser card 100, so that when a metal connection point 1011 is short-circuited or open-circuited, the lighted light emitting diode can be used to identify which metal connection point 1011 is faulty.

[0062] In this embodiment, a detection circuit is formed by setting a first detection fixture part and a second detection fixture part corresponding to the riser card connector and the riser card slot respectively, so as to quickly and accurately detect short circuit and open circuit of the riser card. By turning off the switches on the first detection fixture part and the second detection fixture part, adjacent metal connection points on the riser card connector form a differential pair to be tested that can detect open circuit or short circuit, and all metal connection points on the riser card connector can be tested for open circuit or short circuit in batches, and displayed by the indicator light corresponding to each metal connection point, with good detection accuracy and high efficiency.

[0063] The metal connection point 1011 corresponding to the first branch with the first switch is connected to the slot hole corresponding to the second branch without the second switch; the metal connection point 1011 corresponding to the first branch without the first switch is connected to the slot hole corresponding to the second branch with the second switch.

[0064] Figure 4 A schematic diagram of a first part of a riser card connector detection fixture exemplarily provided by the present invention; Figure 5 The present invention is a schematic diagram of a second part of a riser card connector detection fixture provided by way of example.

[0065] The first branch without a first switch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch without a switch adjacent to the slot hole constitute a loop for detecting a short circuit of the riser card connector.

[0066] For details, please refer to Figure 4 When all the first switches and all the second switches are disconnected, the first branch and the second branch corresponding to the matching metal connection points and the slot holes respectively cannot be conducted, so that the first branch without a switch and the adjacent second branch without a switch form a loop. If there is a short circuit between the metal connection point corresponding to the adjacent first branch forming the loop and another metal connection point matching the slot hole corresponding to the second branch forming the loop, the first branch without a switch and the adjacent second branch without a switch form a loop and conduct, and the indicator light turns on.

[0067] It can be understood that the input of the power supply is connected to the riser card through a resistor.

[0068] The riser card connector detection fixture provided in this embodiment has a wide detection range. It can not only detect the short circuit between the metal connection point of the riser card connector detection fixture and the ground, but also the design of adjacent switches supports the short circuit between two adjacent pins of the metal connection point.

[0069] The first branch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch connected to the slot hole constitute a circuit for detecting the disconnection of the riser card connector.

[0070] For details, please refer to Figure 5 When all the first switches and all the second switches are closed, the first branch and the second branch corresponding to the matching metal connection points and the slots are connected to form a circuit. If the indicator lights corresponding to each metal connection point are all on, it means that there is no problem with the connection of the first branch corresponding to each metal connection point and the second branch corresponding to the slot matched by each metal connection point, and there is no open circuit.

[0071] In some embodiments, the first branch having the first switch further includes a plurality of first switch indicator lights, which are used to indicate whether the first switch is closed or disconnected, and the second branch having the second switch further includes a plurality of second switch indicator lights, which are used to indicate whether the second switch is closed or disconnected. The provision of the first switch indicator lights and the second switch indicator lights avoids the riser card connector detection fixture from misdetecting the riser card connector due to abnormal operation of the switch of the fixture itself.

[0072] Figure 6 A circuit diagram of a riser card connector detection fixture provided exemplarily in the present invention.

[0073] Please refer to Figure 6 The first branch with the first switch includes a first switch branch and a first auxiliary branch. The first switch branch is used to control the opening and closing of the first branch, and the first auxiliary branch is used to cooperate with the first switch branch and control whether the first switch indicator light is on. Specifically, when the first switch is in the closed state, the first switch indicator light is on, and when the first switch is in the open state, the first switch indicator light is off.

[0074] The first switch branch includes a first pull-up resistor, a first switch and a first switch indicator light. The first auxiliary branch includes a second pull-up resistor and a first field effect transistor. The first auxiliary branch is used to make the closed state or open state of the first switch in the switch branch correspond to the on or off state of the first switch indicator light. The first end of the first switch and the first end of the first switch indicator light are connected to the power supply through the first pull-up resistor. The drain of the first field effect transistor is connected to the first power supply through the second pull-up resistor. The second end of the first switch and the drain of the first field effect transistor are connected to the metal connection point on the riser card connector, and the second end of the first switch indicator light is connected to the gate of the first field effect transistor.

[0075] The first branch without the first switch comprises: a third pull-up resistor, a first end of the third pull-up resistor is connected to the power supply; and a second end of the first pull-up resistor is connected to the metal connection point on the riser card connector.

[0076] The second branch with the second switch includes a second switch branch and a second auxiliary branch. The second switch branch is used to control the opening and closing of the second branch, and the second auxiliary branch is used to cooperate with the second switch branch and control whether the second switch indicator light is on. Specifically, when the second switch is in the closed state, the second switch indicator light is on, and when the second switch is in the open state, the second switch indicator light is off.

[0077] The second switch branch includes a second switch and a second switch indicator light. The second auxiliary branch includes a fourth pull-up resistor and a second field effect transistor. The second auxiliary branch is used to make the closed state or open state of the second switch in the switch branch correspond to the on or off state of the second switch indicator light. The first end of the second switch and the first end of the second switch indicator light are connected to the slot slot on the riser card connector. The drain of the second field effect transistor is connected to the second power supply through the fourth pull-up resistor. The second end of the second switch is connected to the first indicator light and the gate of the field effect transistor, and the second end of the second switch indicator light is connected to the drain of the second field effect transistor.

[0078] The second branch without the second switch includes a second indicator light; a first end of the second indicator light is connected to the slot hole on the riser card connector, and a second end of the second indicator light is grounded.

[0079] The riser card connector detection fixture provided in this embodiment is easy to observe. The riser card connector detection fixture is provided with an indicator light for each signal pin (metal connection point). The short circuit or open circuit condition of the riser card connector can be known by simply observing the on and off condition of the indicator light.

[0080] The riser card connector detection fixture provided in this embodiment has good scalability and high reliability, supports X16 riser cards, and is also compatible with X1, X4, and X8 riser card detection.

[0081] The above is a description of a riser card connector detection fixture provided by the present invention. The following is a specific introduction to the detection method corresponding to the riser card connector detection fixture provided by the present invention.

[0082] Figure 7 The present invention is a flowchart of a riser card connector detection method exemplarily provided by the present invention.

[0083] Please refer to Figure 7A riser card connector detection method is provided, using the riser card connector detection fixture provided by any of the above embodiments, and the detection method comprises:

[0084] S701, inserting the riser card connector into the first part of the detection fixture so that the riser card connector is connected to the first part of the detection fixture; inserting the second part of the detection fixture into the riser card slot so that the riser card slot is connected to the second part of the detection fixture.

[0085] At this time, a potential difference is formed at both ends of the riser card, and the riser card connector is powered by the first part of the detection fixture, so that the riser card connector is at a high potential and the riser card slot is at a low potential.

[0086] S702, turning off all switches on the riser card detection fixture. If no indicator light is on on the riser card connector detection fixture, there is no short circuit in the riser card connector; otherwise, there is a short circuit at the metal connection point corresponding to the circuit with the indicator light on.

[0087] When all switches on the riser card detection fixture are disconnected, the first branch and the second branch corresponding to the matching metal connection points and the slot holes respectively cannot be turned on, so that the first branch without a switch and the adjacent second branch without a switch form a loop. If there is a short circuit between the metal connection point corresponding to the adjacent first branch forming the loop and another metal connection point matching the slot hole corresponding to the second branch forming the loop, the first branch without a switch and the adjacent second branch without a switch form a loop and conduct, and the indicator light turns on.

[0088] S703, if there is no short circuit in the riser card connector, close all switches on the riser card detection fixture, and if all indicator lights of the riser card connector detection fixture are on, there is no open circuit in the riser card connector; otherwise, there is an open circuit at the metal connection point corresponding to the circuit where the indicator light is not on.

[0089] When all the first switches and all the second switches are closed, the first branch and the second branch corresponding to the matching metal connection points and the slot holes are connected to form a loop. If the indicator lights corresponding to each metal connection point are all on, it means that there is no problem with the connection of the first branch corresponding to each metal connection point and the second branch corresponding to the slot hole matched by each metal connection point, and there is no open circuit.

[0090] It is worth noting that, before judging that the riser card connector does not have a short circuit, all switches on the riser card detection fixture are not closed to detect whether the riser card connector has a circuit break. That is, the riser card connector detection method provided in this embodiment must be performed in the order of first detecting a short circuit and then detecting a circuit break, and first opening the switch and then closing it. When the riser card connector does not have a short circuit, the circuit break detection is performed to avoid the light being on in the case of a short circuit affecting the judgment of the circuit break.

[0091] In some embodiments, if a short circuit exists at a metal connection point corresponding to the circuit with the indicator light on, the metal connection point corresponding to the circuit with the indicator light on and metal connection points adjacent to the metal connection point corresponding to the circuit with the indicator light on are detected to see whether a short circuit exists.

[0092] In this embodiment, by sequentially setting the switches on the first part of the detection fixture and the second part of the detection fixture to be turned off, adjacent metal connection points on the riser card connector constitute a differential pair to be tested that can detect open circuit or short circuit. All metal connection points on the riser card connector can be tested for open circuit or short circuit in batches, and the test can be displayed through the indicator light corresponding to each metal connection point, with good detection accuracy and high efficiency.

[0093] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A riser card connector detection fixture, the riser card comprising a riser card connector and a riser card slot located opposite to the riser card connector; the riser card connector comprises a plurality of metal connection points, and the riser card slot comprises a plurality of slot holes; It is characterized in that The riser card connector detection fixture comprises: Testing fixture part 1 and testing fixture part 2; The first part of the detection fixture includes a plurality of first branches, each of which includes a power source and a fixture slot hole; a first switch is provided between the power source and the fixture slot hole of each interval of the first branch; The fixture slot hole is located in the fixture slot of the first part of the detection fixture, and the fixture slot hole corresponds to the position of the metal connection point; the power supply is used to supply power to the riser card through the fixture slot; The second part of the detection fixture includes a plurality of second branches, each of which includes a fixture connection point and an indicator light, and a second switch is provided between the fixture connection point and the indicator light of each interval of the second branch; The fixture connection point is located on the fixture connection piece of the second part of the detection fixture, and the fixture connection point corresponds to the position of the slot hole; the indicator light is used to indicate whether the riser card has a short circuit or a break circuit; The metal connection point corresponding to the first branch with the first switch is connected to the slot hole corresponding to the second branch without the second switch; the metal connection point corresponding to the first branch without the first switch is connected to the slot hole corresponding to the second branch with the second switch; When the riser card connector detection fixture is used for detection, the detection must be carried out in the order of first detecting the short circuit and then detecting the open circuit, and first opening the switch and then closing it; When all switches on the riser card detection fixture are disconnected, the first branch and the second branch corresponding to the matching metal connection points and the slot holes respectively cannot be turned on, so that the first branch without a switch and the adjacent second branch without a switch form a loop; if there is a short circuit between the metal connection point corresponding to the adjacent first branch forming the loop and another metal connection point matching the slot hole corresponding to the second branch forming the loop, the first branch without a switch and the adjacent second branch without a switch form a loop and are turned on, and the indicator light is on; When all the first switches and all the second switches are closed, the first branch and the second branch corresponding to the matching metal connection points and the slot holes are connected to form a loop; if the indicator lights corresponding to each metal connection point are on, it means that there is no problem in the connection between the first branch corresponding to each metal connection point and the second branch corresponding to the slot hole matched by each metal connection point, and there is no short circuit.

2. The riser card connector detection fixture according to claim 1, characterized in that: The first branch without the first switch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch without the switch adjacent to the slot hole constitute a loop for detecting a short circuit of the riser card connector; The first branch, the metal connection point connected to the first branch, the slot hole corresponding to the metal connection point, and the second branch connected to the slot hole constitute a circuit for detecting the disconnection of the riser card connector.

3. The riser card connector detection fixture according to claim 1, characterized in that: The first branch provided with the first switch also includes a plurality of first switch indicator lights, wherein the first switch indicator lights are used to indicate whether the first switch is closed or open; The second branch provided with the second switch also includes a plurality of second switch indicator lights, and the second switch indicator lights are used to display whether the second switch is closed or open.

4. The riser card connector detection fixture according to claim 3, characterized in that: The first branch provided with the first switch includes a first switch branch and a first auxiliary branch; The first switch branch includes a first pull-up resistor, a first switch and a first switch indicator light; The first auxiliary branch includes a second pull-up resistor and a first field effect transistor; the first auxiliary branch is used to make the closed state or open state of the first switch in the switch branch correspond to the on or off state of the first switch indicator light; The first end of the first switch and the first end of the first switch indicator light are connected to the power supply through a first pull-up resistor; the drain of the first field effect transistor is connected to the first power supply through a second pull-up resistor; The second end of the first switch and the drain of the first field effect transistor are connected to the metal connection point on the riser card connector, and the second end of the first switch indicator light is connected to the gate of the first field effect transistor.

5. The riser card connector detection jig according to claim 1, characterized in that: The first branch without the first switch comprises: a third pull-up resistor, a first end of the third pull-up resistor is connected to the power supply; and a second end of the first pull-up resistor is connected to the metal connection point on the riser card connector.

6. The riser card connector detection jig according to claim 3, characterized in that: The second branch with a second switch includes a second switch branch and a second auxiliary branch; The second switch branch includes a second switch and a second switch indicator light; The second auxiliary branch includes a fourth pull-up resistor and a second field effect transistor; the second auxiliary branch is used to make the closed state or open state of the second switch in the switch branch correspond to the on or off state of the second switch indicator light; The first end of the second switch and the first end of the second switch indicator light are connected to the slot hole on the riser card connector; the drain of the second field effect transistor is connected to the second power supply through a fourth pull-up resistor; The second end of the second switch and the gate of the second field effect transistor are connected to the first indicator light, and the second end of the first switch indicator light is connected to the drain of the second field effect transistor.

7. The riser card connector detection fixture according to claim 1, characterized in that: The second branch without the second switch includes a second indicator light; a first end of the second indicator light is connected to the slot hole on the riser card connector, and a second end of the second indicator light is grounded.

8. A method for detecting a riser card connector, using the riser card connector detection fixture as claimed in any one of claims 1 to 7, characterized in that: include: Inserting the riser card connector into the first part of the detection jig so that the riser card connector is connected to the first part of the detection jig; inserting the second part of the detection jig into the riser card slot so that the riser card slot is connected to the second part of the detection jig; Turn off all switches on the riser card detection fixture. If no indicator light is on on the riser card connector detection fixture, there is no short circuit in the riser card connector; otherwise, there is a short circuit at the metal connection point corresponding to the circuit with the indicator light on. If there is no short circuit in the riser card connector, close all switches on the riser card detection fixture, and if all indicator lights of the riser card connector detection fixture are on, there is no open circuit in the riser card connector; otherwise, there is an open circuit at the metal connection point corresponding to the circuit where the indicator light is not on; The riser card connector detection method must be performed in the order of first detecting the short circuit and then detecting the open circuit, and first opening the switch and then closing it.

9. The riser card connector detection method according to claim 8, characterized in that: Before determining that the riser card connector does not have a short circuit, all switches on the riser card detection fixture are not closed to detect whether the riser card connector has a circuit break.

10. The riser card connector detection method according to claim 8, characterized in that: If a short circuit exists at a metal connection point corresponding to the circuit with the indicator light on, detect whether a short circuit exists at the metal connection point corresponding to the circuit with the indicator light on and metal connection points adjacent to the metal connection point corresponding to the circuit with the indicator light on.

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