Multistage connector state detection system, method and equipment

Abstract

The invention relates to a multistage connector state detection system, method and equipment. The multi-stage connector state detection system provided by the invention comprises a main device and a plurality of cascaded sub-devices. Wherein the main device comprises a processor and a loop detection module connected with the processor, and the loop detection module comprises a plurality of loop detection sub-modules connected with the processor; wherein the sub-device is correspondingly connected with the loop detection sub-module. The main device is configured to provide first level signals for all levels of sub-devices in response to connection between the main device and the first level of sub-devices and connection between all levels of sub-devices through connectors, and receive second level signals fed back by all loop detection sub-modules based on the processor, therefore, the connection states of the connectors between the main device and the first-level sub-device and between the sub-devices at all levels are detected. Through the scheme of the invention, the detection of the connection state of the connector between equipment cascaded through the connector is realized, and the rapid positioning of the connection fault of the connector is realized.

Description

Technical Field

[0001] The present invention relates to the field of connectors, and in particular to a multi-stage connector state detection system, method and device. Background Art

[0002] Electrical connectors are basic electromechanical components for achieving electrical connection and signal transmission between devices. They are widely used in military equipment, aerospace, and rail transit equipment. The connection status is directly related to the parameter control function of the transmitted signal. Therefore, real-time identification of the connection status of the electrical connector and elimination of transmission signal anomalies caused by the connection of the electrical connector are of great significance for precise control.

[0003] At present, the detection of connectors between multi-stage devices is limited to judging whether the connectors are normal by checking whether the pins are loose or falling off before the multi-stage devices are installed in the applied electronic equipment. During the operation of the electronic equipment, it is impossible to detect the connection status of the connectors between the multi-stage devices. Once the signal transmission between the multi-stage devices fails, it is impossible to rule out online whether it is caused by the connector connection, which is not conducive to fault location. Summary of the invention

[0004] In view of this, the present invention proposes a multi-stage connector status detection system, method and device, which realize the detection of the connection status of connectors between multi-stage devices.

[0005] On the one hand, an embodiment of the present invention provides a multi-stage connector state detection system, the multi-stage connector state detection system comprising: A main device, the main device includes a processor and a loop detection module connected to the processor, the loop detection module includes a plurality of loop detection sub-modules, and the plurality of loop detection sub-modules are respectively connected to the processor; A plurality of cascaded sub-devices, each of which is connected to a loop detection sub-module in a one-to-one correspondence; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices of each level through the connector, provide a first level signal to the sub-devices of each level respectively, and receive the second level signal fed back by each loop detection sub-module based on the processor, so as to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices of each level.

[0006] In some embodiments, the processor includes a plurality of digital quantity acquisition channels, and one digital quantity acquisition channel is connected to one loop detection submodule; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices at each level through the connector, provide a first level signal to the sub-devices at each level respectively, and receive the second level signal fed back by the corresponding loop detection sub-module based on several digital quantity acquisition channels of the processor, so as to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level.

[0007] In some embodiments, the master device further includes a first connector disposed at one end of the master device; the first connector includes a first ground pin and a plurality of first feedback pins, the first ground pin is grounded, and the first feedback pin, the loop detection submodule and the digital quantity acquisition channel are connected one-to-one; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices at each level through the connector, provide a first level signal to the sub-devices at each level based on the first ground pin, receive the signal returned by the corresponding sub-device based on each first feedback pin, process the signal returned by the corresponding sub-device based on the loop detection sub-module, and feed it back to the corresponding digital quantity acquisition channel to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level.

[0008] In some embodiments, the loop detection submodule includes: a voltage stabilizing diode, a first resistor, and a second resistor; The positive electrode of the voltage stabilizing diode is grounded, and the negative electrode of the voltage stabilizing diode is respectively connected to the digital quantity acquisition channel pin, the second end of the first resistor, the first end of the second resistor and the first feedback pin; The first end of the first resistor is connected to the power supply, and the second end of the first resistor is respectively connected to the digital quantity acquisition channel pin, the first end of the second resistor and the first feedback pin; The first end of the second resistor is connected to the digital quantity acquisition channel pin and the first feedback pin respectively, and the second end of the second resistor is grounded.

[0009] In some embodiments, the first connector includes a first ground pin and n first feedback pins; Each level of sub-device includes a second connector arranged at a first end of the sub-device and a third connector arranged at a second end of the sub-device; wherein, The second connector of the i-th level sub-device includes a second ground pin and n-i+1 second feedback pins; i∈n; wherein, The second ground pin of the second connector of each level of sub-device is arranged corresponding to the first ground pin; The second feedback pin of the second connector of the first-level sub-device is arranged corresponding to the first feedback pin; In the (i+1)th sub-device, the second ground pin is connected to one of the ni second feedback pins, and the second feedback pin connected to the second ground pin does not correspond to the second feedback pin connected to the second ground pin in the previous i-th sub-device in the position in the respective second connectors; The second ground pin in the second connector of the i+1th level sub-device is connected to the first ground pin through the second ground pin of the previous i-level sub-device, and the second feedback pin connected to the second ground pin in the second connector of the i+1th level sub-device is connected to the corresponding first feedback pin through the third connector and the second connector of the previous i-level sub-device.

[0010] In some implementations, the third connector of the i-th level sub-device includes a third ground pin and ni third feedback pins; wherein, The second ground pin of the second connector, the third ground pin of the third connector and the first ground pin of each level of sub-device are arranged in one-to-one correspondence; The second feedback pin of the second connector of the (i+1)th level sub-device is set correspondingly to the third feedback pin of the third connector of the (i)th level sub-device; In the i-th sub-device, the third feedback pin in the third-stage connector is connected to the second feedback pin in the second connector that is not connected to the second ground pin; The second ground pin in the second connector of the i+1th level sub-device is connected to the first ground pin through the second ground pin of the previous i-level sub-device, and the second feedback pin connected to the second ground pin in the second connector of the i+1th level sub-device is connected to the corresponding first feedback pin through the corresponding third feedback pin in the third connector of the previous i-level sub-device and the corresponding second feedback pin in the second connector.

[0011] On the other hand, an embodiment of the present invention further provides a multi-stage connector state detection method, the multi-stage connector state detection method comprising: Based on the main device, a first level signal is provided to each level of sub-devices respectively, wherein the main device and the first level of sub-devices and the sub-devices at each level are connected through connectors; The processor of the main device receives the second level signal fed back by each loop detection submodule, thereby detecting the connection status of the connector between the main device and the first-level sub-device and between the sub-devices of each level.

[0012] In some embodiments, the first level signal is a ground level signal; based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, the connection state of the connector between the main device and the first-level sub-device and between the sub-devices of each level is detected, including: The processor of the main device receives the second level signal fed back by each loop detection submodule, and in response to the second level signal being a low level signal, determines that the connector connection state between the corresponding sub-device and its previous sub-device or the main device is a normal connection state.

[0013] In some embodiments, the first level signal is a ground level signal; based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, the connection state of the connector between the main device and the first-level sub-device and between the sub-devices of each level is detected, including: Based on the processor of the main device receiving the second level signal fed back by each loop detection sub-module, and in response to the second level signal being a high level signal, it is determined that one or more of the connector connection states between the corresponding-level sub-device and its previous-level sub-device or the main device, between any adjacent sub-devices of the previous level of the corresponding-level sub-device, or between the sub-device of the previous level of the corresponding-level sub-device and the main device are disconnected.

[0014] On the other hand, an embodiment of the present invention further provides an electronic device, comprising the multi-stage connector state detection system as described in any one of the above embodiments.

[0015] The present invention has at least the following beneficial effects: The present invention provides a multi-stage connector state detection system, method and device. The multi-stage connector state detection system, method and device provided by the present invention provide a first level signal to each stage of cascaded sub-devices respectively through a main device, and can transmit the first level signal to each stage of sub-devices, and each stage of sub-devices transmits a corresponding signal to the corresponding loop detection sub-module through an internally connected circuit. After the loop detection sub-module receives the signal transmitted by the corresponding sub-device, it feeds back a second level signal to the processor, so that the processor determines the connector connection state between the corresponding stage sub-device and its previous stage sub-device or the main device based on the second level signal fed back by each loop detection sub-module. In this way, not only the detection of the connector connection state between devices cascaded by the connector is realized, but also when a signal transmission failure occurs between the devices, it can be timely discovered whether it is caused by the connection between the connectors, and then when the signal transmission failure is caused by the connector connection, the position of the device with the connection failure can be quickly located, and the accurate positioning of the device connection failure is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic structural diagram of a multi-stage connector status detection system provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a loop detection submodule provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a multi-stage connector status detection system provided by an embodiment of the present invention; Figure 4 A schematic structural diagram of a multi-stage connector status detection system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0019] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0020] Electrical connectors are basic electromechanical components that realize electrical connection and signal transmission between devices. They are widely used in military equipment, aerospace, and rail transportation equipment. The connection status is directly related to the parameter control function of the transmitted signal. Therefore, real-time identification of the connection status of the electrical connector and elimination of transmission signal anomalies caused by electrical connector connection are of great significance for precise control. In particular, when multiple sub-devices are connected through multi-level connectors, identifying which level of connector connection failure is more conducive to fault location and fault handling.

[0021] A method for detecting the connector status between multi-level devices is to use voltage signal transmission and detect feedback voltage drop. Specifically, the voltage signal is transmitted through each connector, and then the feedback signal voltage value is detected to determine whether a connector is disconnected.

[0022] This method can effectively detect the connection status of connectors between devices for detecting single connection relationships. However, for connectors with multi-level connections, this method can determine the connection status of the connectors, but cannot determine which level of connector has a connection failure. Moreover, when the connection between connectors is long, the voltage drop on the line is large, which may cause the detected voltage value to be inaccurate.

[0023] In view of this, in order to solve at least one of the above technical problems, the present invention provides a multi-stage connector state detection system. The multi-stage connector state detection system, method and device provided by the present invention provide a first level signal to each stage of the cascaded sub-devices through the main device, and can transmit the first level signal to each stage of the sub-devices. The sub-devices at each stage transmit the corresponding signal to the corresponding loop detection sub-module through the internally connected circuit. After the loop detection sub-module receives the signal transmitted by the corresponding sub-device, it feeds back a second level signal to the processor, so that the processor determines the connector connection state between the corresponding sub-device and its previous stage sub-device or the main device based on the second level signal fed back by each loop detection sub-module. In this way, not only the detection of the connector connection state between devices cascaded by the connector is realized, but also when a signal transmission failure occurs between the devices, it can be timely discovered whether it is caused by the connection between the connectors. In addition, when the signal transmission failure is caused by the connector connection, the position of the device with the connection failure can be quickly located, thereby realizing the accurate positioning of the device connection failure.

[0024] The present invention is described in detail below in conjunction with embodiments and drawings.

[0025] A first aspect of an embodiment of the present invention provides a multi-stage connector status detection system. Figure 1 As shown, the multi-stage connector state detection system 10 provided by the embodiment of the present invention comprises: a main device 11 and a plurality of cascaded sub-devices 12. The main device 11 and the first-stage sub-device 12 and the sub-devices 12 at each stage are connected via connectors.

[0026] The main device 11 may include a processor 111 and a loop detection module 112 connected to the processor 111 . The loop detection module 112 includes a plurality of loop detection submodules 1121 . The plurality of loop detection submodules 1121 are respectively connected to the processor 111 .

[0027] Among them, the sub-devices and the loop detection sub-modules are set in a one-to-one correspondence.

[0028] The main device 11 is configured to: in response to the connection between the main device 11 and the first-level sub-device 12 and between the sub-devices 12 at each level through the connector, provide a first level signal to the sub-devices 12 at each level respectively, and receive the second level signal fed back by each loop detection sub-module 1121 based on the processor 111, so as to detect the connector connection status between the main device 11 and the first-level sub-device 12 and between the sub-devices 12 at each level.

[0029] The master device may be a device with digital quantity detection, digital quantity identification and status output, such as a central control unit, a controller, a single-chip microcomputer, etc., but not limited thereto.

[0030] The sub-device can be a module connected to the main device for implementing a certain function, such as an input / output module, a memory, a network card, a temperature detection module, etc., but not limited thereto.

[0031] In a specific implementation, a sub-device directly connected to a main device may be referred to as a first-level sub-device, a device connected to a first-level sub-device via a connector may be referred to as a second-level sub-device, and so on, the Nth cascaded sub-device may be referred to as an N-level sub-device.

[0032] The first level signal may be a low level signal or a ground level signal, which is not specifically limited herein.

[0033] The second level signal may be a high level signal or a low level signal, which is not specifically limited here.

[0034] When the connection between the connectors of the devices is normal, a connection status detection loop is formed between the main device and each level of sub-devices, and the first level signal is input into the connection status detection loop. If the connection status of the connector between the devices is normal, the connection status detection loop will output a low-level signal, and the low-level signal is sent to the processor through the corresponding loop detection submodule, and the processor can determine that the connection status of the corresponding level sub-device and its previous level sub-device is normal according to the low-level signal. If the connection status of the connector between the devices is abnormal (i.e., disconnected), the connection status detection loop cannot output a level signal, and the loop detection submodule will output a high-level signal to the processor, and the processor can determine that the connection status of the corresponding level sub-device and its previous level sub-device is disconnected according to the high-level signal.

[0035] It should be noted that, in the embodiment of the present invention, the devices refer to the devices between the main device and the first-level sub-device, or between sub-devices at various levels.

[0036] In the embodiment of the present invention, the main device provides a first level signal to each level of the cascaded sub-devices respectively, and the first level signal can be transmitted to each level of the sub-devices. The sub-devices at each level transmit corresponding signals to the corresponding loop detection sub-modules through the internally connected circuits. After receiving the signal transmitted by the corresponding sub-device, the loop detection sub-module feeds back a second level signal to the processor, so that the processor determines the connector connection state between the corresponding level sub-device and its previous level sub-device or the main device based on the second level signal fed back by each loop detection sub-module. In this way, not only the detection of the connector connection state between devices cascaded by the connector is realized, but also when a signal transmission failure occurs between the devices, it can be timely discovered whether it is caused by the connection between the connectors. Furthermore, when the signal transmission failure is caused by the connector connection, the position of the device with the connection failure can be quickly located, thereby realizing the accurate positioning of the device connection failure.

[0037] In some embodiments, Figure 1 As shown, the processor 111 provided in the embodiment of the present invention may include a plurality of digital quantity acquisition channels 1111 , wherein one digital quantity acquisition channel 1111 is connected to one loop detection submodule 1121 .

[0038] When the main device 11 and the first-level sub-device 12 and the sub-devices 12 at each level are connected through a connector, the main device 11 can provide first level signals to the sub-devices 12 at each level respectively, and the multiple digital quantity acquisition channels 1111 of the processor 111 respectively receive the second level signals fed back by the corresponding loop detection sub-module 1121, thereby detecting the connector connection status between the main device 11 and the first-level sub-device 12 and the sub-devices 12 at each level.

[0039] In one example, the number of digital quantity acquisition channels may be the same as the number of cascaded sub-devices.

[0040] In one example, the number of digital quantity acquisition channels may be greater than the number of cascaded sub-devices.

[0041] In the embodiment of the present invention, the second level signals fed back by the plurality of loop detection submodules are collected through the plurality of digital quantity collection channels of the processor. Therefore, when a connection failure occurs in a connector between devices, it is possible to determine which level of connector has the connection failure based on the digital quantity collection channel, thereby realizing rapid location of the connection status and facilitating location and processing of the failure.

[0042] In some embodiments, Figure 1 As shown, the master device 11 may further include a first connector 13 disposed at one end of the master device 11; the first connector 13 includes a first ground pin 131 and a plurality of first feedback pins 132. The first ground pin 131 is grounded, and the first feedback pin 132, the loop detection submodule 1121 and the digital quantity acquisition channel 1111 are connected one by one.

[0043] The main device 11 is configured to: in response to the connection between the main device 11 and the first-level sub-device 12 and between the sub-devices 12 at each level through the connector, provide a first level signal to the sub-devices 12 at each level based on the first ground pin 131, receive the signal returned by the corresponding sub-device 12 based on each first feedback pin 132, process the signal returned by the corresponding sub-device 12 based on the loop detection sub-module 1121, and feed it back to the corresponding digital quantity acquisition channel 1111, so as to detect the connection status of the connector between the main device 11 and the first-level sub-device 12 and between the sub-devices 12 at each level.

[0044] By setting the first ground pin of the first connector on the main device, a ground level signal can be provided to each connection status detection loop composed of the main device and each sub-device. By using the first feedback pin of the first connector, the signal returned by the corresponding sub-device through the connection status detection loop can be transmitted to the corresponding digital quantity acquisition channel, thereby realizing the detection of the connection status of the connector between devices. Further, when a connection failure occurs in the connector between the devices, it can be determined according to the digital quantity acquisition channel which level of connector has the connection failure, thereby realizing rapid positioning of the connection status and facilitating the positioning and processing of the failure.

[0045] In some embodiments, Figure 2 As shown, the loop detection submodule 1121 includes: a voltage-stabilizing diode 1122 , a first resistor 1123 , and a second resistor 1124 .

[0046] The positive electrode of the voltage zener diode 1122 is grounded, and the negative electrode of the voltage zener diode 1122 is respectively connected to the digital quantity acquisition channel pin 1111', the second end of the first resistor 1123, the first end of the second resistor 1124, and the first feedback pin 132. The first end of the first resistor 1123 is connected to the power supply Vdd, and the second end of the first resistor 1123 is respectively connected to the digital quantity acquisition channel pin 1111', the first end of the second resistor 1124, and the first feedback pin 132. The first end of the second resistor 1124 is respectively connected to the digital quantity acquisition channel pin 1111' and the first feedback pin 132, and the second end of the second resistor 1124 is grounded.

[0047] Through the above loop detection submodule, when the sub-device at the level corresponding to the loop detection submodule is connected normally with the previous level sub-device of the corresponding level sub-device, a low-level signal can be transmitted to the digital quantity acquisition channel corresponding to the loop detection submodule. When the sub-device at the level corresponding to the loop detection submodule is disconnected from the previous level sub-device of the corresponding level sub-device, a high-level signal can be transmitted to the digital quantity acquisition channel corresponding to the loop detection submodule. The processor can determine which level of connector has a connection failure based on the digital quantity acquisition channel that collects the high-level signal, thereby realizing rapid positioning of the connection state and facilitating the positioning and processing of the fault.

[0048] In some embodiments, Figure 1 As shown, the first connector 13 includes a first ground pin 131 and n first feedback pins 132. Each level of sub-device 12 includes a second connector 121 disposed at the first end of the sub-device 12 and a third connector 122 disposed at the second end of the sub-device. The second connector 121 of the i-th level sub-device includes a second ground pin 1211 and n-i+1 second feedback pins 1212; i∈n.

[0049] The second ground pin 1211 of the second connector 121 of each level of sub-device 12 is arranged correspondingly to the first ground pin 131. The second feedback pin 1212 of the second connector 121 of the first level of sub-device 12 is arranged correspondingly to the first feedback pin 132. In the (i+1)th level of sub-device 12, the second ground pin 1211 is connected to one of the ni second feedback pins 1212, and the second feedback pin connected to the second ground pin 1211 does not correspond to the position of the second feedback pin connected to the second ground pin 1211 in the previous i-level sub-devices in the respective second connectors 121.

[0050] The second ground pin 1211 in the second connector 121 of the i+1-th level sub-device 12 is connected to the first ground pin 131 through the second ground pin 1211 of the previous i-level sub-device 12, and the second feedback pin 1212 connected to the second ground pin 1211 in the second connector 121 of the i+1-th level sub-device 12 is connected to the corresponding first feedback pin 132 through the third connector 122 and the second connector 121 of the previous i-level sub-device.

[0051] The embodiment of the present invention is described by taking the detection of the connection status of the connector between the main device and the first-level sub-device as an example.

[0052] like Figure 1 As shown, when the main device 11 and the first-level sub-device 12 are in a connected state, the first ground pin 131 of the first connector 13 of the main device 11, the second ground pin 1211 connected to the second connector 121 of the first-level sub-device 12, the second feedback pin connected to the second ground pin 1211 of the second connector 121 of the first-level sub-device 12 (for the convenience of distinction, the pin is referred to as 1212_1 here), and the first feedback pin corresponding to the second feedback pin 1212_1 (for the convenience of distinction, the pin is referred to as 132_1 here) form a connection status detection loop.

[0053] When the connector between the main device and the first-level sub-device is normally connected, the ground level of the board in the main device is transmitted back to the digital quantity acquisition channel of the processor through the first ground pin 131, the second ground pin 1211, the second feedback pin 1212_1, and the first feedback pin 132_1 (the digital quantity acquisition channel is referred to as 1111_1 here for the convenience of distinction). At this time, the processor detects that the level signal is low; when the connector between the main device and the first-level sub-device is disconnected, the circuit between the first ground pin 131, the second ground pin 1211, the second feedback pin 1212_1, and the first feedback pin 132_1 that transmits the digital quantity acquisition channel 1111_1 of the processor is disconnected, and the ground level of the board in the main device cannot be transmitted back to the digital quantity acquisition channel 1111_1 of the processor. Then, the corresponding loop detection submodule (the pin is referred to as 1121_1 here for the convenience of distinction) pulls the digital quantity acquisition channel 1111_1 to a high level, and the CPU of the main device detects that the level signal is high. In this way, the connection status between the connectors can be judged by detecting the level.

[0054] In some embodiments, Figure 1 As shown, the third connector 122 of the i-th level sub-device 12 includes a third ground pin 1221 and n i third feedback pins 1222 .

[0055] Among them, the second ground pin 1211 of the second connector 121 of each level of sub-device 12, the third ground pin 1221 of the third connector 122 and the first ground pin 131 are arranged in a one-to-one correspondence. The second feedback pin 1212 of the second connector 121 of the (i+1)-th level sub-device 12 is arranged in correspondence with the third feedback pin 1222 of the third connector 122 of the i-th level sub-device 12. In the i-th level sub-device 12, the third feedback pin 1222 in the third level connector 122 is connected to the second feedback pin 1212 in the second connector 121 that is not connected to the second ground pin 1211.

[0056] The second ground pin 1211 in the second connector 121 of the i+1-th level sub-device 12 is connected to the first ground pin through the second ground pin 1211 of the previous i-level sub-device 12, and the second feedback pin 1212 in the second connector 121 of the i+1-th level sub-device 12, which is connected to the second ground pin 1211, is connected to the corresponding first feedback pin 132 through the corresponding third feedback pin 1222 in the third connector 122 of the previous i-level sub-device 12 and the corresponding second feedback pin 1212 in the second connector 12.

[0057] The multi-stage connector status detection system according to the embodiment of the present invention is described in detail below by using specific examples.

[0058] The multi-stage connector state detection system 10 provided by the embodiment of the present invention comprises: a main device 11 and a plurality of cascaded sub-devices 12. The main device 11 and the first-stage sub-device 12 and the sub-devices 12 at each stage are connected via connectors.

[0059] The main device 11 may include a processor 111 and a loop detection module 112 connected to the processor 111 . The loop detection module 112 includes a plurality of loop detection submodules 1121 . The plurality of loop detection submodules 1121 are respectively connected to the processor 111 .

[0060] like Figure 3 As shown, the multi-level connector state detection system 30 of the embodiment of the present invention may include a main device 31 and n-level sub-devices (in Figure 3 In the figure, N-level sub-devices are represented by 32_1~32_n respectively).

[0061] The main device 31 includes a processor (CPU for short) 311, a loop detection module 312 connected to the processor 311, and a first connector 33 at one end of the main device 31. The processor 311 includes n digital quantity acquisition channels, 1 to n respectively. The first connector 33 includes a first ground pin Pd and n first feedback pins, P1 to Pn respectively. The n digital quantity acquisition channels correspond to the n first feedback pins one by one. In the embodiment of the present invention, the digital quantity acquisition channel 1 corresponds to the first feedback pin P1, the digital quantity acquisition channel 2 corresponds to the first feedback pin P2, ..., and the digital quantity acquisition channel n corresponds to the first feedback pin Pn as an example for description.

[0062] The loop detection module 312 includes n loop detection submodules. The loop detection submodules, the digital quantity acquisition channels and the first feedback pins correspond to each other one by one.

[0063] The loop detection submodule includes: a voltage stabilizing diode, a first resistor and a second resistor.

[0064] Taking the loop detection module corresponding to the first-level sub-device 32_1 as an example, the loop detection module is composed of a first resistor R11, a second resistor R12, a board-level power supply vdd, a board-level ground, a voltage-stabilizing diode ZD1 and a first connector feedback pin P1. The board-level power supply vdd is connected to one end of the first resistor R11, and the other end of the first resistor R11 is connected to the CPU digital quantity acquisition channel 1, one end of the second resistor R12, the cathode of the voltage-stabilizing diode ZD1, and the connector feedback acquisition pin P1, and the other end of the second resistor R12 and the anode of the voltage-stabilizing diode ZD1 are connected to the board ground. The circuit composition and circuit connection method of the remaining loop detection sub-modules are basically the same as those of the loop detection module corresponding to the first-level sub-device, and will not be repeated here.

[0065] Each sub-device of each level includes a second connector 34 disposed at a first end of the sub-device and a third connector 35 disposed at a second end of the sub-device. The second connector 34 of the i-th sub-device includes a second ground pin Pdi and n-i+1 second feedback pins; i∈n, n≥1.

[0066] In the case where the main device 31 is connected to the sub-devices at various levels through connectors, the process of detecting the connection status of the connectors between the main device 31 and the sub-devices at various levels is as follows: For the main device 31 and the first-level sub-device 32_1, the second feedback pin connected to the first feedback pin P1 in the first-level sub-device 32_1 is called P1', and in the first-level sub-device, the second feedback pin P1' and the second ground pin Pd1 are short-circuited to form a detection loop for the connector status. When the connector between the main device and the first-level sub-device is normally connected, the board ground level in the main device is transmitted back to pin 1 of the main device CPU through pins Pd, Pd1, P1', and P1. At this time, the main device CPU detects that the level signal is low; when the connector between the main device and the first-level sub-device is disconnected, the circuit between pins Pd, Pd1, P1', and P1 is disconnected, and the board ground level in the main device cannot be transmitted back to pin 1 of the CPU. Then, the circuit outside pin 1 of the main device CPU pulls the level of CPU pin 1 to a high level, and the main device CPU detects that the level signal is high. The connection status of the external connector is determined by detecting the high and low levels of the levels.

[0067] For the first-level sub-device 32_1 and the second-level sub-device 32_2, the first-level sub-device 32_1 detects the main device board ground signal by pin Pd1 and connects it to the corresponding second ground pin Pd2 of the second-level sub-device 32_2 connected to the first-level sub-device 32_1, and connects the second ground pin Pd2 to a second feedback pin in the second-level sub-device 32_2. The second feedback pin connected to the second ground pin Pd2 is called P2', and pin P2' is fed back to the main device CPU pin 2 through the connector between the second-level sub-device 32_2 and the first-level sub-device 32_1, and the first-level sub-device 32_1 and the main device 32_2. When the connector between the main device 31 and the first-level sub-device 32_1 is connected normally, if the connector between the first-level sub-device 32_1 and the second-level sub-device 32_2 is connected normally, the ground level of the board in the first-level sub-device 32_1 is transmitted back to pin 2 of the main device CPU through pins Pd, Pd1, Pd2, P2', and P2. At this time, the main device CPU detects that the level signal is low; if the connector between the first-level sub-device 32_1 and the second-level sub-device 32_2 is disconnected, when the circuit between pins Pd1, Pd2, P2', and P2 has a connector disconnected, the ground level of the board in the main device cannot be transmitted back to pin 2 of the CPU, then the loop detection submodule 312_2 outside pin 2 of the main device CPU pulls the level of CPU pin 2 to a high level, and the main device CPU detects that the level signal is high, and determines the connection status of the external connector by detecting the high and low levels of the level.

[0068] This process is repeated until the connection status of the connector of the nth-level sub-device and the previous-level sub-device is detected. The connector fault is located by checking the status of the CPU pins 1-n of the main device.

[0069] When the connector between the main device and the first-level sub-device 32_1 is disconnected, the states of the CPU pins 1-n will all be high level; when the connector between the main device and the first-level sub-device 32_1 is connected normally, when the connector between the first-level sub-device 32_1 and the second-level sub-device 32_2 is disconnected, the states of the CPU pins 2-n will all be high level, and so on. When multiple CPU pin detection levels are high, the CPU outputs fault information to the external device.

[0070] The external device can be a local device (such as a computer or display connected to the main device) or a remote device (such as a server or computer connected to the main device via a network), and is not specifically limited here.

[0071] In the fault information, it can be reported that the connector between the sub-device corresponding to the smallest number of pins and its previous sub-device is disconnected. For example, when CPU pins 3, 4, 5...n are all 1, a fault is reported between the second-level and third-level sub-device connectors. Please check. If the CPU pin status is still 1 after checking and installing the connector between the second-level and third-level sub-devices, the sub-device corresponding to the smallest number of pins and its previous sub-device connector disconnection fault will continue to be reported, and so on, until the status of CPU pins 1-n will all be low.

[0072] The above scheme realizes real-time monitoring of the connection status of the connector. For connectors with multi-stage connections, when a connector connection failure occurs, status monitoring can be used to determine which stage of the connector has the connection failure, thereby quickly locating the connection status and facilitating fault location and handling.

[0073] It should be understood that the above examples are intended to explain the embodiments of the present invention and should not be construed as limiting the embodiments of the present invention.

[0074] When there are multiple first-level sub-devices connected to the main device or multiple second-level sub-devices connected to the first-level sub-device, the method of the embodiment of the present invention can still be used to identify the connector connection status; if there are multiple connectors connected between two devices, multiple connectors can be used in a circular routing manner to be connected in series to achieve the monitoring of the connector connection status.

[0075] On the other hand, an embodiment of the present invention further provides a multi-level connector status detection method. When a main device and a first-level sub-device and sub-devices at each level are connected via connectors, such as Figure 4 As shown, the multi-stage connector status detection method provided by the embodiment of the present invention includes steps S411-S412.

[0076] S411 , providing first level signals to sub-devices of each level based on the master device.

[0077] S412: The processor of the main device receives the second level signal fed back by each loop detection submodule, thereby detecting the connection status of the connector between the main device and the first-level sub-device and between the sub-devices of each level.

[0078] In the embodiment of the present invention, the main device provides a first level signal to each level of the cascaded sub-devices respectively, and the first level signal can be transmitted to each level of the sub-devices. The sub-devices at each level transmit corresponding signals to the corresponding loop detection sub-modules through the internally connected circuits. After receiving the signal transmitted by the corresponding sub-device, the loop detection sub-module feeds back a second level signal to the processor, so that the processor determines the connector connection state between the corresponding level sub-device and its previous level sub-device or the main device based on the second level signal fed back by each loop detection sub-module. In this way, not only the detection of the connector connection state between devices cascaded by the connector is realized, but also when a signal transmission failure occurs between the devices, it can be timely discovered whether it is caused by the connection between the connectors. Furthermore, when the signal transmission failure is caused by the connector connection, the position of the device with the connection failure can be quickly located, thereby realizing the accurate positioning of the device connection failure.

[0079] In some implementations, the first level signal is a ground level signal. Figure 4 Step S142 of the illustrated embodiment, based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, thereby detecting the connector connection status between the main device and the first-level sub-device and between each level of sub-device, may include: based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, and in response to the second level signal being a low level signal, determining that the connector connection status between the corresponding level sub-device and its previous level sub-device or the main device is a normal connection status.

[0080] In some implementations, the first level signal is a ground level signal. Figure 4 Step S142 of the illustrated embodiment, based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, thereby detecting the connector connection status between the main device and the first-level sub-device and between the sub-devices of each level, may include: based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, and in response to the second level signal being a high level signal, determining that one or more of the connector connection states between the corresponding-level sub-device and its previous-level sub-device or the main device, between any adjacent sub-devices of the previous level of the corresponding-level sub-device, or between the sub-device of the previous level of the corresponding-level sub-device and the main device is disconnected.

[0081] Based on the same inventive concept, according to another aspect of the present invention, an embodiment of the present invention further provides an electronic device, comprising the multi-stage connector state detection system as described in any one of the above embodiments.

[0082] It will also be appreciated by those skilled in the art that various exemplary logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, a general description has been given to the functions of various schematic components, blocks, modules, circuits and steps. Whether this function is implemented as software or hardware depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the function in various ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the disclosed scope of the embodiments of the present invention.

[0083] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope of the embodiments disclosed in the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0084] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0085] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A multi-stage connector status detection system, characterized in that: include: A main device, the main device comprising a processor and a loop detection module connected to the processor, the loop detection module comprising a plurality of loop detection sub-modules, and the plurality of loop detection sub-modules are respectively connected to the processor; A plurality of cascaded sub-devices, each of which is connected to the loop detection sub-module in a one-to-one correspondence; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices at each level through the connector, provide a first level signal to the sub-devices at each level respectively, and receive the second level signal fed back by each loop detection sub-module based on the processor, so as to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level.

2. The system according to claim 1, characterized in that The processor includes a plurality of digital quantity acquisition channels, and one of the digital quantity acquisition channels is connected to a loop detection submodule; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices at each level through the connector, provide a first level signal to the sub-devices at each level respectively, and receive the second level signal fed back by the corresponding loop detection sub-module based on several digital quantity acquisition channels of the processor, so as to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level.

3. The system according to claim 2, characterized in that The master device further includes a first connector arranged at one end of the master device; the first connector includes a first ground pin and a plurality of first feedback pins, the first ground pin is grounded, and the first feedback pin, the loop detection submodule and the digital quantity acquisition channel are connected one by one; The main device is configured to: in response to the connection between the main device and the first-level sub-device and between the sub-devices at each level through the connector, provide a first level signal to the sub-devices at each level based on the first ground pin, receive a signal returned by the corresponding sub-device based on each first feedback pin, process the signal returned by the corresponding sub-device based on the loop detection sub-module, and feed it back to the corresponding digital quantity acquisition channel to detect the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level.

4. The system according to claim 3, characterized in that The loop detection submodule includes: a voltage stabilizing diode, a first resistor and a second resistor; wherein, The positive electrode of the voltage stabilizing diode is grounded, and the negative electrode of the voltage stabilizing diode is respectively connected to the digital quantity acquisition channel pin, the second end of the first resistor, the first end of the second resistor and the first feedback pin; The first end of the first resistor is connected to a power supply, and the second end of the first resistor is respectively connected to the digital quantity acquisition channel pin, the first end of the second resistor and the first feedback pin; The first end of the second resistor is connected to the digital quantity acquisition channel pin and the first feedback pin respectively, and the second end of the second resistor is grounded.

5. The system according to claim 4, characterized in that The first connector includes a first ground pin and n first feedback pins; Each level of sub-device includes a second connector arranged at a first end of the sub-device and a third connector arranged at a second end of the sub-device; wherein, The second connector of the i-th level sub-device includes a second ground pin and n-i+1 second feedback pins; i∈n; wherein, The second ground pin of the second connector of each level of sub-device is arranged corresponding to the first ground pin; The second feedback pin of the second connector of the first-level sub-device is arranged corresponding to the first feedback pin; In the (i+1)th sub-device, the second ground pin is connected to one of the ni second feedback pins, and the second feedback pin connected to the second ground pin does not correspond to the second feedback pin connected to the second ground pin in the previous i-th sub-device in the position in the respective second connectors; The second ground pin in the second connector of the i+1th level sub-device is connected to the first ground pin through the second ground pin of the previous i-level sub-device, and the second feedback pin connected to the second ground pin in the second connector of the i+1th level sub-device is connected to the corresponding first feedback pin through the third connector and the second connector of the previous i-level sub-device.

6. The system according to claim 5, characterized in that The third connector of the i-th level sub-device includes a third ground pin and ni third feedback pins; wherein, The second ground pin of the second connector, the third ground pin of the third connector and the first ground pin of each level of sub-device are arranged in one-to-one correspondence; The second feedback pin of the second connector of the (i+1)th level sub-device is set correspondingly to the third feedback pin of the third connector of the (i)th level sub-device; In the i-th sub-device, the third feedback pin in the third-stage connector is connected to the second feedback pin in the second connector that is not connected to the second ground pin; The second ground pin in the second connector of the i+1th level sub-device is connected to the first ground pin through the second ground pin of the previous i-level sub-device, and the second feedback pin connected to the second ground pin in the second connector of the i+1th level sub-device is connected to the corresponding first feedback pin through the corresponding third feedback pin in the third connector of the previous i-level sub-device and the corresponding second feedback pin in the second connector.

7. A multi-stage connector status detection method, characterized in that: The method comprises: Based on the main device, a first level signal is provided to each level of sub-devices respectively, wherein the main device and the first level of sub-devices and the sub-devices at each level are connected through connectors; The processor of the main device receives the second level signal fed back by each loop detection submodule, thereby detecting the connection status of the connector between the main device and the first-level sub-device and between the sub-devices of each level.

8. The method according to claim 7, characterized in that The first level signal is a ground level signal; The processor based on the main device receives the second level signal fed back by each loop detection submodule, thereby detecting the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level, including: Based on the processor of the main device receiving the second level signal fed back by each loop detection submodule, and in response to the second level signal being a low level signal, it is determined that the connector connection state between the corresponding level sub-device and its previous level sub-device or the main device is a normal connection state.

9. The method according to claim 7, characterized in that: The first level signal is a ground level signal; The processor based on the main device receives the second level signal fed back by each loop detection submodule, thereby detecting the connection status of the connector between the main device and the first-level sub-device and between the sub-devices at each level, including: Based on the processor of the main device receiving the second level signal fed back by each loop detection sub-module, and in response to the second level signal being a high level signal, it is determined that one or more of the connector connection states between the corresponding-level sub-device and its previous-level sub-device or the main device, between any adjacent sub-devices of the previous level of the corresponding-level sub-device, or between the sub-device of the previous level of the corresponding-level sub-device and the main device are disconnected.

10. An electronic device, characterized in that: It comprises a multi-stage connector status detection system as described in any one of claims 1 to 6.

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