Board, chassis, board communication system and board in-place detection method

Abstract

The present invention belongs to the technical field of board-card communication. In order to solve the technical problem that the existing technical solution for board-card in-place detection cannot detect whether a board-card corresponding to a multi-row pin connector is reliably connected at a low cost, the present invention provides a board-card, a chassis, a board-card communication system and a board-card in-place detection method. The board-card comprises a first connector, the first connector comprises at least two detected pins which are connected in series and are used to detect whether the board-card is in place. Only when the board-card is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins in the chassis backplane, so that a detection branch circuit formed by the detection pin and the detected pin is formed between the detection pin and the detected pin, and the detection branch circuit comprises at least three pairs of coupling pins.

Description

Technical Field

[0001] The present invention relates to the technical field of board-card communication, and in particular to the technical field of board-card in-place detection, and more specifically to a board-card, a chassis, a board-card communication system and a board-card in-place detection method applied in a DCS system. Background Art

[0002] In the control system, communication between boards usually adopts a plug-in card structure, which is usually composed of a backplane (or chassis) and a data board. The connection between the data board and the backplane is achieved through the connection between the connector on the data board and the connector on the backplane. Because it is necessary to support hot plugging, some important boards must detect whether there is a reliable connection between themselves and the connector of the board when they are powered on (that is, detect the in-place signal) to determine the processing with the backplane connector (interface signal). If the board cannot reliably detect the in-place signal, it may output an erroneous signal to the backplane when it is hot plugged, interfering with the normal operation of the system.

[0003] For example, Chinese patent application number CN02117589.6 discloses a method for detecting board presence. The technical solution sets two groups of board presence signals on the board and the backplane respectively. If the levels of the two groups of board presence small signals are consistent and the same as the set level values, it is judged that the board and the backplane are reliably connected and the board is in place; otherwise, it is judged that the board is out of place.

[0004] In the process of implementing the present invention, the inventors found that although the above-mentioned prior art can improve the reliability of the system and reduce the process requirements for the backplane, it also has some shortcomings. For example, the above-mentioned in-situ detection method only detects two-pin connector pins. For multi-row pin connectors, if two pins are in the same row (column), it can only guarantee that the pins in this row (column) can be reliably inserted, that is, it can only guarantee that one line can be reliably inserted, and it cannot guarantee that the entire plane of the connector is reliably connected. Summary of the invention

[0005] In order to solve the technical problem that the existing technical solutions for board in-place detection cannot detect at low cost whether the boards corresponding to multi-row pin connectors are reliably connected; the present invention provides a board, a chassis, a board communication system and a board in-place detection method, which can be applicable not only to single-row pins but also to multi-row pins board in-place detection, without increasing the detection cost, and the detection result is accurate and reliable.

[0006] In order to achieve the above object, the technical solution provided by the present invention includes:

[0007] In one aspect, the present invention provides a board card, the board card comprising a first connector, characterized in that:

[0008] The first connector is used to connect to the second connector in the chassis, the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series;

[0009] Among them, the first connector includes at least two detected pins which are connected in series and are used to detect whether the board is in place. Only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0010] Preferably, when the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in the column of pins form a conductive detection branch.

[0011] Preferably, the detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

[0012] Another aspect of the present invention further provides a chassis, which is used to install a board, and is characterized in that:

[0013] The board is provided with a first connector, the first connector comprising at least two detected pins connected in series and used to detect whether the board is in place.

[0014] The chassis is provided with a second connector, the second connector comprises at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series with each other;

[0015] Among them, only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0016] Preferably, when the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in the column of pins form a conductive detection branch.

[0017] Preferably, the detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

[0018] The third aspect of the present invention further provides a board-card communication system, comprising a chassis and one or more boards connected to the chassis, wherein the boards are provided with first connectors, and the chassis is provided with second connectors corresponding to the first connectors of the boards; characterized in that:

[0019] The second connector comprises at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series with each other;

[0020] Among them, the first connector includes at least two detected pins which are connected in series and are used to detect whether the board is in place. Only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0021] Preferably, when the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in the column of pins form a conductive detection branch.

[0022] Preferably, the detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

[0023] A fourth aspect of the present invention further provides a method for detecting whether a board is in place, characterized in that the board is provided with a first connector, the first connector includes at least two detected pins connected in series and used to detect whether the board is in place, a chassis matching the board is provided with a second connector, the second connector includes at least two detection pins used to detect whether the board is in place, and the detection pins are connected in series, at least one of the detection pins is coupled to at least one of the detected pins, and the detection branch includes at least three pairs of coupling pins; the method comprises:

[0024] When the board is installed in the chassis, determining an electrical signal of a signal collection unit provided on the board and connected to a detected pin on the board, or a signal collection unit provided on the chassis and connected to the detection pin;

[0025] Determine whether the electrical signal satisfies a predetermined value, and the predetermined value is a parameter value that the signal sampling unit should satisfy when the board is in a normal in-place state;

[0026] If the electrical signal satisfies the predetermined value, it is determined that the board is in place; if the electrical signal does not satisfy the predetermined value, it is determined that the board is not in place.

[0027] By adopting the above technical solution provided by the present application, at least one of the following beneficial effects can be obtained:

[0028] 1. Some pins are set on the board as detected pins, and some detection pins are set on the chassis as detection pins, and at least one of the detected pins and the detection pins can be coupled. In this way, if the board is correctly installed in the chassis, a detection branch can be formed between the detected pins and the detection pins. In this way, whether the board is in place can be judged by whether the detection branch is turned on (formed); thereby providing a technical solution for accurately detecting whether the board is in place.

[0029] 2. The technical solution provided in this application is not only applicable to boards with single-column pin connections, but also to boards with multi-column pins. It can also detect whether multiple pins in different rows and columns at both ends of the connector are reliably connected, and the detection result is more reliable.

[0030] 3. It is only necessary to set up a signal acquisition unit connected to the detected pins on the board, or to set up a signal acquisition unit connected to the detection pins on the chassis. In this way, only one in-situ detection signal needs to be provided. When applied to a board with multiple columns of pins, it can save detection signal acquisition resources and reduce detection costs.

[0031] Other features and advantages of the invention will be described in the following description, and partly become apparent from the description, or understood by implementing the technical solution of the invention. The purpose and other advantages of the invention can be achieved and obtained by the structures and / or processes specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a board and a chassis provided for an embodiment of the invention.

[0033] Figure 2 A partial schematic diagram of connector pins in a first board-to-card communication system provided by an embodiment of the present invention.

[0034] Figure 3 A partial schematic diagram of connector pins in a second board-to-card communication system provided by an embodiment of the present invention.

[0035] Figure 4 A partial schematic diagram of connector pins in a third board-to-card communication system provided by an embodiment of the present invention.

[0036] Figure 5 A partial schematic diagram of connector pins in a fourth board-to-card communication system provided by an embodiment of the present invention.

[0037] Figure 6 A partial schematic diagram of connector pins in a fifth board-to-card communication system provided by an embodiment of the present invention.

[0038] Figure 7 A partial schematic diagram of connector pins in a sixth board-to-card communication system provided by an embodiment of the present invention.

[0039] Figure 8 A flow chart of a method for detecting board in-place is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only to make it easier and clearer for ordinary technicians in the field to understand the present invention, rather than a restrictive interpretation of the present invention; and as long as there is no conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0041] Additionally, the steps shown in the flowcharts of the accompanying drawings may be executed in a control system such as a set of controller executable instructions, and although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown here.

[0042] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments:

[0043] Example

[0044] like Figure 1 As shown, this embodiment provides a schematic diagram of a board and a chassis, the interior of the chassis is a chassis backplane 200, and there are multiple connectors (hereinafter referred to as second connectors) on the chassis backplane, each connector 210, 220, 230, 240 is arranged side by side, and each connector 210, 220, 230, 240 corresponds to and matches with a first connector 110 of a board 100; and preferably, in this embodiment, the pin lengths on the connector 110 of the board are set to be the same, and the pins in each second connector on the chassis backplane are also set to be the same. It should be noted that Figure 1 This is only a schematic diagram of the preferred structure of the board and the chassis in this embodiment. This embodiment is not limited to this. For example, the chassis backplane can be provided with only one second connector as needed. If multiple second connectors are provided, they can also be arranged in multiple rows (rather than as Figure 1 The first connector and the second connector are merely for the convenience of explaining the relationship between the board and the backplane, and "first" and "second" do not limit the technical solution of this embodiment. Those skilled in the art may also swap the above "first" and "second" or replace them with other serial numbers.

[0045] The technical solution provided in this embodiment is to ensure that the first connector in the board is inserted into the second connector in the chassis backplane, and whether the board is in place can be accurately detected; the first connector and the second connector are optimized on the basis of the existing technology; for example, some pins in the first connector are set to a conductive state, and then some pins in the second connector are set to a conductive state, and then the pins in the conductive state in the first connector and the pins in the conductive state in the second connector are provided with at least one pair of mutually coupled pins, so that after the board is inserted into the chassis backplane, a conductive pin in the first connector and a conductive pin in the second connector can be formed between the conductive pins. A branch is provided, and the branch includes at least three pairs of mutually coupled pins; a detection voltage branch is then set at one end corresponding to the detection branch, and a ground terminal is set at the other end, so that if the detection branch corresponding to the at least three pairs of mutually coupled pins can be fully turned on as expected, the corresponding detection signal in the detection branch will be different from the state parameters of the detection branch that is not turned on (for example, changes in voltage or current values); therefore, we can determine whether the detection branch including at least three pairs of mutually coupled pins is fully turned on by detecting whether the signal detection value in the detection branch undergoes an expected change; then, based on whether the detection branch including at least three pairs of mutually coupled pins is turned on, it can be inferred whether the board is in place.

[0046] In order to achieve the above object, the present embodiment provides a board, which includes a first connector; and the first connector is used to connect to a second connector in a chassis, and the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series with each other;

[0047] Among them, the first connector includes at least two detected pins which are connected in series and are used to detect whether the board is in place. Only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0048] More specifically, m pins (numbered 1, 2...n...m) are selected in the first connector as detected pins, and at least two of the m detection pins are connected in series with each other. Among the detection pins in the second connector corresponding to the m detected pins, the detection pins that are not connected in series with each other among the m detected pins need to be connected in series with each other. In this way, if the board is in place, a detection branch connected in series can be formed between the m detected pins and the m detection pins. (For example, the first pin in the first connector is connected to the second pin, and the remaining pins from m-2 to m in the second connector are connected in series, and then connected in series with the first pin or the second pin in the second connector; or for example, the first pin in the first connector is connected to the nth pin, and the remaining pins from m to mn in the second connector are connected in series, the n-1 to 2 pins are connected in series, and then connected in series with the first pin or the nth pin in the second connector); of course, the corresponding numbers of the pins connected in series among the m detected pins and the corresponding numbers of the m detection pins connected in series are allowed to be repeated, for example, the first pin and the second pin in the first connector are connected in series, and the first pin and the second pin in the second connector are also connected in series.

[0049] Preferably, when the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in one column of pins form a conductive detection branch.

[0050] Preferably, the detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

[0051] Further preferably, if the pin connected to the detection branch is set on the board, the pin on the board connected to the detection branch (for convenience of expression, referred to as pin a) is no longer connected to other pins, and pin a' on the chassis corresponding to pin a is connected to other pins on the chassis; if the pin connected to the detection branch is set on the chassis, the pin on the chassis connected to the detection branch (for convenience of expression, referred to as pin b) is no longer connected to other pins, and pin b' on the board corresponding to pin b is connected to other pins on the board; similarly, if the pin connected to the ground terminal is set on the board, the pin on the board connected to the ground terminal (for convenience of expression, referred to as pin c) is no longer connected to other pins, and pin c' on the chassis corresponding to pin c is connected to other pins on the chassis; if the pin connected to the ground terminal is set on the chassis, the pin on the chassis connected to the ground terminal (for convenience of expression, referred to as pin d) is no longer connected to other pins, and pin d' on the board corresponding to pin d is connected to other pins on the board. In order to facilitate sampling, in the preferred technical solution provided in this embodiment, the sampling point is set to directly sample the pin connected to the detection branch; that is, the pin directly connected to the sampling point or the detection branch, and the pin directly connected to the ground terminal, are not directly connected to other pins in the connector where they are located, thereby ensuring that the connection status of the pin directly connected to the sampling point or the detection branch, and the pin directly connected to the ground terminal can be accurately detected.

[0052] The present application also provides a chassis corresponding to the above-mentioned board, the chassis is used to install the board, and the board is provided with a first connector, the first connector includes at least two detected pins connected in series and used to detect whether the board is in place,

[0053] The chassis is provided with a second connector, the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series with each other;

[0054] Among them, only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0055] The present application also provides a computer comprising the above-mentioned chassis and one or more boards connected to the chassis, wherein the boards are provided with first connectors, and the chassis is provided with second connectors corresponding to the first connectors of the boards respectively;

[0056] The second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series with each other;

[0057] Among them, the first connector includes at least two detected pins which are connected in series and are used to detect whether the board is in place. Only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins.

[0058] In order to make it easier for those skilled in the art to understand the specific implementation of this embodiment, Figure 2-Figure 7 The board, chassis and board communication system provided in this embodiment are further described.

[0059] Figure 2 and Figure 5 Corresponding to the two columns of pins:

[0060] like Figure 2 As shown, a pin X (herein, the 5th pin is used as an example) at the upper end of the first connector 110 in the board 100 is selected to connect the detection signal, and a pin Y (herein, the 60th pin is used as an example) at the lower end of the second connector 210 in the chassis backplane 200 is connected to the ground; Figure 2 It can be seen that the 5th pin of the first connector 110 in the board 100 is connected to the detection signal, and the 6th pin is connected to the 60th pin; the 5th pin of the second connector 210 in the chassis backplane 200 is connected to the 6th pin, and the 60th pin is grounded. In this way, after the board is inserted into the chassis, if the 5th, 6th, and 60th pins are all reliably connected, the detection signal is low level; if any of the 5th, 6th, and 60th pins is not reliably connected, the detection signal is high level. Therefore, the level of the detection signal can be used to determine whether the board is in place.

[0061] It should be noted that the pins with the same number on the two connectors are connected correspondingly after the board is securely inserted into the chassis. For example, after the board is securely inserted into the chassis, pin 1 of the board connector corresponds to pin 1 of the chassis backplane connector.

[0062] Therefore, for the application scenario of two columns of pins, the technical solution provided by this embodiment is adopted: 1. Only one detection signal is required; 2. It can detect whether multiple pins at different positions of the connector are reliably connected. The selection of pins must meet the following requirements: a. Three points determine a plane, so at least 3 pins are required; b. At least two pins are distributed at both ends of the connector and in different rows and columns.

[0063] like Figure 3 As shown in the figure, the X pin at the top of the card connector and the Y pin at the bottom of the chassis backplane connector can be connected to opposite voltage levels, not limited to Figure 2 Level connection method; Figure 3In the embodiment, if the detection signal is at a low level, it means that the board is not in place; if the detection signal is at a high level, it means that the board is in place, and the purpose of the invention of the embodiment of the present application can also be achieved.

[0064] like Figure 4 As shown, the pin numbers of the X pin at the top of the card connector and the Y pin at the bottom of the chassis backplane connector are not limited to Figure 2 5 and 60 in the figure, as long as X and Y are located at the two ends of the two connectors, for example, Figure 4 The connection in can also achieve the invention purpose of the embodiment of the present application.

[0065] like Figure 5 As shown, the number of the middle pins between the upper X pin of the first connector in the board 100 and the lower Y pin of the second connector 210 in the chassis backplane 200 is not limited to one, nor is it limited to Figure 2 For example Figure 5 The purpose of the embodiment of the present application can also be achieved by using two middle pins (pin 6 and pin 32), and since more pins are detected, the detection result is more reliable.

[0066] like Figure 6 As shown, the technical solution provided in this embodiment does not exclude the possibility that it can also be applied to a board with a column of pins. Specifically, the 3rd pin and the 17th pin corresponding to the second connector 220 in the chassis backplane 200 can be connected in series, and the 17th pin and the 30th pin of the first connector 130 in the board 100 can be connected in series, and then the 3rd pin of the first connector 130 is connected to the detection branch (a branch composed of a power supply, an impedance and a sampling point 140), and the 30th pin of the second connector 220 is connected to the ground terminal; in this way, after the board is installed, it is also possible to determine whether the board is in place after installation based on whether the sampling point 140 is at a low level; the purpose of the invention of the embodiment of the present application can also be achieved.

[0067] This embodiment can also be applied to more columns of pins, such as Figure 7 As shown, corresponding to the three columns of pins, the 7th pin in the first column of the second connector 230 in the chassis board 200 is connected to the 8th pin in the second column, and the 9th pin in the third single column of the second connector 230 is connected to the 90th pin; the 8th pin in the second column and the 9th pin in the third column in the first connector 150 in the board 1 are connected (in series); and the 7th pin in the first column in the first connector 150 is connected to a detection branch, and the 90th pin in the first connector 150 is connected to the ground terminal; in this way, after the board is installed, it is also possible to determine whether the board is in place after installation based on whether the sampling point 160 is at a low level; the purpose of the invention of the embodiment of the present application can also be achieved.

[0068] More columns of pins are not listed one by one here. The detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; in this way, a pin can be selected from each column as a representative to determine whether the pins in this column have good contact.

[0069] like Figure 8 As shown, an embodiment of the present application further provides a method for detecting a board in place, wherein the board adopts the board mentioned in the above embodiment, for example, the board is provided with a first connector, the first connector includes at least two detected pins connected in series and used to detect whether the board is in place, and a chassis matching the board is provided with a second connector, the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series, and at least one of the detection pins is coupled to at least one of the detected pins; the method for detecting a board in place includes:

[0070] S100, when the board is installed in the chassis, determining the electrical signal of a signal collection unit provided on the board and connected to the detected pin on the board, or a signal collection unit provided on the chassis and connected to the detection pin;

[0071] S200, determining whether the electrical signal satisfies a predetermined value, wherein the predetermined value is a parameter value that the signal sampling unit should satisfy when the board is in a normal position; the parameter value can be predicted after the structure of the detected pin, the detection pin, the detection branch and the ground terminal is determined; for example, the above Figure 2 , Figure 4 , Figure 5 , and 6, Figure 7 In the corresponding detection branch, if the board is in place, the signal sampling value should correspond to a low level, and the predetermined value corresponds to a low level; Figure 3 Corresponding detection branch, if the board is in place, the signal sampling value should correspond to a high level, and the predetermined value corresponds to a high level accordingly. It should be noted that in this preferred embodiment, the impedance value corresponding to the pin itself and the pin-to-pin series connection is not considered; of course, if in actual applications, it is necessary to consider the impedance value corresponding to the pin itself and the pin-to-pin series connection, and adjust the power supply voltage in the detection branch or the impedance value in the detection branch accordingly, and the predetermined value can also be adjusted accordingly; as long as the signal sampling value can distinguish whether the board is normally in place or not in place, these different implementations belong to the protection scope of this application.

[0072] S300: If the electrical signal in the above S200 meets a predetermined value, it is determined that the board is in place; if the electrical signal does not meet the predetermined value, it is determined that the board is not in place.

[0073] By adopting the above technical solution provided by the present application, at least one of the following beneficial effects can be obtained:

[0074] 1. Some pins are set on the board as detected pins, and some detection pins are set on the chassis as detection pins, and at least one of the detected pins and the detection pins can be coupled. In this way, if the board is correctly installed in the chassis, a detection branch can be formed between the detected pins and the detection pins. In this way, whether the board is in place can be judged by whether the detection branch is turned on (formed); thereby providing a technical solution for accurately detecting whether the board is in place.

[0075] 2. The technical solution provided in this application is not only applicable to boards with single-column pin connections, but also to boards with multi-column pins. It can also detect whether multiple pins in different rows and columns at both ends of the connector are reliably connected, and the detection result is more reliable.

[0076] 3. It is only necessary to set up a signal acquisition unit connected to the detected pins on the board, or to set up a signal acquisition unit connected to the detection pins on the chassis. In this way, only one in-situ detection signal needs to be provided. When applied to a board with multiple columns of pins, it can save detection signal acquisition resources and reduce detection costs.

[0077] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0078] Finally, it should be noted that the above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and simple replacements to the technical solution of the present invention by using the above disclosed practices and technical contents without departing from the scope of the technical solution of the present invention, which all belong to the scope of protection of the technical solution of the present invention.

Claims

1. A board, comprising a first connector, characterized in that: The first connector is used to connect to the second connector in the chassis, the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series; and the chassis back panel has a plurality of second connectors arranged side by side, each second connector corresponds to and matches with a first connector in a board, and the first connector and the second connector are respectively arranged in at least two rows of pins; Wherein, the first connector comprises at least two detected pins connected in series and used to detect whether the board is in place, and only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch comprises at least three pairs of coupling pins; The selection of the pins requires that at least two pins are distributed at both ends of the connector and in different rows and columns, and three detection points corresponding to at least three pairs of coupling pins determine a detection plane.

2. The board according to claim 1, characterized in that: When the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in one column of pins form a conductive detection branch.

3. The board according to claim 1, characterized in that: The detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

4. A chassis, the chassis is used to install a board, characterized in that: The board is provided with a first connector, the first connector comprising at least two detected pins connected in series and used to detect whether the board is in place. The chassis is provided with a second connector, the second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series; and the chassis back panel is provided with a plurality of second connectors arranged side by side, each second connector corresponds to and matches with a first connector in a board, and the first connector and the second connector are respectively arranged in at least two rows of pins; Wherein, only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch includes at least three pairs of coupling pins; The selection of the pins requires that at least two pins are distributed at both ends of the connector and in different rows and columns, and three detection points corresponding to at least three pairs of coupling pins determine a detection plane.

5. The chassis according to claim 4, characterized in that: When the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in one column of pins form a conductive detection branch.

6. The chassis according to claim 4, characterized in that: The detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

7. A board-card communication system, comprising a chassis and one or more boards connected to the chassis, wherein the boards are provided with first connectors, and the chassis is provided with second connectors corresponding to the first connectors of the boards; characterized in that: The second connector includes at least two detection pins for detecting whether the board is in place, and the detection pins are connected in series; and there are a plurality of second connectors arranged side by side on the back panel of the chassis, each second connector corresponds to and matches with a first connector in a board, and the first connector and the second connector are respectively arranged in at least two rows of pins; Wherein, the first connector comprises at least two detected pins connected in series and used to detect whether the board is in place, and only when the board is correctly installed in the chassis, at least one of the detection pins is coupled with at least one of the detected pins, so that a detection branch is formed between the detection pin and the detected pin, and the detection branch comprises at least three pairs of coupling pins; The selection of the pins requires that at least two pins are distributed at both ends of the connector and in different rows and columns, and three detection points corresponding to at least three pairs of coupling pins determine a detection plane.

8. The board communication system according to claim 7, characterized in that: When the first connector and the second connector are respectively provided with more than one column of connecting pins, the detection pins and / or the pins to be detected are pins arranged in different columns, and the detection branch includes at least one of the connecting pins in each column; or when the first connector and the second connector are respectively provided with only one column of connecting pins, at least one of the detection pins is coupled with at least one of the detected pins, so that when the board is correctly installed in the chassis, at least three pins in one column of pins form a conductive detection branch.

9. The board communication system according to claim 7, characterized in that: The detection branch also includes a signal acquisition unit arranged on the board and connected to the detected pin on the board, or a signal acquisition unit arranged on the chassis and connected to the detection pin; and a ground terminal arranged on the board and connected to the detected pin on the board, or a ground terminal arranged on the chassis and connected to the detection pin; and the detection branch also includes a power supply and an impedance element, so that the electrical signals when the detection branch is turned on and when it is not turned on are different.

10. A method for detecting a board in place, characterized in that: The board is provided with a first connector, the first connector includes at least two detected pins connected in series and used to detect whether the board is in place, the chassis matched with the board is provided with a second connector, the second connector includes at least two detection pins used to detect whether the board is in place, and the detection pins are connected in series, at least one of the detection pins is coupled with at least one of the detected pins, and the detection branch includes at least three pairs of coupling pins; the method includes: A plurality of second connectors are arranged side by side on the chassis back panel, each second connector is matched with a first connector in a board, and the first connector and the second connector are arranged in at least two rows of pins; When the board is installed in the chassis, an electrical signal of a signal acquisition unit provided on the board and connected to a detected pin on the board or provided on the chassis and connected to the detection pin is determined; whether the electrical signal satisfies a predetermined value, and the predetermined value is a parameter value that the signal sampling unit should satisfy when the board is in a normal position; If the electrical signal satisfies the predetermined value, it is determined that the board is in place; if the electrical signal does not satisfy the predetermined value, it is determined that the board is not in place; The selection of the pins requires that at least two pins are distributed at both ends of the connector and in different rows and columns, and three detection points corresponding to at least three pairs of coupling pins determine a detection plane.

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