Plug stability judgment circuit and method for double-row multi-pin connecting device

Abstract

The invention discloses a stable insertion judgment circuit and method for a double-row multi-pin connecting device. The stable insertion judgment circuit comprises a state judgment logic gate, wherein the state judgment logic gate is provided with two logic input ends and a logic output end; and two input ends of the state judgment logic gate are used for receiving logic signals from two diagonal pins of the double-row multi-pin connecting device. The state judgment logic gate judges the plugging condition of two main diagonal pins according to logic signals of the two main diagonal pins of the double-row multi-pin connecting device, and outputs corresponding logic signals according to the judged plugging condition, so that the real-time monitoring of the plugging connection condition of the double-row multi-pin connecting device can be realized. And the insertion connection condition of the double-row multi-pin connecting device can be accurately obtained by testing the logic signal output by the state judgment logic gate.

Description

Technical Field

[0001] The invention relates to an electrical state determination circuit, and in particular to an insertion stability determination circuit and method for a double-row multi-pin connection device. Background Art

[0002] See also Figure 1 A double-row multi-pin connector is a common electrical device. On both sides of the double-row multi-pin connector, symmetrically arranged n pins (n ​​is a natural number and an even number) are provided. Figure 1 as shown in .

[0003] In the electrical equipment where the double-row multi-pin connector is required to be installed, a corresponding double-row multi-pin connector socket is usually provided specifically, and the double-row multi-pin connector is inserted into the double-row multi-pin connector socket to achieve insertion connection.

[0004] The current problem is:

[0005] Some existing double-row multi-pin connectors have a large number of pins, sometimes even up to one or two hundred pins. When such double-row multi-pin connectors are inserted into double-row multi-pin connector sockets, if they are slightly skewed, some pins may not be firmly inserted, resulting in poor contact during subsequent use, which in turn causes the electrical equipment to malfunction and even causes accidents. Summary of the invention

[0006] The object of the present invention is to provide a plug-in determination circuit for a double-row multi-pin connector, which can monitor the plug-in connection status of the double-row multi-pin connector in real time, thereby providing technical support for avoiding abnormal operation of the device.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0008] A plug-in stability determination circuit for a double-row multi-pin connection device, the plug-in stability determination circuit comprising a state determination logic gate having two logic input terminals and a logic output terminal; the two input terminals of the state determination logic gate are used to receive logic signals from two diagonal pins of the double-row multi-pin connection device.

[0009] Furthermore, the logic function of the state determination logic gate is set as follows: when the two diagonal pins of the double-row multi-pin connecting device are normally and stably plugged in and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a first logic signal; when one or two diagonal pins of the double-row multi-pin connecting device are not normally and stably plugged in and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a second logic signal; the first logic signal is opposite to the second logic signal.

[0010] Furthermore, the state determination logic gate is an "OR gate" or an "AND gate".

[0011] Furthermore, the length of the diagonal pin is set to be shorter than that of other pins; the length of the diagonal pin is set to be 60% of the length of other pins.

[0012] Furthermore, the diagonal pins are main diagonal pins or sub-diagonal pins.

[0013] A method for determining whether a double-row multi-pin connector is stable in insertion, the method comprising: setting a state determination logic gate for the double-row multi-pin connector, the state determination logic gate having two logic input terminals and one logic output terminal; the two input terminals of the state determination logic gate are used to receive logic signals from two diagonal pins of the double-row multi-pin connector.

[0014] Furthermore, the logic function of the state determination logic gate is set as follows: when the two diagonal pins of the double-row multi-pin connecting device are normally and stably plugged in and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a first logic signal; when one or two diagonal pins of the double-row multi-pin connecting device are not normally and stably plugged in and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a second logic signal; the first logic signal is opposite to the second logic signal.

[0015] Furthermore, the state determination logic gate is an "OR gate" or an "AND gate".

[0016] Furthermore, the length of the diagonal pins of the double-row multi-pin connecting device is set to be shorter than that of other pins; the length of the diagonal pins is set to be 60% of the length of other pins.

[0017] Furthermore, the diagonal pins are main diagonal pins or sub-diagonal pins.

[0018] Compared with the prior art, the insertion stability determination circuit of the present invention has the following beneficial effects:

[0019] A state determination logic gate is set for the double-row multi-pin connecting device. The state determination logic gate determines the plugging status of the two main diagonal pins of the double-row multi-pin connecting device according to the logic signals of the two main diagonal pins of the double-row multi-pin connecting device, and outputs a corresponding logic signal according to the determined plugging status, thereby realizing real-time monitoring of the insertion and connection status of the double-row multi-pin connecting device. By testing the logic signal output by the state determination logic gate, the insertion and connection status of the double-row multi-pin connecting device can be accurately known. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a double-row multi-pin connection device according to the present invention;

[0021] Figure 2 It is a schematic diagram of a plug-in stability determination circuit for a double-row multi-pin connection device according to the present invention;

[0022] Figures 3 to 6 is a schematic diagram of an implementation case based on the present invention,

[0023] in,

[0024] Figure 3 This is the electrical schematic diagram of the dual edge connector on the motherboard.

[0025] Figure 4 This is a schematic diagram of a dual-input OR gate on the motherboard.

[0026] Figure 5 This is a schematic diagram of the structure of the double-edge connector entity on the main board.

[0027] Figure 6 Figure 1 is a schematic diagram of the dual edge connector on the backplane. DETAILED DESCRIPTION

[0028] The present invention will be further described below with specific embodiments:

[0029] This embodiment provides a stable insertion determination circuit for a double-row multi-pin connection device, and the stable insertion determination circuit is used to determine whether the double-row multi-pin connection device is securely inserted and connected.

[0030] Those skilled in the art will understand that the “logic signal” mentioned in this article refers to a “binary signal”, which is a high or low level signal in an actual circuit.

[0031] It should be noted that the double-row multi-pin connector device involved in this embodiment is a relatively common electrical device form. Specifically, n pins (n ​​is a natural number and an even number) arranged symmetrically are provided on both sides of the double-row multi-pin connector device, such as Figure 1In the electrical equipment where the double-row multi-pin connector is required to be installed, a corresponding double-row multi-pin connector socket is usually provided for the purpose, and the double-row multi-pin connector is inserted into the double-row multi-pin connector socket, so that the insertion connection can be realized.

[0032] In order to facilitate accurate description in the following text,

[0033] The pins at the diagonal positions of the entire double-row multi-pin connection device are called a pair of diagonal pins;

[0034] Further,

[0035] The pin numbered 1 and the pin numbered n of the double-row multi-pin connector are called "main diagonal pins";

[0036] The pin numbered 2 and the pin numbered n-1 of the double-row multi-pin connecting device are referred to as "sub-diagonal pins".

[0037] The insertion stability determination circuit of this embodiment is specially designed for the double-row multi-pin connection device. The insertion stability determination circuit can timely predict whether the double-row multi-pin connection device is securely inserted into the double-row multi-pin connection socket.

[0038] See also Figure 2 The insertion stability determination circuit of this embodiment includes a logic gate circuit. For the convenience of accurate description, the logic gate circuit is referred to as a "state determination logic gate".

[0039] The state determination logic gate is a "dual-input, single-output" logic gate circuit, that is, the state determination logic gate has two logic input terminals and one logic output terminal.

[0040] It should be noted that the state determination logic gate may be a single gate circuit, a combination of multiple gate circuits, or a pure logic circuit, as long as it can realize the logic function that meets the determination requirements.

[0041] The two input terminals of the state determination logic gate are respectively connected to the two main diagonal pins of the double-row multi-pin connection device to receive the logic signal states (usually high and low levels) from the two main diagonal pins.

[0042] Set the logic function of the state determination logic gate to:

[0043] When the two main diagonal pins of the double-row multi-pin connection device are normally and stably connected, the logic signals received by the two input ends of the state determination logic gate from the two main diagonal pins can cause the output end of the state determination logic gate to output a first logic signal;

[0044] When one or two main diagonal pins of the double-row multi-pin connection device are not normally and stably connected, the logic signals received by the two input ends of the state determination logic gate from the two main diagonal pins can cause the output end of the state determination logic gate to output a second logic signal;

[0045] The first logic signal is opposite to the second logic signal.

[0046] In this way, it is possible to determine whether the dual-row multi-pin connection device is reliably connected by determining the logic signal outputted from the output end of the state determination logic gate.

[0047] Specifically,

[0048] When the output end of the state determination logic gate outputs a first logic signal, it can be determined that the double-row multi-pin connection device is normally inserted and connected;

[0049] When the output terminal of the state determination logic gate outputs the second logic signal, it can be determined that the dual-row multi-pin connection device is not securely inserted and connected.

[0050] The output end of the state determination logic gate is connected to a specific alarm system, and the alarm system can issue an alarm message by judging the logic signal output by the output end of the state determination logic gate. In addition, the output end of the state determination logic gate is connected to the enable end of some equipment, so that the operation state of the equipment can be controlled by judging the logic signal output by the output end of the state determination logic gate, such as starting and stopping operation.

[0051] It should be noted that, based on the structural characteristics of the double-row multi-pin connector and based on past experience, as long as the two main diagonal pins are firmly connected, the connections of the other pins of the double-row multi-pin connector are also reliable. Therefore, as long as the two main diagonal pins are firmly connected, it can be determined that the connection of the entire double-row multi-pin connector is reliable.

[0052] It should be noted that when the electrical functions of the two main diagonal pins of the dual-row multi-pin connection device do not meet the requirements of the state judgment logic gate input, a simple electrical function modification can be performed on the main diagonal pins, such as setting a pull-up resistor or a pull-down resistor, and then collecting the resistor voltage as the input signal of the state judgment logic gate to meet the requirements.

[0053] The ultimate goals of the electrical function transformation are:

[0054] When the main diagonal pin is connected normally or not connected normally, the input end of the state judgment logic gate should be able to receive a specific logic signal from the main diagonal pin; and "when the main diagonal pin is connected normally, the logic signal received by the state judgment logic gate from the main diagonal pin" is opposite to "when the main diagonal pin is not connected normally, the logic signal received by the state judgment logic gate from the main diagonal pin".

[0055] As mentioned above, the state determination logic gate can be a single gate circuit, a combination of multiple gate circuits, or a pure logic circuit. The simplest approach is to use a "dual-input, single-output" "OR gate" or "AND gate" as the state determination logic gate.

[0056] Take the OR gate as an example:

[0057] For a double-row multi-pin connection device, a pull-up resistor or a pull-down resistor can be set for the main diagonal pins, so that the two main diagonal pins can apply a low-level signal to the input end of the state determination logic gate when they are normally plugged in, and can apply a high-level signal to the input end of the state determination logic gate when they are not normally plugged in; in this way, as long as one of the main diagonal pins is not normally plugged in firmly, the state determination logic gate will receive a high-level signal, and after an OR operation, the output end of the state determination logic gate will output a high-level signal. As long as it is detected that the state determination logic gate outputs a high-level signal, it can be determined that the entire double-row multi-pin connection device is not firmly plugged in.

[0058] Those skilled in the art can understand that, compared with the OR gate, it is similar to use the AND gate as the state determination logic gate, and it is only necessary to swap the roles of the high-level signal and the low-level signal during the implementation process.

[0059] In addition, to ensure the accuracy of the judgment, the length of the two main diagonal pins can be set shorter than the other pins. In this way, as long as it can be determined that the two main diagonal pins are reliably plugged, the other pins must also be reliably plugged. The length of the main diagonal pin is preferably set to 60% of the length of the other pins.

[0060] The main advantages of the plug-in stable determination circuit of this embodiment are:

[0061] A state determination logic gate is set for the double-row multi-pin connecting device. The state determination logic gate determines the plugging status of the two main diagonal pins of the double-row multi-pin connecting device according to the logic signals of the two main diagonal pins of the double-row multi-pin connecting device, and outputs the corresponding logic signal according to the determined plugging status. In this way, real-time monitoring of the insertion and connection status of the double-row multi-pin connecting device can be achieved. By testing the logic signal output by the state determination logic gate, the insertion and connection status of the double-row multi-pin connecting device can be accurately known, thereby providing technical support for avoiding abnormal operation of the equipment.

[0062] It should be noted that, in other implementations, the secondary diagonal pins of the double-row multi-pin connector may be used to replace the primary diagonal pins to achieve real-time monitoring of the insertion and connection status of the double-row multi-pin connector.

[0063] Here is a practical example:

[0064] It should be noted that the "main board" and "backplane" mentioned in this case are custom names. In essence, they are two electrical circuit boards that need to be connected to each other through connectors.

[0065] See also Figure 3 , Figure 3 What is shown in the figure is a double-edge connector on the motherboard (i.e., a double-row, multi-pin connection device). The connector has 120 PINs (pins). Its control PINs are PIN1 and PIN120. The structure is remote-to-pin. For example, PIN 1 is pulled up by "3.3V through a 4.75K resistor through R26", and the PIN name is FULLIN_BP_1. PIN 120 is also pulled up by "a 4.75K resistor through R27". The middle PIN NET of the connector is only an example and does not need to be paid attention to.

[0066] See also Figure 4 , Figure 4 The figure shows a dual-input OR gate on the motherboard (model SN74AHC1G32GW from TI). The "APIN pin" is connected to FULLIN_MB_1 of the dual-edge connector on the motherboard, and the "B PIN pin" is connected to FULLIN_MB_2PIN of the dual-edge connector on the motherboard. It constitutes the input pin, and the power supply voltage is 3.3V. The "output pin Y" is FULLIN_CPU connected to the CPU controller of the motherboard. The high and low levels of FULLIN_CPU are used to determine whether this connector is firmly inserted.

[0067] See also Figure 5 , Figure 5The figure shows a double edge connector (i.e. a double row multi-pin connection device) on a motherboard, where the length of the metal part of the first PIN pin and the last PIN pin is 60% of the length of the metal part of a normal PIN pin, so that the first and last PIN pins are diagonally opposite to each other.

[0068] See also Figure 6 , Figure 6 The figure shows a double edge connector (i.e., a double row multi-pin connector) placed on the backplane. The connector has 120 pins. Pin 1 is the control pin FULLIN_BP_1, which is grounded through a 100 ohm resistor R24. Pin 120 is also the control pin FULLIN_BP_2, which is also grounded through a 100 ohm resistor. The middle pin is only an example and is not worth paying attention to.

[0069] In this case, the technical points are concentrated on the following points:

[0070] 1. Figure 3 The dual edge connector on the motherboard Figure 5 The two-side connectors on the backplane are connected, the 1PIN connector on the mainboard is connected to the 1PIN connector on the backplane, and the 120PIN connector on the mainboard is connected to the 120PIN connector on the backplane. If the connection is stable, the resistors R24 and R26 form a voltage divider circuit, and the signal FULLIN_MB_1 is low level, and the resistors R25 and R27 form a voltage divider circuit, and the signal FULL_MB_2 is low level;

[0071] 2. Signal FULLIN_MB_1 and signal FULLIN_MB_2 pass through Figure 5 The schematic diagram shows a two-input OR gate. When the input signals are both low level, the output is low level. At this time, the signal FULLIN_CPU is sent to the main controller CPU to inform the CPU that the main board and the backplane connector are well connected. During the production line test, if the signal FULLIN_CPU is low level, the main backplane is assembled well.

[0072] 3. On the double-edge connector, on the corresponding PIN of the plug-in circuit on the motherboard, shorten the connecting metal on the PIN to 60% of the normal PIN foot length. In this way, the metal connection parts of the 1PIN and 120PIN corresponding to the schematic diagram are made 60% of the normal PIN. In this way, if the two connectors are not plugged in tightly enough, the PIN feet of the corresponding plug-in circuit cannot be connected, resulting in the signals FULLIN_MB_1 and FULLIN_MB_2 being high, and the output signal FULLIN_CPU being high, it is judged that the motherboard and the backplane are not assembled properly. If the connector is inserted obliquely, causing one PIN foot to touch and the other diagonal PIN not to touch, the FULLIN_CPU signal is also high, and the CPU is also judged that the motherboard and the backplane are not assembled properly.

[0073] 4. Through the metal length of the PIN pin and the stable insertion signal of the two diagonal PINs, a reliable and stable connection can be ensured in the assembly of the mainboard and the backplane, avoiding poor connection during use.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plug-in stability determination circuit for a double-row multi-pin connection device, characterized in that: The insertion stability determination circuit comprises a state determination logic gate, wherein the state determination logic gate has two logic input terminals and a logic output terminal; The two input terminals of the state determination logic gate are used to receive logic signals from two diagonal pins of the double-row multi-pin connection device.

2. The insertion stability determination circuit for a double-row multi-pin connection device according to claim 1, characterized in that: The logic function of the state determination logic gate is set as: When the two diagonal pins of the double-row multi-pin connection device are normally and stably inserted and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a first logic signal; When one or two diagonal pins of the double-row multi-pin connection device are not normally and stably connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a second logic signal; The first logic signal is opposite to the second logic signal.

3. The insertion stability determination circuit for a double-row multi-pin connection device according to claim 1, characterized in that: The state determination logic gate is an "OR gate" or an "AND gate".

4. The insertion stability determination circuit for a double-row multi-pin connection device according to claim 1, characterized in that: The length of the diagonal pins is set to be shorter than that of other pins; The length of the diagonal pins is set to 60% of the length of the other pins.

5. The insertion stability determination circuit for a double-row multi-pin connection device according to claim 1, characterized in that: The diagonal pins are main diagonal pins or sub-diagonal pins.

6. A method for determining whether a double-row multi-pin connector is properly plugged in, characterized in that: The insertion stability determination method comprises: A state determination logic gate is provided for the double-row multi-pin connection device, wherein the state determination logic gate has two logic input terminals and one logic output terminal; The two input terminals of the state determination logic gate are used to receive logic signals from two diagonal pins of the double-row multi-pin connection device.

7. The method for determining whether a double-row multi-pin connector is properly plugged in according to claim 6, wherein: The logic function of the state determination logic gate is set as: When the two diagonal pins of the double-row multi-pin connection device are normally and stably inserted and connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a first logic signal; When one or two diagonal pins of the double-row multi-pin connection device are not normally and stably connected, the logic signals received by the two input ends of the state determination logic gate can cause the output end of the state determination logic gate to output a second logic signal; The first logic signal is opposite to the second logic signal.

8. The method for determining whether a double-row multi-pin connector is properly plugged in according to claim 6, wherein: The state determination logic gate is an "OR gate" or an "AND gate".

9. The method for determining whether a double-row multi-pin connector is properly plugged in according to claim 6, wherein: The length of the diagonal pins of the double-row multi-pin connector is set shorter than other pins; The length of the diagonal pins is set to 60% of the length of the other pins.

10. The method for determining whether a double-row multi-pin connector is properly plugged in according to claim 6, wherein: The diagonal pins are main diagonal pins or sub-diagonal pins.

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