Driving board with adjustable on-off state

Abstract

A driving board with an adjustable switch state comprises a driving circuit, a switch state jumper connection terminal, a switch connector CN1, a power supply connector CN2 and an output connector CN3, the switch connector CN1 is electrically connected with the driving circuit through the switch state jumper connection terminal, and the driving circuit is electrically connected with the power supply connector CN2 and the output connector CN3; wherein the on-off state jumper connection terminal comprises a three-end jumper connection terminal P1 and a two-end jumper connection terminal P2, and when a pin 1 and a pin 2 of the three-end jumper connection terminal P1 are in short circuit, the drive board with the adjustable on-off state is in a normally open output state; when the second pin and the third pin of the three-end jumper connection terminal P1 are in short circuit and the first pin and the second pin of the two-end jumper connection terminal P2 are in short circuit, the driving board with the adjustable switch state is in a normally-closed output state. Therefore, the driver board can be switched between the two switch state function requirements, the stock inventory and capital occupation of driver board manufacturers are reduced, and the economic benefits of the driver board manufacturers are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of driving boards for switching control of high-power electrical equipment, and particularly relates to a driving board with adjustable switching states. Background Technique

[0002] In some fields of automatic control technology, high-power electrical equipment needs to be controlled to turn on or off its power supply through a driving board, and the opening or closing of the driving board is controlled by a small switch signal; for example, the driving board for an automotive heated seat controls the power supply of the heating wire in the seat to heat the seat, improving the discomfort caused by the seat being too cold after long-term parking in winter. The opening or closing control of the driving board for an automotive heated seat is controlled by a pressure switch (or pressure sensor) arranged in the seat.

[0003] Due to different designs of each manufacturer, some require the driving board to be in the open state (normally open output) when the pressure switch (or pressure sensor) is closed, while some require the driving board to be in the open state (normally closed output) when the pressure switch (or pressure sensor) is open; due to the above different functional requirements for the driving board, usually two types of functional driving boards need to be designed to match the needs of different manufacturers, resulting in an increase in the inventory and capital occupation of the driving board manufacturer, thus affecting the economic benefits of the driving board manufacturer. Content of the Utility Model

[0004] In order to overcome the deficiencies in the background technique, the utility model discloses a driving board with adjustable switching states. Two jump terminals are arranged in the driving board, and by changing the jump states of the two jump terminals, the driving board can be switched between two switching state functions of normally open output and normally closed output, thereby reducing the inventory and capital occupation of the driving board manufacturer.

[0005] In order to achieve the purpose of the utility model, the following technical scheme is adopted: A driving board with adjustable switching states is used to control the opening or closing of the power supply of high-power electrical equipment by a small switch signal; it includes a driving circuit, a switching state jump terminal, a switch connector CN1, a power connector CN2, and an output connector CN3. The switch connector CN1 is electrically connected to the driving circuit through the switching state jump terminal, and the driving circuit is electrically connected to the power connector CN2 and the output connector CN3 respectively; when the driving board with adjustable switching states is in use, the switch connector CN1 is externally connected to a switch or a sensor, the power connector CN2 is externally connected to a power supply, and the output connector CN3 is externally connected to high-power electrical equipment;

[0006] The switch state jumper terminal includes a three-terminal jumper terminal P1, a two-terminal jumper terminal P2, and a current-limiting resistor R1; when changing the short-circuit state of the three-terminal jumper terminal P1 and the two-terminal jumper terminal P2, the drive board switches between the normally open output state and the normally closed output state.

[0007] Furthermore, the drive circuit includes an N-channel MOS field-effect transistor, and voltage-dividing resistors R2 and R3; the voltage-dividing resistors R2 and R3 are connected in series between the two-terminal jumper terminal P2, pin 2 of the switch connector CN1, and the ground GND; the gate G of the N-channel MOS field-effect transistor is connected to the common connection point of the voltage-dividing resistors R2 and R3, the drain D is connected to pin 1 of the output connector CN3, and the source S is connected to the ground GND.

[0008] Preferably, two N-channel MOS field-effect transistors are connected in parallel in the drive circuit.

[0009] Preferably, the drive circuit is also provided with a status indicator light-emitting diode LED, and a current-limiting resistor R4 is connected in series with the status indicator light-emitting diode LED. The current-limiting resistor R4 and the status indicator light-emitting diode LED are connected in series between the gate of the N-channel MOS field-effect transistor and the ground GND.

[0010] Furthermore, pin 2 of the output connector CN3 is connected to pin 1 of the power connector CN2, and pin 2 of the power connector CN2 is grounded to GND.

[0011] Preferably, it further includes a drive board status output terminal P3(6). One of the pins of the drive board status output terminal P3(6) is grounded to GND, and the other pin is connected to the common connection point of the resistors R1 and R2 and pin 2 of the switch connector CN1.

[0012] Due to the adoption of the above-mentioned technical solution, the present utility model has the following beneficial effects: A drive board with adjustable switch state disclosed by the present utility model includes a drive circuit, a switch state jumper terminal, a switch connector CN1, a power connector CN2, and an output connector CN3. The switch connector CN1 is electrically connected to the drive circuit through the switch state jumper terminal, and the drive circuit is electrically connected to the power connector CN2 and the output connector CN3 respectively; wherein the switch state jumper terminal includes a three-terminal jumper terminal P1 and a two-terminal jumper terminal P2. When pin 1 and pin 2 of the three-terminal jumper terminal P1 are short-circuited, the drive board with adjustable switch state is in the normally open output state; when pin 2 and pin 3 of the three-terminal jumper terminal P1 are short-circuited and pin 1 and pin 2 of the two-terminal jumper terminal P2 are short-circuited, the drive board with adjustable switch state is in the normally closed output state; thus realizing the switching of the drive board between two switch state function requirements, so as to reduce the stock inventory and capital occupation of drive board manufacturers, and improve the economic benefits of drive board manufacturers. Description of the Drawings

[0013] Figure 1 It is the principle block diagram of the drive board with adjustable switch state;

[0014] Figure 2 It is the circuit schematic diagram of the drive board with adjustable switch state in the first embodiment;

[0015] Figure 3 It is the circuit schematic diagram of the drive board with adjustable switch state in the second embodiment;

[0016] Figure 4 It is the circuit schematic diagram of the drive board with adjustable switch state in the third embodiment.

[0017] In the figure: 1. Drive circuit; 2. Switch state jumper terminal; 2.1. Three-terminal jumper terminal P1; 2.2. Two-terminal jumper terminal P2; 3. Switch connector CN1; 4. Power connector CN2; 5. Output connector CN3; 6. Drive board state output terminal P3. Specific implementation mode

[0018] The present invention can be explained in detail through the following embodiments, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] See the attached instruction Figure 1 : A drive board with adjustable switch state is used to control the opening or closing of the power supply of high-power electrical equipment by small switch signals; it includes a drive circuit 1, a switch state jumper terminal 2, a switch connector 3, a power connector 4, and an output connector 5. The switch connector 3 is connected to the drive circuit 1 through the switch state jumper terminal 2, and the drive circuit 1 is electrically connected to the power connector 4 and the output connector 5 respectively; when the drive board with adjustable switch state is in use, the switch connector 3 is externally connected to a switch or a pressure sensor, the power connector 4 is externally connected to a power supply, and the output connector 5 is externally connected to high-power electrical equipment;

[0020] The switch state jumper terminal 2 includes a three-terminal jumper terminal 2.1, a two-terminal jumper terminal 2.2, and a current-limiting resistor R1. When changing the short-circuit state of the three-terminal jumper terminal 2.1 and the two-terminal jumper terminal 2.2, the drive board switches between the normally open output state and the normally closed output state, thus reducing the inventory and capital occupation of drive board manufacturers. Embodiment 1:

[0021] See the attached instruction Figure 2:The drive board with adjustable switch state includes: drive circuit 1, switch state jumper terminal 2, switch connector 3, power connector 4, output connector 5. When the drive board with adjustable switch state is in use, the switch connector 3 is externally connected to a switch or a pressure sensor, the power connector 4 is externally connected to a power supply, and the output connector 5 is externally connected to a high-power electrical device; the switch state jumper terminal 2 includes a three-terminal jumper terminal 2.1, a two-terminal jumper terminal 2.2, and a current-limiting resistor R1 (10KΩ); the drive circuit 1 includes an N-channel MOS field-effect transistor, a voltage-dividing resistor R2 (100Ω), and a voltage-dividing resistor R3 (100KΩ);

[0022] Pin 1 of the three-terminal jumper terminal 2.1 is connected to the positive power supply terminal DC+ (40V), pin 2 is connected to pin 1 of the switch connector 3, and pin 3 is grounded to GND; pin 1 of the two-terminal jumper terminal 2.2 is connected to the positive power supply terminal DC+, pin 2 is connected to the current-limiting resistor R1 (10KΩ), and the current-limiting resistor R1 (10KΩ) is connected to GND through the series-connected voltage-dividing resistors R2 (100Ω) and R3 (100KΩ); pin 2 of the switch connector 3 is connected to the common connection point between the current-limiting resistor R1 (10KΩ) and the voltage-dividing resistor R2 (100Ω); pin 1 of the output connector 5 is connected to the drain D of the N-channel MOS field-effect transistor, and pin 2 is connected to pin 1 of the power connector 4; pin 2 of the power connector 4 is grounded to GND; the gate G of the N-channel MOS field-effect transistor is connected to the common connection point of the voltage-dividing resistors R2 and R3, and the source S is connected to GND.

[0023] When pin 1 and pin 2 of the three-terminal jumper terminal 2.1 are short-circuited by a jumper cap and pins 1 and 2 of the two-terminal jumper terminal 2.2 are open, the drive board with adjustable switch state is in the normally open output state; at this time, if the switch externally connected to the switch connector 3 is in the off state, the gate of the N-channel MOS field-effect transistor is at a low level, the N-channel MOS field-effect transistor is in the off state, and no current passes through the high-power electrical device externally connected to the output connector 5; when the switch externally connected to the switch connector 3 is in the closed state (for example, when a person sits on a heated car seat and closes the switch), the DC+ connected to pin 1 of the three-terminal jumper terminal 2.1 passes through the closed switch, the voltage-dividing resistor R2, and the voltage-dividing resistor R3 to GND. At this time, the gate of the N-channel MOS field-effect transistor is at a high level, the N-channel MOS field-effect transistor is in the on state, and the high-power electrical device externally connected to the output connector 5 has current passing through it and enters the working state.

[0024] When the 2nd and 3rd pins of the three-terminal jumper terminal 2.1 are short-circuited through a jumper cap, and the 1st and 2nd pins of the two-terminal jumper terminal 2.2 are short-circuited through a jumper cap, the drive board with adjustable switch state is in the normally closed output state; at this time, if the switch externally connected to the switch connector 3 is in the closed state (the normal state of the switch is closed), the DC+ connected to the 1st pin of the two-terminal jumper terminal 2.2, after passing through the current-limiting resistor R1, is then connected to the 3rd pin (ground GND) of the three-terminal jumper terminal 2.1 through the closed switch. At this time, the gate of the N-channel MOS field-effect transistor is at a low level, and the N-channel MOS field-effect transistor is in the off state, and no current passes through the high-power electrical equipment externally connected to the output connector 5; when the switch externally connected to the switch connector 3 is in the open state (for example, when a person sits on the car heating seat and makes the switch open), the DC+ connected to the 1st pin of the two-terminal jumper terminal 2.2 passes through the current-limiting resistor R1, the voltage-dividing resistor R2, and the voltage-dividing resistor R3 to the ground GND. At this time, the gate of the N-channel MOS field-effect transistor is at a high level, and the N-channel MOS field-effect transistor is in the on state, and the high-power electrical equipment externally connected to the output connector 5 has current passing through and is in the working state. Embodiment 2:

[0025] See the attached Figure 3 of the specification: In this embodiment, two N-channel MOS field-effect transistors are connected in parallel in the drive circuit 1 to increase the driving power of the drive board; in this embodiment, the drive circuit 1 is also provided with a status indicating light-emitting diode LED. The status indicating light-emitting diode LED is connected in series with a current-limiting resistor R4. The current-limiting resistor R4 and the status indicating light-emitting diode LED are connected in series between the gate of the N-channel MOS field-effect transistor and the ground GND; when the N-channel MOS field-effect transistor is in the on state (the gate of the N-channel MOS field-effect transistor is at a high level), the status indicating light-emitting diode LED will emit red (or green) light, indicating that the drive board is in the working state. Embodiment 3:

[0026] See the attached Figure 4 of the specification: In this embodiment, a drive board status output terminal 6 is also provided. One of the pins of the drive board status output terminal 6 is grounded GND, and the other pin is connected to the common connection point of the resistors R1 and R2 and the 2nd pin of the switch connector 3; the drive board status output terminal 6 can be externally connected to other devices, and the working state of the drive board can be detected by detecting the gate level of the N-channel MOS field-effect transistor.

[0027] The parts not detailed in the present invention are the prior art.

Claims

1. A driver board with adjustable switch state, used for controlling the turning on or off of the power supply of a high-power electrical device by a small switch signal; comprising a drive circuit (1), a switch state jump terminal (2), a switch connector CN1 (3), a power connector CN2 (4), and an output connector CN3 (5); the switch connector CN1 (3) is connected to the drive circuit (1) via the switch state jump terminal (2); the drive circuit (1) is electrically connected to the power connector CN2 (4) and the output connector CN3 (5) respectively; when the driver board with adjustable switch state is used, the switch connector CN1 (3) is externally connected to a switch or a sensor, the power connector CN2 (4) is externally connected to a power supply, and the output connector CN3 (5) is externally connected to a high-power electrical device; Its characteristics are: The switch state jumper terminal (2) comprises a three-terminal jumper terminal P1 (2.1), a two-terminal jumper terminal P2 (2.2), and a current limiting resistor R1; when the short-circuit state of the three-terminal jumper terminal P1 (2.1) and the two-terminal jumper terminal P2 (2.2) is changed, the drive board switches between a normally open output state and a normally closed output state.

2. A driving board with adjustable switch state according to claim 1, characterized in that: The driving circuit (1) comprises an N-channel MOS field effect transistor, voltage dividing resistors R2 and R3; the voltage dividing resistors R2 and R3 are connected in series between two-end jumper terminals P2 (2.2), pin 2 of a switch connector CN1 (3) and a ground GND; a gate G of the N-channel MOS field effect transistor is connected to a common connection point of the voltage dividing resistors R2 and R3, a drain D is connected to pin 1 of an output connector CN3 (5), and a source S is connected to the ground GND.

3. A driving board with adjustable switch state according to claim 2, characterized in that: In the driving circuit (1), two N-channel MOS field effect transistors are arranged in parallel.

4. A driving board with adjustable switch state according to claim 2, characterized in that: The driving circuit (1) is also provided with a status indicating light emitting diode LED, the status indicating light emitting diode LED is connected in series with a current limiting resistor R4, and the current limiting resistor R4 and the status indicating light emitting diode LED are connected in series between the gate of the N-channel MOS field effect transistor and the ground GND.

5. The driving board with adjustable switch state according to claim 2, characterized in that: Pin 2 of the output connector CN3 (5) is connected to pin 1 of the power connector CN2 (4), and pin 2 of the power connector CN2 (4) is grounded GND.

6. The driving board with adjustable switch state according to claim 1, characterized in that: It also includes a drive board state output terminal P3 (6), one of the pins of the drive board state output terminal P3 (6) is grounded GND, and the other pin is connected to the common connection point of the resistors R1 and R2 and the 2nd pin of the switch connector CN1 (3).

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