Multi-output control circuit and device

Abstract

The invention discloses a multipath output control circuit and device, and relates to the technical field of automobile circuit output, the multipath output control circuit comprises a first pull-up power supply control circuit and a multipath controlled power supply output circuit, the first pull-up power supply control circuit is connected with a controller, and the multipath controlled power supply output circuit is connected with the controller. Each path of controlled power supply output circuit is connected with the first pull-up power supply control circuit, an RC circuit is arranged in each path of controlled power supply output circuit, the time constants of the RC circuits are different, and when the controller controls the first pull-up power supply control circuit to be switched on, the time constants of the RC circuits are different. The multi-path controlled power supply output circuit outputs control signals to a post-stage circuit according to a preset sequence, the first pull-up power supply control circuit can control the multi-path controlled power supply output circuit at the same time only through connection of one interface of the controller, hardware resources and the number of pins of the controller are saved, and the complexity and the manufacturing cost of the circuit are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile circuit output, and in particular to a multi-channel output control circuit and device. Background Art

[0002] Timing output means that the controller outputs a specific signal or performs a specific operation at a specific time point or time period according to program instructions or external signals. This process ensures that the system can work in a predetermined time sequence, thereby realizing automatic control.

[0003] In the prior art, the timing control of the output circuit needs to occupy multiple output interfaces of the controller, which occupies the hardware resources and pin count of the controller, and increases the complexity of the circuit and the manufacturing cost. Summary of the invention

[0004] The embodiments of the present invention provide a multi-channel output control circuit and device to solve the technical problem that the timing control of the existing output circuit in the related art needs to occupy multiple output interfaces of the controller, occupying the hardware resources and pin number of the controller, and increasing the complexity of the circuit and the manufacturing cost.

[0005] In a first aspect, a multi-output control circuit is provided, comprising:

[0006] A first pull-up power supply control circuit, wherein the first pull-up power supply control circuit is connected to the controller;

[0007] A plurality of controlled power output circuits, each of which is connected to the first pull-up power control circuit, each of which is provided with an RC circuit, and each of which has a different time constant;

[0008] When the controller controls the first pull-up power control circuit to be turned on, the multi-channel controlled power output circuit outputs control signals to the subsequent circuit in a preset sequence.

[0009] In some embodiments, the first pull-up power control circuit includes:

[0010] The third resistor R3, the fourth resistor R4, the second transistor Q2, the second resistor R2, the first transistor Q1, and the first resistor R1, the first end of the third resistor R3 is connected to the vehicle connector and the controller respectively, the second end of the third resistor R3 is connected to the base of the second transistor Q2, the first end of the fourth resistor R4 is connected to the base of the second transistor Q2, the second end of the fourth resistor R4 is grounded, the emitter of the second transistor Q2 is grounded, the collector of the second transistor Q2 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is connected to the first power supply, the collector of the first transistor Q1 is connected to the multi-channel controlled power supply output circuit, the first end of the first resistor R1 is connected to the base of the first transistor Q1 and the second end of the second resistor R2, and the second end of the first resistor R1 is connected to the emitter of the first transistor Q1 and the first power supply.

[0011] In some embodiments, the first pull-up power supply control circuit further includes:

[0012] a first diode D1A, wherein an anode of the first diode D1A is connected to the vehicle connector, and a cathode of the first diode D1A is connected to a first end of the third resistor R3;

[0013] A second diode D1B, wherein an anode of the second diode D1B is connected to the controller, and a cathode of the second diode D1B is connected to a first end of the third resistor R3.

[0014] In some embodiments, the first controlled power output circuit includes:

[0015] A fifth resistor R5, a second capacitor C2, and a sixth resistor R6, wherein the first end of the fifth resistor R5 is connected to the collector of the first transistor Q1, the second end of the fifth resistor R5 is the output end, the first end of the second capacitor C2 and the first end of the sixth resistor R6 are both connected to the second end of the fifth resistor R5, and the second end of the second capacitor C2 and the second end of the sixth resistor R6 are both grounded.

[0016] In some embodiments, the second controlled power output circuit includes:

[0017] A seventh resistor R7, a third capacitor C3, an eighth resistor R8, a third triode Q3, a ninth resistor R9, and a tenth resistor R10, wherein a first end of the seventh resistor R7 is connected to the collector of the first triode Q1, a second end of the seventh resistor R7 is connected to a first end of the third capacitor C3, a first end of the eighth resistor R8, and a base of the third triode Q3, a second end of the third capacitor C3, a second end of the eighth resistor R8, and an emitter of the third triode Q3 are all grounded, a collector of the third triode Q3 is connected to a first end of the ninth resistor R9, and a first end of the tenth resistor R10, a second end of the ninth resistor R9 is connected to the first power supply, and a second end of the tenth resistor R10 is an output end.

[0018] In some embodiments, the third controlled power output circuit includes:

[0019] an eleventh resistor R11, a fourth capacitor C4, a twelfth resistor R12, a fourth triode Q4, a thirteenth resistor R13, a fourteenth resistor R14, and a field effect transistor T1; a first end of the eleventh resistor R11 is connected to the collector of the first triode Q1; a second end of the eleventh resistor R11 is connected to the first end of the fourth capacitor C4, the first end of the twelfth resistor R12, and the base of the fourth triode Q4; a second end of the fourth capacitor C4, a second end of the twelfth resistor R12, and an emitter of the fourth triode Q4 are all grounded; a collector of the fourth triode Q4 is connected to the first end of the thirteenth resistor R13; a second end of the thirteenth resistor R13 is connected to the first end of the fourteenth resistor R14 and the gate of the field effect transistor T1; a second end of the fourteenth resistor R14 is connected to the second power supply and the drain of the field effect transistor T1; and a source of the field effect transistor T1 is an output end.

[0020] In some embodiments, the multi-output control circuit further includes:

[0021] A second pull-up power supply control circuit and a sampling circuit, wherein the second pull-up power supply control circuit is connected to the controller, and the sampling circuit is connected to the vehicle connector and the second pull-up power supply control circuit, and the sampling circuit is used to collect output signals of the vehicle connector and the second pull-up power supply control circuit and control the subsequent circuit to light up the alarm icon.

[0022] In some embodiments, the second pull-up power control circuit includes:

[0023] A seventeenth resistor R17, a sixth transistor Q6, an eighteenth resistor R18, a sixteenth resistor R16, a fifth transistor Q5, and a fifteenth resistor R15, wherein a first end of the seventeenth resistor R17 is connected to the controller, a second end of the seventeenth resistor R17 is connected to the base of the sixth transistor Q6, the base of the sixth transistor Q6 is also connected to the first end of the eighteenth resistor R18, an emitter of the sixth transistor Q6 and a second end of the eighteenth resistor R18 are both grounded, a collector of the sixth transistor Q6 is connected to the first end of the sixteenth resistor R16, a second end of the sixteenth resistor R16 is connected to the base of the fifth transistor Q5 and a first end of the fifteenth resistor R15, a second end of the fifteenth resistor R15 and an emitter of the fifth transistor Q5 are both connected to a battery or a car ignition switch, and a collector of the fifth transistor Q5 is connected to the sampling circuit.

[0024] In some embodiments, the sampling circuit includes:

[0025] The twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the seventh capacitor C7, and the sixth diode D6, the first end of the twentieth resistor R20 is connected to the collector of the fifth transistor Q5, the second end of the twentieth resistor R20 is connected to the first end of the twenty-first resistor R21 and the first end of the twenty-second resistor R22, the second end of the twenty-first resistor R21 is grounded, the second end of the twenty-second resistor R22 is connected to the subsequent circuit, the second end of the twenty-second resistor R22 is also connected to the first end of the seventh capacitor C7 and the positive electrode of the sixth diode D6, the second end of the seventh capacitor C7 is grounded, and the cathode of the sixth diode D6 is connected to the first power supply.

[0026] In a second aspect, a multi-channel output control device is provided, comprising the multi-channel output control circuit mentioned above.

[0027] The beneficial effects brought about by the technical solution provided by the present invention include:

[0028] An embodiment of the present invention provides a multi-channel output control circuit and device, wherein the multi-channel output control circuit comprises: a first pull-up power supply control circuit and a plurality of controlled power supply output circuits, wherein the first pull-up power supply control circuit is connected to a controller, and each of the controlled power supply output circuits is connected to the first pull-up power supply control circuit, and each of the controlled power supply output circuits is provided with an RC circuit, and the time constant of each RC circuit is different, and when the controller controls the first pull-up power supply control circuit to be turned on, the plurality of controlled power supply output circuits output control signals to a subsequent circuit in a preset sequence, and the first pull-up power supply control circuit only needs to be connected to one interface of the controller to simultaneously control the plurality of controlled power supply output circuits, and the output sequence of each controlled power supply output circuit is adjusted by the RC circuit, thereby saving the hardware resources and the number of pins of the controller, and reducing the complexity and manufacturing cost of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A block diagram of a multi-output control circuit provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a multi-output control circuit provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present invention provides a multi-output control circuit and device, which can solve the technical problem in the related art that the timing control of the existing output circuit needs to occupy multiple output interfaces of the controller, occupying the hardware resources and pin number of the controller, and increasing the complexity of the circuit and the manufacturing cost.

[0034] Figure 1An embodiment of the present invention provides a multi-output control circuit, comprising: a first pull-up power supply control circuit and multiple controlled power supply output circuits, wherein the first pull-up power supply control circuit is connected to a controller, and each of the controlled power supply output circuits is connected to the first pull-up power supply control circuit, and each of the controlled power supply output circuits is provided with an RC circuit, and the time constant of each RC circuit is different, and when the controller controls the first pull-up power supply control circuit to be turned on, the multiple controlled power supply output circuits output control signals to the subsequent circuits in a preset sequence.

[0035] The multi-channel output control circuit of the embodiment of the present invention is provided with a first pull-up power supply control circuit and a plurality of controlled power supply output circuits, wherein the first pull-up power supply control circuit is connected to the controller, and each of the controlled power supply output circuits is connected to the first pull-up power supply control circuit, and each of the controlled power supply output circuits is provided with an RC circuit, and the time constant of each RC circuit is different, and when the controller controls the first pull-up power supply control circuit to be turned on, the plurality of controlled power supply output circuits output control signals to the subsequent circuits in a preset sequence, and the first pull-up power supply control circuit only needs to be connected to one interface of the controller to simultaneously control the plurality of controlled power supply output circuits, and the output sequence of each controlled power supply output circuit is adjusted by the RC circuit, thereby saving the hardware resources and the number of pins of the controller, and reducing the complexity and manufacturing cost of the circuit.

[0036] As an optional implementation, in an embodiment of the invention, see Figure 2As shown, the first pull-up power supply control circuit includes: a third resistor R3, a fourth resistor R4, a second transistor Q2, a second resistor R2, a first transistor Q1, and a first resistor R1. The first end of the third resistor R3 is connected to the vehicle connector and the controller respectively, the second end of the third resistor R3 is connected to the base of the second transistor Q2, the first end of the fourth resistor R4 is connected to the base of the second transistor Q2, the second end of the fourth resistor R4 is grounded, the emitter of the second transistor Q2 is grounded, the collector of the second transistor Q2 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is connected to the first power supply, the collector of the first transistor Q1 is connected to the multi-channel controlled power supply output circuit, the first end of the first resistor R1 is connected to the base of the first transistor Q1 and the second end of the second resistor R2, the second end of the first resistor R1 is connected to the first transistor The emitter of Q1 is connected to the first power supply, the first end of the capacitor C1 is connected to the base of the second transistor Q2, and the second end of the capacitor C1 is grounded. The first pull-up power supply control circuit can also be connected to the vehicle connector. The first pull-up power supply control circuit only needs to be connected to the vehicle connector or an interface of the controller to simultaneously control multiple controlled power supply output circuits. When the vehicle connector IGN+ is powered on or the GPIO pin of the controller outputs a high level PWR, the second transistor Q2 and the first transistor Q1 are turned on, and the first power supply VCC is transmitted to the electrical network V_UP1 to obtain power. Multiple controlled power supply output circuits simultaneously obtain a common pull-up power supply V_UP1, that is, power supply VCC, and then the multiple controlled power supply output circuits output control signals to the subsequent circuits in a preset sequence. The third resistor R3, the second resistor R2 and the first resistor R1 are all voltage divider resistors used to protect the circuit. The fourth resistor R4 is connected in parallel with the capacitor C1 to reduce the high-frequency signal impedance and improve the circuit response speed.

[0037] As an optional implementation, in an embodiment of the invention, see Figure 2 As shown, the first pull-up power supply control circuit also includes: a first diode D1A and a second diode D1B, the anode of the first diode D1A is connected to the vehicle connector, the cathode of the first diode D1A is connected to the first end of the third resistor R3, the anode of the second diode D1B is connected to the controller, the cathode of the second diode D1B is connected to the first end of the third resistor R3, the first diode D1A and the second diode D1B are anti-reverse diodes, which are used to effectively prevent the current from flowing in the reverse direction, protect other components in the circuit from damage, and improve the stability and reliability of the circuit.

[0038] As an optional implementation, in an embodiment of the invention, see Figure 2 As shown, the first controlled power output circuit includes: a fifth resistor R5, a second capacitor C2, and a sixth resistor R6. The first end of the fifth resistor R5 is connected to the collector of the first transistor Q1, and the second end of the fifth resistor R5 is an output end. The first end of the second capacitor C2 and the first end of the sixth resistor R6 are both connected to the second end of the fifth resistor R5. The second end of the second capacitor C2 and the second end of the sixth resistor R6 are both grounded. When V_UP1 is powered, the first power supply VCC is divided by the fifth resistor R5 and the sixth resistor R6 to the output end HighLvEn of the first controlled power output circuit. Then the high voltage connected at the rear end Enable an effective power chip or module such as a power management integrated circuit to be turned on. When the second transistor Q2 and the first transistor Q1 are disconnected, V_UP1 is not energized, and the first controlled power output circuit has no output; the fifth resistor R5 and the second capacitor C2 are an RC circuit of the first controlled power output circuit. By adjusting the resistance value of the fifth resistor R5 and the capacitance value of the second capacitor C2, the time constant τ=RC value of the first controlled power output circuit can be adjusted, and the order of its output can be adjusted; the second diode D2 is provided between the fifth resistor R5 and the collector of the first transistor Q1, and is an anti-reverse diode for effectively preventing current from flowing in the reverse direction.

[0039] As an optional implementation, in an embodiment of the invention, see Figure 2As shown, the second controlled power output circuit includes: a seventh resistor R7, a third capacitor C3, an eighth resistor R8, a third triode Q3, a ninth resistor R9, and a tenth resistor R10. The first end of the seventh resistor R7 is connected to the collector of the first triode Q1, the second end of the seventh resistor R7 is connected to the first end of the third capacitor C3, the first end of the eighth resistor R8, and the base of the third triode Q3. The second end of the third capacitor C3, the second end of the eighth resistor R8, and the emitter of the third triode Q3 are all grounded. The collector of the third triode Q3 is connected to the first end of the ninth resistor R9 and the first end of the tenth resistor R10. The second end of the ninth resistor R9 is connected to the first power source. The second end of the tenth resistor R10 is an output end. When V_UP1 is powered, the first power source VCC passes through the first triode Q1 to the base of the third triode Q3 and turns on the third triode Q3. The second The output terminal LowLvEn of the controlled power output circuit of the second path outputs a low level signal, and the power chip or module with effective low enable turns off its low power consumption mode to ensure that it works in a normal output power state. The first power supply VCC supplies power to the subsequent circuit such as the voltage conversion circuit through the ninth resistor R9 and the tenth resistor R10. When the second transistor Q2 and the first transistor Q1 are disconnected, V_UP1 cannot be powered, then the third transistor Q3 is disconnected, and the second controlled power output circuit has no output; the seventh resistor R7 and the third capacitor C3 are the RC circuit of the second controlled power output circuit. By adjusting the resistance value of the seventh resistor R7 and the capacitance value of the third capacitor C3, the time constant τ=RC value of the second controlled power output circuit can be adjusted, and the order of its output can be adjusted. The third diode D3 is arranged between the seventh resistor R7 and the collector of the first transistor Q1, and is an anti-reverse diode for effectively preventing the current from flowing in the reverse direction.

[0040] As an optional implementation, in an embodiment of the invention, see Figure 2As shown, the third controlled power output circuit includes: an eleventh resistor R11, a fourth capacitor C4, a twelfth resistor R12, a fourth triode Q4, a thirteenth resistor R13, a fourteenth resistor R14, and a field effect transistor T1. The first end of the eleventh resistor R11 is connected to the collector of the first triode Q1, the second end of the eleventh resistor R11 is connected to the first end of the fourth capacitor C4, the first end of the twelfth resistor R12, and the base of the fourth triode Q4, the second end of the fourth capacitor C4, the second end of the twelfth resistor R12, and the emitter of the fourth triode Q4 are all grounded, the collector of the fourth triode Q4 is connected to the first end of the thirteenth resistor R13, the second end of the thirteenth resistor R13 is connected to the first end of the fourteenth resistor R14 and the gate of the field effect transistor T1, the second end of the fourteenth resistor R14 is connected to the second power supply and the drain of the field effect transistor T1, the source of the field effect transistor T1 is the output end, and when When V_UP1 is powered, the first power source VCC is output to the base of the fourth transistor Q4 through the first transistor Q1, and the fourth transistor Q4 is turned on, and the field effect transistor T1 is turned on accordingly, and the second power source PWR outputs PWR_Out through the field effect transistor T1 and supplies power to the subsequent circuit such as the low voltage difference linear regulator. When the second transistor Q2 and the first transistor Q1 are disconnected, V_UP1 is not powered, and the fourth transistor Q4 is disconnected, and the third controlled power output circuit has no output; the eleventh resistor R11 and the fourth capacitor C4 are the RC circuit of the third controlled power output circuit. By adjusting the resistance value of the eleventh resistor R11 and the capacitance value of the fourth capacitor C4, the time constant τ=RC value of the third controlled power output circuit can be adjusted, and the order of its output can be adjusted. The fourth diode D4 is provided between the eleventh resistor R11 and the collector of the first transistor Q1, and is an anti-reverse diode, which is used to effectively prevent the current from flowing in reverse.

[0041] As an optional implementation, in an embodiment of the invention, see Figure 1 and Figure 2As shown, the multi-channel output control circuit also includes: a second pull-up power supply control circuit and a sampling circuit, the second pull-up power supply control circuit is connected to the controller, the sampling circuit is connected to the vehicle connector and the second pull-up power supply control circuit, the sampling circuit is used to collect the output signals of the vehicle connector and the second pull-up power supply control circuit and control the subsequent circuit to light up the alarm icon, the second pull-up power supply control circuit is connected to the controller, the system first reads the EOL value calibrated when the vehicle is offline and then determines the vehicle model, the controller controls the electrical network SwSignal_SltCtrl output of the second pull-up power supply control circuit to be set to 0 or 1 according to different vehicle models, and further controls whether the pull-up voltage V_up2 is energized, and the sampling circuit controls the vehicle connector SwitchS according to different vehicle models. The high and low level valid signals output by ignal_H / L are adaptively collected and judged, that is, if the vehicle model is A, the output of SwitchSignal_H / L of its vehicle connector is defined as high level valid, and when the controller controls the electrical network SwSignal_SltCtrl of the second pull-up power supply control circuit to output 0 instead of 1, the alarm icon or pop-up window prompt of the subsequent circuit is lit; if the vehicle model is A, the output of SwitchSignal_H / L of its vehicle connector is invalid when it is low level or suspended, and the alarm icon or pop-up window prompt of the subsequent circuit is extinguished. There is no need to set multiple sampling circuits corresponding to different switching quantities of different vehicle models. The purpose of one circuit matching multiple vehicle models is achieved through the second pull-up power supply control circuit, the number of interfaces and pins used in the controller is reduced, and the production cost is reduced.

[0042] As an optional implementation, in an embodiment of the invention, see Figure 2As shown, the second pull-up power supply control circuit includes: a seventeenth resistor R17, a sixth transistor Q6, an eighteenth resistor R18, a sixteenth resistor R16, a fifth transistor Q5, and a fifteenth resistor R15, wherein a first end of the seventeenth resistor R17 is connected to the controller, a second end of the seventeenth resistor R17 is connected to the base of the sixth transistor Q6, the base of the sixth transistor Q6 is also connected to the first end of the eighteenth resistor R18, an emitter of the sixth transistor Q6 and a second end of the eighteenth resistor R18 are both grounded, a collector of the sixth transistor Q6 is connected to the first end of the sixteenth resistor R16, a second end of the sixteenth resistor R16 is connected to the base of the fifth transistor Q5 and the first end of the fifteenth resistor R15, a second end of the fifteenth resistor R15, and a base of the fifth transistor Q5. The emitter of the transistor Q5 is connected to the battery or the car ignition switch, and the collector of the fifth transistor Q5 is connected to the sampling circuit. According to the predefined vehicle model calibration value, if the vehicle model is A, when the controller controls the electrical network SwSignal_SltCtrl of the second pull-up power control circuit to output 0 instead of 1, the sixth transistor Q6 and the fifth transistor Q5 are turned off, the battery VBat+ or the car ignition switch IGN+ is disconnected, and V_up2 shall not be electrically output as 0; if the vehicle model is B, when the controller controls the electrical network SwSignal_SltCtrl of the second pull-up power control circuit to output 1 instead of 0, the sixth transistor Q6 and the fifth transistor Q5 are turned on, the battery VBat+ or the car ignition switch IGN+ outputs V_up2 and the electrical output is 1.

[0043] As an optional implementation, in an embodiment of the invention, see Figure 2 As shown, the sampling circuit includes: a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a seventh capacitor C7, and a sixth diode D6. The first end of the twentieth resistor R20 is connected to the collector of the fifth triode Q5, the second end of the twentieth resistor R20 is connected to the first end of the twenty-first resistor R21 and the first end of the twenty-second resistor R22, the second end of the twenty-first resistor R21 is grounded, the second end of the twenty-second resistor R22 is connected to the post-stage circuit, the second end of the twenty-second resistor R22 is also connected to the first end of the seventh capacitor C7 and the positive electrode of the sixth diode D6, the second end of the seventh capacitor C7 is grounded, and the cathode of the sixth diode D6 is connected to the first power supply. In addition, a fifth diode D5 and a resistor R19 are provided between the first end of the twentieth resistor R20 and the collector of the fifth triode Q5. The fifth diode D5 is an anti-reverse diode for effectively preventing the current from flowing in reverse. The resistor R19 is a voltage divider resistor for protecting the circuit.

[0044] Specifically, if the vehicle type is A, the controller controls the electrical network SwSignal_SltCtrl of the second pull-up power control circuit to output 0 instead of 1, the battery VBat+ or the car ignition switch IGN+ is disconnected, and V_up2 shall not be electrically output to 0. The output of SwitchSignal_H / L of the vehicle connector is defined as high level valid. The output terminal SwitchSignal_H / L_AD of the sampling circuit outputs a valid high level signal, which lights up the alarm icon or pop-up window prompt of the subsequent circuit. When the output terminal SwitchSignal_H / L_AD of the sampling circuit outputs a low level or is suspended, the corresponding alarm icon is extinguished or the pop-up window is closed. Tip: If the vehicle type is B, the controller controls the electrical network SwSignal_SltCtrl of the second pull-up power control circuit to output 1 instead of 0, the battery VBat+ or the car ignition switch IGN+ output V_up2 is powered and output 1, and the output of SwitchSignal_H / L of the vehicle connector is defined as low level valid. The output end SwitchSignal_H / L_AD of the sampling circuit outputs a valid low level signal, which lights up the alarm icon or pop-up prompt of the subsequent circuit. When the output end SwitchSignal_H / L_AD of the sampling circuit outputs a high level signal, the corresponding alarm icon is extinguished or the pop-up prompt is closed.

[0045] An embodiment of the present invention also provides a multi-output control device, including the aforementioned multi-output control circuit, wherein the multi-output control circuit includes a first pull-up power supply control circuit and multiple controlled power supply output circuits, the first pull-up power supply control circuit is connected to the controller, each of the controlled power supply output circuits is connected to the first pull-up power supply control circuit, each of the controlled power supply output circuits is provided with an RC circuit, and the time constant of each RC circuit is different, when the controller controls the first pull-up power supply control circuit to be turned on, the multiple controlled power supply output circuits output control signals to the subsequent circuits in a preset sequence.

[0046] The multi-channel output control device of the embodiment of the present invention has a multi-channel output control circuit provided with a first pull-up power supply control circuit and a plurality of controlled power supply output circuits, wherein the first pull-up power supply control circuit is connected to the controller, and each of the controlled power supply output circuits is connected to the first pull-up power supply control circuit, and each of the controlled power supply output circuits is provided with an RC circuit, and the time constant of each RC circuit is different, and when the controller controls the first pull-up power supply control circuit to be turned on, the plurality of controlled power supply output circuits output control signals to the subsequent circuit in a preset sequence, and the first pull-up power supply control circuit only needs to be connected to one interface of the controller to simultaneously control the plurality of controlled power supply output circuits, and the output sequence of each controlled power supply output circuit is adjusted by the RC circuit, thereby saving the hardware resources and the number of pins of the controller, and reducing the complexity and manufacturing cost of the circuit.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A multi-output control circuit, characterized in that: include: A first pull-up power supply control circuit, wherein the first pull-up power supply control circuit is connected to the controller; A plurality of controlled power output circuits, each of which is connected to the first pull-up power control circuit, each of which is provided with an RC circuit, and each of which has a different time constant; When the controller controls the first pull-up power control circuit to be turned on, the multi-channel controlled power output circuit outputs control signals to the subsequent circuit in a preset sequence.

2. The multi-output control circuit according to claim 1, characterized in that: The first pull-up power supply control circuit comprises: The third resistor R3, the fourth resistor R4, the second transistor Q2, the second resistor R2, the first transistor Q1, and the first resistor R1, the first end of the third resistor R3 is connected to the vehicle connector and the controller respectively, the second end of the third resistor R3 is connected to the base of the second transistor Q2, the first end of the fourth resistor R4 is connected to the base of the second transistor Q2, the second end of the fourth resistor R4 is grounded, the emitter of the second transistor Q2 is grounded, the collector of the second transistor Q2 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is connected to the first power supply, the collector of the first transistor Q1 is connected to the multi-channel controlled power supply output circuit, the first end of the first resistor R1 is connected to the base of the first transistor Q1 and the second end of the second resistor R2, and the second end of the first resistor R1 is connected to the emitter of the first transistor Q1 and the first power supply.

3. The multi-output control circuit according to claim 2, characterized in that: The first pull-up power supply control circuit further includes: a first diode D1A, wherein an anode of the first diode D1A is connected to the vehicle connector, and a cathode of the first diode D1A is connected to a first end of the third resistor R3; A second diode D1B, wherein an anode of the second diode D1B is connected to the controller, and a cathode of the second diode D1B is connected to a first end of the third resistor R3.

4. The multi-output control circuit according to claim 2, characterized in that: The first controlled power output circuit comprises: A fifth resistor R5, a second capacitor C2, and a sixth resistor R6, wherein the first end of the fifth resistor R5 is connected to the collector of the first transistor Q1, the second end of the fifth resistor R5 is the output end, the first end of the second capacitor C2 and the first end of the sixth resistor R6 are both connected to the second end of the fifth resistor R5, and the second end of the second capacitor C2 and the second end of the sixth resistor R6 are both grounded.

5. The multi-output control circuit according to claim 2, characterized in that: The second controlled power output circuit comprises: A seventh resistor R7, a third capacitor C3, an eighth resistor R8, a third triode Q3, a ninth resistor R9, and a tenth resistor R10, wherein a first end of the seventh resistor R7 is connected to the collector of the first triode Q1, a second end of the seventh resistor R7 is connected to a first end of the third capacitor C3, a first end of the eighth resistor R8, and a base of the third triode Q3, a second end of the third capacitor C3, a second end of the eighth resistor R8, and an emitter of the third triode Q3 are all grounded, a collector of the third triode Q3 is connected to a first end of the ninth resistor R9, and a first end of the tenth resistor R10, a second end of the ninth resistor R9 is connected to the first power supply, and a second end of the tenth resistor R10 is an output end.

6. The multi-output control circuit according to claim 2, characterized in that: The third controlled power output circuit comprises: an eleventh resistor R11, a fourth capacitor C4, a twelfth resistor R12, a fourth triode Q4, a thirteenth resistor R13, a fourteenth resistor R14, and a field effect transistor T1; a first end of the eleventh resistor R11 is connected to the collector of the first triode Q1; a second end of the eleventh resistor R11 is connected to the first end of the fourth capacitor C4, the first end of the twelfth resistor R12, and the base of the fourth triode Q4; a second end of the fourth capacitor C4, a second end of the twelfth resistor R12, and an emitter of the fourth triode Q4 are all grounded; a collector of the fourth triode Q4 is connected to the first end of the thirteenth resistor R13; a second end of the thirteenth resistor R13 is connected to the first end of the fourteenth resistor R14 and the gate of the field effect transistor T1; a second end of the fourteenth resistor R14 is connected to the second power supply and the drain of the field effect transistor T1; and a source of the field effect transistor T1 is an output end.

7. The multi-output control circuit according to claim 1, characterized in that: Also includes: A second pull-up power supply control circuit and a sampling circuit, wherein the second pull-up power supply control circuit is connected to the controller, and the sampling circuit is connected to the vehicle connector and the second pull-up power supply control circuit, and the sampling circuit is used to collect output signals of the vehicle connector and the second pull-up power supply control circuit and control the subsequent circuit to light up the alarm icon.

8. The multi-output control circuit according to claim 7, characterized in that: The second pull-up power supply control circuit comprises: A seventeenth resistor R17, a sixth transistor Q6, an eighteenth resistor R18, a sixteenth resistor R16, a fifth transistor Q5, and a fifteenth resistor R15, wherein a first end of the seventeenth resistor R17 is connected to the controller, a second end of the seventeenth resistor R17 is connected to the base of the sixth transistor Q6, the base of the sixth transistor Q6 is also connected to the first end of the eighteenth resistor R18, an emitter of the sixth transistor Q6 and a second end of the eighteenth resistor R18 are both grounded, a collector of the sixth transistor Q6 is connected to the first end of the sixteenth resistor R16, a second end of the sixteenth resistor R16 is connected to the base of the fifth transistor Q5 and a first end of the fifteenth resistor R15, a second end of the fifteenth resistor R15 and an emitter of the fifth transistor Q5 are both connected to a battery or a car ignition switch, and a collector of the fifth transistor Q5 is connected to the sampling circuit.

9. The multi-output control circuit according to claim 8, characterized in that: The sampling circuit comprises: The twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the seventh capacitor C7, and the sixth diode D6, the first end of the twentieth resistor R20 is connected to the collector of the fifth transistor Q5, the second end of the twentieth resistor R20 is connected to the first end of the twenty-first resistor R21 and the first end of the twenty-second resistor R22, the second end of the twenty-first resistor R21 is grounded, the second end of the twenty-second resistor R22 is connected to the subsequent circuit, the second end of the twenty-second resistor R22 is also connected to the first end of the seventh capacitor C7 and the positive electrode of the sixth diode D6, the second end of the seventh capacitor C7 is grounded, and the cathode of the sixth diode D6 is connected to the first power supply.

10. A multi-output control device, characterized in that: A control circuit comprising the multiple outputs as described in any one of claims 1 to 9.

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