Awakening device for brake system, brake system and vehicle

Abstract

The utility model discloses an awakening device for a brake system, the brake system and a vehicle, which are used for awakening a controller of the brake system in time to brake when a user operates a brake pedal of the vehicle. The wake-up device can comprise a pressure sensor and a wake-up circuit, wherein the pressure sensor is used for sensing a pressure value generated by a hydraulic unit of a brake system in the working process of a brake pedal and generating a corresponding analog signal based on the pressure value, and the wake-up circuit is provided with a first port and a second port; a first port of the wake-up circuit can be electrically connected with an output port of a pressure sensor, and a second port of the wake-up circuit can be electrically connected with a controller of a braking system so as to send a wake-up signal generated based on the analog signal to the controller to wake up the controller for braking.

Description

Technical Field

[0001] The utility model relates to the field of vehicle brake control, in particular to a wake-up device for a brake system, a brake system and a vehicle. Background Art

[0002] The vehicle's braking system is a key component of vehicle safety. It can not only help the driver control the vehicle to slow down and stop, but also assist the driver in controlling the vehicle to stay on the desired driving path when turning or avoiding obstacles, thus playing a vital role in the operation of the vehicle. At present, the driver often needs to step on the brake pedal when controlling the vehicle to brake. When the pre-set linear position sensor detects that the position of the brake pedal meets the brake wake-up condition, it can wake up the controller of the braking system to control the vehicle to brake. With the continuous improvement of people's requirements for vehicle performance and cost-effectiveness, how to simplify the brake wake-up structure and reduce the brake wake-up cost while ensuring timely wake-up of the vehicle for braking has become an urgent problem to be solved. Utility Model Content

[0003] One of the purposes of the utility model is to provide a brake system awakening device, a brake system and a vehicle, which, on the basis of being able to ensure timely awakening of the vehicle for braking, also have the advantages of simple structure, small size, low cost, easy promotion and the like.

[0004] In order to achieve the above object, the utility model proposes a wake-up device for a brake system, the wake-up device comprising:

[0005] A pressure sensor, which is used to sense the pressure value generated by the hydraulic unit of the braking system when the brake pedal of the braking system is in operation, and generate a corresponding analog signal based on the pressure value;

[0006] A wake-up circuit has a first port and a second port, wherein the first port is electrically connected to the output port of the pressure sensor, and the second port is electrically connected to the controller of the braking system, so as to send a wake-up signal generated based on the analog signal to the controller to wake up the controller for braking.

[0007] Further, in some embodiments of the present utility model, when the analog signal is a voltage signal having a positive correlation with the pressure value generated by the hydraulic unit, the wake-up circuit includes: a first transistor of NPN type, a second transistor of PNP type and a first power supply;

[0008] The output port of the pressure sensor is electrically connected to the base of the first transistor, the emitter of the first transistor is electrically connected to the ground, the collector of the first transistor is electrically connected to the base of the second transistor, the emitter of the second transistor is electrically connected to the output port of the first power supply, and the collector of the second transistor is electrically connected to the signal receiving port of the controller;

[0009] When the analog signal received through the base of the first transistor is greater than or equal to a first threshold, the wake-up circuit sends the wake-up signal to the controller through the collector of the second transistor.

[0010] Further, in some embodiments of the present utility model, the wake-up circuit further includes: a first resistor and a second resistor;

[0011] Wherein, the output port of the pressure sensor is electrically connected to the base of the first transistor via the first resistor;

[0012] The third port of the second resistor is electrically connected to the base of the first transistor, and the fourth port of the second resistor is electrically connected to the ground.

[0013] Further, in some embodiments of the present utility model, when the analog signal is a voltage signal having a negative correlation with the pressure value generated by the hydraulic unit, the wake-up circuit includes: a PMOS transistor, a third NPN transistor, a fourth PNP transistor, a second power supply and a third power supply;

[0014] The output port of the pressure sensor is electrically connected to the gate of the PMOS transistor, the source of the PMOS transistor is electrically connected to the output port of the second power supply, the drain of the PMOS transistor is electrically connected to the base of the third transistor, the emitter of the third transistor is electrically connected to the ground, the collector of the third transistor is electrically connected to the base of the fourth transistor, the emitter of the fourth transistor is electrically connected to the output port of the third power supply, and the collector of the fourth transistor is electrically connected to the signal receiving port of the controller;

[0015] When the analog signal received through the gate of the PMOS transistor is less than or equal to a second threshold, the wake-up circuit sends the wake-up signal to the controller through the collector of the fourth transistor.

[0016] Further, in some embodiments of the present utility model, the wake-up circuit further includes: a third resistor and a fourth resistor;

[0017] Wherein, the output port of the pressure sensor is electrically connected to the gate of the PMOS transistor via the third resistor;

[0018] The fifth port of the fourth resistor is electrically connected to the gate of the PMOS transistor, and the sixth port of the fourth resistor is electrically connected to the source of the PMOS transistor.

[0019] Further, in some embodiments of the present utility model, the wake-up circuit further includes: a fifth transistor of NPN type and a fourth power supply;

[0020] The base of the fifth transistor is electrically connected to the output port of the fourth power supply, the emitter of the fifth transistor is electrically connected to the ground, and the collector of the fifth transistor is electrically connected to the emitter of the target transistor;

[0021] Wherein, the target transistor is a transistor whose collector in the wake-up circuit is electrically connected to the signal receiving port of the controller;

[0022] When the controller is in the awake state, the fourth power supply supplies power to the base of the fifth transistor through the output port of the fourth power supply, so that the fifth transistor is in the on state, and the target transistor is in the off state.

[0023] Further, in some embodiments of the present utility model, the wake-up device further includes: a fifth power supply and a low voltage dropout regulator;

[0024] The output port of the fifth power supply is electrically connected to the input port of the low-dropout voltage regulator, and the output port of the low-dropout voltage regulator is electrically connected to the power input port of the pressure sensor;

[0025] The low voltage dropout regulator is used to convert the voltage signal output by the fifth power supply into an operating voltage signal required by the pressure sensor.

[0026] Furthermore, in some embodiments of the present invention, in the above-mentioned wake-up device, the first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via a first wire, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via a second wire.

[0027] Further, in some embodiments of the present utility model, in the above-mentioned wake-up device, the wake-up circuit and the pressure sensor are both arranged at the integrated circuit board of the controller;

[0028] The first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via a first conductive circuit in the integrated circuit board, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via a second conductive circuit in the integrated circuit board.

[0029] Further, in some embodiments of the present utility model, in the above-mentioned wake-up device, the wake-up circuit is arranged at the first integrated circuit board of the controller, the pressure sensor is arranged at the second integrated circuit board, and a conductor connector is arranged between the first integrated circuit board and the second integrated circuit board;

[0030] The first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via the third conductive circuit in the first integrated circuit board, the conductor connector, and the fourth conductive circuit in the second integrated circuit board, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via the fifth conductive circuit in the first integrated circuit board.

[0031] Another object of the present utility model is to provide a braking system, which includes: a controller, a hydraulic unit and a brake pedal, and the braking system also includes the above-mentioned wake-up device.

[0032] Another object of the present invention is to provide a vehicle, wherein the vehicle comprises the above-mentioned braking system.

[0033] According to the wake-up device, brake system and vehicle for the braking system provided by the utility model, when the user operates the brake pedal of the braking system to brake, the pressure sensor at the hydraulic unit of the braking system can generate an analog signal for reflecting the pressure value generated by the hydraulic unit by the brake pedal during operation, and the wake-up circuit can generate and send a corresponding wake-up signal to the controller of the braking system based on the analog signal, which can not only wake up the controller in time to brake the vehicle, but also because the pressure sensor can output an analog signal, the wake-up circuit can generate a wake-up signal without the need to additionally set up a digital-to-analog conversion structure, so that it also has the advantages of simple structure, small size, low development cost, and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a vehicle in one embodiment of the utility model;

[0035] Figure 2 It is a structural schematic diagram of a wake-up circuit in one embodiment of the utility model;

[0036] Figure 3 It is a structural schematic diagram of a wake-up circuit in another embodiment of the utility model;

[0037] Figure 4 This is a schematic diagram of the structure of a wake-up circuit in another embodiment of the present utility model;

[0038] Figure 5The figure is a schematic diagram of the structure of a wake-up circuit in another embodiment of the present invention. DETAILED DESCRIPTION

[0039] The wake-up circuit, wake-up device, brake system and vehicle described in the present invention will be further explained and illustrated below in conjunction with the drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.

[0040] At present, in order to identify the driver's braking needs for the vehicle, a linear position sensor (LIPS) for detecting the position and stroke of the brake pedal is usually pre-installed in the vehicle, and the linear position sensor is configured with switching circuits, permanent magnets and other devices. When the linear position sensor reaches a threshold through detecting magnetic flux, that is, when the brake pedal is in a specified position, it can be combined with the switching circuit to send a wake-up signal to the controller of the braking system, so that the controller changes from a sleep state to a wake-up state to control the vehicle to brake.

[0041] However, since the linear position sensor is not only complex in structure and high in price, but also the output signal of some linear position sensors is a digital signal, it is also necessary to configure a corresponding digital-to-analog conversion module so that the switching circuit can combine the output signal of the linear position sensor to generate a wake-up signal for the controller of the braking system. This also easily makes the brake wake-up device complex in structure, large in size, and high in cost.

[0042] In order to solve the above problems, the utility model proposes a wake-up device for a braking system, a braking system and a vehicle.

[0043] Figure 1 The figure is a schematic structural diagram of a vehicle in a feasible implementation manner of the utility model.

[0044] In some embodiments of the present invention, Figure 1 As described above, a wake-up device for the brake system including a wake-up circuit 1 and a pressure sensor 2 may be provided at the vehicle.

[0045] The pressure sensor 2 can be used to sense the pressure value generated by the hydraulic unit 3 of the brake system when the brake pedal 4 of the brake system is working, and generate a corresponding analog signal based on the pressure value.

[0046] A wake-up circuit 1 may have a first port 11 and a second port 12, wherein the first port 11 may be electrically connected to the output port of the pressure sensor 2, and the second port 12 may be electrically connected to the controller 5 of the braking system, so as to send a wake-up signal generated based on the analog signal to the controller 5 to wake up the controller 5 for braking.

[0047] In the implementation of this specification, after the driver steps on the brake pedal 4 of the brake system, the driving rod between the brake pedal 4 and the hydraulic unit 3 of the brake system can convert the driver's force into hydraulic energy at the hydraulic unit, so that the pressure value in the hydraulic unit 3 increases. At this time, the pressure sensor 2 arranged at the hydraulic unit 3 can detect the pressure value generated by the hydraulic unit 3 by the brake pedal 4 during the working process, and then output an analog signal corresponding to the pressure value.

[0048] The pressure sensor 2 can also send the analog signal to the first port 11 of the wake-up circuit 1, and the wake-up circuit 1 can control whether to generate a wake-up signal based on the analog signal and its own hardware structure. If the wake-up circuit 1 generates a wake-up signal, the wake-up signal can be sent to the controller 5 through the second port 12; if the controller 5 is currently in a sleep state, the controller 5 can change from the sleep state to the wake-up state after receiving the wake-up signal to control the vehicle's braking system to brake, thereby meeting the user's braking needs.

[0049] Optionally, the controller 5 can be a controller installed in the braking system for controlling the braking system to perform braking, or the controller 5 can also be a computer control module (electronic control unit) in the vehicle that has the function of controlling the braking system to perform braking. Currently, it can also be other modules or devices that have the function of controlling the braking system to perform braking, and there is no specific limitation on this.

[0050] Optionally, the controller 5 may also have the function of controlling the vehicle's brake lights, and when the controller 5 receives a wake-up signal, in addition to controlling the vehicle to brake, it may also control the vehicle's brake lights to be in a working state (i.e., lit state), so that drivers of other vehicles can promptly identify that the vehicle needs to brake according to the state of the vehicle's brake lights; and when the controller 5 changes from a wake-up state to a sleep state, it may also control the brake lights to change from a lit state to an off state, so as to avoid interfering with drivers of other vehicles, which is beneficial to improving the safety of the vehicle's driving process.

[0051] The wake-up device for the braking system provided in the embodiments of the present specification controls whether to send a wake-up signal to the controller of the braking system according to the analog signal output by the pressure sensor by utilizing the wake-up circuit, so as to wake up the controller for braking. It can not only ensure that the vehicle is woken up in time for braking, but also because the pressure sensor can output analog signals, there is no need to set up an additional digital-to-analog conversion structure, so that it also has the advantages of simple structure, small size, low development cost, and easy promotion.

[0052] Optional, Figure 2Schematic diagram of the structure of the wake-up circuit in one embodiment of the present invention. In some embodiments of the present invention, when the analog signal is a voltage signal having a positive correlation with the pressure value generated by the hydraulic unit 3, the wake-up circuit 1 may include: a first NPN transistor 101, a second PNP transistor 102 and a first power supply 103.

[0053] The output port of the pressure sensor 2 can be electrically connected to the base of the first transistor 101, the emitter of the first transistor 101 can be electrically connected to the ground, the collector of the first transistor 101 can be electrically connected to the base of the second transistor 102, the emitter of the second transistor 102 can be electrically connected to the output port of the first power supply 103, and the collector of the second transistor 102 can be electrically connected to the signal receiving port of the controller 5.

[0054] The wake-up circuit 1 may send the wake-up signal to the controller 5 via the collector of the second transistor 102 when the analog signal received via the base of the first transistor 101 is greater than or equal to a first threshold.

[0055] In the implementation of this specification, the pressure value generated by the hydraulic unit 3 is often positively correlated with the stroke, opening, etc. generated by the user stepping on the brake pedal, that is, the greater the distance and opening of the user stepping on the brake pedal, the greater the pressure value generated by the hydraulic unit 3, and correspondingly, the greater the voltage value of the analog signal output by the pressure sensor 2.

[0056] Specifically, when the user steps on the brake pedal so that the pressure value generated by the hydraulic unit 3 reaches a preset value, the voltage value of the analog signal output by the pressure sensor 2 can reach a first threshold value. At this time, the first transistor 101 can be changed from an off state to an on state, and then the second transistor 102 can be changed from an off state to an on state. At this time, the electric energy provided by the first power supply 103 can flow to the controller 5 through the collector of the second transistor 102, so that the signal receiving port of the controller 5 receives a wake-up signal.

[0057] When the user steps on the brake pedal and the pressure value generated by the hydraulic unit 3 does not reach the preset value, the voltage value of the analog signal output by the pressure sensor 2 is usually less than the first threshold value. At this time, the first transistor 101 and the second transistor 102 will both remain in the cut-off state, so that the electric energy provided by the first power supply 103 cannot flow to the controller 5 through the collector of the second transistor 102, so that the signal receiving port of the controller 5 will not receive the wake-up signal.

[0058] Optionally, in some embodiments of the present utility model, the wake-up circuit 1 may further include: a first resistor and a second resistor. The output port of the pressure sensor 2 may be electrically connected to the base of the first transistor 101 via the first resistor; the third port of the second resistor may be electrically connected to the base of the first transistor 101, and the fourth port of the second resistor may be electrically connected to the ground.

[0059] In the implementation of this specification, in order to prevent the user from accidentally touching the brake pedal and causing braking, the first threshold value corresponding to the model signal output by the pressure sensor 2 is often determined according to actual needs. When the voltage value of the analog signal output by the pressure sensor 2 does not reach the first threshold value, it can be considered that the user accidentally touched the brake pedal, so there is no need to control the vehicle to brake, and when the voltage value of the analog signal output by the pressure sensor 2 is greater than or equal to the first threshold value, it can be considered that the user does not accidentally touch the brake pedal, so it is necessary to control the vehicle to brake.

[0060] In practical applications, since the conduction voltage of the transistor is usually 0.6-0.7V, the pressure values ​​that need to be detected when the analog signals output by different pressure sensors are above 0.7V are often different. Based on this, in order to enable the wake-up circuit 1 to accurately generate a wake-up signal when the pressure value generated by the hydraulic unit reaches a preset value (that is, the voltage value of the analog signal output by the pressure sensor reaches the first threshold), the first resistor and the second resistor can be set to divide the voltage and limit the current of the analog signal output by the pressure sensor 2, which is beneficial to improve the model selection range of the pressure sensor 2 and avoid excessive current in the circuit from breaking down the transistor, thereby ensuring the stable operation of the wake-up circuit 1.

[0061] Optional, Figure 3 1 is a schematic diagram of a wake-up circuit in another embodiment of the present invention. In some embodiments of the present invention, when the analog signal is a voltage signal having a negative correlation with the pressure value generated by the hydraulic unit 3, the wake-up circuit 1 may include: a PMOS transistor 104, a third NPN transistor 105, a fourth PNP transistor 106, a second power supply 107, and a third power supply 108.

[0062] The output port of the pressure sensor 2 can be electrically connected to the gate of the PMOS transistor 104, the source of the PMOS transistor 104 can be electrically connected to the output port of the second power supply 107, the drain of the PMOS transistor 104 can be electrically connected to the base of the third transistor 105, the emitter of the third transistor 105 can be electrically connected to the ground, the collector of the third transistor 105 can be electrically connected to the base of the fourth transistor 106, the emitter of the fourth transistor 106 can be electrically connected to the output port of the third power supply 108, and the collector of the fourth transistor 106 can be electrically connected to the signal receiving port of the controller 5.

[0063] When the analog signal received through the gate of the PMOS transistor 104 is less than or equal to a second threshold, the wake-up circuit 1 may use the collector of the fourth transistor 106 to send the wake-up signal to the controller 5 .

[0064] In the implementation of this specification, since the pressure value generated by the hydraulic unit 3 is often positively correlated with the stroke, opening, etc. generated by the user stepping on the brake pedal, that is, the greater the distance the user moves the brake pedal, the greater the pressure value generated by the hydraulic unit 3, and correspondingly, the voltage value of the analog signal output by the pressure sensor can be smaller.

[0065] Specifically, when the user steps on the brake pedal 4 so that the pressure value generated by the hydraulic unit 3 reaches a preset value, the voltage value of the analog signal output by the pressure sensor 2 can be reduced to a second threshold value. At this time, the PMOS transistor 104 can be changed from an off state to an on state, and then the third transistor 105 and the fourth transistor 106 can both be changed from an off state to an on state. At this time, the electric energy provided by the third power supply 108 can flow to the controller 5 through the collector of the fourth transistor 106, so that the signal receiving port of the controller 5 receives a wake-up signal.

[0066] When the user steps on the brake pedal 4 and the pressure value generated by the hydraulic unit 3 does not reach the preset value, the voltage value of the analog signal output by the pressure sensor 2 is usually greater than the second threshold value. At this time, the PMOS transistor 104, the third transistor 105 and the fourth transistor 106 will all remain in the off state. At this time, the electric energy provided by the third power supply 108 cannot flow to the controller 5 through the collector of the fourth transistor 106, so that the signal receiving port of the controller 5 will not receive the wake-up signal.

[0067] Optionally, in some embodiments of the present invention, the wake-up circuit 1 may further include: a third resistor and a fourth resistor; wherein the output port of the pressure sensor 2 may be electrically connected to the gate of the PMOS transistor 104 via the third resistor; the fifth port of the fourth resistor may be electrically connected to the gate of the PMOS transistor 104, and the sixth port of the fourth resistor may be electrically connected to the source of the PMOS transistor 104.

[0068] By dividing the voltage and limiting the current of the electric energy output by the PMOS transistor 104 through the third resistor and the fourth resistor, the wake-up circuit 1 can accurately generate a wake-up signal when the voltage value of the analog signal output by the pressure sensor 2 is less than or equal to the second threshold value, which is beneficial to improving the accuracy of braking control, and also beneficial to improving the model selection range for the pressure sensor 2, and avoiding damage to the PMOS due to excessive gate-source voltage, thereby ensuring the stable operation of the wake-up circuit.

[0069] Optionally, in some implementations of the present invention, the wake-up circuit 1 may further include: a fifth NPN transistor and a fourth power supply.

[0070] The base of the fifth transistor may be electrically connected to the output port of the fourth power supply, the emitter of the fifth transistor may be electrically connected to the ground, and the collector of the fifth transistor may be electrically connected to the emitter of the target transistor.

[0071] Among them, the target transistor can be a transistor whose collector in the wake-up circuit is electrically connected to the signal receiving port of the controller; when the controller is in the awake state, the fourth power supply can supply power to the base of the fifth transistor through the output port of the fourth power supply to make the fifth transistor in the on state, and make the target transistor in the off state.

[0072] Optionally, the fourth power supply can be a power supply whose working state is controlled by the controller 5, so that when the controller 5 is in the awake state, the fourth power supply can also be in the working state to output electrical energy to the fifth transistor; and when the controller 5 is in the sleep state, the fourth power supply can also be in the sleep state, so as not to output electrical energy to the fifth transistor.

[0073] For ease of understanding, Figure 4 FIG. 1 is a schematic diagram of a wake-up circuit in another embodiment of the present invention. Figure 4The wake-up circuit 1 may further include: a fifth transistor 109 of NPN type and a fourth power supply 110. When the controller 5 is in the wake-up state, the fourth power supply 110 may supply power to the base of the fifth transistor 109, so that the fifth transistor 109 may be changed from the cut-off state to the on state. At this time, the voltage of the emitter of the target transistor 102 may be pulled down, so that the target transistor 102 may be changed from the on state to the cut-off state. Subsequently, when the controller 5 is in the wake-up state, even if the analog signal output by the pressure sensor can reach the first threshold value, so that the first transistor 101 is in the on state, the target transistor 102 may not be turned on because the voltage of the emitter of the target transistor 102 is too low. It can be seen that the wake-up circuit will not send a wake-up signal to the controller 5 again when the controller 5 is in the wake-up state, which is conducive to ensuring the operating stability of the controller 5 and reducing power consumption.

[0074] Based on similar principles, Figure 5 FIG. 1 is a schematic diagram of a wake-up circuit in another embodiment of the present invention. Figure 5 The wake-up circuit 1 may further include: an NPN-type fifth transistor 111 and a fourth power supply 112. When the controller 5 is in the wake-up state, the fourth power supply 112 may supply power to the base of the fifth transistor 111, so that the fifth transistor 111 may be changed from the cut-off state to the on state. At this time, the voltage of the emitter of the target transistor 106 may drop, so that the target transistor 106 is in the cut-off state. Subsequently, even if the analog signal output by the pressure sensor is less than or equal to the second threshold value, so that the PMOS transistor 104 and the third transistor 105 are in the on state, the target transistor 106 may not be turned on because the voltage of the emitter of the target transistor 106 is too low. It can be seen that the wake-up circuit will not send a wake-up signal to the controller 5 again when the controller 5 is in the wake-up state, which is conducive to ensuring the operating stability of the controller 5 and reducing power consumption.

[0075] In the embodiments of the present specification, the voltage values ​​and current values ​​output by the first power supply, the second power supply, the third power supply and the fourth power supply can be set according to actual needs, and the above-mentioned power supplies can be realized by voltage adjustment and transformation based on the same or multiple power supplies, or can be realized by using different independent power supplies; and the turn-on voltage and selection of the first triode, the second triode, the third triode, the fourth triode, the fifth triode and the PMOS transistor can be set according to actual needs, and it is only necessary to enable the wake-up circuit to work according to the above-mentioned principle, and no specific limitation is made to this.

[0076] Optionally, in some embodiments of the present invention, the wake-up device for the braking system may further include: a fifth power supply and a low voltage dropout regulator.

[0077] The output port of the fifth power supply can be electrically connected to the input port of the low-dropout regulator, and the output port of the low-dropout regulator can be electrically connected to the power input port of the pressure sensor 2; the low-dropout regulator can be used to convert the voltage signal output by the fifth power supply into the working voltage signal required by the pressure sensor 2. Thus, the energy required for the operation is provided to the pressure sensor 2 through the fifth power supply and the low-dropout regulator, which is conducive to ensuring the stability of the working process of the pressure sensor 2, and further ensuring the operation stability of the wake-up device for the brake system.

[0078] It is understandable that in order to ensure the operational stability and service life of the wake-up circuit, resistors, capacitors or other electrical components, hardware modules, etc. can be adaptively set in the wake-up circuit according to actual needs to avoid damage to the transistors and transistors in the wake-up circuit due to excessive voltage and current during operation. No specific limitation is made to this.

[0079] Optionally, in some embodiments of the present invention, the first port 11 of the wake-up circuit 1 may be electrically connected to the output port of the pressure sensor 2 via a first wire, and the second port of the wake-up circuit 1 may be electrically connected to the signal receiving port of the controller 5 via a second wire. In this case, the wake-up circuit 1 may not need to be disposed on an integrated circuit board at the controller, but may be electrically connected to the pressure sensor 2 and the controller 5 via an external wire, which is more flexible.

[0080] Optionally, in some embodiments of the present invention, the wake-up circuit 1 and the pressure sensor 2 may be both disposed on the integrated circuit board of the controller 5; the first port 11 of the wake-up circuit 1 may be electrically connected to the output port of the pressure sensor 2 via the first conductive circuit in the integrated circuit board, and the second port 12 of the wake-up circuit 1 may be electrically connected to the signal receiving port of the controller 5 via the second conductive circuit in the integrated circuit board. In this case, the number of peripheral wires can be reduced, which is conducive to further reducing the volume and cost of the wake-up circuit and the wake-up device.

[0081] Optionally, in some embodiments of the present invention, the wake-up circuit 1 may be disposed at the first integrated circuit board of the controller, the pressure sensor 2 may be disposed at the second integrated circuit board, and a conductor connector may be disposed between the first integrated circuit board and the second integrated circuit board, so that the first port 11 of the wake-up circuit 1 may be electrically connected to the output port of the pressure sensor 2 via the third conductive circuit in the first integrated circuit board, the conductor connector, and the fourth conductive circuit in the second integrated circuit board, and the second port 12 of the wake-up circuit 1 may be electrically connected to the signal receiving port of the controller 5 via the fifth conductive circuit in the first integrated circuit board, so as to simplify the device structure and reduce the cost.

[0082] In practical applications, there are many ways to implement the conductor connector. For example, the PIN pin of the pressure sensor 2 can be connected to the second integrated circuit board. If the second integrated circuit board and the first integrated circuit board have metal contact points of suitable size, a metal spring can be used as a conductor connector to achieve electrical connection between the second integrated circuit board and the first integrated circuit board. Of course, metal springs or other devices can also be used as conductor connectors between the second integrated circuit board and the first integrated circuit board, and this is not specifically limited.

[0083] In some embodiments of the present invention, a braking system is also provided, which may include: a controller 5, a hydraulic unit 3 and a brake pedal 4. In addition, the braking system may also include a braking system wake-up device provided in the embodiments of this specification.

[0084] Since the controller 5 in the braking system can be awakened by the awakening device provided in the embodiment of this specification, it can not only ensure timely braking of the vehicle, but also has the advantages of simple structure, small size, low development cost, and easy promotion.

[0085] Optionally, in some embodiments of the present invention, a vehicle is further provided, the vehicle comprising the braking system provided in the above embodiment, so that the vehicle can respond to the user's braking demand in a timely manner, which is not only conducive to ensuring the safety of the user, but also has the advantage of low cost.

[0086] It should be noted that the terms “upper”, “lower”, “left” and “right” described in this article are for ease of understanding and are based on Figures 1 to 5 The exemplary description is based on the setting method and direction of the wake-up circuit, pressure sensor, hydraulic unit, brake pedal and controller, which is not intended to limit the present invention.

[0087] It should be noted that the prior art part in the protection scope of the utility model is not limited to the embodiments given in the utility model documents. All prior art that does not contradict the scheme of the utility model, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the utility model.

[0088] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0089] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith are directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and should all fall within the protection scope of the present invention.

Claims

1. A wake-up device for a braking system, characterized in that: The awakening device comprises: A pressure sensor, which is used to sense the pressure value generated by the hydraulic unit of the brake system when the brake pedal of the brake system is in operation, and generate a corresponding analog signal based on the pressure value; A wake-up circuit has a first port and a second port, wherein the first port is electrically connected to the output port of the pressure sensor, and the second port is electrically connected to the controller of the braking system, so as to send a wake-up signal generated based on the analog signal to the controller to wake up the controller for braking.

2. The wake-up device according to claim 1, characterized in that: When the analog signal is a voltage signal having a positive correlation with the pressure value generated by the hydraulic unit, the wake-up circuit includes: a first NPN transistor, a second PNP transistor and a first power supply; The output port of the pressure sensor is electrically connected to the base of the first transistor, the emitter of the first transistor is electrically connected to the ground, the collector of the first transistor is electrically connected to the base of the second transistor, the emitter of the second transistor is electrically connected to the output port of the first power supply, and the collector of the second transistor is electrically connected to the signal receiving port of the controller; When the analog signal received through the base of the first transistor is greater than or equal to a first threshold, the wake-up circuit sends the wake-up signal to the controller through the collector of the second transistor.

3. The wake-up device according to claim 2, characterized in that: The wake-up circuit further includes: a first resistor and a second resistor; Wherein, the output port of the pressure sensor is electrically connected to the base of the first transistor via the first resistor; The third port of the second resistor is electrically connected to the base of the first transistor, and the fourth port of the second resistor is electrically connected to the ground.

4. The wake-up device according to claim 1, characterized in that: When the analog signal is a voltage signal having a negative correlation with the pressure value generated by the hydraulic unit, the wake-up circuit includes: a PMOS transistor, a third NPN transistor, a fourth PNP transistor, a second power supply and a third power supply; The output port of the pressure sensor is electrically connected to the gate of the PMOS transistor, the source of the PMOS transistor is electrically connected to the output port of the second power supply, the drain of the PMOS transistor is electrically connected to the base of the third transistor, the emitter of the third transistor is electrically connected to the ground, the collector of the third transistor is electrically connected to the base of the fourth transistor, the emitter of the fourth transistor is electrically connected to the output port of the third power supply, and the collector of the fourth transistor is electrically connected to the signal receiving port of the controller; When the analog signal received through the gate of the PMOS transistor is less than or equal to a second threshold, the wake-up circuit sends the wake-up signal to the controller through the collector of the fourth transistor.

5. The wake-up device according to claim 4, characterized in that: The wake-up circuit further includes: a third resistor and a fourth resistor; Wherein, the output port of the pressure sensor is electrically connected to the gate of the PMOS transistor via the third resistor; The fifth port of the fourth resistor is electrically connected to the gate of the PMOS transistor, and the sixth port of the fourth resistor is electrically connected to the source of the PMOS transistor.

6. The wake-up device according to any one of claims 2 to 5, characterized in that: The wake-up circuit further includes: a fifth NPN transistor and a fourth power supply; The base of the fifth transistor is electrically connected to the output port of the fourth power supply, the emitter of the fifth transistor is electrically connected to the ground, and the collector of the fifth transistor is electrically connected to the emitter of the target transistor; Wherein, the target transistor is a transistor whose collector in the wake-up circuit is electrically connected to the signal receiving port of the controller; When the controller is in the awake state, the fourth power supply supplies power to the base of the fifth transistor through the output port of the fourth power supply, so that the fifth transistor is in the on state, and the target transistor is in the off state.

7. The wake-up device according to claim 1, characterized in that: The wake-up device further comprises: a fifth power supply and a low voltage dropout regulator; The output port of the fifth power supply is electrically connected to the input port of the low-dropout voltage regulator, and the output port of the low-dropout voltage regulator is electrically connected to the power input port of the pressure sensor; The low voltage dropout regulator is used to convert the voltage signal output by the fifth power supply into an operating voltage signal required by the pressure sensor.

8. The wake-up device according to claim 1, characterized in that: The first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via a first wire, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via a second wire.

9. The wake-up device according to claim 1, characterized in that: The wake-up circuit and the pressure sensor are both arranged on the integrated circuit board of the controller; The first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via a first conductive circuit in the integrated circuit board, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via a second conductive circuit in the integrated circuit board.

10. The wake-up device according to claim 1, characterized in that: The wake-up circuit is arranged at a first integrated circuit board of the controller, the pressure sensor is arranged at a second integrated circuit board, and a conductor connector is arranged between the first integrated circuit board and the second integrated circuit board; The first port of the wake-up circuit is electrically connected to the output port of the pressure sensor via the third conductive circuit in the first integrated circuit board, the conductor connector, and the fourth conductive circuit in the second integrated circuit board, and the second port of the wake-up circuit is electrically connected to the signal receiving port of the controller via the fifth conductive circuit in the first integrated circuit board.

11. A braking system, comprising: A controller, a hydraulic unit and a brake pedal, characterized in that the braking system also includes a wake-up device as described in any one of claims 1-10.

12. A vehicle, characterized in that: The vehicle includes the braking system of claim 11 .

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