Hand brake device, control method thereof, electronic device and storage medium

Abstract

The present application relates to the technical field of parking brake, and provides a hand brake device, a control method thereof, an electronic device and a storage medium. The hand brake device comprises: a hand brake valve having a compressed air inlet, a compressed air outlet and an exhaust port; a stop valve arranged between the compressed air inlet and the compressed air outlet and connected to the exhaust port, the stop valve having a driving working position and a parking working position; when the stop valve works in the driving working position, a first valve cavity of the stop valve is connected to a first pipeline leading from the compressed air inlet to the compressed air outlet; when the stop valve works in the parking working position, the first pipeline is cut off, and a second valve cavity of the stop valve is connected to a second pipeline leading from the compressed air outlet to the exhaust port. The present application integrates the stop valve having the driving working position and the parking working position on the basis of retaining the hand brake valve, realizes the automatic control of the parking brake, and avoids the safety accidents caused by the parking failure due to the misoperation of personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of parking brake, in particular to a hand brake device, a control method thereof, an electronic device and a storage medium. BACKGROUND

[0002] The parking brake system of a commercial vehicle is usually configured with a mechanical locking type hand brake valve; when the driver operates the handle of the hand brake valve and moves the handle to the locking position and is locked by the locking mechanism, the brake pipeline between the compressed air inlet and the compressed air outlet of the hand brake valve is cut off, the gas in the brake chamber is exhausted through the exhaust port of the hand brake valve to generate braking force, and the stable parking of the vehicle is realized.

[0003] At present, the handle of the hand brake valve will be pulled out of the locking position in the case of improper operation of the driver, resulting in accidental release of the parking brake and causing safety accidents such as vehicle running away.

[0004] With the development of technology, although an electronic parking system appears, if the electronic parking system is used, the parking brake system of the commercial vehicle needs to be replaced as a whole, which is high in cost; and the operation mode of the electronic parking system is quite different from that of the mechanical locking type hand brake valve, which greatly affects the driving habits of the driver.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information which does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] Therefore, the present application provides a hand brake device, which realizes automatic control of parking brake by setting a stop valve between the compressed air inlet and the compressed air outlet of the hand brake valve and connecting the exhaust port of the hand brake valve, thereby avoiding safety accidents of parking failure caused by personnel misoperation.

[0007] According to one aspect of the present application, a hand brake device is provided, which comprises a hand brake valve having a compressed air inlet, a compressed air outlet and an exhaust port; the hand brake device further comprises a stop valve arranged between the compressed air inlet and the compressed air outlet and connected to the exhaust port, the stop valve having a driving working position and a parking working position; when the stop valve works in the driving working position, a first valve cavity of the stop valve is connected to a first pipeline leading from the compressed air inlet to the compressed air outlet; when the stop valve works in the parking working position, the first pipeline is cut off, and a second valve cavity of the stop valve is connected to a second pipeline leading from the compressed air outlet to the exhaust port.

[0008] In some embodiments, the stop valve is provided with a piston having a first force receiving end with a smaller area and a second force receiving end with a larger area, the first valve cavity is located on the side of the second force receiving end facing the first force receiving end, and the second valve cavity is located on the side of the second force receiving end facing away from the first force receiving end; the second force receiving end is connected to the compressed air inlet; when the compressed air inlet is connected to the first force receiving end, the stop valve works in the driving position; when the pipeline connecting the compressed air inlet to the first force receiving end is diverted, the stop valve works in the parking position.

[0009] In some embodiments, the hand brake device further comprises a parking valve connected to the pipeline connecting the compressed air inlet to the first force receiving end and connected to the exhaust port; when the parking valve is closed, the first force receiving end is connected to the compressed air inlet; when the parking valve is working, the pipeline connecting the compressed air inlet to the first force receiving end is diverted by the parking valve.

[0010] In some embodiments, the hand brake device further comprises a driving valve connected in the pipeline connecting the compressed air inlet to the first force receiving end, and the parking valve is connected to the pipeline connecting the driving valve to the first force receiving end; when the parking valve is closed and the driving valve is working, the first force receiving end is connected to the compressed air inlet through the driving valve.

[0011] In some embodiments, the parking valve and the driving valve are both connected to the electronic control unit of the vehicle; when the electronic control unit detects that the vehicle is in an idle state or a parking state, the parking valve is controlled to work; when the electronic control unit detects that the vehicle is in a driving state, the parking valve is controlled to be closed and the driving valve is controlled to work.

[0012] In some embodiments, the electronic control unit is connected to the ignition switch, brake pedal, speed sensor and driver seat pressure sensor of the vehicle.

[0013] In some embodiments, the electronic control unit is connected to the parking valve and the driving valve through an electronic plug connector; or, the electronic control unit is connected to the parking valve and the driving valve through a CAN bus.

[0014] In some embodiments, the stop valve is provided with a piston connected to a driver; when the driver drives the piston to move to a first position in a first direction, the stop valve works in the driving position; when the driver drives the piston to move to a second position in a second direction, the stop valve works in the parking position; wherein the first direction and the second direction extend in opposite directions along the axial direction of the piston.

[0015] In some embodiments, the cut-off valve is arranged between the compressed air inlet and the hand brake valve; or, the cut-off valve is arranged between the hand brake valve and the compressed air outlet.

[0016] According to still another aspect of the present application, there is provided a control method of a hand brake device, for controlling the hand brake device as described in any of the above embodiments, the control method comprising: when detecting that the vehicle is in a driving state, controlling the cut-off valve to work in the driving working position, so that the compressed air of the compressed air inlet flows to the compressed air outlet through the first valve cavity; when detecting that the vehicle is in an idling state or a parking state, controlling the cut-off valve to work in the parking working position, so that the compressed air of the compressed air outlet is discharged to the exhaust port through the second valve cavity.

[0017] In some embodiments, when detecting that the vehicle has ignition signal, speed signal and driver seat pressure signal, and does not have brake signal, it is determined that the vehicle is in the driving state; when detecting that the vehicle has ignition signal and driver seat pressure signal, and does not have brake signal and speed signal, it is determined that the vehicle is in the idling state; when detecting that the vehicle does not have driver seat pressure signal, it is determined that the vehicle is in the parking state.

[0018] According to still another aspect of the present application, there is provided an electronic device, comprising: a processor; a memory having stored executable instructions; wherein the executable instructions, when executed by the processor, implement the control method as described in any of the above embodiments.

[0019] According to still another aspect of the present application, there is provided a computer readable storage medium, for storing a program, the program, when executed by a processor, implements the control method as described in any of the above embodiments.

[0020] The present application has at least the following beneficial effects compared with the prior art:

[0021] The hand brake device of the present application adds a cut-off valve between the compressed air inlet and the compressed air outlet of the hand brake valve, and the cut-off valve is connected to the exhaust port of the hand brake valve; in the case of needing parking brake, only need to control the cut-off valve to work in the parking working position, cut off the first pipeline of the compressed air inlet to the compressed air outlet, and connect the second pipeline of the compressed air outlet to the exhaust port, at this time, no matter whether the hand brake valve is operated in place or not, the gas in the brake chamber can be discharged through the second pipeline, to realize stable parking brake; in the case of not needing parking brake, control the cut-off valve to work in the driving working position, then the first pipeline is connected, and the vehicle normally drives;

[0022] The judgment and operation of the control cut-off valve changing the working position can be automatically completed by the electronic control unit of the vehicle or other control components without the participation of the driver; the hand brake device retains the handle and locking mechanism of the hand brake valve, and when the driver operates the handle and pushes the handle to the locking position, the hand brake device can realize manual parking without changing the use habit of the driver.

[0023] Therefore, the hand brake device of the present application integrates the cut-off valve with the driving working position and the parking working position on the basis of the hand brake valve, realizes the automatic control of the parking brake, and avoids the safety accidents caused by the parking failure due to the misoperation of personnel.

[0024] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0026] Figure 1 An electrical schematic diagram of the hand brake device in the embodiment of the present application is shown;

[0027] Figure 2 A schematic diagram of the air path structure of the hand brake device when the cut-off valve works in the driving working position in the embodiment of the present application is shown;

[0028] Figure 3 A schematic diagram of the air path structure of the hand brake device when the cut-off valve works in the parking working position in the embodiment of the present application is shown;

[0029] Figure 4 A schematic diagram of the cross-sectional structure of the cut-off valve in the embodiment of the present application is shown;

[0030] Figure 5 A schematic diagram of the air path structure of the hand brake device connected to the electronic control unit in the embodiment of the present application is shown;

[0031] Figure 6 A schematic diagram of the steps of the control method of the hand brake device in the embodiment of the present application is shown;

[0032] Figure 7 A schematic diagram of the structure of the electronic device in the embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein. Rather, these implementations are provided as non-limiting examples, so that this disclosure will fully convey the scope of the application to those skilled in the art.

[0034] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0035] The terms "first", "second", and similar terms do not denote any order, quantity, or importance, but are used to identify different components. It is to be understood that the embodiments of the present application and the features of different embodiments can be combined with each other, if not contradictory.

[0036] Figure 1 An electrical principle of the hand brake device is shown, Figure 2 A gas circuit structure of the hand brake device when the stop valve works in the service position is shown, Figure 3 A gas circuit structure of the hand brake device when the stop valve works in the parking position is shown; in combination Figures 1 to 3 As shown, the hand brake device provided by the embodiments of the present application comprises:

[0037] The hand brake valve 100 has a compressed air inlet 110, a compressed air outlet 120, and an exhaust port 130;

[0038] The stop valve 200 is arranged between the compressed air inlet 110 and the compressed air outlet 120, and is connected to the exhaust port 130. The stop valve 200 has a service position and a parking position;

[0039] When the stop valve 200 works in the service position, the first valve cavity of the stop valve 200 accesses the first pipe P 11 connecting the compressed air inlet 110 to the compressed air outlet 120;

[0040] When the stop valve 200 works in the parking position, the first pipe P 11 is cut off, and the second valve cavity of the stop valve 200 accesses the second pipe P 22 connecting the compressed air outlet 120 to the exhaust port 130.

[0041] The hand brake device can be used in the parking brake system of a vehicle, for example, in the anti-lock brake system of a commercial vehicle. The compressed air inlet 110 is connected to the air reservoir of the vehicle to receive compressed air input; the compressed air outlet 120 is connected to a relay valve which is connected to the brake chamber at the wheel end to output compressed air to the brake chamber; the exhaust port 130 is used to exhaust air in the valve to the atmosphere without additional connecting pipeline.

[0042] The stop valve 200 is connected to the control component of the vehicle, for example, connected to the electronic control unit (ECU) to receive control signals from the control component to switch different working positions. The control component can control the stop valve 200 to work in the corresponding working position according to the different states of the vehicle (including driving state, idle state, parking state, etc.), to realize automatic control of the parking brake.

[0043] Specifically, in the case of needing parking brake (for example, the vehicle is in the idle state and the parking state), only need to control the stop valve 200 to work in the parking working position, cut off the first pipeline P 11 connecting the compressed air inlet 110 to the compressed air outlet 120, and connect the second pipeline P 22 connecting the compressed air outlet 120 to the exhaust port 130, at this time, whether the hand brake valve 100 is operated in place or not, the gas in the brake chamber can be exhausted through the second pipeline P 22 to realize stable parking brake; in the case of not needing parking brake (for example, the vehicle is in the driving state), control the stop valve 200 to work in the driving working position, then the first pipeline P 11 is connected, and the vehicle normally drives.

[0044] The judgment and operation of the control stop valve 200 to change the working position can be automatically completed by the control component such as the electronic control unit, without the participation of the driver; the hand brake device retains the handle and locking mechanism of the hand brake valve 100, and when the driver operates the handle and pushes the handle to the locking position, the hand brake device can realize manual parking without changing the use habit of the driver.

[0045] Therefore, the hand brake device of the application integrates the stop valve 200 with the driving working position and the parking working position on the basis of retaining the hand brake valve 100, realizes automatic control of the parking brake, and avoids safety accidents caused by parking failure due to personnel misoperation.

[0046] Figure 4 The cross-sectional structure of the stop valve is shown; in combination with Figures 1 to 4As shown, in some embodiments, the piston 220 is arranged in the cut-off valve 200, the piston 220 has a first force receiving end 220a with a smaller area and a second force receiving end 220b with a larger area, the first valve cavity 200a of the cut-off valve 200 is located on the side of the second force receiving end 220b facing the first force receiving end 220a, and the second valve cavity 200b of the cut-off valve 200 is located on the side of the second force receiving end 220b facing away from the first force receiving end 220a;

[0047] The second force receiving end 220b is connected to the compressed air inlet 110;

[0048] When the first force receiving end 220a is connected to the compressed air inlet 110, the cut-off valve 200 works in the driving working position;

[0049] When the pipeline connecting the compressed air inlet 110 to the first force receiving end 220a is drained, the cut-off valve 200 works in the parking working position.

[0050] The second force receiving end 220b is always connected to the compressed air inlet 110, so that in the normal case (i.e. the case where parking brake is needed), the cut-off valve 200 is controlled by the air source pressure from the compressed air inlet 110 to be in the parking working position, ensuring the safety of the vehicle in parking.

[0051] In the case where parking brake is not needed, the first force receiving end 220a is connected to the compressed air inlet 110, at this time the air source pressure at both ends of the piston 220 is the same, and since the first force receiving end 220a has a smaller area and the second force receiving end 220b has a larger area, the piston 220 is pushed to the second force receiving end 220b to open the first valve cavity 200a, so that the first pipeline P 11 is connected, and the compressed air from the compressed air inlet 110 flows through the first pipeline P 11 to the compressed air outlet 120 and further flows into the brake chamber to release the parking brake and enable the vehicle to drive normally.

[0052] When the pipeline connecting the compressed air inlet 110 to the first force receiving end 220a is drained, the air source pressure on the first force receiving end 220a is eliminated, and the piston 200 returns to the initial position, so that the cut-off valve 200 is cut off, i.e. returns to the parking working position.

[0053] Further combining Figures 1 to 3 As shown, in some embodiments, the hand brake device further comprises:

[0054] The parking valve 300 is connected to the pipeline P 33 connecting the compressed air inlet 110 to the first force receiving end 220a and is connected to the exhaust port 130;

[0055] When the parking valve 300 is closed, the first force receiving end 220a (through the pipeline P 33the compressed air inlet 110;

[0056] When the parking valve 300 is working, the pipeline P 33 is drained by the parking valve 300.

[0057] In combination Figure 2 and Figure 4 , when the parking valve 300 is closed, the pipeline P 33 is connected, and the piston 220 is pushed to the second force end 220b, so that the first valve cavity 200a is opened, the first pipeline P 11 is connected, and the stop valve 200 works in the driving working position. When the parking valve 300 is working, the pipeline P 33 is drained by the parking valve 300, so that the compressed air in the cavity where the first force end 220a is located is discharged to the exhaust port 130 through the parking valve 300 (the drainage route is shown in the pipeline P 44 ); thus, the air source pressure on the first force end 220a is eliminated, and the stop valve 200 returns to the parking working position.

[0058] In this way, when the vehicle is normally driven, the parking valve 300 is controlled to be closed, and when the parking brake is needed, the parking valve 300 is controlled to work, so that the working position of the stop valve 200 can be controlled.

[0059] Further, in combination Figures 1 to 3 , in some embodiments, the hand brake device further comprises:

[0060] a driving valve 400 connected in the pipeline P 33 where the compressed air inlet 110 is connected to the first force end 220a, and the parking valve 300 is connected to the pipeline where the driving valve 400 is connected to the first force end 220a;

[0061] When the parking valve 300 is closed and the driving valve 400 is working (which can be referred to Figure 2 ), the first force end 220a is connected to the compressed air inlet 110 through the driving valve 400; in this way, safety redundancy is realized, control safety is ensured, and the hand brake device is ensured to release the parking brake only when the parking valve 300 is closed and the driving valve 400 is working.

[0062] When the parking valve 300 is working, no matter whether the driving valve 400 is closed or not, the compressed air in the cavity where the first force end 220a is located will be drained to the exhaust port 130 through the parking valve 300, so that the stop valve 200 returns to the parking working position, and the hand brake device automatically realizes the parking brake.

[0063] Thus, through the parking valve 300 and the driving valve 400, when the vehicle is in normal driving or needs to release the parking brake, the driving valve 400 is used to control the cut-off valve 200 to the driving working position; when the vehicle needs to be parked, the parking valve 300 is used to control the cut-off valve 200 to the parking working position.

[0064] In some embodiments, the parking valve 300 and the driving valve 400 are both in communication with the electronic control unit of the vehicle; when the electronic control unit detects that the vehicle is in an idle state or a parking state, the parking valve 300 is controlled to work so that the cut-off valve 200 works in the parking working position, and the hand brake device automatically realizes the parking brake; when the electronic control unit detects that the vehicle is in a driving state, the parking valve 300 is controlled to be closed and the driving valve 400 is controlled to work so that the cut-off valve 200 works in the driving working position, and thus the vehicle is in normal driving.

[0065] The parking valve 300 and the driving valve 400 can be solenoid valves or other valves controlled by electrical signals to realize working / closing under the control of the electronic control unit.

[0066] Figure 5 The air path structure in which the hand brake device is connected to the electronic control unit is shown; in combination with Figure 1 and Figure 5 As shown in FIG. 5, in some embodiments, the electronic control unit 550 is in communication with the ignition switch 580a, the brake pedal 580b, the speed sensor 580c and the driver seat pressure sensor 580d of the vehicle.

[0067] Thus, the electronic control unit 550 can determine the current state of the vehicle according to the ignition signal of the ignition switch 580a, the brake signal of the brake pedal 580b, the speed signal of the speed sensor 580c and the driver seat pressure signal of the driver seat pressure sensor 580d. In other embodiments, the electronic control unit 550 can also determine the state of the vehicle according to other vehicle signals.

[0068] Specifically, in the present embodiment, when the electronic control unit 550 detects that the vehicle has the ignition signal, the speed signal and the driver seat pressure signal, and does not have the brake signal, it is judged that the vehicle is in the running state, at this time the electronic control unit 550 controls the parking valve 300 to be closed and the driving valve 400 to work, so that the cut-off valve 200 works in the driving working position; the driving valve 400 can be specifically actuated at a certain frequency to ensure that the cut-off valve 200 works in the driving working position. When the electronic control unit 550 detects that the vehicle has the ignition signal and the driver seat pressure signal, and does not have the brake signal and the speed signal, it is judged that the vehicle is in the idle state, at this time the electronic control unit 550 controls the parking valve 300 to work, so as to exhaust the compressed air in the chamber where the first force receiving end 220a is located, so that the cut-off valve 200 returns to the parking working position, so as to realize automatic parking brake when the vehicle needs to be parked, even if the handle is not accurately moved to the locking position due to the driver's forgetfulness / inappropriate operation, etc. When the driver leaves the driver seat, that is, when the electronic control unit 550 detects that the vehicle does not have the driver seat pressure signal, the electronic control unit 550 will control the parking valve 300 to work, which can specifically control the parking valve 300 to actuate to ensure that the vehicle is parked.

[0069] Continuing to refer to Figure 5 In some embodiments, the electronic control unit 550 is in communication with the parking valve 300 and the driving valve 400 through the electronic plug 520. The electronic plug 520 is connected to the parking valve 300 and the driving valve 400 through corresponding pins, and the electronic control unit 550 controls the actions of the parking valve 300 and the driving valve 400 through the electronic plug 520.

[0070] Alternatively, in some embodiments, the electronic control unit 550 can be in communication with the parking valve 300 and the driving valve 400 through the CAN bus, so as to control the actions of the parking valve 300 and the driving valve 400 through CAN communication.

[0071] In some embodiments, the piston 220 of the cut-off valve 200 can not be provided with different sizes of force receiving surfaces to move under the control of air pressure as shown in the drawings; the piston 220 can also be driven by a driver (not specifically shown in the drawings) such as a motor or a hydraulic cylinder to change the working position of the cut-off valve 200. Figure 4

[0072] Specifically, the piston 220 is connected to the driver; when the driver drives the piston 220 to move to the first position in the first direction (for example, drives the piston 220 to move to the left in the drawing), the cut-off valve 200 works in the driving working position; when the driver drives the piston 220 to move to the second position in the second direction (for example, drives the piston 220 to move to the right in the drawing), the cut-off valve 200 works in the parking working position. Figure 4 Figure 4 ​​the right direction drives the piston 220 to move to the closed first valve cavity 200a), the stop valve 200 works in the parking working position; wherein the first direction and the second direction extend reversely along the axial direction of the piston 220.

[0073] Further, in some embodiments, the stop valve 200 can not be arranged between the compressed air inlet 110 and the hand brake valve 100 as shown; the stop valve 200 can also be arranged between the hand brake valve 100 and the compressed air outlet 120, and the working state of the hand brake device can also be changed by changing the working position. Figure 1

[0074] In summary, the hand brake device of the present application integrates the stop valve with the driving working position and the parking working position on the basis of the hand brake valve, has high integration and compact structure; in the case of needing parking brake, the stop valve only needs to be controlled to work in the parking working position, the first pipeline of the compressed air inlet to the compressed air outlet is cut off, and the second pipeline of the compressed air outlet to the exhaust port is connected, at this time, no matter whether the hand brake valve is operated to the position or not, the gas in the brake chamber can be exhausted through the second pipeline, the automatic control of the parking brake is realized, and the safety accidents caused by the parking failure due to the misoperation of personnel are avoided; in the case of not needing parking brake, the stop valve is controlled to work in the driving working position, and the first pipeline is connected, so that the vehicle can normally drive;

[0075] The judgment and operation of controlling the stop valve to change the working position can be automatically completed by the electronic control unit of the vehicle and other control components in combination with the driving valve and the parking valve, and the driver does not need to participate; the hand brake device retains the handle and the locking mechanism of the hand brake valve, and when the driver operates the handle and pushes the handle to the locking position, the hand brake device can realize manual parking, without changing the use habit of the driver.

[0076] The embodiment of the present application also provides a control method of the hand brake device, which is used for controlling the hand brake device described in any of the above embodiments. The features and principles of the hand brake device described in the above embodiments can be applied to the following control method embodiments. In the following control method embodiments, the features and principles of the hand brake device that have been illustrated will not be repeatedly described.

[0077] Figure 6 The main steps of the control method of the hand brake device are shown; it should be noted that, Figure 6 The steps shown are only illustrative, and the execution sequence between the steps is not limited in this way, and the splitting, merging, sequence exchange, other synchronous or asynchronous execution mode of the steps are all within the protection scope of the present application.

[0078] In combination with Figures 1 to 6 As shown, the control method of the hand brake device includes: ​

[0079] S610, when detecting that the vehicle is in the driving state, controlling the cut-off valve 200 to work in the driving working position, so that the compressed air of the compressed air inlet 110 flows to the compressed air outlet 120 through the first valve cavity 200a;

[0080] S620, when detecting that the vehicle is in the idling state or the parking state, controlling the cut-off valve 200 to work in the parking working position, so that the compressed air of the compressed air outlet 120 is discharged to the exhaust port 130 through the second valve cavity 200b.

[0081] Therefore, according to different states (driving state, idling state and parking state) of the vehicle, by controlling the cut-off valve 200 to work in the corresponding working position, the automatic control of the parking brake is realized. The judgment and operation of the cut-off valve 200 changing the working position can be automatically completed by the electronic control unit of the vehicle or similar control components, without the participation of the driver; the hand brake device retains the handle and locking mechanism of the hand brake valve 100 structure, and when the driver operates the handle and pushes the handle to the locking position, the hand brake device can realize manual parking, without changing the use habit of the driver.

[0082] Further, referring to FIG. 5, Figure 5 The electronic control unit 550 can determine the current state of the vehicle according to the ignition signal of the ignition switch 580a, the brake signal of the brake pedal 580b, the rotation speed signal of the rotation speed sensor 580c and the driver seat pressure signal of the driver seat pressure sensor 580d.

[0083] Specifically, when detecting that the vehicle has the ignition signal, the rotation speed signal and the driver seat pressure signal, and does not have the brake signal, it is determined that the vehicle is in the driving state; when detecting that the vehicle has the ignition signal and the driver seat pressure signal, and does not have the brake signal and the rotation speed signal, it is determined that the vehicle is in the idling state; when detecting that the vehicle does not have the driver seat pressure signal, it is determined that the vehicle is in the parking state.

[0084] The working of the cut-off valve 200 in the driving working position / parking working position can be realized by controlling the working / closing state of the driving valve 400 and the parking valve 300 described in the above embodiments, and the description is not repeated.

[0085] The embodiment of the application also provides an electronic device, which comprises a processor and a memory, and the memory stores executable instructions, and the executable instructions are executed by the processor to realize the control method of the hand brake device described in any of the above embodiments.

[0086] The electronic device can be an electronic control unit of a vehicle, or a control module integrated in the electronic control unit, or other similar control components of the vehicle, as long as it can realize the control of the hand brake device.

[0087] In combination Figure 1 As shown, the electronic device is communicatively connected with the stop valve 200, and is capable of realizing automatic control of the parking brake according to different states (driving state, idling state and parking state) of the vehicle by controlling the stop valve 200 to work at the corresponding working position.

[0088] Figure 7 The main modules of the electronic device are shown; refer to Figure 7 As shown, the electronic device 700 can be in the form of a general computing device, including a processor 710, a storage 720, a bus 730 connecting different components (including the storage 720 and the processor 710), etc.

[0089] The storage 720 can include a readable medium in the form of a volatile storage unit, such as a random access memory (RAM) and / or a cache storage, and can further include a read-only memory (ROM).

[0090] The storage 720 can also include programs / utilities having one or more program modules, such as an operating system, one or more application programs, other program modules, and program data, each of which or a combination of which can include an implementation of a network environment.

[0091] The bus 730 can be one or more of several types of bus structures, including a storage unit bus or bus controller, a peripheral bus, a graphics acceleration port, a processing unit bus, or a local bus using any of a variety of bus architectures.

[0092] The electronic device 700 can also communicate with one or more external devices, such as the stop valve 200, the parking brake valve 300, the service brake valve 400, the ignition switch 580a, the brake pedal 580b, the speed sensor 580c, the driver seat pressure sensor 580d, etc. described in the above embodiments. The electronic device 700 can also communicate with one or more other computing devices, such as through an input / output (I / O) interface of the electronic device 700. In addition, the electronic device 700 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) through a network adapter. The network adapter can communicate with other modules of the electronic device 700 through the bus 730.

[0093] The embodiment of the present application also provides a computer readable storage medium for storing a program, the program being executed to realize the control method of the manual brake device described in any of the above embodiments. In some possible implementation manners, various aspects of the present application can also be implemented in the form of a program product, which includes program codes for causing a terminal device to execute the control method of the manual brake device described in any of the above embodiments when the program product is run on the terminal device.

[0094] The storage medium of the present application can be executed by an electronic control unit of a vehicle or other similar control components of the vehicle to realize that, according to different states (driving state, idling state and parking state) of the vehicle, the control method controls the stop valve of the manual brake device to work at the corresponding working position, and realizes the automatic control of the parking brake.

[0095] The storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, device or apparatus.

[0096] The storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example but not limited to, an electrical, magnetic, optical, electromagnetic, infrared or semiconductor system, device or apparatus, or any combination of the above. The readable signal medium can include a data signal propagating in a baseband or as a part of a carrier wave, in which readable program codes are carried. Such a propagated data signal can adopt various forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above.

[0097] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or replacements can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A hand brake device, comprising a hand brake valve having a compressed air inlet, a compressed air outlet and an exhaust port; characterized in that The hand brake device further comprises: a stop valve arranged between the compressed air inlet and the compressed air outlet and connected to the exhaust port, the stop valve being provided with a piston having a first force receiving end with a smaller area and a second force receiving end with a larger area, a first valve cavity of the stop valve being located on a side of the second force receiving end facing the first force receiving end, a second valve cavity of the stop valve being located on a side of the second force receiving end facing away from the first force receiving end, and the stop valve having a driving working position and a parking working position; wherein the second force receiving end is connected to the compressed air inlet; when the first force receiving end is connected to the compressed air inlet, the stop valve works in the driving working position, and when the stop valve works in the driving working position, a first pipeline of the stop valve connecting the first valve cavity to the compressed air inlet leading to the compressed air outlet; when the pipeline of the compressed air inlet leading to the first force receiving end is diverted, the stop valve works in the parking working position, and when the stop valve works in the parking working position, the first pipeline is cut off, and a second pipeline of the stop valve connecting the second valve cavity to the compressed air outlet leading to the exhaust port.

2. The hand brake apparatus of claim 1, wherein Further comprising: a parking valve connected to the pipeline of the compressed air inlet leading to the first force receiving end and connected to the exhaust port; when the parking valve is closed, the first force receiving end is connected to the compressed air inlet; when the parking valve works, the pipeline of the compressed air inlet leading to the first force receiving end is diverted by the parking valve.

3. The hand brake apparatus of claim 2, wherein Further comprising: a driving valve connected in the pipeline of the compressed air inlet leading to the first force receiving end, and the parking valve is connected to the pipeline of the driving valve leading to the first force receiving end; when the parking valve is closed and the driving valve works, the first force receiving end is connected to the compressed air inlet through the driving valve.

4. The hand brake apparatus of claim 3, wherein The parking valve and the driving valve are both communicatively connected to an electronic control unit of a vehicle; when the electronic control unit detects that the vehicle is in an idle state or a parking state, the parking valve is controlled to work; when the electronic control unit detects that the vehicle is in a driving state, the parking valve is controlled to be closed and the driving valve is controlled to work.

5. The hand brake apparatus of claim 4, wherein, The electronic control unit is communicatively connected to an ignition switch, a brake pedal, a speed sensor and a driver seat pressure sensor of the vehicle.

6. The hand brake apparatus of claim 4, wherein, The electronic control unit is communicatively connected to the parking valve and the driving valve through an electronic plug-in connector; Alternatively, the electronic control unit is communicatively connected to the parking valve and the driving valve through a CAN bus.

7. The hand brake apparatus of claim 1 wherein, The stop valve is provided with a piston connected to a driver; when the driver drives the piston to move to a first position in a first direction, the stop valve works in the driving working position; when the driver drives the piston to move to a second position in a second direction, the stop valve works in the parking working position; wherein the first direction and the second direction extend in opposite directions along an axial direction of the piston.

8. Hand brake device according to any of claims 1-7, characterized in that The cut-off valve is arranged between the compressed air inlet and the hand brake valve; or The cut-off valve is arranged between the hand brake valve and the compressed air outlet.

9. A control method of a hand brake device, characterized by, A control method for controlling the hand brake device according to any one of claims 1-8, the control method comprising: controlling the cut-off valve to work at the driving working position when detecting that the vehicle is in a driving state, so that the compressed air of the compressed air inlet flows to the compressed air outlet through the first valve cavity; controlling the cut-off valve to work at the parking working position when detecting that the vehicle is in an idling state or a parking state, so that the compressed air of the compressed air outlet is discharged to the exhaust port through the second valve cavity.

10. The control method according to claim 9, characterized by, determining that the vehicle is in the driving state when detecting that the vehicle has an ignition signal, a speed signal and a driver seat pressure signal, and does not have a brake signal; determining that the vehicle is in the idling state when detecting that the vehicle has an ignition signal and a driver seat pressure signal, and does not have a brake signal and a speed signal; determining that the vehicle is in the parking state when detecting that the vehicle does not have a driver seat pressure signal.

11. An electronic device, comprising: comprise: a processor; a memory, the memory storing executable instructions; wherein the executable instructions, when executed by the processor, implement the control method according to claim 9 or 10.

12. A computer readable storage medium storing a program, characterized in that, The program, when executed by the processor, implements the control method according to claim 9 or 10.

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