CN112277908A - Vehicle braking system, vehicle braking method based on vehicle braking system and storage medium - Google Patents
Vehicle braking system, vehicle braking method based on vehicle braking system and storage medium Download PDFInfo
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- CN112277908A CN112277908A CN202011187698.4A CN202011187698A CN112277908A CN 112277908 A CN112277908 A CN 112277908A CN 202011187698 A CN202011187698 A CN 202011187698A CN 112277908 A CN112277908 A CN 112277908A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/16—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a vehicle braking system, a vehicle braking method based on the vehicle braking system and a storage medium, wherein the system mainly comprises: the device comprises an inflating device, a detection device, an air storage cylinder, a control device and a braking device, wherein the inflating device, the detection device, the air storage cylinder, the control device and the braking device are sequentially connected through an air loop in sequence; wherein the control device comprises a remote control module, and the remote control module is used for receiving a remote instruction of a user and controlling the gas flow rate of the gas circuit based on the remote instruction so as to control the operation state of the brake device; the detection device is used for detecting the internal pressure of the air reservoir and sending feedback signals corresponding to different internal pressures to the inflation device according to the internal pressure, so that the inflation device can execute inflation operation or stop inflation operation based on the feedback signals, braking control of the vehicle is achieved, and a vehicle remote braking function at a high speed is achieved.
Description
Technical Field
The present invention relates to the field of vehicle braking technologies, and in particular, to a vehicle braking system, a vehicle braking method based on the vehicle braking system, and a storage medium.
Background
Safety, energy conservation, environmental protection, intellectualization and informatization are development trends of vehicles, and at present, remote control technology is rapidly developed on vehicles, and the application range is wider and wider. The parking brake anti-theft technology is mature in the field of vehicle braking, and a brake executing device or system of the parking brake anti-theft technology mainly adopts a steering engine to realize brake control.
However, in practical application, the steering engine is only suitable for a scene with low braking intensity and low running speed due to the structural characteristics of the steering engine. Therefore, when the brake system mainly including the steering engine is used for braking the vehicle, the brake system is only suitable for a low-speed vehicle running state, such as a parking process. Thus making it difficult for the existing brake system to be applied when it is necessary to perform brake control in a scene where the vehicle running speed is high. Therefore, how to design a device or a system capable of controlling the braking of a vehicle at a high running speed has become a problem that is becoming increasingly important in the field.
Therefore, there is a need for a vehicle braking system that at least partially solves the problems of the prior art.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problem, in a first aspect, the present invention provides a vehicle brake system including:
the device comprises an inflating device, a detection device, an air storage cylinder, a control device and a braking device, wherein the inflating device, the detection device, the air storage cylinder, the control device and the braking device are sequentially connected through an air loop in sequence;
the control device comprises a remote control module, wherein the remote control module is used for receiving a remote instruction of a user and controlling the gas flow rate of the gas circuit based on the remote instruction so as to control the operation state of the brake device;
the detection device is used for detecting the internal pressure of the air reservoir and sending feedback signals corresponding to different internal pressures to the inflation device according to the internal pressure, so that the inflation device can perform inflation operation or stop inflation operation based on the feedback signals.
Preferably, the control device further includes: the manual control module is used for controlling the gas flow rate of the gas loop after receiving an external force applied by a user so as to control the operation state of the braking device, and the manual control module and the remote control module are connected in parallel in the gas loop;
wherein the manual control module comprises: pressure sensors and valve regulators;
the pressure sensor is used for collecting pressure applied by a user and obtaining a valve adjusting signal corresponding to the pressure;
the air inlet of the valve adjuster is connected with the air storage cylinder, the air outlet of the valve adjuster is connected with the air inlet of the braking device, and the valve adjuster is used for receiving the valve adjusting signal and executing valve adjusting operation according to the valve adjusting signal so as to change the air flow rate of the air outlet of the valve adjuster to control the braking device.
Preferably, the manual control module further includes: a signal correction interface;
the signal correction interface is used for being connected and communicated with an ABS (anti-lock brake system) of a vehicle, and is also used for sending the valve regulating signal to the ABS after the pressure sensor generates the valve regulating signal;
the signal correction interface is further configured to receive a correction signal of the ABS anti-lock braking system and send the correction signal to the valve adjuster, where the correction signal is obtained by correcting the valve adjustment signal based on environmental information by the ABS anti-lock braking system;
the valve regulator is further used for executing valve regulation operation according to the correction signal after receiving the correction signal so as to change the gas flow rate from the gas outlet of the valve regulator to control the braking device.
Preferably, the remote control module includes: the device comprises a receiver, a processor and a proportional solenoid valve;
the receiver is used for receiving a remote instruction of a user and sending the remote instruction to the processor;
the processor is used for generating a control instruction and sending the control instruction to the proportional solenoid valve after receiving the remote instruction;
and the proportional solenoid valve is used for controlling the operation state of the braking device by controlling the gas flow rate of the gas loop after receiving the control instruction.
Preferably, the remote control module includes: a command modification interface;
the command correction interface is connected with the processor and is used for being connected with and communicating with an ABS (anti-lock brake system) in a vehicle, and after the processor generates the control command, the control command is sent to the ABS;
the command correction interface is further used for receiving a correction command fed back by the ABS and sending the correction command to the processor, wherein the correction command is obtained by correcting the control command by the ABS based on environmental information;
and the processor is also used for sending the correction command to the proportional solenoid valve after receiving the correction command.
Preferably, the detection device includes: an unloading valve;
the unloading valve is used for detecting the internal pressure of the air storage cylinder to obtain pressure information, generating a feedback signal corresponding to the pressure information, and sending the feedback signal to the inflating device so as to control the inflating device to perform inflating operation or stop inflating operation.
Preferably, the detection device includes:
an electrically controlled dryer;
the air inlet of the electric control dryer is connected with the inflation device, the air outlet of the electric control dryer is connected with the air storage cylinder, and the electric control dryer is used for drying the control input from the air inlet and outputting the dried gas from the air outlet.
Preferably, the inflator includes: an electric air compressor and a condenser; the electric air compressor is connected with the condenser through a gas loop;
the electric air compressor is used for compressing gas after air suction and sending the gas to the condenser, the condenser is used for executing condensation operation after receiving the compressed gas, so that target gas in the compressed gas is filtered, and the target gas comprises water vapor.
Preferably, the system further comprises: the gas storage device comprises a gas storage cylinder, a pipeline protection valve and a valve, wherein the pipeline protection valve is arranged at a gas inlet of the gas storage cylinder and used for adjusting a built-in valve to isolate a branch with abnormal gas pressure from a gas loop when the branch with abnormal gas pressure in the gas loop is detected.
In a second aspect, the present invention further provides a vehicle braking method based on a vehicle braking system, wherein the vehicle braking system is applied to a processor, and the system comprises:
when a remote instruction is received, generating a control command according to the remote instruction; the remote instruction is issued by a user remotely and used for indicating the execution of the braking operation;
generating a control command corresponding to the remote instruction according to the remote instruction;
and sending the control command to a proportional solenoid valve so as to control a brake device to execute brake operation corresponding to the control command through the proportional solenoid valve.
Preferably, the vehicle braking method according to claim 10, further comprising, before said sending the control command to a proportional solenoid valve:
sending the control command to an ABS;
the sending the control command to a proportional solenoid valve so as to control a brake device to execute a brake operation corresponding to the control command through the proportional solenoid valve comprises:
and after receiving a correction command fed back by the ABS, sending the correction command to a proportional solenoid valve so as to control a brake device to execute a brake operation corresponding to the correction command through the proportional solenoid valve, wherein the correction command is obtained after the ABS corrects the control command based on environmental information.
Preferably, the correction instruction is further provided with a command time limit;
after the sending the control command to an ABS, the method further comprises:
judging whether the command time limit is exceeded or not according to the current moment, wherein the command time limit is used for defining whether a correction instruction needs to be executed or not;
after receiving a correction command fed back by the ABS, sending the correction command to a proportional solenoid valve, comprising:
if the command time limit is judged to be exceeded according to the current moment, feeding back a command effective prompt to the ABS;
and/or the presence of a gas in the gas,
and if the command time limit is judged to be exceeded according to the current moment, a correction instruction is requested to be formulated again to the ABS.
In a third aspect, the present invention further provides a vehicle braking method based on a vehicle braking system, wherein the vehicle braking system is applied to the unloading valve processor, and the system comprises the following components:
collecting the internal pressure in the air storage cylinder to obtain pressure information;
judging whether the pressure information is smaller than a back pressure threshold value, wherein the back pressure threshold value is the minimum value of the pressure of the air storage cylinder in a normal operation state;
if the first feedback signal is smaller than the second feedback signal, generating a first feedback signal, wherein the first feedback signal is used for controlling the inflating device to perform inflating operation;
and if the output signal is not less than the preset value, generating a second feedback signal, wherein the second feedback signal is used for controlling the inflating device to stop inflating.
In a fourth aspect, the present invention also provides a computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to perform the method of the second or third aspect.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention provides a vehicle braking system, which mainly comprises: the device comprises an inflating device, a detection device, an air storage cylinder, a control device and a braking device, wherein the inflating device, the detection device, the air storage cylinder, the control device and the braking device are sequentially connected through an air loop in sequence; the control device comprises a remote control module, wherein the remote control module is used for receiving a remote instruction of a user and controlling the gas flow rate of the gas circuit based on the remote instruction so as to control the operation state of the brake device; the detection device is used for detecting the internal pressure of the air reservoir and sending feedback signals corresponding to different internal pressures to the inflation device according to the internal pressure, so that the inflation device can perform inflation operation or stop inflation operation based on the feedback signals, and braking control of a vehicle is achieved. The control device arranged in the system comprises a remote control module which can ensure that a remote control mode realizes a remote control brake function; meanwhile, through the system formed by connecting the air charging device, the detection device, the air storage cylinder, the control device and the braking device through the air loop, the braking control function is that the braking device is controlled by the air applied by the air charging device in the air loop to perform braking control, and the braking process is performed in a pneumatic mode without using a steering engine, so that higher braking strength is generated in the braking process performed in the pneumatic mode, the problem of lower braking strength when the braking is performed by depending on a steering engine structure in the prior art is solved, and the requirement of high-strength vehicle braking in a scene with higher running speed can be met.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a vehicle brake system according to the present invention.
Fig. 2 is a schematic structural diagram of another vehicle brake system according to the present invention.
Fig. 3 is a schematic diagram of the structure of a vehicle brake system according to the present invention.
FIG. 4 is a flowchart of a vehicle braking method based on a vehicle braking system according to the present invention.
Fig. 5 is a flowchart of another vehicle braking method based on a vehicle braking system according to the invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, the present invention provides a vehicle brake system, and in fig. 1, the system may include:
the device comprises an inflating device 11, a detecting device 12, an air storage cylinder 13, a control device 14 and a braking device 15, wherein the inflating device 11, the detecting device 12, the air storage cylinder 13, the control device 14 and the braking device 15 are sequentially connected through an air loop in sequence;
wherein the control device 14 comprises a remote control module 141, wherein the remote control module 141 is configured to receive a remote instruction from a user and control the gas flow rate of the gas circuit based on the remote instruction to control the operation state of the brake device 15; the detection device 12 is configured to detect the internal pressure of the air reservoir 13 and send a feedback signal corresponding to different internal pressures to the inflator 11 according to the internal pressure, so that the inflator 11 performs an inflation operation or stops the inflation operation based on the feedback signal.
The principle and the effect of the system are as follows: in the above system, the remote control module 141 in the control device 14 can receive a remote command from a user and control the flow rate of gas in the gas circuit according to the remote command, thereby achieving the effect of changing the operating state of the brake device 15 and implementing the remote vehicle braking function in a remote control manner. Meanwhile, the system formed by sequentially connecting the air charging device 11, the detection device 12, the air storage cylinder 13, the control device 14 and the brake device 15 through the air circuit can realize the brake control of the vehicle in a pneumatic mode, so that compared with the mode in the prior art, the brake control intensity can be higher, and the brake control requirement of the vehicle under the condition of higher-speed running can be met.
In one embodiment, as shown in fig. 2, the control device 14 further includes: a manual control module 142, the manual control module 142 being configured to control a gas flow rate of the gas circuit to control an operation state of the brake device 15 after receiving an external force applied by a user, the manual control module 142 and the remote control module 141 being connected in parallel in the gas circuit;
wherein the manual control module 142 comprises: a pressure sensor 1421 and a valve regulator 1422; the pressure sensor 1421 is configured to collect pressure applied by a user, and obtain a valve adjustment signal corresponding to the pressure; an air inlet of the valve adjuster 1422 is connected to the air reservoir 13, an air outlet of the valve adjuster 1422 is connected to an air inlet of the braking device 15, and the valve adjuster 1422 is configured to receive the valve adjusting signal and perform a valve adjusting operation according to the valve adjusting signal to change an air flow rate at the air outlet of the valve adjuster 1422 to control the braking device 15.
It should be noted that in practical applications, when the manual control module is connected in parallel with the remote control module, the manual control module may be connected to the braking device through the shuttle valve, wherein two ends of the manual control module are respectively connected to the output end of the manual control module and the output end of the remote control module, and the third end of the manual control module is connected to the braking device. When any input end of the manual control module enters gas, the input end at the other end can be controlled to be closed, so that the effect that one of the manual control module and the remote control module controls the braking device is achieved.
The beneficial effects of the above technical scheme are that: the pressure sensor 1421 may generate a valve adjusting signal corresponding to the pressure after the pressure is applied by the user, and then the valve adjuster 1422 may perform a valve adjusting operation according to the valve adjusting signal to change the gas flow rate to control the operation state of the brake device 15, thereby achieving the effect of manually controlling the brake operation of the vehicle based on the user, enabling the vehicle brake system to implement not only the brake control by a remote manner, but also the brake control based on the manual operation, and ensuring the implementation of the vehicle brake function of both remote control and manual operation.
In addition, the manual control module 142 may be an electric control master valve, and both the pressure sensor 1421 and the valve adjuster 1422 may be disposed in the electric control master valve, and the specific functions and using manners are consistent with those in the above embodiments, and are not described herein again.
In one embodiment, as shown in fig. 2, the manual control module 142 further includes: a signal modification interface 1423;
the signal correction interface 1423 is configured to connect and communicate with an ABS anti-lock brake system of a vehicle, and the signal correction interface 1423 is further configured to send the valve adjustment signal to the ABS anti-lock brake system after the pressure sensor 1421 generates the valve adjustment signal;
the signal modification interface 1423 is further configured to receive a modification signal of the ABS anti-lock brake system, and send the modification signal to the valve adjuster 1422, where the modification signal is obtained by modifying the valve adjustment signal based on environmental information by the ABS anti-lock brake system;
the valve regulator 1422 is further configured to, after receiving the correction signal, perform a valve regulating operation according to the correction signal to change a gas flow rate from the gas outlet of the valve regulator 1422 to control the braking device 15.
The beneficial effects of the above technical scheme are that: by setting the signal correction interface 1423 in the manual control module 142, it can be ensured that the brake control process can be performed by manual operation, it can be ensured that the ABS anti-lock brake system corrects the brake operation issued by the user based on the environmental information, thereby performing the brake control by using the corrected signal obtained after the correction, thereby avoiding that the brake behavior which does not meet the actual requirement is performed under the condition that the environment and road condition detected by the ABS anti-lock brake system are not met when the user performs the brake control by manual operation, and the brake operation which meets the actual environment is corrected, thereby improving the safety of the brake control effect.
In one embodiment, the remote control module 141 includes: a receiver 1411, a processor 1412, and a proportional solenoid valve 1413;
the receiver 1411 is configured to receive a remote instruction from a user and send the remote instruction to the processor 1412;
the processor 1412 is configured to generate a control command and send the control command to the proportional solenoid valve 1413 after receiving the remote command;
the proportional solenoid valve 1413 is configured to control an operation state of the brake device 15 by controlling a gas flow rate of the gas circuit after receiving the control instruction.
The beneficial effects of the above technical scheme are that: the receiver 1411 is used for receiving a remote instruction of a user and sending the remote instruction to the processor 1412, and the processor 1412 generates a corresponding control instruction to control the proportional solenoid valve 1413, so that the proportional solenoid valve 1413 can control the size of an internal gas passage based on the instruction after receiving the control instruction, thereby realizing the gas flow rate of a gas loop, and adjusting the operating state of the braking device 15 by using a variation method of the gas flow rate, thereby realizing the effect of converting the remote instruction of the user into the corresponding control instruction and realizing the remote braking control, and meanwhile, the processor 1412 processes the remote instruction to obtain the control instruction, thereby realizing the identification and processing of a complex instruction issued by the user, ensuring the accuracy of the processing process and laying a foundation for the guarantee of the subsequent braking control.
It should be noted that, in the above embodiment, the processor 1412 may be a processing unit disposed in a vehicle controller in a vehicle, or any electronic device having a data processing function and being the same or similar to the processing unit and capable of controlling the vehicle operation, and is not limited herein and may be specifically selected according to actual needs.
In one embodiment, the remote control module 141 includes: a command modification interface 1414;
the command correction interface 1414 is connected with the processor 1412, and the command correction interface 1414 is used for connecting and communicating with an ABS anti-lock brake system in a vehicle, and sending the control command to the ABS anti-lock brake system after the processor 1412 generates the control command;
the command correction interface 1414 is further configured to receive a correction command fed back by the ABS anti-lock braking system, and send the correction command to the processor 1412, where the correction command is obtained by correcting the control command based on the environmental information by the ABS anti-lock braking system;
the processor 1412 is further configured to send the correction command to the proportional solenoid valve 1413 after receiving the correction command.
The beneficial effects of the above technical scheme are that: the effect of sending the control command generated by the processor 1412 to the ABS of the vehicle and sending the correction command obtained by correcting the control command from the ABS based on the environmental information to the processor 1412 can be achieved by the command correction interface 1414, thereby ensuring that the corresponding control command can be generated based on the remote command issued by the user, and the ABS can be corrected based on the environmental information and brake control can be executed according to the corrected correction command, ensuring that the brake control effect can better conform to the actual environmental situation when brake control is executed remotely, and ensuring the safety of brake control.
In one embodiment, the detection device 12 comprises: an unloading valve 121;
the unloading valve 121 is configured to detect the internal pressure of the air reservoir 13 to obtain pressure information, generate a feedback signal corresponding to the pressure information, and send the feedback signal to the inflator 11, so as to control the inflator 11 to perform an inflation operation or stop the inflation operation.
The working principle and the effect of the technical scheme are as follows: the air storage cylinder is subjected to pressure detection through the unloading valve, and the corresponding feedback signal is generated according to the detection result to control the operation state of the air charging device, so that the operation based on the real-time pressure condition of the air storage cylinder can be ensured when the air charging device is subsequently utilized to perform corresponding operation, the stability of the air pressure in the air storage cylinder is ensured, and the safety problem caused by over-charging is avoided.
It should be noted that, in the above embodiment, a dedicated processor for analyzing and processing the pressure detection result may be disposed in the unloading valve, so that after the unloading valve detects the internal pressure of the air cylinder through the built-in detection module, the unloading valve may directly analyze and process the internal pressure according to the real-time detected pressure according to the dedicated processor disposed in the unloading valve; alternatively, a dedicated interface module may be provided, and the interface module may be configured to transmit a pressure detection result to an external processing device after the internal pressure of the air cylinder is detected by the unloading valve through the built-in detection module, receive feedback information, and generate a corresponding feedback signal according to the feedback information. Specifically, the unloading valve may include, but is not limited to, any one of the above schemes, and is not specifically limited herein, and the required type may be selected according to actual situations.
In one embodiment, the detection device 12 may further include: an electronically controlled dryer 122;
the air inlet of the electronic control dryer 122 is connected to the inflator 11, the air outlet of the electronic control dryer 122 is connected to the air reservoir 13, and the electronic control dryer 122 is configured to dry the control input from the air inlet and output the dried air from the air outlet.
The beneficial effects of the above technical scheme are that: through set up automatically controlled desicator in detection device, can ensure to carry out drying process with the air of inputing to the gas receiver when can detecting the function realization, avoid carrying out the condensation behind the gas receiver because of having vapor in the gas, corrode the gas receiver to holistic aridity in the follow-up gas return circuit has been guaranteed, the whole life-span of above-mentioned system has been improved.
In one embodiment, the inflator 11 may further include: an electric air compressor 111 and a condenser 112; wherein, the electric air compressor 111 is connected with the condenser 112 through a gas loop;
the electric air compressor 111 is used for compressing air after air suction and sending the compressed air to the condenser 112, and the condenser 112 is used for performing condensation operation after receiving the compressed air so as to filter out target gas in the compressed air, wherein the target gas comprises water vapor.
In addition, the electric air compressor is a device capable of sucking the outside air and outputting the outside air under pressure, and can provide high-pressure air with the maximum pressure of 1MPa, thereby meeting the requirements of various practical situations.
The principle and the beneficial effects of the technical scheme are as follows: by arranging the condenser in the air charging device, the water vapor in the air can be condensed and removed when the air charging device outputs the air by using the electric air compressor, the influence on each device in the braking system is reduced, and the whole service life of the system is prolonged.
In one embodiment, the system further comprises: the gas storage device comprises a pipeline protection valve 17, wherein the pipeline protection valve 17 is arranged at a gas inlet of the gas storage cylinder 13, and the pipeline protection valve 17 is used for adjusting a built-in valve to isolate a branch with abnormal gas pressure from a gas loop when the fact that the branch with abnormal gas pressure exists in the gas loop is detected.
Specifically, in practical application, the pipeline protection valve may be a four-pipeline protection valve, four pressure-limiting check valves are arranged according to a certain relationship, and other functional mechanisms are added to part of the four-pipeline protection valve, so that the shunt supply of the air source in the brake system can ensure that each loop can work independently and normally. Under normal conditions, the four-circuit protection valve can be actually understood as a five-way joint, wherein one end of the five-way joint is an inlet, and the other four ports of the four-way joint are outlets, so that the four-way joint only plays a role in protection when faults such as breaking, leakage and the like occur in a certain circuit (namely, an abnormality occurs).
The working principle of the technical scheme is as follows: different branch joints are arranged in the pipeline protection valve, so that each branch in the gas loop is mutually opened by the pipeline protection valve, and meanwhile, when the condition of abnormal gas pressure exists in any branch, the corresponding branch can be closed by the pipeline protection valve, so that the branch with abnormality is isolated from the whole gas loop.
The beneficial effects of the above technical scheme are that: the pipeline protection valve is arranged at the air inlet end of the air storage cylinder, so that when any one or more branches in the air loop have problems, the branches can be prevented from being influenced mutually, the stability of the whole air loop is ensured, and the stability of a braking system is ensured.
Further, as a way of implementing the brake system described in the above example, the system shown in fig. 3 may be used, and the structure and function principle thereof may be as follows:
1. the electric air compressor is used as an air source and provides high-pressure air with the pressure of 1 MPa.
2. And the high-pressure gas is preliminarily cooled by a condenser to remove partial moisture impurities and then enters a control dryer for further drying and purification, so that the dry high-pressure gas required by the system is obtained.
3. The gas flows through a four-loop protection valve which is used as a five-way pipe joint when the pressure of the gas is higher than 0.6MPa, and the gas inlet and the gas outlet are all communicated; when the pressure is lower than 0.6MPa, the four branches at the outlet are automatically separated, so that the function independence and the good performance of the single loop are ensured.
4. And the gas continuously flows into the gas storage cylinders arranged in each loop for normal storage of the common gas of the system, and the volume of each loop gas storage cylinder is determined according to the gas demand accounting.
5. When the air pressure in the air cylinder reaches the specified pressure of the system, the electric air compressor stops working according to the low level signal of the electric control dryer; when the air pressure in the air cylinder is reduced to the turn-off pressure, the electric control dryer outputs 24V high level, and the electric air compressor recovers to work, so that the energy is saved, the efficiency is high, and the timeliness of air utilization can be guaranteed within a specified range by the system pressure.
6. The vehicle is provided with a signal receiver, an ECU (electronic control unit) and a CAN (controller area network) bus, and the signal receiver, the ECU and the CAN bus are used for receiving signals of the handheld remote controller and controlling the proportional solenoid valve through a processor arranged in the ECU.
7. The electric control brake master valve and the proportional solenoid valve are connected in parallel, air supply is from the air storage cylinder, when the electric control brake master valve is stepped down or the proportional solenoid valve is controlled by a hand-held remote controller, air can enter the relay valve through the shuttle valve, meanwhile, the braking process can also be transmitted to an ABS anti-lock braking system through a preset interface so as to adjust the braking operation, the adjusted braking operation is controlled in an air loop so as to control air chambers in the front and rear groups of braking devices, and the vehicle brakes. The brake device is composed of a relay valve, a regulator and a controller (air chamber), and the composition form of the brake device can be shown as a schematic diagram in fig. 3.
8. Because of adopting electric control parts such as the electric air compressor and the like, the high-pressure air can be independently supplied, and special use requirements such as silent running and the like are met.
9. The service brake can be controlled remotely through a manually operated electric control brake master valve, manual and automatic dual-purpose is realized, and the service brake can be used in teaching training, hazard tests and other occasions. The air braking running braking moment is larger than the parking moment, and more effective emergency stop can be realized.
10. Because the braking system can be adjusted based on the ABS when braking is carried out, the normal use of the ABS is not influenced, and the brake system has better adaptability to different road conditions such as wet and slippery road surfaces.
Further, an embodiment of the present invention further provides a vehicle braking method based on a braking system, where the braking system is as described in any of the above embodiments, and a specific composition structure is not described again, and in the system, a method applied to a processor is as shown in fig. 4, and includes:
401. and when a remote instruction is received, generating a control command according to the remote instruction.
The remote instruction is issued by a user remotely and used for indicating the execution of the braking operation.
402. And generating a control command corresponding to the remote instruction according to the remote instruction.
403. And sending the control command to a proportional solenoid valve so as to control a brake device to execute brake operation corresponding to the control command through the proportional solenoid valve.
Thus, the method can ensure the generation of the control command through the remote command and ensure the effect of controlling the proportional solenoid valve in a command form, thereby realizing the remote braking function.
Further, before sending the control command to the proportional solenoid valve, the modification may be performed by an ABS anti-lock braking system, which may specifically include:
sending the control command to an ABS;
the sending of the control command to the proportional solenoid valve so as to control the braking device to execute the braking operation corresponding to the control command through the proportional solenoid valve may specifically be: and after receiving a correction command fed back by the ABS, sending the correction command to a proportional solenoid valve so as to control a brake device to execute a brake operation corresponding to the correction command through the proportional solenoid valve, wherein the correction command is obtained after the ABS corrects the control command based on environmental information.
Furthermore, in the process of correction, in order to avoid the failure of the correction instruction, a time limit can be set for the correction instruction, that is, the correction instruction is also provided with a command time limit;
after the sending the control command to an ABS, the method further comprises:
and judging whether the command time limit is exceeded or not according to the current moment, wherein the command time limit is used for defining whether a correction instruction needs to be executed or not.
Thus, when the correction command fed back by the ABS anti-lock brake system is received while the brake control is being executed, sending the correction command to the proportional solenoid valve may include:
if the command time limit is judged to be exceeded according to the current moment, feeding back a command effective prompt to the ABS; and on the contrary, if the command time limit is judged to be exceeded according to the current moment, a correction instruction is requested to be formulated again to the ABS. Thus, whether the correction instruction can be executed or not based on the command time limit is ensured, and the timeliness of the correction of the ABS is ensured.
Further, an embodiment of the present invention further provides a vehicle braking method applied to the unloading valve processor as shown in fig. 5, where the method includes:
501. and collecting the internal pressure in the air storage cylinder to obtain pressure information.
502. And judging whether the pressure information is smaller than a back-off pressure threshold value.
And the threshold value of the back-closing pressure is the minimum value of the pressure of the air storage cylinder in the normal operation state. According to the judgment result, when the pressure information is smaller than the pressure threshold value, executing step 503; otherwise, go to step 504.
503. If the first feedback signal is less than the first feedback signal, a first feedback signal is generated.
Wherein the first feedback signal is used for controlling the inflator to carry out the inflation operation. At this time, since it is necessary to supplement the gas because the gas in the gas tank is insufficient at present, the first feedback signal for controlling the inflator to perform the inflation operation is output. Specifically, the first feedback signal may be high.
504. And if not, generating a second feedback signal.
Wherein the second feedback signal is used for controlling the inflator to stop the inflation operation.
When the pressure information is determined to be greater than or equal to the turn-off pressure threshold value, the fact that the gas in the gas storage cylinder is sufficient currently is indicated, gas supplement is not needed, and therefore a second feedback signal for controlling the inflation device to stop inflation is output. Specifically, the first feedback signal may be low.
Through the steps, the pressure of the air storage cylinder can be detected by the special processor of the unloading valve, the corresponding feedback signals are fed back according to the detection result, the first feedback signals and the second feedback signals respectively represent and control the inflating device to perform inflating operation and control the inflating device to perform inflating stopping operation, the inflating device can be controlled to perform inflating or stop inflating in real time based on the pressure value of the air storage cylinder, and therefore energy conservation and high efficiency can be achieved, and the timeliness of gas utilization can be guaranteed by the system pressure within a specified range.
Further, embodiments of the present invention also provide a computer-readable storage medium storing machine executable instructions, which, when invoked and executed by a processor, cause the processor to execute the method of any one of the preceding embodiments.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A vehicle braking system, comprising:
the device comprises an inflating device, a detection device, an air storage cylinder, a control device and a braking device, wherein the inflating device, the detection device, the air storage cylinder, the control device and the braking device are sequentially connected through an air loop in sequence;
the control device comprises a remote control module, wherein the remote control module is used for receiving a remote instruction of a user and controlling the gas flow rate of the gas circuit based on the remote instruction so as to control the operation state of the brake device;
the detection device is used for detecting the internal pressure of the air reservoir and sending feedback signals corresponding to different internal pressures to the inflation device according to the internal pressure, so that the inflation device can perform inflation operation or stop inflation operation based on the feedback signals.
2. The vehicle brake system according to claim 1, characterized in that the control device further includes: the manual control module is used for controlling the gas flow rate of the gas loop after receiving an external force applied by a user so as to control the operation state of the braking device, and the manual control module and the remote control module are connected in parallel in the gas loop;
wherein the manual control module comprises: pressure sensors and valve regulators;
the pressure sensor is used for collecting pressure applied by a user and obtaining a valve adjusting signal corresponding to the pressure;
the air inlet of the valve adjuster is connected with the air storage cylinder, the air outlet of the valve adjuster is connected with the air inlet of the braking device, and the valve adjuster is used for receiving the valve adjusting signal and executing valve adjusting operation according to the valve adjusting signal so as to change the air flow rate of the air outlet of the valve adjuster to control the braking device.
3. The vehicle braking system of claim 2, wherein the manual control module further comprises: a signal correction interface;
the signal correction interface is used for being connected and communicated with an ABS (anti-lock brake system) of a vehicle, and is also used for sending the valve regulating signal to the ABS after the pressure sensor generates the valve regulating signal;
the signal correction interface is further configured to receive a correction signal of the ABS anti-lock braking system and send the correction signal to the valve adjuster, where the correction signal is obtained by correcting the valve adjustment signal based on environmental information by the ABS anti-lock braking system;
the valve regulator is further used for executing valve regulation operation according to the correction signal after receiving the correction signal so as to change the gas flow rate from the gas outlet of the valve regulator to control the braking device.
4. A vehicle braking system according to any one of claims 1 to 3 wherein the remote control module includes: the device comprises a receiver, a processor and a proportional solenoid valve;
the receiver is used for receiving a remote instruction of a user and sending the remote instruction to the processor;
the processor is used for generating a control instruction and sending the control instruction to the proportional solenoid valve after receiving the remote instruction;
and the proportional solenoid valve is used for controlling the operation state of the braking device by controlling the gas flow rate of the gas loop after receiving the control instruction.
5. A vehicle braking system according to claim 4 wherein the remote control module comprises: a command modification interface;
the command correction interface is connected with the processor and is used for being connected with and communicating with an ABS (anti-lock brake system) in a vehicle, and after the processor generates the control command, the control command is sent to the ABS;
the command correction interface is further used for receiving a correction command fed back by the ABS and sending the correction command to the processor, wherein the correction command is obtained by correcting the control command by the ABS based on environmental information;
and the processor is also used for sending the correction command to the proportional solenoid valve after receiving the correction command.
6. The vehicle braking system according to claim 5, characterized in that the detection means includes: an unloading valve;
the unloading valve is used for detecting the internal pressure of the air storage cylinder to obtain pressure information, generating a feedback signal corresponding to the pressure information, and sending the feedback signal to the inflating device so as to control the inflating device to perform inflating operation or stop inflating operation.
7. A vehicle braking method based on a vehicle braking system, the vehicle braking system being a system according to any one of claims 1-6, applied to a processor, comprising:
when a remote instruction is received, generating a control command according to the remote instruction; the remote instruction is issued by a user remotely and used for indicating the execution of the braking operation;
generating a control command corresponding to the remote instruction according to the remote instruction;
and sending the control command to a proportional solenoid valve so as to control a brake device to execute brake operation corresponding to the control command through the proportional solenoid valve.
8. The vehicle braking method according to claim 7, characterized in that before said sending of said control command to a proportional solenoid valve, the method further comprises:
sending the control command to an ABS;
the sending the control command to a proportional solenoid valve so as to control a brake device to execute a brake operation corresponding to the control command through the proportional solenoid valve comprises:
and after receiving a correction command fed back by the ABS, sending the correction command to a proportional solenoid valve so as to control a brake device to execute a brake operation corresponding to the correction command through the proportional solenoid valve, wherein the correction command is obtained after the ABS corrects the control command based on environmental information.
9. A vehicle braking method based on a vehicle braking system, the vehicle braking system being a system according to any one of claims 1-6, applied to an unloader valve processor, comprising:
collecting the internal pressure in the air storage cylinder to obtain pressure information;
judging whether the pressure information is smaller than a back pressure threshold value, wherein the back pressure threshold value is the minimum value of the pressure of the air storage cylinder in a normal operation state;
if the first feedback signal is smaller than the second feedback signal, generating a first feedback signal, wherein the first feedback signal is used for controlling the inflating device to perform inflating operation;
and if the output signal is not less than the preset value, generating a second feedback signal, wherein the second feedback signal is used for controlling the inflating device to stop inflating.
10. A computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of claim 7-8 or 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011187698.4A CN112277908A (en) | 2020-10-30 | 2020-10-30 | Vehicle braking system, vehicle braking method based on vehicle braking system and storage medium |
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| CN202011187698.4A CN112277908A (en) | 2020-10-30 | 2020-10-30 | Vehicle braking system, vehicle braking method based on vehicle braking system and storage medium |
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Application publication date: 20210129 |