HK1228857A1 - Vehicle brake management device - Google Patents

Abstract

A vehicle brake management device is disclosed. The vehicle brake management device of the present invention: detects, in real time, whether the brake performance of a vehicle in motion is abnormal such that a driver or a mechanic can easily check the abnormality, thereby identifying causes thereof according to a brake failure, and can repair or replace abnormal parts; displays an alert when a brake system malfunctions, particularly when in motion, so as to enable the driver to check the malfunction; and prevents starting so as to disable operations when an engine restarts after the operation has finished, thereby remarkably reducing the risk for the occurrence of an accident and increasing vehicle reliability to consumers.

Description

Vehicle brake management device

Technical Field

The present invention relates to a vehicle brake management apparatus for determining in real time whether or not an abnormality occurs in a vehicle brake system, and more particularly, to a vehicle brake management apparatus for monitoring in real time whether or not abnormality occurs in a plurality of components constituting a brake system, and for issuing an alarm to the corresponding components to guide replacement of the components when abnormality occurs in the components, thereby preventing a safety accident from occurring in advance due to a failure in braking performance while a vehicle is traveling.

Background

Generally, a brake device of a vehicle in deceleration and stop running is constituted by a wheel brake including a brake pedal, which is operated by a driver; a booster for increasing the pedal force of the braked pedal as an amplification factor; a master cylinder for generating hydraulic pressure by pressurizing oil with a supercharger; and a wheel cylinder for controlling the wheel by the master cylinder.

The brake pedal is provided with an operating point as a center by using a lever principle, and when a driver steps on the pedal, a force applied to a push rod from a fixed point pushes a piston of a master cylinder open through a booster to generate a hydraulic pressure, and the hydraulic pressure is transmitted to each wheel brake in a predetermined manner to apply a braking force.

The booster is a device for doubling the pressure of the driver transmitted from the brake pedal to the master cylinder, that is, an amplification factor of the braking operation force is increased, and an indirect operation method of a hydraulic vacuum brake method for operating the booster by providing a separate vacuum compressor is applied to a large truck or a heavy-duty vehicle, and a direct operation method of a master vacuum brake method for operating the booster by using vacuum obtained from an intake manifold of an engine is used in a general automobile.

The master cylinder converts a force of stepping on the brake pedal into a hydraulic pressure, and transmits brake fluid and the hydraulic pressure generated by the piston to the wheel cylinder through the brake pipe, and the piston in the wheel cylinder generates a braking force by pushing the brake shoe or the brake pad to the wheel disc or the wheel pad by the hydraulic pressure. The master cylinders are divided into a tandem type in which two master cylinders are arranged in series, a tandem master cylinder with a center valve, a residual check valve and the like, in order to ensure the defect and improve safety, the tandem type is characterized in that the two master cylinders are arranged in series, the pressure of a line in a normal state is increased when a line on one side of each of pistons with different diameters is damaged to ensure the phenomenon of lack of braking force, the tandem master cylinder with the center valve is used for a vehicle provided with an anti-lock brake system, so that the center valve arranged on the piston performs the function of a compensation port instead, and the residual check valve is arranged in a brake pipe or the master cylinder and the brake pipe or the master cylinder when a ring seal is used on a wheel cylinder of a drum brake.

In a vehicle equipped with a wheel brake for braking front and rear wheels to stop and decelerate, a booster for generating a brake fluid pressure to transmit an operating pressure to a wheel brake side, and a master cylinder, when a driver steps on a brake pedal, the booster amplifies a small force applied to the brake pedal by transmitting the brake fluid pressure to the booster, the master cylinder, and the wheel brake; a master cylinder that converts a large force into a hydraulic pressure without being affected by the distance of a brake device to regularly transmit a pressure; a wheel brake includes a hydraulic cylinder having a wide area and a brake pad having excellent frictional force, so that a large force is generated in the transmitted hydraulic pressure.

On the other hand, since the braking performance of the vehicle is directly related to safety, the manufacturer detects the components constituting the brake system.

The prior art technology for testing the set performance is disclosed in korean patent No. 10-0405569, which discloses a brake performance evaluation test device, and claim 1 describes a brake performance evaluation test device including: a wheel speed sensor for detecting whether the vehicle is running; a pedal force sensor for detecting whether the brake pedal is actuated; a pressure sensor for detecting a brake pressure supplied through a brake pipe when a braking force is generated for a running vehicle; an electronic control unit for inputting a target brake pressure set according to the conditions and types of the brake performance evaluation test, inputting a target time required for reaching the target pressure, and inputting a brake pressure holding time to hold the target brake pressure to the end of braking in a specified manner; an auxiliary brake hydraulic device connected to the brake pipe, and generating an auxiliary brake hydraulic pressure while being selectively driven according to control of the electronic control unit; a first pressure control valve for controlling the opening path according to the control of the electronic control unit so that the brake fluid pressure generated by the operation of the brake pedal and the auxiliary brake fluid pressure generated by the operation of the auxiliary brake fluid pressure device are selectively supplied to the brake main body side according to a brake performance evaluation test procedure; and a plurality of second pressure control valves provided in the brake pipe connected to the brake main body of the front wheel and the brake pipe connected to the brake main body of the rear wheel, respectively, and selectively opened and closed by the control of the electronic control unit according to the evaluation test procedure of the braking performance.

The brake performance evaluation test device according to the related art can develop a vehicle having excellent brake performance by calculating and collecting data of brake performance in a vehicle development step, but cannot confirm an abnormal state of a plurality of structures constituting a brake system. That is, the conventional brake performance evaluation test device cannot confirm the brake performance state of a normal vehicle.

Further, korean laid-open patent publication No. 10-0348040 discloses a "brake booster performance test device" as a prior art, and claim 1 discloses a "brake booster performance test device, including: a fixing member; an arm member bracket having one side hinge-coupled to a starting lever of the brake booster to move and the other side rotatably fixed with an arm member hinge-coupled to the arm member; a supercharger bracket provided with an opening part for a starting rod of the supercharger to pass through; a mounting unit for mounting the arm member and the supercharger on the fixing member at a predetermined distance; a vacuum unit for making the interior of the supercharger in a negative pressure state; and a brake checking unit for detecting an appropriate braking state of the wheel according to the operation of the supercharger. "

The performance test device for the brake booster with the structure can confirm the performance of the brake booster before being installed on a vehicle, so that the use of defective products is prevented in advance, but the performance can not be judged to be reduced when the brake booster is used on the running vehicle.

However, most of conventional vehicle brake performance detection devices are used to evaluate the performance of each component constituting a brake system in a vehicle manufacturing process, or determine whether or not a component is defective before the component is mounted, and it is not possible to confirm whether or not the brake performance of a vehicle shipped from a factory is abnormal. That is, while the vehicle is traveling with the loss of each component causing a problem of performance degradation or damage, the driver is provided with information on the number of engine revolutions, the engine temperature, the fuel amount, the battery state, the coolant temperature, the speedometer, and the like of the vehicle in real time, but the driver is not provided with information on the braking performance for stopping deceleration at all, and therefore, a serious traffic accident is caused when a brake system failure occurs during traveling. In addition, the safety check which is regularly carried out only confirms the brake lamp and the brake oil quantity, and does not detect the brake performance.

Therefore, the vehicle is operated in a state where abnormality of the brake system cannot be confirmed, resulting in no safety guarantee for the driver at all.

Although the braking force is excellent when the vehicle is shipped from the factory but is reduced with time, the driving force of the engine is regularly managed from the shipment of the vehicle to the scrapping so that the performance can be maintained as specified. That is, the running performance of the vehicle is maintained through regular vehicle inspection, but the braking performance of the vehicle is not managed without detection criteria at present, and therefore, a countermeasure is urgently needed.

Disclosure of Invention

Technical problem to be solved

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle brake management device that can confirm whether a brake system of a traveling vehicle is abnormal or not in real time, and can prevent a safety accident from occurring due to a failure of the brake system in advance.

The present invention also provides a vehicle brake management apparatus that prevents a safety accident from occurring and improves reliability of braking performance of a vehicle by preventing the vehicle from being unable to travel when restarting if the braking performance does not reach a reference value.

(II) technical scheme

To achieve the object, a vehicle brake management apparatus according to a preferred embodiment of the present invention is characterized by comprising: a brake pedal which is subjected to pedal force of a driver; a booster for multiplying the pedal force in conjunction with the pedal force of the brake pedal as an amplification factor; a master cylinder connected to a booster to generate an operating pressure by pressurizing oil; a wheel cylinder connected to the master cylinder to control a disc of a disc type wheel piece having a wheel; a pedal force sensor disposed at one side of the brake pedal to detect a pedal force; a vacuum sensor that detects a vacuum pressure in the supercharger; a pressure sensor that detects a pressure of the master cylinder; a disc sensor for measuring a wear degree of the disc type disc; and the controller is connected with the pedal force sensor, the vacuum sensor, the pressure sensor and the vehicle sheet sensor to input detection values, compares the detection values with an input reference set value and judges whether the detection values are abnormal or not, and outputs the result as a control signal.

As a preferable feature of the present invention, the controller supplies at least one or more of information of the processing result value, the detected value of the pedal force sensor, the detected value of the vacuum sensor, the detected value of the pressure sensor, and the detected value of the vehicle body sensor to the driver in real time, and is connected to a display unit including one or two of a display panel for displaying the information on a screen and a speaker for outputting the information in an audible manner.

In a preferred feature of the present invention, the controller is connected to an external measuring device and includes a connector for providing information on at least one or two or more of a processing result value, a pedal force sensor detection value, a vacuum sensor detection value, a pressure sensor detection value, and a vehicle body sensor detection value.

In a preferred another feature of the present invention, the controller includes one or more of an input unit, a calculation unit, an output unit, and a storage unit, wherein the input unit inputs the respective detection values from the pedal force sensor, the vacuum sensor, the pressure sensor, and the sheet sensor; a calculation unit for comparing the detection value inputted from the input unit with an inputted reference setting value and performing post-processing; an output unit that outputs the information processed by the calculation unit; and a storage unit connected to the input unit, the calculation unit, and the output unit to receive and store information.

As a preferred further feature of the present invention, the controller includes a start controller that selectively controls to prevent the vehicle from being started based on the processing result value.

(III) advantageous effects

The vehicle brake management device according to the present invention detects whether the braking performance of a running vehicle is abnormal or not in real time, so that a driver or a serviceman can easily confirm the cause of a brake failure and can repair and replace accessories, thereby preventing a safety accident in advance.

Further, the present invention is directed to a vehicle in which an alarm is displayed to confirm a driver when an abnormality of a brake system is detected during driving, and the vehicle is stopped to stop driving when an engine is restarted after the driving is ended, thereby greatly reducing the risk of occurrence of an accident and improving the reliability of a vehicle consumer.

The features and advantages of the present invention will become more apparent from the accompanying drawings and the detailed description thereof. The terms or words within the scope of the specification and claims are not to be interpreted in a general sense, and the terms or concepts are properly defined for the most preferable method of explaining the present invention and are understood to be the meanings and concepts conforming to the technical idea of the present invention.

Drawings

Fig. 1 is a schematic configuration diagram of the configuration of a vehicle brake management device according to the present invention.

Fig. 2 is a block diagram for explaining the structure of a vehicle brake management apparatus according to the present invention.

Fig. 3 is a block diagram of the structure of a controller according to the present invention.

In the drawings

3: brake pedal, 5: supercharger, 7: a master cylinder,

9: brake pad, 10: pedal force sensor, 20: a vacuum sensor is arranged at the bottom of the vacuum chamber,

30: pressure sensor, 40: vehicle chip sensor, 50: a controller for controlling the operation of the electronic device,

51: input unit, 52: calculation unit, 53: an output part for outputting the output signal of the display device,

54: storage unit, 60: display unit

Detailed Description

Hereinafter, a vehicle brake management device according to the present invention will be described in detail with reference to the drawings, and first, the same or corresponding components will be denoted by the same reference numerals, and in describing the present invention, descriptions of related well-known structures and structures will be omitted to clarify the gist of the present invention.

Fig. 1 is a schematic configuration diagram of the overall configuration of a vehicle brake management device according to the present invention. The figure shows a brake pedal 3 constituting a brake system of a vehicle, a booster 5 which doubles a pedal force in conjunction with the brake pedal 3, a master cylinder 7 which is connected to the booster 5 and generates an operating pressure by pressurizing oil, a disc type wheel disc 9 which is connected to the master cylinder 7 and generates a wheel cylinder in frictional contact with a wheel according to the operating pressure, and shows a pedal force sensor 10, a vacuum sensor 20, a pressure sensor 30, a wheel disc sensor 40 which sense the state of each element constituting the brake system in real time, a controller 50 which receives sensed signals from a plurality of sensors and compares the sensed signals with a reference set value to output a control signal, a display unit 60 which is connected to an output end of the controller 50 and receives the control signal to display a processing result value, and a connector 70 which is an output port connectable to an external measuring device.

Fig. 2 is a block diagram for explaining a constitution of a vehicle brake management apparatus according to the present invention. The brake management device of the vehicle in the figure comprises a pedal force sensor 10 for sensing a pedal force signal of a brake pedal 3; a vacuum sensor 20 for sensing the vacuum pressure of the supercharger 5; a pressure sensor 30 for sensing the operating pressure of the master cylinder 7; a sheet sensor 40 for sensing the degree of wear of the disc sheet 9; a controller 50 for receiving the sensed signals from the plurality of sensors and performing control processing; a display unit 60 connected to the output terminal of the controller 50 to display an output value in real time; a connector 70 for connecting with external measurement equipment.

Fig. 3 is a block diagram for explaining the structure of a controller according to the present invention. A controller 50 comprising: an input unit 51 for inputting information sensed from the pedal force sensor 10, the vacuum sensor 20, the pressure sensor 30, and the vehicle body sensor 40; a calculating part 52 for comparing the induction value inputted from the input part 51 with the inputted reference set value; an output unit 53 for outputting the information processed by the calculation unit 52 to the outside; the storage unit 54 stores information of the input unit 51, the calculation unit 52, and the output unit 53.

The structure of the vehicle brake management apparatus according to the present invention is explained with reference to the above drawings.

The present invention senses whether a brake pedal 3, a booster 5, a master cylinder 7 and a disc type wheel 9 constituting a brake system of a vehicle are abnormal or not in real time, and provides information on braking performance to a driver by comparing the sensed information with a reference set value, and the present invention includes: a pedal force sensor 10 for detecting a pedal force of the brake pedal 3; a vacuum sensor 20 for detecting the vacuum level of the supercharger 5; a pressure sensor 30 for detecting an input value of the master cylinder 7; a sheet sensor 40 for detecting the degree of wear of the disc sheet 9; a controller 50 that receives the detected values from the plurality of sensors and performs processing; a display unit 60 for providing information to the driver in response to the result of the processing from the controller 50; and a connector 70 for connecting the information to an external measuring device.

The pedal force sensor 10 is provided on one side of the brake pedal 3 to detect a pedal force, detects an acting force when the driver steps on the brake pedal 3, and is applied by a controller 50 connected to an output end. The pedal force sensor 10 is a force by which the driver steps on the brake pedal, that is, a force for detecting the magnitude of the pedal force, and the pedal force sensor 10 is provided on one side of the brake pedal 3 to detect the pedal force. The pedal force sensor 10 may be implemented according to a known technique, and thus a detailed description thereof is omitted.

The vacuum sensor 20 is an inductive element for detecting a vacuum pressure in the supercharger 5, and based on an amplification pedal force when the driver steps on the brake pedal 3 or a measurement of a negative pressure applied to the supercharger 5 as an amplification element, applies the measured detection value to the controller 50 connected to the output end. The vacuum sensor 20 is provided in the supercharger 5 to detect a negative pressure as an electric signal, and if the vacuum pressure in the supercharger 5 can be detected, various known vacuum sensors can be applied, and thus detailed description thereof will be omitted.

The pressure sensor 30 is provided in the master cylinder 7 or on the output end side of the master cylinder 7 to detect a pressure sensing element, and the detected measurement value is applied to the controller 50 connected to the output end. The pressure sensor 30 can be implemented according to a known technique, and therefore, a detailed description thereof is omitted.

The disc sensor 40 measures a sensing element of the degree of wear of the disc type disc 9, detects the amount of wear provided on one side of the disc type disc 9, and applies the detected measurement value to the controller 50 electrically connected to the output terminal. The pad sensor 40 is called a brake wear sensor and is implemented according to a known technique, and therefore, a detailed description thereof is omitted.

The controller 50 is connected to the pedal force sensor 10, the vacuum sensor 20, the pressure sensor 30, and the vehicle body sensor 40, receives the sensing information, compares the sensing information with a reference set value input in advance, determines whether the sensing information is abnormal, and outputs the result as a control signal. A controller 50 comprising: an input unit 51 electrically connected to the sensor element and receiving a detection value; a calculation unit 52 for comparing the detection value inputted through the input unit 51 with a reference setting value inputted in advance and determining whether the detection value is abnormal or not; an output section 53 that applies the result information processed from the calculation section 52 to a display section 60 or a connector 70; the storage unit 54 is electrically connected to the input unit 51, the calculation unit 52, and the output unit 53, receives information, and stores the information.

On the other hand, the controller 50 includes a start controller that selectively controls the start of the vehicle based on the processing result value, and the start controller may be separately constructed or may use an ecu (electronic control unit) of the vehicle.

The display unit 60 is an element for providing the driver with the result information in real time after being connected to the output unit 53 of the controller 50, and the information provided to the driver includes the result information of the connection processing with the output unit 53 of the controller 50, that is, at least one or more of the processing result value of the controller, the pedal force sensor detection value, the vacuum sensor detection value, the pressure sensor detection value, and the vehicle body sensor detection value. The display unit 60 is preferably a device in which the speaker output and the visual information display panel are combined, in order to allow the driver to easily confirm that the braking performance includes one or more devices selected from the group consisting of a display panel for displaying the result information on a screen and a speaker capable of audibly recognizing whether the braking performance is poor.

The connector 70 is connected to the output unit 53 of the controller 50 so that a variety of known connectors, preferably an On-board diagnostics (OBD) connector provided On a vehicle as a basic connector, can be used as a connection port element for providing result information, that is, at least one or more of the processing result value of the controller, the pedal force sensor detection value, the vacuum sensor detection value, the pressure sensor detection value, and the blade sensor detection value, to external measurement equipment or measurement devices.

The vehicle brake management apparatus according to the present invention constituted by the above structure functions as follows.

When the engine is started for running the vehicle, the respective detection values are applied to the controller 50 according to the actions of the pedal force sensor 10, the vacuum sensor 20, the pressure sensor 30 and the vehicle body sensor 40, wherein the pedal force sensor 10 is arranged on one side of the brake pedal 3 and is subjected to the pedal force of the driver; a vacuum sensor 20 which is provided inside the supercharger 5 that generates a negative pressure in conjunction with the brake pedal 3 and measures the negative pressure; a pressure sensor 30 provided inside the master cylinder 7 connected to the booster 5 to generate an operating pressure to measure the pressure; and a blade sensor 40 provided in the disc blade 9 for measuring the degree of wear based on the friction between the master cylinder 7 and the wheel.

The controller 50 receives a reference pedal force value of the brake pedal 3, a reference negative pressure value of the booster 5, a reference working pressure value of the master cylinder 7, and a reference wear value of the disc 9, and compares the input reference set value with the sensed values input from the respective sensing elements to determine whether or not there is an abnormality. That is, the controller 50 is normally activated when the measured values input from the sensors are within the normal range or the allowable error range of the input set values, and outputs the bad information for the braking elements (brake pedal, supercharger, master cylinder, or disc brake pad) through the display unit 60 when the error exceeds the normal range, so that the driver can recognize the bad information.

While the preferred embodiments of the present invention have been described, it is not limited thereto, and it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims. The modifications or variations fall within the scope of the claims of the present invention.

Claims (5)

1. A vehicle brake management device is characterized in that at least one of a pedal force sensor, a vacuum sensor, a pressure sensor and a vehicle sheet sensor is provided for managing the braking of a vehicle, the pedal force sensor is arranged at one side of a brake pedal receiving the pedal force of a driver to detect the pedal force; the vacuum sensor is used for detecting vacuum pressure in the booster, and the booster is linked with the pedal force of the brake pedal to multiply the pedal force; a pressure sensor for detecting a pressure of a master cylinder connected to the booster to pressurize the oil and generate an operating pressure; a disc sensor for measuring a wear degree of a disc type disc piece of the disc type, the disc type disc piece being connected to the master cylinder and provided on a wheel side,

the controller is connected with at least one of the pedal force sensor, the vacuum sensor, the pressure sensor and the vehicle slice sensor to receive the detection value, so that the controller compares the detection value with the input reference set value to judge whether the detection value is abnormal or not, and outputs the result as a control signal.

2. The vehicle brake management device according to claim 1, wherein the controller provides information on at least one or more of the processing result value, the pedal force sensor detection value, the vacuum sensor detection value, the pressure sensor detection value, and the blade sensor detection value to the driver in real time, and is connected to a display unit including one or both of a display panel for displaying information on a screen and a speaker for outputting information in an audible manner.

3. The vehicle brake management device according to claim 1, wherein a connector is connected to the controller so as to supply at least one or more of information of a processing result value, a pedal force sensor detection value, a vacuum sensor detection value, a pressure sensor detection value, and a blade sensor detection value to an external measuring device.

4. The vehicle brake management device according to claim 1, wherein the controller includes one or more of an input unit, a calculation unit, an output unit, and a storage unit, wherein the input unit receives detection values from the pedal force sensor, the vacuum sensor, the pressure sensor, and the sheet sensor; a calculation unit for comparing the detection value inputted from the input unit with an inputted reference setting value and performing post-processing; an output unit that outputs the information processed by the calculation unit; and a storage unit connected to the input unit, the calculation unit, and the output unit to receive and store information.

5. The vehicle brake management device according to claim 1, wherein the controller includes a start controller that selectively controls to prevent the vehicle from being started according to the processing result value.