CN212447483U - Electronic hydraulic brake system with intelligent monitoring - Google Patents
Electronic hydraulic brake system with intelligent monitoring Download PDFInfo
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- CN212447483U CN212447483U CN202020890981.2U CN202020890981U CN212447483U CN 212447483 U CN212447483 U CN 212447483U CN 202020890981 U CN202020890981 U CN 202020890981U CN 212447483 U CN212447483 U CN 212447483U
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Abstract
The utility model relates to an electron hydraulic braking system with intelligent monitoring type includes electrical unit ECU, battery, insulating layer, brake block, brake disc, dust removal recess, wheel hub bolt hole, braking pincers, rotating electrical machines, distance sensor, liquid pressure sensor, displacement sensor. The utility model uses a sensor at the brake hydraulic pipeline and the brake pedal, simplifies the system structure, and improves the response speed and the safety of the brake system; moreover, a hole is dug in the brake caliper, and a large amount of heat insulation materials and a distance sensor are placed, so that the device can monitor the thickness of the brake pad and improve the driving intelligence; and the system is provided with six dust removal grooves on the surface of the brake disc, so that dust generated by braking can be removed in time, the heat dissipation of the brake disc can be increased, and the optimal braking performance of the brake disc is ensured. The utility model has the characteristics of response speed is fast, intelligent monitoring part etc, and this system has hydraulic braking failure safety mode simultaneously, and the security performance promotes greatly.
Description
Technical Field
The utility model belongs to the technical field of the car braking technique and specifically relates to an electron hydraulic braking system with intelligent monitoring type is related to.
Background
Electromotion and intellectualization are two trends in the development of automobiles nowadays. The automobile brake system is one of important components of an automobile, and along with the higher and higher requirements of people on the brake performance, the original pure mechanical structure brake is slowly changed into the electronic parking brake so as to improve the brake performance. Therefore, a Brake-By-Wire System (BBW) of an automobile has been developed in this context due to the limitation of the conventional Brake System in terms of the structure and principle to the improvement of the braking performance.
An electronic-Hydraulic Brake System (EHB) is a form of automobile wire control, retains the traditional Hydraulic Brake function and has relatively good reliability; meanwhile, as a new brake system, part of mechanical elements in the traditional brake system are replaced by electronic elements, so that the defects of the traditional design and principle are overcome, and the brake performance of the automobile can be greatly improved. The application of the sensor is gradually popularized, the combination of the sensor and the automobile brake effectively shortens the brake response time, and improves the automobile brake safety. However, the whole system still needs hydraulic components, and brake fluid cannot be removed, so that once the hydraulic system or the hydraulic components are in failure in the driving process, the automobile cannot be completely braked, and potential safety hazards are caused.
Chinese patent No. CN 209126713U discloses "an electronic hydraulic brake system with dual power source hydraulic pressure failure backup", which uses an electronic control unit ECU to send brake signals as the basis to control a motor to generate brake torque, then pushes a master cylinder push rod to build pressure, a hydraulic pressure sensor between each wheel cylinder can collect information in real time to upload, and combines four normally open solenoid valves to independently control the hydraulic pressure of each wheel cylinder, and two normally closed solenoid valves, a low pressure accumulator and a hydraulic pump can assist in rapid pressure reduction, so that the hydraulic pressure of a low pressure loop is stable, and can be used as a backup power source to establish the hydraulic pressure of the wheel cylinder. However, if a hydraulic pipeline or a hydraulic braking system fails and the backup power source also belongs to a hydraulic braking part, the backup braking function cannot be exerted, the braking force cannot meet the driving requirement, and the braking safety problem is easy to occur.
Chinese patent publication No. CN 203856934U discloses a "brake block thickness monitoring device", the device includes a first conductor, a second conductor and an output control terminal, one end electric connection voltage source of the first conductor, the other end of the one end electric connection first conductor of the second conductor, the other end ground connection of the second conductor, the second conductor is embedded in preset police boundary thickness department, when the brake block thickness is greater than preset police boundary thickness, the second conductor is conducted, when the brake block thickness reaches preset police boundary thickness, the second conductor is disconnected, though can play the effect of monitoring brake block thickness through the signal of telecommunication, but if the circuit short circuit is ageing, then monitoring device can thoroughly become invalid, and need frequently change monitoring device.
Chinese patent No. CN 109733368A discloses a brake-by-wire system for preventing failure and a control method thereof, in which an electronic control unit receives a brake pedal signal and a current signal collected by a hall sensor to control brake-by-wire and trigger an anti-failure unit, the brake unit is used to implement braking force to complete a braking process, the anti-failure unit is a mechanical hydraulic device, when brake-by-wire and electric control fail, the brake-by-wire unit responds quickly to provide reliable braking force, but if a hydraulic pipeline fails, the braking force cannot meet driving requirements, and a component for providing anti-failure braking force is a new problem.
The utility model discloses be equipped with displacement sensor in brake pedal stroke department, hydraulic pressure pipeline is equipped with liquid pressure sensor to the department of punching is equipped with distance sensor in the brake caliper inboard. The precision errors of the displacement sensor are respectively average linear error precision and maximum linear error precision:
average linear precision error: the calculation formula is { | + | maximum positive tolerance | + | maximum negative tolerance | }/2 { + | -average linear precision%;
maximum linear precision error: the maximum linear precision error is the maximum or minimum linear error;
the expression mode of the national standard of the precision of the displacement sensor is as follows: +/- (A + B/L1000). A is the subdivision accuracy, B is the pitch accuracy, and L is the length.
The precision comprises the root mean square of 3 indexes of linearity or nonlinearity + hysteresis + repeatability, and the root mean square of 5 indexes of increasing time drift, thermal stability and the like. The calculation of the average linear precision error and the maximum linear precision error can obtain that: the method has the advantages that the information is collected in real time through the sensor for detection, and compared with the traditional method for mechanically detecting the thickness of the brake pad, the accuracy and the response time of the monitoring system are improved.
And six dust removal grooves are further formed in the brake disc, so that the optimal braking performance of the brake disc is effectively guaranteed, and the ventilation and heat dissipation of the brake disc are accelerated. The further improvement of the system ensures the braking pressure of the automobile, and greatly improves the braking comfort and safety of the automobile.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an electronic hydraulic brake system with intelligent monitoring, which has the advantages of improving response speed, monitoring component status, ensuring optimal braking performance of a brake disc, and under the condition of failure of the hydraulic brake system, an electronic control unit ECU rapidly controls the electronic brake system, so that the electronic brake system provides all required braking force, and the braking safety of a vehicle is enhanced.
The utility model relates to an electron hydraulic braking system with intelligent monitoring type includes, automatically controlled unit ECU, brake pedal simulator, displacement sensor, power, liquid pressure sensor, brake disc, distance sensor, brake block, braking pincers, insulating layer and dust removal recess.
The electronic control unit ECU judges whether a driver takes a braking measure or not according to a signal uploaded by the displacement sensor, detects and identifies a hydraulic pressure signal uploaded by the hydraulic pressure sensor, and immediately recalculates the braking force required by the automobile if hydraulic braking fails (the hydraulic pressure sensor does not detect hydraulic pressure change), and all the braking force is borne by electronic braking force, so that the braking requirement is ensured, and the safety problem of automobile braking caused by insufficient or invalid braking force is avoided; and a hole has been made near the brake block in the inside of the caliper, the inside is equipped with insulating layer and distance sensor, distance sensor converts the distance of self position and brake disc into the signal and passes to the electronic control unit ECU and carries out contrastive analysis, in the braking process, the distance that distance sensor surveyed and the brake disc is exactly the brake block and the total distance of hole depth, through comparing with the threshold value data of original input, when the measured value is higher than the threshold value, then do not need to change the brake block, when the measured value equals or is less than the threshold value, electronic control unit ECU then reminds to change the brake block.
The displacement sensor is placed at the stroke position of the brake pedal, and converts different displacements generated by the brake pedal into different electric signals to be uploaded to the electronic control unit ECU; the hydraulic pressure sensor is arranged in the hydraulic pipeline, and the hydraulic pressure above the detection sensor is converted into an electric signal and further uploaded to the electronic control unit ECU for analysis and processing; distance sensor places in the inboard brake block of braking pincers other department of punching, and the main rigid structure of braking pincers is near the brake block position, so punch at one section of braking pincers and can not influence the rigidity of braking pincers, type a threshold value in advance among the electronic control unit ECU and regard as the contrast data of change brake block to in order to avoid the influence of the temperature in the braking process high to the sensor, downthehole a week is provided with a lot of proprietary thermal insulation material, is used for insulating sensor and the direct temperature conduction of braking pincers.
The dust removal recess is located the six curve grooves on brake disc surface, and the curve groove more satisfies the route of motion characteristics of dust in the motion process, can be timely clear away the piece dust of the brake block that appears at the braking in-process through six grooves, can increase the frictional force of car braking process, in the braking process, because the inertia of object and wind force urge the dust to discharge along the dust removal recess to the concave area of contact that has increased brake disc and air of dust removal groove, thereby accelerated the heat dissipation of brake disc.
Due to the adoption of the scheme, the utility model has the advantages of it is following.
1. The sensor is used for collecting information, and the information is analyzed and processed through the electronic control unit ECU, so that the response precision of the system is improved, the brake system runs stably, the brake force is ensured, and the comfort and the safety of the automobile in the brake process are improved.
2. Through installing distance sensor real-time supervision brake block additional in brake caliper department, replaced traditional mechanical monitoring's system, can gather distance information and then pass to the automatically controlled unit ECU through the sensor in real time and carry out analysis processes, come automatic warning navigating mate and change the brake block, to a great extent has improved the convenience of changing the brake block and the intelligent integration of car, has saved certain manpower, material resources.
3. The dust removal groove is designed on the brake disc, so that dust can be smoothly removed by utilizing the inertia of the dust and wind power, the optimal braking performance of the surface of the brake disc is ensured, the driving pleasure and the communication feeling of people and vehicles are improved, the heat dissipation of the brake disc is further accelerated, and the driving safety is improved.
Drawings
Fig. 1 is a front overall three-dimensional schematic view of the present invention.
Fig. 2 is a side overall three-dimensional schematic view of the present invention.
Fig. 3 is a three-dimensional schematic view of the brake pad of the present invention.
Fig. 4 is a schematic diagram of the sensor according to the present invention.
Reference numerals in the drawings denote:
1-a distance sensor 1; 2-brake block; 3-a metal sheet; 4-a heat insulation layer; 5-a vent hole; 6, a brake disc; 7-dust removal grooves; 8-hub bolt holes; 9-axle hole; 10-a wheel flange; 11-a brake caliper; 12-a brake caliper mounting bracket; 13-dc/ac power; 14-a rotating electrical machine; 15-distance sensor 2; 16-a liquid pressure sensor; 17-a displacement sensor; 18-electronic control unit ECU.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to fig. 1, 2, 3 and 4.
The hydraulic braking system mainly comprises the following aspects: various components including supplying, regulating the energy required for braking and improving the condition of the transmission medium; a control device: various components for generating braking action and controlling braking effect, such as a brake pedal; the transmission device comprises: the method comprises the steps of transmitting braking energy to various components of the brake, such as a brake master cylinder and a wheel cylinder; a brake: creating a component that impedes the motion or tendency of the vehicle to move. When the brake pedal is depressed, the piston master cylinder moves forward. The brake fluid in the cylinder generates pressure, and the oil is pressed into each brake wheel cylinder through an oil pipe. The piston of the wheel cylinder is expanded outwards to push the brake shoe to contact with the brake disc, so that the braking effect is generated.
When the hydraulic brake system of the automobile breaks down during running, a driver steps on the brake pedal to brake, the displacement sensor (17) below the brake pedal can monitor displacement signals due to certain displacement of the brake pedal, the displacement sensor (17) can convert the displacement signals into electric signals and upload the electric signals to the electronic control unit ECU (18), and the electronic control unit ECU (18) performs the next step of work. Meanwhile, as the electronic hydraulic brake system works by the cooperation of hydraulic brake and electronic brake, when a driver sends a brake command, the liquid pressure sensor (16) in the hydraulic pipeline also detects whether a liquid pressure signal is generated or not, or whether the generated signal meets a theoretical value or not, the liquid pressure sensor (16) converts the signal into an electric signal, when the liquid pressure sensor (16) detects that the electric signal is generated, the hydraulic brake system works normally, when the liquid pressure sensor (16) in the hydraulic pipeline does not detect that the electric signal is generated or detects that the electric signal is asynchronous and the signal strength is obviously different, the electronic control unit ECU (18) analyzes and judges the received information, immediately increases the rotating speed and the torque of the rotating motor (14) through the electronic brake system, further increases the brake force of the automobile, and at the moment, all the brake force required by the automobile is provided by the electronic hydraulic brake system, thereby preventing the occurrence of braking safety problems.
Meanwhile, a liquid pressure sensor (16) in the hydraulic pipeline can detect whether a signal is generated, when the liquid pressure sensor (16) detects that an electric signal is generated, the surface hydraulic brake system works normally, when the electric signal is not detected, an Electronic Control Unit (ECU) (18) can analyze and judge, the rotating speed of a rotating motor (14) is increased through an electronic brake system at once, and all braking force required by the automobile is provided by the electronic brake system, so that the occurrence of the braking safety problem is prevented.
The thickness of a new brake pad (2) is about 1.5cm generally, and the thickness is gradually thinned due to continuous friction in use. According to the suggestion of professionals, when the thickness of the brake pad (2) is only left about 1/3 (about 0.5cm), the owner needs to increase the self-checking frequency and prepare for replacement at any time, and when the thickness of the brake pad (2) is only left 0.3cm, the automobile has safety problems at any time in the braking process. When the brake pad (2) becomes thin, the braking response of the automobile also becomes slow, and the previous braking effect can be achieved only by pressing the brake pedal deeper and heavier. The automobile is at normal braking in-process, and brake block (2) can carry out normal wearing and tearing, has a brake block (2) thickness threshold value at electric control unit ECU (18), and the threshold value is set for 0.5cm, and when brake block (2) thickness is less than 0.5cm electric control unit ECU (18) can be through acousto-optic warning in order to remind the driver to change brake block (2). In the braking process of an automobile, a hole is drilled on the side face of a brake caliper (11), a distance sensor 2(15) in the hole monitors the distance from the position to a brake disc (6) in real time, the measured value at the moment is the total distance between the thickness of a brake pad (2) and the depth of the hole, the distance sensor 2(15) converts a distance signal into an electric signal and uploads the electric signal to an Electronic Control Unit (ECU) 18, the electronic control unit (ECU 18) compares the measured value with a threshold value for analysis, when the measured value is larger than the set threshold value, the ECU (18) does not act, the automobile is braked normally and a silent light alarm is given, when the measured value is less than or equal to the set threshold value, the brake block (2) is worn to be replaced, and the electronic control unit ECU (18) performs sound and light alarm to remind a driver to replace the brake block (2) in time so as to play a role in driving safety.
The braking distance of the automobile is related to various factors, and the influence on the braking performance of the brake pad (2) comprises the hardness, the strength, the abrasiveness of a friction material, the automobile tire, the actual contact area of the brake pad (2) and a brake disc and the like. The friction coefficient and the heat fading coefficient of the surface of the brake block (2) are also a great factor influencing the braking of the automobile. The car is at normal braking in-process, and brake block (2) carry out contact friction with brake disc (6), produce the piece dust and glue on brake block (2) surface to influence the coefficient of friction and the heat fading coefficient on brake block (2) and brake disc (6) surface, and then the brake performance and the safety of direct influence car. The dust removal groove (7) is arranged to solve the problem, in the process of contact friction, the brake pad (2) and the surface of the brake disc (6) generate fragment dust, when braking is continuously carried out, the brake pad (2) can be in contact friction with the brake disc (6) to further push the fragment dust to the dust removal groove (7), the fragment dust is discharged from the pipeline of the dust removal groove (7) by utilizing inertia of wind power and the dust, braking is continuously carried out, the braking performance of the surface of the brake disc (6) can be ensured, the function of removing the fragment dust is achieved, the contact area of the brake disc (6) and air is increased by the dust removal groove (7) due to structural characteristics, the heat dissipation of the brake disc (6) and the brake pad (2) in the automobile braking process is accelerated, the heat fading coefficient of the surface of the brake disc (6) and the brake disc (2) is reduced, and the heat fading coefficient, the better the braking performance, the shorter the braking distance of the automobile is, thereby ensuring the optimal braking performance of the brake disc (6).
Claims (4)
1. An intelligent monitoring type electronic hydraulic brake system comprises a distance sensor 1(1), a brake pad (2), a metal sheet (3), a heat insulation layer (4), a vent hole (5), a brake disc (6), a dust removal groove (7), a hub bolt hole (8), a wheel axle hole (9), a wheel flange (10), a brake caliper (11), a brake caliper mounting bracket (12), a power supply (13), a rotating motor (14), a distance sensor 2(15), a liquid pressure sensor (16), a displacement sensor (17) and an electronic control unit ECU (18); the method is characterized in that: the displacement sensor (17) is placed at the stroke of the brake pedal, the liquid pressure sensor (16) is arranged in a hydraulic pipeline and is connected with an Electronic Control Unit (ECU) (18) through a circuit, holes are formed in the inner side of the brake caliper (11), a large number of heat insulation layers (4) are placed in the holes, the distance sensor (1) is placed in the holes and is connected with the Electronic Control Unit (ECU) (18) through the circuit, and six bent dust removal grooves (7) with trapezoidal sections are respectively formed in the two surfaces of the brake disc (6) and are connected with the outermost side of the brake disc (6).
2. An electro-hydraulic brake system of the smart monitor type as set forth in claim 1, wherein: the car is at the braking in-process, brake block (2) and brake disc (6) carry out the contact friction and can produce the surface of piece dust at brake disc (6), when continuously braking, brake block (2) can promote piece dust to six dust removal recess (7), the dust removal recess is trapezoidal cross-section's bending groove, the dust utilizes self inertia and wind-force to discharge from dust removal recess (7) pipeline, and then play the effect of cleaing away the piece dust, dust removal recess (7) have also increased the area of contact of brake disc (6) with the air, thereby accelerate the heat dissipation of brake disc (6).
3. An electro-hydraulic brake system of the smart monitor type as set forth in claim 1, wherein: the distance sensor 2(15) in the inner hole of the brake caliper (11) detects the distance from the position to the brake disc (6) in real time, the distance sensor 2(15) converts a distance signal into an electric signal and uploads the electric signal to the electronic control unit ECU (18), the electronic control unit ECU (18) performs comparative analysis, when a distance measurement value is smaller than or equal to a set threshold value, the brake disc (2) is worn to be replaceable, and the electronic control unit ECU (18) gives an alarm to remind a driver of replacing the brake disc.
4. An electro-hydraulic brake system of the smart monitor type as set forth in claim 1, wherein: the displacement sensor (17) monitors an electric signal and uploads the electric signal to the electronic control unit ECU (18), when the liquid pressure sensor (16) does not detect the electric signal or the detected electric signal is asynchronous and has large signal intensity difference, the electronic control unit ECU (18) can carry out analysis and judgment and immediately provide all braking force required by automobile braking through the electronic braking system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890981.2U CN212447483U (en) | 2020-05-25 | 2020-05-25 | Electronic hydraulic brake system with intelligent monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890981.2U CN212447483U (en) | 2020-05-25 | 2020-05-25 | Electronic hydraulic brake system with intelligent monitoring |
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| Publication Number | Publication Date |
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| CN212447483U true CN212447483U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020890981.2U Expired - Fee Related CN212447483U (en) | 2020-05-25 | 2020-05-25 | Electronic hydraulic brake system with intelligent monitoring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562528A (en) * | 2021-11-26 | 2022-05-31 | 华能新能源上海发电有限公司 | 2WM fan driftage calliper brake block monitoring devices |
| CN118328095A (en) * | 2024-06-12 | 2024-07-12 | 江苏三志制动器有限公司 | New energy automobile arresting gear |
-
2020
- 2020-05-25 CN CN202020890981.2U patent/CN212447483U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562528A (en) * | 2021-11-26 | 2022-05-31 | 华能新能源上海发电有限公司 | 2WM fan driftage calliper brake block monitoring devices |
| CN118328095A (en) * | 2024-06-12 | 2024-07-12 | 江苏三志制动器有限公司 | New energy automobile arresting gear |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |