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A friction block capable of intelligently detecting wear and real-time temperature and its detection method

A technology of real-time temperature and friction block, applied in the direction of measuring device, vehicle test, machine/structural component test, etc., can solve the problems of cumbersome detection process, ineffective detection of friction block, low accuracy, etc., to reduce detection The process and the number of times, the effect of avoiding the weakening of the braking effect and avoiding potential safety hazards

Active Publication Date: 2019-12-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Car braking relies on the friction of the brake friction disc and the friction block, which will inevitably cause wear and tear on the brake friction block. When the car brakes, a large amount of heat will be generated under the friction of the brake friction disc and the friction block, resulting in the brake The system temperature is too high, resulting in heat exhaustion, which weakens the braking effect
The detection of traditional brake friction pads, firstly, by dismantling the car, that is, unloading the tires, taking out the brake friction pads to observe its thickness, the detection process is cumbersome, and the accuracy is not high; The sound of brake friction disc friction
This detection method has a large error, and it needs experienced people to hear the difference; third, when the brake friction block is close to the limit, the vehicle will have a warning sound, this detection method has a large error, and at this time The brake friction block is close to the limit, and there will be a great safety hazard; Fourth, the patent: ZL 200720170133.9 mentions that a precision resistor is embedded inside the friction block, but the problem is that there is only one resistor, and the detection effect on the entire friction block It is not obvious. A resistor can only detect the surrounding conditions, and there will be situations where uneven friction cannot be detected. If the friction block is not installed, it will also have a great impact on the braking performance. At the same time, the uneven friction will also cause the use of the friction block. significantly less lifespan
The traditional brake system still has the phenomenon of heat exhaustion due to excessive temperature, which leads to poor braking effect. The temperature of the brake friction disc of the traditional brake system cannot be detected, which will cause the brake system to be overheated and the braking distance will be longer. phenomenon of traffic accident

Method used

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  • A friction block capable of intelligently detecting wear and real-time temperature and its detection method
  • A friction block capable of intelligently detecting wear and real-time temperature and its detection method
  • A friction block capable of intelligently detecting wear and real-time temperature and its detection method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: as Figure 1-5 As shown, a friction block that can intelligently detect wear and real-time temperature includes a brake friction disc 1, a caliper 2, a friction block 3, a display 6, a battery 7, a digital temperature sensor 8, a control module 9, and a friction block thickness detection module 10. LED buzzer 11, the battery 7 is connected with the friction block thickness detection module 10 and the digital temperature sensor 8 respectively, and then connected with the control module 9, and the control module 9 is connected with the display 6 and the LED buzzer 11 respectively;

[0035] The friction block thickness detection module 10 includes a plurality of precision resistors 4, each precision resistor 4 is connected in series with a fixed-value resistor respectively and then connected to the control module 9, and the precision resistors 4 are connected in parallel and then connected to the battery 7;

[0036] The friction blocks 3 are respectively fixe...

Embodiment 2

[0045] Embodiment 2: Because the voltage change is an analog quantity, and what the single-chip microcomputer needs is a discrete digital quantity, so it is necessary to convert the voltage change on the precision resistor 4 through an analog-to-digital conversion circuit to convert the analog quantity into a digital quantity. Therefore, the precision resistors 4 are respectively connected to IN0-IN7 of the A / D conversion circuit to perform analog and digital conversion. The A / D conversion circuit converts the output to the single-chip microcomputer through the bus, and then sends it to the single-chip microcomputer to analyze and calculate the relationship between the voltage on the resistor and the thickness of the friction plate. Since there is no clock in the A / D conversion circuit, the address latch enable signal (pin ALE) provided by the microcontroller is obtained after the D flip-flop (U6:A) is divided by 2, and provided to the A / D conversion circuit clock signal, D tr...

Embodiment 3

[0050] Embodiment 3: Because the length of each precision resistor 4 can only represent the thickness near the modified point, and cannot represent the thickness of the entire friction block 3, because the improper installation of the friction block 3 will cause different wear conditions in different places, each There are four precision resistors 3 on the block friction block 3, and the four precision resistors 3 form a rectangular surface, and the specific distribution is as follows: image 3 As shown, this will make the final output result most representative of the thickness of the entire friction block 3, and the wear conditions at different places can be seen according to the absolute value of the difference between different precision resistors 4. Eight 1K fixed-value resistors are respectively connected in series with eight 1K precision resistors to divide the voltage of 5V. When they are not worn out, they each occupy 2.5V, and then connect one end of the eight precisi...

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Abstract

The invention relates to a friction block capable of intelligently detecting abrasion and a real-time temperature and a detection method thereof and belongs to the automobile brake system automation detection field. In the invention, a brake friction disc, calipers, the friction block, a display, a cell, a digital temperature sensor, a control module, a friction block thickness detection module and an alarm module are included. The cell is connected to the friction block thickness detection module and the digital temperature sensor, and then is connected to the control module. The control module is connected to the display and an LED buzzer. The friction block thickness detection module comprises a plurality of precision resistors. Each precision resistor is connected in series with one fixed value resistor and then is connected into the control module. The precision resistors are connected in parallel and then are connected to the cell. In the invention, a service life of the friction block is prolonged, and operation and times of brake system detection are reduced; an abrasion condition can be accurately detected, and whether the friction block and the brake friction disc are contacted correctly can be determined; and a brake system temperature can be detected in real time and a condition that a brake effect is weakened because of heat exhaustion is avoided.

Description

technical field [0001] The invention relates to a friction block capable of intelligently detecting wear and real-time temperature and a detection method thereof, belonging to the field of automatic detection of automobile brake systems. Background technique [0002] Automobile brakes rely on the interaction of the brake friction disc and the friction block to obtain the deceleration effect of the automobile, which is an indispensable part of the safe operation of the automobile. Car braking relies on the friction of the brake friction disc and the friction block, which will inevitably cause wear and tear on the brake friction block. When the car brakes, a large amount of heat will be generated under the friction of the brake friction disc and the friction block, resulting in the brake The system temperature is too high, causing heat exhaustion, which weakens the braking effect. The detection of traditional brake friction pads, firstly, by dismantling the car, that is, unlo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02G01M17/007
CPCG01D21/02G01M17/007
Inventor 李柯杭俸志富盛贵章郭涵冉青陈蜀乔
Owner KUNMING UNIV OF SCI & TECH
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