System and method for detecting temperature of vehicle brake pad

Abstract

The present invention relates to a system and a method for detecting the temperature of a vehicle brake pad. The system comprises: a brake pad fixed to the back plate of a disk brake; a recessed groove having a predetermined size and formed at one end of the brake pad; a temperature sensor fixed to the back plate and having a sensing unit positioned in the recessed groove; and a control unit for monitoring a brake pad temperature that is input from the temperature sensor in real time or non-real time, the control unit outputting a brake pad overheating warning signal to a display unit and a warning unit when the brake pad temperature, input from the temperature sensor, exceeds a reference temperature. Furthermore, the method for detecting the temperature of a brake pad comprises the steps in which: a) a temperature sensor installed in the brake pad measures a brake pad temperature in real time or non-real time; b) the brake pad temperature measured in real time or non-real time is input to the control unit and monitored; c) the temperature of the brake pad is increased by braking; d) the control unit compares the brake pad temperature, input from the temperature sensor, with a reference temperature set in the control unit; e) the brake pad temperature, input from the temperature sensor, exceeds the reference temperature; f) the brake pad is determined to be overheated and a warning about the brake pad overheating is issued through the display unit and the warning unit; and transmitting a brake overheating warning signal to a driver's mobile device via a wireless communication module.

Description

Vehicle brake pad temperature detection system and method thereof

[0001] The present invention relates to a brake pad temperature detection system for a vehicle and a method thereof, wherein a friction braking surface and a ventilated groove are formed on one end of a brake pad of a disc brake, and then a temperature sensor is installed to measure the brake pad temperature and issue a warning when overheating occurs, thereby preventing overheating of the brake pad, fire, and shortening of its lifespan, as well as safety accidents of the vehicle.

[0002] In general, in the case of heavy vehicles such as medium and large buses and trucks, the braking distance becomes longer due to the fade phenomenon that occurs when the braking friction heat accumulates and hardens in the drum and shoe or disc and pad as the braking time increases along with the frequent braking when driving downhill, on mountain roads, on snowy roads, etc., and the brake system overheats, causing fires, etc. Accordingly, a temperature sensor is installed in the brake system to warn the driver when overheating exceeds the standard temperature, thereby preventing various accidents caused by brake overheating in advance.

[0003] However, in the case of temperature sensors installed in existing brake systems, they are not structured to directly measure the temperature of the friction braking surface or friction braking part where high-temperature braking friction heat is generated, and most of them are configured to measure (detect) the temperature of the brake pad, the temperature of the brake shoe, or the temperature of the rivet, so although the surface temperature transmitted (conducted) to these brake parts or the temperature of the part where the temperature sensor is installed is accurately measured, the temperature of the friction braking part, which is the internal atmosphere temperature of the brake system, is not accurately measured, so there was a problem that it was difficult to predict the overall situation of the brake system.

[0004] In addition, there were several problems, such as the vehicle's brake overheating signal not being transmitted to the driver's mobile terminal or the vehicle management server located away from the vehicle due to the lack of a communication network between the vehicle and the driver's mobile terminal or the vehicle and the vehicle management server, making it impossible to respond quickly (primary response) or manage the situation.

[0005] (Patent Document 1) Republic of Korea Patent Publication No. 10-1827103 (Title of Invention: Brake Disc Temperature Estimation System and Method, Patent Announcement dated February 7, 2018)

[0006] (Patent Document 2) Republic of Korea Patent Publication No. 10-2007-0112497 (Title of invention: Temperature prediction method for brake disc for automobile, patent published on November 27, 2007)

[0007] (Patent Document 3) Republic of Korea Patent Publication No. 10-2017-0077613 (Title of Invention: Method for Estimating Temperature of a Brake Disc of a Vehicle, Patent Publication Date: July 6, 2017)

[0008] The problem to be solved by the present invention is to provide a vehicle brake pad temperature detection system and method that can prevent overheating of the brake pad, fire, shortening of the lifespan, and safety accidents of the vehicle in advance by forming a friction braking surface and a ventilated groove on one end of the brake pad of a disc brake and then installing a temperature sensor to measure the brake pad temperature and provide a warning when overheating occurs.

[0009] Another problem to be solved by the present invention is to provide a vehicle brake pad temperature detection system that establishes a communication network between a vehicle and a driver's mobile terminal, a vehicle and a specific terminal, or a vehicle management server, and transmits a brake pad temperature and brake pad overheating warning signal to a driver's mobile terminal or a specific terminal located away from the vehicle brake, or to a vehicle management server, and issues a warning and manages the brake pad temperature.

[0010] The brake pad temperature detection system for a vehicle of the present invention comprises: a brake pad fixed to a back plate of a disc brake; a groove of a predetermined size formed on one end of the brake pad; a temperature sensor fixed to the back plate and having a sensing portion positioned in the groove; and a control unit that monitors a brake pad temperature input in real time or non-real time from the temperature sensor and issues a warning when the input temperature exceeds a normal temperature.

[0011] It further includes a wireless communication module connected to the above control unit and transmitting real-time or non-real-time brake pad temperature and brake pad overheating warning signal to a mobile terminal.

[0012] It further includes a wireless communication module that is connected to the above control unit and transmits real-time or non-real-time brake pad temperature and brake pad overheating warning signal to a specific terminal or vehicle management server connected to a wireless communication network.

[0013] The method for detecting brake pad temperature for a vehicle according to the present invention comprises: a) a step of measuring brake pad temperature in real time or non-real time by a temperature sensor installed in a brake pad; b) a step of inputting the brake pad temperature measured in real time or non-real time to a control unit and monitoring it; c) a step of increasing the temperature of the brake pad by brake braking; d) a step of comparing the brake pad temperature input from the temperature sensor with a reference temperature set in the control unit; e) a step of determining that the brake pad temperature input from the temperature sensor exceeds the reference temperature; and f) a step of determining that the brake pad is overheated and warning of the brake pad overheating through a display unit and a warning unit.

[0014] After step f) of warning of brake pad overheating through a display unit and a warning unit by judging that the brake pad overheating has occurred, a step of transmitting a brake overheating warning signal to the driver's mobile terminal through a wireless communication module of the control unit is further included.

[0015] After step f) of warning of brake pad overheating through a display unit and a warning unit by judging that the brake pad overheating has occurred, a step of transmitting a brake pad overheating warning signal to a specific terminal (such as an administrator) stored in the control unit or a vehicle management server through a wireless communication module of the control unit and a wireless communication network is further included.

[0016] The present invention uses a non-contact temperature sensor (5) installed on the brake pad (3) of a large vehicle in particular to measure the temperature of the friction surface, which is the internal ambient temperature of the brake system, in real time or non-real time and to display and give an alarm, so that when the brake overheats, a visual and auditory warning is immediately given, allowing for prompt response measures, thereby preventing overheating of the brake pad, fire, and shortening of its lifespan, as well as vehicle accidents.

[0017] The present invention has a temperature sensor (5) installed in a groove (4) formed in a pad (4) of a vehicle brake and ventilated with a friction braking surface, so that the braking friction heat (friction braking heat) generated during braking can be measured in real time or non-real time in a non-contact manner, thereby having the effect of quickly and accurately determining the internal atmosphere temperature of the brake system and / or the brake pad (3) temperature.

[0018] The temperature sensor (5) of the present invention is installed at a height below the wear limit of the brake pad (3) when installed in the groove (4), so that even if the brake pad (3) is worn or replaced, the temperature sensor (5) is not damaged and can be used continuously.

[0019] The temperature sensor (5) of the present invention non-contactly measures the temperature of the brake pad and the internal atmosphere temperature of the brake in real time or non-real time, and the output temperature characteristic signal is linear, so that a temperature signal suitable for various judgments and controls can be obtained.

[0020] The control unit (7) of the present invention monitors the brake pad temperature measured by the temperature sensor (5) in conjunction with the display unit (11) and the warning unit (12) and displays and warns the driver with a warning light and a warning sound by dividing it into stages, thereby enabling the driver to respond quickly by stage (situation).

[0021] In the present invention, the brake pad temperature signal transmitted to a mobile terminal (14) or a specific terminal (16) or a management server (17) is implemented as an application installed in the mobile terminal (14) or a specific terminal (16) or an application program of the management server (17), and the measurement signal of the temperature sensor (3) installed in each wheel of the vehicle is input and displayed, and the brake pad temperature of the disc brake installed in each wheel and the step-by-step temperature and warning temperature of the brake pad are displayed, so that the brake temperature can be clearly identified at a glance and a quick response can be made, and this is a very useful invention that has the effect of enabling the brake temperature to be identified at a glance and a quick response to be made.

[0022] Figure 1: System configuration diagram illustrating an example of the present invention.

[0023] Figure 2: System configuration diagram illustrating an example of the present invention.

[0024] Figure 3: Block diagram of a controller circuit illustrating an example of the present invention.

[0025] Figure 4: Block diagram of a controller circuit illustrating another example of the present invention.

[0026] Figure 5: An example of a temperature warning map illustrating an example of the present invention.

[0027] Figure 6: Comparison graph of temperature characteristics of a surface temperature sensor and a temperature sensor of the present invention.

[0028] Figure 7: System flow diagram illustrating an example of the present invention.

[0029] Figure 8: System flow diagram illustrating another example of the present invention.

[0030] <Explanation of symbols>

[0031] (1)--Caliper (2)(2a)--Backplate

[0032] (3)(3a)--Brake pad (4)--Recessed groove

[0033] (5)--Temperature sensor (5a)--Sensing part of the temperature sensor

[0034] (6)--Fixing member (bracket) (7)--Control unit

[0035] (8)--Signal line (cable line) (9)--Connector

[0036] (10)--Settings section (11)--Display section

[0037] (12)--Warning unit (13)--Wireless communication module

[0038] (14)--Mobile terminal (15)--Wireless communication network

[0039] (16)--Specific terminal (mobile) (17)--Management server

[0040] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. In describing the embodiments of the present invention, identical components in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known structures or functions are omitted so as not to obscure the gist of the present invention. In addition, matters expressed in the attached drawings are schematic drawings for easy explanation of the embodiments of the present invention, and may differ from the form actually implemented.

[0041] FIG. 1 and FIG. 2 are diagrams showing the configuration of a vehicle brake pad temperature detection system disclosed in the present invention, in which a pair of back plates (2) (2a) are installed spaced apart from each other inside a caliper (1) constituting a disc brake, brake pads (3) (3a) are fixed to the surface of the back plates (2) (2a) so as to face each other, and a brake disc is installed between the brake pads (3) and the brake pads (3a).

[0042] A groove (4) is formed at one end of the above-mentioned one-sided brake pad (3), a temperature sensor (5) is fixed to one end of the one-sided back plate (2) using a bracket or a fixing member (6), and the sensing unit (5a) of the temperature sensor (5) is positioned in the groove (4) and measures the brake pad temperature in real time or non-real time non-contact and then inputs the measured brake pad temperature to the control unit (7) so that the brake pad temperature is constantly monitored.

[0043] The tip of the sensing portion (5a) of the temperature sensor (5) located in the above-mentioned recess (4) is installed so as not to come into contact with the approaching brake disc (not shown) during braking. Considering that the brake pad (5) (5a) is worn by braking friction, the sensing portion (5a) of the temperature sensor (5) may be configured to be positioned 2 to 20 mm back from the friction surface (surface) of one brake pad (3).

[0044] The above-mentioned groove (4) may be formed in an upwardly open shape or a through-hole structure on the upper side of the brake pad (3), for example, on the upper side of the brake pad (3), so as not to interfere with brake braking.

[0045] The above groove (4) is open toward the brake disc, so that the friction atmosphere temperature due to friction during braking is measured in real time or non-real time and input to the control unit (7).

[0046] The above-mentioned groove (4) is formed on the upper part of the brake pad (3), so that the lead wire of the temperature sensor (5) or the cable or signal wire (8) connected to the lead wire can be fixed to the caliper (1) body located on the upper and side of the brake pad (3) (3a), or can be easily connected (electrically connected) to the input side of the control unit (7) through the connector (9) by routing it along the caliper (1) body.

[0047] The above connector (9) is connected to the end of the signal line (8) and is configured to be easily connected or disconnected by simply connecting it to another connector connected to the input line of the control unit (7).

[0048] It is preferable that the bracket or fixing member (6) that fixes the temperature sensor (5) to the back plate (4) be firmly fixed to the back plate (4) by a method such as forcible joining, fastening or welding so that the temperature sensor (3) does not move from its position even when the vehicle is driven or braked.

[0049] The above temperature sensor (5) may be an element or semiconductor element (an element with excellent temperature characteristics or temperature characteristic curve) having a characteristic in which resistance is proportional to temperature change, such as a thermistor sensor or RTD (Resistance Temperature Detector) sensor with excellent response speed and temperature characteristics, and quickly and accurately measures the internal atmosphere (air) temperature of the brake transmitted to the groove (4) located inside the brake.

[0050] The above thermistor-type temperature sensor is a semiconductor device whose electrical resistance value decreases sensitively as temperature increases. It is manufactured by sintering metal oxides such as manganese, nickel, cobalt, iron, copper, and titanium. Structurally, there are direct heating types that heat through direct current and radiation types that heat by installing a heater around them. It is used to measure or detect temperature. The measurement range is approximately -50 to 300℃, and the sensitivity is sensitive.

[0051] The above RTD (Resistance Temperature Detector) type temperature sensor is a temperature sensor that includes a resistor whose resistance value changes as the temperature changes, and is known to have excellent accuracy, repeatability, and stability.

[0052] Fig. 3 is an example of a circuit block of a brake temperature detection system of the present invention. A temperature sensor (5) that measures and inputs the frictional heat of the brake generated during braking in real time or non-real time, and a setting unit (10) that sets a reference temperature and sets monitoring conditions or states are connected to the input side of the control unit (7).

[0053] The output side of the above control unit (7) includes a display unit (11) installed on the instrument panel or dashboard of the driver's seat, which displays real-time or non-real-time measured temperature of each brake and a warning signal due to abnormal overheating of the brake using an indicator, seven-segment, LED, LCD, or a warning light, a warning unit (12) that gives a warning sound using a buzzer, siren, or the like when the brake is abnormally overheated, and a wireless communication module (13) that wirelessly transmits the real-time or non-real-time measured temperature of the brake and the warning signal due to abnormal overheating of the brake to a portable terminal (14) carried by the driver.

[0054] The above control unit (7) compares the brake pad temperature signal input from the temperature sensor (5) as shown in Fig. 6 with a preset reference temperature signal, and determines the normal temperature and the warning temperature exceeding the normal temperature range, and outputs a warning signal and a warning signal for each temperature level.

[0055] The above wireless communication module (13) may be RF Wifi, Bluetooth, USB, Beacon, RF WIFI (Radio Frequency Wireless Fidelity) with a communication distance of several kilometers, wireless data logger, etc.

[0056] The above beacon is a next-generation smartphone short-range communication technology using low-power Bluetooth that searches for a mobile terminal (14) within a radius of 50 to 70 m and transmits a brake temperature signal and a warning signal.

[0057] The above wireless communication module (13) is applied to the brakes of the rear trailer so that when a trailer is connected to the rear of a tractor with a driver on board and is towed, a considerable distance is maintained between the tractor and the trailer, and thus the real-time or non-real-time measured temperature of the brakes installed on each wheel and the brake overheating warning signal and the step-by-step warning signal are transmitted in real-time or non-real-time to a mobile terminal (14), an administrator terminal, a specific terminal (16), or a management server (17) via the wireless communication module (13), so that they can be recognized and responded to immediately or managed and stored in a database.

[0058] FIG. 4 is a circuit block diagram of another embodiment of the brake pad temperature detection system of the present invention, which can be configured to be transmitted to a vehicle management server (16) via a commercial wireless communication network (15), and a brake pad temperature signal and a brake pad overheating warning signal, which are measured in real time or non-real time for each brake, are transmitted to a management server (17) that manages the vehicle via a wireless communication module (13) of a control unit (7) and a commercial or non-commercial wireless communication network (15), thereby enabling the database of the brake pad status of vehicles belonging to cargo companies, bus companies, passenger transportation companies, taxi companies, etc., and there is an effect that can be actively utilized for post-break pad management and maintenance, and vehicles belonging to the above companies are assigned and given an ID, which is a vehicle-specific identification code or code.

[0059] The brake pad temperature signal and / or brake pad overheating warning signal transmitted in real time or non-real time to the mobile terminal (14) or a specific terminal (16) or a management server (17) is implemented as an application (Aapplication) installed on the mobile terminal (14) or a specific terminal (16) or an application program (Application Program) of the management server (17), and the measurement signal of the temperature sensor (3) installed on the brake pad of the disc brake installed on each wheel of the vehicle is input and displayed, and the temperature of the brake pad, the temperature of the brake pad at each stage, and the warning temperature of the brake pad are displayed, so that the temperature of the brake pad can be clearly identified at a glance and a response can be taken.

[0060] The present invention forms a groove (2) in the brake pad (1) portion of a disc brake, and then installs a temperature sensor (5) in a non-contact manner so that the brake disc does not come into contact with it, thereby measuring the internal ambient temperature of the brake, for example, the braking friction heat generated at the friction surface of the brake disc and the brake pad (1) during braking, in real time or non-real time, and displaying it through a display unit (11) installed on an instrument panel or dashboard, and when it is determined that the brake pad is abnormally overheated, an overheating alarm is issued through the display unit (11) and the alarm unit (12), and the signal is transmitted in real time or non-real time to a driver's mobile terminal (13) through a wireless communication module (13), or to a specific terminal (16) or a vehicle management server (9) through a wireless communication module (13) and a wireless communication network (15), thereby enabling a quick response measure to be taken.

[0061] The above temperature sensor (5) is formed on a brake pad (3) of a brake system, for example, a disc brake, installed on a wheel portion of a vehicle, and configured to be open toward a brake disc, thereby having a groove (4) of a predetermined size that is connected to a friction surface and allows ventilation, and is inserted into the groove (4) and exposed toward the brake disc to measure the internal atmosphere temperature of the disc brake, for example, the temperature of the friction surface (or braking surface) of the brake pad (3) and the brake disc in a non-contact manner in real time or non-real time, and input the measured temperature to a control unit (7).

[0062] The above-mentioned groove (2) is preferably of a size that can effectively transmit frictional heat while not reducing the braking surface or braking power of the brake pad (3), and since the braking friction heat (friction braking heat) of the brake pad (3) and the brake disc, which are in close contact with each other and perform friction braking due to vehicle braking, is transmitted to the groove (4), the internal atmosphere temperature of the disc brake is measured in real time or non-real time. That is, the groove (4) is connected to and ventilated with the friction surface between the brake pad (3) and the brake disc, which directly rub against each other during braking and generates braking friction heat, and the temperature sensor (5) measures the friction temperature of the brake pad transmitted to the groove (4) in real time or non-real time, so the internal atmosphere temperature of the disc brake is measured in real time or non-real time.

[0063] The internal size or inner diameter of the above-mentioned groove (4) is configured to be slightly larger than the outer diameter of the sensing part (5a) of the temperature sensor (5), preferably 1.2 to 3 times larger, so that the temperature sensor (5) can accurately measure the braking friction heat generated during braking in a non-contact manner in real time or in real time.

[0064] If the internal size or inner diameter of the above-mentioned groove (4) is less than 1.2 times, there is a problem that the internal atmosphere temperature of the brake or the temperature of the friction surface, which changes according to the braking force, is not immediately or quickly reflected in the groove (4), and if the internal size or inner diameter of the above-mentioned groove (4) exceeds 3 times, there is a problem that the braking efficiency decreases as the friction area of ​​the brake pad (3) is reduced.

[0065] Fig. 5 is a graph comparing the temperature characteristics of the temperature sensor (5) of the present invention and the surface temperature sensor. It can be seen that the surface temperature sensor is nonlinear with a severe curvature in the measured temperature signal, whereas the temperature sensor (5) of the present invention has a linear characteristic for the measured temperature signal, so the reliability of temperature measurement is high.

[0066] The above temperature sensor (5) is fixed to the back plate (2), and the sensing part (5a) of the temperature sensor (5) is positioned in the groove (4), but is installed at a position below the wear limit of the brake pad (3), so that damage or wear of the temperature sensor (5) is prevented even if the brake pad (3) is worn. Accordingly, since it can be replaced with a new brake pad (3) having a groove (4) formed, there is an advantage in that the temperature sensor (5) can be continuously used.

[0067] The above warning unit (12) can issue a warning in various ways, such as not only auditory but also tactile methods that stimulate the driver's skin.

[0068] The above control unit (7) monitors the brake pad temperature input from the temperature sensor (3) in real time or non-real time, and uses control logic to configure the brake pad temperature signal input from the temperature sensor (5) into a temperature map as shown in Fig. 7, and displays and issues an alarm so that the driver can immediately recognize it through the display unit (11) and / or warning unit (12).

[0069] For example, if the temperature of the brake pad measured in real time or non-real time by the temperature sensor (5) is 100℃ or higher, it is judged as a stage 1 'overheating warning', and a yellow indicator light is lit and a slow warning sound and an 'overheating' sound (voice) are output, and if the temperature of the brake pad measured in real time or non-real time by the temperature sensor (5) is 200℃ or higher, it is judged as a stage 2 'risk of smoke generation', and a red indicator light is lit and a normal warning sound and a 'smoke generation' sound (voice) are output, and if the temperature of the brake pad measured in real time or non-real time by the temperature sensor (5) is 300℃ or higher, it is judged as a stage 2 'risk of fire generation', and a red indicator light is blinked and a fast warning sound or a 'fire generation' sound (voice) is output, so that the driver can recognize and respond to the real-time or non-real-time temperature and stage temperature and warning temperature of the brake pad, thereby preventing overheating, fire, and life of the brake. It can prevent premature wear and deformation of brake parts, body vibration, noise, etc., as well as shortening.

[0070] The present invention provides a recess (4) which is a space for ventilation with a braking friction surface or friction space in a brake pad (3) portion and then installs a temperature sensor (5) to measure the braking friction heat generated during braking in a non-contact manner, thereby quickly and accurately determining the internal ambient temperature of the brake system and indicating and warning of abnormalities at each stage, thereby having the advantage of preventing overheating, fire, and shortening of the lifespan of the brake pad as well as vehicle accidents in advance.

[0071] The present invention measures the internal atmosphere temperature of the brake in a non-contact manner using a temperature sensor (5) using a thermistor or RTD sensor, and monitors the temperature sensor (5) measurement temperature and the reference temperature input to the control unit (7), and displays and warns the driver by temperature level using the display unit (11) and the warning unit (12), thereby enabling a quick response (countermeasure).

[0072] The present invention provides a temperature detection system having a fast response speed, excellent temperature characteristics, and high reliability by measuring the internal ambient temperature of a braking device using a thermistor or PTC sensor, etc.

[0073] In the present invention, the brake pad temperature may be displayed on a screen of a mobile terminal (13) or a specific terminal (16), or may include a dedicated mobile app or a separate warning device.

[0074] FIG. 7 is a system flow chart illustrating an example of the present invention, in which a temperature sensor (5) measures the temperature of a brake pad in real time or non-real time (step a), the brake pad temperature measured in real time or non-real time is input to a control unit (7) and monitored (step b), and when the brake pad temperature rises due to brake braking (step c), the control unit (7) monitoring the brake pad temperature compares the brake pad temperature input from the temperature sensor (5) with a reference temperature (reference temperature range) preset in the control unit (7) (step d), and when the brake pad temperature input from the temperature sensor (5) exceeds the reference temperature (step e), the control unit (7) determines that the brake pad is overheated and issues a warning of the brake pad overheating through the display unit (9) and the warning unit (10) (step f), and the vehicle driver recognizes the brake pad overheating through the warning through the display unit (9) and the warning unit (10) and takes appropriate measures to prevent the brake overheating or fire, thereby protecting valuable human life and property.

[0075] FIG. 8 is a system flow chart illustrating another example of the present invention, in which a temperature sensor (5) measures the temperature of a brake pad in real time or non-real time (step a), and the brake pad temperature measured in real time or non-real time is input to a control unit (7) and monitored (step b), and when the temperature of the brake pad rises due to braking (step c), the control unit (7) monitoring the brake temperature compares the brake pad temperature input from the temperature sensor (5) with a reference temperature preset in the control unit (7) (step d), and when the brake pad temperature input from the temperature sensor (5) exceeds the reference temperature (step e), the control unit (7) determines that the brake pad is overheated and issues a warning through the display unit (9) and the warning unit (10) (step f), so that the vehicle driver can recognize the brake pad overheating and take appropriate measures to prevent brake pad overheating or fire, thereby protecting valuable human lives and property, and in addition, the control unit (7) can communicate with the vehicle driver's portable terminal (mobile, smart phone, etc.) through a wireless communication module. A brake pad overheating warning signal is transmitted to a mobile terminal (14) or is pushed to a specific terminal (16) of a designated person (specific person) stored in the control unit (7) via the wireless communication module (13) of the control unit (7) and the wireless communication network (15) (step g), so that the brake pad overheating situation can be recognized and appropriately dealt with.

[0076] In addition, the brake pad overheating warning signal is configured to be transmitted to the management server (17) that manages the vehicle via the wireless communication module (13) of the control unit (7) and a commercial or non-commercial wireless communication network (15) (step g), thereby enabling the management and database of the brake status of vehicles belonging to cargo companies, bus companies, passenger transport companies, taxi companies, etc., and there is an effect that it can be actively utilized for post-break pad management and maintenance. Vehicles belonging to the above companies are assigned and given an ID, which is a vehicle-specific identification code or code.

[0077] The present invention monitors the brake temperature by installing a temperature sensor on the brake pad of a vehicle to prevent the brake system from overheating and the occurrence of fire due to frequent braking when a heavy commercial vehicle such as a medium or large bus or truck is driven on a downhill road, mountain road, etc., and not only issues a warning on the dashboard in the driver's seat, but also transmits a warning in real time or non-real time to the driver's mobile terminal, a specific terminal, or a vehicle management server via a communication network, and allows for prompt response measures to be taken, thereby preventing fire and protecting valuable lives and property. In addition, since the management server can store the information in a database, it has the effect of being actively utilized for post-break pad and brake management and maintenance.

[0078] In the present invention, the temperature sensor (5) may be installed in the space between the brake pad (3) (3a) and the caliper (1) instead of omitting the configuration of the recess (4) so ​​as to prevent the frictional force of the brake pad (3) (3a) from decreasing, so as to measure the brake pad temperature and the braking atmosphere temperature.

[0079] The present invention described above is not limited to the present embodiment and the attached drawings, and various substitutions, modifications, and changes are possible within the scope that does not depart from the technical spirit of the present invention, which will be apparent to those skilled in the art to which the present invention pertains.

Claims

1. Brake pads fixed to the back plate of the disc brake; A groove of a predetermined size formed on one end of a brake pad; A temperature sensor fixed to the back plate and having a sensing portion positioned in the recessed groove; and Monitor the brake temperature input from the temperature sensor. A control unit that outputs a brake overheating warning signal to the display unit and warning unit when the temperature input from the temperature sensor exceeds the reference temperature; A brake pad temperature detection system for a vehicle including:

2. In claim 1; A wireless communication module connected to the above control unit and transmitting brake pad temperature and brake pad overheating warning signals to a mobile terminal; A brake pad temperature detection system for a vehicle further comprising:

3. In claim 2; A wireless communication module connected to the above control unit and transmitting brake pad temperature and brake pad overheating warning signals to a specific terminal or vehicle management server connected to a wireless communication network; A brake pad temperature detection system for a vehicle further comprising: 4.a) A step in which a temperature sensor installed in a brake pad measures the brake pad temperature; b) A step in which the measured brake pad temperature is input to the control unit and monitored; c) A step in which the temperature of the brake pad increases due to brake braking; d) a step of comparing the brake pad temperature input from the temperature sensor with the reference temperature set in the control unit; e) The stage where the brake pad temperature input from the temperature sensor exceeds the reference temperature; f) A step for judging brake pad overheating and warning of brake pad overheating through the display unit and warning unit; A method for detecting brake pad temperature for a vehicle, comprising:

5. In claim 4; Step f) of warning of brake pad overheating through a display unit and a warning unit by judging that the brake pad overheating has occurred, followed by a step of transmitting a brake overheating warning signal to the driver's mobile terminal through the wireless communication module of the control unit; A method for detecting brake pad temperature for a vehicle further comprising:

6. In claim 4; Step f) of warning of brake pad overheating through a display unit and a warning unit by judging the brake pad overheating, and then a step of transmitting a brake pad overheating warning signal to a specific terminal stored in the control unit or a vehicle management server through the wireless communication module of the control unit and a wireless communication network; A method for detecting brake pad temperature for a vehicle further comprising:

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