CN108189828A - A kind of new brake block Braking Force Detection System - Google Patents
A kind of new brake block Braking Force Detection System Download PDFInfo
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- CN108189828A CN108189828A CN201810013716.3A CN201810013716A CN108189828A CN 108189828 A CN108189828 A CN 108189828A CN 201810013716 A CN201810013716 A CN 201810013716A CN 108189828 A CN108189828 A CN 108189828A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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Abstract
本发明提供一种新的刹车片制动力检测系统，涉及汽车刹车系统的自动检测与控制技术领域，适合汽车刹车片制动力的快速准确检测，旨在弥补现有技术中刹车片制动力检测技术中的不足。本发明可以实现刹车片制动力的快速准确检测，为车辆制动能量回收系统提供必要的技术支持，以提高整车的能量利用率和车辆的续航能力。
The invention provides a new detection system for braking force of brake pads, which relates to the technical field of automatic detection and control of automobile braking systems, is suitable for fast and accurate detection of braking force of automobile brake pads, and aims to make up for the detection technology of brake pad braking force in the prior art deficiencies in. The invention can realize fast and accurate detection of the braking force of the brake pads, and provide necessary technical support for the vehicle braking energy recovery system, so as to improve the energy utilization rate of the whole vehicle and the battery life of the vehicle.
Description
技术领域technical field
本发明涉及汽车刹车系统的自动检测技术领域，更具体地涉及一种新的刹车片制动力检测系统。The invention relates to the technical field of automatic detection of automobile brake systems, and more particularly relates to a new brake pad braking force detection system.
背景技术Background technique
在人们的日常生活中，汽车正在不断进入家庭，成为不可或缺的代步工具，随之而来的，汽车的安全、能耗和环保等相关指标越来越成为汽车制造商和消费者们关注的主要元素。国内外主要汽车公司及零部件供应商致力于制动能量回收技术的研究，通过能量回收系统在车辆减速制动时实现能量回收补给，将动能转化存储，以提高整车的能量利用率和车辆的续航能力。在车辆制动能回收系统中，刹车片制动力的检测是实现制动能回收的关键因素，为制动能回收的工作模式提供必要的判决条件。In people's daily life, cars are constantly entering the family and becoming an indispensable means of transportation. Subsequently, related indicators such as car safety, energy consumption and environmental protection have become more and more concerned by car manufacturers and consumers. main elements of . Major automobile companies and parts suppliers at home and abroad are committed to the research of braking energy recovery technology, through the energy recovery system to realize energy recovery and replenishment when the vehicle decelerates and brakes, and convert and store kinetic energy to improve the energy utilization rate of the vehicle and the vehicle battery life. In the vehicle braking energy recovery system, the detection of the braking force of the brake pads is the key factor to realize the braking energy recovery, which provides the necessary judgment conditions for the working mode of the braking energy recovery.
在现有的汽车产品上，盘式刹车制动器广泛使用，针对盘式制动器制动力的测量，通常是刹车踏板行程的大小老计算，或者通过测量刹车油路的液压力来计算，由于刹车系统实现制动过程中会有能量损失，因此以上所述的制动力检测方法所检测的制动力与刹车片加载到刹车盘的实际制动力之间存在一定的误差，检测结果不准确。因此，有必要设计一种新的刹车片制动力检测系统，快速准确的实现刹车片制动力的测量，为车辆制动能量回收系统提供必要的技术支持。In existing automobile products, disc brakes are widely used. For the measurement of the braking force of disc brakes, it is usually calculated by the old calculation of the stroke of the brake pedal, or by measuring the hydraulic pressure of the brake oil circuit. Since the brake system realizes There will be energy loss during the braking process, so there is a certain error between the braking force detected by the above-mentioned braking force detection method and the actual braking force loaded on the brake disc by the brake pads, and the detection result is inaccurate. Therefore, it is necessary to design a new brake pad braking force detection system, which can quickly and accurately measure the brake pad braking force and provide the necessary technical support for the vehicle braking energy recovery system.
发明内容Contents of the invention
鉴于现有技术的不足，本发明提供一种新的刹车片制动力检测系统，采用电磁感应原理来实现刹车片制动力的快速准确检测，为车辆制动能量回收系统提供必要的技术支持。In view of the deficiencies in the prior art, the present invention provides a new brake pad braking force detection system, which adopts the principle of electromagnetic induction to realize fast and accurate detection of brake pad braking force, and provides necessary technical support for the vehicle braking energy recovery system.
本发明提供一种新的刹车片制动力检测系统，所述的一种新的刹车片制动力检测系统包含刹车盘、刹车片、刹车片驱动装置、弹簧、制动力电磁检测模块、动作传感器和数据采集系统总成；所述刹车片与所述刹车片驱动装置连接，所述刹车片驱动装置驱动所述刹车片运动，所述动作传感器由车辆刹车踏板触发，所述动作传感器与数据采集系统总成经导线连接，所述制动力电磁检测模块安装于所述刹车片驱动装置的沉孔中且可相对于沉孔作轴向滑动，所述制动力电磁检测模块一端与所述弹簧的一端接触且在弹簧的压力下令所述制动力电磁检测模块的另一端压紧在所述刹车片表面，所述弹簧的另一端与所述沉孔底部压紧，所述制动力电磁检测模块与数据采集系统总成经导线连接以实现所述刹车片厚度数据的采集；汽车左前、右前、左后、右后四个轮子上均装有所述制动力电磁检测模块。The present invention provides a new braking force detection system for brake pads. The new braking force detection system for brake pads includes brake discs, brake pads, brake pad driving devices, springs, braking force electromagnetic detection modules, motion sensors and Data acquisition system assembly; the brake pad is connected to the brake pad driving device, the brake pad driving device drives the brake pad to move, the motion sensor is triggered by the vehicle brake pedal, and the motion sensor is connected to the data collection system The assembly is connected by wires. The braking force electromagnetic detection module is installed in the counterbore of the brake pad drive device and can slide axially relative to the counterbore. One end of the braking force electromagnetic detection module is connected to one end of the spring. The other end of the braking force electromagnetic detection module is pressed against the surface of the brake pad under the pressure of the spring, and the other end of the spring is pressed against the bottom of the counterbore. The braking force electromagnetic detection module and the data The acquisition system assembly is connected by wires to realize the acquisition of the thickness data of the brake pads; the four wheels of the left front, right front, left rear and right rear are all equipped with the braking force electromagnetic detection modules.
所述制动力电磁检测模块包含电感线圈、铁芯和信号引线，根据测量需要，所述制动力电磁检测模块可以是单个、两个或多个均布。The braking force electromagnetic detection module includes an inductance coil, an iron core and signal leads. According to measurement requirements, the braking force electromagnetic detection module can be single, two or more evenly distributed.
本发明的一种新的刹车片制动力检测系统，未有刹车动作时，所述刹车片处于复位状态，所述刹车片与所述刹车片之间的气隙d1和d2较大，则所述制动力电磁检测模块的空气介质磁路长度较大，即所述制动力电磁检测模块的磁阻较大；当车辆驾驶人员踩下刹车踏板时，触动所述动作传感器，所述动作传感器的动作信号经导线传递到所述数据采集系统总成并进入刹车片制动力检测状态，同时所述刹车片驱动装置向所述刹车片提供驱动力，驱动所述刹车片与所述刹车盘贴合，实现刹车；在所述刹车片与所述刹车盘贴合时，所述刹车片与所述刹车盘之间的气隙消失，所述制动力电磁检测模块的磁阻值发生跳变，则所检测的电信号发生跳变，进而判断此时刹车片已处于贴合状态，同时所述检测并存储此时的制动力电磁检测模块的磁阻Rm；所述刹车片与所述刹车盘贴合后，在制动力的驱动下，所述刹车片受到压力而发生形变，即刹车片和刹车盘厚度发生变化，则磁路长度发生变化，所述制动力电磁检测模块的磁阻发生变化，所检测的电信号跟随磁阻发生变化，所述数据采集系统总成检测并存储所述制动力电磁检测模块的磁阻Rm；根据所述数据采集系统总成所检测到的制动力电磁检测模块的磁阻Rm，由事先标定的磁阻Rm与所述刹车片所受到的压力的关系得出所述刹车片的驱动力N，进而根据摩擦系数μ以及相关计算公式计算出制动力F，最终实现刹车片制动力F的检测。In the new brake pad braking force detection system of the present invention, when there is no braking action, the brake pad is in the reset state, and the air gaps d1 and d2 between the brake pad and the brake pad are relatively large, so the The air medium magnetic circuit length of the braking force electromagnetic detection module is relatively large, that is, the magnetic resistance of the braking force electromagnetic detection module is relatively large; when the vehicle driver steps on the brake pedal, the motion sensor is touched, and the motion sensor The action signal is transmitted to the data acquisition system assembly through the wire and enters the braking force detection state of the brake pad. At the same time, the brake pad driving device provides driving force to the brake pad to drive the brake pad to fit the brake disc. , to achieve braking; when the brake pad and the brake disc are attached, the air gap between the brake pad and the brake disc disappears, and the reluctance value of the braking force electromagnetic detection module jumps, then The detected electrical signal jumps, and then it is judged that the brake pads are in a bonded state at this time, and at the same time, the detection and storage of the reluctance Rm of the braking force electromagnetic detection module at this time; the brake pads are attached to the brake discs After closing, under the driving of the braking force, the brake pads are deformed under pressure, that is, the thickness of the brake pads and the brake disc changes, the length of the magnetic circuit changes, and the reluctance of the braking force electromagnetic detection module changes. The detected electrical signal changes with the reluctance, and the data acquisition system assembly detects and stores the reluctance Rm of the braking force electromagnetic detection module; according to the detected braking force electromagnetic detection module of the data acquisition system assembly The reluctance Rm of the reluctance Rm, the driving force N of the brake pad is obtained from the relationship between the pre-calibrated reluctance Rm and the pressure on the brake pad, and then the braking force F is calculated according to the friction coefficient μ and related calculation formulas, and finally Realize the detection of the braking force F of the brake pad.
与已有的公知技术相比，本发明具有以下显著效果：本发明的一种新的刹车片制动力检测系统，在刹车片驱动装置上安装制动力电磁检测模块，根据电磁感应原理，当磁路中磁介质的厚度发生变化时，即所述刹车片的厚度发生变化时，磁路的磁通量发生变化，进而制动力电磁检测模块的电感值发生变化，通过检测制动力电磁检测模块的电感值的变化可以实现所述刹车片的制动力检测，且制动力电磁检测模块响应速度快，灵敏度高；本发明的一种新的刹车片制动力检测系统，可以快速精确的检测刹车片制动力，且更换刹车片时，不需要更换制动力电磁检测模块，只需根据刹车片材质更新数据采集系统总成的相关参数，具有良好的通用性；本发明的一种新的刹车片制动力检测系统的微处理器位于制动力电磁检测模块附近，可降低信号采集过程中因导线过长而受到的干扰，用于采集所述制动力电磁检测模块的输出信号，同时通过总线技术输出所检测的制动力数据到其他如汽车能量回收系统等以便于其他系统工作。Compared with the existing known technology, the present invention has the following remarkable effects: a new brake pad braking force detection system of the present invention, a braking force electromagnetic detection module is installed on the brake pad driving device, according to the principle of electromagnetic induction, when the magnetic When the thickness of the magnetic medium in the road changes, that is, when the thickness of the brake pad changes, the magnetic flux of the magnetic circuit changes, and then the inductance value of the braking force electromagnetic detection module changes. By detecting the inductance value of the braking force electromagnetic detection module The change of the braking force of the brake pad can realize the detection of the braking force of the brake pad, and the braking force electromagnetic detection module has a fast response speed and high sensitivity; a new brake pad braking force detection system of the present invention can quickly and accurately detect the braking force of the brake pad, And when replacing the brake pads, there is no need to replace the braking force electromagnetic detection module, and only need to update the relevant parameters of the data acquisition system assembly according to the material of the brake pads, which has good versatility; a new brake pad braking force detection system of the present invention The microprocessor is located near the braking force electromagnetic detection module, which can reduce the interference caused by the long wire during the signal acquisition process, and is used to collect the output signal of the braking force electromagnetic detection module, and at the same time output the detected braking force through the bus technology. The power data is sent to other systems such as vehicle energy recovery systems to facilitate the work of other systems.
附图说明Description of drawings
为了更清楚地说明本发明实施例，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of the present invention, and those of ordinary skill in the art Generally speaking, on the premise of not paying creative labor, other drawings can also be obtained based on these drawings.
图1为本发明实施例提供的一种新的刹车片制动力检测系统的结构示意图。Fig. 1 is a schematic structural diagram of a new brake pad braking force detection system provided by an embodiment of the present invention.
附图标记说明：1-刹车盘；2-刹车片；3-刹车片驱动装置；301-沉孔；4-弹簧；5-制动力电磁检测模块；501-电感线圈；502-铁芯；503-信号引线；6-数据采集系统总成；7-动作传感器。Explanation of reference signs: 1-brake disc; 2-brake pad; 3-brake pad driving device; 301-counterbore; 4-spring; 5-braking force electromagnetic detection module; 501-inductance coil; 502-iron core; 503 -signal leads; 6-data acquisition system assembly; 7-motion sensor.
具体实施方式Detailed ways
为了进一步了解本发明的内容，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to further understand the content of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention. rather than all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
参考图1所示，本发明实施例提供的一种新的刹车片制动力检测系统的结构示意图，包含刹车盘1、刹车片2、刹车片驱动装置3、弹簧4、制动力电磁检测模块5、数据采集系统总成6和动作传感器7。所述刹车片2与所述刹车片驱动装置3连接，所述刹车片驱动装置3驱动所述刹车片2运动，所述动作传感器7安装在车辆刹车踏板上，所述动作传感器7与数据采集系统总成6经导线连接以实现动作数据的采集，所述制动力电磁检测模块5安装于所述刹车片驱动装置3的沉孔301中且可相对于沉孔301作轴向滑动，所述制动力电磁检测模块5一端与所述弹簧4的一端接触且在弹簧4的压力下令所述制动力电磁检测模块5的另一端压紧在所述刹车片2表面，所述弹簧4的另一端与所述沉孔301底部压紧接触，所述制动力电磁检测模块5与数据采集系统总成6经导线连接以实现所述刹车片制动力的检测；汽车左前、右前、左后、右后四个轮子上均装有所述制动力电磁检测模块5。Referring to Fig. 1, a schematic structural diagram of a new braking force detection system for brake pads provided by an embodiment of the present invention includes a brake disc 1, a brake pad 2, a brake pad driving device 3, a spring 4, and a braking force electromagnetic detection module 5 , data acquisition system assembly 6 and motion sensor 7. The brake pad 2 is connected with the brake pad driving device 3, the brake pad driving device 3 drives the brake pad 2 to move, the motion sensor 7 is installed on the vehicle brake pedal, and the motion sensor 7 is connected with the data acquisition The system assembly 6 is connected by wires to realize the collection of action data. The braking force electromagnetic detection module 5 is installed in the counterbore 301 of the brake pad driving device 3 and can slide axially relative to the counterbore 301. One end of the braking force electromagnetic detection module 5 is in contact with one end of the spring 4 and under the pressure of the spring 4, the other end of the braking force electromagnetic detection module 5 is pressed against the surface of the brake pad 2, and the other end of the spring 4 In contact with the bottom of the counterbore 301, the braking force electromagnetic detection module 5 and the data acquisition system assembly 6 are connected by wires to realize the detection of the braking force of the brake pads; the left front, right front, left rear and right rear of the car The braking force electromagnetic detection module 5 is installed on the four wheels.
所述制动力电磁检测模块5包含电感线圈501、铁芯502和信号引线503，根据测量需要，所述厚度检测模块可以是单个、两个或多个均布，电磁厚度检测模块5与数据采集模块总成6经导线连接；所述数据采集系统总成6与其他如汽车能量回收系统等之间通过总线通信。The braking force electromagnetic detection module 5 includes an inductance coil 501, an iron core 502 and a signal lead wire 503. According to measurement requirements, the thickness detection module can be single, two or more evenly distributed, and the electromagnetic thickness detection module 5 is connected with data acquisition. The module assembly 6 is connected by wires; the data acquisition system assembly 6 communicates with other systems such as the vehicle energy recovery system through a bus.
在本实施例中，当未有刹车动作时，所述刹车片2处于复位状态，所述刹车片2与所述刹车盘1处于相对分离状态，所述刹车片2与所述刹车盘1之间的空气间隙d1和d2较大，即所述制动力电磁检测模块5的空气磁路较长，则所述制动力电磁检测模块5的磁阻值Rm较大；当车辆驾驶人员踩下刹车踏板时，触动所述动作传感器7并产生刹车动作信号，刹车动作信号经导线传递到所述数据采集系统总成6，检测系统进入刹车片制动力检测状态，同时所述刹车片驱动装置3向所述刹车片2提供驱动力，驱动所述刹车片2与所述刹车盘1贴合以实现刹车；当所述刹车片2与所述刹车盘1贴合时，所述刹车片2与所述刹车盘1之间的空气间隙d1和d2消失，所述制动力电磁检测模块5的磁阻值Rm发生跳变，则所检测的电信号发生跳变，进而判断此时所述刹车片2与所述刹车盘1已处于贴合状态，且检测并存储此时所述制动力电磁检测模块5的磁阻值Rm；所述刹车片2与所述刹车盘1贴合后，在制动力的驱动下，所述刹车片2与所述刹车盘1因受到压力而发生形变，即所述刹车片2和所述刹车盘1的厚度发生变化，即所述制动力电磁检测模块5的磁路长度发生变化，则所述制动力电磁检测模块5的磁阻值Rm发生变化，所检测的电信号跟随磁阻值Rm发生变化，所述数据采集系统总成6检测并存储所述制动力电磁检测模块5的磁阻Rm；根据所述数据采集系统总成6所检测到的制动力电磁检测模块的磁阻Rm，由事先标定的磁阻Rm与所述刹车片2所受到的压力的关系得出所述刹车片2的驱动力N，进而根据摩擦系数μ以及相关计算公式计算出制动力F，最终实现刹车片制动力F的检测。In this embodiment, when there is no braking action, the brake pad 2 is in a reset state, and the brake pad 2 and the brake disc 1 are in a relatively separated state. The air gaps d1 and d2 between are larger, that is, the air magnetic circuit of the braking force electromagnetic detection module 5 is longer, and the reluctance value Rm of the braking force electromagnetic detection module 5 is larger; when the vehicle driver steps on the brake When pedaling, the motion sensor 7 is touched to generate a braking action signal, which is transmitted to the data acquisition system assembly 6 through wires, and the detection system enters the braking force detection state of the brake pad, while the brake pad driving device 3-way The brake pad 2 provides a driving force to drive the brake pad 2 and the brake disc 1 to achieve braking; when the brake pad 2 is attached to the brake disc 1, the brake pad 2 and the brake disc 1 The air gaps d1 and d2 between the brake discs 1 disappear, the reluctance value Rm of the braking force electromagnetic detection module 5 jumps, and the detected electrical signal jumps, and then it is judged that the brake pad 2 at this time It is already in a bonded state with the brake disc 1, and detects and stores the reluctance value Rm of the braking force electromagnetic detection module 5 at this time; after the brake pad 2 is bonded to the brake disc 1, the braking force Driven by the driving force, the brake pad 2 and the brake disc 1 are deformed due to pressure, that is, the thickness of the brake pad 2 and the brake disc 1 changes, that is, the magnetism of the braking force electromagnetic detection module 5 If the length of the path changes, the reluctance value Rm of the braking force electromagnetic detection module 5 changes, the detected electrical signal changes with the reluctance value Rm, and the data acquisition system assembly 6 detects and stores the braking force The reluctance Rm of the electromagnetic detection module 5; according to the reluctance Rm of the braking force electromagnetic detection module detected by the data acquisition system assembly 6, the difference between the previously calibrated reluctance Rm and the pressure on the brake pad 2 According to the relationship, the driving force N of the brake pad 2 is obtained, and then the braking force F is calculated according to the friction coefficient μ and related calculation formulas, and finally the detection of the braking force F of the brake pad is realized.
最后说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still can The technical solutions described in the foregoing embodiments are modified, or some or all of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the present invention.
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| CN112477839A (en) * | 2021-01-08 | 2021-03-12 | 山东理工大学 | Reluctance type automobile brake pad thickness detection structure |
| CN115214589A (en) * | 2021-12-14 | 2022-10-21 | 广州汽车集团股份有限公司 | Method for monitoring residual service life of vehicle brake disc, storage medium and vehicle |
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