Vehicle brake disc temperature measuring device

Abstract

The present application proposes a vehicle brake disc temperature measurement device capable of measuring the temperature of a brake disc in a brake system of a vehicle based on phosphorescent sensing and comprising: a phosphorescent material carrier positioned in a non-contact manner with respect to a disc surface of the brake disc and comprising a surface facing the disc surface and containing a phosphorescent material; an excitation unit disposed adjacent to the phosphorescent material carrier and configured to be capable of emitting excitation rays for exciting the phosphorescent material toward the surface; the signal acquisition unit is arranged adjacent to the surface and is configured to be capable of acquiring optical signals emitted from the surface; and the signal processing unit is in communication connection with the signal acquisition unit and is configured to be capable of processing the optical signals acquired by the signal acquisition unit and outputting information representing the temperature of the brake disc based on a pre-stored preset relation between the phosphorescence intensity and the temperature of the brake disc. The system has the advantages of low cost, high accuracy, fast response, no electromagnetic interference and the like.

Description

Technical Field

[0001] The present application relates to a temperature measuring device for temperature detection (or monitoring), and in particular to a vehicle brake disc temperature measuring device. Background Art

[0002] As an important component of the vehicle, the vehicle's braking system plays an important role in ensuring the vehicle's stability during driving and safety in response to emergencies.

[0003] As a common configuration, a vehicle's braking system typically includes a brake disc (also known as a brake caliper) mounted on the wheel and mated to it. The vehicle's braking time is primarily determined by the friction between the caliper and the brake disc. This friction is known to be affected by the friction level of the brake disc, which in turn is affected by the disc's temperature. Therefore, it is necessary to effectively detect (or monitor) the brake disc's temperature to timely adjust the vehicle's braking performance to meet predetermined requirements.

[0004] Currently, for most mass-produced vehicles on the market, braking systems (such as ESP / ABS) typically use a combination of three modes (conduction, convection, and radiation) to dissipate heat, and the brake disc temperature can be calculated using generated software. However, in this case, temperature deviations of up to 100°C or more can sometimes occur between the actual and calculated brake disc temperatures, and the difference between the temperature friction coefficient curve generated from the temperature signal spectrum and the actual friction coefficient can be as much as twice as large.

[0005] Some vehicles also use high-precision, wear-resistant thermocouple sensors to measure brake disc temperature. These sensors, due to direct contact, provide relatively accurate temperature differential and temperature measurements. However, these sensors have a short lifespan and are expensive, making them unsuitable for mass production of complete vehicles.

[0006] Therefore, it is necessary to improve the above-mentioned known prior art to reduce or even eliminate the above-mentioned problems or defects. Utility Model Content

[0007] In view of the above background, the purpose of the present application is to propose a novel vehicle brake disc temperature measuring device, which can at least partially overcome or even completely eliminate the above-mentioned deficiencies or defects in the prior art.

[0008] To this end, the present application proposes a vehicle brake disc temperature measuring device, wherein the vehicle brake disc temperature measuring device is a temperature measuring device capable of measuring the temperature of a brake disc in a vehicle's braking system based on phosphorescence sensing, and comprises:

[0009] a phosphor material carrier positioned in a non-contact manner relative to a disc surface (also referred to as a working surface or a flat surface) of the brake disc and comprising a surface facing the disc surface so as to be able to receive heat from the disc surface and containing the phosphor material;

[0010] an excitation unit, which is disposed adjacent to the phosphorescent material carrier and is configured to emit excitation rays toward the surface for exciting the phosphorescent material to emit phosphorescence;

[0011] a signal collection unit disposed adjacent to the surface and configured to collect optical signals emitted from the surface; and

[0012] A signal processing unit is communicatively connected to the signal acquisition unit and is configured to process the optical signal acquired by the signal acquisition unit and output information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

[0013] According to a feasible implementation manner, the phosphorescent material carrier, the excitation unit, the signal acquisition unit and the signal processing unit can be configured in the form of a modular integral assembly to form an integrated phosphorescent temperature sensor.

[0014] According to a feasible implementation manner, the phosphorescence temperature sensor may include: a phosphorescence temperature sensor body arranged opposite to the brake disc and having an axis perpendicular to the disc surface; and an excitation light source, a heat insulation plate, an optical signal collector (or optical signal capturer) and a processor respectively positioned on the phosphorescence temperature sensor body along the axis, wherein a phosphorescent material layer is provided on the surface of the heat insulation plate facing the disc surface, the excitation light source is configured to emit excitation light toward the phosphorescent material layer, the optical signal collector is capable of collecting the optical signal (i.e., phosphorescence) emitted from the phosphorescent material layer by the excitation light, the processor is communicatively connected to the optical signal collector, and is capable of processing the optical signal collected by the optical signal collector and outputting information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

[0015] According to a feasible implementation manner, the optical signal collector may include a camera, a charge coupled device, and a fiber combiner connected between the camera and the charge coupled device.

[0016] According to a feasible implementation manner, the phosphorescence temperature sensor may further include an optical filter and a temperature compensation / isolator located on the phosphorescence temperature sensor body and arranged between the camera and the heat insulation plate.

[0017] According to a feasible implementation, the phosphorescence temperature sensor may further include a heat protection plate located on the phosphorescence temperature sensor body, the heat protection plate being arranged closer to the brake disc relative to the heat insulation plate, the camera being arranged between the heat protection plate and the heat insulation plate, the heat protection plate being configured to prevent heat from the brake disc from being directly radiated onto the camera and at least partially exposing the phosphorescent material layer on the heat insulation plate.

[0018] According to a feasible implementation manner, the phosphor material layer may be formed in a partial area on the surface of the heat insulation board, and the partial area is located within the illumination range of the camera.

[0019] According to a feasible implementation manner, the phosphorescence temperature sensor body is in the form of a variable-section cylinder and is provided with a plurality of steps, and the heat protection plate and the heat insulation plate are respectively detachably installed at the corresponding steps.

[0020] According to a feasible implementation manner, the phosphorescent material layer may be a phosphorescent material coating or a phosphorescent material film.

[0021] According to a feasible implementation manner, the thickness of the phosphorescent material coating or the phosphorescent material film may be 5-100 μm.

[0022] According to a feasible implementation manner, the phosphorescence temperature measurement sensor body can be detachably mounted on a wheel speed sensor body of the vehicle, and the wheel speed sensor body can be detachably mounted on a steering knuckle close to a braking system of the vehicle.

[0023] According to a feasible implementation manner, the phosphorescence temperature measurement sensor body can be mounted on the wheel speed sensor body in a snap-fit ​​manner.

[0024] According to a feasible implementation manner, the phosphorescence temperature sensor body may include an end protrusion having a groove therein, and the wheel speed sensor body may include a recess having a pin therein, and when the phosphorescence temperature sensor body is installed on the wheel speed sensor body, the end protrusion is inserted into the recess, and the groove and the pin are press-fitted with each other.

[0025] According to a feasible implementation, the excitation light source may be an ultraviolet light source capable of emitting ultraviolet rays or an X-ray light source capable of emitting X-rays.

[0026] As can be seen from the above description, the present application proposes a vehicle brake disc temperature measuring device that can measure the temperature of the vehicle's brake disc based on phosphorescence sensing. The device can utilize temperature-sensitive phosphorescent materials to effectively detect the vehicle's brake disc temperature in a non-contact manner, thereby overcoming the above-mentioned defects or shortcomings in the prior art in a simple and reliable manner, and has the advantages of low cost, high accuracy, fast response, no electromagnetic interference, applicability to high temperature environments and remote monitoring, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The features, advantages and other aspects of the present application will be more clearly understood through the following more detailed description of the present application given with reference to the accompanying drawings and in combination with exemplary embodiments. In the accompanying drawings:

[0028] Figure 1 A schematic diagram of the basic structure (or design principle) of the vehicle brake disc temperature measurement device of the present application;

[0029] Figure 2 is a schematic diagram of a structural assembly, the structural assembly including a vehicle brake disc temperature measuring device and a mounting base thereof according to an exemplary embodiment of the present application;

[0030] Figure 3 for Figure 2 a left side view of the structural assembly shown;

[0031] Figure 4 for Figure 2 A right side view of the body of the vehicle brake disc temperature measuring device in the structural assembly shown;

[0032] Figure 5 for Figure 2 A front view of the body of the vehicle brake disc temperature measuring device in the structural assembly shown;

[0033] Figure 6 for Figure 2 a left side view of the mounting base in the structural assembly shown;

[0034] Figure 7 for Figure 2 A right side view of the vehicle brake disc temperature measuring device shown in FIG. 1 before being mounted on a base;

[0035] Figure 8 For the Figure 7 A cross-sectional view taken along line AA in FIG.

[0036] Figure 9 To show Figure 6 A schematic diagram of a cutaway position of the mounting base shown;

[0037] Figure 10 For the Figure 9A partial cross-sectional view taken along line BB in FIG.

[0038] Figure 11 for Figure 2 Schematic diagram of the signal acquisition process of the vehicle brake disc temperature measurement device shown in;

[0039] Figure 12 A schematic diagram of a wheel portion before the vehicle brake disc temperature measuring device of the present application is installed;

[0040] Figure 13 This is a schematic diagram of a wheel portion equipped with the vehicle brake disc temperature measuring device of the present application. DETAILED DESCRIPTION

[0041] The following describes in detail the specific embodiments of the present application with reference to the accompanying drawings. It should be understood that the embodiments and related descriptions given herein are to be understood as illustrative only and do not constitute limitations on the present application.

[0042] In addition, it should be noted that in different drawings, the same or similar reference numerals indicate components that are substantially the same or similar in structure or function to minimize duplication of description. It should be understood that the sizes, positions, etc. of the components in the drawings are not drawn strictly to scale, and the sizes, proportional relationships, quantities, etc. of the components should not be construed as limitations of this application.

[0043] In addition, it should be noted that, for the sake of simplicity and to more conveniently understand the main improvements or key points of the present application, the specification of the present application and its drawings focus on describing or illustrating the contents related to the improvements or improved parts of the present application, while omitting or simplifying the structures and related descriptions of other parts. As for the details of the structural design, working principle, material selection, etc. of these omitted parts, since they belong to the known technology in the field, and those skilled in the art can make appropriate choices based on the existing knowledge and specific applications in the field, they will not be described here in detail, nor will they be illustrated in detail. In other words, structures well-known in the field are not described in detail to avoid unnecessarily blurring the core or essence of the present application. Moreover, the drawings of the present application mainly show components related to the design or main improvements of the present application, but this does not mean that other components are not included, but rather that they are omitted.

[0044] Moreover, for convenience, in the following description of this application, the design points or main improvements, specific implementation methods and advantages of this application will be described in detail using an integrated phosphorescent temperature measurement sensor that can be installed on a vehicle's wheel speed sensor as an example, but this application is obviously not limited to this.

[0045] First, as mentioned above, existing known vehicle brake disc temperature measurement devices have drawbacks such as large deviations between the results calculated using common software and the actual temperature, as well as short lifespan and high cost of sensors that directly measure in contact.

[0046] In view of the above background, the inventors of the present application noted that phosphorescent materials (such as phosphor powders) are substances that can absorb thermal energy and emit light (i.e., phosphorescence) when excited by light sources such as ultraviolet rays and X-rays. When heated, electrons in phosphorescent materials transition from a ground state to an excited state, and then emit photons when returning to the ground state through a non-radiative transition, resulting in luminescence (which may be referred to as thermoluminescence). In addition, it is known that the luminescence intensity of phosphorescent materials exhibits a certain correlation with temperature. Therefore, phosphorescent materials can be used for temperature measurement. Moreover, the temperature measurement method using phosphorescent materials has the advantages of fast response, no electromagnetic interference, and applicability to high-temperature environments and remote monitoring.

[0047] On this basis, the inventors of the present application realized that if the phosphorescent material temperature measurement technology is applied to the temperature measurement of the vehicle brake disc, it will be possible to effectively overcome or even completely eliminate the above-mentioned deficiencies or defects in the prior art.

[0048] Therefore, if Figure 1 As shown, in order to overcome the above-mentioned defects in the prior art, the present application proposes a novel vehicle brake disc temperature measuring device, wherein the vehicle brake disc temperature measuring device is a temperature measuring device capable of measuring the temperature of the brake disc in the vehicle's braking system based on phosphorescence sensing, and comprises:

[0049] a phosphor material carrier 1, which is positioned relative to the disc surface of the brake disc in a non-contact manner (in particular, is installed close to the disc surface) and includes a surface facing the disc surface so as to be able to receive heat from the disc surface and containing the phosphor material;

[0050] an excitation unit 2, which is disposed adjacent to the phosphorescent material carrier 1 and is configured to emit excitation radiation (or excitation light) toward the surface for exciting the phosphorescent material to emit phosphorescence;

[0051] a signal collection unit 3 , which is disposed adjacent to the surface and configured to collect optical signals (ie, phosphorescence) emitted from the surface; and

[0052] The signal processing unit 4 is communicatively connected to the signal acquisition unit 3 and is configured to process the optical signal acquired by the signal acquisition unit 3 and output information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

[0053] The design or working principle of the vehicle brake disc temperature measurement device of this application can be summarized as follows:

[0054] The present application measures the temperature of a vehicle's brake disc based on phosphorescence sensing (which utilizes the thermoluminescence properties of phosphorescent materials), wherein a phosphorescent material carrier 1 positioned relative to the disc surface of the brake disc in a non-contact manner and including a surface facing the disc surface so as to receive heat from the disc surface and containing a phosphorescent material can be used to receive heat from the brake disc; an excitation unit 2 arranged adjacent to the phosphorescent material carrier 1 can be used to emit excitation rays toward the surface for exciting the phosphorescent material to emit phosphorescence; a signal acquisition unit 3 arranged adjacent to the surface can be used to acquire an optical signal (i.e., phosphorescence) emitted from the surface; and a signal processing unit 4 communicated with the signal acquisition unit 3 can be used to process the optical signal acquired by the signal acquisition unit 3 and output information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

[0055] It should be noted that the vehicle brake disc temperature measurement device of the present application can be subjected to phosphorescence temperature calibration or calibration as needed before installation and use, that is, the predetermined relationship between phosphorescence intensity and brake disc temperature is determined and stored (for example, pre-stored in the memory of the signal processing unit, etc.). More specifically, during the calibration process, the phosphorescent material (which is the same as the phosphorescent material carried or contained in the phosphorescent material carrier 1) can be placed at a series of temperatures that can simulate the use state of the brake disc to be measured, and its luminescence intensity is measured, and a predetermined relationship model is established between it and the corresponding temperature. By establishing a mapping relationship such as a temperature-light intensity curve or table, the luminescence intensity value obtained through measurement can be converted into the corresponding temperature value, so that the actual temperature of the brake disc can be accurately determined.

[0056] Thus, the present application proposes a vehicle brake disc temperature measurement device that can measure the temperature of a vehicle's brake disc in a non-contact manner based on phosphorescence sensing (which utilizes the thermoluminescence properties of phosphorescent materials). The device measures the temperature of the brake disc by converting the intensity of phosphorescence emitted and sensed by a phosphorescent material intentionally disposed near the brake disc surface into a corresponding temperature value. In particular, by applying the vehicle brake disc temperature measurement device of the present application near the vehicle's braking system, it can effectively overcome the defects or deficiencies of the above-mentioned prior art while having the advantages of low cost, high accuracy, fast response, no electromagnetic interference, applicability to high temperature environments, and remote monitoring. It can also provide a more accurate braking control strategy (for example, a brake control strategy that can provide feedforward) and save braking energy.

[0057] Advantageously, the phosphorescent material carrier 1 , the excitation unit 2 , the signal acquisition unit 3 and the signal processing unit 4 in the present application can be configured in the form of a modular integral assembly to form an integrated phosphorescent temperature sensor.

[0058] In order to more clearly understand the details, features and advantages of the vehicle brake disc temperature measuring device of the present application, the following is combined with Figures 2 to 13 Exemplary embodiments of the present application are described in detail.

[0059] In particular, the vehicle brake disc temperature measuring device of the present application will be further described or explained in detail below using an integrated phosphorescence temperature sensor that can be installed on a vehicle's wheel speed sensor as an example (in other words, an integrated phosphorescence intensity acquisition and processing device that can be installed on a wheel speed sensor, for example) as an example, but it is obviously not limited to this.

[0060] Figure 2 A schematic diagram of a structural assembly (also referred to as a connector assembly) is shown in a non-limiting example, wherein the structural assembly includes a vehicle brake disc temperature measuring device (such as a brake disc temperature measuring device) according to an exemplary embodiment of the present application. Figure 2 As shown in the left dashed box in FIG, which can also be called a phosphorescent temperature sensor) and its mounting base (as shown in FIG. Figure 2 As shown in the dotted box on the right side of the figure, it may be a wheel speed sensor commonly used in vehicles for detecting the speed of the wheel).

[0061] More specifically, if Figure 2 As shown, the vehicle brake disc temperature measurement device (i.e., phosphorescence temperature sensor) according to an exemplary embodiment of the present application may include:

[0062] With brake disc ( Figure 2 Not shown, it will be located in the Figure 2 A phosphorescent temperature sensor body 11 (also referred to as a female connector end) is arranged opposite to the left side of the vehicle brake disc temperature measuring device shown in FIG. 1 and has an axis perpendicular to the disc surface of the brake disc; and

[0063] The excitation light source (or incident light source) 15, the heat shield 17, the optical signal collector (described in detail later), and the processor (not shown in the figure, which can adopt various types of processors known in the art and can be equipped with related memory) are respectively positioned on the phosphorescent temperature sensor body 11 along the axis. The surface of the heat shield 17 facing the brake disc ( Figure 2A phosphor material layer 16 is provided on the left side surface of the heat insulation plate 17 in the brake disc (the surface is, for example, parallel to the surface of the brake disc in the use state), the excitation light source 15 is configured to emit excitation light toward the phosphor material layer 16, the optical signal collector is capable of collecting the optical signal (i.e., phosphorescence) emitted from the phosphor material layer 16 by the excitation light, the processor is communicatively connected to the optical signal collector, and is capable of processing the optical signal collected by the optical signal collector and outputting information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

[0064] In addition, the inventors of this application noticed that the wheel speed sensor is usually located near the brake disc (for example, installed on the steering knuckle of the braking system close to the vehicle), so it is possible to consider using a vehicle brake disc temperature measuring device (i.e., a phosphorescence temperature sensor) in combination with the wheel speed sensor to save space.

[0065] For this reason, Figures 2 to 10 As shown, the phosphorescence temperature sensor body 11 can be detachably mounted on the wheel speed sensor body 21 of the vehicle (in this case, the wheel speed sensor body 21 will serve as the mounting base of the phosphorescence temperature sensor and can be called the male end of the connector), so as to form a connector assembly that can be integrally mounted and detached. This can conveniently measure the temperature of the brake disc while having the advantages of being easy to install and use, saving space, etc., wherein the wheel speed sensor body 21 can be mounted in a manner known in the art, for example, it can be mounted with the help of a bushing 22 (see Figure 3 ) is mounted on the vehicle's steering knuckle 32 (see Figure 13 ) or can be installed on the vehicle wheel hub. In addition, it is obvious that the vehicle brake disc temperature measurement device of the present application (especially the phosphorescent temperature sensor body 11) can also be installed at other locations near the brake disc or on other components in the vehicle, and the distance between it and the disc surface of the brake disc can be set or adjusted according to specific circumstances and actual needs, as long as it can achieve the temperature measurement purpose of the present application.

[0066] The following combination Figures 2 to 13 Further explanation or description is given of the various components related to the vehicle brake disc temperature measuring device of the present application, as well as their design and working principle.

[0067] from Figure 2 、 Figure 11 As can be seen from FIG, the optical signal collector in the vehicle brake disc temperature measuring device of the present application may include a camera (especially a high-speed camera) 13, a charge coupled device CCD, and a fiber optic combiner FC connected between the camera 13 and the charge coupled device CCD, wherein Figure 11As shown in the dotted box in FIG, the above components can be collectively referred to as a CCD camera.

[0068] like Figure 11 As shown, when the excitation light source 15 emits excitation light toward the phosphor material layer 16 on the surface of the heat insulation board 17, the phosphor material layer 16 will be excited to emit an optical signal (ie, phosphorescence). Figure 11 The cameras 13 (shown as four in the figure, but not limited to these) can respectively collect optical signals emitted by the phosphor material layer 16 in real time, and transmit and convert the collected optical signals into corresponding charge signals (or electrical signals) via the fiber optic combiner FC and the charge-coupled device CCD, thereby obtaining related images and phosphorescence intensity information, and transmitting the information to the processor for subsequent processing. Since the present application can selectively use various types of charge-coupled devices (CCDs), fiber optic combiners FC, and processors known in the art according to actual needs, for the sake of simplicity, further detailed descriptions of these components are omitted here.

[0069] like Figure 2 As shown, the vehicle brake disc temperature measurement device (i.e., phosphorescence temperature sensor) according to an exemplary embodiment of the present application may further include an optical filter and temperature compensator / isolator 14 located on the phosphorescence temperature sensor body 11 and disposed between the camera 13 and the heat shield 17 to effectively perform optical filtering and temperature compensation / isolation processing on the optical signal emitted from the phosphorescent material layer 16 before reaching the camera 13, thereby improving the accuracy and reliability of signal processing (for example, effective optical filtering can enhance the phosphorescence signal, reduce background noise, and improve the sensitivity and accuracy of the entire device / system, while effective temperature compensation / isolation processing can eliminate errors caused by ambient temperature changes). Similarly, since the present application can selectively use various optical filters and temperature compensators / isolators known in the art according to actual needs, for the sake of brevity, a detailed description of more details about this component is omitted here.

[0070] like Figure 2 、 Figure 3 As shown, the vehicle brake disc temperature measurement device (i.e., phosphorescence temperature sensor) according to an exemplary embodiment of the present application may further include a heat protection plate 12 located on the phosphorescence temperature sensor body 11, which is arranged closer to the brake disc than the heat shield 17, wherein the camera 13 is arranged between the heat protection plate 12 and the heat shield 17, and the heat protection plate 12 is configured to prevent heat from the brake disc from being directly radiated to the camera 13, thereby providing effective thermal protection for the camera 13 and at least partially exposing the phosphorescence material layer 16 on the heat shield 17 (from the heat shield 17). Figure 3As can be seen in the figure, the heat protection plate 12 can be in the form of a plurality of fan-shaped blades uniformly arranged at predetermined intervals in the circumferential direction, but is not limited thereto. Furthermore, in this case, as a non-limiting example, the phosphor material layer 16 can be formed in a partial area on the surface of the heat shield 17, said partial area being within the illumination range of the camera 13. In particular, by forming the phosphor material layer 16 in a partial area on the surface of the heat shield 17 (rather than on the entire surface), the amount of phosphor material used can be reduced, thereby saving costs.

[0071] It should be noted that, as a non-limiting example, the heat shield 17 can be made of the same material as the vehicle's own heat shield and cut and separated from the vehicle's heat shield to provide a heat shield for the vehicle. Figure 2 Thermal protection of the wheel speed sensor shown in .

[0072] The following combination Figures 4 to 10 The specific structures of the body of the vehicle brake disc temperature measuring device and its mounting base according to an exemplary embodiment of the present application are further described.

[0073] As can be seen from the previous description, the phosphorescence temperature sensor body 11 (which serves as the body of the vehicle brake disc temperature measuring device of the present application) is designed to be assembled with various components such as the heat insulation plate 17, the heat protection plate 12, the camera 13, etc., and can be used in conjunction with the wheel speed sensor body 21.

[0074] In this case, if Figure 4 、 Figure 5 As shown, as a non-limiting example, the phosphorescence temperature sensor body 11 can be designed in the form of a variable-section cylinder and provided with multiple steps, and components such as the heat protection plate 12 and the heat insulation plate 17 can be detachably installed at the corresponding steps.

[0075] In addition, from Figure 5 As can be seen from the figure, the phosphorescent temperature sensor body 11 may have an axis substantially perpendicular to the disc surface of the brake disc, and one end ( Figure 5 The left end portion in the drawing) may be provided with threads to facilitate the installation of related components and provide additional positioning / limiting functions (such as cooperation with a nut).

[0076] Furthermore, advantageously, as a non-limiting example of the present application, the phosphorescence temperature measurement sensor body 11 is mounted on the wheel speed sensor body 21 in a snap-fit ​​manner.

[0077] More specifically, if Figure 4 、 Figure 7 、 Figure 8 As shown, the phosphorescent temperature sensor body 11 may include an end protrusion with a groove (also referred to as a terminal hole) 18 provided therein. Figure 6 、 Figure 9 、 Figure 10 As shown, the wheel speed sensor body 21 may include a recess in which a pin (also referred to as a terminal or pin) 23 is provided. When the phosphorescent temperature sensor body 11 is mounted on the wheel speed sensor body 21, the end protrusion is inserted into the recess, and the groove 18 and the pin 23 are pressed together. Figure 4 、 Figure 7 as well as Figure 6 、 Figure 9 In the embodiment, the number of the grooves 18 and the pins 23 is shown as 4, but it is obviously not limited thereto. In other words, the number, shape and location of the grooves 18 and the pins 23 can be appropriately adjusted or changed according to actual needs.

[0078] It should be pointed out that, as a non-limiting example, the phosphorescent material in the present application can be various types of phosphorescent materials known in the art, for example, oxides, sulfides or rare earth luminescent materials such as zirconium oxide (YSZ), and the phosphorescent material layer 16 can be a phosphorescent material coating (which is formed on the surface of the thermal insulation board 17 in the form of a coating, for example) or a phosphorescent material film (which is provided on the surface of the thermal insulation board 17 in the form of plating or adhesion, and preferably a phosphorescent material coating that is more suitable for phosphorescence temperature measurement technology is used. In addition, the thickness of the phosphorescent material coating or the phosphorescent material film can be determined according to experiments or experience, for example, preferably 5-100 μm, but not limited to this, that is, it can be appropriately adjusted or changed according to specific applications or actual needs.

[0079] In addition, the excitation light source 15 in the present application can be an ultraviolet light source capable of emitting ultraviolet rays or an X-ray light source capable of emitting X-rays, and an ultraviolet light source is preferably used as the excitation light source for the phosphorescent material, but is not limited thereto.

[0080] like Figure 12 、 Figure 13 As shown, the brake disc temperature measuring device (i.e., phosphorescent temperature sensor) and its mounting base (i.e., wheel speed sensor) according to an exemplary embodiment of the present application can be installed near the brake disc 32 of the vehicle in a combined manner as an integral structural component, wherein Figure 12 shows a schematic diagram of a wheel portion before the structural assembly is installed, Figure 13 It is a schematic diagram of the wheel part after the structural assembly is installed.

[0081] from Figure 13 It can be seen that the structural component ( Figure 13As shown in the dotted box in FIG), it can be installed as a whole on the steering knuckle 32 close to the braking system and located near the brake disc 32 (wherein, as mentioned above, the phosphorescence temperature sensor body 11 is detachably mounted on the wheel speed sensor body 21, and the wheel speed sensor body 21 is detachably mounted on the steering knuckle 32).

[0082] After being assembled and installed, the brake disc temperature measuring device of the present application can operate, for example, in the following manner:

[0083] After the vehicle is started, for example, under the control of the vehicle control unit, the brake disc temperature measuring device of the present application can be used to detect the temperature of the vehicle's brake disc in real time as needed, wherein under the excitation action of the excitation light emitted by the excitation light source 15 toward the phosphorescent material layer 16 on the surface of the heat insulation plate 17, the phosphorescent material layer 16 emits a corresponding optical signal (i.e., phosphorescence), which is collected in real time by the camera 13 and transmitted and converted into a corresponding charge signal (or electrical signal) via the fiber optic combiner FC and the charge coupled device CCD, thereby recording and obtaining information related to the change and distribution of the received phosphorescence intensity, and transmitting it to the processor for subsequent processing, so that information such as the phosphorescence intensity emitted by the phosphorescent material layer can be obtained in real time through image acquisition (or recognition), data processing, etc., and the obtained luminous intensity value is converted into the temperature value of the brake disc based on the calibration relationship model as described above. The temperature value can be output to an external storage device or display unit in the required data form, or can be sent wirelessly to a remote device to realize remote monitoring function.

[0084] Thus, the present application proposes a vehicle brake disc temperature measuring device capable of measuring the temperature of a vehicle's brake disc based on phosphorescence sensing. The device can detect the temperature of the vehicle's brake disc in a non-contact manner using a temperature-sensitive phosphorescent material, thereby overcoming the defects or deficiencies in the prior art as described above in a simple manner, and has the advantages of low cost, high accuracy, fast response, no electromagnetic interference, applicability to high temperature environments, and remote monitoring. Moreover, the vehicle brake disc temperature measuring device of the present application can be configured in the form of a modular integral assembly (i.e., it can be configured as an integrated phosphorescence temperature sensor), and can be detachably assembled with an existing known wheel speed sensor for use, thereby effectively saving installation space, and having the advantages of simple structure, ease of use, and reliable performance.

[0085] The basic structure, operating principle, and main components of the vehicle brake disc temperature measurement device of the present application have been described in detail above in conjunction with specific embodiments. It should be noted that further details regarding the relevant components of this application (e.g., the materials and specific construction of the heat shield, heat protection plate, camera, etc.) can be selectively applied based on existing knowledge in the art (and can be varied according to actual needs and specific applications to achieve optimal design and use effects), and their operating principles and usage methods are well known in the art, and therefore will not be detailed herein.

[0086] Furthermore, as previously mentioned, the embodiments described above and shown in the accompanying drawings should be understood as illustrative and not limiting of the present application. Those skilled in the art may freely select or apply the various components based on the specific application, operating environment, usage requirements, and the like, in combination with relevant knowledge or techniques known in the art. Furthermore, those skilled in the art may make various modifications or variations without departing from the spirit of the present application. Obviously, such modifications or variations do not depart from the scope of the present application.

Claims

1. A vehicle brake disc temperature measuring device, characterized in that: The vehicle brake disc temperature measuring device is a temperature measuring device capable of measuring the temperature of a brake disc in a vehicle's brake system based on phosphorescence sensing, and includes: A phosphor material carrier (1) positioned relative to the disc surface of the brake disc in a non-contact manner and comprising a surface facing the disc surface so as to receive heat from the disc surface and containing the phosphor material; an excitation unit (2), which is arranged adjacent to the phosphorescent material carrier (1) and is configured to emit excitation rays toward the surface for exciting the phosphorescent material to emit phosphorescence; a signal collection unit (3), which is arranged adjacent to the surface and is configured to collect optical signals emitted from the surface; and A signal processing unit (4) is communicatively connected to the signal acquisition unit (3) and is configured to process the optical signal acquired by the signal acquisition unit (3) and output information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescence intensity and the brake disc temperature.

2. The vehicle brake disc temperature measuring device according to claim 1, characterized in that: The phosphorescent material carrier (1), the excitation unit (2), the signal acquisition unit (3) and the signal processing unit (4) are configured in the form of modular integral assemblies and constitute an integrated phosphorescent temperature sensor.

3. The vehicle brake disc temperature measuring device according to claim 2, characterized in that: The phosphorescence temperature sensor comprises: a phosphorescent temperature measurement sensor body (11) disposed opposite to the brake disc and having an axis perpendicular to the disc surface; and An excitation light source (15), a heat shield (17), an optical signal collector, and a processor are positioned on the phosphorescent temperature sensor body (11) along the axis, respectively. A phosphorescent material layer (16) is provided on the surface of the heat shield (17) facing the disc surface. The excitation light source (15) is configured to emit excitation light toward the phosphorescent material layer (16). The optical signal collector is capable of collecting optical signals emitted from the phosphorescent material layer (16) by the excitation light. The processor is communicatively connected to the optical signal collector and is capable of processing the optical signals collected by the optical signal collector and outputting information representing the temperature of the brake disc based on a pre-stored predetermined relationship between the phosphorescent intensity and the brake disc temperature.

4. The vehicle brake disc temperature measuring device according to claim 3, characterized in that: The optical signal collector comprises a camera (13), a charge coupled device (CCD), and a fiber combiner (FC) connected between the camera (13) and the charge coupled device (CCD).

5. The vehicle brake disc temperature measuring device according to claim 4, characterized in that: The phosphorescence temperature sensor further comprises an optical filter and temperature compensation / isolator (14) located on the phosphorescence temperature sensor body (11) and arranged between the camera (13) and the heat insulation plate (17).

6. The vehicle brake disc temperature measuring device according to claim 4, characterized in that: The phosphorescence temperature sensor further comprises a heat protection plate (12) located on the phosphorescence temperature sensor body (11), the heat protection plate (12) being arranged closer to the brake disc than the heat insulation plate (17), the camera (13) being arranged between the heat protection plate (12) and the heat insulation plate (17), the heat protection plate (12) being configured to prevent heat from the brake disc from being directly radiated to the camera (13) and at least partially exposing the phosphorescence material layer (16) on the heat insulation plate (17).

7. The vehicle brake disc temperature measuring device according to claim 4, characterized in that: The phosphor material layer (16) is formed in a partial area on the surface of the heat insulation board (17), and the partial area is located within the irradiation range of the camera (13).

8. The vehicle brake disc temperature measuring device according to claim 6, characterized in that: The phosphorescence temperature sensor body (11) is in the form of a variable-section cylinder and is provided with a plurality of step portions, and the heat protection plate (12) and the heat insulation plate (17) are respectively detachably mounted on the corresponding step portions.

9. The vehicle brake disc temperature measuring device according to any one of claims 3 to 8, characterized in that: The phosphorescent material layer (16) is a phosphorescent material coating or a phosphorescent material film.

10. The vehicle brake disc temperature measuring device according to claim 9, characterized in that: The thickness of the phosphorescent material coating or the phosphorescent material film is 5-100 μm.

11. The vehicle brake disc temperature measuring device according to any one of claims 3 to 8, characterized in that: The phosphorescence temperature sensor body (11) is detachably mounted on a wheel speed sensor body (21) of the vehicle, and the wheel speed sensor body (21) is detachably mounted on a steering knuckle (32) close to a braking system of the vehicle.

12. The vehicle brake disc temperature measuring device according to claim 11, characterized in that: The phosphorescence temperature sensor body (11) is mounted on the wheel speed sensor body (21) in a snap-fit ​​manner.

13. The vehicle brake disc temperature measuring device according to claim 12, characterized in that: The phosphorescence temperature sensor body (11) includes an end protrusion with a groove (18) provided therein, and the wheel speed sensor body (21) includes a recess with a pin (23) provided therein. When the phosphorescence temperature sensor body (11) is mounted on the wheel speed sensor body (21), the end protrusion is inserted into the recess, and the groove (18) and the pin (23) are press-fitted with each other.

14. The vehicle brake disc temperature measuring device according to any one of claims 3 to 8, characterized in that: The excitation light source (15) is an ultraviolet light source capable of emitting ultraviolet rays or an X-ray light source capable of emitting X-rays.

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