Wheel end temperature monitoring sensor

Abstract

This application provides a wheel-end temperature monitoring sensor, comprising: a housing, on which a metal heat-conducting element and a permanent magnet are fixedly disposed, the metal heat-conducting element at least partially protruding from the surface of the housing to contact the surface of the object being measured, and inside the housing, a temperature measuring module and a battery for powering the temperature measuring module. The temperature measuring module includes a PCB board, a data processing module disposed on the PCB board, a temperature measuring chip, and a transmitting antenna, wherein the temperature measuring chip is in contact with the metal heat-conducting element. The wheel-end temperature monitoring sensor provided by this application allows the metal heat-conducting element to directly transfer the temperature of the axle to the temperature measuring chip, avoiding the influence of spacing on the accuracy of temperature measurement.

Description

Technical Field

[0001] This application belongs to the field of vehicle safety monitoring technology, and more specifically, relates to a wheel end temperature monitoring sensor. Background Technology

[0002] Heavy vehicles require particular attention to axle temperature during operation. Axle temperature monitoring equipment typically measures thermal radiation, usually by fastening the sensor to the inner fender or wheel hub with screws or other fasteners. However, in this thermal radiation measurement approach, the distance between the sensor and the axle surface causes the measured temperature to be slightly lower than the actual axle temperature, potentially posing a safety risk. Furthermore, existing sensors also present installation challenges. Utility Model Content

[0003] The purpose of this application is to provide a wheel end temperature monitoring sensor to solve the technical problems of inaccurate temperature measurement and inconvenient assembly in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application embodiment is to provide a wheel end temperature monitoring sensor, which includes a housing, on which a metal heat-conducting component and a permanent magnet are fixedly disposed. The metal heat-conducting component protrudes at least partially from the surface of the housing to be in contact with the surface of the object being measured. Inside the housing, a temperature measuring module and a battery for powering the temperature measuring module are disposed. The temperature measuring module includes a PCB board, a data processing module disposed on the PCB board, a temperature measuring chip, and a transmitting antenna, wherein the temperature measuring chip is in contact with the metal heat-conducting component.

[0005] Optionally, a mounting groove is provided on the opposite side of the side of the housing where the metal heat-conducting component and the permanent magnet are located, and the temperature measuring module and the battery are sealed in the mounting groove.

[0006] Optionally, epoxy resin or polyurethane is filled into the mounting groove, the epoxy resin being used to seal the temperature measuring module and the battery within the mounting groove.

[0007] Optionally, the metal heat-conducting component is made of iron.

[0008] Optionally, the metal heat-conducting component is fixedly mounted on the housing by injection molding.

[0009] Optionally, at least two flanges are provided on the outer peripheral wall of the metal heat conductor along its height direction around the circumference of the metal heat conductor, and a groove is formed between two adjacent flanges.

[0010] Optionally, an assembly groove is provided on the metal heat-conducting component, and the permanent magnet is fixedly connected to the assembly groove.

[0011] Optionally, the metal heat-conducting component is circular, and the assembly groove and the permanent magnet are both annular.

[0012] Optionally, a mounting groove is provided on the opposite side of the side of the housing where the metal heat-conducting component and the permanent magnet are located, and the temperature measuring module and the battery are sealed in the mounting groove; a contact portion is provided protruding from the center of the circular part of the metal heat-conducting component, and the contact portion protrudes from one side of the surface facing the mounting groove so as to be able to contact the temperature measuring chip.

[0013] Optionally, the permanent magnet and the metal heat-conducting component are fixedly connected by adhesive.

[0014] The wheel end temperature monitoring sensor provided in this application embodiment has at least the following beneficial effects:

[0015] By setting a permanent magnet on the housing, the wheel end temperature monitoring sensor can be easily assembled to adhere to the outer surface of the axle. At the same time, a temperature measuring chip is set inside the housing and a metal heat-conducting component is set on the housing, so that the opposite sides of the metal heat-conducting component can contact the axle surface and the temperature measuring chip respectively. In this way, the metal heat-conducting component can directly transfer the temperature of the axle to the temperature measuring chip, avoiding the existence of gaps that would affect the accuracy of temperature measurement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a wheel-end temperature monitoring sensor mounted on an axle in some embodiments of this application;

[0018] Figures 2 to 3 These are perspective views of the wheel end temperature monitoring sensor from different angles in some embodiments of this application;

[0019] Figures 4 to 5 These are exploded views of the wheel end temperature monitoring sensor from different perspectives in some embodiments of this application. Detailed Implementation

[0020] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0021] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0022] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0023] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0026] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0027] Please refer to the following: Figures 1 to 5 The wheel end temperature monitoring sensor provided in the embodiments of this application will now be described.

[0028] Understandably, reference Figure 1 The wheel-end temperature monitoring sensor provided in this application embodiment is used to be mounted on an axle 600. More specifically, the wheel-end temperature monitoring sensor is magnetically attached to the outer surface of the axle 600 near the wheel hub. Thus, during sensor installation and removal, it is only necessary to attach the sensor to the surface of the axle 600 or forcibly remove it, making the process simple and convenient. Simultaneously, a receiver is installed inside the vehicle's cabin (e.g., on the center console). Each axle 600 has a wheel-end temperature monitoring sensor magnetically attached to the area near its respective wheel hub. Each wheel-end temperature monitoring sensor transmits data to the receiver via Bluetooth. The receiver acquires the real-time temperature signal monitored by each sensor and transmits this signal to a user terminal (e.g., a display screen) so that the driver can understand the real-time temperature of each axle 600.

[0029] Understandably, reference Figures 2 to 5The wheel end temperature monitoring sensor provided in this application includes a housing 100, on which a metal heat-conducting component 200 and a permanent magnet 300 are fixedly disposed.

[0030] The metal heat-conducting component 200 protrudes at least partially from the surface of the housing 100 to be able to contact the surface of the object being measured (i.e., the outer surface of the axle 600). Similarly, the permanent magnet 300 may also protrude from the surface of the housing 100 to contact the outer surface of the axle 600. The metal heat-conducting component 200 may be made of a magnetic material.

[0031] refer to Figures 3 to 5 A temperature measuring module 400 and a battery 500 for powering the temperature measuring module 400 are disposed inside the housing 100. The temperature measuring module 400 includes a PCB board 410, a data processing module disposed on the PCB board 410, a temperature measuring chip 420, and a transmitting antenna 430, wherein the temperature measuring chip 420 is in contact with the metal heat-conducting component 200. The PCB board 410 is detachably and fixedly disposed inside the housing 100. For example, in some embodiments, a mounting groove 110 is provided on the opposite side of the side of the housing 100 where the metal heat-conducting component 200 and the permanent magnet 300 are disposed. A locking block for supporting the PCB board 410 is provided on the bottom or side wall of the mounting groove 110. Some of the locking blocks are provided with threaded holes, and the PCB board 410 is locked and fixed to the locking block by screws.

[0032] Further reference Figure 3 The temperature sensing module 400 and battery 500 are sealed within the mounting groove 110. For example, a cover plate is fixed to the opening of the mounting groove 110 with screws, and a sealing ring is provided around the cover plate; or, epoxy resin is poured into the mounting groove 110, completely filling the mounting groove 110 to completely seal the temperature sensing module 400 within it. Thus, since the wheel end temperature monitoring sensor is adsorbed onto the outer surface of the axle 600, moisture from rain, fog, or flooded roads can be prevented from entering the temperature sensing module 400 and / or battery 500, thus avoiding monitoring failure.

[0033] Further reference Figures 3 to 5 The battery 500 can be a button cell battery 500. Pins 440 connected to the positive and negative terminals of the button cell battery 500 are provided on the PCB board 410. Specifically, each pin is L-shaped and includes a support portion and a clamping portion. The clamping portions of each pin 440 are arranged in the same height direction, forming a space between the clamping portions of each pin 440 for clamping and fixing the button cell battery 500. The button cell battery 500 is clamped and fixed above the PCB board 410 by two pins 440. With this arrangement, no additional components for fixing the battery 500 are needed in the mounting slot 110, simplifying the internal structure of the monitor and making assembly more convenient.

[0034] Furthermore, an insulating sleeve is provided on the outer side of the battery 500 where it does not contact the pin 440. This effectively prevents short circuits between the positive and negative terminals of the battery 500, thereby improving the reliability of the monitor.

[0035] In some embodiments, the aforementioned metal heat-conducting element 200 is made of iron.

[0036] Furthermore, based on the aforementioned embodiments, the metal heat-conducting component 200 is embedded in the injection mold during the injection molding process of the housing 100, and can be directly fixed to the housing 100 during the injection molding process, thereby eliminating the cumbersome steps of later assembly. Moreover, the connection between the metal heat-conducting component 200 and the housing 100 is relatively firm, which can avoid the risk of loosening of the connection later.

[0037] Further reference Figure 4 and Figure 5 To ensure a stronger connection between the metal heat-conducting component 200 and the housing 100 during injection molding, at least two flanges 210 are provided along the height direction of the outer peripheral wall of the metal heat-conducting component 200, surrounding its circumference. A groove 220 is formed between adjacent flanges 210. This arrangement increases the strength of the connection between the housing 100 and the metal heat-conducting component 200.

[0038] Further reference Figure 4 and Figure 5 Based on the aforementioned embodiments, an assembly groove 230 is provided on the metal heat-conducting component 200, and the permanent magnet 300 is fixedly connected to the assembly groove 230. It is understood that the assembly groove 230 can be circular, annular, rectangular, etc., and is not specifically limited thereto. The permanent magnet 300 is bonded and fixed to the metal heat-conducting component 200 in the assembly groove 230 using AB adhesive. By providing the assembly groove 230 on the metal heat-conducting component 200 and assembling the permanent magnet 300 in the assembly groove 230, on the one hand, since the metal heat-conducting component 200 is made of iron, the metal heat-conducting component 200 and the permanent magnet 300 can be initially fixed together by magnetic force; on the other hand, the bonding and fixing of the permanent magnet 300 and the metal heat-conducting component 200 using AB adhesive can improve the firmness and stability of the connection between the two.

[0039] It should be understood that the wheel-end temperature monitoring sensors described in the embodiments of this application are mounted on the axle 600 (especially the axle 600 of heavy vehicles). During vehicle operation (especially under heavy load conditions), the temperature of the axle 600 generally reaches 80°C or even higher, meaning that the operating environment temperature of the wheel-end temperature monitoring sensor is relatively high. To avoid the influence of high-temperature environment on magnetic adsorption, refer to... Figure 2 , Figure 4 and Figure 5 In some embodiments of this application, the metal heat-conducting component 200 and the permanent magnet 300 are configured as follows: the metal heat-conducting component 200 is circular, and the aforementioned assembly groove 230 and the permanent magnet 300 are both annular.

[0040] By arranging the metal heat-conducting component 200 and the permanent magnet 300 in this way, at least the following advantages are achieved:

[0041] Firstly, due to the high magnetic permeability of iron, when an annular mounting groove 230 is provided on one side of the metal heat-conducting component 200, and an annular permanent magnet 300 is bonded in the mounting groove 230, a low magnetic resistance loop can be formed on the metal heat-conducting component 200. This allows the magnetic field lines generated by the permanent magnet 300 to be confined inside the metal heat-conducting component 200, thereby reducing external magnetic field leakage. When the magnetic field lines are guided into the metal heat-conducting component 200 to form a closed loop, the energy required for the permanent magnet 300 to maintain the orderly arrangement of magnetic domains is reduced. This makes the magnetic field generated by the permanent magnet 300 more stable at high temperatures. In other words, under high-temperature conditions, the magnetic attraction of the permanent magnet 300 to the axle 600 is more stable, and the wheel end temperature monitoring sensor can maintain stable attraction under bumpy road conditions.

[0042] Secondly, the surface of the metal heat-conducting component 200 is magnetized to generate an additional magnetic field, which is superimposed on the magnetic field of the permanent magnet 300 to increase the local magnetic field strength. In this way, the magnetic attraction of the permanent magnet 300 to the axle 600 can be more stable, and the wheel end temperature monitoring sensor can maintain stable attraction under bumpy road conditions.

[0043] For example, referring to the table below, which records the changes in magnetic field strength before and after adding the annular ferrous metal heat-conducting component 200, three permanent magnet 300 samples were tested: Sample 1, Sample 2, and Sample 3. All permanent magnet 300 samples have the same dimensions. It should be understood that in each tested sample, the permanent magnet 300 has dimensions of 17mm * 2.5mm * 8.5mm, specifically: outer diameter 17mm, inner diameter 8.5mm, and thickness 2.5mm; the ferrous metal heat-conducting component 200 has dimensions of 19.5mm * 17.5mm * 8mm * 3.5mm, specifically: outer diameter 19.5mm, annular mounting groove 110 outer diameter 17.5mm, annular mounting groove 110 inner diameter 8mm, and an outer edge thickness of 3.5mm. As shown in the figure, after the addition of the ferrous metal heat-conducting component 200, the effective magnetic field strength of the permanent magnet 300 increased by 27.12%, which means that the attraction force of the wheel end temperature monitoring sensor on the axle is stronger.

[0044]

[0045] refer to Figure 5In some embodiments, a contact portion 240 is provided protruding from the center of the circular portion of the metal heat-conducting component 200 toward the mounting groove 110. The contact portion 240 protrudes from one side of the mounting groove 110 to contact the temperature sensing chip 420. In this way, only the area of ​​the temperature sensing chip 420 on the PCB board 410 contacts the metal heat-conducting component 200, which can prevent excessive heat transfer to the PCB board 410.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wheel end temperature monitoring sensor, characterized by, The device includes: a housing, on which a metal heat-conducting component and a permanent magnet are fixedly disposed, wherein the metal heat-conducting component protrudes at least partially from the surface of the housing to be in contact with the surface of the object being measured, and a temperature measuring module and a battery for powering the temperature measuring module are disposed inside the housing. The temperature measuring module includes a PCB board, a data processing module disposed on the PCB board, a temperature measuring chip, and a transmitting antenna, wherein the temperature measuring chip is in contact with the metal heat-conducting component.

2. The wheel end temperature monitoring sensor of claim 1, wherein: A mounting groove is provided on the opposite side of the side on which the metal heat-conducting component and the permanent magnet are disposed on the housing, and the temperature measuring module and the battery are sealed in the mounting groove.

3. The wheel end temperature monitoring sensor of claim 2, wherein: The mounting groove is filled with epoxy resin or polyurethane, and the epoxy resin is used to seal the temperature measuring module and the battery in the mounting groove.

4. The wheel end temperature monitoring sensor of claim 1, wherein: The metal heat-conducting component is made of iron.

5. The wheel end temperature monitoring sensor of claim 1, wherein: The metal heat-conducting component is fixedly mounted on the housing by injection molding.

6. The wheel end temperature monitoring sensor of claim 5, wherein: At least two flanges are provided on the outer peripheral wall of the metal heat conductor along its height direction around the circumference of the metal heat conductor, and a groove is formed between two adjacent flanges.

7. The wheel end temperature monitoring sensor of any one of claims 1, 4-6, wherein: An assembly groove is provided on the metal heat-conducting component, and the permanent magnet is fixedly connected to the assembly groove.

8. The wheel end temperature monitoring sensor of claim 7, wherein: The metal heat-conducting component is circular, and the assembly groove and the permanent magnet are both annular.

9. The wheel end temperature monitoring sensor of claim 8, wherein: A mounting groove is provided on the opposite side of the side of the housing where the metal heat-conducting component and the permanent magnet are located. The temperature measuring module and the battery are sealed in the mounting groove. A contact part is provided protruding from the center of the circular part of the metal heat-conducting component. The contact part protrudes from the side surface facing the mounting groove so as to be able to contact the temperature measuring chip.

10. The wheel end temperature monitoring sensor of claim 7, wherein: The permanent magnet and the metal heat-conducting component are fixedly connected by adhesive.

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