A vehicle wheel hub temperature sensing connector

Abstract

The present invention discloses a vehicle wheel hub temperature sensing connector, which includes a laser detection contact, a fixed seat, a laser temperature sensing processor, a sensing signal transceiver, a crimp terminal and a transmission line; one end of the laser detection contact extends into the central hole of the vehicle wheel hub, and the other end of the laser detection contact is fixedly connected to the laser temperature sensing processor through the fixed seat. The sensing signal transceiver is arranged in the laser temperature sensing processor, and the laser temperature sensing processor is fixedly connected to the transmission line through a wiring terminal; the laser detection contact is electrically connected to the laser temperature sensing processor, the laser temperature sensing processor is electrically connected to the sensing signal transceiver, and the sensing signal transceiver is electrically connected to the transmission line through flexible circuits. All parts of the sensing connector are connected by flexible circuits, which is not easy to affect the data transmission stability due to the bumps during the high-speed movement of the vehicle, ensuring the accuracy and safety of the data acquisition and transmission process of the sensing connector. Moreover, the sensing connector has a simple structure, is easy to install and has stronger practicability.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle wheel hub temperature detection, and more particularly to a vehicle wheel hub temperature sensing connector. Background Art

[0002] At present, with the rapid development of the economy, the number of vehicles is increasing, and the issue of vehicle driving safety has also received more and more attention. The temperature-resistant sensor and control device that matches the vehicle is an important part of ensuring the safety of vehicle driving and the personal safety of drivers and passengers. During the driving of road and railway vehicles, a considerable number of various high-end supporting equipment for safety monitoring and detection are generally configured to effectively detect the safety warnings and safety self-control brought to the vehicle safety control system by the acceleration and deceleration of high-speed vehicles in operation, so as to ensure the safety of vehicles and drivers and passengers. Among them, the vehicle wheel hub brake control system is a widely used safety monitoring equipment, and the wheel hub detection sensor equipment is an important part of the system.

[0003] Traditional wheel hub detection sensor equipment is arranged in the control system with dual-wire or multi-core parallel connection. Due to the insufficient structure of the wheel hub detection sensor equipment, poor data transmission stability and weak anti-interference ability, it is affected by the high-speed movement and bumps of the vehicle, and transmission connection contact errors occasionally occur, giving the control system a perceptual illusion, thereby posing a safety hazard to the moving vehicle.

[0004] Therefore, how to provide a vehicle wheel hub temperature sensor connector with a simple structure and strong anti-interference ability is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0005] In view of this, the present invention provides a vehicle wheel hub temperature sensor connector, which solves the problems of the existing wheel hub detection sensor equipment having a simple structure, poor data transmission stability, and weak anti-interference ability through reasonable structural improvement.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A vehicle wheel hub temperature sensing connector, comprising: a laser detection contact, a fixing seat, a laser temperature sensing processor, a sensing signal transceiver, a crimping terminal and a transmission line;

[0008] One end of the laser detection contact extends into the central hole of the vehicle wheel hub, and the other end of the laser detection contact is fixedly connected to the laser temperature sensing processor through the fixing seat, the sensor signal transceiver is arranged in the laser temperature sensing processor, and the laser temperature sensing processor is fixedly connected to the transmission line through the wiring terminal;

[0009] The laser detection contact is electrically connected to the laser temperature sensing processor through a flexible circuit. The laser temperature sensing processor is electrically connected to the sensing signal transceiver through a flexible circuit. The sensing signal transceiver is electrically connected to the transmission line through a flexible circuit.

[0010] The beneficial effects of the present invention are as follows: All parts of the vehicle wheel hub temperature sensing connector are connected by flexible circuits. It is not easy to affect the stability of data transmission due to the bumps during the high-speed movement of the vehicle, ensuring the accuracy and safety of the data acquisition and transmission process of the sensing connector. Moreover, the sensing connector has a simple structure, is easy to install, and has stronger practicability.

[0011] Further, the laser temperature sensing processor includes a housing and a DS18B20U single-wire digital temperature sensor encapsulated in the housing. The DS18B20U single-wire digital temperature sensor is electrically connected to the sensing signal transceiver.

[0012] Further, the DS18B20U single-wire digital temperature sensor includes a 64-bit laser ROM single-wire interface, a high-speed cache, a TH flip-flop, a TL flip-flop, and a data memory;

[0013] The TH flip-flop, the TL flip-flop, and the data memory are all electrically connected to the high-speed cache. The data memory is electrically connected to the 64-bit laser ROM single-wire interface. The 64-bit laser ROM single-wire interface is electrically connected to the sensing signal transceiver.

[0014] The DS18B20U adopted in the present invention is a new type of single-bus digital laser temperature sensor chip. It has a unique single-bus interface with metal shielding, and multiple sensor processors can be connected to one line; it avoids the disadvantages of poor reliability of the original traditional double-parallel or multi-parallel transmission, thus overcoming the shortcomings when the original traditional analog temperature sensing connector is connected to a two-wire or multi-wire microcomputer interface. Due to its characteristics of high temperature measurement accuracy, strong anti-interference ability, low cost, and small size, it is especially suitable for forming a multi-point temperature measurement and control system with a microprocessor chip, and is more suitable for use in the vehicle wheel hub temperature sensing connector of the present invention.

[0015] Further, the surface of the 64-bit laser ROM single-wire interface is coated with a silver plating layer. The setting of the silver plating layer increases the antioxidant ability of the signal components, ensuring more excellent signal transmission.

[0016] Further, the transmission line sequentially includes a conductor, an insulating layer, a metal shielding layer, and a protective sheath layer from the inside to the outside. The conductor is electrically connected to the sensing signal transceiver. The insulating layer, the metal shielding layer, and the protective sheath layer are sequentially sleeved outside the conductor.

[0017] Further, the metal shielding layer is woven from tinned soft copper wires. In the present invention, the metal shielding layer is woven from tinned soft copper wires by a weaving technique of more than 85%, and is woven outside the insulating layer to fully shield external electromagnetic interference, and also serves as a single-wire grounding transmission loop.

[0018] Further, the protective sheath layer is made of flexible TPU material. Since the TPU material is soft, resistant to high temperature, low temperature, waterproof, wear-resistant, oil-resistant, acid and alkali-resistant, compressive, heat-aging resistant, long-lived, and has a high safety factor, it ensures that the entire insulated wire has better physical and mechanical properties and electrical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 FIG.

[0021] Figure 2 FIG.

[0022] Figure 3 FIG.

[0023] Figure 4 FIG.

[0024] Figure 5 FIG.

[0025] Figure 6 FIG. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0027] See the appendix Figure 1 、 Figure 2 and Figure 3, an embodiment of the present invention discloses a vehicle wheel hub temperature sensing connector, comprising: a laser detection contact 3, a fixed seat 5, a laser temperature sensing processor 6, a sensing signal transceiver 4, a crimp terminal 7, and a transmission line;

[0028] One end of the laser detection contact 3 extends into the central hole of the vehicle wheel hub 2, as Figure 1 and Figure 6 shown, and specifically can be set at the position of the detection point 1. The other end of the laser detection contact 3 is fixedly connected to the laser temperature sensing processor 6 through a fixed seat 5 that is convenient for disassembly and installation. The sensing signal transceiver 4 is arranged inside the laser temperature sensing processor 6, and the laser temperature sensing processor 6 is fixedly connected to the transmission line through a wiring terminal 7;

[0029] The laser detection contact 3 is electrically connected to the laser temperature sensing processor 6 through a flexible circuit. The laser temperature sensing processor 6 is electrically connected to the sensing signal transceiver 4 through a flexible circuit. The sensing signal transceiver 4 is electrically connected to the transmission line through a flexible circuit.

[0030] Specifically, referring to the appendix Figure 2 and Figure 4 , the laser temperature sensing processor 6 includes a housing 61 and a DS18B20U single-wire digital temperature sensor 62 encapsulated in the housing 61. The DS18B20U single-wire digital temperature sensor 62 is encapsulated at the inner end of an SS304 resistor in the housing 61 and is connected to the front end of the sensing signal transceiver 4. It is encapsulated with a high-temperature-resistant resin. The sensing signal transceiver 4 is connected to a single shielded transmission line to form a closed-loop signal unit.

[0031] Specifically, referring to the appendix Figure 4 , the DS18B20U single-wire digital temperature sensor 62 is a high-sensitivity sensing module composed of devices such as a 64-bit laser ROM single-wire interface, a high-speed cache, a TH trigger, a TL trigger, a temperature sensing element, and a data memory. Among them, the 64-bit laser ROM single-wire interface is used to receive the signal detected by the laser detection contact 3 and transmit the signal to the sensing signal transceiver 4. The sensing signal transceiver 4 transmits the temperature signal to the vehicle control system through the transmission line. The data memory and the high-speed cache are used to store intermediate data. The TH trigger and the TL trigger are used to set the upper temperature limit value and the lower temperature limit value.

[0032] More preferably, the surface of the 64-bit laser ROM single-wire interface is coated with a silver plating layer. After the silver plating processing, the antioxidant ability of the signal components is increased, ensuring more excellent signal transmission.

[0033] In this embodiment, both the laser detection contact 3 and the laser temperature sensing processor 6 are installed on the fixed seat 5 by means of threaded connection. The installation process is more convenient, and the device is convenient to disassemble during later maintenance.

[0034] Specifically, refer to the attached Figure 5 . The transmission line sequentially includes a conductor 11, an insulating layer 10, a metal shielding layer 9, and a protective sheath layer 8 from the inside to the outside. The conductor 11 is electrically connected to the sensing signal transceiver 4, and the insulating layer 10, the metal shielding layer 9, and the protective sheath layer 8 are sequentially sleeved outside the conductor 11.

[0035] In this embodiment, first, the insulating layer of a single insulated wire is removed, the conductor 11 is inserted into the connection sleeve of the crimp terminal 7, and it is compacted by a special crimping machine. Then, it is encapsulated with a heat-resistant resin, and a heat-shrinkable tube is sleeved outside for sealing. The external metal shielding layer 9 is connected to the shell of the laser temperature sensor processor 6, so that the laser detection contact, the laser temperature sensor processor, the sensing signal transceiver, and the transmission line form a complete thermal closed-loop signal detection unit. This thermal closed-loop signal detection unit is fixed at the safe parts between the vehicle wheel hub and the vehicle body and connected to the vehicle control system center to realize the online safety monitoring of the vehicle wheel hub temperature.

[0036] More preferably, the metal shielding layer 9 is woven from tinned soft copper wires. In this embodiment, the tinned soft copper wires are woven outside the insulating layer 10 by a weaving technology of more than 85% to form the metal shielding layer 9. It fully shields external electromagnetic interference and also serves as a single-wire grounding transmission loop.

[0037] More preferably, the protective sheath layer 8 is made of flexible TPU material. The flexible TPU (Thermoplastic polyurethane elastomer rubber) material can ensure that the whole sensing connector has better physical and mechanical properties and electrical properties.

[0038] In summary, compared with the prior art, the vehicle wheel hub temperature sensing connector disclosed in the embodiment of the present invention has the following advantages:

[0039] This sensing connector is mainly used to collect data on the wheel hub temperature of road vehicles and high-speed rail vehicles in a high-speed running state, transmit it to the vehicle safety control system for data analysis and processing, and give early warning control in a timely manner, so as to ensure the safety of the passengers and the vehicle;

[0040] Because components such as the laser detection contact, the laser temperature sensor processor, and the sensing signal transceiver all adopt silver product soft connections, it ensures the accuracy and safety of the sensing connector, and the circuit connection is soft, waterproof, wear-resistant, oil-resistant, acid and alkali-resistant, pressure-resistant, anti-aging, resistant to large current overload, has a long service life, and a high safety factor;

[0041] It effectively avoids the adverse factors brought about by the influence of the length and connection connectors of the original two traditional sensing wires. This sensing connector can be widely applied to the supporting systems of wheels of various road vehicles and rail transit vehicles to monitor the running safety of the wheels of various vehicles. The sensing connector has a simple structure, is convenient and fast to install, and has the characteristics of high temperature measurement accuracy, strong anti-interference ability, low cost, and small volume. It is suitable for forming a multi-point temperature measurement and control system with a microprocessing chip to ensure the running safety of vehicles.

[0042] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle wheel hub temperature sensing connector, characterized in that, it includes: a laser detection contact (3), a fixed seat (5), a laser temperature sensing processor (6), a sensing signal transceiver (4), a crimp terminal (7) and a transmission line; One end of the laser detection contact (3) extends into the central hole of the vehicle wheel hub (2), and the other end of the laser detection contact (3) is fixedly connected to the laser temperature sensing processor (6) through the fixed seat (5), and the laser detection contact (3) and the laser temperature sensing processor (6) are threadedly connected to the fixed seat (5), the sensing signal transceiver (4) is arranged in the laser temperature sensing processor (6), and the laser temperature sensing processor (6) is fixedly connected to the transmission line through the crimp terminal (7); The laser detection contact (3) is electrically connected to the laser temperature sensing processor (6) through a flexible circuit, the laser temperature sensing processor (6) is electrically connected to the sensing signal transceiver (4) through a flexible circuit, and the sensing signal transceiver (4) is electrically connected to the transmission line through a flexible circuit; The laser temperature sensing processor (6) includes a housing (61) and a DS18B20U single-wire digital temperature sensor (62) encapsulated in the housing (61); wherein, the DS18B20U single-wire digital temperature sensor (62) is encapsulated in the inner end of the SS304 resistor in the housing (61) and is connected to the front end of the sensing signal transceiver (4); The encapsulation uses a high-temperature resistant resin material, and the sensing signal transceiver (4) is connected to a single shielded transmission line to form a closed-loop signal unit; The transmission line sequentially includes a conductor (11), an insulating layer (10), a metal shielding layer (9) and a protective sleeve layer (8) from the inside to the outside. The conductor (11) is electrically connected to the sensing signal transceiver (4), and the insulating layer (10), the metal shielding layer (9) and the protective sleeve layer (8) are sequentially sleeved on the outside of the conductor (11); It also includes: removing the insulating layer (10) and inserting the conductor (11) into the connection sleeve of the crimp terminal (7), compacting it with a special crimping machine, encapsulating it with a temperature-resistant resin and sleeving it with a heat shrink tube for sealing; the metal shielding layer (9) is connected to the housing of the laser temperature sensing processor (6).

2. A vehicle wheel hub temperature sensing connector according to claim 1, characterized in that, The DS18B20U single-wire digital temperature sensor (62) includes a 64-bit laser ROM single-wire interface, a high-speed cache, a TH flip-flop, a TL flip-flop and a data memory; The TH flip-flop, the TL flip-flop and the data memory are all electrically connected to the high-speed cache, the data memory is electrically connected to the 64-bit laser ROM single-wire interface, and the 64-bit laser ROM single-wire interface is electrically connected to the sensing signal transceiver (4).

3. A vehicle wheel hub temperature sensing connector according to claim 2, characterized in that, The surface of the 64-bit laser ROM single-wire interface is coated with a silver plating layer.

4. A vehicle wheel hub temperature sensing connector according to claim 1, It is characterized in that the metal shielding layer (9) is woven from tinned soft copper wires 5. A vehicle wheel hub temperature sensing connector according to claim 1 It is characterized in that the protective sleeve layer (8) is made of flexible TPU material

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