Split type wireless transmission sensor

Abstract

The application discloses a split type wireless transmission sensor, which comprises a probe, a connecting mechanism and a wireless transmission device, wherein the probe is used for collecting temperature or / and vibration impact signals, the connecting mechanism connects the probe and the wireless transmission device, and the wireless transmission device is used for power supply and wireless transmission of the temperature or / and vibration impact signals collected by the probe to an external device. The split type wireless transmission sensor provided by the application can realize signal transmission without laying a large number of cables, can install the probe at an axle box position to improve detection accuracy, can use a non-metal material shell of the wireless transmission device to realize wireless data transmission and wireless charging, and can ensure the reliability of internal devices by not arranging the axle box position of the wireless transmission device. In addition, the split type wireless transmission sensor can also realize different measurement requirements by replacing the connecting mechanism and the probe.

Description

Technical Field

[0001] This application relates to the field of sensor technology, and in particular to a split-type wireless transmission sensor. Background Technology

[0002] Sensors used for fault monitoring of the running gear of urban rail vehicles (including subways, suburban trains, etc.) generally use platinum resistance thermometers or thermocouples as temperature sensing elements, and / or vibration and shock sensitive devices. After measuring temperature and vibration and shock signals, they are transmitted to the on-board system via cables.

[0003] Existing sensors typically use wired transmission, transmitting power and signals via cables. Therefore, these sensors only contain vibration, shock, and temperature-sensitive circuitry, resulting in a simple structure and small size, but requiring extensive cabling. Wireless transmission sensors, on the other hand, need to integrate vibration, shock, and temperature sensitivity and data acquisition, energy storage and power supply, and wireless communication functions. This leads to a larger size, higher reliability requirements, and greater implementation challenges. Furthermore, wireless transmission sensors are directly mounted on the axle box, presenting issues with circuit board and battery vibration resistance. Moreover, sensors mounted on the axle box usually have a metal structure, which 4G / 5G / Wi-Fi signals cannot penetrate for data transmission. Additionally, the metal structure interferes with magnetic fields, preventing wireless charging of the battery. Finally, the larger size of wireless transmission sensors and the inability to install wireless transmission devices at the effective monitoring location of the sensor probe further complicate matters.

[0004] In summary, how to provide a wireless transmission sensor structure that can be installed in the axle box, enabling wireless data transmission and wireless charging, and ensuring the reliability of internal components, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention aims to solve at least one technical problem existing in the prior art and provide a split-type wireless transmission sensor.

[0006] The technical solution provided by this utility model is as follows: A split-type wireless transmission sensor includes a probe, a connecting mechanism, and a wireless transmission device. The probe is used to collect temperature and / or vibration and shock signals. The connecting mechanism connects the probe and the wireless transmission device. The wireless transmission device is used to supply power and transmit the temperature and / or vibration and shock signals collected by the probe to an external device via wireless transmission. The connecting mechanism includes a cable, through which the probe and the wireless transmission device are connected.

[0007] Preferably, the connection mechanism further includes a corrugated tube sleeved on the cable, and the two ends of the corrugated tube are fixedly connected to the probe and the wireless transmission device respectively through waterproof connectors.

[0008] Preferably, the wireless transmission device includes a device housing, a battery, and an antenna, wherein the battery and antenna are housed within an internal cavity of the device housing.

[0009] Preferably, the device housing includes a battery compartment, in which the battery and antenna are installed.

[0010] Preferably, the battery is placed inside the battery compartment after being wrapped with a cushioning material.

[0011] Preferably, the side wall of the battery compartment has a reserved antenna mounting slot, and the antenna is adhered to the antenna mounting slot.

[0012] Preferably, the device housing further includes a circuit board compartment, and the split-type wireless transmission sensor further includes a wireless charging mechanism connected to the battery for charging the battery, the wireless charging mechanism being installed in the circuit board compartment.

[0013] Preferably, the wireless charging mechanism includes a PCB board and a charging coil; the end wall of the board compartment is provided with a coil mounting groove, and the charging coil is mounted in the coil mounting groove; the board compartment is provided with a boss, and the PCB board is mounted on the boss; the PCB board is located on the side of the charging coil away from the end wall.

[0014] Preferably, the wireless charging mechanism further includes a magnet, and the end wall of the board compartment is provided with a magnet mounting groove, in which the magnet is embedded.

[0015] Preferably, the inner cavity of the battery compartment is filled with potting compound, and the inner wall of the battery compartment is provided with grooves to increase the contact area between the potting compound and the battery compartment; the inner cavity of the circuit board compartment is filled with potting compound.

[0016] Preferably, the battery compartment and the circuit board compartment are detachably fixed, and an O-ring is installed between the battery compartment and the circuit board compartment.

[0017] Preferably, the board compartment and battery compartment are made of non-metallic materials.

[0018] Compared to existing technologies, this utility model features a split-type wireless transmission sensor, comprising a probe and a wireless transmission device that are separately configured and connected by a connecting mechanism. This eliminates the need for extensive cable laying to transmit signals. Separating the probe and wireless transmission device allows the probe to be installed in the axle box location, improving detection accuracy. The wireless transmission device utilizes a non-metallic housing for wireless data transmission and wireless charging. The absence of a axle box location for the wireless transmission device ensures the reliability of internal components. Furthermore, different measurement needs can be met by replacing the connecting mechanism and the probe. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded perspective view of the split-type wireless transmission sensor according to an embodiment of the present invention; Figure 2 for Figure 1 A 3D view of the battery compartment in the split-type wireless transmission sensor shown. Figure 3 for Figure 2 A cross-sectional view of the battery compartment and its mating components shown; Figure 4 for Figure 1 A 3D view of the board compartment in the split-type wireless transmission sensor shown. Figure 5 for Figure 4 The diagram shows a cross-sectional view of the card slot and its mating components.

[0021] In the diagram, 1-probe, 2-corrugated pipe, 3-cable, 4-waterproof connector, 5-board compartment, 6-bolt, 7-O-ring, 8-charging coil, 9-magnet, 10-PCB board, 11-battery compartment, 12-battery, 13-battery buffer cotton, 14-antenna, 15-antenna mounting slot, 16-groove, 17-coil mounting slot, 18-magnet mounting slot, 19-boob. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0026] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0027] like Figures 1 to 5 As shown, this utility model embodiment provides a split-type wireless transmission sensor, which can be used for fault monitoring of the running gear (bearings, gears, treads) of urban rail vehicles, and of course can also be used for monitoring other parts of other products.

[0028] The split-type wireless transmission sensor includes a probe 1, a connecting mechanism, and a wireless transmission device.

[0029] Probe 1 is used to acquire temperature and / or vibration and shock signals. It is the component for acquiring temperature and / or vibration and shock signals and is equipped with temperature and / or vibration and shock signal sensitive devices. Depending on the application environment and customer requirements, different types of probes can be used, such as magnetic probes, quick-attach probes, threaded connection probes, etc. As a separate module, probe 1 can be designed with probes of different sizes and installation methods, ensuring that its wiring structure remains unchanged; these will not be described in detail here. Preferably, probe 1 has a metal shell to effectively protect its internal components and allows it to be installed in the shaft box position to improve detection accuracy.

[0030] The connecting mechanism is used to connect the probe 1 to the wireless transmission device. In this embodiment, the connecting mechanism includes a cable 3 and a corrugated tube 2 sleeved on the cable 3. Both ends of the cable 3 are welded to the probe 1 and the wireless transmission device, respectively, enabling a flexible connection between the probe 1 and the wireless transmission device. Both ends of the corrugated tube 2 are also fixedly connected to the probe 1 and the wireless transmission device via waterproof connectors 4. The waterproof connectors 4 tighten the corrugated tube 2, preventing it from falling off and preventing external water from entering the probe 1 and the wireless transmission device, thereby improving the level of protection.

[0031] The wireless transmission device is used to power and transmit the temperature and / or vibration / shock signals collected by probe 1 to an external device (such as an in-vehicle system) wirelessly. The wireless transmission device includes a device housing, a battery 12, an antenna 14, and a wireless charging mechanism. A cavity is formed inside the device housing, and the battery 12, antenna 14, and wireless charging mechanism are housed within the cavity.

[0032] In this embodiment, the device housing includes a battery compartment 11 made of non-metallic material and a circuit board compartment 5 made of non-metallic material. The battery compartment 11 and the circuit board compartment 5 are detachably fixed by bolts 6 (other methods may also be used), and an O-ring 7 is installed between the battery compartment 11 and the circuit board compartment 5 to improve waterproofing.

[0033] In this embodiment, the battery compartment 11 is a machined component, serving as the mounting part for the battery 12, antenna 14, and waterproof connector 4. It can be manufactured using a high-strength non-metallic material that is easy to process. The overall non-metallic material improves the transmission effect of the antenna signal, and its damping coefficient is greater than that of metallic materials, resulting in better vibration reduction. The battery 12 is wrapped with a cushioning material 13 (such as cushioning cotton) to significantly reduce the damage to the battery 12 caused by vibration. The antenna 14 is bonded to the antenna mounting slots 15 reserved on both sides of the battery compartment 11. After the battery 12 is wrapped with the cushioning material 13, it is placed inside the battery compartment 11; a high-viscosity, high-damping potting compound is used for potting and filling. The battery 12 and the cushioning material 13 are installed inside the battery compartment 11, relying on the potting compound for vibration reduction and fixation. The inner wall of the battery compartment 11 has grooves 16 to increase the contact between the potting compound and the battery compartment 11, improve the adhesion between the potting compound and the battery compartment 11, and enhance the reliability of the fixation.

[0034] In this embodiment, the wireless charging mechanism includes a PCB board 10, a charging coil 8, and a magnet 9, which are connected to the battery 12 for charging the battery 12 (by receiving power from an external wireless charging device, such as a wireless power bank). The wireless charging mechanism can employ existing wireless charging technology, which will not be elaborated upon here.

[0035] In this embodiment, the board compartment 5 is a machined component, serving as the mounting part for the PCB board 10, charging coil 8, and magnet 9. It is made of a high-strength non-metallic material that is easy to process. The overall non-metallic material solves the problem of interference energy transmission caused by the eddy current effect and magnetic field shielding of metallic materials. The charging coil 8 is mounted inside the board compartment 5, which is designed with a coil mounting slot 17 to ensure the uniformity of the charging coil 8's installation position. The board compartment 5 has a magnet mounting slot 18 for embedding and installing the magnet 9. During wireless charging, the magnet 9 can accurately position the external charging device to ensure maximum charging power. The board compartment 5 also has a boss 19 for mounting the PCB board 10. The boss 19 has an embedded nut, and the PCB board 10 is connected to the nut by screws and mounted on the boss 19. After the PCB board 10, charging coil 8, and magnet 9 are installed in the board compartment 5, a high-strength electronic potting compound is used for encapsulation, which prevents these devices from moving relative to each other in high-vibration environments, improving their reliability. The PCB board 10 is installed in parallel with the charging coil 8. The charging coil 8 is close to the end wall of the board compartment 5, and the magnet 9 is located around the charging coil 8, which makes the structure compact and the charging performance good.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A split-type wireless transmission sensor, characterized in that, The device includes a probe, a connecting mechanism, and a wireless transmission device. The probe is used to collect temperature and / or vibration and shock signals. The connecting mechanism connects the probe and the wireless transmission device. The wireless transmission device is used to supply power and transmit the temperature and / or vibration and shock signals collected by the probe to an external device via wireless transmission. The connecting mechanism includes a cable, through which the connection between the probe and the wireless transmission device is realized. The wireless transmission device includes a device housing, a battery, an antenna, and a wireless charging mechanism. The device housing forms a cavity inside, and the battery, the antenna, and the wireless charging mechanism are housed in the cavity. The wireless charging mechanism is connected to the battery for charging the battery; The device housing includes a battery compartment made of non-metallic material and a circuit board compartment made of non-metallic material.

2. The split-type wireless transmission sensor as described in claim 1, characterized in that, The connection mechanism also includes a corrugated tube sleeved on the cable, with both ends of the corrugated tube fixed to the probe and the wireless transmission device respectively through waterproof connectors.

3. The split-type wireless transmission sensor as described in claim 1, characterized in that, The battery and antenna are installed in the battery compartment.

4. The split-type wireless transmission sensor as described in claim 3, characterized in that, The battery is placed inside the battery compartment after being wrapped in cushioning material.

5. The split-type wireless transmission sensor as described in claim 4, characterized in that, The battery compartment sidewall has a reserved antenna mounting slot, and the antenna is glued into the antenna mounting slot.

6. The split-type wireless transmission sensor as described in any one of claims 3 to 5, characterized in that, The wireless charging mechanism is installed in the board compartment.

7. The split-type wireless transmission sensor as described in claim 6, characterized in that, The wireless charging mechanism includes a PCB board and a charging coil; the end wall of the board compartment is provided with a coil mounting groove, and the charging coil is mounted in the coil mounting groove; the board compartment is provided with a boss, and the PCB board is mounted on the boss; the PCB board is located on the side of the charging coil away from the end wall.

8. The split-type wireless transmission sensor as described in claim 7, characterized in that, The wireless charging mechanism also includes a magnet, and the end wall of the board compartment is provided with a magnet mounting groove, in which the magnet is embedded.

9. The split-type wireless transmission sensor as described in claim 8, characterized in that, The inner cavity of the battery compartment is filled with potting compound, and the inner wall of the battery compartment is provided with grooves to increase the contact area between the potting compound and the battery compartment; the inner cavity of the circuit board compartment is filled with potting compound.

10. The split-type wireless transmission sensor as described in claim 8, characterized in that, The battery compartment and the circuit board compartment are detachably fixed together, and an O-ring is installed between the battery compartment and the circuit board compartment.

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