Three-axis vibration temperature composite sensor
By employing a double-layer shielded housing design with internal and external insulation in the sensor, the problem of electromagnetic signal interference on rail vehicles is solved, enabling highly reliable monitoring of vehicle vibration and temperature, and possessing high voltage resistance and electromagnetic signal anti-interference capabilities.
Patent Information
- Application Number
- CN202520024108.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing vibration and temperature composite sensors are subject to electromagnetic interference on rail vehicles, resulting in poor vibration and temperature detection performance.
It adopts a double-layer shielded shell design with mutual insulation between the inner and outer shells, including an inner shielded shell and an insulating shell, to form a double-layer shielding effect to resist electromagnetic signal interference, and achieves high withstand voltage and electromagnetic interference protection through a surge protection circuit module.
It achieves highly reliable vibration and temperature signal detection for rail vehicles, and can monitor vibration signals and bearing temperature in real time during track changes, steering, forward movement and vertical gravity. It also has high pressure resistance and electromagnetic signal anti-interference capabilities.
Smart Images
Figure CN223596993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor technology, and in particular to a triaxial vibration-temperature composite sensor. Background Technology
[0002] In related technologies, vibration-temperature composite sensors can simultaneously monitor temperature and vibration signals, and are therefore widely used in rail vehicles. Existing sensors for monitoring the vibration status of gears, bearings, and shafts in rail vehicle axle boxes typically place the triaxial vibration core directly inside the housing. However, due to the complex equipment of railway vehicles, the supporting high-voltage motor equipment, and electromagnetic signal interference from internal circuits, the vibration-temperature composite sensors have poor performance in detecting vibration signals and housing temperature in the three directions of vehicle track change / steering, forward movement, and vertical direction of vehicle gravity. Utility Model Content
[0003] This invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, one objective of this invention is to provide a triaxial vibration-temperature composite sensor that employs a double-layer shielding effect with mutually insulated inner and outer shells to achieve high voltage resistance, surge protection, and electromagnetic signal interference immunity.
[0004] To achieve the above objectives, the first aspect of this utility model provides a triaxial vibration-temperature composite sensor, comprising: a triaxial vibration core; an inner shielding shell, wherein the triaxial vibration core is disposed within the inner shielding shell to form a vibration core assembly; and an insulating shell, wherein the vibration core assembly is disposed within the insulating shell and, together with a surge protection circuit module, is placed within an outer shielding shell; thereby, a double-layer shielding effect is achieved by using shells that are mutually insulated from each other, thereby achieving high voltage resistance, surge protection, and electromagnetic signal interference immunity.
[0005] In addition, the triaxial vibration-temperature composite sensor proposed in the above embodiments of this utility model may also have the following additional technical features:
[0006] Optionally, the triaxial vibrating core includes an X-axis vibrating core, a Y-axis vibrating core, and a Z-axis vibrating core; the inner shielding shell includes a first inner shielding shell and a second inner shielding shell; and the insulating shell includes a first insulating shell and a second insulating shell. The X-axis vibrating core and the Y-axis vibrating core are disposed within the first inner shielding shell to form a first vibrating core assembly; the first vibrating core assembly is disposed within the first insulating shell; the Z-axis vibrating core is disposed within the second inner shielding shell to form a second vibrating core assembly; and the second vibrating core assembly is disposed within the second insulating shell.
[0007] Optionally, the triaxial vibration-temperature composite sensor further includes a temperature component, which includes a temperature probe and a temperature chip, wherein the temperature chip is disposed within the temperature probe, and the temperature probe is connected to the outer shielding shell.
[0008] Optionally, the triaxial vibration-temperature composite sensor further includes: an angle adapter, one end of which is connected to the outer shielding shell; a wire holder, one end of which is connected to the other end of the angle adapter; a cable sheath, one end of which is connected to the other end of the wire holder, and a shielded cable is disposed inside the cable sheath; and a connector, which is connected to the other end of the cable sheath.
[0009] Optionally, the lead-out signal line of the triaxial vibration core is connected to the surge protection circuit module and then leads out an output vibration signal line, which is connected to the core wire of the shielded cable.
[0010] Optionally, the lead-out signal line of the temperature chip is connected to the core wire of the shielded cable through the outer shielding shell.
[0011] Optionally, the triaxial vibration-temperature composite sensor is installed by mounting screws penetrating the outer shielding housing. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the triaxial vibration-temperature composite sensor according to an embodiment of the present invention;
[0013] Figure 2 This is a cross-sectional structural diagram of the triaxial vibration-temperature composite sensor according to an embodiment of the present invention;
[0014] Figure 3 This is an exploded structural diagram of the triaxial vibration-temperature composite sensor according to an embodiment of the present invention.
[0015] Label Explanation
[0016] Triaxial vibration core 10, X-axis vibration core 101, Y-axis vibration core 102, Z-axis vibration core 103;
[0017] Inner shielding shell 11, first inner shielding shell 110, second inner shielding shell 111;
[0018] Insulating housing 12, first insulating housing 120, second insulating housing 121;
[0019] Surge protection circuit module 13;
[0020] Outer shielding shell 14;
[0021] Temperature component 15, temperature probe 150, temperature chip 151;
[0022] Angle adapter 16;
[0023] Wire mount 17;
[0024] Cable sheath 18, shielded cable 181;
[0025] Connector 19;
[0026] Mounting screw 20. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0028] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0030] like Figure 1-3 As shown, the triaxial vibration-temperature composite sensor of this utility model includes a triaxial vibration core 10, an inner shielding shell 11, an insulating shell 12, a surge protection circuit module 13, and an outer shielding shell 14.
[0031] The triaxial vibrating core 10 is disposed within the inner shielding shell 11 to form a vibrating core assembly; the vibrating core assembly is disposed within the insulating shell 12 and together with the surge protection circuit module 13 is placed within the outer shielding shell 14.
[0032] It should be noted that the triaxial vibration core 10 includes an IEPE circuit board and module core components.
[0033] In other words, the triaxial vibration core 10 of the triaxial temperature composite sensor adopts two layers of sealed metal shells, which are mutually insulated to form a shielding effect. The outer shielding shell 14 is the product shell and can be directly installed in contact with the vehicle axle box shell (equivalent to grounding and conduction), which can effectively release external electromagnetic interference signals. The inner shielding shell 11 is the shielding body for the module core component and the IEPE circuit board (signal conversion and amplification), which can effectively shield the signals generated by the module core component and the circuit conversion signals from external residual electromagnetic noise interference.
[0034] As one embodiment, the triaxial vibrating core 10 includes an X-axis vibrating core 101, a Y-axis vibrating core 102, and a Z-axis vibrating core 103. The inner shielding shell 11 includes a first inner shielding shell 110 and a second inner shielding shell 111. The insulating shell 12 includes a first insulating shell 120 and a second insulating shell 121. The X-axis vibrating core 101 and the Y-axis vibrating core 102 are disposed within the first inner shielding shell 110 to form a first vibrating core assembly. The first vibrating core assembly is disposed within the first insulating shell 120. The Z-axis vibrating core 103 is disposed within the second inner shielding shell 111 to form a second vibrating core assembly. The second vibrating core assembly is disposed within the second insulating shell 121.
[0035] In other words, the triaxial vibration core 10 includes a dual-axis core module and a single-axis core module. The triaxial vibration-temperature composite sensor realizes the detection of vibration signals in three directions: vehicle track change / steering, forward movement, and vertical direction of vehicle gravity through the triaxial vibration core 10.
[0036] As an example, the triaxial vibration-temperature composite sensor also includes a temperature component 15, which includes a temperature probe 150 and a temperature chip 151. The temperature chip 151 is disposed inside the temperature probe 150, and the temperature probe 150 is connected to the outer shielding shell 14.
[0037] It should be noted that the triaxial vibration-temperature composite sensor detects the temperature of the chamber through the temperature component 15.
[0038] In other words, the triaxial vibration and temperature composite sensor can solve the problem of electromagnetic signal anti-interference of complex equipment and supporting high-voltage motor equipment in railway vehicles. The built-in triaxial vibration core 10 and temperature component 15 realize the real-time detection of vibration signals and bearing temperature signals in three directions: vehicle track change / steering, forward movement, and vertical direction of vehicle gravity during vehicle operation. It has the characteristics of high reliability for monitoring the health status of vehicle operation.
[0039] As one embodiment, the triaxial vibration-temperature composite sensor also includes an angle adapter 16, a wire holder 17, a cable sheath 18, and a connector 19; wherein, one end of the angle adapter 16 is connected to the outer shielding shell 14; one end of the wire holder 17 is connected to the other end of the angle adapter 16; one end of the cable sheath 18 is connected to the other end of the wire holder 17, and a shielded cable 181 is provided inside the cable sheath 18; the connector 19 is connected to the other end of the cable sheath 18.
[0040] As an example, the lead-out signal line of the triaxial vibration core 10 is connected to the surge protection circuit module 13 and then leads out an output vibration signal line, which is connected to the core wire of the shielded cable 181.
[0041] As an example, the lead signal line of the temperature chip 151 is connected to the core wire of the shielded cable 181 through the outer shielding shell 14.
[0042] It should be noted that the triaxial vibration-temperature composite sensor adopts a 125° outgoing cable design to avoid interference from the external structure of the vehicle axle box and facilitate the installation and wiring of the sensor probe. The triaxial vibration core 10 adopts an insulated base and an insulated installation design with the outer shell, achieving a withstand voltage level of over 4000Vac. The outer shell is made of stainless steel, which can meet the long-term application requirements of railway vehicle operation conditions. The overall connection of the shell adopts laser continuous welding for overall sealing, achieving IP68 level or higher protection. The internal triaxial vibration design consists of a dual-axis core module and a single-axis core module. Finally, a composite temperature platinum sensing element is used to achieve triaxial vibration-temperature composite. All internal core signal outputs are connected to the surge protection circuit module loop and connected to the external low-smoke halogen-free shielded cable with a connector to complete the signal connection, realizing high-voltage surge protection for the internal core and circuit loop.
[0043] As one example, the triaxial vibration-temperature composite sensor is installed by mounting screws 20 through the outer shielding housing 14.
[0044] The core module of the triaxial vibrating core 10 is assembled by pressing and securing piezoelectric ceramics and a mass block together with an outer metal ring. The IEPE circuit board and the core module are both housed within the inner shielding shell 11. The upper and lower parts of the shielding shell 11 are sealed by laser welding to form the vibrating core assembly. The vibrating core assembly and the insulating shell 12 are glued together, and then the entire assembly is glued to the outer shielding shell 14. After insulation protection, the temperature chip 151 leads out a signal line placed inside the cavity of the outer shielding shell 14. The signal line from the triaxial vibrating core is connected to a surge protector. The circuit module 13 leads out the output vibration signal line through the surge protection circuit module 13. The vibration signal line and temperature signal line converge in the cavity of the outer shielding shell 14 and are welded one by one to the core wire of the shielded cable 181. The end of the shielded cable 181 is connected to the corresponding PIN of the connector 19 by crimping to form a complete vibration and temperature signal circuit. The cable sheath 18 is fixed to the probe side fixing seat 17 and the connector 19 side by crimping ring. The fixing seat 17 and the 125° angle adapter 16 are sealed and fixed to the outer shielding shell 14 by laser welding.
[0045] In summary, the triaxial vibration-temperature composite sensor according to this utility model embodiment achieves a 10MPa pressure resistance protection design. The sensor body has a built-in vibration-sensitive element, and the overall structure is mini and compact, which can meet the installation requirements in narrow spaces and provide real-time feedback of vibration acceleration signals. The housing is made of 316L stainless steel with passivation process to solve the problem of long-term use in deep water (high water pressure) conditions in rail applications. The vibration-sensitive element and signal output adopt a multi-layer shielding design with different functions to solve the electromagnetic signal anti-interference problem of complex equipment on ships and supporting hydrophone equipment.
[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0047] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A triaxial vibration-temperature composite sensor, characterized in that, include: Triaxial vibrating core; An inner shielding shell is provided, and the triaxial vibration core is disposed within the inner shielding shell to form a vibration core assembly; An insulating housing is provided, and the vibrating core assembly is disposed within the insulating housing and placed together with the surge protection circuit module within the outer shielding housing.
2. The triaxial vibration-temperature composite sensor as described in claim 1, characterized in that, The triaxial vibration core includes an X-axis vibration core, a Y-axis vibration core, and a Z-axis vibration core; the inner shielding shell includes a first inner shielding shell and a second inner shielding shell; and the insulating shell includes a first insulating shell and a second insulating shell. The X-axis vibrating core and the Y-axis vibrating core are disposed within the first inner shielding shell to form a first vibrating core assembly; the first vibrating core assembly is disposed within the first insulating shell; the Z-axis vibrating core is disposed within the second inner shielding shell to form a second vibrating core assembly; and the second vibrating core assembly is disposed within the second insulating shell.
3. The triaxial vibration-temperature composite sensor as described in claim 1, characterized in that, Also includes: A temperature component, comprising a temperature probe and a temperature chip, wherein the temperature chip is disposed within the temperature probe and the temperature probe is connected to the outer shielding shell.
4. The triaxial vibration-temperature composite sensor as described in claim 3, characterized in that, Also includes: An angle adapter, one end of which is connected to the outer shielding shell; A wire fixing base, one end of which is connected to the other end of the angle adapter; A cable sheath, one end of which is connected to the other end of the cable holder, and a shielded cable is provided inside the cable sheath; A connector that is connected to the other end of the cable sheath.
5. The triaxial vibration-temperature composite sensor as described in claim 4, characterized in that, The signal lead of the triaxial vibrating core is connected to the surge protection circuit module, and then the output vibration signal line is led out. The output vibration signal line is connected to the core wire of the shielded cable.
6. The triaxial vibration-temperature composite sensor as described in claim 4, characterized in that, The lead-out signal line of the temperature chip is connected to the core wire of the shielded cable through the outer shielding shell.
7. The triaxial vibration-temperature composite sensor as described in claim 1, characterized in that, The triaxial vibration-temperature composite sensor is installed by mounting screws that penetrate the outer shielding housing.