Sensor module

Abstract

The embodiment of the invention provides a sensor module, which comprises a fixed seat and a plurality of pressure sensors, and is characterized in that the fixed seat is provided with a plurality of installation spaces which are not communicated with each other, and the installation spaces penetrate through the fixed seat along a first direction; each pressure sensor is detachably arranged in each mounting space in a penetrating manner; each pressure sensor comprises a pressure detection assembly and a conductive output assembly, one end of the conductive output assembly is electrically connected with the pressure detection assembly, and the other end of the conductive output assembly protrudes out of the first end of the fixing base in the first direction and is exposed out of the outer surface of the sensor module so that the pressure sensors can be electrically connected with external equipment. According to the sensor module provided by the invention, the pressure distribution of a plurality of measurement points can be measured at the same time or respectively, relatively comprehensive pressure information is provided, and the measurement precision and the measurement stability are high. A user can independently adjust or replace the pressure sensor of each point position according to the measurement requirement, the whole sensor module does not need to be operated, and the use flexibility is high.

Description

Technical Field

[0001] This application relates to the technical field of sensors, and in particular, to a sensor module. Background Art

[0002] In the related art, the detection range of a single pressure sensor is limited, and it is vulnerable to external environmental interference, with limited accuracy and stability, making it difficult to meet complex application scenarios. Summary of the Invention

[0003] In view of this, embodiments of this application are expected to provide a sensor module that can meet the measurement requirements of multiple measurement points. At the same time, it has high flexibility and can adjust or replace a single pressure sensor according to different needs.

[0004] Embodiments of this application provide a sensor module, including:

[0005] A fixed seat is provided with a plurality of non-communicating installation spaces, and the installation spaces penetrate the fixed seat along a first direction;

[0006] A plurality of pressure sensors, each of which is detachably inserted into each of the installation spaces;

[0007] Wherein, each of the pressure sensors respectively includes a pressure detection component and a conductive output component. The pressure detection component is disposed in the installation space. One end of the conductive output component is electrically connected to the pressure detection component, and the other end of the conductive output component protrudes from the first end of the fixed seat along the first direction and is exposed on the outer surface of the sensor module for realizing the electrical connection between each of the pressure sensors and an external device.

[0008] In some embodiments, the pressure detection component includes at least one pressure element, and the conductive output component includes a conductive substrate and a wire harness that are connected to each other. The conductive substrate is disposed in the installation space and is electrically connected to the pressure element, and a part of the wire harness protrudes from the first end of the fixed seat along the first direction.

[0009] In some embodiments, the number of the pressure elements is multiple, and the multiple pressure elements are stacked along the first direction. The polarities of the opposite side surfaces of any two adjacent pressure elements are the same, and the conductive substrate is clamped between two of the adjacent pressure elements.

[0010] In some embodiments, the pressure element has a hollow region, a part of the conductive substrate is exposed through the hollow region, one end of the wire harness extends into the installation space and is connected to the conductive substrate through the hollow region, and the wire harness does not contact the pressure detection component.

[0011] In some embodiments, the pressure sensor further includes a contact. One end of the contact extends into the installation space and abuts against the pressure detection component, and the other end protrudes from the second end of the fixed seat along the first direction and is exposed on the outer surface of the sensor module. The contact is used to transfer pressure to the pressure detection component.

[0012] In some embodiments, at least a part of the contact located in the installation space abuts against the side wall of the installation space. The contact and the fixed seat are metal parts. The pressure detection component and the conductive output component form a first electrode, and the pressure detection component, the contact, and the fixed seat form a second electrode;

[0013] And / or, a side wall of the installation space away from the conductive output component protrudes inward to form a limiting wall, and a part of the contact abuts against the limiting wall.

[0014] In some embodiments, the fixed seat is of an integral structure; and / or, the pressure sensor further includes an insulating ring sleeved on the outer periphery of the pressure detection component.

[0015] In some embodiments, the pressure sensor further includes a positioning member disposed in the installation space. The positioning member covers the outer periphery of the pressure detection component. The positioning member has a positioning space, and the conductive output component passes through the positioning space.

[0016] In some embodiments, the pressure sensor further includes an elastic member and a gasket. The elastic member and the gasket are disposed in the installation space. Two ends of the elastic member respectively abut against the positioning member and the gasket, and the positioning member can keep abutting against the pressure detection component under the elastic force of the elastic member.

[0017] In some embodiments, the sensor module further includes a retaining ring. A side wall of the installation space away from the pressure detection component is recessed outward to form a retaining groove. The second end of the retaining ring along the first direction has a first end face. A part of the first end face abuts against the gasket, and another part abuts against the groove wall of the retaining groove.

[0018] The sensor module provided by the embodiment of the present application, with the arrangement of multiple pressure sensors, can measure the pressure distribution at multiple measurement points simultaneously or separately, providing relatively comprehensive pressure information, having high measurement accuracy and measurement stability, and being convenient for adapting to complex application scenarios. The multiple pressure sensors are not connected to each other and can be respectively connected to external devices through the exposed conductive output components. Users can individually adjust or replace the pressure sensors at each point according to measurement requirements without operating on the entire sensor module. The sensor module has high flexibility in use and is also convenient for upgrading and expanding the sensor module. In addition, when a fault occurs, the specific pressure sensor can be quickly located and replaced without replacing the entire sensor module, reducing the maintenance cost and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a sensor module according to an embodiment of the present application;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the structure shown in another perspective;

[0021] Figure 3 is Figure 2 a cross-sectional view of the structure shown along the A-A direction;

[0022] Figure 4 is Figure 1 an exploded schematic diagram of the structure shown;

[0023] Figure 5 is Figure 1 a schematic partial structural diagram of the sensor module shown;

[0024] Figure 6 is a schematic structural diagram of a conductive output component according to an embodiment of the present application.

[0025] DESCRIPTION OF REFERENCE NUMERALS

[0026] 100 - sensor module;

[0027] 10 - fixing base; 10a - installation space; 10c - limiting wall; 10d - anti - detachment groove;

[0028] 20 - pressure sensor; 21 - pressure detection component; 211 - pressure element; 211a - hollow area; 22 - conductive output component; 221 - conductive substrate; 222 - wire harness; 23 - contact; 24 - insulating ring; 25 - positioning member; 25a - positioning space; 26 - elastic member; 27 - gasket;

[0029] 40 - retaining ring; 40a - first end face. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In the various specific technical features described in the specific embodiments, without conflict, they can be combined in any suitable manner. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, various possible combination methods of the specific technical features in the present invention will not be described separately.

[0032] In the following description, the terms "first / second / ..." involved are only used to distinguish different objects and do not indicate that there are the same or related relationships between the objects. It should be understood that the orientation descriptions "above", "below", "outside", and "inside" involved are all in the orientation in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagrams, which may or may not be the left and right directions in the normal use state.

[0033] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. "Plurality" means greater than or equal to two.

[0034] An embodiment of the present application provides a sensor module 100.

[0035] Please refer to Figures 1 to 6 , the sensor module 100 includes a fixed seat 10 and a plurality of pressure sensors 20.

[0036] The fixed seat 10 is provided with a plurality of non-communicating installation spaces 10a, and the installation spaces 10a penetrate through the fixed seat 10 along the first direction. Each pressure sensor 20 is detachably inserted into each installation space 10a.

[0037] Wherein, each pressure sensor 20 respectively includes a pressure detection component 21 and a conductive output component 22. The pressure detection component 21 is arranged in the installation space 10a. One end of the conductive output component 22 is electrically connected to the pressure detection component 21, and the other end of the conductive output component 22 protrudes from the first end of the fixed seat 10 along the first direction and is exposed on the outer surface of the sensor module 100 for realizing the electrical connection between each pressure sensor 20 and an external device.

[0038] A plurality of non - communicating installation spaces 10a means that the installation spaces 10a are arranged at intervals and have no overlapping or shared parts. The installation spaces 10a penetrate the fixing base 10 along the first direction, that is, the installation spaces 10a are through - spaces, and both sides of the installation spaces 10a along the first direction are open.

[0039] The plurality of installation spaces 10a can be arranged linearly, in a matrix, circularly, spirally, irregularly, etc., without limitation here. The plurality of pressure sensors 20 can be arranged on a surface in a planar form, that is, regardless of the arrangement mode of the installation spaces 10a, the end faces of the first ends of the pressure sensors 20 along the first direction are flush, and the end faces of the second ends of the pressure sensors 20 along the first direction are flush.

[0040] The plurality of pressure sensors 20 can be of the same type of pressure sensors 20 or different types of pressure sensors 20. The plurality of pressure sensors 20 can include one or more of piezoresistive pressure sensors, capacitive pressure sensors, piezoelectric pressure sensors, without limitation here.

[0041] Each pressure sensor 20 is detachably inserted into each installation space 10a, which means that each pressure sensor 20 can be detached from the fixing base 10. When one of the pressure sensors 20 fails or the type of the pressure sensor 20 needs to be replaced, the pressure sensor 20 can be taken out from the corresponding installation space 10a without affecting other pressure sensors 20.

[0042] Each pressure sensor 20 can be detachably fitted with the fixing base 10 by means of snap - fitting or the like, without limitation here.

[0043] The pressure detection component 21, that is, the pressure sensor 20, is a component for detecting pressure. The pressure detection component 21 can sense the pressure signal, convert the pressure signal into an electrical signal, and output it through the conductive output component 22.

[0044] The conductive output component 22 can serve as a bridge for connecting the pressure sensor 20 with an external device, and transmit the electrical signal generated by the pressure detection component 21 to the external device.

[0045] It can be understood that the external device can be a measuring device or a signal processing module.

[0046] Exemplarily, the external device can be a signal processing module, which can receive the electrical signal from the pressure detection component 21 output by the conductive output component 22, and perform signal conditioning, analog-to-digital conversion, etc. on the electrical signal. Exemplarily, the signal processing module can amplify and filter the electrical signal, increase the signal strength, reduce noise, improve the signal-to-noise ratio and linearity, so as to facilitate further processing or transmission. The signal processing module can also convert the electrical signal into a digital signal and perform processing to facilitate signal transmission, and improve the measurement accuracy and stability. The signal processing module can transmit the processed electrical signal to the measuring device through a cable or an output interface, so as to display the pressure change data or the pressure change waveform through the measuring device, thereby realizing pressure measurement.

[0047] The pressure detection component 21 is arranged in the installation space 10a, and the pressure detection component 21 will not be exposed outside the sensor module 100. The fixing seat 10 can protect the pressure detection component 21 and reduce the influence of external dust, moisture, etc. on the pressure detection component 21.

[0048] The other end of the conductive output component 22 is exposed on the outer surface of the sensor module 100, which means that the conductive output components 22 of the pressure sensors 20 can be directly seen by the user. When the sensor module 100 needs to be installed and detected, the conductive output components 22 can be electrically connected to the external device, so that the conductive output components 22 can transmit the electrical signal of the pressure detection component 21 to the external device.

[0049] That is to say, in this embodiment, the pressure sensors 20 are respectively connected to the external device, the pressure sensors 20 work independently and transmit signals, and the pressure sensors 20 are not encapsulated together with the fixing seat 10, the signal processing module, etc., and the flexibility of use is high.

[0050] The first direction can be any direction. Exemplarily, as shown in Figure 3 , the first direction is the thickness direction of the fixing seat 10, and the thickness direction of the fixing seat 10 is consistent with the thickness direction of the sensor module 100.

[0051] The sensor module 100 provided by the embodiments of the present application. The arrangement of multiple pressure sensors 20 can measure the pressure distribution at multiple measurement points simultaneously or separately, providing relatively comprehensive pressure information, with high measurement accuracy and stability, and being convenient for adapting to complex application scenarios. The multiple pressure sensors 20 are not connected to each other and can be respectively connected to external devices through the exposed conductive output components 22. Users can individually adjust or replace the pressure sensors 20 at each position according to measurement requirements without operating on the entire sensor module 100. The sensor module 100 has high flexibility in use. At the same time, it is also convenient for upgrading and expanding the sensor module 100. In addition, when a failure occurs, the specific pressure sensor 20 can be quickly located and replaced without replacing the entire sensor module 100, reducing the maintenance cost and downtime.

[0052] The specific structure of the conductive output component 22 is not limited.

[0053] In some embodiments, please refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the pressure detection component 21 includes at least one pressure element 211, and the conductive output component 22 includes a conductive substrate 221 and a wire harness 222 that are connected to each other. The conductive substrate 221 is disposed in the installation space 10a and is electrically connected to the pressure element 211. A part of the wire harness 222 protrudes from the first end of the fixing base 10 along the first direction.

[0054] At least one pressure element 211 means that the number of pressure elements 211 can be one, or two, three or more. Exemplarily, the number of pressure elements 211 is multiple. In this way, the detection sensitivity of a single pressure sensor 20 can be improved to meet the requirements of high-precision measurement and micro-signal detection.

[0055] The pressure element 211 is used to detect pressure changes and generate an electrical signal. Exemplarily, the pressure element 211 can be a quartz sheet, a strain gauge, etc., which is not limited herein.

[0056] The conductive substrate 221 is electrically connected to the pressure element 211. The pressure element 211 and the conductive substrate 221 can have a relatively large docking area, which is convenient for realizing a reliable electrical connection. Of course, the conductive substrate 221 can also be formed into the structure of an electrode sheet to collect the charges generated by the pressure element 211.

[0057] The wire harness 222 refers to an aggregate composed of multiple wires. The wire harness 222 integrates multiple wires together to facilitate the transmission of electrical signals. The wire harness 222 can also include an insulating layer wrapped outside the wires to prevent leakage and short circuit.

[0058] It is understandable that the other end of the conductive wire bundle 222 (the end away from the pressure detection component 21) can be provided with a connector to serve as a male head. When the sensor module 100 is installed and tested, reliable transmission of electrical signals can be achieved through connection with an external female head.

[0059] The conductive wire bundle 222 and the conductive substrate 221 may be an integrated structure or a separate structure, which is not limited here.

[0060] In this embodiment, the cooperation between the conductive substrate 221 and the conductive wire bundle 222 can facilitate reliable electrical connection with the pressure element 211 and external equipment, thereby increasing the stability of the electrical connection.

[0061] For some examples, see Figure 3 , Figure 4 and Figure 5 There are multiple pressure elements 211 , which are stacked along a first direction, and the polarities of the surfaces on the opposite sides of any two adjacent pressure elements 211 are the same. The conductive substrate 221 is sandwiched between two adjacent pressure elements 211 .

[0062] The multiple pressure elements 211 are stacked and arranged along the first direction, which means that the multiple pressure elements 211 are stacked and arranged along the first direction. In this way, the structural strength of the pressure detection component 21 can be increased and the probability of pressure concentration on a single pressure element 211 can be reduced.

[0063] The polarity of the surfaces on the opposite side of any two adjacent pressure elements 211 is the same, that is, when any two adjacent pressure elements 211 are subjected to the same mechanical pressure, charge separation in the same direction will occur, and charges in the same direction will accumulate, rather than cancel each other out. In this way, the sensitivity of the pressure sensor 20 can be significantly improved, and it is more sensitive to small changes. For example, when positive charges are generated on the surfaces on the opposite side of two adjacent pressure elements 211, negative charges are generated on the surfaces on the opposite side of the two adjacent pressure elements 211.

[0064] For example, see Figure 3 , the number of pressure elements 211 of a single pressure sensor 20 is two.

[0065] The conductive substrate 221 is clamped between two adjacent pressure elements 211. On the one hand, the conductive substrate 221 can be positioned and fixed by the two pressure elements 211, restricting the axial displacement of the conductive substrate 221, facilitating the installation of the conductive output assembly 22. The conductive substrate 221 can also always maintain conductive contact with the pressure elements 211, ensuring stable and reliable electrical connection without the need for additional wiring. On the other hand, the conductive substrate 221 can also collect the charges generated by the pressure elements 211, increasing the reliability of electrical signal transmission. Here, the axial direction is parallel to the first direction.

[0066] It can be understood that the polarity of the conductive substrate 221 can be set according to the polarity of the charges to be transmitted. If positive charges need to be output, the polarity of the conductive substrate 221 can be set to positive. If negative charges need to be output, the polarity of the conductive substrate 221 can be set to negative.

[0067] In this embodiment, the multiple pressure elements 211 can have sufficient structural strength, and the charges generated by the multiple pressure elements 211 can be accumulated together, resulting in high detection sensitivity of the pressure sensor 20. The cooperation between the conductive substrate 221 and the pressure elements 211 can achieve reliable electrical connection between the conductive output assembly 22 and the pressure detection assembly 21 while effectively collecting the charges generated by the pressure elements 211, realizing effective transmission of electrical signals.

[0068] In some embodiments, please refer to Figure 4 and Figure 5 , the pressure element 211 has a hollow area 211a, a part of the conductive substrate 221 is exposed through the hollow area 211a, one end of the wire harness 222 extends into the installation space 10a and is connected to the conductive substrate 221 through the hollow area 211a, and the wire harness 222 and the pressure detection assembly 21 do not contact each other.

[0069] The setting of the hollow area 211a can facilitate the exposure of the conductive substrate 221 through the hollow area 211a, so that the wire harness 222 can pass through the hollow area 211a to be connected to the conductive substrate 221, thereby outputting electrical signals.

[0070] The wire harness 222 and the pressure detection assembly 21 do not contact each other, which can reduce the probability of interference between the two, increase the detection accuracy of the pressure detection assembly 21, and at the same time, can also reduce the probability of positive and negative charge short circuits, increasing the structural reliability of the sensor module 100.

[0071] The hollow area 211a can penetrate the pressure element 211 along the first direction.

[0072] The shape of the pressure element 211 is not limited. The outer contour of the pressure element 211 can be circular, square, polygonal or other irregular shapes. The shape of the hollow area 211a can be the same as or different from the outer contour shape of the pressure element 211, and no limitation is made here.

[0073] In some embodiments, referring to Figures 3 to 5 , the pressure sensor 20 further includes a contact 23. One end of the contact 23 extends into the installation space 10a and abuts against the pressure detection component 21, and the other end protrudes from the second end of the fixed seat 10 along the first direction and is exposed on the outer surface of the sensor module 100. The contact 23 is used to transfer pressure to the pressure detection component 21.

[0074] The contact 23 can be the part of the pressure sensor 20 that directly contacts the external environment or the object to be measured, and can uniformly transfer the pressure applied from the outside to the pressure detection component 21 inside the installation space 10a.

[0075] The contact 23 can be the first contact point of the pressure sensor 20 with the outside world. Together with the fixed seat 10, the pressure detection component 21 is isolated in the installation space 10a, reducing the influence of the sensitive pressure detection component 21 by external dust, moisture, etc. The contact 23 can provide a stable and consistent contact surface to maintain the consistency and repeatability of the measurement. Of course, the contact 23 can also be designed into various shapes and sizes according to different application requirements to adapt to different installation conditions and force application methods.

[0076] In this embodiment, the contact 23 and the conductive output component 22 are arranged at opposite ends of the fixed seat 10 in the first direction and will not interfere with each other. While enabling the pressure to be uniformly and stably transferred to the pressure detection component 21, it also fixes the installation position of the pressure detection component 21 in the installation space 10a, reducing the probability of relative displacement or loosening of the pressure detection component 21 when the sensor module 100 is shaken, and maintaining the consistency of the force transfer path, thereby improving the accuracy of the measurement result.

[0077] In some embodiments, referring to Figure 3 and Figure 5 , at least a part of the contact 23 located in the installation space 10a abuts against the side wall of the installation space 10a. The contact 23 and the fixed seat 10 are metal parts. The pressure detection component 21 and the conductive output component 22 form a first electrode, and the pressure detection component 21, the contact 23, and the fixed seat 10 form a second electrode.

[0078] The contact 23 and the fixed seat 10 are metal parts, that is, the contact 23 and the fixed seat 10 have the function of conducting electricity. Exemplarily, the contact 23 and the fixed seat 10 can be made of materials such as copper and copper alloys, iron and iron alloys, aluminum and aluminum alloys.

[0079] The first electrode and the second electrode can act together to form a circuit to achieve effective transmission of the electrical signal of the pressure detection component 21. The polarities of the first electrode and the second electrode are not limited and can be determined according to the polarity of the transmitted charge. Exemplarily, when positive charge needs to be output, the first electrode can be the positive electrode and the second electrode can be the negative electrode. The positive charge generated by the pressure detection component 21 can be transmitted to an external device through the conductive output component 22, and the negative charge generated by the pressure detection component 21 flows out through the contact 23 and the fixed seat 10.

[0080] In some embodiments, referring to Figure 3 , on the side wall of the installation space 10a away from the conductive output component 22, an inward protrusion is formed to form a limiting wall 10c, and a part of the contact 23 abuts against the limiting wall 10c.

[0081] In this embodiment, the limiting wall 10c can limit the contact 23, increasing the installation stability of the contact 23, so that the contact 23 will not come out through the installation space 10a, facilitating the stable transmission of pressure.

[0082] In some embodiments, the fixed seat 10 is an integral structure.

[0083] That is to say, the fixed seat 10 is integrally manufactured and formed. In this way, the forming of the fixed seat 10 is convenient, the forming speed is fast, there is no need for splicing and installation, and the assembly of the sensor module 100 is simpler.

[0084] Exemplarily, the fixed seat 10 can be integrally formed by injection molding.

[0085] In some embodiments, referring to Figure 3 , Figure 4 and Figure 5 , the pressure sensor 20 further includes an insulating ring 24, and the insulating ring 24 is sleeved on the outer periphery of the pressure detection component 21.

[0086] In this embodiment, the setting of the insulating ring 24 can isolate the pressure detection component 21 from the side wall of the installation space 10a, that is, isolate the pressure detection component 21 from the fixed seat 10, so as to reduce the probability of positive and negative charge short circuits.

[0087] In some embodiments, referring to Figure 3 , Figure 4 and Figure 5 , the pressure sensor 20 further includes a positioning member 25. The positioning member 25 is arranged in the installation space 10a. The positioning member 25 covers the outer periphery of the pressure detection component 21. The positioning member 25 has a positioning space 25a, and the conductive output component 22 passes through the positioning space 25a.

[0088] Specifically, the conductive wire harness 222 is disposed through the positioning space 25a. The positioning space 25a can position the position of the conductive wire harness 222, so that the position of the conductive wire harness 222 is stable and unnecessary shaking and deviation will not occur within the installation space 10a, thereby facilitating the connection with external devices and making the overall structure of the sensor module 100 more reliable.

[0089] The positioning space 25a can penetrate the positioning member 25 along the first direction.

[0090] It can be understood that, please refer to Figure 3 , in the embodiment provided with the insulating ring 24, a ring groove can be provided on one side of the contact 23 facing the pressure detection component 21 along the first direction, and the insulating ring 24 is disposed in the ring groove to fix the position of the insulating ring 24. The positioning member 25 covers the insulating ring 24 and the pressure detection component 21.

[0091] In this embodiment, the setting of the positioning member 25 can position the conductive output component 22, limit the movement of the conductive output component 22, increase the electrical connection stability between the conductive output component 22 and the pressure detection component 21 and external devices, and has high assembly reliability. At the same time, the positioning member 25 can also protect the pressure detection component 21 and reduce the probability of damage to the pressure detection component 21.

[0092] In some embodiments, please refer to Figure 3 、 Figure 4 and Figure 5 , the pressure sensor 20 further includes an elastic member 26 and a gasket 27. The elastic member 26 and the gasket 27 are disposed in the installation space 10a. Two ends of the elastic member 26 are respectively in contact with the positioning member 25 and the gasket 27, and the positioning member 25 can be in contact with the pressure detection component 21 under the elastic force of the elastic member 26.

[0093] In this embodiment, the setting of the elastic member 26 can dispose the pressure detection component 21 between the contact 23 and the positioning member 25, so that the position of the pressure detection component 21 is fixed and unnecessary movement will not occur, facilitating the transmission of pressure. At the same time, the setting of the elastic member 26 can also level the pressure detection component 21 through the positioning member 25, so that the contact surface between the pressure detection component 21 and the contact 23 is flat, facilitating the contact 23 to uniformly transmit the pressure to the pressure detection component 21. The positioning member 25 separates the elastic member 26 and the pressure detection component 21, which can reduce the influence of the elastic force of the elastic member 26 on the pressure detection component 21 and reduce the probability of stress concentration. At the same time, the setting of the gasket 27 can also provide a stable setting space for the elastic member 26 together with the positioning member 25 and increase the setting stability of the elastic member 26.

[0094] The specific structure of the elastic member 26 is not limited. Exemplarily, please refer to Figure 3 、Figure 4 and Figure 5 The elastic member 26 may be a spring.

[0095] In some embodiments, referring to Figures 1 to 5 , the sensor module 100 further includes a retaining ring 40. A side wall of the mounting space 10a on a side away from the pressure detection component 21 is recessed outward to form a retaining groove 10d. A second end of the retaining ring 40 along the first direction has a first end face 40a. A part of the first end face 40a abuts against the gasket 27, and another part abuts against the groove wall of the retaining groove 10d.

[0096] Exemplarily, the retaining ring 40 may extend into the mounting space 10a from the first end to the second end along the first direction and be docked with the gasket 27 and the retaining groove 10d. When the first end face 40a abuts against the groove wall of the retaining groove 10d and the gasket 27, the retaining ring 40 can form a stop, and the gasket 27, the elastic member 26, the pressure detection component 21, etc. cannot be disengaged from the fixing base 10 from the first end of the fixing base 10 along the first direction.

[0097] It can be understood that the side wall of the mounting space 10a on a side away from the pressure detection component 21 is recessed outward to form the retaining groove 10d, which means that along the first direction, the cross-sectional area of the mounting space 10a at the retaining groove 10d is larger than the cross-sectional area of the part of the mounting space 10a outside the retaining groove 10d. In this way, the retaining ring 40 can be fixed through the retaining groove 10d to form a reliable stop for the gasket 27, the elastic member 26, the pressure detection component 21, etc. below.

[0098] In this embodiment, the setting of the retaining ring 40 can cooperate with the retaining groove 10d to provide mechanical support for the pressure sensor 20, and can reduce the probability that the components of the pressure sensor 20 in the sensor module 100 are disengaged due to external vibration or external force, and increase the overall stability of the sensor module 100. In this way, the sensor module 100 can be assembled as a stable whole without component detachment, and the assembly reliability is high.

[0099] The material of the retaining ring 40 is not limited. Exemplarily, the retaining ring 40 may be made of carbon spring steel, stainless steel, etc. The number of the retaining rings 40 may correspond one-to-one to the number of the pressure sensors 20 and the mounting spaces 10a.

[0100] During installation, a circlip pliers can be used to insert the jaws into the clamping holes of the retaining ring 40 to clamp the retaining ring 40, and then the retaining ring 40 is extended into the part of the mounting space 10a located at the retaining groove 10d. Then, the circlip pliers are loosened, and the retaining ring 40 deforms outward and abuts against the groove wall of the retaining groove 10d.

[0101] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples.

[0102] The foregoing is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sensor module, characterized in that: include: A fixing seat, provided with a plurality of installation spaces which are not connected to each other, wherein the installation spaces penetrate the fixing seat along a first direction; A plurality of pressure sensors, each of the pressure sensors being detachably arranged in each of the installation spaces; Among them, each of the pressure sensors respectively includes a pressure detection component and a conductive output component, the pressure detection component is arranged in the installation space, one end of the conductive output component is electrically connected to the pressure detection component, and the other end of the conductive output component protrudes from the first end of the fixing seat along the first direction and is exposed on the outer surface of the sensor module, so as to realize the electrical connection between each of the pressure sensors and external equipment.

2. The sensor module according to claim 1, characterized in that: The pressure detection component includes at least one pressure element, and the conductive output component includes a conductive substrate and a conductive wire bundle that are connected to each other. The conductive substrate is arranged in the installation space and is electrically connected to the pressure element. A portion of the conductive wire bundle protrudes from the first end of the fixing seat along the first direction.

3. The sensor module according to claim 2, characterized in that: There are multiple pressure elements, which are stacked along the first direction, and the polarities of the surfaces on the opposite sides of any two adjacent pressure elements are the same. The conductive substrate is sandwiched between two adjacent pressure elements.

4. The sensor module according to claim 2, characterized in that: The pressure element has a hollow area, part of the conductive substrate is exposed through the hollow area, one end of the conductive wire bundle extends into the installation space and is connected to the conductive substrate through the hollow area, and the conductive wire bundle and the pressure detection component do not contact each other.

5. The sensor module according to claim 1, characterized in that: The pressure sensor also includes a contact, one end of which extends into the installation space and abuts against the pressure detection component, and the other end protrudes from the second end of the fixing seat along the first direction and is exposed on the outer surface of the sensor module. The contact is used to transmit pressure to the pressure detection component.

6. The sensor module according to claim 5, characterized in that: At least part of the contact located in the installation space abuts against a side wall of the installation space, the contact and the fixing seat are metal parts, the pressure detection component and the conductive output component form a first electrode, and the pressure detection component, the contact and the fixing seat form a second electrode; And / or, a side wall of the installation space away from the conductive output component protrudes inward to form a limiting wall, and a portion of the contact abuts against the limiting wall.

7. The sensor module according to any one of claims 1 to 6, characterized in that: The fixing seat is an integrated structure; and / or the pressure sensor further includes an insulating ring, and the insulating ring is sleeved on the outer periphery of the pressure detection component.

8. The sensor module according to claim 1, characterized in that: The pressure sensor further includes a positioning member, which is disposed in the installation space. The positioning member is covered on the outer periphery of the pressure detection component. The positioning member has a positioning space, and the conductive output component is penetrated through the positioning space.

9. The sensor module according to claim 8, characterized in that: The pressure sensor also includes an elastic member and a gasket, which are arranged in the installation space. The two ends of the elastic member are respectively abutted against the positioning member and the gasket. The positioning member can maintain abutment with the pressure detection component under the elastic force of the elastic member.

10. The sensor module according to claim 9, characterized in that: The sensor module also includes a retaining ring, and the side wall of the installation space on the side away from the pressure detection component is recessed outward to form a stop groove, and the second end of the retaining ring along the first direction has a first end face, a portion of the first end face abuts against the gasket, and another portion abuts against the groove wall of the stop groove.

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