A dual channel sensor

Abstract

This invention relates to the field of sensor technology, specifically to a dual-channel sensor. By setting a fixing component, two sensors are fixed to the fixing component. The fixing component is fixedly connected to the connector to achieve a stable fixation. The lower surface of the fixing component is sealed to the bottom of the first cavity to support the fixing component, prevent vibration of the fixing component, and thus achieve effective sealing. This ensures that the medium can be delivered to the detection hole for detection, thereby ensuring the accuracy of the medium detection results.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, specifically to a dual-channel sensor. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] As an important means of transportation for people, the safety of automobiles is of paramount importance. The importance of sensors, the terminal components used for automobile inspection, is self-evident. However, current sensor detection is limited. Because vehicles travel on different road surfaces, the vibration resistance requirements of sensors are very high. Inappropriate design can lead to unstable sensor fixation and poor sealing, resulting in inaccurate detection results for the medium. Summary of the Invention

[0004] To address the problem of inaccurate medium detection results due to unstable internal fixing of sensors and resulting in poor sealing, this invention provides a dual-channel sensor. Two sensors are fixed to a fixing component, which is then securely connected to a connector. The lower surface of the fixing component is sealed to the bottom of the first cavity, providing support and preventing vibration. This ensures effective sealing, allowing the medium to be delivered to the detection port for detection, thus guaranteeing accurate medium detection results.

[0005] To achieve the above objectives, the invention provides the following technical solution: a dual-channel sensor, comprising... Measuring element, the measuring element includes An integrally molded measuring component housing, wherein a first cavity is provided inside the measuring component housing, an opening is provided at the upper part of the measuring component housing, the first cavity is connected to the opening, a sampling part is provided at the lower part of the measuring component housing, and a channel for detecting a medium is provided in the sampling part, the channel being connected to the first cavity; Dual-station inspection assembly, the dual-station inspection assembly includes A fastener has two detection holes that penetrate the upper and lower surfaces. A fixing groove is provided on the upper surface of the fastener, and the fixing groove communicates with the detection holes. Two detection units are fixedly and sealed in a fixed groove, such that the detection parts of the two detection units are set in two detection holes, and the channel is connected to the detection holes; Connector, the connector includes An integrally molded connector housing, the connector housing including a plug-in part and a connecting part, the upper end of the plug-in part being provided with a plug interface; A second cavity is provided inside the connecting part; The connector pin is fixedly and sealed to the connector portion, with the upper end of the connector pin positioned inside the connector and the lower end positioned inside the second cavity. The signal from the detection unit is output through the connector pin. After the connecting part is fixedly connected to the fixing member, the fixing member is inserted into the first cavity and the opening is pressed and riveted onto the connector, so that the lower part of the fixing member is sealed with the bottom of the first cavity, and the measuring part is sealed with the connector.

[0006] This invention provides a dual-channel sensor, wherein the upper end of the connecting part and the lower end of the plug-in part are connected to form a step, and the opening is riveted to the step. By riveting the opening to the step, the measuring component housing and the connector are fixedly and sealed, ensuring that the sensor is fixed, stable and reliable.

[0007] This invention provides a dual-channel sensor. The fixing component has symmetrically arranged buckles on its side, and the connecting part has a slot. The buckles engage with the slots, ensuring a fixed connection between the fixing component and the connecting part when the upper surface of the fixing component contacts the lower surface of the connecting part. This contact connection between the upper surface of the fixing component and the lower surface of the connecting part prevents movement and deformation of the fixing component caused by the compression of the lower surface of the fixing component by the first cavity when the opening is pressed into the connector. It ensures a tight seal between the lower part of the fixing component and the bottom of the first cavity, and its core function is to guarantee overall support during pressing.

[0008] This invention provides a dual-channel sensor. The two detection units are a ceramic capacitive pressure sensor and one of a temperature and humidity sensor. The dual-station detection assembly also includes a circuit board. The ceramic capacitive pressure sensor and one of the temperature and humidity sensors are electrically connected to the input terminal of the circuit board. The output terminal of the circuit board is electrically connected to a connector. This combination of pressure detection and temperature and humidity detection functions achieves a lightweight design while providing multiple functions. The independent channels ensure no interference between them, making it safer and more reliable.

[0009] This invention provides a dual-channel sensor. The ceramic capacitive pressure sensor includes a thick ceramic sheet and a thin first ceramic sheet, which extend to the temperature and humidity sensor mounting area. The pins of the temperature and humidity sensor pass through and are fixedly connected to the thick and thin ceramic sheets. By modifying the capacitor structure and employing a ceramic sheet perforation process, the temperature and humidity chip is integrated with the capacitor. The temperature and humidity chip is transmitted to the flexible circuit board chip via the substrate circuitry and edge card. The independent channels enable integrated temperature and pressure detection without interference. Its advantages include combining pressure monitoring and temperature and humidity detection functions, achieving a lightweight design while providing multiple functions, and using independent channels for enhanced safety and reliability.

[0010] This invention provides a dual-channel sensor, wherein the two detection units are two ceramic capacitive pressure sensors, and the dual-station detection assembly also includes a circuit board. The two ceramic capacitive pressure sensors are electrically connected to the input terminal of the circuit board, and the output terminal of the circuit board is electrically connected to a connector. This allows for simultaneous monitoring, and also enables seamless switching in case of failure on one side.

[0011] This invention provides a dual-channel sensor. The ceramic capacitive pressure sensor includes a thick ceramic sheet and a thin first ceramic sheet. The thick ceramic sheets of the two ceramic capacitive pressure sensors are an integral structure, while the thin first ceramic sheet consists of two independent units. The ceramic thick sheets of the capacitor are designed as a single unit, while the pressure-bearing surfaces of the thin ceramic sheets are two independent structures with independent channels for dual-pressure testing without interference. This allows for simultaneous monitoring or a standby configuration to ensure normal monitoring even if one side fails. Advantages include: lightweight dual-pressure monitoring; dual-channel independent monitoring using a combined capacitor, improving the product's bidirectional monitoring capability; and seamless switching in the event of a failure on one side.

[0012] This invention provides a dual-channel sensor. The two detection units further include a second ceramic sheet, which is sealed to the first ceramic sheet with glass sealant to form a buffer cavity. Design concept: To adapt to higher pressure application environments, a cavity structure is added to the original capacitor pressure-bearing surface. This added structural layer protects the internal effective circuitry and also acts as a pressure buffer, making the product more robust and pressure-resistant. Advantages: 1. It can increase the upper limit of the design pressure of the ceramic capacitor sensitive element while ensuring testing accuracy and sensitivity; 2. It can solve the waterproofing problem of single-layer capacitors, increase the stability of the capacitor structure, and improve the product's performance under high impact.

[0013] This invention provides a dual-channel sensor, wherein the channel includes one inlet and two outlets, the outlets are connected to a first cavity, the inlet extends in the opening direction and is connected to the two outlets respectively, and a single inlet enables independent monitoring of dual channels, saving costs.

[0014] This invention provides a dual-channel sensor, wherein the channel includes two inlets and two outlets. The outlets are connected to a first cavity, and the inlets open and connect to the two outlets respectively, forming independent channels. By designing the two inlets to be located at different positions, simultaneous monitoring can be achieved, and the pressure difference between the two channels can be calculated, thereby improving the product's safety monitoring capabilities.

[0015] Compared with the prior art, the beneficial effects of the invention are as follows: The present invention provides a dual-channel sensor. By setting a fixing member, two sensors are fixed on the fixing member. The fixing member is fixedly connected to the connector to achieve a stable fixation. The lower surface of the fixing member is sealed to the bottom of the first cavity to support the fixing member, avoid vibration of the fixing member, and thus achieve effective sealing. This ensures that the medium can be delivered to the detection hole for detection, thereby ensuring the accuracy of the medium detection results. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall assembly of a dual-channel sensor for invention; Figure 2 for Figure 1 Cross-sectional view; Figure 3 This is a cross-sectional view of the housing of one of the measuring components; Figure 4 This is a structural schematic diagram of the fastener; Figure 5 This is a schematic diagram of the first structure of the connector housing; Figure 6 This is a schematic diagram of the second structure of the connector housing; Figure 7 This is a schematic diagram of the first structure of the two detection units; Figure 8 This is a schematic diagram of the second structure of the two detection units. Detailed Implementation

[0017] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0018] In the description of the invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "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 the invention 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 the invention.

[0019] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "configuration" should be interpreted broadly. For example, they can refer to a fixed connection or configuration, a detachable connection or configuration, or an integral connection or configuration. Those skilled in the art can understand the specific meaning of the above terms in the invention based on the specific circumstances.

[0020] This design can be used in other sealing and testing equipment and sealing devices.

[0021] The core of this design lies in meeting the needs of automobiles in different operating environments, especially during driving on harsh road surfaces, ensuring the overall stability and sealing of the sensor to guarantee the accuracy of the detection results. A dual-channel sensor is provided, which uses a fixing component to secure two sensors. The fixing component is then firmly connected to a connector for stable fixation. The lower surface of the fixing component is sealed to the bottom of the first cavity, providing support and preventing vibration, thus achieving effective sealing and ensuring that the medium can be delivered to the detection port for detection, thereby guaranteeing accurate medium detection results. The specific technical solution to the above problems is as follows: 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.

[0022] like Figure 1 , 2As shown in Figures 4, 5, and 6, a dual-channel sensor includes a measuring element 100, a dual-station detection assembly 200, and a connector 300. The measuring element 100 includes an integrally formed measuring element housing 10, with a first cavity 10a inside. An opening 10b is provided at the top of the measuring element housing 10, communicating with the first cavity 10a. A sampling section 10c is provided at the bottom of the measuring element housing 10, with a channel 10d for detecting a medium inside the sampling section 10c, communicating with the first cavity 10a. The dual-station detection assembly 200 includes a fixing element 20 and two detection units 21. Two detection holes 20a are provided on the fixing element 20, penetrating the upper and lower surfaces. A fixing groove 20b is provided on the upper surface of the fixing element 20. The two detection units 21 are fixedly and sealed in the fixed groove 20b, so that the detection parts of the two detection units 21 are set in the two detection holes 20a, and the channel 10d is connected to the detection hole 20a. The medium in the channel is detected by the two detection units. The connector 300 includes an integrally formed connector housing 30 and a plug pin 31. The connector housing 30 includes a plug part 30a and a connecting part 30c. The upper end of the plug part 30a is provided with a plug interface 30b. The connecting part 30c is provided with a second cavity 30d. The plug pin 31 is fixedly and sealed in the plug part 30a, so that the upper end of the plug pin 31 is set in the plug interface 30b, and the lower end of the plug pin 31 is set in the second cavity 30d. The signal of the detection unit 21 is output through the plug pin 31. After the connecting part 30c is fixedly connected to the fixing member 20, the fixing member 20 is inserted into the first cavity 10a, so that the two detection units 21 are set in the second cavity 30d, and the opening 10b is pressed and riveted to the connector 300, so that the lower part of the fixing member 20 is sealed to the bottom of the first cavity 10a, and the measuring member 100 is sealed to the connector 300. The connecting part 30c extends into the opening 10b and is fixedly and sealed to the opening 10b; and the upper part of the fixing member 20 is fixedly connected to the connecting part 30c, and the lower surface of the fixing member 20 is connected to the bottom of the first cavity 10a, so that the two outlets 10e of the channel 10d are respectively connected to and sealed to the two detection holes 20a, and the two detection units 21 obtain the pressure or temperature and humidity of the detected object through the channel 10d.

[0023] In one specific embodiment, such as Figure 5 and 6 As shown, the upper end of the connecting part 30c is connected to the lower end of the insertion part 30a to form a step 30e, and the opening 10b is riveted to the step 30e to ensure better sealing performance.

[0024] like Figure 4As shown, the fastener 20 has symmetrical buckles 20c on its side, and the connecting part 30c has a slot 30f. The buckles 20c and the slots 30f engage, so that when the upper surface of the fastener 20 contacts the lower surface of the connecting part 30c, the fastener 20 and the connecting part 30c are fixedly connected. The contact between the upper surface of the fastener 20 and the lower surface of the connecting part 30c prevents the first cavity 10a from squeezing the lower surface of the fastener 20 when the opening 10b is pressed against the connector 300, thus preventing the fastener 20 from moving or deforming due to the pressure of the first cavity 10a on the lower surface of the fastener 20. This ensures a seal between the lower part of the fastener 20 and the bottom of the first cavity 10a, and its core function is to ensure the overall support during the pressing and riveting process.

[0025] like Figure 2 and 8 As shown, the two detection units 21 are respectively a ceramic capacitive pressure sensor and a temperature and humidity sensor, or a temperature sensor and a humidity sensor. The dual-station detection assembly 200 also includes a circuit board 22. The ceramic capacitive pressure sensor and the temperature and humidity sensor, or a temperature sensor and a humidity sensor, are electrically connected to the input terminal of the circuit board 22. The output terminal of the circuit board 22 is electrically connected to the connector 31. The ceramic capacitive pressure sensor includes a ceramic thick sheet 21a and a first ceramic thin sheet 21b. The ceramic thick sheet 21a and the first ceramic thin sheet 21b extend to the temperature and humidity sensor fixing area, so that the pins of the temperature and humidity sensor pass through the ceramic thick sheet 21a and the first ceramic thin sheet 21b and are fixedly connected to the ceramic thick sheet 21a and the first ceramic thin sheet 21b. Channel 10d includes one inlet 10f and two outlets 10e. Outlet 10e is connected to the first cavity 10a. Inlet 10f extends towards opening 10b and is connected to the two outlets 10e respectively. The internal channel has a T-shaped structure. By changing the capacitor structure, the square capacitor is designed as a connected structure. Using ceramic sheet perforation technology, the temperature and humidity chip is combined with the capacitor. The temperature and humidity chip is conducted to the flexible circuit board chip through the substrate circuit and the edge card. The independent channel realizes integrated temperature and pressure detection without interference. Its advantages are that the pressure monitoring and temperature and humidity detection functions are combined to achieve overall lightweight and multi-functionality. The independent channel does not interfere with each other, making it safer and more reliable.

[0026] like Figure 2 , 3As shown in Figure 7, the two detection units 21 are two ceramic capacitive pressure sensors. The dual-station detection assembly 200 also includes a circuit board 22. The two ceramic capacitive pressure sensors are electrically connected to the input terminals of the circuit board 22, and the output terminals of the circuit board 22 are electrically connected to the connector pins 31. The ceramic capacitive pressure sensor includes a ceramic thick sheet 21a and a first ceramic thin sheet 21b. The ceramic thick sheet 21a of the two ceramic capacitive pressure sensors is an integral structure, and the first ceramic thin sheet 21b is two independent units. The channel 10d includes one inlet 10f and two outlets 10e. The outlets 10e are connected to the first cavity 10a. The inlet 10f extends towards the opening 10b and is connected to the two outlets 10e respectively. The internal channel is V-shaped. The square capacitor substrate is designed as a single integrated structure, with two independent thin-film pressure-bearing surfaces corresponding to two independent V-shaped sealed channels for dual-pressure testing. These independent structures allow for simultaneous monitoring or a standby configuration to handle failure on one side. Advantages include lightweight dual-pressure monitoring, employing a combined capacitor with independent dual-channel monitoring, enhancing the product's bidirectional monitoring capabilities, and enabling seamless switching in case of failure on one side. Design concept: The square capacitor substrate is designed as a single integrated structure, with two independent thin-film pressure-bearing surfaces corresponding to two sealed channels on the base for dual-pressure testing. These independent structures allow for simultaneous monitoring or a standby configuration. Advantages include lightweight dual-pressure monitoring, combined capacitor with independent dual-channel monitoring, achieving two purposes: 1. Simultaneous monitoring; 2. Calculation of the pressure difference between the two channels, improving the product's safety monitoring capabilities.

[0027] like Figure 7 and 8 As shown, the two detection units 21 also include a second ceramic sheet 21c, which is sealed to the first ceramic sheet 21b with glass sealant to form a buffer cavity 21d. Design concept: To adapt to higher pressure application environments, a cavity structure is added to the original capacitor pressure-bearing surface. This added structural layer protects the internal effective circuitry and also acts as a pressure buffer, making the product more robust and pressure-resistant. Advantages: First, it can increase the upper limit of the design pressure of the ceramic capacitor sensitive element while ensuring testing accuracy and sensitivity. Second, it can solve the waterproofing problem of single-layer capacitors, increase the stability of the capacitor structure, and improve the product's performance under high impact. The channel 10d may also include two inlets 10f and two outlets 10e. The outlets 10e are connected to the first cavity 10a. The inlets 10f are connected to the opening 10b and to the two outlets 10e respectively to form an independent channel 10d.

[0028] like Figure 4 and 6As shown, the fixing member 20 is provided with positioning protrusions 20d around its perimeter. The positioning protrusions 20d are tapered mechanisms, and the walls of the second cavity 30d inside the connector housing 30 are provided with inclined slopes 30g to achieve positioning when the fixing member 20 is connected to the connector housing 30.

[0029] During installation, first fix the two detection units 21 onto the fixing member 20, then connect the fixing member 20 to the connector housing 30, and finally press the opening 10b of the measuring member housing 10 onto the step 30e.

[0030] The above are merely specific embodiments of the invention, but the scope of protection of the invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the invention. Therefore, the scope of protection of the invention should be determined by the scope defined in the claims.

Claims

1. A dual-channel sensor, characterized in that: include Measuring element (100), said measuring element (100) includes An integrally formed measuring component housing (10) is provided inside the measuring component housing (10), a first cavity (10a) is provided inside the measuring component housing (10), an opening (10b) is provided at the upper part of the measuring component housing (10), the first cavity (10a) is connected to the opening (10b), a sampling part (10c) is provided at the lower part of the measuring component housing (10), a channel (10d) for detecting the medium is provided inside the sampling part (10c), and the channel (10d) is connected to the first cavity (10a); A dual-station inspection assembly (200), the dual-station inspection assembly (200) comprising: The fastener (20) has two detection holes (20a) that penetrate the upper and lower surfaces. The fastener (20) has a fixing groove (20b) on its upper surface that communicates with the detection holes (20a). Two detection units (21) are fixedly and sealed in the fixed groove (20b), so that the detection parts of the two detection units (21) are set in the two detection holes (20a), and the channel (10d) is connected to the detection hole (20a); Connector (300), the connector (300) includes An integrally formed connector housing (30) includes a plug-in portion (30a) and a connecting portion (30c), wherein the upper end of the plug-in portion (30a) is provided with a plug interface (30b). A second cavity (30d) is provided inside the connecting part (30c); The connector (31) is fixedly and sealed to the connector (30a), with the upper end of the connector (31) located in the connector (30b) and the lower end of the connector (31) located in the second cavity (30d). The signal of the detection unit (21) is output through the connector (31). After the connecting part (30c) is fixedly connected to the fixing member (20), the fixing member (20) is inserted into the first cavity (10a), and the opening (10b) is pressed and riveted onto the connector (300), so that the lower part of the fixing member (20) is sealed with the bottom of the first cavity (10a), and the measuring member (100) is sealed with the connector (300).

2. A dual-channel sensor as described in claim 1, characterized in that, The upper end of the connecting part (30c) is connected to the lower end of the plug-in part (30a) to form a step (30e), and the opening (10b) is riveted to the step (30e).

3. A dual-channel sensor as described in claim 1, characterized in that, The fastener (20) has symmetrical buckles (20c) on its side, and the connecting part (30c) has a slot (30f) on its side. The buckles (20c) engage with the slots (30f) so that when the upper surface of the fastener (20) contacts the lower surface of the connecting part (30c), the fastener (20) and the connecting part (30c) are fixedly connected.

4. A dual-channel sensor as described in claim 1, characterized in that, The two detection units (21) are respectively a ceramic capacitive pressure sensor and a temperature and humidity sensor, a temperature sensor and a humidity sensor. The dual-station detection assembly (200) also includes a circuit board (22). The ceramic capacitive pressure sensor and the temperature and humidity sensor are respectively electrically connected to the input terminal of the circuit board (22). The output terminal of the circuit board (22) is electrically connected to the connector (31).

5. A dual-channel sensor as described in claim 4, characterized in that, The ceramic capacitive pressure sensor includes a ceramic thick sheet (21a) and a first ceramic thin sheet (21b). The ceramic thick sheet (21a) and the first ceramic thin sheet (21b) extend to the temperature and humidity sensor fixing area, so that the pins of the temperature and humidity sensor pass through the ceramic thick sheet (21a) and the first ceramic thin sheet (21b) and are fixedly connected to the ceramic thick sheet (21a) and the first ceramic thin sheet (21b).

6. A dual-channel sensor as described in claim 1, characterized in that, The two detection units (21) are two ceramic capacitive pressure sensors. The dual-station detection assembly (200) also includes a circuit board (22). The two ceramic capacitive pressure sensors are electrically connected to the input end of the circuit board (22) respectively, and the output end of the circuit board (22) is electrically connected to the connector (31).

7. A dual-channel sensor as described in claim 6, characterized in that, The ceramic capacitive pressure sensor includes a ceramic thick sheet (21a) and a first ceramic thin sheet (21b). The ceramic thick sheet (21a) of the two ceramic capacitive pressure sensors is an integral structure, and the first ceramic thin sheet (21b) is two independent units.

8. A dual-channel sensor as described in claim 5 or 7, characterized in that, The two detection units (21) also include a second ceramic sheet (21c), which is sealed to the first ceramic sheet (21b) with glass sealant to form a buffer cavity (21d).

9. A dual-channel sensor as described in claim 1, characterized in that, The channel (10d) includes one inlet (10f) and two outlets (10e). The outlets (10e) are connected to the first cavity (10a). The inlet (10f) extends toward the opening (10b) and is connected to the two outlets (10e) respectively.

10. A dual-channel sensor as described in claim 1, characterized in that, The channel (10d) includes two inlets (10f) and two outlets (10e). The outlets (10e) are connected to the first cavity (10a). The inlets (10f) are connected to the opening (10b) and to the two outlets (10e) respectively to form an independent channel (10d).

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