Humidity sensor structure for high-temperature environment

Abstract

The utility model relates to a humidity sensor structure for a high temperature environment, which comprises a sensing module and a display module, and the sensing module comprises a dust cover fixed at the front end of a probe section through threaded connection; a humidity-sensitive element is mounted on the surface of the probe section; a lead is arranged in the connecting section, and the head end of the connecting section is fixedly connected with the probe section through a sleeving pin; the heat insulation section is made of a heat insulation material, and the head end is fixedly connected with the tail end of the connecting section through a sleeve pin; a signal collecting, processing and transmitting circuit is arranged in the device section, and the head end of the device section is fixedly connected with the tail end of the heat insulation section through a sleeving pin; the grip is fixedly connected to the tail end of the device section through a flange; the display module comprises a display main body embedded with a touchable display screen; the sensing module communicates with the display module in a wireless transmission mode. The humidity sensor can keep high-precision measurement in a high-temperature environment, and is scientific and reasonable in structure and safe and convenient to use.

Description

Technical Field

[0001] This utility model relates to a humidity sensor structure for high-temperature environments, which can be used for humidity measurement under high temperature and high pressure conditions. Background Technology

[0002] With the development of various industries in recent years, humidity measurement has become crucial for process optimization, equipment stability, and product quality in many sectors, especially in high-temperature environments. In fields such as petrochemicals, fuel cells, and aerospace, water vapor content directly affects material properties, chemical reaction rates, and energy conversion efficiency. For example, in fuel cell systems, suitable humidity can maintain the conductivity of the electrolyte membrane, improving battery life and efficiency. Therefore, designing and developing humidity sensing technologies that can withstand extreme temperatures and possess high accuracy and long-term stability is key to achieving precise humidity monitoring in high-temperature environments.

[0003] However, existing humidity sensors face numerous technical challenges and limitations when measuring in high-temperature environments. First, high temperatures exacerbate thermal noise and resistance changes in electronic components, affecting signal stability. Second, thermal expansion and material stress changes can cause package damage or device detachment, shortening sensor lifespan. Furthermore, dust, corrosive gases, and condensation in high-temperature environments can also affect the long-term stability and reliability of the sensor.

[0004] Therefore, to achieve accurate humidity measurement in high-temperature environments, it is necessary to optimize the sensor design structure to improve temperature resistance and measurement accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a humidity sensor structure for high-temperature environments, which has good high-temperature resistance, strong anti-interference ability, safe and reliable operation, good stability, and a split and detachable structure that is easy to carry, maintain and replace.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a humidity sensor structure for high-temperature environments, which includes a sensing module and a display module, wherein...

[0008] The sensing module includes:

[0009] The dust cover is fixed to the front end of the probe section by a threaded connection to isolate external dust;

[0010] The probe section is made of high-temperature resistant insulating material, with a humidity-sensitive element mounted on its surface.

[0011] The connecting section has internal lead wires, and its head end is fixedly connected to the probe section by a sleeve pin.

[0012] The insulation section is made of insulation material, and its first end is fixedly connected to the end of the connecting section by a sleeve pin.

[0013] The device section contains signal acquisition, processing and transmission circuits, and its first end is fixedly connected to the end of the heat insulation section by a sleeve pin.

[0014] The handle is fixed to the end of the component section via a flange connection.

[0015] The display module includes:

[0016] The main display unit is equipped with a touch screen, and also features a display switch, data interface, and power interface.

[0017] The sensing module and the display module communicate wirelessly, and both support dual power supply modes: built-in battery power and adapter power.

[0018] Optionally, the materials of the probe section and the heat insulation section are selected from polytetrafluoroethylene or polyetheretherketone.

[0019] Optionally, the dust cover and the probe section are detachably threaded.

[0020] Optionally, the grip and the device section are connected by a flange.

[0021] Optionally, the connection method between the connecting section, the heat insulation section and the device section is a socket pin connection.

[0022] Optionally, the internal circuitry of the device segment includes a signal acquisition module, a signal processing module, a control module, and a wireless transmission module.

[0023] Optionally, the internal circuitry of the display unit includes a signal receiving module, a data processing module, a control module, and a display driving module.

[0024] Optionally, the humidity-sensitive element of the sensing module is a resonant humidity-sensitive chip that converts humidity changes into frequency signal output.

[0025] Optionally, the display module's screen supports touch operation for setting sensor operating modes and parameters.

[0026] Optionally, the wireless transmission method is a local area network or Bluetooth.

[0027] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0028] The humidity sensor structure of this utility model solves the problems of decreased accuracy and short lifespan of traditional sensors in high-temperature environments through modular design, selection of high-temperature resistant materials and wireless communication technology. Moreover, the measurement and display parts are separate, which has strong anti-interference ability and provides a better human-computer interaction experience while ensuring high measurement accuracy.

[0029] Specifically, the advantages include:

[0030] High temperature resistance: The combination of the insulation section and PEEK / PTFE material enables the sensor to work stably in environments below 500℃.

[0031] Anti-interference capability: The dust cover and shielded lead design reduce the interference of the external environment on the signal.

[0032] Portability and intelligence: The detachable design supports remote monitoring, and the touch screen improves human-computer interaction efficiency.

[0033] In summary, the humidity sensor of this application solves the problems of decreased accuracy, insufficient stability, and poor device tolerance of traditional humidity sensors under high-temperature conditions. Through innovative structural design, the humidity sensor maintains high-precision measurement in high-temperature environments. Its scientifically sound structure ensures safe and convenient use, providing reliable protection for humidity monitoring in fields such as petrochemicals, fuel cells, and aerospace. Attached Figure Description

[0034] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0035] Figure 1 This is a schematic diagram of a temperature sensor structure according to an embodiment of the present invention;

[0036] Figure 2 This is a cross-sectional structural diagram of a sensing module according to one embodiment of the present invention;

[0037] Figure 3 This is a structural schematic diagram of a display module according to one embodiment of the present invention.

[0038] The annotations in the attached figures are explained as follows:

[0039] 100 Sensing module, 101 Dust cover, 102 Probe section, 103 Connecting section, 104 Heat insulation section, 105 Device section, 106 Grip;

[0040] 200. Display module; 201. Display body; 202. Display screen; 203. Display switch; 204. Data interface; 205. Power interface. Detailed Implementation

[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0044] This embodiment provides a humidity sensor structure for high-temperature environments, such as... Figures 1 to 3 As shown, it includes a sensing module 100 and a display module 200, wherein,

[0045] The sensing module 100 includes:

[0046] The dust cover 101 is fixed to the front end of the probe section 102 by a threaded connection to isolate external dust;

[0047] Probe section 102 is made of high-temperature resistant insulating material, with a humidity-sensitive element mounted on its surface;

[0048] The connecting section 103 has internal lead wires, and its first end is fixedly connected to the probe section 102 by a sleeve pin.

[0049] The heat insulation section 104 is made of heat insulation material, and its first end is fixedly connected to the end of the connecting section 103 by a sleeve pin.

[0050] The device section 105 is equipped with signal acquisition, processing and transmission circuits, and its first end is fixedly connected to the end of the heat insulation section 104 by a sleeve pin.

[0051] The handle 106 is fixed to the end of the device section 105 via a flange connection;

[0052] The display module 200 includes:

[0053] The main display unit 201 is embedded with a touch screen 202 and is equipped with a display switch 203, a data interface 204 and a power interface 205;

[0054] The sensing module 100 and the display module 200 communicate wirelessly, and both support dual-mode power supply, including built-in battery power and adapter power.

[0055] Optionally, the materials of the probe section 102 and the heat insulation section 104 are selected from polytetrafluoroethylene or polyetheretherketone.

[0056] Optionally, the dust cover 101 and the probe section 102 are detachably threaded.

[0057] Optionally, the grip 106 and the device segment 105 are connected by a flange.

[0058] Optionally, the connection method between the connecting section 103, the heat insulation section 104 and the device section 105 is a socket pin connection.

[0059] Optionally, the internal circuitry of the device segment 105 includes a signal acquisition module, a signal processing module, a control module, and a wireless transmission module. The internal circuitry of the display body 201 includes a signal receiving module, a data processing module, a control module, and a display driving module.

[0060] In other words, the device segment 104 contains circuitry with functions of data acquisition, processing, control, and transmission, while the display unit 201 contains circuitry with functions of receiving, processing, control, and display. Existing sensing, testing, and transmission circuits are sufficient for the circuitry; this application does not involve specific circuit or program optimizations, and its protection scope is limited to the sensor structure layout. Please be aware of this.

[0061] Optionally, the humidity-sensitive element of the sensing module 100 is a resonant humidity-sensitive chip that converts humidity changes into frequency signal output.

[0062] Optionally, the display screen 202 of the display module 200 supports touch operation for setting the sensor's working mode and parameters.

[0063] For a specific example, the structure and connection method of the humidity sensor, please refer to [link / reference]. Figures 1 to 3 The humidity sensor structure in this example includes a sensing module 100 and a display module 200. Specifically,

[0064] The sensing module 100 includes:

[0065] Dust cover 101: Made of stainless steel, with a threaded interface at the front end, which is connected to the probe section 102 by threads. It is detachable and replaceable, and is used to block dust and corrosive gases.

[0066] Probe section 102: Made of polyetheretherketone (PEEK), with a resonant humidity-sensitive chip (model: HS-2020) and a Pt100 temperature-sensitive element mounted on its surface, and fixed to the head end of the connecting section 103 by a sleeve pin connection;

[0067] Connection section 103: The inside is equipped with high temperature resistant silver-plated copper wires, the first end of which is connected to the probe section 102, and the last end is connected to the first end of the heat insulation section 104 through a fixed connection with a connecting pin.

[0068] Insulation section 104: Made of ceramic fiber composite material, with a length of 50mm, the first end is sleeved with the connecting section 103, and the last end is fixed to the first end of the device section 105 by a sleeve pin, used to block the high temperature transmitted from the front end (maximum withstand temperature 500℃).

[0069] Device segment 105: Internally integrates a signal acquisition module (ADC chip AD7124), a signal processing module (MCUSTM32F407), and a wireless transmission module (Bluetooth 5.0 chip CC2640R2F), and is fixed to the grip 106 via a flange connection;

[0070] Grip 106: Made of silicone-coated aluminum alloy with anti-slip texture for easy hand operation.

[0071] The display module 200 includes:

[0072] Display unit 201: The outer shell is made of ABS engineering plastic with IP67 protection rating, and the front is embedded with a 5-inch capacitive touch screen (model: DSI050TN01), which supports real-time display of humidity and temperature and parameter settings.

[0073] Interface configuration: A USB-C data interface 204 is provided on the side for data transmission, a DC 12V power interface 205 supports adapter power supply, and a built-in lithium-ion battery with a capacity of 5000mAh provides backup power.

[0074] Regarding the power supply and communication methods between the internal circuitry of the device segment and the internal circuitry of the display body, the following methods can be adopted:

[0075] Both the sensor module 100 and the display module 200 support dual-mode power supply: such as adapter power supply, which inputs 12V / 2A power through the DC interface; and built-in battery power supply, with the sensor module (100) having a built-in 18650 lithium-ion battery (capacity 3000mAh) and a battery life of ≥48 hours.

[0076] The wireless communication uses the Bluetooth 5.0 protocol, with a transmission distance of ≤50 meters and a data refresh rate of 1Hz.

[0077] The working principle and operation procedure of the humidity sensor are as follows:

[0078] Signal acquisition: The resonant humidity-sensitive chip in probe segment 102 converts changes in ambient humidity into frequency signals (range 10kHz-100kHz), and the temperature-sensitive element synchronously acquires temperature data.

[0079] Signal transmission: The signal is transmitted to the device section 105 via the lead in the connection section 103. After being converted into a digital signal by the ADC chip, the MCU performs temperature compensation and linearization processing, and finally sends it to the display module 200 via the Bluetooth module.

[0080] Data display and interaction: After receiving data, the display module 200 displays humidity (accuracy ±1.5%RH) and temperature (accuracy ±0.5℃) in real time through the touch screen 202. Users can set parameters such as alarm threshold and data storage mode through the touch interface.

[0081] Example of application in a high-temperature environment:

[0082] In a petrochemical reactor, the sensor module 100 is inserted into the detection port reserved on the side wall of the reactor body, and the handle 106 is exposed for easy operation.

[0083] Dustproof and heat insulation: Dust cover 101 prevents dust from entering, and heat insulation section 104 isolates the high temperature (about 300°C) inside the reactor, ensuring that the internal circuit temperature of device section 105 is ≤80°C;

[0084] Long-term stability test: After 1000 hours of continuous operation, the humidity measurement error was <2%RH, which verified the reliability of the structural design.

[0085] In summary, the humidity sensor structure of this application solves the problems of decreased accuracy and short lifespan of traditional sensors in high-temperature environments through modular design, selection of high-temperature resistant materials, and wireless communication technology. Furthermore, the measurement and display parts are separate, which has strong anti-interference capabilities and provides a better human-computer interaction experience while ensuring high measurement accuracy.

[0086] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A humidity sensor structure for high-temperature environments, characterized in that, It includes a sensing module (100) and a display module (200), wherein, The sensing module (100) includes: The dust cover (101) is fixed to the front end of the probe section (102) by a threaded connection to isolate external dust; The probe section (102) is made of high-temperature resistant insulating material, and a humidity-sensitive element is mounted on its surface. The connecting section (103) has internal lead wires, and its head end is fixedly connected to the probe section (102) by a socket pin. The heat insulation section (104) is made of heat insulation material, and its first end is fixedly connected to the end of the connecting section (103) by a sleeve pin. The device section (105) is equipped with signal acquisition, processing and transmission circuits, and its first end is fixedly connected to the end of the heat insulation section (104) by a sleeve pin. The handle (106) is fixed to the end of the device segment (105) via a flange connection; The display module (200) includes: The main display unit (201) is embedded with a touch screen (202) and is equipped with a display switch (203), a data interface (204) and a power interface (205). The sensing module (100) and the display module (200) communicate wirelessly, and both support dual-mode power supply, including built-in battery power and adapter power.

2. The humidity sensor structure according to claim 1, characterized in that: The materials of the probe section (102) and the heat insulation section (104) are selected from polytetrafluoroethylene or polyetheretherketone.

3. The humidity sensor structure according to claim 1, characterized in that: The dust cover (101) and the probe section (102) are detachable threaded connections.

4. The humidity sensor structure according to claim 1, characterized in that: The grip (106) and the device segment (105) are connected by a flange.

5. The humidity sensor structure according to any one of claims 1 to 4, characterized in that: The connection between the connecting section (103), the heat insulation section (104), and the device section (105) is a socket pin-fixed connection.

6. The humidity sensor structure according to claim 1, characterized in that: The internal circuitry of the device segment (105) includes a signal acquisition module, a signal processing module, a control module, and a wireless transmission module.

7. The humidity sensor structure according to claim 1 or 6, characterized in that: The internal circuitry of the display body (201) includes a signal receiving module, a data processing module, a control module, and a display driving module.

8. The humidity sensor structure according to claim 1, characterized in that: The humidity-sensitive element of the sensing module (100) is a resonant humidity-sensitive chip, which converts humidity changes into frequency signals for output.

9. The humidity sensor structure according to claim 1, characterized in that: The display screen (202) of the display module (200) supports touch operation and is used to set the sensor working mode and parameters.

10. The humidity sensor structure according to claim 1, characterized in that: The wireless transmission method is either a local area network (LAN) or Bluetooth.

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