Humidity sensor dehumidification device and control system thereof

Abstract

The utility model relates to the technical field of humidity sensors, in particular to a humidity sensor dehumidification device and a control system thereof, the dehumidification device comprises a shell assembly, a humidity sensor chip, a metal PAD and a metal resistance wire, the humidity sensor chip is arranged in the shell, and the metal PAD is arranged in the shell. The humidity sensor chip and the metal resistor are electrically connected with the metal PAD respectively, and the metal resistance wire is annularly distributed in the shell assembly in an S shape and located at the bottom of the humidity sensor chip. The purpose of the utility model is to solve the problem that the humidity sensor is easy to generate wet stagnation in the humidity circulation process.

Description

Technical Field

[0001] The utility model relates to the technical field of humidity sensors, in particular to a humidity sensor dehumidification device and a control system thereof. Background Art

[0002] A humidity sensor is a sensor used to monitor the humidity level of an environment. Its working principle is based on the change in capacitance caused by the change in the dielectric constant of the humidity-sensitive material. The change in capacitance is measured to obtain the value of the ambient humidity. With the development of artificial intelligence and automation technology, humidity sensors are increasingly used in meteorology, agriculture, industry and other fields. However, traditional humidity sensors are prone to hysteresis during the humidity cycle, which affects the accuracy and stability of the humidity sensor and reduces its sensitivity. Utility Model Content

[0003] The utility model aims to provide a humidity sensor dehumidification device and a control system thereof, so as to solve the problem that humidity sensors in the background technology are prone to stagnation during humidity circulation.

[0004] To achieve the above-mentioned purpose, the technical solution of the first aspect of the utility model provides a humidity sensor dehumidification device, including a shell assembly, a humidity sensor chip, a metal PAD and a metal resistance wire, wherein the humidity sensor chip is arranged in the shell, and the humidity sensor chip and the metal resistance wire are electrically connected to the metal PAD respectively, and the metal resistance wire is distributed in the shell assembly in an S-shaped ring shape and the metal resistance wire is located at the bottom of the humidity sensor chip.

[0005] Furthermore, the metal resistance wire is made of Pt material.

[0006] Furthermore, the metal PAD is arranged around the humidity sensor chip and the metal resistance wire.

[0007] Furthermore, there are 16 metal PADs, and the 16 metal PADs are evenly distributed on the shell assembly.

[0008] Furthermore, the housing assembly includes a first housing and a second housing, and the first housing and the second housing are sealedly connected.

[0009] Furthermore, a groove is provided in the middle of the first shell, and a plurality of through grooves are provided at the top of the groove.

[0010] Furthermore, a plurality of the through slots are arranged at equal intervals.

[0011] Furthermore, the metal resistance wire is attached to the top of the second shell and the metal resistance wire is located directly below the groove.

[0012] The technical solution of the second aspect of the present invention provides a control system for a humidity sensor dehumidification device, including the humidity sensor dehumidification device described in any one of the technical solutions of the first aspect of the present invention, the control system also includes a controller and a power supply module, the controller is signal-connected with the metal resistance wire and the humidity sensor chip, and the power supply module is electrically connected with the controller, the metal resistance wire and the humidity sensor chip.

[0013] The beneficial effects of the utility model include:

[0014] 1. The humidity sensor dehumidification device and control system provided by the utility model form a heating layer at the bottom of the humidity sensor chip by arranging metal resistance wires in an S-shaped ring distribution at the bottom of the humidity sensor chip. The humidity sensor chip can be evenly heated by applying voltage to the metal resistance wire. The dehumidification of the humidity sensor chip is accelerated during the dehumidification process of the humidity sensor chip, the humidity stagnation of the humidity sensor is reduced, and the sensitivity of the humidity sensor is increased, so that the humidity sensor can respond quickly and accurately to humidity changes in the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 An overall structural schematic diagram of a humidity sensor dehumidification device is provided for an embodiment of the utility model;

[0017] Figure 2 A partial structural schematic diagram of a humidity sensor dehumidification device provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the bottom structure of the humidity sensor dehumidification device provided in an embodiment of the utility model;

[0019] Figure 4 A schematic structural diagram of a control system of a humidity sensor dehumidification device provided in an embodiment of the utility model.

[0020] Icon: 1-humidity sensor chip, 2-metal PAD, 3-metal resistance wire, 4-first shell, 5-second shell, 6-groove, 7-through groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] See also Figures 1 to 3 As shown, the technical solution of the first aspect of the utility model provides a humidity sensor dehumidification device, including a shell assembly, a humidity sensor chip 1, a metal PAD2 and a metal resistance wire 3, wherein the humidity sensor chip 1 is arranged in the shell, the humidity sensor chip 1 and the metal resistance wire 3 are electrically connected to the metal PAD2 respectively, the metal resistance wire 3 is distributed in the shell assembly in an S-shaped ring shape and the metal resistance wire 3 is located at the bottom of the humidity sensor chip 1; specifically, the shell assembly mainly serves as an external protection structure of the entire device, and the shell assembly protects the internal humidity sensor chip 1 and other components from being affected by the external environment; the humidity sensor chip 1 is used to measure the humidity level of the external environment, and its principle is to use a capacitor to change the humidity level of the external environment. to reflect humidity changes; the metal resistance wire 3 can be made of metal materials such as copper, nickel, chromium, etc., and the appropriate material of the metal resistance wire 3 can be selected according to actual needs; the metal resistance wire 3 is distributed in the shell assembly in an S-shaped ring shape, which can achieve uniform heating of the entire humidity sensor chip 1, ensuring that all parts of the humidity sensor chip 1 can be properly heated, effectively improving the dehumidification effect; secondly, the metal resistance wire 3 is arranged at the bottom of the humidity sensor chip 1, which can maximize the use of the internal space of the sensor, avoid occupying the position of other important components, and help design a more compact and efficient humidity sensor; the humidity sensor chip 1 and the metal resistance wire 3 are electrically connected to the metal PAD 2 respectively through gold wire bonding;

[0024] The humidity sensor dehumidification device and control system provided in the present embodiment form a heating layer at the bottom of the humidity sensor chip 1 by arranging a metal resistance wire 3 with an S-shaped ring distribution at the bottom of the humidity sensor chip 1. The humidity sensor chip 1 can be evenly heated by applying a voltage to the metal resistance wire 3. During the dehumidification process of the humidity sensor chip 1, the dehumidification of the humidity sensor chip 1 is accelerated, the hysteresis of the humidity sensor is reduced, and the sensitivity of the humidity sensor is increased, so that the humidity sensor can respond quickly and accurately to the humidity changes in the external environment.

[0025] Preferably, the metal resistance wire 3 is made of Pt material; the metal resistance wire 3 made of Pt material has a high resistance temperature coefficient, can quickly generate heat, achieve rapid heating, and help accelerate the dehumidification process of the humidity sensor; on the other hand, the Pt material has good chemical stability, can maintain stable performance in the working environment of the humidity sensor, and extend the service life of the device; in this embodiment, the metal resistance wire 3 is preferably 1-2um in width, 40-8um in length, and 0.2um in thickness.

[0026] Preferably, the metal PAD 2 is arranged around the humidity sensor chip 1 and the metal resistance wire 3 , and 16 metal PADs 2 are provided, and the 16 metal PADs 2 are evenly distributed on the housing assembly.

[0027] Preferably, the shell assembly includes a first shell 4 and a second shell 5, the first shell 4 and the second shell 5 are sealed and connected, a groove 6 is provided in the middle of the first shell 4, a plurality of through grooves 7 are provided on the top of the groove 6, and the plurality of through grooves 7 are arranged at equal intervals, the metal resistance wire 3 is attached to the top of the second shell 5 and the metal resistance wire 3 is located directly below the groove 6; specifically, the through groove 7 is designed for air to enter and escape; the number of through grooves 7 can be adjusted according to actual needs; the size of the groove 6 should be consistent with the size and size of the metal resistance wire 3 and the humidity sensor chip 1; the first shell 4 and the second shell 5 can be sealed and connected by means such as threading, welding, adhesive, etc.;

[0028] See also Figure 4As shown, the technical solution of the second aspect of the utility model provides a control system for a humidity sensor dehumidification device, including the humidity sensor dehumidification device described in any one of the technical solutions of the first aspect of the utility model, the control system also includes a controller and a power module, the controller is signal-connected with the metal resistance wire 3 and the humidity sensor chip 1, and the power module is electrically connected with the controller, the metal resistance wire 3 and the humidity sensor chip 1; specifically, the controller can adopt an existing PLC controller to monitor the working state of the humidity sensor and control the operation of the dehumidification device as needed; the controller can be configured to obtain data and status information of the humidity sensor in real time, so as to make corresponding control decisions, for example, when the humidity sensor chip 1 completes the data acquisition task, the metal resistance wire 3 is controlled to heat the humidity sensor chip 1, accelerate the dehumidification process of the humidity sensitive material, and solve the stagnation problem; the power module is used to provide power supply for the entire system; the control system of the humidity sensor dehumidification device realizes intelligent humidity control, has the advantages of real-time, energy-saving and high efficiency, and automated management, can improve the performance and reliability of the dehumidification device, and ensure the stable operation of the sensor in a humid environment.

[0029] In addition to the above description, there are a few points to note:

[0030] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design;

[0031] (2) The control programs of the humidity sensor and the like in the present disclosure are all mature conventional technologies in the prior art. Those skilled in the art can realize the application of the present utility model based on the principle of the same function in the prior art. The program part is not the innovative point of the present utility model;

[0032] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A humidity sensor dehumidification device, characterized in that: The invention comprises a housing component, a humidity sensor chip (1), a metal PAD (2) and a metal resistance wire (3); the humidity sensor chip (1) is arranged in the housing; the humidity sensor chip (1) and the metal resistance wire (3) are respectively electrically connected to the metal PAD (2); the metal resistance wire (3) is distributed in the housing component in an S-shaped ring shape and is located at the bottom of the humidity sensor chip (1).

2. The humidity sensor dehumidification device according to claim 1, characterized in that: The metal resistance wire (3) is made of Pt material.

3. The humidity sensor dehumidification device according to claim 1, characterized in that: The metal PAD (2) is arranged around the humidity sensor chip (1) and the metal resistance wire (3).

4. The humidity sensor dehumidification device according to claim 3, characterized in that: There are 16 metal PADs (2), and the 16 metal PADs (2) are evenly distributed on the shell component.

5. The humidity sensor dehumidification device according to any one of claims 1 to 4, characterized in that: The housing assembly comprises a first housing (4) and a second housing (5), wherein the first housing (4) and the second housing (5) are sealedly connected.

6. The humidity sensor dehumidification device according to claim 5, characterized in that: A groove (6) is provided in the middle of the first shell (4), and a plurality of through grooves (7) are provided at the top of the groove (6).

7. The humidity sensor dehumidification device according to claim 6, characterized in that: A plurality of the through slots (7) are arranged at equal intervals.

8. The humidity sensor dehumidification device according to claim 6, characterized in that: The metal resistance wire (3) is attached to the top of the second shell (5) and the metal resistance wire (3) is located directly below the groove (6).

9. A control system for a humidity sensor dehumidification device, characterized in that: The invention comprises a humidity sensor dehumidification device as described in any one of claims 1 to 8, wherein the control system further comprises a controller and a power supply module, wherein a signal connection is established between the controller and the metal resistance wire (3) and the humidity sensor chip (1), and an electrical connection is established between the power supply module and the controller, the metal resistance wire (3) and the humidity sensor chip (1).

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