Humidity sensor convenient to disassemble and used for risk monitoring

Abstract

The invention discloses an easy-to-disassemble humidity sensor for risk monitoring, and belongs to the technical field of sensors, the easy-to-disassemble humidity sensor for risk monitoring comprises a tank body, the top of the tank body is provided with an installation mechanism, and the outer wall of the tank body is provided with a protection mechanism close to the top. The device comprises a tank body, an automatic calibration mechanism is arranged in the tank body, the bottom of the automatic calibration mechanism is fixedly connected with a humidity sensitive element, a signal processing assembly is installed in the tank body, and the top of the signal processing assembly is fixedly connected with a connecting wire. In the whole calibration process, the microprocessor controls the driving motor to drive the lead screw, then the sliding block and the humidity sensitive element are driven to conduct calibration action, the automatic mode does not need manual operation to adjust the position of the humidity sensitive element for calibration, errors possibly caused by manual operation are reduced, and the calibration accuracy is improved. And a large amount of manpower and time cost can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of sensors, and in particular relates to a detachable humidity sensor for risk monitoring. Background Art

[0002] In today's complex and ever-changing industry, agriculture, warehousing and many other fields, humidity, as a key environmental parameter, has a profound impact on production processes, product quality, equipment life and personnel safety. Abnormal changes in humidity often indicate potential risks. Therefore, accurate, real-time and reliable monitoring of humidity has become one of the important means of risk prevention and control, and detachable humidity sensors have come into being.

[0003] After a traditional humidity sensor has been working for a long time, the accuracy of the humidity sensitive element inside the humidity sensor will begin to decrease under the influence of various factors. At this time, the humidity monitoring data of the humidity sensitive element will begin to become inaccurate. If the humidity sensitive element needs to be manually calibrated regularly, manual operation will not only lead to errors, but when the number of humidity sensors is large enough, manual calibration will require a lot of time and manpower, resulting in untimely calibration of the humidity sensor affecting the real-time monitoring of humidity. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a detachable humidity sensor for risk monitoring.

[0005] The technical solution adopted to solve the above technical problems is: a detachable humidity sensor for risk monitoring, comprising a tank body, a mounting mechanism is arranged on the top of the tank body, a protection mechanism is arranged on the outer wall of the tank body near the top, an automatic calibration mechanism is arranged inside the tank body, and a humidity sensitive element is fixedly connected to the bottom of the automatic calibration mechanism;

[0006] A signal processing component is installed inside the tank body, a connecting line is fixedly connected to the top of the signal processing component, a battery is installed inside the tank body, and a protective door is rotatably connected to the bottom of the tank body.

[0007] Furthermore, the mounting mechanism includes a mounting plate installed on the top of the tank body, the bottom of the mounting plate is rotatably connected to a plurality of fixing screws, two limit holes are provided inside the mounting plate, the insides of the two limit holes are fixedly connected to limit springs, the other ends of the two limit springs are fixedly connected to limit balls, a limit slot is provided inside the mounting plate, the top of the tank body is fixedly connected to a connecting block, and the inside of the connecting block is rotatably connected to a buckle.

[0008] When the tank body is not suitable for installing the mounting plate, it is only necessary to rotate the buckle inside the connecting block so that the buckle is buckled in the specified position. A variety of options can help the device to be installed in most terrains.

[0009] Furthermore, the outer wall of the connecting block is slidably fitted on the inner wall of the limiting sliding groove, and a limiting hole corresponding to the limiting ball is opened inside the connecting block.

[0010] Through the above technical solution, the outer wall of the connecting block fits and slides on the inner wall of the limiting slide groove. This tight fitting method can ensure that the connecting block moves along a specific path during the installation process. When the connecting block cooperates with the mounting plate, the limiting ball is inserted into the limiting hole inside the connecting block. This structure can effectively prevent the connection block from being displaced in the horizontal and vertical directions, thereby ensuring the connection stability between the tank body and the mounting plate.

[0011] Furthermore, the protection mechanism comprises a protection cover fixedly connected to the outer wall of the tank body, the outer wall of the protection cover is provided with a plurality of protection holes, and a waterproof breathable membrane is installed inside the protection cover.

[0012] Through the above technical solution, the protective cover is fixedly connected to the outer wall of the tank body, which serves as the first physical protective barrier. In many actual scenarios, the tank body may be subject to the risk of collision from the outside. A plurality of protective holes are provided on the protective cover. These protective holes can reduce the weight of the protective cover itself to a certain extent so that it will not cause excessive additional burden on the tank body. At the same time, the protective holes can also play a ventilation role to ensure that the air around the tank body can circulate normally. The waterproof and breathable membrane installed inside the protective cover is a high-tech material that allows gas molecules to pass through while preventing water molecules from passing through. It can prevent liquid water from directly contacting the sensor and causing damage, and ensure the normal exchange of gas molecules to ensure the accuracy of humidity measurement.

[0013] Furthermore, the automatic calibration mechanism includes a sealed cabin installed inside the tank body, a standard humidity source is installed inside the electronic valve, a docking tube is fixedly connected inside the sealed cabin, an electronic sealed valve corresponding to the docking tube is installed inside the sealed cabin, a microprocessor is fixedly connected inside the sealed cabin, a fixed block is fixedly connected to the top of the sealed cabin, a drive motor is fixedly connected inside the fixed block, a lead screw is fixedly connected to the output end of the drive motor, a sliding block is slidably connected to the outer wall of the lead screw, two limit blocks are fixedly connected to the outer wall of the humidity sensitive element, and the other end of the docking tube is fixedly connected to two limit rods corresponding to the limit blocks.

[0014] Through the above technical solution, when the humidity sensor needs to be calibrated, the microprocessor will control the electronic sealing valve to open. The opening of the electronic sealing valve connects the docking tube in the sealed cabin to the standard humidity source. The standard humidity source can provide a known and accurate humidity environment as a calibration reference. At the same time, the drive motor starts to work and drives the screw to rotate. The rotation of the screw will cause the sliding block to slide along the outer wall of the screw. As the sliding block moves, it will push the humidity sensitive element closer to the docking tube. The two limit blocks on the outer wall of the humidity sensitive element will slide along the two limit rods at the end of the docking tube. This limit structure ensures that the humidity sensitive element can accurately dock with the docking tube, ensuring the accuracy and stability of the docking. After the humidity sensitive element is fully docked with the docking tube, the humidity sensitive element can sense the standard humidity environment provided by the standard humidity source. After sensing the standard humidity, the humidity sensitive element will transmit the corresponding electrical signal to the microprocessor. The microprocessor will compare the received signal with the known humidity value of the standard humidity source. According to the deviation value, the microprocessor can adjust the measurement parameters of the humidity sensitive element, so that the humidity sensitive element can more accurately reflect the ambient humidity in subsequent actual measurements. After the calibration is completed, the drive motor reverses, driving the screw to rotate in the opposite direction, so that the sliding block returns to the initial position, and the humidity sensitive element also leaves the docking tube, and the electronic sealing valve is closed, and the standard humidity source is sealed in the sealed cabin again, waiting for the next calibration.

[0015] Furthermore, a saturated salt solution is stored inside the standard humidity source.

[0016] Through the above technical solution, the saturated salt solution has a relatively stable humidity environment. When calibrating, the sensor can be stably exposed to this standard humidity environment, so as to calibrate more accurately.

[0017] Furthermore, the microprocessor is electrically connected to the electronic sealing valve and the driving motor via wires.

[0018] Through the above technical solution, the microprocessor can accurately control the opening and closing state of the electronic sealing valve by electrical connection through wires. During the automatic calibration process, when the standard humidity source needs to be connected to the docking tube, the microprocessor can send a precise electrical signal to open the electronic sealing valve to ensure that the humidity sensitive element is exposed to the standard humidity environment for calibration. For the drive motor, the microprocessor can send a pulse signal through the wire to accurately control the rotation direction and speed of the motor to ensure that the humidity sensitive element can complete the docking action smoothly and accurately.

[0019] Furthermore, the humidity sensitive element is fixedly connected to the bottom of the sliding block.

[0020] Through the above technical solution, when the sliding block moves under the drive of the screw rod, the humidity sensitive element will also move accurately. Since the movement of the screw rod can be accurately controlled by the driving motor, the humidity sensitive element can be accurately positioned to the required position.

[0021] The beneficial effects of the present invention are as follows: (1) The present invention designs an automatic calibration mechanism. The entire calibration process is controlled by a microprocessor to drive a drive motor to drive a lead screw, which in turn drives a sliding block and a humidity sensitive element to perform calibration. This automated method does not require manual operation to adjust the position of the humidity sensitive element for calibration, thereby reducing errors that may be caused by manual operation and greatly improving the efficiency of calibration, which can save a lot of manpower and time costs; (2) The present invention designs an installation mechanism so that installers can choose different installation methods for installation according to different terrains. The installation method is also simple and quick, which helps installers quickly install or remove the device, saving manpower and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 yes Figure 1 A transverse cross-sectional view of

[0024] Figure 3 It is a schematic diagram of the internal structure of the mounting plate of the present invention;

[0025] Figure 4 It is a schematic diagram of the buckle structure of the present invention;

[0026] Figure 5 is a schematic diagram of the protection mechanism of the present invention;

[0027] Figure 6 is a schematic diagram of the automatic calibration mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the standard humidity source structure of the present invention.

[0029] Figure numerals: 1. tank body; 2. mounting mechanism; 201. mounting plate; 202. fixing screw; 203. limiting hole; 204. limiting spring; 205. limiting ball; 206. limiting slide groove; 207. connecting block; 208. buckle; 3. protection mechanism; 301. protection cover; 302. protection hole; 303. waterproof breathable membrane; 4. automatic calibration mechanism; 401. sealed cabin; 402. standard humidity source; 403. docking tube; 404. electronic sealing valve; 405. microprocessor; 406. fixing block; 407. driving motor; 408. lead screw; 409. sliding block; 410. limiting block; 411. limiting rod; 5. humidity sensitive element; 6. signal processing component; 7. connecting line; 8. battery; 9. protection door. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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 intended to limit the present invention.

[0031] like Figure 1 - Figure 4As shown, a detachable humidity sensor for risk monitoring in this embodiment includes a tank body 1, a mounting mechanism 2 is arranged on the top of the tank body 1, the mounting mechanism 2 includes a mounting plate 201 mounted on the top of the tank body 1, a plurality of fixing screws 202 are rotatably connected to the bottom of the mounting plate 201, two limiting holes 203 are arranged inside the mounting plate 201, limiting springs 204 are fixedly connected inside the two limiting holes 203, the other ends of the two limiting springs 204 are fixedly connected to limiting balls 205, a limiting slide groove 206 is arranged inside the mounting plate 201, and a connecting block 207 is fixedly connected to the top of the tank body 1. The outer wall of the connecting block 207 fits and slides on the inner wall of the limiting groove 206, and a limiting hole corresponding to the limiting ball 205 is opened inside the connecting block 207. The outer wall of the connecting block 207 fits and slides on the inner wall of the limiting groove 206. This tight fitting method can ensure that the connecting block 207 moves along a specific path during installation. When the connecting block 207 cooperates with the mounting plate 201, the limiting ball 205 is inserted into the limiting hole inside the connecting block 207. This structure can effectively prevent the displacement of the connecting block 207 in the horizontal and vertical directions, ensure the connection stability between the tank body 1 and the mounting plate 201, and the connecting block The internal rotation connection of 207 is provided with a buckle 208. When the device can be fixedly installed at the specified position, it is only necessary to fix the mounting plate 201 by the fixing screws 202, and then align the connecting block 207 with the limiting slide groove 206 on the mounting plate 201. When the connecting block 207 enters the appropriate position inside the mounting plate 201, under the elastic force of the limiting spring 204, the limiting ball 205 will pop out and enter the limiting hole opened inside the connecting block 207, fixing the connecting block 207 to prevent the connecting block 207 from moving at will, thereby fixing the connecting block 207 on the mounting plate 201, completing the tank body 1 and the tank body 1. Installation of the mounting plate 201. When the tank body 1 needs to be disassembled, a certain external force needs to be applied to make the limiting ball 205 overcome the elastic force of the limiting spring 204 and move toward the limiting hole 203. When the limiting ball 205 is completely retracted into the limiting hole 203, the connecting block 207 is no longer stuck by the limiting ball 205. The connecting block 207 is removed from the mounting plate 201 to complete the disassembly of the tank body 1. When the target position is not suitable for installing the mounting plate 201, it is only necessary to rotate the buckle 208 inside the connecting block 207 so that the buckle 208 is buckled in the specified position. A variety of options can help the device to cope with most terrains for installation.

[0032] like Figure 5As shown, a protective mechanism 3 is provided near the top of the outer wall of the tank body 1, and the protective mechanism 3 includes a protective cover 301 fixedly connected to the outer wall of the tank body 1, and a plurality of protective holes 302 are provided on the outer wall of the protective cover 301. A waterproof and breathable membrane 303 is installed inside the protective cover 301. The protective cover 301 is fixedly connected to the outer wall of the tank body 1, and it plays the role of the first physical protection barrier. In many actual scenarios, the tank body 1 may be subject to the risk of collision from the outside. The protective cover 301 is provided with a plurality of protective holes 302. These protective holes 302 can reduce the weight of the protective cover 301 itself to a certain extent, so that it will not cause too much additional burden on the tank body 1. At the same time, the protective holes 302 can also play a role in ventilation, ensuring that the air around the tank body 1 can circulate normally. The waterproof and breathable membrane 303 installed inside the protective cover 301 is a high-tech material, which can allow gas molecules to pass through and prevent water molecules from passing through. It can prevent liquid water from directly contacting the sensor and causing damage, and can also ensure the normal exchange of gas molecules to ensure the accuracy of humidity measurement.

[0033] like Figure 6 and Figure 7As shown, an automatic calibration mechanism 4 is arranged inside the tank body 1, and the automatic calibration mechanism 4 comprises a sealed cabin 401 installed inside the tank body 1, a standard humidity source 402 is installed inside the electronic valve, a saturated salt solution is stored inside the standard humidity source 402, and the saturated salt solution has a relatively stable humidity environment. When calibrating, the sensor can be stably exposed to this standard humidity environment, so as to calibrate more accurately. A butt joint 403 is fixedly connected inside the sealed cabin 401, an electronic sealed valve 404 corresponding to the butt joint 403 is installed inside the sealed cabin 401, a microprocessor 405 is fixedly connected inside the sealed cabin 401, a fixed block 406 is fixedly connected to the top of the sealed cabin 401, and a drive motor 407 is fixedly connected inside the fixed block 406. The microprocessor 405 is electrically connected to the electronic sealed valve 404 and the drive motor 407 through a wire. By electrically connecting through the wire, the microprocessor 405 can accurately control the opening and closing state of the electronic sealed valve 404. During the automatic calibration process, when it is necessary to connect the standard humidity source 402 to the butt joint 403, When the electronic sealing valve 404 is connected, the microprocessor 405 can send an accurate electrical signal to open the electronic sealing valve 404 to ensure that the humidity sensitive element 5 is in contact with the standard humidity environment for calibration. For the driving motor 407, the microprocessor 405 can send a pulse signal through the wire to accurately control the rotation direction and speed of the motor to ensure that the humidity sensitive element 5 can smoothly and accurately complete the docking action. The output end of the driving motor 407 is fixedly connected with a screw rod 408, and the outer wall of the screw rod 408 is slidably connected with a sliding block 409. The humidity sensitive element 5 is fixedly connected to the bottom of the sliding block 409. When the sliding block 409 moves under the drive of the screw rod 408, the humidity sensitive element 5 will also move accurately. Since the movement of the screw rod 408 can be accurately controlled by the driving motor 407, the humidity sensitive element 5 can be accurately positioned to the required position. The outer wall of the humidity sensitive element 5 is fixedly connected with two limit blocks 410, and the other end of the docking pipe 403 is fixedly connected with two limit rods 411 corresponding to the limit blocks 410. The bottom of the automatic calibration mechanism 4 is fixedly connected with the humidity sensitive element 5.

[0034] like Figure 6 and Figure 7As shown, when the humidity sensor needs to be calibrated, the microprocessor 405 controls the electronic sealing valve 404 to open. The opening of the electronic sealing valve 404 allows the docking tube 403 in the sealed cabin 401 to be connected to the standard humidity source 402. The standard humidity source 402 can provide a known and accurate humidity environment as a calibration reference. At the same time, the drive motor 407 starts to work, and the drive motor 407 drives the screw rod 408 to rotate. The rotation of the screw rod 408 causes the sliding block 409 to slide along the outer wall of the screw rod 408. As the sliding block 409 moves, it pushes the humidity sensitive element 5 to approach the docking tube 403. The two limit blocks 410 on the outer wall of the humidity sensitive element 5 slide along the two limit rods 411 at the end of the docking tube 403. This limit structure ensures that the humidity sensitive element 5 can accurately dock with the docking tube 403, ensuring the accuracy and stability of the docking. When the humidity sensitive element 5 is completely docked with the docking tube 403, the humidity sensitive element 5 can sense the standard humidity environment provided by the standard humidity source 402. After sensing the standard humidity, the humidity sensitive element 5 will transmit the corresponding electrical signal to the microprocessor 405. The microprocessor 405 will compare the received signal with the known humidity value of the standard humidity source 402. According to the deviation value, the microprocessor 405 can adjust the measurement parameters of the humidity sensitive element 5, so that the humidity sensitive element 5 can more accurately reflect the environmental humidity in subsequent actual measurements. After the calibration is completed, the drive motor 407 is reversed, driving the screw rod 408 to rotate in the opposite direction, so that the sliding block 409 returns to the initial position, and the humidity sensitive element 5 also leaves the docking tube 403, and the electronic sealing valve 404 is closed, and the standard humidity source 402 is sealed again in the sealing cabin 401, waiting for the next calibration.

[0035] like Figure 1 and Figure 2 As shown, a signal processing component 6 is installed inside the tank body 1, a connecting line 7 is fixedly connected to the top of the signal processing component 6, a battery 8 is installed inside the tank body 1, and a protective door 9 is rotatably connected to the bottom of the tank body 1.

[0036] The working principle of this embodiment is as follows. The staff can rotate and install the tank body 1 according to the actual installation situation. When the device can be fixedly installed at the specified position, it is only necessary to fix the mounting plate 201 by the fixing screws 202, and then slide the connecting block 207 into the limiting slide groove 206 on the mounting plate 201. After sliding to the specified position, under the elastic force of the limiting spring 204, the limiting ball 205 will pop out and enter the limiting hole opened inside the connecting block 207 to fix the connecting block 207 to complete the installation of the tank body 1. When the target position is not suitable for installing the mounting plate 201, it is only necessary to rotate the buckle 208 inside the connecting block 207 so that the buckle 208 is buckled at the specified position. After the installation work is completed, the humidity sensitive element 5 inside the device will start to monitor the humidity and transmit the monitoring data to the signal processing component 6 through the connecting line 7. The signal processing component 6 analyzes the data. When the data is found to be abnormal, the signal processing component 6 will send a warning signal to notify relevant personnel to take precautions.

[0037] After the device has been working for a long time, the accuracy of the humidity sensitive element 5 will decrease under the influence of the environment. When the set time is reached, the automatic calibration mechanism 4 will be started, and the microprocessor 405 will control the electronic sealing valve 404 and the drive motor 407 to start at the same time. The opening of the electronic sealing valve 404 allows the docking tube 403 in the sealed cabin 401 to be connected with the standard humidity source 402. The standard humidity source 402 can provide a known and accurate humidity environment as a calibration reference. The drive motor 407 will drive the humidity sensitive element 5 to move toward the docking tube 403 until the humidity sensitive element 5 is completely docked with the docking tube 403. The humidity sensitive element 5 can sense the standard humidity environment provided by the standard humidity source 402. The humidity sensitive element 5 senses When the standard humidity is reached, the corresponding electrical signal will be transmitted to the microprocessor 405, and the microprocessor 405 will compare the received signal with the known humidity value of the standard humidity source 402. According to the deviation value, the microprocessor 405 can adjust the measurement parameters of the humidity sensitive element 5, so that the humidity sensitive element 5 can more accurately reflect the ambient humidity in subsequent actual measurements. After the calibration is completed, the drive motor 407 is reversed, driving the screw rod 408 to rotate in the opposite direction, so that the sliding block 409 returns to the initial position, and the humidity sensitive element 5 also leaves the docking tube 403, and the electronic sealing valve 404 is closed, and the standard humidity source 402 is sealed again in the sealed cabin 401, waiting for the next calibration. The staff only needs to regularly replace the battery 8 by opening the protective door 9.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A detachable humidity sensor for risk monitoring, comprising a tank (1), characterized in that: The top of the tank body (1) is provided with a mounting mechanism (2), the outer wall of the tank body (1) is provided with a protection mechanism (3) near the top, the interior of the tank body (1) is provided with an automatic calibration mechanism (4), and the bottom of the automatic calibration mechanism (4) is fixedly connected with a humidity sensitive element (5); A signal processing component (6) is installed inside the tank body (1), a connecting line (7) is fixedly connected to the top of the signal processing component (6), a storage battery (8) is installed inside the tank body (1), and a protective door (9) is rotatably connected to the bottom of the tank body (1).

2. The detachable humidity sensor for risk monitoring according to claim 1, characterized in that: The mounting mechanism (2) comprises a mounting plate (201) mounted on the top of the tank body (1); a plurality of fixing screws (202) are rotatably connected to the bottom of the mounting plate (201); two limiting holes (203) are provided inside the mounting plate (201); limiting springs (204) are fixedly connected inside the two limiting holes (203); the other ends of the two limiting springs (204) are fixedly connected to limiting balls (205); a limiting sliding groove (206) is provided inside the mounting plate (201); a connecting block (207) is fixedly connected to the top of the tank body (1); a buckle (208) is rotatably connected inside the connecting block (207).

3. The detachable humidity sensor for risk monitoring according to claim 2, characterized in that: The outer wall of the connecting block (207) is slidably fitted on the inner wall of the limiting sliding groove (206), and a limiting hole corresponding to the limiting ball (205) is opened inside the connecting block (207).

4. The detachable humidity sensor for risk monitoring according to claim 1, characterized in that: The protection mechanism (3) comprises a protection cover (301) fixedly connected to the outer wall of the tank body (1), the outer wall of the protection cover (301) is provided with a plurality of protection holes (302), and a waterproof and breathable membrane (303) is installed inside the protection cover (301).

5. The detachable humidity sensor for risk monitoring according to claim 1, characterized in that: The automatic calibration mechanism (4) comprises a sealed cabin (401) installed inside the tank body (1); a standard humidity source (402) is installed inside the electronic valve; a butt joint pipe (403) is fixedly connected inside the sealed cabin (401); an electronic sealed valve (404) corresponding to the butt joint pipe (403) is installed inside the sealed cabin (401); a microprocessor (405) is fixedly connected inside the sealed cabin (401); a fixed block (406) is fixedly connected to the top of the sealed cabin (401); a driving motor (407) is fixedly connected inside the fixed block (406); a lead screw (408) is fixedly connected to the output end of the driving motor (407); a sliding block (409) is slidably connected to the outer wall of the lead screw (408); two limit blocks (410) are fixedly connected to the outer wall of the humidity sensitive element (5); and two limit rods (411) corresponding to the limit blocks (410) are fixedly connected to the other end of the butt joint pipe (403).

6. The detachable humidity sensor for risk monitoring according to claim 5, characterized in that: The standard humidity source (402) stores a saturated salt solution inside.

7. The detachable humidity sensor for risk monitoring according to claim 5, characterized in that: The microprocessor (405) is electrically connected to the electronic sealing valve (404) and the driving motor (407) via wires.

8. The detachable humidity sensor for risk monitoring according to claim 5, characterized in that: The humidity sensitive element (5) is fixedly connected to the bottom of the sliding block (409).

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