一种颗粒物传感器的自适应自动标定装置
By designing an adaptive automatic calibration device, the detection accuracy problem caused by hardware differences in the production process of infrared particulate matter sensors was solved, achieving higher detection accuracy and lower defect rate, thus improving product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TOMOHO SENSOR TECH CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, infrared particulate matter sensors suffer from hardware differences due to variations in materials and processing techniques during the production process, which affects the product yield. Furthermore, calibration and detection are inaccurate under different environments, affecting detection accuracy.
An adaptive automatic calibration device for particulate matter sensors was designed, comprising components such as a temperature control box, a host computer, a display, a blower, a smoke generator, a diffuser tube, and a fixing plate. By adjusting the temperature and air concentration, the sensor can be adaptively calibrated, thereby improving detection accuracy and reducing the defect rate.
The adaptive automatic calibration device improves the detection accuracy of particulate matter sensors, reduces the defect rate, and enhances the stability and consistency of product quality.
Smart Images
Figure CN224518451U_ABST
Abstract
Claims
1. An adaptive automatic calibration device for a particulate matter sensor, comprising a temperature control box (1), a host computer (4), a display (5), a blower (10), a smoke generator (11), a diffuser (19), a fixing plate (17), and a mounting plate (32), wherein the temperature control box (1) has an opening, a door (2) is provided on the opening of the temperature control box (1), and a temperature controller (6) is provided on the temperature control box (1) to regulate the temperature inside the temperature control box (1), characterized in that: A host computer (4) and a display (5) are provided on one side of the temperature control box (1). The host computer (4) and the display (5) are electrically connected. A blower (10) is provided on the other side of the temperature control box (1). The blower (10) has a first air inlet pipe (12) and a second air inlet pipe (14) at its air outlet. A smoke generator (11) is provided on the first air inlet pipe (12). A longitudinally arranged diverging pipe (19) is provided in the middle of the temperature control box (1). Smoke exhaust holes (26) are distributed on the diverging pipe (19). The first air inlet pipe (12) and the second air inlet pipe (14) are both connected to the diverging pipe (19). A horizontally arranged... A fixing plate (17) is provided with a first socket (31), which is electrically connected to the host computer (4). Each fixing plate (17) is provided with a horizontally arranged mounting plate (32), and a first plug (33) is provided at the end of the mounting plate (32). The first plug (33) is electrically connected to the first socket (31). The particle sensor to be detected is fixed on the upper surface of the mounting plate (32). Second plugs (35) are distributed on the upper surface of the mounting plate (32). Each second plug (35) is electrically connected to the first plug (33), and each second plug (35) is electrically connected to the socket of each particle sensor.
2. The self-adapting auto-calibration device of particulate matter sensor according to claim 1, wherein: The temperature control box (1) has four support legs (9) distributed at the four corners of its lower end face. The box door (2) is hinged to the opening of the temperature control box (1). The box door (2) is provided with an observation window (3).
3. The self-adapting auto-calibration device of particulate matter sensor according to claim 2, wherein: The upper end of the temperature control box (1) is provided with an air extractor (7) connected to it. The air inlet end of the air extractor (7) is provided with an internal valve (16), and the exhaust end of the air extractor (7) is provided with an exhaust pipe (8).
4. The self-adapting auto-calibration apparatus of particulate matter sensor according to claim 1, wherein: The first intake pipe (12) is equipped with a first solenoid valve (13), and the second intake pipe (14) is equipped with a second solenoid valve (15). Both the first solenoid valve (13) and the second solenoid valve (15) are electrically connected to an external controller.
5. The self-adapting auto-calibration apparatus of particulate matter sensor according to claim 1, wherein: The diverging pipe (19) has a longitudinally arranged groove (27) on its side. A partition (20) is provided inside the diverging pipe (19). The partition (20) is located below the groove (27). Perforations (21) are distributed on the partition (20). The first air inlet pipe (12) and the second air inlet pipe (14) are both located below the partition (20).
6. The self-adapting auto-calibration device of particulate matter sensor according to claim 3, wherein: The temperature control box (1) is equipped with a motor (25) at the bottom. The output shaft of the motor (25) extends upward through the temperature control box (1). The output shaft of the motor (25) is equipped with a longitudinally arranged connecting shaft (22). The upper end of the connecting shaft (22) passes through the partition (20) and is rotatably connected to the partition (20). Stirring rods (23) are distributed on the side of the connecting shaft (22).
7. The self-adapting auto-calibration device of particulate matter sensor according to claim 6, wherein: The upper end of the connecting shaft (22) is provided with a longitudinally arranged reciprocating screw (24). The upper end of the reciprocating screw (24) is rotatably connected to the top surface of the inner wall of the diverging tube (19). The reciprocating screw (24), the connecting shaft (22) and the diverging tube (19) are coaxially arranged. The reciprocating screw (24) is provided with a sleeve (28). The sleeve (28) is threadedly connected to the reciprocating screw (24). The side of the sleeve (28) is provided with a connecting rod (29). One end of the connecting rod (29) is connected to the side of the sleeve (28). The other end of the sleeve (28) passes through the sliding groove (27) and is provided with a collar (30). The collar (30) is fitted on the diverging tube (19). The end of the connecting rod (29) is connected to the inner wall of the collar (30). The inner wall of the collar (30) is distributed with bristles.
8. The self-adapting auto-calibration apparatus of particulate matter sensor according to claim 1, wherein: One side of the fixing plate (17) is connected to the inner wall of the temperature control box (1), and the other side of the fixing plate (17) is provided with a horizontally arranged groove. One end of the mounting plate (32) is set in the groove of the fixing plate (17). Spring clips (18) are distributed on the top and bottom surfaces of the groove of the fixing plate (17). The first socket (31) is set on the inner wall of the groove of the fixing plate (17).
9. The self-adapting auto-calibration device of particulate matter sensor according to claim 8, wherein: The mounting plate (32) is provided with a first plug (33) at its end. The upper and lower surfaces of the mounting plate (32) are provided with fixing holes (36). The fixing holes (36) are correspondingly provided with spring clips (18). The lower surface of the mounting plate (32) is provided with a support plate (34). One end of the support plate (34) abuts against the inner wall of the temperature control box (1).