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Simple portable formaldehyde detector

A formaldehyde detector and simple technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of poor detection accuracy and cannot represent the average concentration, etc., and achieve the effects of long standby time, reduced volume, and accurate testing.

Inactive Publication Date: 2018-05-04
HARBIN EAST ALARM EQUIP DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The individual is relatively large, and cannot be well applied in many places. If it is used in the car for a long time, it will be very troublesome.
[0007] 2. Formaldehyde detectors can only be placed at present. Formaldehyde is slightly heavier than air, and the ground should not represent the average concentration of the entire space.
[0008] 3. At present, most of the formaldehyde detection in the market is a semiconductor sensor, and the detection accuracy is extremely poor. It responds to all gases and cannot qualitatively detect whether it is formaldehyde gas.

Method used

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  • Simple portable formaldehyde detector
  • Simple portable formaldehyde detector
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A simple and portable formaldehyde detector, including a housing; it is characterized in that: the housing includes an upper housing 2 and a lower housing 5; the housing is provided with a battery 3, a main control circuit board, a gas sensor, Alarm device; the main control circuit board is respectively connected to the battery 3, the gas sensor and the alarm device; the housing is provided with an air inlet 10 corresponding to the gas sensor.

[0027] A sealing rubber ring 2 is provided at the joint between the upper casing 2 and the lower casing 5 .

[0028] A USB port 9 is provided on the side of the housing, and the USB port 9 is connected to the main control circuit board.

[0029] A button 4 is arranged on the front of the housing, and the button 4 is connected to the main control circuit board.

[0030] The gas sensor adopts formaldehyde electrochemical sensor.

Embodiment 2

[0032] The working principle of the present invention: the present invention collects the experimental gas through the air inlet 10. Because of its small size and easy portability, it is convenient to detect the gas structure in a small space, and it is also convenient to detect the gas structure around the human body and in the breathing of the human body; the shell of the present invention The air inlet 10 and the air outlet 8 in the body can form a good air circulation, effectively prevent gas from stagnating, and ensure accurate detection results. The invention has simple results, is easy to produce and process, and is convenient for mass production.

Embodiment 3

[0034] In the present invention, the housing can be provided with an LED display device, and the gas sensor transmits the collected data to the main control circuit board through the LDO power supply, analog signal processor and A / D, and the main control circuit board adopts an MCU chip.

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Abstract

The invention discloses a simple portable formaldehyde detector. The simple portable formaldehyde detector comprises a housing, and is characterized in that the housing comprises an upper housing anda lower housing; a battery, a master control circuit board, a gas sensor and an alarm device are arranged in the housing; the master control circuit board is connected with each of the battery, the gas sensor and the alarm device; a gas inlet is formed in the housing; the gas inlet corresponds to the gas sensor. The simple portable formaldehyde detector further reduces the volume of the detector,so that the detector is simple and portable. The simple portable formaldehyde detector can support a plurality of using modes, such as hand holding, placing and suspending. Particularly, the simple portable formaldehyde detector can detect the formaldehyde content in human body breathing more accurately in the mode of suspending, and can be suspended to use in a vehicle. According to the simple portable formaldehyde detector, an electrochemical sensor is used, and the overall precision and the gas directivity are greatly better than those of a semiconductor sensor.

Description

technical field [0001] The invention relates to a gas detection device, in particular to a simple and portable formaldehyde detector. Background technique [0002] Formaldehyde, which is harmful to the human body in daily life, can be said to be everywhere. The items involved include furniture, wooden floors; children's clothing, non-ironing shirts; fast food noodles, rice noodles; blistered squid, sea cucumbers, beef louvers, shrimps; and even cars. It is not difficult to see that formaldehyde has been involved in all four of the most important things in our lives—clothing, food, housing, and transportation. The ubiquitous formaldehyde makes people worry. [0003] The problem of formaldehyde pollution is mainly concentrated in the living room, textiles and food. Plywood, fiberboard, particle board and other man-made panels in room decoration materials and furniture contain a large amount of formaldehyde-based urea-formaldehyde resin, and various paints and coatings contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
CPCG01N27/26
Inventor 刘继龙毛飞王锡铜
Owner HARBIN EAST ALARM EQUIP DEV