CN203366498U - Formaldehyde detection apparatus - Google Patents
Formaldehyde detection apparatus Download PDFInfo
- Publication number
- CN203366498U CN203366498U CN 201320398014 CN201320398014U CN203366498U CN 203366498 U CN203366498 U CN 203366498U CN 201320398014 CN201320398014 CN 201320398014 CN 201320398014 U CN201320398014 U CN 201320398014U CN 203366498 U CN203366498 U CN 203366498U
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- formaldehyde
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- output terminal
- amplification circuit
- alarm
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Abstract
The utility model discloses a formaldehyde detection apparatus including a formaldehyde sensor, a constant-current device, a high-precision amplification circuit, a spectral detection device, an A/D converter, a controller, a display and an alarm. An output end of the formaldehyde sensor is connected with an input end of the constant-current device. An output end of the constant-current device is connected with an input end of the high-precision amplification circuit. An output end of the high-precision amplification circuit is connected with an input end of the spectral detection device. An output end of the spectral detection device is connected with an input end of the A/D converter. An output end of the A/D converter is connected with an input end of the controller. Output ends of the controller are connected with the display and the alarm respectively. A formaldehyde content can be effectively detected through the formaldehyde detection apparatus and when the formaldehyde content reaches a limit value, the alarm sends an early warning so that the apparatus is capable of reminding people to carry out preventative measures in the first time and playing an excellent role to health of human bodies.
Description
Technical field
The utility model relates to a kind of formaldehyde examination device, belongs to the detection technique field.
Background technology
At present, be applied to inevitably can contain formaldehyde in the material of house decoration, and formaldehyde is a kind of carcinogen, also a kind of inducement simultaneously, can induce an illness, long-term inhaled formaldehyde not only can reduce body immunity but also can affect the normal various functions of people, formaldehyde is very large on upper respiratory tract impact, the formaldehyde of high concentration can cause dazzling pungent symptom, therefore, if daily life not in time the concentration of PARA FORMALDEHYDE PRILLS(91,95) detected and taked control measure, the harm that human body is caused will can't neglect.
The utility model content
For addressing the above problem, the utility model proposes a kind of formaldehyde examination device that can high precision detects formaldehyde.
Formaldehyde examination device of the present utility model, comprise formaldehyde sensor, constant-current device, high-precision amplification circuit, minute optical detection device, A/D converter, controller, display and alarm; The output terminal of described formaldehyde sensor is connected with the input end of constant-current device; The output terminal of described constant-current device is connected with the input end of high-precision amplification circuit; The output terminal of described high-precision amplification circuit is connected with the input end of minute optical detection device; The output terminal of described minute optical detection device is connected with the input end of A/D converter; The output terminal of described A/D converter is connected with the input end of controller; The output terminal of described controller is connected with alarm with display respectively.
As preferably, described high-precision amplification circuit comprises the two-stage amplifying circuit.
As preferably, described controller adopts single-chip microcomputer.
As preferably, described display adopts LED display.
As preferably, described alarm comprises pilot lamp warning horn and audible alarm.
Formaldehyde examination device of the present utility model, can effectively detect the content of formaldehyde by the formaldehyde examination device, when the content of formaldehyde reaches limit value, alarm will send early warning, can remind people to carry out preventive measure in the very first time, health to human body plays a good role, and the testing staff can directly find out the content of objectionable impurities by display, and this device accuracy of detection is high, simple in structure, easy to operate.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
A kind of formaldehyde examination device as shown in Figure 1, comprise formaldehyde sensor 1, constant-current device 2, high-precision amplification circuit 3, minute optical detection device 4, A/D converter 5, controller 6, display 7 and alarm 8; The output terminal of described formaldehyde sensor 1 is connected with the input end of constant-current device 2; The output terminal of described constant-current device 2 is connected with the input end of high-precision amplification circuit 3; The output terminal of described high-precision amplification circuit 3 is connected with the input end of minute optical detection device 4; The output terminal of described minute optical detection device 4 is connected with the input end of A/D converter 5; The output terminal of described A/D converter 5 is connected with the input end of controller 6; The output terminal of described controller 6 is connected with alarm 8 with display 7 respectively.
It should be noted that described high-precision amplification circuit 3 comprises the two-stage amplifying circuit; Described controller 6 adopts single-chip microcomputer; Described display 7 adopts LED display; Described alarm 8 comprises pilot lamp warning horn and audible alarm.
Formaldehyde examination device of the present utility model, can effectively detect the content of formaldehyde by the formaldehyde examination device, when the content of formaldehyde reaches limit value, alarm will send early warning, can remind people to carry out preventive measure in the very first time, health to human body plays a good role, and the testing staff can directly find out the content of objectionable impurities by display, and this device accuracy of detection is high, simple in structure, easy to operate.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Under the prerequisite that does not break away from the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents that the utility model is asked for protection, all be documented in claims.
Claims (5)
1. a formaldehyde examination device, is characterized in that: comprise formaldehyde sensor, constant-current device, high-precision amplification circuit, minute optical detection device, A/D converter, controller, display and alarm; The output terminal of described formaldehyde sensor is connected with the input end of constant-current device; The output terminal of described constant-current device is connected with the input end of high-precision amplification circuit; The output terminal of described high-precision amplification circuit is connected with the input end of minute optical detection device; The output terminal of described minute optical detection device is connected with the input end of A/D converter; The output terminal of described A/D converter is connected with the input end of controller; The output terminal of described controller is connected with alarm with display respectively.
2. formaldehyde examination device according to claim 1, it is characterized in that: described high-precision amplification circuit comprises the two-stage amplifying circuit.
3. formaldehyde examination device according to claim 1, is characterized in that: described controller employing single-chip microcomputer.
4. formaldehyde examination device according to claim 1, is characterized in that: described display employing LED display.
5. formaldehyde examination device according to claim 1, it is characterized in that: described alarm comprises pilot lamp warning horn and audible alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320398014 CN203366498U (en) | 2013-07-05 | 2013-07-05 | Formaldehyde detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320398014 CN203366498U (en) | 2013-07-05 | 2013-07-05 | Formaldehyde detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203366498U true CN203366498U (en) | 2013-12-25 |
Family
ID=49814231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320398014 Expired - Lifetime CN203366498U (en) | 2013-07-05 | 2013-07-05 | Formaldehyde detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203366498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181318A (en) * | 2014-09-01 | 2014-12-03 | 河北中康韦尔环境科技有限公司 | Online formaldehyde concentration detection device applicable to air purifier |
-
2013
- 2013-07-05 CN CN 201320398014 patent/CN203366498U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181318A (en) * | 2014-09-01 | 2014-12-03 | 河北中康韦尔环境科技有限公司 | Online formaldehyde concentration detection device applicable to air purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |