CN102620750A - Humiture sensor used in low temperature high humidity places - Google Patents
Humiture sensor used in low temperature high humidity places Download PDFInfo
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- CN102620750A CN102620750A CN 201210108652 CN201210108652A CN102620750A CN 102620750 A CN102620750 A CN 102620750A CN 201210108652 CN201210108652 CN 201210108652 CN 201210108652 A CN201210108652 A CN 201210108652A CN 102620750 A CN102620750 A CN 102620750A
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- temperature
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- sensitive element
- sensing element
- heating wire
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Abstract
The invention discloses a humiture sensor used in low temperature high humidity places. The humiture sensor comprises a temperature sensitive element (1), a humidity sensitive element (2) and a heating wire (3); the temperature sensitive element (1), the humidity sensitive element (2) and the heating wire (3) are connected with a signal processing circuit; the temperature sensitive element (1) is individually sealed in a first sealing sleeve (5); and the humidity sensitive element (2) and the heating wire (3) are sealed in a second sealing sleeve (6). According to the humiture sensor provided by the invention, the influence of the heating wire to the temperature sensitive element can be avoided; the detecting precision of a temperature sensor is ensured; thus, the correct identification of the signal processing circuit to a frost point can be ensured; when the actual frost point is closed, the heating wire is started timely to heat so as to avoid surface frosting of a humidity sensor and ensure the detection precision of the humidity sensor; although the structure is simple, the detection precision of the humiture sensor can be effectively improved.
Description
Technical field
The present invention discloses a kind of Temperature Humidity Sensor, and Temperature Humidity Sensor is share in especially a kind of low temperature and high relative humidity field of improving accuracy of detection.
Background technology
In order to guarantee that freezer is in temperature, the humidity that sets all the time, just need temperature sensor, the real-time collecting temperature of humidity sensor, moisture signal, realize monitoring to temperature, humidity.Because freezer is in low temperature (being lower than-20 ℃), high humidity (greater than 90%) state mostly, water vapour is frosting very easily, and once humidity sensor surface frosting, will have a strong impact on the accuracy of detection of humidity.In order to prevent humidity sensor surface frosting, existing Temperature Humidity Sensor is that temperature-sensing element (device), humidity sensing element and heater strip are packaged in the same sealing shroud, and temperature-sensing element (device), humidity sensing element and heater strip all join with signal processing circuit.The temperature that signal processing circuit is responded to sensitive element, moisture signal are handled back output; Supply instrument to show and control, the synchronous signal treatment circuit judges whether to be tending towards frost point according to the temperature that is detected, moisture signal; Close on like frost point, then start heater strip and heat.But; Because temperature-sensing element (device) and heater strip are packaged in one, temperature-sensing element (device) can produce error because of the heating of heater strip, not only influences the accuracy of detection of temperature; But also can influence the correct judgement of signal processing circuit to frost point; And then can not in time start heater strip, and can not thoroughly solve the problem of humidity sensor surface frosting, promptly can not guarantee the accuracy of Humidity Detection.
Summary of the invention
The present invention is in order to solve the above-mentioned technical matters of existing in prior technology, to provide a kind of low temperature and high relative humidity field of improving accuracy of detection to share Temperature Humidity Sensor.
Technical solution of the present invention is: Temperature Humidity Sensor is share in a kind of low temperature and high relative humidity field; Temperature-sensing element (device), humidity sensing element and heater strip are arranged; Temperature-sensing element (device), humidity sensing element and heater strip all join with signal processing circuit; Said temperature-sensing element (device) is packaged in separately in first sealing shroud, and humidity sensing element and heater strip are packaged in second sealing shroud.
The present invention can avoid the influence of heater strip to temperature-sensing element (device), has guaranteed the accuracy of detection of temperature sensor, thereby guarantees the correct judgement of signal processing circuit to frost point; When actual frost point closes on; In time start heater strip and heat, avoid humidity sensor surface frosting, guarantee the accuracy of detection of humidity sensor; Though simple in structure, can effectively improve the accuracy of detection of Temperature Humidity Sensor.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Below with accompanying drawings embodiment of the present invention.As shown in Figure 1: identical with prior art; Temperature-sensing element (device) 1, humidity sensing element 2 and heater strip 3 are arranged; Temperature-sensing element (device) 1, humidity sensing element 2 and heater strip 3 all join with signal processing circuit; Different is that temperature-sensing element (device) 1 is packaged in separately in first sealing shroud 5 with prior art, and humidity sensing element 2 and heater strip 3 are packaged in second sealing shroud 6.
Claims (1)
1. Temperature Humidity Sensor is share in a low temperature and high relative humidity field; Temperature-sensing element (device) (1), humidity sensing element (2) and heater strip (3) are arranged; Temperature-sensing element (device) (1), humidity sensing element (2) and heater strip (3) all join with signal processing circuit; It is characterized in that: said temperature-sensing element (device) (1) is packaged in separately in first sealing shroud (5), and humidity sensing element (2) and heater strip (3) are packaged in second sealing shroud (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210108652 CN102620750A (en) | 2012-04-15 | 2012-04-15 | Humiture sensor used in low temperature high humidity places |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210108652 CN102620750A (en) | 2012-04-15 | 2012-04-15 | Humiture sensor used in low temperature high humidity places |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102620750A true CN102620750A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210108652 Pending CN102620750A (en) | 2012-04-15 | 2012-04-15 | Humiture sensor used in low temperature high humidity places |
Country Status (1)
| Country | Link |
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| CN (1) | CN102620750A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675405A (en) * | 2013-11-12 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | Online monitoring system capable of monitoring transformer core grounding current at extremely low temperature |
| CN111336774A (en) * | 2020-02-28 | 2020-06-26 | 维沃移动通信有限公司 | Electronic equipment dehumidification method and electronic equipment |
| CN111351521A (en) * | 2018-12-21 | 2020-06-30 | 浙江三花智能控制股份有限公司 | Temperature and humidity sensor module and heating control method thereof |
-
2012
- 2012-04-15 CN CN 201210108652 patent/CN102620750A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675405A (en) * | 2013-11-12 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | Online monitoring system capable of monitoring transformer core grounding current at extremely low temperature |
| CN111351521A (en) * | 2018-12-21 | 2020-06-30 | 浙江三花智能控制股份有限公司 | Temperature and humidity sensor module and heating control method thereof |
| CN111336774A (en) * | 2020-02-28 | 2020-06-26 | 维沃移动通信有限公司 | Electronic equipment dehumidification method and electronic equipment |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |