CN204788479U - Humiture detector is piled to grain - Google Patents
Humiture detector is piled to grain Download PDFInfo
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- CN204788479U CN204788479U CN201520485616.2U CN201520485616U CN204788479U CN 204788479 U CN204788479 U CN 204788479U CN 201520485616 U CN201520485616 U CN 201520485616U CN 204788479 U CN204788479 U CN 204788479U
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- humiture detector
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Abstract
The utility model discloses a humiture detector is piled to grain, including ventilative casing with install the sensor circuit in the casing inner chamber, sensor circuit includes the circuit board, the circuit board includes the PCB board and fixes the temperature and humidity sensor chip on the PCB board, the surface of temperature and humidity sensor chip covers the ventilative film of polymer selectivity, and other circuit component's surface covers the anti -corrosion coating of epoxy on PCB board and the PCB board. The utility model discloses the ventilative film of polymer selectivity and the anti -corrosion coating of epoxy that cover on the humiture detector is piled to grain circuit board have the stifling performance of anti hydrogen phosphate, can not corroded by hydrogen phosphate by the protection circuit board, the accurate humiture that detects grain and pile the each point of being convenient for.
Description
[technical field]
The grain feelings that the utility model relates to foodstuff preservation detect, and particularly relate to a kind of grain heap humiture detector.
[background technology]
The existing silo of China all generally have employed grain feelings temp measuring system, several temperature sensor is encapsulated in one with in the cable of steel wire according to different spacing, form the cable for measuring temperature that can be born certain pulling force, then imbed in grain heap, again the cable for measuring temperature order wire that some are imbedded grain heap is connected to a detection extension set, by extension set, detection data are sent to main frame to process, thus obtain grain stack temperature distribution and variation situation.Due to existing grain inspection system, the temperature data of grain heap point position can only be detected and the humidity data that grain is piled cannot be detected, also the balance water fraction data and dew point data that obtain grain heap each point cannot be detected, so existing grain inspection system is only grain heap temp measuring system, function singleness, can not reflect that the comprehensive grain situation conditions such as warm and humid water piled by grain comprehensively, bring hidden trouble to stored grain safety.
Because humidity sensor need contact with the air detecting position, can not be encapsulated in cable and imbed grain heap together with cable for measuring temperature, but be inserted into humidity sensor in grain heap owing to can not resist phosphine fumigation cannot Long-Time Service, causing grain to pile Humidity Detection and be in blank always, is that generally acknowledged grain feelings detect a difficult problem and effectively do not solved.
At present, grain heap moisture content detects and needs manually to on-site sampling, and operate very loaded down with trivial details and consuming time, whole process also cannot realize robotization.But theoretical and experiment all confirms, the temperature and humidity that certain point piled by grain has basic corresponding funtcional relationship with balance moisture content, therefore can obtain corresponding balance moisture content by the method accurately detecting grain stack temperature and humidity, this balance moisture content just piled for grain detects and provides easy and method and access that is that easily be automated.Simultaneously, the humiture detecting grain heap each point can also obtain the dew point of corresponding point, understand grain heap internal condensation situation, this just provides the distribution and migration situation of change of grain heap humiture and moisture content and condensation for modern grain heap intelligent aeration and drying generator technology, is conducive to correspondence and takes different ventilation technics patterns to reach energy-conservation impairment and object safely and efficiently.Therefore the humiture accurately detecting grain heap each point seems very important and urgent.
For the blank that current grain heap humidity, balance moisture content and dew point detect, research and develop grain heap humiture observation system accurately and reliably, accurate grasp grain stack temperature humidity and moisture content and the changes in distribution rule that condenses, comprehensive grasp grain heap grain situation condition, prediction grain feelings development trend is the essential condition ensureing stored grain safety and grain storage New technical use.
The core of grain heap humiture observation system, must have the grain heap humiture detector of the anti-phosphine fumigation of energy exactly.
[summary of the invention]
The technical problems to be solved in the utility model is to provide a kind of energy anti-phosphine fumigation grain heap humiture detector.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of grain heap humiture detector, comprise ventilative housing and be arranged on the sensor circuit in housing cavity, sensor circuit comprises circuit board, and circuit board comprises pcb board and is fixed on the Temperature Humidity Sensor chip on pcb board; The outside surface of Temperature Humidity Sensor chip covers macromolecule selectivity breathable films, the outside surface cover ring epoxy resins anti-corrosion coating of other circuit components on pcb board and pcb board.
Above-described grain heap humiture detector, comprise filter screen, housing is tubulose, comprises sidewall and end plate; Pcb board is strip, and Temperature Humidity Sensor chip layout is in the front end of pcb board; The sidewall of housing front portion comprises a plurality of longitudinal flutings, longitudinal fluting leads to the front end of housing, and the bottom land of longitudinal fluting comprises air hole; Filter screen is tubular, is arranged in the front portion of housing cavity, covers the air hole in housing sidewall; The front portion of circuit board is inserted in filter screen.
Above-described grain heap humiture detector, the end plate of housing comprises a plurality of air hole, and filter screen comprises base plate, and the base plate of filter screen covers the air hole on end plate.
Above-described grain heap humiture detector, the air hole in housing sidewall is prolate hole; Longitudinal fluting is uniform along the circumference of housing.
Above-described grain heap humiture detector, housing comprises front cap, middle pipe and bonnet, and middle Guan Yuqian cap, bonnet adopt respectively and be threaded, and described longitudinal fluting is positioned on the sidewall of front cap, and described filter screen is arranged in the inner chamber of front cap.
Above-described grain heap humiture detector, described macromolecule selectivity breathable films is nanofiltration membrane.
Above-described grain heap humiture detector, bonnet comprises cable hole, through the data cable of circuit board in cable hole, is equipped with to seal cable hole in the inner chamber of bonnet, and passes the plug of data cable.
The macromolecule selectivity breathable films that the utility model grain heap humiture detector circuit plate covers and epoxy resin anti-corrosion coating, have anti-phosphine fumigation performance, can not corrode by hydrogen phosphide by protection circuit plate, be convenient to the humiture accurately detecting grain heap each point.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the front view of the utility model embodiment grain heap humiture detector.
Fig. 2 is that A in Fig. 1 is to cut-open view.
Fig. 3 is the right view of the utility model embodiment grain heap humiture detector.
Fig. 4 is the partial enlarged drawing at I position in Fig. 2.
[embodiment]
The utility model embodiment grain piles the structure of humiture detector as shown in Figures 1 to 4, the sensor circuit comprising ventilative housing 100, filter screen 8 and be arranged in housing 100 inner chamber.
Sensor circuit comprises circuit board and data cable 9, the Temperature Humidity Sensor chip 2 that circuit board comprises pcb board 1 and is fixed on pcb board 1.Pcb board 1 is strip, and Temperature Humidity Sensor chip 2 is arranged in the front end of pcb board 1.
The outside surface of Temperature Humidity Sensor chip 2 covers one deck macromolecule selectivity breathable films 3, and on pcb board 1 and pcb board 1, the outside surface of other circuit components is covered with one deck epoxy resin anti-corrosion coating 4.
The macromolecule selectivity breathable films of Temperature Humidity Sensor chip 2 surface coverage, has anti-phosphine fumigation performance.Chip 2 inside comprises relative humidity sensor, temperature sensor, amplifier, 14 A/D converters, calibration storage (E2PROM), volatile storage (RAM), status register, cyclic redundancy check (CRC) code (CRC) register, two-wire serial interface, control module, well heater and low-voltage detection circuits.The circuit such as signal amplifier, A/D converter, calibration data memory, standard I 2C bus are all integrated in a chip 2, there is automatic calibration, automatically low voltage test and anti-drift performance.Sensor is connected with the A/D converter of 14, can give two wires I2C bus device, thus digital signal is converted to the serial digital signal meeting I2C bus protocol by the warm and humid angle value of numeral after conversion.Serial digital signal is drawn by data cable 9.
Housing 100 is tubulose, comprises front cap 5, middle pipe 6 and bonnet 7, and middle pipe 6 adopts respectively with front cap 5, bonnet 7 and is threaded.Circuit board is arranged in the inner chamber of front cap 5, middle pipe 6 and bonnet 7 formation, and data cable 9 is drawn from the through hole of bonnet 7, and the through hole in order to rear sealing cover 7 is housed in the inner chamber of bonnet, through the plug 10 of data cable 9.
The sidewall of front cap 5 has 8 along the uniform longitudinal fluting 501 of front cap circumference, longitudinal fluting 501 leads to the front end of front cap 5, and the bottom land of longitudinal fluting 501 has the air hole 502 of a prolate.Groove 501 can play the anti-blocking effect of prolate air hole 502.
Filter screen 8 is tubular, is arranged in the inner chamber of front cap 5, covers the air hole on front cap 5 sidewall.The order number of filter screen 8 is 128 orders, has the performance of the anti-dust of anti-condensation.
The end plate of front cap 5 front end has 9 air holes 503, and the base plate of filter screen 8 covers the air hole 503 on end plate.
The front portion of pcb board 1 is inserted in the inner chamber of filter screen 8, and Temperature Humidity Sensor chip 2 is surrounded by filter screen 8.
Wherein, macromolecule selectivity breathable films 3 can adopt nanofiltration membrane.
The macromolecule selectivity breathable films that the utility model grain heap humiture detector circuit plate covers and epoxy resin anti-corrosion coating, have anti-phosphine fumigation performance, can not corrode by hydrogen phosphide by protection circuit plate, be convenient to the humiture accurately detecting grain heap each point.
Claims (7)
1. a grain heap humiture detector, comprise ventilative housing and be arranged on the sensor circuit in housing cavity, it is characterized in that, sensor circuit comprises circuit board, and circuit board comprises pcb board and is fixed on the Temperature Humidity Sensor chip on pcb board; The outside surface of Temperature Humidity Sensor chip covers macromolecule selectivity breathable films, the outside surface cover ring epoxy resins anti-corrosion coating of other circuit components on pcb board and pcb board.
2. grain heap humiture detector according to claim 1, it is characterized in that, comprise filter screen, housing is tubulose, comprises sidewall and end plate; Pcb board is strip, and Temperature Humidity Sensor chip layout is in the front end of pcb board; The sidewall of housing front portion comprises a plurality of longitudinal flutings, longitudinal fluting leads to the front end of housing, and the bottom land of longitudinal fluting comprises air hole; Filter screen is tubular, is arranged in the front portion of housing cavity, covers the air hole in housing sidewall; The front portion of circuit board is inserted in filter screen.
3. grain heap humiture detector according to claim 2, it is characterized in that, the end plate of housing comprises a plurality of air hole, and filter screen comprises base plate, and the base plate of filter screen covers the air hole on end plate.
4. grain heap humiture detector according to claim 2, it is characterized in that, the air hole in housing sidewall is prolate hole; Longitudinal fluting is uniform along the circumference of housing.
5. grain heap humiture detector according to claim 2, it is characterized in that, housing comprises front cap, middle pipe and bonnet, and middle Guan Yuqian cap, bonnet adopt respectively and be threaded, described longitudinal fluting is positioned on the sidewall of front cap, and described filter screen is arranged in the inner chamber of front cap.
6. grain heap humiture detector according to claim 1, it is characterized in that, described macromolecule selectivity breathable films is nanofiltration membrane.
7. grain heap humiture detector according to claim 5, it is characterized in that, bonnet comprises cable hole, through the data cable of circuit board in cable hole, is equipped with to seal cable hole in the inner chamber of bonnet, and passes the plug of data cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485616.2U CN204788479U (en) | 2015-07-07 | 2015-07-07 | Humiture detector is piled to grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485616.2U CN204788479U (en) | 2015-07-07 | 2015-07-07 | Humiture detector is piled to grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204788479U true CN204788479U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520485616.2U Active CN204788479U (en) | 2015-07-07 | 2015-07-07 | Humiture detector is piled to grain |
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| CN (1) | CN204788479U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871973A (en) * | 2017-04-21 | 2017-06-20 | 佛山市川东磁电股份有限公司 | A kind of Temperature Humidity Sensor |
| CN107193238A (en) * | 2017-07-07 | 2017-09-22 | 四川忆思科技有限公司 | A kind of built-in temperature-humidity detecting device |
| KR101876641B1 (en) * | 2016-11-11 | 2018-07-09 | 박지성 | the protective device of hygrometer against high-humidity |
-
2015
- 2015-07-07 CN CN201520485616.2U patent/CN204788479U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101876641B1 (en) * | 2016-11-11 | 2018-07-09 | 박지성 | the protective device of hygrometer against high-humidity |
| CN106871973A (en) * | 2017-04-21 | 2017-06-20 | 佛山市川东磁电股份有限公司 | A kind of Temperature Humidity Sensor |
| WO2018192062A1 (en) * | 2017-04-21 | 2018-10-25 | 佛山市川东磁电股份有限公司 | Temperature-humidity sensor |
| CN107193238A (en) * | 2017-07-07 | 2017-09-22 | 四川忆思科技有限公司 | A kind of built-in temperature-humidity detecting device |
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