CN201796004U - Intelligent humidometer - Google Patents
Intelligent humidometer Download PDFInfo
- Publication number
- CN201796004U CN201796004U CN2010205455053U CN201020545505U CN201796004U CN 201796004 U CN201796004 U CN 201796004U CN 2010205455053 U CN2010205455053 U CN 2010205455053U CN 201020545505 U CN201020545505 U CN 201020545505U CN 201796004 U CN201796004 U CN 201796004U
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- humidity
- circuit
- transmission line
- chip microcomputer
- serial port
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Abstract
The utility model discloses an intelligent humidometer which is characterized by comprising a humidity measuring system, a data processing system, a humidity real-time display system, an alarming system, a wireless transmission system, a singlechip, a serial port circuit and a computer display humidity curve system, wherein the humidity measuring system consists of a DHT90 humidity sensor, the data processing system consists of an MSP430 singlechip and is connected with the humidity measuring system by a transmission line, the humidity real-time display system consists of an LCD (Liquid Crystal Display) 1602 and is connected with the data processing system by a transmission line, the alarming system consists of a buzzer circuit and is connected with the data processing system by a transmission line, the wireless transmission system consists of a transmitting circuit and a receiving circuit and is connected with the data processing system by a transmission line, the singlechip and the serial port circuit consist of the singlechip, an MAX 3223 interface electrical level conversion chip and RS-232 serial port communication and are connected with the wireless transmission system by a transmission line, and the computer display humidity curve system consists of a computer and is connected with the singlechip and the serial port circuit. The intelligent humidometer has the advantage of low power consumption.
Description
Technical field
The utility model is a kind of humidity sensor, the intelligent humidity meter of the measurement humidity of technology such as specifically a kind of employing wireless transmission circuit.
Background technology
As everyone knows, humidity is a very important physical parameter, is widely used at aspects such as oil development, Chemical Manufacture, scientific researches.Yet, therefore also become a parameter that relatively is difficult to accurate measurement because humidity is subjected to the influence of factors such as air pressure, environment temperature bigger.Though make humidity measuring method bigger improvement arranged than traditional measurements such as wet and dry bulbs with analog electronics humidity sensor, but analog electronics humidity sensor still is apparent not enough at aspects such as the linearity, repeatability, interchangeability, consistance, not only need modelled signal modulate circuit, analog to digital conversion circuit etc. in the practical process, and need through complicated calibration, calibration process, the performance history complexity, cost is higher.The digital humidity sensor that the various microprocessors that occur in recent years constitute, in many application, not only require high performance numeral to show that the industrial instrumentation great majority are operated in the field environment, power supply mode is cumbersome, so that the power consumption of instrument reduces as much as possible is very important.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned the deficiencies in the prior art, a kind of intelligent humidity meter based on technology such as super low power consuming single chip processor MSP430, DHT90 monolithic intelligence sensor, nRF905 wireless transmission circuits to be provided.
The utility model can reach by following measure:
A kind of intelligent humidity meter, it is characterized in that comprising the hygrometric system, data handling system, the humidity real-time display system, warning system, wireless transmitting system, single-chip microcomputer and serial port circuit, computer shows the moisture curve system, wherein the hygrometric system is made up of the DHT90 humidity sensor, data handling system is made up of through transmission line the MSP430 single-chip microcomputer and is connected with the hygrometric system, the humidity real-time display system is made up of through transmission line LCD1602 and is connected with data handling system, warning system is made up of through transmission line buzzer circuit and is connected with data handling system, wireless transmitting system is made up of through transmission line transtation mission circuit and receiving circuit and is connected with data handling system, single-chip microcomputer is made up of through transmission line with the RS-232 serial communication with MAX3223 interface level conversion chip single-chip microcomputer with serial port circuit and is connected with wireless transmitting system, and computer shows that the moisture curve system is made up of computer and is connected with serial port circuit with single-chip microcomputer.
Hygrometric of the present utility model system is made up of the DHT90 humidity sensor, the DHT90 humidity sensor is a humidity compound sensor of calibrating digital signal output that contains, comprise capacitive character condensate humidity sensing element, A/D converter and serial interface circuit etc., ambient humidity is detected in real time, and the signal that will detect in real time is sent to data handling system through transmission line and handles.
Data handling system of the present utility model is made up of the MSP430F449 single chip circuit, the MSP430F449 single-chip microcomputer has a serial communication interface, a basic timer, two 16 bit timing devices, house dog, an analog voltage comparator, the ADC12 analog-to-digital conversion module, the LCD liquid crystal driver module, the voltage signal of DHT90 humidity sensor output imports into by the A1 passage of ADC12 analog-to-digital conversion module on the MSP430F449 single-chip microcomputer, in the ADC12 module signal is gathered and to be converted to digital signal then, through corresponding software algorithm digital signal is converted to humidity value, show by the LCD liquid crystal driver module on the sheet at last by single-chip microcomputer.
Humidity real-time display system of the present utility model is made up of LCD1602, shows the humidity value by data handling system output in real time.
Warning system of the present utility model is made of the buzzer alarm circuit that is connected a pin of single-chip microcomputer, and when humidity was higher than the humidity threshold value of setting, single-chip microcomputer reached the purpose of warning by the break-make of control hummer.
Wireless transmitting system of the present utility model is based on the nRF905 wireless transmission circuit, comprise wireless transmission circuit and wireless receiving circuit, humidity value is taken out the back to be sent after the packing in wireless transmission circuit, and the frequency and the receiver address of editor's wireless signal, wireless receiving circuit is behind this machine of receiving address, data are unpacked, handle, finish the wireless transmission function of humidity data.
Single-chip microcomputer of the present utility model and serial port circuit are made up of single-chip microcomputer, MAX3223 interface level conversion chip and RS-232 serial communication, through humidity data that wireless transmitting system sends over after single-chip microcomputer is handled, be connected with computer with RS-232 through MAX3223, use the moisture curve software for display to show moisture curve on computers in real time.
Computer of the present utility model shows that the moisture curve system is made up of computer and is connected with serial port circuit with single-chip microcomputer, shows the humidity value that is come by single-chip microcomputer and serial port circuit transmission in real time.
Program part of the present utility model comprises master routine and interrupt service routine, master routine is initialization system at first, and reading and handle and showing by interrupt service routine of data finished, and is not carrying out in the most of the time of image data, MSP430 is in its idle state, to reach the low-power consumption purpose.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in the figure, a kind of intelligent humidity meter, its feature comprises the hygrometric system, data handling system, the humidity real-time display system, warning system, wireless transmitting system, single-chip microcomputer and serial port circuit, computer shows the moisture curve system, wherein hygrometric system 1 is made up of the DHT90 humidity sensor, data handling system 2 is made up of through transmission line the MSP430 single-chip microcomputer and is connected with hygrometric system 1, humidity real-time display system 3 is made up of through transmission line LCD1602 and is connected with data handling system 2, warning system 4 is made up of through transmission line buzzer circuit and is connected with data handling system 2, wireless transmitting system 5 by transtation mission circuit with accept circuit and form through transmission line and be connected with data handling system 2, single-chip microcomputer and serial port circuit 6 are by single-chip microcomputer, MAX3223 interface level conversion chip is formed with the RS-232 serial communication and is connected with wireless transmitting system 5 through transmission line, and computer shows that moisture curve system 7 is made up of computer and is connected with serial port circuit 6 with single-chip microcomputer.
DHT90 humidity sensor in the hygrometric system 1 detects in real time to ambient humidity, and the signal that will detect in real time is sent to data handling system 2 through transmission line and handles, the signal of humidity sensor output imports into by the A1 passage of ADC12 analog-to-digital conversion module on the MSP430F449 single-chip microcomputer in the data handling system 2, the ADC12 module is gathered signal and is converted digital signal then to, through corresponding software algorithm digital signal is converted to humidity value by single-chip microcomputer, show in humidity real-time display system 3 by LCD liquid crystal driver module on the sheet at last, be connected the buzzer warning system 4 of a pin of single-chip microcomputer, when humidity is higher than the humidity threshold value of setting, single-chip microcomputer reaches the purpose of warning by the break-make of control hummer, wireless transmitting system 5 is connected with data handling system 2 and will sends after the packing in wireless transmission circuit after the moisture signal taking-up, and the frequency and the receiver address of editor's wireless signal, wireless receiving circuit is behind this machine of receiving address, data are unpacked, handle, finish the wireless transmission function of humidity data, the data that 6 pairs of transmission of single-chip microcomputer that is connected with wireless transmitting system 5 and serial port circuit come are handled, and showing that with RS-232 serial communication and computer humidity system 7 is connected through MAX3223 interface level conversion chip, use moisture curve software for display shows moisture curve on computers in real time.Program part of the present utility model comprises master routine and interrupt service routine, master routine is initialization system at first, and reading and handle and showing by interrupt service routine of data finished, and is not carrying out in the most of the time of image data, MSP430 is in its idle state, to reach the low-power consumption purpose.
Claims (2)
1.
A kind of intelligent humidity meter, it is characterized in that comprising the hygrometric system, data handling system, the humidity real-time display system, warning system, wireless transmitting system, single-chip microcomputer and serial port circuit, computer shows the moisture curve system, wherein the hygrometric system is made up of the DHT90 humidity sensor, data handling system is made up of through transmission line the MSP430 single-chip microcomputer and is connected with the hygrometric system, the humidity real-time display system is made up of through transmission line LCD1602 and is connected with data handling system, warning system is made up of through transmission line buzzer circuit and is connected with data handling system, wireless transmitting system is made up of through transmission line transtation mission circuit and receiving circuit and is connected with data handling system, single-chip microcomputer is made up of through transmission line with the RS-232 serial communication with MAX3223 interface level conversion chip single-chip microcomputer with serial port circuit and is connected with wireless transmitting system, and computer shows that the moisture curve system is made up of computer and is connected with serial port circuit with single-chip microcomputer.
2. a kind of intelligent humidity meter according to claim 1, it is characterized in that the hygrometric system is made up of the DHT90 humidity sensor circuit, the DHT90 humidity sensor is a humidity compound sensor of calibrating digital signal output that contains, and comprises capacitive character condensate humidity sensing element, A/D converter and serial interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205455053U CN201796004U (en) | 2010-09-28 | 2010-09-28 | Intelligent humidometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205455053U CN201796004U (en) | 2010-09-28 | 2010-09-28 | Intelligent humidometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796004U true CN201796004U (en) | 2011-04-13 |
Family
ID=43850910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205455053U Expired - Fee Related CN201796004U (en) | 2010-09-28 | 2010-09-28 | Intelligent humidometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201796004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10055781B2 (en) | 2015-06-05 | 2018-08-21 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
| US10909607B2 (en) | 2015-06-05 | 2021-02-02 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
-
2010
- 2010-09-28 CN CN2010205455053U patent/CN201796004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10055781B2 (en) | 2015-06-05 | 2018-08-21 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
| US10909607B2 (en) | 2015-06-05 | 2021-02-02 | Boveda Inc. | Systems, methods and devices for controlling humidity in a closed environment with automatic and predictive identification, purchase and replacement of optimal humidity controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20110928 |