CN2872312Y

CN2872312Y - Agricultural environmental factor collector

Info

Publication number: CN2872312Y
Application number: CN 200620003657
Authority: CN
Inventors: 王成; 乔晓军; 赵春江; 张云鹤; 张馨; 高权
Original assignee: Beijing Research Center for Information Technology in Agriculture
Current assignee: Beijing Research Center for Information Technology in Agriculture
Priority date: 2006-02-13
Filing date: 2006-02-13
Publication date: 2007-02-21
Anticipated expiration: 2016-02-13

Abstract

A portable agricultural key environmental factor collector comprises a front panel (1), a Chinese ICD liquid crystal display (2), a touch input key (3), an external DC power indicator light (4), a lithium battery charging indicator light (5), a main circuit board (6), a control module (7) constituted by MSP430F135 single-chip microcomputer and peripheral circuit, a RS485 network communication interface (8), a transducer signal input interface (9), a CD power interface (10), a USB power interface (11), a lithium battery (12), a power switch (13), a plastic case (14), a humidity/temperature integrated sensor (15), a ground temperature sensor (16), and a light sensor (17). The utility model is used to automatically measure air temperature, air humidity, dew-point temperature, soil temperature, and illumination intensity in greenhouse, city, field and farmland.

Description

Portable agriculture critical environments factor Acquisition Instrument

Technical field:

The utility model belongs to the Agricultural Environmental Monitoring instrument field, is used for the automatic measurement of critical environments factors such as warmhouse booth, city, field, farmland.

Background technology:

Generally there is following problem in existing portable environment information acquisition instrument:

1, the environmental parameter of Ce Lianging is less, then need use a plurality of collectors simultaneously if measure various environmental parameters.

2, precision and long-time stability are not fine, can not measure dew point in high quality

3, can only carry out DATA REASONING, can not to data store or memory space very little, and networking difficulty is difficult to carry out multimetering.

4, use dry cell power supply, need often to change battery, use inconvenience and increase cost.

5, many external products cost an arm and a leg and manipulate inconvenience, and after sale service is difficult to guarantee.

Summary of the invention:

The purpose of this utility model, be to release a kind of air themperature, air humidity, dewpoint temperature, the soil moisture, intensity of illumination measured, the large-capacity data storage, by RS485 interface and computing machine communication, use lithium battery power supply, have the novel portable agricultural critical environments factor Acquisition Instrument of good reliability, higher degree of accuracy and long-term stability.The technical scheme that its technical matters that solves the utility model adopts:

Single-chip microcomputer is selected super low-power consumption type MSP430 series of products MSP430F135 for use, and operating voltage is 1.8～3.6V, 5 kinds of low-power consumption modes, the FLASH program storage that has 16kB repeatedly to programme in the sheet, the serial line interface of 1 full duplex, 1 hardware SPI interface, 8 passages, 12 bit A/D converters; Serial ports uses SN65HVD3082 to be extended to the RS485 interface, realizes the data transmission with host computer; The SPI interface connects data-carrier store AT45DB081, realizes the large-capacity data storage; Lithium battery is received 1 tunnel AD converter after by the precision resistance dividing potential drop, carries out the measurement of dump energy.Real-time clock DS1302 provides time reference for system, and the data of gathering according to the value of setting regularly deposit data-carrier store in.House dog MAX706 is used to strengthen anti-interference, and system can recover after meeting the strong jamming collapse voluntarily.Data acquisition interface is digital signal interface, and signal directly send single-chip microcomputer to handle; Temperature Humidity Sensor uses integrated SHT71, realizes non-calibrating, can measure dew point accurately simultaneously; Ground temperature sensor uses a line device DS18B20; Optical sensor uses TSL230, can realize the automatic conversion of range.Man-machine interface by power switch, touch input button, JHD12232A Chinese LCDs, light emitting diode and form, finish the demonstration, the indication of external power supply state, charged state indication of setting, image data and the roll display of time on date, the dump energy of switching on and shutting down, various parameters etc.System can use lithium battery power supply, and 5V direct supply or computing machine USB mouth are given lithium cell charging through charging chip LTC4055.

The beneficial effects of the utility model:

1, the measurement to air themperature, air humidity, dewpoint temperature, the soil moisture, intensity of illumination, Chinese liquid crystal display, vast capacity data storage have been realized.

2, can be by the RS485 network interface with the host computer swap data, long transmission distance, easy for operation.

3, adopt lithium battery power supply, the use of can charging repeatedly need not to change battery.

4, battery electric quantity is saved in super low-power consumption design.

Description of drawings:

Fig. 1 is an object construction schematic top view of the present utility model.

Fig. 2 is an object construction schematic side view of the present utility model.

Fig. 3 is that system of the present utility model forms structural representation.

Embodiment:

As shown in Figure 1, Chinese LCD LCDs (2), touch input button (3), external direct current power supply pilot lamp (4), lithium cell charging pilot lamp (5) are fixed on the front panel (1), and front panel (1) is fixed on the front portion of plastic casing (14) with screw; Control module (7), RS485 network communication interface (8), sensor signal input interface (9), direct supply interface (10), USB power interface (11) are welded on the main circuit board (6), and main circuit board (6) and lithium battery (12) are fixed on the inside of plastic casing (14) with screw; Connect with cable between front panel (1) and the main circuit board (6); Power switch (13) is fixed on the side of plastic casing (14); Humiture integrated sensor (15), ground temperature sensor (16), optical sensor (17) are connected to sensor signal input interface (9) by cable respectively.

System uses lithium battery power supply, and the 5V direct supply is given lithium battery (12) charging through the usb bus of direct supply interface (10) or computing machine through USB power interface (11).Total system has all adopted the super low-power consumption design, can be under the condition that does not need externally fed long time continuous working.

Power switch (13), Chinese LCD LCDs (2), touch input button (3), external direct current power supply pilot lamp (4) and lithium cell charging pilot lamp (5) are formed man-machine interface and state demonstration.Can finish switching on and shutting down by man-machine interface, the setting of various parameters, as: system's numbering, system date and time, time data memory interval etc., data, system date and time, system running state and dump energy etc. that roll display is gathered provide the indication of external direct current power supply and lithium cell charging by pilot lamp.Network communication interface is made up of RS485 network communication interface (8).System can pass through RS485 network communication interface and computing machine communication, receives various command and sends the data of gathering.

Control module (7) is made of MSP430F135 single-chip microcomputer and peripheral circuit thereof, comprises data-carrier store circuit, real time clock circuit, watchdog circuit etc.Control module is as the control core of total system, and its is controlled each several part circuit and finishes the roll display that reads data storage, data and information in differentiation, the data-carrier store that reads conversion, time and date of the setting of parameter, sensing data, state demonstration, the data communication with computing machine, the overall tasks such as detection of battery electric quantity.

Claims

1. portable agriculture critical environments factor Acquisition Instrument is characterized in that by front panel (1), Chinese LCD LCDs (2), touch input button (3), external direct current power supply pilot lamp (4), lithium cell charging pilot lamp (5), main circuit board (6), the control module (7) that constitutes by MSP430F135 single-chip microcomputer and peripheral circuit, RS485 network communication interface (8), sensor signal input interface (9), direct supply interface (10), USB power interface (11), lithium battery (12), power switch (13), plastic casing (14), humiture integrated sensor (15), ground temperature sensor (16), optical sensor (17) mutual group is integral; Chinese LCD LCDs (2), touch input button (3), external direct current power supply pilot lamp (4), lithium cell charging pilot lamp (5) are fixed on the front panel (1), and front panel (1) is fixed on the front portion of plastic casing (14) with screw; Control module (7), RS485 network communication interface (8), sensor signal input interface (9), direct supply interface (10), USB power interface (11) are welded on the main circuit board (6), and main circuit board (6) and lithium battery (12) are fixed on the inside of plastic casing (14) with screw; Connect with cable between front panel (1) and the main circuit board (6); Power switch (13) is fixed on the side of plastic casing (14); Humiture integrated sensor (15), ground temperature sensor (16), optical sensor (17) are connected to sensor signal input interface (9) by cable respectively.

2. portable agriculture critical environments factor Acquisition Instrument as claimed in claim 1 is characterized in that circuit part is by single-chip microcomputer MSP430F135, house dog MAX706, charging chip LTC4055, chip MAX756 boosts, step-down chip TPS7333, voltage reversal chip IC L7660, real-time clock DS1302, data-carrier store AT45DB081, the sensor signal input interface, the direct supply interface, the USB power interface, power switch, Chinese LCD LCDs JHD12232A, the RS485 network interface of SN65HVD3082 chip expansion, touch the input button, the external direct current power supply pilot lamp, the lithium cell charging pilot lamp, humiture integrated sensor SHT71, ground temperature sensor DS18B20, optical sensor TSL230 forms jointly; MSP430F135 and internal software are as the control core of total system, and house dog is connected the reseting pin of MSP430F135; Data-carrier store is connected to the SPI interface of MSP430F135 by the SPI data bus, and the RS485 network interface is connected to the MSP430F135 serial ports by extended chip; Chinese LCD LCDs, touch input button, real-time clock are directly received MSP430F135, and humiture, ground temperature, illumination signal are given MSP430F135 through the sensor signal input interface; Lithium battery is received 1 road AD translation interface of MSP430F135 after by the precision resistance dividing potential drop; System uses lithium battery power supply, and external power source is given lithium cell charging through direct supply interface or USB power interface.