CN202870321U

CN202870321U - Ultralow power digital raingauge

Info

Publication number: CN202870321U
Application number: CN 201220523044
Authority: CN
Inventors: 肖兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-14
Filing date: 2012-10-14
Publication date: 2013-04-10
Anticipated expiration: 2022-10-14

Abstract

The utility model provides an ultralow power digital raingauge, including a rainfall sensor module, a main control module, a user interaction module, a memory module, a clock module, and a communication module. The ultralow power digital raingauge is characterized in that the main control module is respectively connected with the rainfall sensor module, the user interaction module, the memory module, the clock module, and the communication module. When there is rain, rainwater gathered by the rainfall sensor module enters a measuring cylinder through a water guiding nozzle, drives a measuring wheel to drive a photoelectric encoder to synchronously rotate; the encoder can output encoded data corresponding to the precipitation height; the main control module directly reads the encoded data by a parallel mode; the encoded data are converted into corresponding natural binary codes; then rainfall data are formed after scale transformation and are displayed and stored through the user interaction module and the memory module; and when the communication module is connected with the computer, a data transmission instruction is inputted, and the stored rainfall data can be automatically transmitted into a computer, thereby being convenient for the data processing and analysis display of the computer. In the absence of rain or integral point timekeeping, the main control module closes the power for the modules except the clock module, and enters a dormant state.

Description

Super low-power consumption numeral rain gage

Technical field

The utility model relates to a kind of rain gage, especially super low-power consumption numeral rain gage.

Background technology

Rain gage is the Basic Measuring Instrument of atmospheric precipitation amount, is widely used in the aspects such as meteorological observation, hydrographic survey, hydroelectric project, environment monitoring, field irrigation, flood control command.The rain gage of weather station, hydrometric station use mostly is siphon rainfall recorder or tipping-bucket rain-gauge at present, and siphon rainfall recorder does not have electric signal interface, can't realize rainfall amount automatically measurement and storage; And the tipping-bucket rain-gauge measuring accuracy is low, and measuring error changes violent with rainfall intensity, and system power dissipation is large, needs ac power supply.The two all can't use in high mountain, the extremely inconvenient area of the traffic such as remote, meagrely-populated.

Summary of the invention

In view of above these situations, the utility model provides a kind of super low-power consumption numeral rain gage.

The utility model provides a kind of super low-power consumption numeral rain gage, comprise rainfall sensing module, main control module, user interactive module, memory module, clock module, communication module, it is characterized in that: main control module is connected with rainfall sensing module, user interactive module, memory module, clock module, communication module respectively.When rainfall is arranged, the rainwater that the rainfall sensing module is assembled enters metering cylinder through the diversion mouth, drive measuring wheel and drive the photoelectric encoder synchronous rotary, scrambler is the exportable coded data corresponding with the precipitation height, adopt parallel mode directly to read by main control module, then convert corresponding natural binary code to, pass through again gauge transformation, form rainfall data and show and store by user interactive module and memory module, when communication module connects computing machine, defeated personal data transfer instruction can be sent to the rainfall data of storing in the computing machine automatically, processes and analyze with the data that make things convenient for computing machine to show.In without rainfall or the situation of giving the correct time without integral point, main control module is closed the power supply of other modules except clock module, then enters dormant state.

The beneficial effects of the utility model are, have low in energy consumption, measure accurate, use the characteristics such as simple, be fit to the rainfall measurement under the varying environment, have higher practical value.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

Embodiment

In Fig. 1, a kind of super low-power consumption numeral rain gage, comprise rainfall sensing module 1, main control module 2, user interactive module 3, memory module 4, clock module 5, communication module 6, it is characterized in that: main control module 2 is connected with rainfall sensing module 1, user interactive module 3, memory module 4, clock module 5, communication module 6 respectively.When rainfall is arranged, the rainwater that rainfall sensing module 1 is assembled enters metering cylinder through the diversion mouth, drive measuring wheel and drive the photoelectric encoder synchronous rotary, scrambler is the exportable coded data corresponding with the precipitation height, adopt parallel mode directly to read by main control module 2, then convert corresponding natural binary code to, pass through again gauge transformation, form rainfall data and show and store by user interactive module 3 and memory module 4, when communication module 6 connects computing machine, defeated personal data transfer instruction can be sent to the rainfall data of storing in the computing machine automatically, processes and analyze with the data that make things convenient for computing machine to show.In without rainfall or the situation of giving the correct time without integral point, main control module is closed the power supply of other modules except clock module 5, then enters dormant state.

Rainfall sensing module 1 sensor adopts the digital coding type water-level gauge of 0.1mm high resolution, and it was comprised of metering cylinder (float cylinder), tipping bucket, float, measuring cable, balance bob, measuring wheel, axle sleeve, absolute value type optical rotary encoder, upper lower support plate, solenoid valve, draining sand excluding valve, communicating pipe etc.By encoding and decoding rainfall data is output as 9 Gray codes, adopts parallel mode directly to read by main control module 2.Main control module 2 has adopted the mixed-signal processor MSP430 with super low-power consumption characteristic as control and processing core.When rainfall and system parameter setting, adopt interrupt mode to process, look-at-me can be waken MSP430 up and enter duty from dormant state in 6 μ s, after processing finishes, the power supply of closing immediately corresponding module returns dormant state, to reduce system power dissipation.User interactive module 3 is comprised of key circuit and display circuit, and key circuit is comprised of 4 waterproofing membrane buttons, is respectively function key, lifting key, decline key and acknowledgement key.4 buttons are corresponding to 4 I/O mouth lines of single-chip microcomputer, and wherein I/O mouth line corresponding to function key has interrupt function, and button is used for the Adjustment System time, station number, instrument self checking, end water adjustment etc. are set.What display circuit adopted is the OCMJ2X10C liquid crystal display, and this display can show letter, numeric character, Chinese font and figure, also has to draw and text screen mixed display function.The data transmission of display and main control module 2 adopts parallel 8 interface modes, by to RS (instruction and data exchange pin), RW (pin is switched in read-write), E (enable pin), display operation is finished in the control of DB0～DB7 (8 bit data pin).Memory module 4 has adopted low-power consumption high-capacity flash memory chip SST28VF040A, can preserve 12～18 months rainfall data in the situation of rainfall data without compression, and the concrete holding time is determined by rainfall number of times and rainfall amount.The clock circuit that clock module 5 has adopted the high precision clock chip DS1305 of Dallas company to consist of is used for providing data acquisition time and integral point time signal to main control module 2.DS1305 has serial line interface and with the timing alarm function, adopt binary-coded decimal represent real-time clock second, minute, hour, the temporal information of week, day, Month And Year.Communication module 6 is comprised of two parts, and a part is the standard serial communication interface that links to each other with GPRS module or PC, and another part is the communication interface that links to each other with RTU.Because what MSP430 adopted is the 3V logic, so when carrying out the conversion of RS232 signal level, must adopt the RS232 chip of 3V.

Claims

1. super low-power consumption numeral rain gage, comprise rainfall sensing module (1), main control module (2), user interactive module (3), memory module (4), clock module (5), communication module (6), it is characterized in that: main control module (2) is connected with rainfall sensing module (1), user interactive module (3), memory module (4), clock module (5), communication module (6) respectively.