CN104236745A - Low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument - Google Patents
Low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument Download PDFInfo
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- CN104236745A CN104236745A CN201310239834.3A CN201310239834A CN104236745A CN 104236745 A CN104236745 A CN 104236745A CN 201310239834 A CN201310239834 A CN 201310239834A CN 104236745 A CN104236745 A CN 104236745A
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Abstract
The invention relates to a low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument which is composed of a power supply switch, a power supply processing model, a single-chip microcomputer module, a liquid crystal display module, a button functional module, a temperature measuring module, a clock module, an SD card module, a working state indication module, a communication module, a circuit mainboard and a shell. All the modules are arranged on the circuit mainboard with the dimension of 200 mm * 100 mm * 1.5 mm. The low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument can measure and record the temperature of 1 to 64 points at the same time, temperature measurement is accurate, working temperature ranges from minus 40 DEG C to 85 DEG C, the temperature resolution reaches 0.02 DEG C, measuring precision reaches 0.05 DEG C, and the sleep current in an off-line state is smaller than 20 microamperes. The low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument has the advantages of being small in size, light, low in power consumption, high in integration degree, resistant to low temperature, low in cost, reliable in work, high in operation speed, good in load characteristic, capable of carrying out display on-line in real time and the like, and is especially suitable for temperature measurement and recording in a frozen earth area for a long term.
Description
Technical field
The present invention relates to a kind of thermometric instruments, relate to a kind of low power consumption multi-channel card insert type frozen soils temperature survey record instrument specifically.
Background technology
In cryopedology research, temperature survey is one of the most measured physical quantity, to the measuring method of temperature and relevant measuring equipment and instrument a lot, thermistor temperature detecting is a kind of wherein the most frequently used high precision contact temperature-measuring method.Its temperature-measurement principle utilizes thermistor (R) in certain temperature range, and its resistance coefficient becomes characteristic that is accurate, sensitive, regulated linear relation to measure with temperature.On the one hand, monitored field point is widely distributed, the point for measuring temperature of each some monitoring is many, so just need to configure a large amount of temperature measuring devices, the automatic temperature measurement instrument overwhelming majority of current employing is import equipment, expensive, and therefore many thermometric fields point is all measure by artificial going for 1 time/month or 1 times/year, the expense that not only wastes time and energy is large, and does not obtain continuous data accurately.On the other hand, to thermometric, many functions of import temperature measuring device are all idle, cause very large waste.So in thermometric process, to economize on resources and great number cost must not be irrespective problem.
Summary of the invention
In view of above-mentioned, object of the present invention aims to provide a kind of low power consumption multi-channel card insert type frozen soils temperature survey record instrument, for frozen soils temperature survey record.
The object of the invention is to complete like this:
A kind of low power consumption multi-channel card insert type frozen soils temperature survey record instrument, in box body.Comprising a slice SH78F166A high speed, high efficiency 8051 in box body can compatible single-chip microcomputer, the wide operating voltage supper-fast 1T 8051 technical grade Flash microcontroller that eight SC91F712 are reinforced, a QC12846B Chinese character image dot matrix lcd module, a SD card read-write memory module, a PCF8563 clock module, a slice L7805 tri-rectifies power supply voltage stabilizing integrated chip, a slice REG1117-3.3 is adjustable low voltage difference positive supply voltage stabilizing integrated chip, all modules are arranged on the circuit main board of a 200mm × 100mm × 1.5mm.REG1117-3.3 is utilized to provide 3.3V voltage to SD memory card module circuit.The SH78F166A of main control singlechip sends a pulse signal first to sub-single-chip microcomputer SC91F712, start after sub-single-chip microcomputer SC91F712 receives pulse signal, sub-single-chip microcomputer SC91F712 adopts the scan mode of alternately input, the voltage signal of tested thermistor by dividing potential drop gained is gathered, realize A/D conversion and draw data, sub-single-chip microcomputer SC91F712 used serial mode to send to main control singlechip SH78F166A translation data again, main control singlechip SH78F166A in inside after treatment, by external LCD MODULE, data are shown, by external SD card read-write memory module, data are stored, data can be sent on computer by external communication interface module.In addition, main control singlechip SH78F166A reads the time by external clock module and is stored in SD card.
The beneficial effect of advantage of the present invention and generation is:
1, this survey record instrument can be measured simultaneously and record the temperature of 1-64 points, and thermometric is accurate, operating temperature range-40-85 DEG C, temperature resolution reaches 0.02 DEG C, measuring accuracy reaches 0.05 DEG C, and under non-on line state, quiescent current is less than 20uA, and operating temperature range is-40-85 DEG C.Have the features such as volume is little, lightweight, power consumption is little, integrated level is high, low temperature resistant, cost is low, reliable operation, travelling speed are fast, load characteristic good and can show in real time online, particularly suitable carries out long-term temperature measuring and recording in Frozen Ground Area simultaneously.
2, technical parameter of the present invention is:
1), measuring tempeature point range: 1-64;
2), temperature resolution :≤0.02 DEG C;
3), measuring accuracy :≤0.05 DEG C;
4), quiescent current under non-on line state: < 20uA;
5), operating voltage: 10-14VDC;
6), operating temperature range :-40-85 DEG C.
Accompanying drawing explanation
Fig. 1 is the structural representation of this survey record instrument.
Fig. 2 is the panel schematic diagram of this survey record instrument.
Fig. 3 is the power supply processing module circuit diagram of this survey record instrument.
Fig. 4 is the main control singlechip SH78F166A circuit diagram of this survey record instrument.
Fig. 5 is the sub-single-chip microcomputer SC91F712 circuit diagram of this survey record instrument.
Fig. 6 is the LCD MODULE circuit diagram of this survey record instrument.
Fig. 7 is the clock module circuit diagram of this survey record instrument.
Fig. 8 is SD card memory module and the 3.3V power supply processing circuit figure of this survey record instrument.
Fig. 9 is the key function circuit diagram of this survey record instrument.
Figure 10 is the workflow diagram of this survey record instrument.
Figure 11 is the wiring diagram of the actual measurement thermistor of this survey record instrument.
Embodiment
The present embodiment measures 64 thermistors for survey record instrument of the present invention, thermistor wherein used is produced by Changzhou Borrow Electronics Co., Ltd., model is 0568, Figure 11 is shown in by the wiring diagram measured, wherein 1-64 measurement port connect corresponding 1-64# thermistor respectively, and concentric line correspondence connects.
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described again:
As shown in figs. 1-11, a kind of low power consumption multi-channel card insert type frozen soils temperature survey record instrument, this measuring instrument (or circuit) comprises a slice SH78F166A high speed, high efficiency 8051 can compatible single-chip microcomputer, as Master control chip, the wide operating voltage supper-fast 1T 8051 technical grade Flash microcontroller that eight SC91F712 are reinforced, for realizing A/D conversion, a QC12846B Chinese character image dot matrix lcd module, for display measurement data, a SD card read-write memory module, for storing the data measured and obtain, a PCF8563 clock module, the time is provided for giving main control chip SH79F166A, a slice L7805 tri-rectifies power supply voltage stabilizing integrated chip.Utilize L7805 to provide 5V voltage to circuit, a slice REG1117-3.3 is adjustable low voltage difference positive supply voltage stabilizing integrated chip, utilize REG1117-3.3 to provide 3.3V voltage to SD memory card module circuit.All modules are arranged on the circuit main board of a 200mm × 100mm × 1.5mm
By thermistor number requirement needed for actual frozen soil thermometric, respectively the lead-in wire of thermistor is closely attached to the Wiring port of this survey record instrument.
When main control singlechip SH78F166A sends a pulse signal to eight sub-single-chip microcomputer SC91F712, start after sub-single-chip microcomputer SC91F712 receives pulse signal, sub-single-chip microcomputer SC91F712 adopts the scan mode of alternately input, the voltage signal of tested thermistor by dividing potential drop gained is gathered, realize A/D conversion and draw data, sub-single-chip microcomputer SC91F712 used serial mode to send to main control singlechip SH78F166A translation data again, main control singlechip SH78F166A in inside after treatment, by external LCD MODULE, the data obtained are shown, by external SD card memory module, acquisition data are stored, data can be sent on computer by external communication interface module.In addition, main control singlechip SH78F166A reads the time by external clock module and is stored in SD card.System scan measures 64 thermistors, and after the data of acquisition are stored, at this moment main control singlechip SH78F166A will stop to after sub-single-chip microcomputer SC91F712 corresponding pulse signal.After this has been measured, wait for that measuring-signal arrives next time.
The present embodiment is under temperature is the environment of-20 DEG C, and adopt this survey record instrument to measure the result of 64 thermistors, temperature resolution reaches 0.02 DEG C, and precision reaches 0.05 DEG C, and under non-on line state, quiescent current is less than 20uA.
Claims (1)
1. a low power consumption multi-channel card insert type frozen soils temperature survey record instrument, in box body, it is characterized in that comprising in box body a slice SH78F166A high speed, high efficiency 8051 can compatible single-chip microcomputer, the wide operating voltage supper-fast 1T 8051 technical grade Flash microcontroller that eight SC91F712 are reinforced, a QC12846B Chinese character image dot matrix lcd module, a SD card read-write memory module, a PCF8563 clock module, a slice L7805 tri-rectifies power supply voltage stabilizing integrated chip, a slice REG1117-3.3 is adjustable low voltage difference positive supply voltage stabilizing integrated chip, all modules are arranged on the circuit main board of a 200mm × 100mm × 1.5mm, it is characterized in that: the SH78F166A of main control singlechip first sends a pulse signal to sub-single-chip microcomputer SC91F712, start after sub-single-chip microcomputer SC91F712 receives pulse signal, sub-single-chip microcomputer SC91F712 adopts the scan mode of alternately input, the voltage signal of tested thermistor by dividing potential drop gained is gathered, realize A/D conversion and draw data, sub-single-chip microcomputer SC91F712 used serial mode to send to main control singlechip SH78F166A translation data again, main control singlechip SH78F166A in inside after treatment, by external LCD MODULE, data are shown, by external SD card memory module, data are stored, can data be sent on computer by external communication interface module, in addition, main control singlechip SH78F166A reads the time by external clock module and is stored in SD card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239834.3A CN104236745A (en) | 2013-06-18 | 2013-06-18 | Low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239834.3A CN104236745A (en) | 2013-06-18 | 2013-06-18 | Low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument |
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| Publication Number | Publication Date |
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| CN104236745A true CN104236745A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310239834.3A Pending CN104236745A (en) | 2013-06-18 | 2013-06-18 | Low-power-consumption multichannel card inserting type frozen earth temperature measuring and recording instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104236745A (en) |
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2013
- 2013-06-18 CN CN201310239834.3A patent/CN104236745A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 冯玉梅，沈海燕，王富章等: ""青藏冻土远程无线自动监测系统的设计与实现"", 《交通运输系统工程与信息》 * |
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Application publication date: 20141224 |
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