CN105486413A

CN105486413A - Infrared temperature measurement alarm device

Info

Publication number: CN105486413A
Application number: CN201410471074.3A
Authority: CN
Inventors: 李相武; 王瑛; 李忠喜
Original assignee: Harbin Hengyu Mingxiang Technology Co Ltd
Current assignee: Harbin Hengyu Mingxiang Technology Co Ltd
Priority date: 2014-09-16
Filing date: 2014-09-16
Publication date: 2016-04-13

Abstract

The invention relates to an infrared temperature measurement alarm device, and the device comprises two microprocessor modules which take AT89C52 single-chip microcomputers as the cores, wherein the microprocessor modules are main control chips. A central controller is extended to receive the data from a plurality of temperature measurement modules, and employs a power amplification circuit built through three OP07 chips. A peripheral circuit consists of an analog-digital conversion circuit built through an ADC0809, a 38KHz pulse generation built through a 555 timer, an infrared transmission circuit built through a light-emitting diode, a digital display circuit, and an alarm apparatus. The device achieves infrared temperature measurement, multi-point detection and remote measurement, can enlarge the measurement range, and improves the precision of temperature detection.

Description

Infrared thermometry alarm device

Technical field

the present invention relates to a kind of temperature measurement and alarm device, especially can the infrared thermometry alarm device of remote measurement.

Background technology

temperature is live and work relation one of the physical quantity the most closely with the mankind, and the Detection & Controling of temperature are also one of relatively more typical application in industrial processes.Along with singlechip technology and sensor technology are being produced and fast development in life and widespread use, utilize the realization of new infrared temperature sensor to the measurement of temperature and transmission thus reach and carry out intellectualized detection and control to temperature, this mode has become temperature controlled inevitable development trend.

infrared technique is as the one in sensor technology, and this technology obtains a wide range of applications in fields such as modern science and technology, national defence and industrial or agricultural.Along with detecting devices and the raising of other portion of techniques, infrared sensor can have more performance and better sensitivity.Infrared temperature-measuring warning system, compared with traditional temp measuring system, has convenient reading, and temperature-measuring range is wide, thermometric is accurate, temperature survey and alarm indication separable, can realize multiple spot detect, its output temperature adopt numerical monitor, be convenient to expand other controlling functions, staff is also remote controlled, realizes controllers and is separated with by control object, reduces operating irregularity probability, be mainly used in relatively more accurate to thermometric, that controlled device has certain danger place, or R&D units etc.At present, Related product on high-tech product market at home and abroad has infrared ray fixed point temperature measurer and all kinds of telechiric device, but large-scale control system is uncommon, Detection & Controling also focus mostly in single level device, seldom have the middle distance wireless terminal device of multi-spot measurement and control.

Summary of the invention

the object of the present invention is to provide a kind of infrared thermometry alarm device, the remote temperature detection alarm device providing a kind of temperature detection to be separated with display alarm.

a kind of infrared thermometry alarm device, comprising two AT89C52 single-chip microcomputers is the microprocessor module of core, is main control chip, i.e. central controller; Central controller expansion receives multiple temperature measurement module, adopts the power amplification circuit that three OP07 build; Infrared transmitting circuit, digital-scroll technique circuit, warning device that 38KHz pulse producer, light emitting diode that analog to digital conversion circuit, 555 timers that peripheral circuit is built by ADC0809 are built are built form.

described two panels main control chip is separate, and temperature detection and the segmentation of display alarm function, realize data by infrared emission and receiving trap and transmit.

two panels single-chip computer AT89C52, is responsible for collection and the display alarm of temperature respectively; Temperature signal is passed to the main control chip AT89C52 of temperature detection by temperature probe SS-1011, the data completing temperature detection end and alarm indication end by infrared transmitting tube and receiver pope are again transmitted, data are transmitted with serial ports with 4 common cathode LED charactrons, realize Temperature displaying, send warning when temperature reaches setting value.

after present system powers on, single-chip microcomputer automatically resets, and the waiting period of entering ceiling temperature setting, waits for capping temperature, and press start key after temperature setting terminates, system starts measures ambient temperature.Temperature detection end is by after temperature sensor detected temperatures, through infrared emission and reception, temperature information is delivered to alarm indication end, changed by A/D again, temperature information is passed to single-chip microcomputer and carry out real time temperature display and temperature value judgement, Single-chip Controlling hummer sounding alarm when the upper temperature limit set before temperature value exceedes.

design feature of the present invention and beneficial effect:

1, this invention is for remote temperature measurement and control device, realizes temperature detection and the segmentation of display alarm function.

2, compact conformation of the present invention, volume are little, lightweight, can remote measurement environment temperature, add the security of tester.

Accompanying drawing explanation

fig. 1 is system principle structural drawing of the present invention;

fig. 2 is analog to digital conversion circuit schematic diagram;

fig. 3 is carrier signal circuit for generating schematic diagram;

fig. 4 is infrared transmission module circuit theory diagrams;

fig. 5 is digital-scroll technique circuit theory diagrams;

fig. 6 is warning portion circuit theory diagrams.

Embodiment

below in conjunction with accompanying drawing, principle of the present invention and concrete annexation are described in more detail:

embodiment 1

composition graphs 1, Fig. 1 is system principle structural drawing of the present invention; The present invention includes two panels single-chip computer AT89C52, be responsible for collection and the display alarm of temperature respectively; Temperature signal is passed to the main control chip AT89C52 of temperature detection by temperature probe SS-1011, the data completing temperature detection end and alarm indication end by infrared transmitting tube and receiver pope are again transmitted, data are transmitted with serial ports with 4 common cathode LED charactrons, realize Temperature displaying, send warning when temperature reaches setting value.

embodiment 2

fig. 2 to Fig. 6 is partial circuit schematic diagram of the present invention.Fig. 2 is analog to digital conversion circuit schematic diagram, 1 pin of the analog quantity temperature signal access ADC0809 amplified, digital quantity temperature information is exported through chip conversion, again with the control mouth of octal latch 74LS373 incoming control signal control ADC0809, the conversion of ADC0809 starts to access single-chip microcomputer output feedack by 16 of single-chip microcomputer, 17 pins and controls; Fig. 3 is carrier signal circuit for generating schematic diagram, farther for enabling infrared signal transmit, a high-frequency carrier signal to be added at coded signal output terminal, be the carrier pulse oscillator of 38KHz by 555 time base circuits and suitable peripheral cell component frequency, regulate adjustable rheostat RP ₂ resistance, the output terminal of adjustment 555 exports as the carrier signal of 38KHz; Fig. 4 is infrared transmission module circuit theory diagrams, is loaded on the carrier wave of 38KHz, is then launched temperature information modulation by light emitting diode; Fig. 5 is digital-scroll technique circuit theory diagrams, and single-chip microcomputer P0 mouth exports digital pipeline section and selects signal, and P2.0 ~ P2.3 mouth exports charactron position and selects signal, then completes the timesharing display of charactron by single-chip microcomputer control program; Fig. 6 is warning portion circuit theory diagrams, once temperature exceedes the upper temperature limit of setting, single-chip microcomputer just performs interrupt routine, exports high level to P2.6 mouth, and hummer just energising sounding produces alerting signal.

Claims

1. an infrared thermometry alarm device, is characterized in that: comprising two AT89C52 single-chip microcomputers is the microprocessor module of core, is main control chip, i.e. central controller; Central controller expansion receives multiple temperature measurement module, adopts the power amplification circuit that three OP07 build; Infrared transmitting circuit, digital-scroll technique circuit, warning device that 38KHz pulse producer, light emitting diode that analog to digital conversion circuit, 555 timers that peripheral circuit is built by ADC0809 are built are built form.

2. a kind of infrared thermometry alarm device according to claim 1, is characterized in that: described two panels main control chip is separate, and temperature detection and the segmentation of display alarm function, realize data by infrared emission and receiving trap and transmit.