CN202158902U - Infrared temperature measurement system - Google Patents

Abstract

The utility model discloses an infrared temperature measurement system. Temperature signals, target temperature and environment temperature are measured by TN series of infrared temperature sensors with SPI (Serial Peripheral Interface, serial peripheral interface) interfaces at the same time, the measured datum are sent to STC89C516RD+single chip to process and then sent to a nixie tube to display, and the temperature is broadcasted through an external speech broadcast circuit. The infrared temperature measurement system of the utility model breaks through traditional temperature measurement mode, is featured with fast response, high measurement precision, high reliability and wide scope, and is not damaged easily because of non-contact measurement. The temperature measurement system is convenient for daily-life use of people by accurate and fast measurement function and easily understood digital display mode, and becomes more intelligentized and humanized through the speech broadcast function.

Description

A kind of infrared temperature measurement system

Technical field

The utility model relates to a kind of temperature measurement system, especially a kind of infrared temperature measurement system of using contactless infrared technique measurement.

Background technology

At present, infrared technique has a wide range of applications in fields such as industry, medical science and scientific researches.Infrared eye by the thermosensitive type infrared eye to the photoelectric type infrared eye again to the development of laser detector, greatly promoted development Trend of IR Detection Technology.Infrared technique militarily can be used for target detection, communication and night vision, can be used for thermal source detection, temperature survey and process control, IR spectroscopy, Infrared Heating drying, infrared remote sensing etc. aspect industry, medical science and the scientific research.Using infrared technique, to measure the equipment of temperature a lot, especially medically use many especially.Because traditional temperature taking meter need contact thermometer with the human body skin surface, the inaccurate shortcoming of existence measurement, and also temperature data reads from the scale of thermometer, adds the deviation that the people is visual, increased the error of reading again; Add contacting of thermometer and human body, cause the infection of some diseases easily, harm medical worker and patient's health.Application infrared thermography technology necessarily program addresses the above problem, and adopts non-contacting metering system, can improve accuracy of measurement and ward off disease propagation.But existing infrared temperature measurement apparatus generally is converted into voltage signal through infrared temperature sensor with the temperature signal that collects; Amplify voltage signal through analog amplify circuit then; Send processor again to and carry out analog to digital conversion and calculate temperature value, output at last shows.Whole process is through multistage conversion processing, and the temperature survey time is longer, and precision is also not high enough.

Therefore be necessary to develop a kind of novel infrared temperature measurement system; Make it use noncontact IR survey technology, adopt the infrared temperature sensor with SPI interface to carry out temperature acquisition, response is fast, measuring accuracy is high, reliability is high; Applied range, not fragile; And have digitizing demonstration and a voice broadcast function.

Summary of the invention

The utility model provides a kind of application noncontact IR survey technology to prior art problems, adopts the infrared temperature sensor with SPI interface to carry out temperature acquisition, and response is fast, measuring accuracy is high, reliability is high, and applied range is not fragile; And has an infrared temperature measurement system of digitizing demonstration and voice broadcast function.

In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:

Described a kind of infrared temperature measurement system comprises infrared temperature sensor, single-chip microcomputer, charactron driving circuit and charactron; Said infrared temperature sensor is connected with said single-chip microcomputer, and said charactron is connected with said single-chip microcomputer through said charactron driving circuit.

Further, also comprise voice broadcast output circuit and loudspeaker; Said loudspeaker is connected with said single-chip microcomputer through said voice broadcast output circuit.

Further, said infrared temperature sensor is connected with said single-chip microcomputer through the SPI interface.

Further, the model of said single-chip microcomputer is STC89C516RD+.

The described a kind of infrared temperature measurement system principle of work of the utility model is: based on blackbody radiation law, black matrix is the emittance that under any temperature, can both all absorb any wavelength that projects its surface, does not both reflect, and does not also have the object of transmission.It is also to extraneous emittance simultaneously, and the monochromatic radiation temperature of black matrix is to be described in the emittance of sending on the unit area of a certain wavelength radiation source.The infrared radiation of object being launched through said infrared temperature sensor absorbs, and changes into the numeric string line data, sends said single-chip microcomputer to through the SPI interface and handles calculating, draws temperature value; Said single-chip microcomputer shows through said digital driving circuit temperature value on said charactron; Said single-chip microcomputer can also connect said voice broadcast output circuit, measure temperature results change into voice signal, through said loudspeaker plays.

The advantage of the utility model is: a kind of infrared temperature measurement system is provided; Use noncontact IR survey technology, adopt the infrared temperature sensor with SPI interface to carry out temperature acquisition, response is fast, measuring accuracy is high, reliability is high; Applied range, not fragile; And have digitizing demonstration and a voice broadcast function.

Description of drawings

Fig. 1 is the principle block diagram of the described a kind of infrared temperature measurement system of the utility model.

The division mark is following in the accompanying drawing: 1, infrared temperature sensor; 2, single-chip microcomputer; 3, charactron driving circuit; 4, charactron; 5, voice broadcast output circuit; 6, loudspeaker.

Embodiment

Shown in accompanying drawing 1, a kind of principle block diagram of infrared temperature measurement system is made up of infrared temperature sensor 1, single-chip microcomputer 2, charactron driving circuit 3, charactron 4, voice broadcast output circuit 5 and loudspeaker 6.Said infrared temperature sensor 1 is connected with said single-chip microcomputer 2 through the SPI interface, and said charactron 4 is connected with said single-chip microcomputer 2 through said charactron driving circuit 3.Said loudspeaker 6 is connected with said single-chip microcomputer 2 through said voice broadcast output circuit 5.

The infrared temperature sensor 1 that system adopts is the TN system sensor; Has the SPI interface; Can target temperature and ambient temperature signal directly be changed into serial data and send single-chip microcomputer 2 to; Do not need to add in addition analog to digital conversion and amplifying circuit, therefore, data acquisition and conversion Calculation speed is fast and precision is high.And single-chip microcomputer 2 adopts the STC89C516RD+ series monolithic, and the 3.3V power supply is low in energy consumption, strong interference immunity, and working stability is reliable.For further improving measuring accuracy, single-chip microcomputer 2 can be through the mode of software filtering in routine processes, and promptly each the measurement gathered a plurality of temperature datas, averages as measurement result then.Single-chip microcomputer 2 drives charactron 4 with the temperature value that calculates through digital driving circuit 3 and shows that the temperature displayed value can be accurate to 2 significant digits, and is very directly perceived; Single-chip microcomputer 2 sends result of calculation to voice broadcast output circuit 5 and handles, and digital signal is changed into voice signal, and plays through loudspeaker 6.

As above-mentioned another kind of technological improvement, can in system, set up several buttons and keyboard input module, be connected to single-chip microcomputer 2.Among the inside FLASH that nearest 10 measurement results is kept at through programmed control single-chip microcomputer 2, through each output measurement result record by key control charactron 4 and loudspeaker 6.For example, when pushing button, make charactron 4 show last measurement result, click the last again measurement result of demonstration again, so analogize; When pressing another button, make loudspeaker 6 play the measurement result of current demonstration.Like this, help measurement result is repeatedly compared analysis, make that temperature survey is intelligent more, hommization, be convenient for people to daily life and each field and use.

Obviously the foregoing description is not the restriction to the utility model, and above-mentioned a kind of infrared temperature measurement system can also have other many variations.Though combined above-mentioned example to go through the utility model, some that should be understood that professional person in the industry can obviously expect are identical, and alternative scheme all falls within the protection domain that the utility model claim limited.

Claims (4)

1. an infrared temperature measurement system, is characterized in that, comprises infrared temperature sensor (1), single-chip microcomputer (2), nixie tube drive circuit (3) and nixie tube (4); Described infrared temperature sensor (1) and all The single-chip microcomputer (2) is connected, and the digital tube (4) is connected with the single-chip microcomputer (2) through the digital tube driving circuit (3). 2. infrared temperature measuring system according to claim 1, is characterized in that, also comprises voice broadcast output circuit (5) and loudspeaker (6); Described loudspeaker (6) is passed through described voice broadcast output circuit (5) and The single-chip microcomputer (2) is connected. 3. The infrared temperature measurement system according to claim 2, characterized in that the infrared temperature sensor (1) is connected to the single-chip microcomputer (2) through an SPI interface. 4. The infrared temperature measurement system according to claim 3, characterized in that, the model of the single-chip microcomputer (2) is STC89C516RD+.

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