CN201464044U

CN201464044U - Non-contact temperature measuring device

Info

Publication number: CN201464044U
Application number: CN2009200941103U
Authority: CN
Inventors: 王蔚; 王玉华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-03
Filing date: 2009-08-03
Publication date: 2010-05-12
Anticipated expiration: 2019-08-03

Abstract

The utility model discloses a non-contact temperature measuring device composed of an infrared detection lens, a signal receiving amplification and conditioning circuit, an A/D conversion circuit, a singlechip main control circuit, a monitor, a control output interface, a main unit button and a serial communication interface; the infrared detection lens is sequentially and electrically connected with the signal receiving amplification and conditioning circuit, the A/D conversion circuit and the singlechip main control circuit, the monitor, the control output interface, the main unit button and the serial communication interface are electrically connected with the singlechip main control circuit, wherein the A/D conversion circuit adopts an AD 574 chip, and the singlechip main control circuit adopts an AT89C51 singlechip; the non-contact temperature measuring device has wider temperature measurement range, higher measurement accuracy, timely acquires measurement data and has wider industrial application range.

Description

The non-contact temperature measuring device

Technical field

The utility model relates to a kind of non-contact temperature measuring device, particularly a kind of infrared thermometry instrument.

Background technology

In many industry spot, as metal smelt, the industry heating boiler, and in other various firing equipments, collection and control for temperature have important role, but because during such as metal smelt, its smelting temperature is higher relatively, the contact type measurement temperature is difficult to realize, the many chemical materials that are heated of chemical field have very strong corrosivity, measuring sonde to contact has corrosive attack, contact type measurement general measure inertia is relatively large simultaneously, bring the hysteresis of measurement data, because above or the like some relevant factors, thereby make contactless measurement have very high using value, it can be widely used in various high temperature, in corrosion and other abominable industry spot environment, measure the temperature of equipment under test accurately.And existing infrared thermometry instrument, it is measured, and the scope of temperature is narrower, measuring accuracy is not high, and is limited in industrial range of application.

Summary of the invention

The purpose of this utility model is for the measurement data that solves the existence of industry spot contact type temperature measuring obtains to lag behind, probe easily is corroded and existing infrared thermometry instrument, it is measured, and the scope of temperature is narrower, measuring accuracy is not high, be not suitable for the problem of industrial application, provide a kind of temperature measurement range broad, measuring accuracy higher, measurement data obtains in time, at the non-contact temperature measuring device of industrial range of application broad.

The utility model is made up of infrared detection camera lens, received signal amplification and modulate circuit, A/D change-over circuit, single-chip microcomputer governor circuit, display, control output interface, main frame button, serial communication interface, the infrared detection camera lens is electrically connected with received signal amplification and modulate circuit, A/D change-over circuit and single-chip microcomputer governor circuit successively, and display, control output interface, main frame button and serial communication interface all are electrically connected with the single-chip microcomputer governor circuit.Wherein, the A/D change-over circuit adopts the AD574 chip, and the single-chip microcomputer governor circuit adopts the AT89C51 single-chip microcomputer.

Principle of the present utility model: by infrared ray sensor collecting temperature information, the sensor output voltage signal is very weak, amplify through amplifying circuit, with the signal input modulus conversion chip AD574 after amplifying, generating after changing can be for the discernible digital signal of single chip computer AT 89C51, single-chip microcomputer is after receiving signal, its conversion is generated and can detected data can be sent to host computer (main control computer) through serial communication interface simultaneously and provide the purpose of temperature parameter to be reached for the industry spot Comprehensive Control for the code of display module demonstration.Simultaneously detected temperatures and the temperature value by keyboard to set up are compared, exportable control signal reaches the purpose of industry spot temperature control with the start and stop of control firing equipment when it exceeds range of set value.

The course of work of the present utility model is:

(1), the infrared ray that produces of the extraneous equipment under test of infrared detection camera lens perception, in temperature not simultaneously, the infra-red intensity that object produced is different, with Shot Detection to infra-red intensity convert the electrical parameter of corresponding size, output corresponding voltage value to.

(2), camera lens part output valve is nursed one's health and amplified, the magnitude of voltage in the sensing range is adjusted into 0-10V voltage,, uses for modulus conversion chip AD574 to obtain higher accuracy of detection.

(3), modulus conversion chip AD574 converts analog quantity to digital quantity, give single chip computer AT 89C51 and handle.

(4), single-chip microcomputer is converted to the detected value that receives and shows that sign indicating number output shows, and compare with the control temperature range of setting, when exceeding, pass through the control signal output amplifier to the order of firing equipment transmit button, but the single-chip microcomputer supervisory keyboard receives key information at any time simultaneously, and keep in touch by serial port and host computer, carry out the transmission of information.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

See also shown in Figure 1, present embodiment is made up of infrared detection camera lens 4, received signal amplification and modulate circuit 11, A/D change-over circuit 12, single-chip microcomputer governor circuit 13, display 6, control output interface 8, main frame button 9, serial communication interface 10, infrared detection camera lens 4 amplifies with received signal successively and modulate circuit 11, A/D change-over circuit 12 and single-chip microcomputer governor circuit 13 are electrically connected, and display 6, control output interface 8, main frame button 9 and serial communication interface 10 all are electrically connected with single-chip microcomputer governor circuit 13.Wherein A/D change-over circuit 12 adopts the AD574 chip, and single-chip microcomputer governor circuit 13 adopts the AT89C51 single-chip microcomputer.

Claims

1. non-contact temperature measuring device, it is characterized in that: form by infrared detection camera lens, received signal amplification and modulate circuit, A/D change-over circuit, single-chip microcomputer governor circuit, display, control output interface, main frame button, serial communication interface, the infrared detection camera lens is electrically connected with received signal amplification and modulate circuit, A/D change-over circuit and single-chip microcomputer governor circuit successively, and display, control output interface, main frame button and serial communication interface all are electrically connected with the single-chip microcomputer governor circuit; Wherein, the A/D change-over circuit adopts the AD574 chip, and the single-chip microcomputer governor circuit adopts the AT89C51 single-chip microcomputer.