A kind of infrared temperature measurement apparatus
Technical field
The utility model relates to electronic technology field, is specifically related to a kind of infrared temperature measurement apparatus.
Background technology
Infrared thermometer is by infrared ray, to measure the instrument of object temperature, its thermopair by sensor internal detects the temperature difference of thermopair self upper and lower surface, when the infrared ray sending when object incides thermopair upper surface, the temperature of upper surface is because being raise by infrared radiation, now the upper and lower surface of thermopair can produce the temperature difference, thereby output thermoelectric voltage signal obtains body temperature signal for infrared thermometer metering circuit resume module.
Because human body temperature is relatively stable, human surface temperature can change along with environment temperature, therefore human body is different from the surperficial thermorodiative property of object, thereby when measuring respectively object and human body, need to use two kinds of infrared thermometers of human body and object, or two kinds of thermometers are integrated in an infrared thermometer.Yet, in the prior art, this have can not only measure body surface temperature, and the infrared thermometer that can measure human surface temperature is very complicated in design and operation, for example, one of prior art is to select temperature survey pattern by push button, but this mode need to increase a large amount of hardware realizes different metering circuits, and body surface temperature survey pattern mostly for detection of or metering, therefore do not need often to stir push button, user may use body surface temperature survey pattern to measure human body temperature because of the shortage of carelessness or background knowledge, thereby obtain wrong result, two of prior art is to carry out the conversion of measurement pattern by the mode of menu or combination button, and these modes are also very easily in operation, and the while is the measurement pattern of the easy shortage mistake in using because of carelessness or background knowledge also.
Utility model content
The utility model embodiment discloses a kind of infrared temperature measurement apparatus, can guarantee that user precisely holds different temperatures measurement pattern ground, measures body surface temperature or human body temperature quickly and easily.
The utility model embodiment provides a kind of infrared temperature measurement apparatus, and described device comprises infrared temperature probe, body surface temperature measurement circuit, human body thermometric compensating circuit, microprocessor and normal open switch, wherein:
Described infrared temperature probe connects respectively the input end of described body surface temperature measurement circuit and the input end of described human body thermometric compensating circuit, the output terminal of described body surface temperature measurement circuit is connected respectively described microprocessor with the output terminal of described human body thermometric compensating circuit, and described normal open switch connects between described infrared temperature probe and described human body thermometric compensating circuit.
Wherein, described body surface temperature measurement circuit comprises pre-amplification circuit, mu balanced circuit and the A/D convertor circuit connecting in turn, wherein:
The input end of described pre-amplification circuit connects described infrared temperature probe, and the output terminal of described A/D convertor circuit connects described microprocessor.
Wherein, described human body thermometric compensating circuit comprises NTC thermistor.
Wherein, described infrared temperature measurement apparatus also comprises buzzing sheet, and described buzzing sheet connects described microprocessor.
Wherein, described infrared temperature measurement apparatus also comprises volume temperature probe cover, and described volume temperature probe cover is arranged on described infrared temperature probe.
Wherein, described infrared temperature measurement apparatus also comprises LCD display device, and described LCD display device is connected with described microprocessor.
Wherein, described LCD display device comprises lens, liquid crystal frame, LCD display and backlight, wherein:
Described LCD display is arranged in described liquid crystal frame, and described lens are arranged at the outside of described LCD display, and described backlight is arranged at the inner side of described LCD display.
Wherein, described LCD display device also comprises zebra bar and foam, and described zebra bar and foam are arranged between described LCD display and backlight.
Wherein, described infrared temperature measurement apparatus also comprises probe holder, for fixing described infrared temperature probe.
Wherein, described infrared temperature measurement apparatus also comprises probe heating radiator, and described probe radiator muff-joint is located on described infrared temperature probe.
The infrared temperature measurement apparatus that the utility model embodiment provides is by the input end of infrared temperature probe difference connector surface temperature measurement circuit and the input end of human body thermometric compensating circuit, and the output terminal of body surface temperature measurement circuit is connected respectively to microprocessor with the output terminal of human body thermometric compensating circuit, and normal open switch is connected between infrared temperature probe and human body thermometric compensating circuit, thereby can guarantee that user precisely holds different temperatures measurement pattern ground, measures body surface temperature or human body temperature quickly and easily.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of infrared temperature measurement apparatus of providing of the utility model embodiment;
Fig. 2 is the structural representation of the another kind of infrared temperature measurement apparatus that provides of the utility model embodiment;
Fig. 3 a, the 3b volume temperature probe cover that has been the installation that provides of the utility model embodiment and taken off the schematic diagram of the infrared test device of volume temperature probe cover;
Fig. 4 is the schematic diagram at the shown interface of the infrared temperature measurement apparatus that provides of the utility model embodiment LCD display when measuring body surface temperature;
Fig. 5 a, 5b is the schematic diagram at the shown interface of the infrared temperature measurement apparatus that provides of the utility model embodiment LCD display when measuring human body forehead temperature;
Fig. 6 a, 6b is the schematic diagram at the shown interface of the infrared temperature measurement apparatus that provides of the utility model embodiment LCD display when measuring human body ear cavity temperature.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, Fig. 1 shows the structural representation of a kind of infrared temperature measurement apparatus that the utility model embodiment provides.This infrared temperature measurement apparatus comprises volume temperature probe cover 1, probe encapsulate 2, probe metal cap 3, infrared temperature probe 4, probe heating radiator 5, ear temperature meter fore shell 6, lens 7, button 8, probe holder 9, liquid crystal frame 10, LCD display 11, zebra bar 12, backlight 13, foam 14, pcb board 15, LED lampshade 16, ear temperature meter fuselage 17, spring 18, action button 19, buzzing sheet 20, battery case 21 and Er Wen meter back cover 22 is set, wherein:
Infrared temperature probe 4 is arranged on probe holder 9, probe heating radiator 5 is set on infrared temperature probe 4, for dispelling the heat to infrared temperature probe 4, probe metal cap 3 is arranged at the front end of infrared temperature probe 4, probe encapsulate 2 is sheathed have been installed on the infrared temperature probe 4 of probe heating radiator 5, probe metal cap 3, and volume temperature probe cover 1 is removable installed on probe encapsulate 2, volume temperature probe cover 1, for when measuring forehead temperature, is pressed close to people's forehead.After infrared temperature probe 4 assembles, be arranged in ear temperature meter fore shell 6, and infrared temperature probe 4 wiring are welded on pcb board 15.LCD display device comprises lens 7, liquid crystal frame 10, LCD display 11 and backlight 13, LCD display device can also comprise zebra bar 12 and foam 14, wherein, LCD display 11 is arranged in liquid crystal frame 10, lens 7 are arranged at the outside of LCD display 11, backlight 13 is arranged at the inner side of LCD display 11, and zebra bar 12 and foam 14 are arranged between LCD display 11 and backlight 13.In addition, button 8 is set and for the parameter to whole system, arranges, for example, the temperature threshold of reporting to the police is set etc., buzzing sheet 20, for vibrations, for example, can, when the temperature of measuring reach threshold value, be reported to the police.Action button 19 is for changing body surface thermometric pattern and human body thermometric pattern.
Refer to Fig. 2, Fig. 2 shows the structural representation of the another kind of infrared temperature measurement apparatus that the utility model embodiment provides.This infrared temperature measurement apparatus can comprise infrared temperature probe 201, body surface temperature measurement circuit 202, human body thermometric compensating circuit 203, microprocessor 204, normal open switch 205, LCD display device 206 and buzzing sheet 207, wherein:
The input end of infrared temperature probe 201 difference connector surface temperature measurement circuits 202 and the input end of human body thermometric compensating circuit 203, the output terminal of body surface temperature measurement circuit 202 is connected respectively microprocessor 204 with the output terminal of human body thermometric compensating circuit 203, normal open switch 205 connects between infrared temperature probe 201 and human body thermometric compensating circuit 203, and microprocessor 204 also connects respectively LCD display device 206 and buzzing sheet 207.
Further, body surface temperature measurement circuit 202 can comprise pre-amplification circuit, mu balanced circuit and the A/D convertor circuit connecting in turn, and wherein, the input end of pre-amplification circuit connects infrared temperature probe 201, and the output terminal of A/D convertor circuit connects microprocessor 204.
Further, human body thermometric compensating circuit 203 can comprise NTC thermistor.Due to the body temperature of human body under normal circumstances time relatively stably, and during shell temperature along with ambient temperature changes, under high temperature, be heated can be higher than actual temperature for human body skin, low temperature be human body skin affected by cold air can be lower than actual temperature, in order to measure actual human body temperature under varying environment, NTC thermistor in human body thermometric compensating circuit 203 can be used for responding to extraneous room temperature, the environment temperature measured according to NTC thermistor, does a little compensation to somatometric temperature.
Further, normal open switch 205 is generally the touch-switch of often opening, for example, and keyswitch.Certainly, in other embodiment of the present utility model, normal open switch 205 can also be the other types switch of often opening.
Concrete principle and the using method of the infrared temperature measurement apparatus that the utility model embodiment provides are as follows: when needs are measured body surface temperature, press and measure button 19, infrared temperature measurement apparatus enters body surface temperature survey pattern, Fig. 4 shows the interface that LCD display shows under body surface temperature survey pattern, the closet body surface temperature survey pattern identification in figure, when needs are measured human surface temperature, unclamp measurement button 19 infrared temperature measurement apparatus and enter human body temperature measurement pattern: in the time need to measuring the temperature at the forehead position of human body, volume temperature probe cover 1 is contained in to (as shown in Figure 3 a) on infrared temperature probe 4, the interface that now LCD display shows as shown in Figure 5 a, then the disk on volume temperature probe cover 1 can be pressed close to forehead, infrared temperature measurement apparatus can be measured the temperature of forehead, and make LCD display show interface as shown in Figure 5 b, forehead zone bit in Fig. 5 a and 5b is human body forehead temperature measurement pattern sign, when needs are measured human body ear cavity temperature, volume temperature probe cover 1 is disassembled to (as shown in Figure 3 b) from infrared temperature probe 4, the interface that now LCD display shows as shown in Figure 6 a, then can press close to human body ear chamber by infrared temperature probe 4, infrared temperature measurement apparatus can be measured the temperature in human body ear chamber, and making LCD display show interface as shown in Figure 6 b, the ear zone bit in Fig. 6 a and 6b is human body ear cavity temperature measurement pattern sign.In sum, infrared temperature measurement apparatus of the present utility model can switch body surface temperature survey pattern and human body temperature measurement pattern by an operation push-button of often opening, the in the situation that of pressing operation button not, infrared temperature measurement apparatus is human body temperature measurement pattern, only in the situation that pushing button, infrared temperature measurement apparatus just enters body surface temperature survey pattern, thereby can guarantee that user precisely holds different temperatures measurement pattern ground, measures body surface temperature or human body temperature quickly and easily.
Module in the utility model embodiment device or unit can merge according to actual needs, divide and delete.
Module or unit described in the utility model embodiment, can pass through universal integrated circuit, CPU(Central Processing Unit for example, central processing unit), or by ASIC(Application Specific Integrated Circuit, special IC) realize.
The infrared temperature measurement apparatus above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.