CN100386607C - Non-contact infrared thermometer and its distance control method - Google Patents
Non-contact infrared thermometer and its distance control method Download PDFInfo
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- CN100386607C CN100386607C CNB2004100219087A CN200410021908A CN100386607C CN 100386607 C CN100386607 C CN 100386607C CN B2004100219087 A CNB2004100219087 A CN B2004100219087A CN 200410021908 A CN200410021908 A CN 200410021908A CN 100386607 C CN100386607 C CN 100386607C
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Abstract
The present invention relates to a non-contact infrared thermometer and a fixed-distance control method thereof, which belongs to the technical field of temperature measurement. The thermometer of the present invention mainly comprises an infrared radiation sensor, a fixed-distance control device, a processing unit, a display device, etc., wherein the fixed-distance control device of the present invention mainly comprises a luminous mechanism, an observing mechanism, etc., and the luminous mechanism and the observing mechanism are connected by a circuit or a wire. The fixed-distance control method of the present invention mainly makes beams transmitted by the luminous mechanism and an observing light path of the observing mechanism crossed in a specific zone of a preset distance in front of a probe. Facula or graphic symbols projected to a measured target can be observed clearly by the observing mechanism only when the measured target is positioned in the specific zone. The present invention has the advantages of simple structure, compactness, portability, accurate fixed-distance, fast measurement, convenient operation, low cost, etc., and the present invention has easy mass production and has convenient generalization and application. The present invention is suitable body temperature measurement for people or animals with different heights at a plurality of places and other temperature measuring requirements, and the present invention is the advanced, precise, economic and practical infrared thermometer.
Description
Technical field
The invention belongs to the thermometry field, particularly infrared temperature measurement apparatus and spacing control method thereof.
Background technology
China generally adopts mercury-in-glass thermometer the human or animal to be carried out the measurement of body temperature at present.Though the mercury-in-glass thermometer low price, the thermometric time is long, reading is inconvenient, it is not really safe to use, in case break people, animal and environment is all had bigger harm.Also having now and adopt electronic thermometer, though its reading is directly perceived, mainly is to measure temperature by temperature-sensing elements such as thermistors, because that thermistor and protective sleeve thereof reach thermal equilibrium is slower, causes shortcomings such as Measuring Time is long.
In recent years, bring into use convenient, fast, the accurate infrared thermometer of thermometric.Infrared thermometer is the infrared intensity of sending with the specific region of infrared radiation sensor detection human or animal health, then according to the corresponding relation of tested region surface temperature of health and body temp, measures the temperature of health.One of key of infrared thermometer thermometric reliability is the accurate location technology of the measuring distance between infrared radiation sensor and the tested zone." infra-red thermometer " as Chinese patent 98813387 mainly comprises intensity sensor, processing unit and control device, and the location technology of the measuring distance in its control device mainly is reflection or the focusing technology location that utilizes electromagnetic reflection technology and utilize light wave.In utilizing the lightwave technology location, the light beam of light emitted or parallel light path be by optical element, and receiving element is also all by accepting behind the optical element, thereby make this thermometer complex structure, add ons is many, volume is bigger than normal, cost is high, and it is bigger to apply difficulty.
Summary of the invention
The objective of the invention is weak point at existing infrared thermometer, a kind of non-contact infrared thermometer and spacing control method thereof are provided, it have simple in structure, small volume and less weight, safe and reliable, be easy to characteristics such as reading, spacing be accurately convenient, with low cost, be easy to produce in batches, infrared thermometer easy to utilize.
The object of the present invention is achieved like this: a kind of non-contact infrared thermometer and spacing control method thereof, its thermometer mainly comprises infrared radiation sensor, spacing control device, processing unit and display device etc., its spacing control device mainly comprises lighting means and sampling mechanism etc., the observation light path of lighting means emitted light beams and sampling mechanism must intersect in the specific region of predeterminable range in thermometer probe the place ahead, and display device mainly comprises display circuit and display screen etc.Infrared radiation sensor is used for detecting the infrared radiation intensity that human or animal or other measurands are sent in the zone of predeterminable range, and produces corresponding measuring-signal and export; Processing unit is connected by P.e.c. or lead with sensor, measuring-signal in order to receiving sensor output, and to measuring-signal amplify, after filtering, conversion etc. handle, calculate the surface temperature or the body temperature corresponding of measurand in the tested zone, be transferred to display device and on display screen, demonstrate the measurement Temperature numerical with surface temperature; The spacing control device is measured in predefined sensing range in order to control this infrared thermometer, to guarantee that non-contact infrared thermometer does not contact measurand and just can accurate spacing also reliably and accurately measure temperature.Housing of the present invention can be designed to outstanding and elongated hand-held shape or other shapes in lower end of head, and volume is small and exquisite, be convenient to operation.The head outshot claims probe again, can do tapered or other shapes, and infrared radiation sensor and spacing control device are arranged in the probe, and processing unit and display circuit are arranged in the housing, and display screen is arranged on the surface of shell, so that reading.Connect by P.e.c. or lead between infrared radiation sensor, processing unit and the display device.The present invention calculates temperature value and shown that on display screen it is simple in structure through processing unit processes by the infrared intensity of probe detection measurand, and is easy to use.
The present invention utilizes the spacing control device of light path principle design dexterously, mainly comprises lighting means, sampling mechanism etc.Lighting means is very simple, light source for the straight visible light beam of energy directional transmissions, the color of light beam is mainly the color that redness or blueness etc. are convenient to observe, light source is mainly LED source or lasing light emitter or other visible light sources, the light beam that light emitted goes out projects the hot spot that forms on the measurand and is circular or oval or other figure etc., perhaps graphical symbol; Sampling mechanism is also very simple, is mainly the combination of straight tubule or bending tube or optical fiber or viewport or straight tubule, bending tube, optical fiber, viewport etc.The principal character of its spacing control method is to make the observation light path of light beam that lighting means sends and sampling mechanism intersect at the predeterminable range place in probe the place ahead, but because the observation light path of light beam that lighting means sends and sampling mechanism all can not be unlimited thin, therefore, intersecting of they is not an absolute point but forms a specific region near predeterminable range.When lighting means is launched visible light beam, only be positioned at this specific region in measurand, the gauger could see this light beam clearly by sampling mechanism and be incident upon hot spot or the graphical symbol that forms on the measurand.So,, promptly show in this specific region before measurand must be in probe, thereby realized spacing control as long as the gauger sees this hot spot or graphical symbol by sampling mechanism.During thermometric, the gauger hands this thermometer, under open state, use the tested zone (as forehead) of alignment probe measurand, pressing the measurement key does not put, lighting means sends straight light beam and invests tested zone, simultaneously the gauger with the naked eye observes and adjusts the distance between the tested district (claiming measured target again) of the direction of thermometer probe in the hand and probe and measurand by sampling mechanism, when visible light spot on observing measured target or graphical symbol, decontrol and measure key, just measure and on display screen, demonstrate the temperature value of measurand immediately.Simple to operate, easy to use.
In sum, the principal character of the spacing control method of this non-contact infrared thermometer is:
1. the observation light path of lighting means emitted light beams and sampling mechanism is intersected in the specific region of predeterminable range in thermometer probe the place ahead;
2. launch under the condition of light beam at lighting means, have only the specific region that is positioned at predeterminable range when measured target, the gauger could see that clearly the emission light beam projects hot spot or the graphical symbol that forms on the measured target by sampling mechanism;
3. the gauger observes and adjusts the direction of thermometer probe and the distance between probe and the measured target by sampling mechanism, till the hot spot or graphical symbol seen clearly on the measured target, this moment, measured target must be in the specific region of predeterminable range in probe the place ahead, thereby had realized spacing control.
Though the structure of this spacing control device is simple, but can make things convenient for exactly thermometric apart from the location, guarantee that sensor detects the infrared intensity of measured target in the specific region of predeterminable range, avoid the measuring error that causes because of measurement and positioning is inaccurate in the temperature survey, guaranteed the reliability and the degree of accuracy of thermometric.For the ease of under various different situations, carrying out spacing control easily, in the light path of lighting means, can set up optical element (as convex lens etc.) and in sampling mechanism, can not set up optical element; Perhaps in the light path of lighting means, can not set up optical element and can set up optical element (as convex lens, catoptron etc.) in the light path at sampling mechanism; Perhaps in the light path of the light path of lighting means and sampling mechanism, all can set up optical element (as convex lens, catoptron etc.); Perhaps in the light path of lighting means and in the light path of sampling mechanism, all do not set up optical element.This just makes the present invention can be applicable to various different places easily, is convenient to measurement, applied range.
Characteristics such as after the present invention adopted technique scheme, that its non-contact infrared thermometer has was simple in structure, volume small volume and less weight, cost are low, simple to operate, health safe in utilization.Spacing control method particularly of the present invention, easy to operate, and can make sensor measurement accurate positioning, quick, and can in a few times in second, make the accurate spacing thermometric of infrared thermometer, thermometric is reliable and accurate.The present invention is easy to industrialized mass production, and is easy to utilize, is applicable to human or animal's the measurement of bldy temperature of multiple place and differing heights and the needs of other thermometrics, is a kind of first and then accurate, economic and practical infrared thermometer.
Description of drawings
Fig. 1 is a front schematic view of the present invention;
Fig. 2 is a side schematic view of the present invention;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the principle schematic that adopts straight tubule formula sampling mechanism in the spacing control device of the present invention;
Fig. 5 is the principle schematic that adopts bending tubular type sampling mechanism in the spacing control device of the present invention;
Fig. 6 is the principle schematic that adopts the optical fiber type sampling mechanism in the spacing control device of the present invention;
Fig. 7 adopts the principle schematic of observing the cellular type sampling mechanism in the spacing control device of the present invention.
Among the figure: 1 probing shell, 2 lighting means, 3 sampling mechanisms, 4 function keys, 5 waveguide pipe, 6 display screens, 7 switches/measurement key, 8 battery covers, 9 housings, 10 sensors, 11 probes, L predeterminable range.
Embodiment
Below in conjunction with embodiment, further specify the present invention.
Embodiment 1:
Shown in Fig. 1～4, a kind of non-contact infrared thermometer and spacing control method thereof, its thermometer mainly comprises infrared radiation sensor 10, spacing control device, processing unit and display device etc.Its spacing control device mainly comprises lighting means 2 and sampling mechanism 3 etc., the observation light path of lighting means emitted light beams and sampling mechanism must intersect in the specific region of predeterminable range in thermometer probe the place ahead, and its display device mainly comprises display circuit and LCDs 6 etc.The housing 9 of present embodiment is the elongated hand-held in the outstanding lower end of head, the outstanding probe 11 of head is taper, infrared sensor 10 and spacing control device are installed in the probe 11, processing unit and display circuit are installed in the housing 9, LCDs 6 is installed on housing 9 surfaces, on housing 9, also is provided with power switch/measurement key 7 and battery cover 8, battery is installed in the housing 9 in the battery cover 8, connects by P.e.c. or lead therebetween.The lighting means that is arranged in the probe 11 is a red light emitting diodes and makes its light that sends become the convex lens of directional light that launch red straight light beam, sampling mechanism is mainly tubule always.The principal character of its spacing control method is that the parallel beam that lighting means is sent is crossing at the A point at the predeterminable range L place in probe the place ahead with the observation light path of straight tubule formula sampling mechanism, because the parallel beam that lighting means sends all can not be unlimited thin with the observation light path of straight tubule formula sampling mechanism, so, they both crossing be not an absolute A point but between near specific region C, a B the A point.When lighting means is launched red straight light beam, have only when measured target between C, B in this specific region, the gauger can see just that by sampling mechanism the straight light beam of this redness is incident upon the hot spot that forms on the measured target.So,, promptly show between near C, the B the predeterminable range L before measured target is in probe 11 in this specific region, thereby realized spacing control as long as the gauger sees this hot spot by sampling mechanism.
Embodiment 2:
As shown in Figure 5, the principal character of this non-contact infrared thermometer and spacing control method thereof is, the sampling mechanism of spacing control device adopts the bending tubular type and sets up optical element (as catoptron) therein, to change the observation light path of sampling mechanism, the light path that makes lighting means emission light beam and the observation light path of bending tubular type sampling mechanism intersect between the predeterminable range L in probe 11 the place aheads neighbouring C, the B in this specific region, thereby have realized spacing control.Remaining part is identical with embodiment 1.
Embodiment 3:
As shown in Figure 6, the principal character of this non-contact infrared thermometer and spacing control method thereof is, the sampling mechanism of spacing control device adopts optical fiber type, to change the angle and the position of sampling mechanism observation light path, the light path that makes lighting means emission light beam and the observation light path of optical fiber type sampling mechanism intersect between the predeterminable range L in probe 11 the place aheads neighbouring C, the B in this specific region, thereby have realized spacing control.Remaining part is identical with embodiment 1.
Embodiment 4:
As shown in Figure 7, the principal character of this non-contact infrared thermometer and spacing control method thereof is, the sampling mechanism of spacing control device is formed by being positioned at former and later two positions and having common logical light viewport partly, the light path that makes lighting means emission light beam and the logical light light path of this observations cellular type sampling mechanism intersect between the predeterminable range L in 11 the place aheads of popping one's head in neighbouring C, the B in this specific region, thereby have realized spacing control.Remaining part is identical with embodiment 1.
Claims (5)
1. non-contact infrared thermometer, mainly comprise infrared radiation sensor (10), the spacing control device, processing unit and display device, it is characterized in that the spacing control device mainly comprises lighting means (2) and sampling mechanism (3), the observation light path of lighting means emitted light beams and sampling mechanism must intersect in the specific region of predeterminable range in thermometer probe the place ahead, display device mainly comprises display circuit and display screen (6), infrared radiation sensor (10) and spacing control device are installed in the probe (11), processing unit and display circuit are installed in the housing (9), display screen (6) is arranged on housing (9) surface, infrared radiation sensor (10), connect by P.e.c. or lead between processing unit and the display device.
2. according to the described non-contact infrared thermometer of claim 1, it is characterized in that the lighting means (2) of described spacing control device is the light source of the straight visible light beam of directional transmissions.
3. according to the described non-contact infrared thermometer of claim 1, it is characterized in that described sampling mechanism is straight tubule or bending tube or optical fiber or viewport.
4. according to the described non-contact infrared thermometer of claim 1, it is characterized in that setting up optical element in the light path of described lighting means and in the light path of sampling mechanism, do not set up optical element, perhaps in the light path of lighting means, do not set up optical element and set up optical element in the light path at sampling mechanism, perhaps in the light path of lighting means and in the light path of sampling mechanism, all set up optical element, perhaps in the light path of lighting means and in the light path of sampling mechanism, all do not set up optical element.
5. the spacing control method of a non-contact infrared thermometer is characterized in that:
(1) the observation light path of lighting means emitted light beams and sampling mechanism is intersected in the specific region of predeterminable range in thermometer probe (11) the place ahead;
(2) launch under the condition of light beam at lighting means, have only the specific region that is positioned at predeterminable range when measured target, the gauger could see that clearly the emission light beam projects hot spot or the graphical symbol that forms on the measured target by sampling mechanism;
(3) gauger observes by sampling mechanism and adjusts the direction of thermometer probe (11) and the distance between probe (11) and the measured target, till the hot spot or graphical symbol seen clearly on the measured target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100219087A CN100386607C (en) | 2004-02-23 | 2004-02-23 | Non-contact infrared thermometer and its distance control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100219087A CN100386607C (en) | 2004-02-23 | 2004-02-23 | Non-contact infrared thermometer and its distance control method |
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| CN1560575A CN1560575A (en) | 2005-01-05 |
| CN100386607C true CN100386607C (en) | 2008-05-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8282274B2 (en) * | 2009-06-30 | 2012-10-09 | Autovision Technology Limited | Remote temperature sensing device |
| CN105982650B (en) * | 2015-03-04 | 2019-02-15 | 百略医学科技股份有限公司 | Infra-red thermometer |
| CN105092052A (en) * | 2015-08-04 | 2015-11-25 | 上海霆善信息科技有限公司 | Non-contact type temperature measurement system based on card brushing trigger |
| CN106644085A (en) * | 2016-09-21 | 2017-05-10 | 广州视源电子科技股份有限公司 | Temperature measurement method and infrared thermometer |
| CN110013230A (en) * | 2018-01-08 | 2019-07-16 | 曹亮 | A kind of temperature measuring equipment and method using multiple infrared sensors |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284162A (en) * | 1998-01-30 | 2001-02-14 | 拉特尼卡有限公司 | Infrarecd thermometer |
| US6196714B1 (en) * | 1996-07-05 | 2001-03-06 | La Tecnica S.R.L. | Infrared thermometer comprising optical aiming system |
| JP2001281060A (en) * | 2000-03-28 | 2001-10-10 | Shimadzu Corp | Infrared radiation temperature meter |
| JP2002286550A (en) * | 2001-03-23 | 2002-10-03 | Hioki Ee Corp | Radiation thermometer |
-
2004
- 2004-02-23 CN CNB2004100219087A patent/CN100386607C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196714B1 (en) * | 1996-07-05 | 2001-03-06 | La Tecnica S.R.L. | Infrared thermometer comprising optical aiming system |
| CN1284162A (en) * | 1998-01-30 | 2001-02-14 | 拉特尼卡有限公司 | Infrarecd thermometer |
| JP2001281060A (en) * | 2000-03-28 | 2001-10-10 | Shimadzu Corp | Infrared radiation temperature meter |
| JP2002286550A (en) * | 2001-03-23 | 2002-10-03 | Hioki Ee Corp | Radiation thermometer |
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