CN213688672U

CN213688672U - Thermometer with visible light indication

Info

Publication number: CN213688672U
Application number: CN202021231213.2U
Authority: CN
Inventors: 黄新华
Original assignee: Dongguan City Acer Austrian Medical Technology Co ltd
Current assignee: Guangdong Naying Micro Sensing Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-06-28
Publication date: 2021-07-13
Anticipated expiration: 2030-06-28

Abstract

The embodiment of the utility model provides a thermoscope with visible light is instructed, include: the infrared temperature measuring unit, the visible light emitting unit and the distance measuring unit are arranged on the base; the infrared temperature measurement unit comprises an infrared sensor, a visible light reflector and a convex lens which are sequentially arranged, the visible light reflector forms a preset angle relative to a light path between the infrared sensor and the convex lens, and the visible light reflector is used for reflecting visible light emitted by the visible light emission unit to the convex lens and transmitting infrared light; the distance measuring unit is used for measuring the distance between the measured object and the temperature measuring instrument; the visible light emitting unit is used for emitting visible light to form a visible light spot on the measured object when the measured object is positioned in a preset temperature measuring range; the infrared temperature measuring unit is used for measuring the temperature of the measured object. The utility model discloses a thermoscope can know fast whether measured object is in at the exact forehead measuring position at present, not only can improve body temperature measurement efficiency, has also guaranteed temperature measurement accuracy etc..

Description

Thermometer with visible light indication

Technical Field

The utility model relates to a body temperature measurement technical field especially relates to a thermoscope with visible light is instructed.

Background

The forehead thermometer or the forehead thermometer and the like mainly use a non-contact mode to measure the temperature of the forehead of a human body, and the principle of the forehead thermometer or the forehead thermometer and the like is mainly to obtain the surface temperature of the human body by measuring the infrared energy radiated by a measured object. Under normal conditions, the normal temperature of human body is between 35-37 ℃. However, most thermometers on the market do not have a corresponding temperature measurement area indicating function, so that a measured object does not know whether the measured object is aligned with a temperature measurement area in the measurement process, and further worry about whether the measurement result is accurate or not. Meanwhile, in order to ensure the accuracy of the measured temperature, the inspector often needs to manually align the forehead of the tested object and then press the key to perform temperature measurement acquisition, so that the whole temperature measurement efficiency is low, and particularly, the temperature measurement efficiency is greatly reduced for the occasions with more people flow.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a thermometer with visible light indication to overcome the shortcomings in the prior art.

An embodiment of the utility model provides a thermoscope with visible light is instructed, include: the infrared temperature measurement unit comprises an infrared sensor, a visible light reflector and a convex lens which are sequentially arranged, the visible light reflector forms a preset angle relative to a light path between the infrared sensor and the convex lens, and the visible light reflector is used for reflecting visible light emitted by the visible light emitting unit to the convex lens and transmitting infrared light;

the distance measuring unit is used for measuring the distance between the measured object and the temperature measuring instrument;

the visible light emitting unit is used for emitting visible light to form a visible light spot on the measured object when the measured object is positioned in a preset temperature measuring range;

the infrared temperature measuring unit is used for measuring the temperature of the measured object in the preset temperature measuring range.

In an embodiment, the above thermometer with visible light indication further includes: the first display unit and the second display unit are respectively positioned on the front side and the rear side of the shell of the thermometer and are respectively used for displaying temperature measurement data.

In one embodiment, the distance measuring unit is an ultrasonic unit or a laser distance measuring unit.

In one embodiment, the ultrasonic unit comprises an ultrasonic transmitter and an ultrasonic receiver, wherein the ultrasonic transmitter and the ultrasonic receiver are arranged side by side, and the infrared thermometry unit is located right above the ultrasonic transmitter and the ultrasonic receiver which are arranged side by side.

In one embodiment, the predetermined angle is a 45 degree angle.

In one embodiment, the front side of the housing of the thermometer employs a colored panel, wherein the reflectance of the colored panel is greater than a preset reflectance.

In the above embodiment, the front side of the housing further includes a transparent panel stacked with the colored panel and disposed therein, and the transparent panel is used for limiting the infrared temperature measuring unit and the distance measuring unit in the housing.

In one embodiment, the front side of the shell of the thermometer comprises a colored panel arranged inside and a transparent panel laminated with the colored panel and arranged outside, wherein the inner side surface of the transparent panel is provided with a reflecting film with a preset thickness.

In one embodiment, the visible light emitting unit includes a laser diode and a laser driver for driving the laser diode to emit laser light.

In one embodiment, the preset temperature measurement range is 20cm to 60cm away from the temperature measuring instrument.

The embodiment of the utility model has the following advantage:

the utility model discloses a thermoscope with visible light is instructed combines infrared temperature measurement unit and range unit, carries out automatic temperature measurement to the measurand that gets into in the preset temperature measurement scope through measuring the distance of measurand and utilizing infrared temperature measurement to utilize visible light emission unit to launch the visible light from the light path of infrared light inside in order to form the visible light spot on the measurand, so monitoring personnel can judge whether aim at the forehead center of measurand through this visible light spot; when the front side of the shell of the temperature measuring instrument has a mirror reflection function or is provided with the help of an external reflector, particularly under the automatic temperature measuring occasion, the tested object can quickly know whether the tested object is at the correct forehead measuring position or not, so that the body temperature measuring efficiency is improved, and meanwhile, the accuracy of a temperature measuring result is also ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows a schematic structural diagram of a thermometer with visible light indication according to an embodiment of the present invention;

fig. 2 shows a schematic view of a visible mirror arrangement of a thermometer with visible light indication according to an embodiment of the present invention;

fig. 3 is a schematic diagram showing a temperature measuring circuit of the temperature measuring instrument with visible light indication according to the embodiment of the present invention;

fig. 4(a) and 4(b) show another schematic structural diagram with a double-sided display of a thermometer with visible light indication according to an embodiment of the present invention;

fig. 5 shows a schematic diagram of a handheld temperature measuring instrument with visible light indication according to an embodiment of the present invention.

Description of the main element symbols:

10-a temperature measuring instrument; 100-a control unit; 110-an infrared temperature measuring unit; 120-a ranging unit; 121-an ultrasonic transmitter; 122-an ultrasonic receiver; 130-a visible light emitting unit; 111-an infrared sensor; 112-visible light reflector; 113-convex lens; 140-a first display unit; 150-a second display unit; a-a first display area; b-a second display area.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, the present embodiment provides a thermometer 10 with visible light indication, through emitting visible light, a monitoring person can determine whether to align with the forehead center of a measured object through the visible light indication, and for some occasions such as self-service temperature measurement, the measured object can also align with a position where the forehead center should be located quickly according to the visible light indication, and the measurement result is more accurate.

In the present embodiment, the thermometer 10 with visible light indication includes a housing formed by a plurality of side walls, and an infrared temperature measuring unit 110, a distance measuring unit 120, a visible light emitting unit 130, and the like, which are located in the housing. Exemplarily, the infrared temperature measuring unit 110 is mainly used for measuring the temperature of the measured object located in the preset temperature measuring range. Exemplarily, as shown in fig. 2, the infrared temperature measuring unit 110 includes an infrared sensor 111, a visible light reflector 112 and a convex lens 113, which are sequentially disposed, wherein an optical path is formed between the infrared sensor 111 and the convex lens 113, and it can be understood that the optical path refers to a path through which external infrared radiation passes after being focused by the convex lens 113 and then passes through the infrared sensor 111. It should be understood that the infrared temperature measuring unit further includes a signal conversion circuit and the like connected to the infrared sensor, and the details thereof will not be described herein in detail, considering that these circuits are all basic components of the infrared temperature measuring unit.

In this embodiment, a visible light reflector 112 is obliquely disposed in the light path, wherein the visible light reflector 112 forms a predetermined angle with respect to the light path between the infrared sensor 111 and the convex lens 113. The visible light reflector 112 is used for reflecting the visible light emitted from the visible light emitting unit 130 to the convex lens 113, and then emitting the visible light to the outside through the convex lens 113, so that a visible light spot can be formed on the measured object. In one embodiment, the visible light reflector 112 is typically at a 45 degree angle with respect to the light path, such that visible light will be incident perpendicularly on the visible light reflector 112 and light reflected by the visible light reflector 112 will be emitted in parallel along the light path. Of course, the preset angle can be adjusted correspondingly according to actual requirements. In addition, the visible light reflector 112 is also used for transmitting infrared light when performing infrared temperature measurement, i.e. infrared light can pass through the visible light reflector 112. In practical applications, considering that the visible light reflector 112 may attenuate a small amount of infrared light energy, the detected infrared light may be compensated by software, so as to eliminate the influence of the visible light reflector on the temperature measurement result as much as possible.

Since the spectral range of infrared light is 2.5 μm to 15 μm and the spectral range of visible light is 400nm to 800nm, generally, the operating spectral range of the infrared sensor 111 is mainly 8 μm to 14 μm; visible light with a typical wavelength of 500nm may be used in this example. Therefore, because the wavelengths of different types of light are different, the visible light reflector 112 can select corresponding plating layers according to the different light bands, so as to transmit the infrared light and reflect the visible light, thereby achieving the purpose of filtering the light.

It should be noted that in the present embodiment, the infrared light and the visible light pass through the same optical path, and the infrared light and the visible light are transmitted coaxially in the thermometer 10. In addition, compared with the existing structure with different optical axes, the structure does not need to be provided with two mutually independent optical paths, and does not need to separately provide a through hole for the visible light emitted outwards, so that the structure is more compact and attractive in appearance.

It can be understood that the visible light spot can be used for indicating the position of the forehead center to be set, so that the measured object can quickly align the forehead center of the measured object to the visible light spot, or monitoring personnel can quickly judge according to the visible light spot, and therefore the temperature measurement efficiency is improved, the temperature measurement accuracy is guaranteed, and the like.

The distance measuring unit 120 is mainly used for measuring the distance between the object to be measured and the temperature measuring instrument 10, and can determine whether the object to be measured enters a preset temperature measuring range. The distance measuring unit 120 may exemplarily include, but is not limited to, an ultrasonic unit or a laser distance measuring unit. It is understood that the preset temperature measurement range refers to a preset farthest distance, or a preset closest distance and a preset farthest distance, at which the thermometer 10 can normally measure the temperature of the target, and the preset farthest distance may be adjusted according to the position of the infrared temperature measurement unit 110.

For example, as shown in fig. 2, the preset temperature measurement range may be set to be 20cm to 60cm from the thermometer 10. Therefore, if the distance between the object to be measured and the thermometer 10 is not more than 60cm, it can be determined that the object to be measured enters the temperature measurement range. If the measured object is gradually close until the distance is less than 20cm, the measured object can be indicated to be too close. It can be understood that the temperature measuring range can be set according to actual requirements, and is not limited herein.

In this embodiment, the distance measuring unit 120 is an ultrasonic unit, as shown in fig. 1. The ultrasonic unit mainly includes an ultrasonic transmitter 121 and an ultrasonic receiver 122. When the distance measurement is performed, the ultrasonic transmitter 121 transmits an ultrasonic wave to the outside, and the ultrasonic receiver 122 receives an ultrasonic signal reflected due to the blockage of the object to be measured, so that the distance between the object to be measured and the temperature measuring instrument 10 can be calculated by using the time difference between the transmission and the reflection of the ultrasonic signal. In some embodiments, a laser ranging unit may be employed, for example. For example, the laser ranging unit may include a laser transmitter and a laser receiver, or a laser displacement sensor, etc.

In a preferred embodiment, the infrared temperature measuring unit 110 and the visible light emitting unit 130 can be in a sleep state (or a low power consumption state) when the measured object does not enter the temperature measuring range, and the infrared temperature measuring unit 110 and the visible light emitting unit 130 are switched to a normal operating state when the measured object enters the temperature measuring range, where the normal operating state refers to the infrared temperature measuring unit 110 performing infrared temperature measurement; the visible light emitting unit 130 performs visible light emission. It can be understood that each unit in the sleep state can greatly reduce the power consumption of the system, and especially when the temperature measuring instrument 10 uses a backup battery, the cruising ability of the temperature measuring instrument 10 can be improved.

The visible light emitting unit 130 includes a laser diode and a laser driver for driving the laser diode to emit a light beam. For example, the laser driver may employ a driving circuit composed of a triode or the like; the laser diode may be a diode emitting red light, or the like.

In this embodiment, the infrared temperature measuring unit 110 and the distance measuring unit 120 are both located at the front side of the housing, and the front side is also provided with through holes corresponding to the units, so that signals can be transmitted or received without attenuation. Exemplarily, as shown in fig. 1, the ultrasonic transmitter 121 and the ultrasonic receiver 122 on the front side may be disposed side by side, and the infrared thermometry unit 110 is located above or below the ultrasonic transmitter 121 and the ultrasonic receiver 122 disposed side by side.

Preferably, the infrared thermometry unit 110 is located directly above the ultrasonic transmitter 121 and the ultrasonic receiver 122, as shown in FIG. 1. It can be understood that, when the face of the object to be measured is approaching the thermometer 10, the face of the object to be measured can be detected and the distance between the face and the thermometer 10 can be measured continuously, because the distance between the infrared temperature measuring unit 110 located right above and the ultrasonic transmitter 121 and the ultrasonic receiver 122 is closer to the distance between the forehead and the two faces, on the premise that the object to be measured is aligned with the visible light point, the surface temperature measured by the infrared temperature measuring unit 110 is the surface temperature of the center of the forehead of the object to be measured.

It is understood that the thermometer 10 further includes a control unit 100 in the housing, as shown in fig. 3, the control unit 100 is electrically connected to the infrared temperature measuring unit 110, the distance measuring unit 120 and the visible light emitting unit 130. The control unit 100 can enable the infrared temperature measuring unit 110, the distance measuring unit 120, the visible light emitting unit 130 and other units to work cooperatively, so as to realize the functions of infrared temperature measurement in a preset temperature measuring area, low power consumption state switching and the like. Exemplarily, the control unit 100 may be implemented by an MCU having functions of logic operation and comparison, signal triggering, and the like, or may be implemented by circuits such as a comparator and a logic gate assembly, and may be specifically selected according to actual requirements. The thermometer 10 may be powered by an accessed system power supply, or may be powered by a backup battery, and is not limited thereto.

In an alternative embodiment, the front side of the housing is further provided with a reflector having a reflectivity greater than a predetermined reflectivity, so that when the object to be measured faces the front side of the thermometer 10, the face of the object can be observed through the reflector, thereby facilitating the rapid adjustment of the forehead position according to the visible light emitted from the visible light emitting unit 130.

As a simplest way, a mirror is directly arranged on the outer surface of the front side of the housing (e.g. upper left corner or upper right corner, etc.) to achieve a specular reflection effect. In another alternative, the front side itself may also be used as a mirror, i.e. a mirror image of the user when looking at the front side. For example, a colored panel, such as a black panel, may be used, and the inner surface of the colored panel is coated with a reflective layer having a reflectivity greater than a predetermined reflectivity for achieving the reflective effect. The preset reflectivity can ensure that the tested object can see the mirror image of the tested object through the colored panel.

It will be appreciated that the internal configuration of the thermometer 10 will not be exposed directly to the user when the front side of the panel with the color will have a lower light transmittance. This also provides the thermometer 10 with some concealment and overall better aesthetics. Optionally, the front side may further include a transparent panel disposed inside and used for limiting the infrared temperature measuring unit and the distance measuring unit, wherein the transparent panel and the colored panel are stacked.

In another embodiment, the front side comprises a colored panel disposed inside and a transparent panel disposed outside, such as an acrylic or PC board (i.e., polycarbonate board) or the like. Wherein, the luminousness outside the coloured panel is little, and coloured panel mainly used carries on spacingly to infrared temperature measurement unit and the range unit in the casing. And for the transparent panel, a reflective film having a predetermined thickness is provided on an inner surface thereof, thereby forming the reflector. For the predetermined thickness, it should be able to make the display content of the display unit inside the casing be able to penetrate through the panel layer coated with the thin film and be seen by the measured object. Similarly, the colored panel arranged inside can not only limit, but also realize light-proof, so that the internal structure of the thermometer 10 can not be directly exposed to the user, and the thermometer 10 can have certain concealment and more beautiful appearance.

Generally, the above-mentioned thermometer 10 with mirror reflection function can be of a set-up structure, especially in some self-service temperature measurement occasions, the object to be measured can quickly aim the forehead at the visible light spot, etc. Of course, as another embodiment, the temperature measuring instrument 10 may also be a handheld structure, so that for a monitoring person, when measuring the temperature of others by using the temperature measuring instrument 10, it can also be determined whether the forehead center of the object to be measured is aligned with the visible light region, so as to ensure the accuracy of the temperature measurement result.

Further preferably, the thermometer 10 further comprises a first display unit 140 and a second display unit 150 respectively located at the front side and the rear side of the housing. Exemplarily, as shown in fig. 4(a) and 4(B), the first display unit 140 and the second display unit 150 may be used to display data, such as measured temperature values, in the first display area a on the front side and the second display area B on the rear side, respectively. For example, the first display unit 140 and the second display unit 150 may be implemented using, for example, a digital tube or a liquid crystal display. Furthermore, optionally, the rear side of the thermometer may also be provided with several keys for providing parameter setting functions, as shown in fig. 4 (b).

It can be understood that after the temperature measurement of the tested object is completed, the tested object can immediately check the self measurement result on the front side, and the second display area B on the rear side also displays the temperature measurement result, so that the tested object can be conveniently checked by a tester and the like.

It should be noted that the structure of the thermometer 10 is not limited to the rectangular structure shown in fig. 1, but may be a handheld temperature measuring structure, as shown in fig. 5. In the case of a handheld structure, the distance measuring unit may be, for example, a laser distance measuring unit with a small space occupation, but is not limited thereto. In addition, the handheld thermometer 10 may also be provided with a double-sided display function, so that people at different positions can conveniently check the temperature.

The temperature measuring instrument 10 with the double-sided display function of the embodiment is convenient for monitoring personnel to check, and for a user to be measured, when the user enters a temperature measuring area, automatic non-contact temperature measurement can be realized, the user does not need to actively inquire the measuring personnel to know the measuring result, and the user experience can be greatly improved.

The utility model discloses thermoscope with visible light is instructed carries out non-contact temperature measurement automatically through measuring the measured object's distance and utilizing infrared temperature measurement to get into the measured object of predetermineeing the temperature measurement within range, utilizes visible light to instruct simultaneously, no matter be to monitoring personnel or measured object oneself, whether can all know rapidly whether aim at the correct forehead and measure the position to guarantee the rate of accuracy of forehead temperature measurement. In addition, the temperature measuring instrument of the embodiment also realizes a double-light coaxial technology, does not need human intervention in the whole temperature measuring process, and can improve the temperature measuring efficiency and further improve the user experience and the like.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A thermometer with visible light indication, comprising: the infrared temperature measurement unit comprises an infrared sensor, a visible light reflector and a convex lens which are sequentially arranged, the visible light reflector forms a preset angle relative to a light path between the infrared sensor and the convex lens, and the visible light reflector is used for reflecting visible light emitted by the visible light emitting unit to the convex lens and transmitting infrared light;

2. The thermometer with visible light indication of claim 1, further comprising: the first display unit and the second display unit are respectively positioned on the front side and the rear side of the shell of the thermometer and are respectively used for displaying temperature measurement data.

3. A thermometer with visible light indication according to claim 1 or 2, characterised in that said distance measuring unit is an ultrasonic unit or a laser distance measuring unit.

4. The thermometer with visible light indication of claim 3, wherein said ultrasonic unit comprises an ultrasonic transmitter and an ultrasonic receiver, wherein said ultrasonic transmitter and said ultrasonic receiver are arranged side by side, and said infrared thermometry unit is located directly above said ultrasonic transmitter and said ultrasonic receiver arranged side by side.

5. A thermometer with visible light indication according to claim 1 or 2 wherein said preset angle is 45 degree.

6. The thermometer with visible light indication of claim 1, wherein the front side of the housing of said thermometer is a colored panel, wherein the reflectivity of said colored panel is greater than the preset reflectivity.

7. The thermometer with visible light indication of claim 6, wherein the front side of the housing of said thermometer further comprises a transparent panel laminated with and disposed inside said colored panel, said transparent panel being used for limiting the infrared temperature measuring unit and the distance measuring unit inside the housing.

8. The thermometer with visible light indication of claim 1, wherein the front side of the housing of the thermometer comprises a colored panel disposed inside and a transparent panel disposed outside in a laminated manner with the colored panel, wherein the inner side surface of the transparent panel is provided with a reflective film with a predetermined thickness.

9. The thermometer with visible light indication as claimed in claim 1 or 2, wherein said visible light emitting unit comprises a laser diode and a laser driver for driving said laser diode to emit laser light.

10. The thermometer with visible light indication of claim 2, wherein said predetermined temperature range is 20cm to 60cm from said thermometer.