JP2014018334A - Radiation thermometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation thermometer for automatically measuring a body temperature at an accurate measurement point in a non-contact manner.SOLUTION: A radiation thermometer has a camera, a non-contact temperature sensor, an arithmetic processing part for calculating a body temperature of a subject by a measurement signal obtained from the temperature sensor, and a display for displaying an image captured by the camera and other information. In body temperature measurement, a measurement point or a measurement area, and a moving image captured by the camera are displayed in the display. A relative positional relationship between a thermometer and a face of the subject is recognized by the arithmetic processing part with image data sent from the camera and a state in which a position of the face of the subject relative to the thermometer enters a predetermined range is used as a trigger to start automatic measurement. Since the arithmetic processing part causes the start of measurement when the face of the subject enters the predetermined range, a measurement point can be adjusted to a correct position and accurate measurement of a body temperature can be realized.

Description

The present invention relates to a non-contact thermometer that measures the body temperature of a human body.

Due to the recent epidemic of new influenza, cases of measuring body temperature at the entrance of facilities where people gather are increasing for the purpose of preventing the spread of infection.

As a method for measuring body temperature, a method of measuring the temperature of the forehead of a person to be measured with a radiation thermometer that is short-time, non-contact and hygienic is often used. Radiation thermometers include hand-held type and stationary mirror type.

JP2011-169741A JP2011-179986A

When measuring the temperature of a part of the face, such as the forehead, using a handheld radiation thermometer, it is difficult to grasp the position of the measurement point when used alone, and the body temperature is measured at the desired position. It is difficult to do. In addition, when the measurement person and the person to be measured are used, the position of the measurement point can be accurately determined, but it is necessary to face the person to be measured, which is not desirable from the viewpoint of preventing the spread of influenza. Furthermore, in the case of a hand-held radiation thermometer, it is necessary to touch the main body by hand, which is a sanitary problem.

In the case of a mirror type radiation thermometer, the above problem is solved, but there is the following problem. In general, when a distance sensor detects an object within a certain distance, a mirror-type radiation thermometer automatically starts and ends body temperature measurement. The distance sensor detects even if it is not a forehead or a part of the human body, and there is a problem that body temperature is measured even if it is not a correct measurement point. It is necessary for the person to be measured to determine whether or not the measurement has been performed at the correct measurement point, and it is necessary to know the characteristics of the mirror type radiation thermometer. Therefore, even if the body temperature is abnormal, there is a risk that it will be overlooked if used by a person who is not accustomed to using a mirror type radiation thermometer.

In order to solve the above problems, the thermometer according to the present invention is obtained from a camera for photographing the face of the person to be measured, a temperature sensor for measuring the surface temperature of the face of the person to be measured in a non-contact manner, and the temperature sensor. An arithmetic processing unit that calculates the body temperature of the person to be measured from a measurement signal, an image captured by the camera, and a display that displays the body temperature of the person to be measured. At the time of measuring body temperature, a measurement point or measurement area and a moving image taken by the camera are displayed on the display.

The arithmetic processing unit recognizes a relative positional relationship between the thermometer and the face of the person to be measured with image data from the camera, and the relative position of the face of the person to be measured with respect to the thermometer is within a predetermined range. The measurement is automatically started when triggered by entering.

Since the measurement processing is started when the face of the person to be measured falls within a predetermined range by the arithmetic processing unit, the measurement point can be adjusted to the correct position, and accurate body temperature measurement is possible.

Further, by making the image displayed on the display a still image after the start of measurement, it is easy to confirm whether or not the body temperature can be measured at the correct measurement point at the end of the measurement.

It is an external view of implementation of this invention. It is a system block diagram of implementation of this invention. It is a schematic diagram which shows the measurement point of implementation of this invention. It is a schematic diagram which shows the measurement area of implementation of this invention.

FIG. 1 shows an embodiment of a radiation thermometer 1 of the present invention. The radiation thermometer 1 includes a temperature sensor 2, a camera 3, a display 4, an arithmetic processing unit 5, a control unit 6, and a main body case 7.

The temperature sensor 2 is a sensor that measures the surface temperature without contact. It is installed on the front surface of the main body case 7 and measures the temperature of the body surface of the measurement subject.

The camera 4 photographs the face of the person to be measured with a moving image. The main body case 7 is installed in the same direction as the body surface temperature sensor 2. The captured image data is sent to the control unit 6.

The display 4 is installed on the front surface of the main body case 7. The display 4 is controlled by the control unit 6. Before the start of body temperature measurement, the real-time face of the person to be measured and the measurement point 8 or the measurement area 9 taken by the camera 3 are displayed as a moving image. Examples of the measurement point 8 and the measurement area 9 are shown in FIGS. After the start of body temperature measurement, the face of the person to be measured, the measurement point 8 or the measurement area 9, and the measurement result of the body temperature are displayed.

The arithmetic processing unit 5 calculates the body temperature of the measurement subject from the data of the temperature sensor 2 and sends the calculation result to the control unit 6.

The arithmetic processing unit 5 recognizes the relative positional relationship between the temperature sensor 2 and the face of the person to be measured by image processing using the image data from the control unit 6, and the relative position of the face is within a predetermined range. When is confirmed, a temperature measurement start trigger is sent to the control unit.

When recognizing the temperature measurement start trigger from the arithmetic processing unit 5, the control unit 6 determines that the body temperature data from the arithmetic processing unit 5 is stable, and ends the temperature measurement. After the temperature measurement is finished, the display 4 displays the temperature measurement result, the face image from the camera 3 when the temperature measurement is finished, and the measurement point 8 or the measurement area 9.

DESCRIPTION OF SYMBOLS 1 Radiation thermometer 2 Temperature sensor 3 Camera 4 Display 5 Arithmetic processing part 6 Control part 7 Main body case 8 Measurement point 9 Measurement area

Claims (3)

A camera that captures the face of the person being measured;
A temperature sensor that measures the surface temperature of the face of the person being measured in a non-contact manner;
An arithmetic processing unit for calculating the body temperature of the person to be measured from a measurement signal obtained from the temperature sensor;
In a thermometer comprising an image photographed by the camera and a display for displaying the body temperature of the measurement subject,
The arithmetic processing unit recognizes a relative positional relationship between the thermometer and the face of the person to be measured with image data from the camera, and the relative position of the face of the person to be measured is within a predetermined range with respect to the thermometer. A thermometer that starts measurement automatically when it enters. The thermometer according to claim 1, wherein a measurement point or a measurement area of the temperature sensor is displayed on the display. The thermometer according to claim 1, wherein an image displayed on the display before the start of measurement is a moving image, and is a still image after the start of measurement.