JP2013198625A - Height measuring method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve downsizing and weight reduction without installing an ultrasonic range finder directly above a person taking a medical checkup, in a height measuring method utilizing the ultrasonic range finder and its device.SOLUTION: A height meter (body part) in which an ultrasonic range finder is incorporated vertically upward is prepared, and by checking a difference between "a distance from the ultrasonic range finder to the height meter (body part) folded at a ceiling surface" and "a distance from the ultrasonic range finder to the parietal region of a person taking a medical checkup folded at the ceiling surface, the body height of the person taking the medical checkup is measured.

Description

  The present invention relates to a height measuring method using a distance measuring method using ultrasonic waves and an apparatus therefor.

  The conventional method of measuring height using an ultrasonic distance meter has been to install an ultrasonic distance meter directly above the standing position of the patient being examined, from the ultrasonic distance meter that is known in advance to the surface on which the patient is standing. By subtracting the distance from the ultrasonic distance meter to the top of the examinee from the distance, the value is usually used as the height.

  In this case, a means for fixing the ultrasonic distance meter directly above the standing position of the medical examinee is necessary, and a yagura or the like is necessary. This yagra and the like are required to have a height exceeding the height of the medical examinee, and there are drawbacks such as an increase in the size of the apparatus itself.

  For this reason, the apparatus must be disassembled, stored, assembled, etc., and it is inconvenient to move to a medical examinee and measure the height.

JP-A-7-67857 JP-A-10-211189 JP-A-11-47116

Conventional methods for measuring height using an ultrasonic distance meter have been to place the ultrasonic distance meter downward directly above the medical examinee, and from the distance from the ultrasonic distance meter to the floor surface, from the ultrasonic distance meter to the floor surface. Normally, the height obtained by subtracting the distance to the top of the head of the medical examinee standing at is the height.
In this case, it is necessary to use a yagura or the like for fixing the ultrasonic distance meter directly above the medical examinee, and there are drawbacks such as an increase in the size of the device itself. For this reason, the apparatus must be disassembled, stored, assembled, etc., and it is inconvenient to move to a medical examinee and measure the height.

  The problem to be solved by the present invention is to measure the height using an ultrasonic distance meter, which does not place an ultrasonic distance meter directly above a medical examinee, and realizes downsizing by eliminating structures such as yagura. It is to provide a method.

In the present invention, first, a height meter (main body) incorporating an ultrasonic distance meter vertically upward is prepared and installed on the floor surface. And when using in a room with a ceiling that sufficiently reflects ultrasound, prior to the health checkup, operate the ultrasound distance meter while the examinee is not on the height meter. Measure the distance from the height meter (main body) folded on the ceiling surface. Next, after the examinee stands upright at a predetermined position on the height meter, the ultrasonic rangefinder is activated again, and "the distance from the ultrasonic rangefinder to the top of the examinee's head turned back on the ceiling surface" Measure. Lastly, it is obtained by subtracting the "distance from the ultrasonic distance meter to the top of the medical examinee folded back from the ceiling surface" from the "distance from the ultrasonic distance meter to the height meter (main body)". The value is the height of the examinee.
In addition, in a space without a ceiling or a space where reflection of ultrasonic waves is not sufficient, the above-described measurement is performed by installing a reflector or a corner reflector that sufficiently reflects ultrasonic waves directly above the height meter. be able to.
Also, if the measured value of “distance from the ultrasonic distance meter to the top of the medical examinee on the ceiling surface” is shorter than the distance to the ceiling surface, in other words, “from the ultrasonic distance meter to the ceiling surface. If it is less than half of the “distance to the folded height meter (main body)”, it means that the examinee is blocking the propagation path of the ultrasonic wave emitted by the ultrasonic distance meter, that is, the examinee is in the correct position. It can be detected that it is not upright.

According to the present invention, only a height meter (main body) that is installed flat on the floor surface and that incorporates an ultrasonic distance meter, or a separate reflector or the like is required, and the ultrasonic distance meter that achieves miniaturization is realized. It is possible to provide a method for measuring height using the.

Explanatory drawing which shows a fundamental Example. Explanatory drawing which shows the operation | movement content of a basic Example. Explanatory drawing which shows the Example in the case of using a reflecting plate. Explanatory drawing which shows the Example in the case of using a corner reflector. Explanatory drawing which shows the operation | movement content of the Example in the case of using a corner reflector.

  Embodiments will be described with reference to the drawings.

FIG. 1 shows a basic embodiment of the present invention, and FIG. 2 shows its operation contents.
The present invention is basically implemented by installing a “height meter (main body)” incorporating an ultrasonic distance meter vertically upward.
When implementing the present invention in a room with a ceiling that sufficiently reflects ultrasonic waves, prior to the health checkup, first, check that the person being examined is not on the “height scale (main body)”. ) ”Is operated and the“ distance from the ultrasonic distance meter to the height meter (main body) folded back on the ceiling surface ”is measured. The movement of the apparatus at this time is represented by “transmission pulse” and “reception pulse (1)” in FIG. Here, “transmission pulse” indicates intermittent ultrasonic waves emitted by “ultrasonic distance meter”, and “first return pulse” of “reception pulse (1)” indicates a reflected wave from the ceiling, Similarly, the “second return pulse” indicates a reflected wave from the “height meter (main body)”. The distance obtained at this stage is calculated by further halving the value obtained by dividing the time from issuing the “transmission pulse” until receiving the “second return pulse” by the speed of sound.
Next, after the examinee stands upright at a predetermined position on the height meter, the “ultrasonic distance meter” included in the “height meter (main body)” is activated again, Measure the distance to the top of the patient's head that is turned back. The movement of the apparatus at this time is represented by “transmission pulse” and “reception pulse (2)” in FIG. Here, “transmission pulse” indicates an intermittent ultrasonic wave emitted by the “ultrasonic distance meter”, and the “first return pulse” of the “reception pulse (2)” indicates a reflected wave from the ceiling. “Return pulse from the top of the medical examinee” indicates a reflected wave from the top of the medical examinee. The distance obtained at this stage is calculated by further halving the value obtained by dividing the time from issuing the “transmission pulse” until receiving the “return pulse from the top of the examinee's head” by the speed of sound.
Lastly, it is obtained by subtracting the "distance from the ultrasonic distance meter to the top of the medical examinee folded back from the ceiling surface" from the "distance from the ultrasonic distance meter to the height meter (main body)". The value is the height of the examinee.
In addition, when the measured value of “distance from the ultrasonic distance meter to the top of the medical examinee on the ceiling surface” is shorter than the distance to the ceiling surface, in other words, “from the ultrasonic distance meter to the ceiling surface. If it is less than half of the “distance to the folded height meter (main body)”, it means that the examinee is blocking the propagation path of the ultrasonic wave emitted by the ultrasonic distance meter, that is, the examinee is in the correct position. It can be detected that it is not upright. The movement of the device in this case is represented by “transmission pulse” and “reception pulse (3)” in FIG. Here, the “transmission pulse” is the same as described above, and the “incorrect return pulse from the medical examinee” in the “reception pulse (3)” indicates that the medical examinee has blocked the ultrasound propagation path. Shows the reflected wave.

FIG. 3 shows an embodiment in which the reflector of the present invention is used.
The present embodiment is an embodiment for causing the above-described “embodiment 1” to function well in a space without a ceiling or a space where reflection of ultrasonic waves is not sufficient.
Apart from the “height meter (main body)”, a “reflector” that reflects ultrasonic waves is installed by attaching a reflector on the ceiling. After that, in “Example 1” shown above, the ceiling may be read as “reflector”.

FIG. 4 shows an embodiment in which the corner reflector of the present invention is used, and FIG. 5 shows the operation contents.
When the corner reflector is used, the reflected wave from the corner reflector does not return to the “ultrasound transmission / reception unit” in an ideal state. Therefore, in FIG. 5, the “first return pulse” shown in FIG. 2 does not exist. Since the subsequent operation content can be considered in the same manner as in the “embodiment 2” described above, the ceiling in “embodiment 1” may be read as “corner reflector”.

The present invention contributes to the industry as a height measuring method using an ultrasonic distance meter and a method for manufacturing the device, which are miniaturized.

Claims (3)

In the height measurement method using ultrasonic distance measurement, or its device,
Has an ultrasonic rangefinder installed vertically upward,
Ultrasonic waves sent vertically upward from the ultrasonic rangefinder are reflected from the ceiling and directed vertically downward.
The ultrasound is further reflected at the top of the patient's head and directed vertically upward,
This further reflects off the ceiling and goes vertically downward,
This is measured by receiving the reflected wave, and the distance from the ultrasonic rangefinder to the top of the examinee by turning back on the ceiling,
When there is no medical examinee,
Ultrasonic waves sent vertically upward from the ultrasonic rangefinder are reflected from the ceiling and directed vertically downward.
The ultrasonic waves are further reflected on the surface of the height meter body and directed vertically upward,
This further reflects off the ceiling and goes vertically downward,
By measuring this as a reflected wave, by finding the difference between the ultrasonic distance meter and the distance to the height meter body surface from the ceiling,
A height measuring method and apparatus characterized by measuring the height of a medical examinee.
In order to reflect ultrasonic waves directly above the medical examinee, a reflector or a corner reflector is provided,
The height measuring method and apparatus according to claim 1, wherein the ceiling according to claim 1 is replaced with a reflector or a corner reflector.
When the distance measured by the ultrasonic distance meter is shorter than the distance to the ceiling according to claim 1, the reflector according to claim 2, or the corner reflector according to claim 2, the examinee can measure the height. 3. The height measuring method and apparatus according to claim 1 or 2, wherein it is detected that there is no posture.