Instrument for measuring height of human body

Abstract

The invention discloses a body height measuring apparatus for human body, including a measuring bar and a ground host computer, provided with a working control unit and an ultrasonic body height measuring unit, wherein the ultrasonic body height measuring unit includes an ultrasonic signal transmitting and receiving unit, a synchronized signal transmitting and receiving unit, an operation processing unit. The working control unit, the synchronized signal transmitting unit and the ultrasonic signal transmitting unit are arranged on the measuring bar, while the synchronized signal transmitting unit and the ultrasonic signal transmitting unit are connected with the working control unit, and the synchronized signal receiving unit, the ultrasonic signal receiving unit and the operation processing unit are installed on the ground host computer, wherein the synchronized signal and the ultrasonic signal are two signals having different transmission speed. Due to the measuring apparatus adopting the measuring bar and the ground host compute, the body height measuring value is computed by two signals transmitted from one side to the other side. The ultrasonic signal needs no reflection, reduces the measuring error and ensures the measuring accuracy.

Description

technical field [0001] The invention relates to a human body height measuring device, in particular to an ultrasonic height measuring device. Background technique [0002] The ultrasonic height measuring device has the characteristics of high measurement accuracy and convenient use. But the existing ultrasonic height measuring device adopts that an ultrasonic signal transmitting device and an ultrasonic signal receiving device are arranged on the measuring rod simultaneously, and its height value is calculated according to the round-trip time of the ultrasonic wave, and the shortcoming of its existence is that if the If the standing ground is not flat enough, the ultrasonic wave may have reflection deviation, and the measurement will not be accurate enough. [0003] In addition, how to ensure that the measuring rod is in a horizontal state when the ultrasonic signal is emitted, the existing ultrasonic height measuring device is provided with a square mechanism on the measur...

AI Technical Summary

Problems solved by technology

But the existing ultrasonic height measuring device adopts that an ultrasonic signal transmitting device and an ultrasonic signal receiving device are arranged on the measuring rod simultaneously, and its height value is calculated according to the round-trip time of the ultrasonic wave, and the shortcoming of its existence is that if the If the standing ground is not flat enough, the ultrasonic wave may have reflection deviation, and the measurement will not be accurate enough

[0003] In addition, how to ensure that the measuring rod is in a horizontal state when the ultrasonic signal is emitted, the existing ultrasonic height measuring device is provided with a square mechanism on the measuring rod, and the measurer is allowed to stand on the backrest during use, and the measuring rod is placed on the On the top of the head, when the measuring rod is at right angles to the backrest, the switch is pressed by hand, and the measurement unit emits an ultrasonic signal. When the measurement unit receives the signal, the birth height value can be calculated. However, due to the need to stand beside the backrest, Like this, its place of use is then limited, and, because the work of ultrasonic measuring device needs to be operated by manual, it is not convenient to use

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