Cap type ultrasonic height measuring instrument

Abstract

The invention discloses a cap type ultrasonic height measuring instrument which comprises a cap, an acceleration sensor, a Blue tooth device, a voice broadcast device, an ultrasonic range sensor, a display screen, a vibration motor, a power supply, a microswitch and a mini-processor. Compared with the prior art, the cap type ultrasonic height measuring instrument has the advantages of being small and exquisite in size, high in practicality, convenient to carry, simple and reliable in structure and low in cost. The cap type ultrasonic height measuring instrument is used for measuring the heights of users of all ages including young age children and is particularly suitable for being used by ordinary families.

Description

technical field [0001] The invention belongs to a distance measuring instrument, in particular to a portable measuring tool for measuring human body height. Background technique [0002] The ultrasonic height measuring device has the characteristics of high measurement accuracy and convenient use, and can be widely used. At present, the ultrasonic height meters on the market are basically designed as electronic display scales, which are high in cost, complex in structure, large and heavy, and take up a lot of space. . [0003] For example, the Chinese patent document whose patent number is 88211682 and application number is 88105505 discloses a non-contact measuring device for human body height, including a main shock unit, a transmitting unit, a receiving unit, a distance-gain automatic control unit, and an initial monostable oscillation Devices, working memory units, reference monostable oscillators, height comparators, clock pulse generators, counters, registers, decode...

AI Technical Summary

Problems solved by technology

However, this device is similar to the above device, and is also designed as a bench-type ultrasonic height measuring instrument for weighing scales. When measuring height, first adjust the ultrasonic transmitting part and receiving part, start the measurement, and then compare the reflection time of the whole body and the reflection time from the top of the human head. Calculate the human body height reading, the device is bulky, takes up a lot of space, the cost is high, it is not suitable for home use; it is inconvenient to carry, obviously cannot keep up with the needs of the modern market

Existing ultrasonic height meters and similar products have complex circuit structures, large overall volume, bulky devices, and poor practicability, which cannot well meet the high requirements of modern people for portability and simplicity, and the cost is relatively high. Instruments similar to measuring instruments have always been unable to meet the needs of daily life, and have not entered thousands of households

[0005] In addition, due to the special circumstances of young children, they cannot cooperate with others to measure well, so it is very difficult to measure the height of young children, and the current measurement methods cannot solve this problem well

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