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ProductsHenan Shengyuan Industrial Co., Ltd. is a high-tech enterprise integrating technology research and development, processing and manufacturing, sales and service. The company mainly researches and produces multifunctional ultrasonic height and weight measuring instruments.
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ProfileHenan Shengyuan Industrial Co., Ltd. is a high-tech enterprise integrating technology research and development, processing and manufacturing, sales and service. The company mainly researches and produces multifunctional ultrasonic height and weight measuring instruments.
How accurate is an ultrasonic height and weight measurement device?
Release Time:
2020-09-16
Ultrasonic height and weight measuring instrument - is the combined height and weight machine accurate? Shengyuan Industry tells you!
Although the standard of living has improved nowadays, diseases remain a persistent shadow over people's lives. Illness can strike suddenly, and many serious illnesses show no obvious signs before onset. A key indicator of health is changes in weight. You may not notice weight changes over a short period, but an ultrasonic height and weight measuring instrument can help you determine this.
So, is the ultrasonic height and weight measuring instrument, the combined height machine, accurate? This is a question many users or those who have seen this type of intelligent ultrasonic height and weight measuring instrument want to ask.
Is the ultrasonic height and weight measuring instrument accurate? The answer is a definite yes! All instruments have a margin of error. The general error range for an ultrasonic height and weight measuring instrument is 0.5cm and 0.1kg. If you can accept this error range, then it is accurate. If you cannot accept it, then you won't find a more accurate one, because even manual measurement has errors; errors from eyesight and manual operation will occur.
Why is the ultrasonic height and weight measuring instrument said to be accurate? Once you understand the working principle of the ultrasonic height and weight measuring instrument, you will understand its accuracy.
The principle of the ultrasonic height and weight combined machine:
The ultrasonic principle of the height scale uses microcomputer control and advanced ultrasonic measurement technology to automatically measure height and weight. The measurement results are displayed digitally and announced verbally. This machine is an ideal choice for hospitals, schools, physical examination centers, and gyms.
The ultrasonic measuring instrument uses ultrasonic waves as the detection method; it must generate and receive ultrasonic waves. The sensor determines the height of the human body through the wavelength of the sound wave and the time difference between emitting and receiving the sound wave. Simultaneously with sending the pulse, the receiver's timer starts and times until the receiving sensor receives the reflected wave, at which point the counting stops. This time difference is equivalent to the measured distance, from which the distance between the measuring instrument and the top of the head, i.e., the height of the person, can be calculated.
Design concept:
The ultrasonic measuring instrument has two sub-modules: distance measurement and data display. The data display module consists of three parts: counting, display, and signal processing.
The measurement is mainly completed by the ultrasonic sensor. The time difference between transmission and reception is converted into an electrical signal, then converted to a digital signal by A/D conversion, and then the digital signal is sent to the calculation part and then to the display.
System composition:
The ultrasonic height measuring instrument consists of a single-chip microcomputer central control system, an ultrasonic transmitting circuit, and an ultrasonic receiving circuit. The ultrasonic transmitting circuit consists of a transmitting drive circuit and an ultrasonic transducer located at the output end of the drive circuit. The ultrasonic receiving circuit consists of an ultrasonic receiving transducer, a limit circuit, and an ultrasonic receiving integrated circuit.
The ultrasonic sensor is a sensor developed using the characteristics of ultrasonic waves. Using ultrasonic waves as the detection method, it is necessary to generate and receive ultrasonic waves. The device that performs this function is the ultrasonic sensor. The ultrasonic sensor is mainly composed of piezoelectric chips and can both transmit and receive ultrasonic waves.
Before leaving the factory, all ultrasonic height and weight combined machines are repeatedly calibrated multiple times by professional quality inspectors using a standard rod and weights. So, is this ultrasonic height and weight measuring instrument accurate? The answer is yes.
As for some people saying that the ultrasonic height and weight measuring instrument is inaccurate, there are reasons: for example, if you don't use a standard rod as the standard for measuring height but use a personal standard, there are many uncertainties. For example, you are wearing shoes with high heels, have a high bun, or are not standing with your chest up and head held high; these will affect your height. Therefore, to see if it is accurate, you must use a standard rod to test it. For weight, there are also many influencing factors, such as whether you have drunk water, how much you have eaten, or whether you have been to the toilet, etc. Therefore, to test the accuracy, standard weights are required. However, many people are unwilling to believe the factual evidence and will think it is inaccurate based on their own ideas. In fact, this type of instrument is a device that has undergone extensive research and development and multiple tests and calibrations before being established. For example, Shengyuan manufacturer has been dedicated to researching ultrasonic height and weight measuring instruments for 28 years. When asked if the ultrasonic height and weight measuring instrument is accurate, Shengyuan's answer is reliable and credible.
In this intelligent age, intelligent ultrasonic height and weight measuring instruments will have errors after prolonged use. Calibrating them with standard weights and a standard rod will make them accurate height and weight measuring instruments again.
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Henan Shengyuan Industrial Co., Ltd.
Address: No. 12, Dingxiangli, Zhengzhou High-tech Industrial Development Zone