RU2033U1 - ELECTRONIC BALANCE - Google Patents

Abstract

ELECTRONIC SCALES, containing a mechanical voltage sensor, electrically connected to the input of an electronic millivoltmeter, the output of which is connected to the input of a calculator, a power source, characterized in that they contain a load suspension, mechanically connected to a mechanical voltage sensor and a handle, and an electronic millivoltmeter, calculator and power source located in the handle.

Description

The proposed utility model relates to devices that can measure the weight of suspended loads. The measurement is carried out by converting mechanical stress or deformation of an elastic element into an electrical signal. The primary area of use is the measurement of weight in trade and everyday life.

Known devices for measuring weight in everyday life, based on measuring the deformation of an elastic element made in the form of a spring. Such spring scales can be made in the form of a load suspension connected to a spring, which in turn is connected to a handle. This advantage is crossed out by the low accuracy of the balance and the accumulating initial deformation of the spring. Electronic scales are also known that contain a mechanical stress sensor electrically connected to the input of an electronic millivoltmeter, the output of which is connected to the input of the calculator and the power source. The power source in such a balance network. The load, the weight of which is measured, is located on a platform connected to a piezoelectric sensor. (See E.S. Levshchina P.V. Novitsky Electrical Measurements of Physical Quantities.-L.: Energoatomizdat, 1983.) Such a design of the scales makes it impossible to use them in street torus, y 54 /; Z

talking and carrying them with you. At the same time, the rapid development of street and market trading in Russia requires the seller and buyer to have an easy and accurate tool for determining weight.

The proposed technical solution fulfills the task of providing the user with an easy and accurate tool for determining weight. The solution to this problem is based on the use of modern electronic element base and is achieved by the relative position of the elements, the relationship between them and their constructive implementation. An electronic millivoltmeter, calculator and power supply are located in the handle. The load suspension is mechanically connected to a strain gauge and

handle. The signs of the claimed object, matching the prototype, are the presence of a mechanical stress sensor, electronic millivoltmeter, calculator and power source, electrical connection

THEIR among themselves. Distinctive features are the presence of the load suspension, its mechanical connection with the mechanical stress sensor and the handle, the location of the electronic millivoltmeter, calculator and power source in the handle.

Figure 1 shows a prototype of the claimed utility model. The mechanical stress sensor 1 is connected to the platform 2. The weighing result and price are displayed on the display 3. The power cord 4 provides power. Figure 2 shows the claimed utility model. The handle 1 shows the display 2 and the keys 3 of the calculator. The mechanical stress sensor 4 is connected to the load suspension 5 and the handle.

The use of a piezoelectric sensor is feasible as a mechanical stress sensor. To amplify the signal from the sensor, it is convenient to use the KR 572 PV 5A microcircuit - a digital voltmeter with a high-resistance input and output to a liquid crystal indicator. The microcircuit requires power from a 9V element. It is convenient to use the liquid crystal indicator Ж КЦ5-4 / 8 as an indicator of a microcalculator. The general dimensions of the liquid crystal indicator and the battery allow them to be placed in a small handle. This design allows you to get an easy and accurate tool for determining weight.

f AUTHOR /.- UV. AGAFONOV U

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On Fig.3 presents a structural diagram of the inventive object. The mechanical stress sensor 1 is electrically connected to the input of the electronic millivoltmeter 2, the output of which is connected to the input of the calculator 3. Power supply 4 feeds the millivoltmeter and calculator circuits. The suspension of the load 5 is mechanically connected to the mechanical stress sensor and the handle 6. The millivoltmeter, calculator and power source are located in the handle.

Claims (1)

ELECTRONIC SCALES, containing a mechanical voltage sensor, electrically connected to the input of an electronic millivoltmeter, the output of which is connected to the input of a calculator, a power source, characterized in that they contain a load suspension, mechanically connected to a mechanical voltage sensor and a handle, and an electronic millivoltmeter, calculator and power source located in the handle.