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Digital indicating scale with anti-cheating function

An anti-cheating, digital technology, applied to special scales, measuring devices, instruments, etc., can solve the problems of inability to weigh times, weight, unit price, amount, time recording, storage, etc.

Inactive Publication Date: 2015-11-25
HUAIAN INST OF MEASUREMENT & TESTING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to provide a digital indicator scale with anti-cheating function, which collects and analyzes the signal of the load cell, and solves the problem that the traditional digital indicator scale cannot check cheating information such as the number of cheating weighing times, weight, unit price, amount, and time. The problem of recording and saving makes the digital indicating scale have the function of preventing technical cheating; in addition, the real-time information of the digital indicating scale is transmitted wirelessly, which solves the problem that the traditional digital indicating scale cannot exchange data with the outside world, and realizes remote and digital management. Function

Method used

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  • Digital indicating scale with anti-cheating function

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with accompanying drawing.

[0053] Such as figure 1 As shown, the virtual frame is a working principle block diagram of the circuit module of the digital indicator scale with anti-cheating function of the present invention.

[0054] (A1) is a signal filter amplifier circuit, the amplification factor is 128dB, the load cell is externally connected, the voltage signal of the load cell is input, and the amplified signal is output to the (A / D) digital-to-analog conversion circuit;

[0055] (A / D) is a digital-to-analog conversion circuit that converts analog signals into digital signals and sends them to (CPU1, CPU2) single-chip microcomputers for processing and analysis;

[0056] (CPU1) is a single-chip microcomputer circuit, externally connected to a 5*5 keyboard, buzzer and display, to receive keyboard input commands such as unit price, reset, tare, and return, and to output unit price, weight, unit, a...

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Abstract

The invention discloses a digital indicating scale with anti-cheating function. The digital indicating scale is composed of a circuit module externally connected with a weighing sensor, a 5*5 keyboard, a display, a buzzer, and a 5.5V~9.6V DC power supply; the invention is symmetrical Collect the voltage signal of the heavy sensor and the display data signal of the weighing weight, compare it with the data standard in the memory, record and save the cheating information of the weight, unit price, amount, time and the ID number of the digital indicating scale, and wirelessly monitor the cheating information transmission, realize remote and digital management, and improve the management level of digital indicator scales.

Description

technical field [0001] The invention relates to a digital indicating scale, in particular to a method for amplifying a signal generated by a load cell, A / D conversion, a keyboard interface, a data output interface, monitoring a weighing signal, analyzing and recording cheating weighing information, and being able to Digital indicating scale with wireless data transmission. Background technique [0002] At present, digital indicator scales have become one of the most common trade settlement measuring instruments. The accuracy of digital indicator scales on the market is closely related to the daily life of ordinary people. However, many unscrupulous traders always violate the principle of honest management and use traditional digital The indicator scale does not have the defect of anti-cheating function, and various cheating methods are used to seek improper benefits. The common cheating methods of digital indicating scales mainly include: [0003] 1. Covering display subti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/415
Inventor 孙业梅成建生关士岩刘家骏于建明王继凤
Owner HUAIAN INST OF MEASUREMENT & TESTING
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