CN201583589U

CN201583589U - Digital voltmeter

Info

Publication number: CN201583589U
Application number: CN2009203170475U
Authority: CN
Inventors: 赵丹
Original assignee: Xian University of Technology
Current assignee: Xian University of Technology
Priority date: 2009-12-10
Filing date: 2009-12-10
Publication date: 2010-09-15
Anticipated expiration: 2019-12-10

Abstract

The utility model discloses a digital voltmeter comprising a singlechip and an A/D sampling circuit, a liquid crystal display module, a reset circuit module, a clock circuit module and an A/D converter which are connected with the singlechip respectively. For the digital voltmeter, the A/D sampling circuit is adopted to collect the voltage in a circuit and sends voltage signals to the singlechip; and the A/D converter is adopted to convert the voltage signals into digital signals which are displayed through the liquid crystal display module. The digital voltmeter can reset the circuit through a reset circuit module, and conduct reclocking through a clock circuit module. In both the function and the practical application, the digital voltmeter has the incomparable characteristics compared with the traditional digital voltmeter, can measure the voltage through long-range control, and has simple structure, convenient operation and small error.

Description

A kind of digital voltmeter

Technical field

The utility model belongs to the single-chip microcomputer applied technical field, relates to a kind of digital voltmeter.

Background technology

Traditional digital voltmeter is adapted at the scene and does hand dipping, finish remote measurement and will be further analyzed processing to measurement data, and the conventional digital voltage table can't be finished.

Summary of the invention

The purpose of this utility model provides a kind of digital voltmeter, can measure magnitude of voltage by remote collection, and simple in structure

The technical scheme that the utility model adopted is, a kind of digital voltmeter comprises single-chip microcomputer, and A/D Acquisition Circuit, LCD MODULE, reset circuit module, clock circuit module, A/D converter are connected with described single-chip microcomputer respectively.

Feature of the present utility model also is,

Single-chip microcomputer adopts the Atmega16 single-chip microcomputer.

LCD MODULE adopts 1602 LCD MODULE.

A kind of digital voltmeter of the present utility model by voltage in the A/D Acquisition Circuit Acquisition Circuit, sends voltage signal to single-chip microcomputer, by A/D converter voltage signal is transformed into digital signal, shows by LCD MODULE then.Can reset to circuit by the reset circuit module, carry out reclocking by the clock circuit module.No matter in function and practical application, all have the incomparable characteristics of conventional digital voltage table, can carry out the measurement of voltage by Long-distance Control, and simple in structure, easy to operate, error is little.

Description of drawings

Fig. 1 is the electrical block diagram of the utility model digital voltmeter.

Wherein, 1. single-chip microcomputer, 2.A/D Acquisition Circuit, 3. LCD MODULE, 4. reset circuit module, 5. clock circuit module, 6.A/D converter.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

The circuit structure of a kind of digital voltmeter of the utility model as shown in Figure 1, comprises single-chip microcomputer 1, and A/D Acquisition Circuit 2, LCD MODULE 3, reset circuit module 4, clock circuit module 5, A/D converter 6 are connected with single-chip microcomputer 1 respectively.

Wherein single-chip microcomputer 1 adopts the Atmega16 single-chip microcomputer, and LCD MODULE 3 adopts 1602 LCD MODULE.The ATmega16AVR kernel has abundant instruction set and 32 general purpose working registers.All registers are all directly patrolled unit (ALU) with calculation and are connected, and make an instruction can visit two independently registers simultaneously in a clock period.This structure has improved code efficiency greatly, and has and be up to 10 times data throughput than common CISC microcontroller.

The course of work of the present utility model is, by voltage in A/D Acquisition Circuit 2 Acquisition Circuit, sends voltage signal to single-chip microcomputer 1, by A/D converter 6 voltage signal is transformed into digital signal, shows by LCD MODULE 3 then.Can reset by 4 pairs of circuit of reset circuit module, carry out reclocking by clock circuit module 5.

No matter digital voltmeter of the present utility model in function and practical application, can carry out the measurement of voltage by Long-distance Control.And simple in structure, easy to operate, error is little.

Claims

1. a digital voltmeter is characterized in that, comprises single-chip microcomputer (1), and A/D Acquisition Circuit (2), LCD MODULE (3), reset circuit module (4), clock circuit module (5), A/D converter (6) are connected with described single-chip microcomputer (1) respectively.

2. digital voltmeter according to claim 1 is characterized in that, described single-chip microcomputer (1) adopts the Atmega16 single-chip microcomputer.

3. digital voltmeter according to claim 1 is characterized in that, described LCD MODULE (3) adopts 1602 LCD MODULE.