CN201569699U

CN201569699U - Voltage collector

Info

Publication number: CN201569699U
Application number: CN2009202144825U
Authority: CN
Inventors: 丁红
Original assignee: Shanghai Polytechnic University
Current assignee: Shanghai Polytechnic University
Priority date: 2009-11-30
Filing date: 2009-11-30
Publication date: 2010-09-01
Anticipated expiration: 2019-11-30

Abstract

The utility model relates to a voltage collector which is characterized by comprising a single-chip microcomputer circuit, and an analog-to-digital converting circuit, a display control circuit, a power-on reset circuit and a serial communication circuit which are respectively connected with the single-chip microcomputer circuit; and the input end of the analog-to-digital converting circuit is connected with analog signals. The voltage collector adopts the single-chip microcomputer circuit as the hardware equipment of a control system, has low cost and miniature structure, can view the sinusoidal voltage waveform and voltage value of the circuit through the connection between the serial communication circuit and a microcomputer as well as the display of a nixietube, so as to fully view the voltage information.

Description

A kind of voltage acquisition device

Technical field

The utility model relates to a kind of SCM Based electric quantity collector, is specifically related to a kind of voltage acquisition device.

Background technology

At present, traditional voltage table, its shortcoming is that cost height, reaction are slow, measuring error is big, volume is heavy.Existing digital voltmeter has had optimization to a certain extent, and its shortcoming is that serviceable life is short, and because it adopts semiconductor technology, therefore the magnitude of voltage to input has requirement, and the working voltage value that surpasses its regulation will cause damage to conversion chip.Existing voltage acquisition device can only use under common voltage environment, can't satisfy the application requirements of test voltage under the particular surroundings.

The utility model content

The utility model provides a kind of voltage acquisition device, and is low-cost, structure is small and exquisite, high-acruracy survey voltage rapidly, long service life.

For achieving the above object, the utility model provides a kind of voltage acquisition device, be characterized in, comprise single chip circuit, and the analog to digital conversion circuit that is connected with single chip circuit respectively, display control circuit, electrify restoration circuit and serial communication circuit, the input end of described analog to digital conversion circuit is connected with simulating signal.

Above-mentioned voltage acquisition device also comprises power circuit, and this power circuit is connected with the power input of single chip circuit, analog to digital conversion circuit, display module, electrify restoration circuit and serial communication circuit respectively.

The output terminal of above-mentioned serial communication circuit is connected with microcomputer.

The utility model is compared with the voltage table of prior art, has the following advantages:

The utility model adopts the hardware device of single chip circuit as control system, and is with low cost, structure is small and exquisite;

The utility model is connected with microcomputer by serial communication circuit, checks the sinusoidal voltage waveform of circuit, can specifically check information of voltage all sidedly.

Description of drawings

Fig. 1 is the general structure synoptic diagram of a kind of voltage acquisition device of the utility model;

Fig. 2 is the circuit theory diagrams of the electrify restoration circuit of a kind of voltage acquisition device of the utility model;

Fig. 3 is the circuit theory diagrams of the power circuit of a kind of voltage acquisition device of the utility model.

Embodiment

Further specify embodiment of the present utility model below in conjunction with accompanying drawing.

See also shown in Figure 1, a kind of voltage acquisition device of the utility model comprises single chip circuit 1, and the analog to digital conversion circuit 2 that is connected with single chip circuit 1 respectively, display control circuit 3, electrify restoration circuit 4 and serial communication circuit 5, the input end of described analog to digital conversion circuit 2 is connected with simulating signal 6.

Single chip circuit 1 adopts the AT89S51 singlechip chip in the utility model, this singlechip chip comprises 8 central processing units, 40 pins, 4k Bytes Flash sheet internal program storer, the Random Access Data storer (RAM) of 128bytes, 32 two-way I/O in outside (I/O) mouth, 2 layers of interrupt nesting interruption of five interrupt priority levels, two 16 programmable Timer counters, two full duplex serial communication ports, WDT circuit and on-chip clock oscillator.

Analog to digital conversion circuit 2 adopts chip ADC0809, and chip ADC0809 is eight successive approximations, the integrated A/D converter of single chip CMOS.This chip comprises 8 road analog multichannel switches of latch function, can be to 8 tunnel input simulating signal timesharing conversions, address decoding and latch cicuit with multi-way switch, 8 A/D converters and ternary output latch, its input end connection mode analog signal 6, voltage analog input analog to digital conversion circuit 2, after converting digital signal to, input single chip circuit 1 carries out signal Processing, signal after the single chip circuit control and treatment is by display control circuit 3 and serial communication circuit 5 outputs, display control circuit 3, adopt 7SEG anode LED charactron altogether, this LED charactron shows that this voltage acquisition device detects the gained magnitude of voltage; Serial communication circuit 5 adopts chip MAX232AESE and serial ports Dconnector9, this collector is connected with microcomputer by this serial communication circuit 5, by the software of on microcomputer, having programmed, the sinusoidal wave diagrammatic sketch that shows measured voltage, its ultimate resolution of measured voltage is 0.03V, and the error of absolute method of measurement is about ± 0.04V.

Be illustrated in figure 2 as electrify restoration circuit 4, " RESET " switch and capacitor C 1, C2 are in parallel, and one end connect power supply, the other end of its other end intercept point resistance R1, resistance R 1 connects switch S 1 and S2, switch S 1 and switch S 2 parallel connections, and the other end of switch S 1 and S2 is connected with P31 with the pin P30 of singlechip chip respectively.When the each new primary side amount of beginning, by " RESET " key, the information in this voltage acquisition device is emptied and resets, be that this detects gained data to guarantee measured voltage signal.

Power circuit as shown in Figure 3, resistance R 6 and a LED are connected in series, itself and two capacitor C 5 and C6 are connected in parallel, one section meets power supply VCC, other end ground connection, this power circuit is connected with single chip circuit 1, analog to digital conversion circuit 2, display module 3, electrify restoration circuit 4 and the power input of serial communication circuit 5 respectively, each parts to this voltage acquisition device provide stabilized power source, LED wherein shows whether operate as normal of this power circuit, to guarantee the operate as normal of voltage acquisition device total system.

Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection domain of the present utility model should be limited to the appended claims.

Claims

1. voltage acquisition device, it is characterized in that, comprise single chip circuit (1), and the analog to digital conversion circuit (2) that is connected with single chip circuit (1) respectively, display control circuit (3), electrify restoration circuit (4) and serial communication circuit (5), the input end of described analog to digital conversion circuit (2) is connected with simulating signal (6).

2. voltage acquisition device as claimed in claim 1, it is characterized in that, described voltage acquisition device also comprises power circuit, and described power circuit is connected with single chip circuit (1), analog to digital conversion circuit (2), display module (3), electrify restoration circuit (4) and the power input of serial communication circuit (5) respectively.

3. voltage acquisition device as claimed in claim 1 is characterized in that, the output terminal of described serial communication circuit (5) is connected with microcomputer.