CN101135896A

CN101135896A - On-off value data acquisition module

Info

Publication number: CN101135896A
Application number: CNA2006100532085A
Authority: CN
Inventors: 李江; 戴黎锋; 潘刚
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2006-08-30
Filing date: 2006-08-30
Publication date: 2008-03-05

Abstract

The invention comprises: a signal inputting circuit; a single board, a peripheral circuit, and a communication circuit. The signal inputting circuit and the communication circuit are respectively connected to the peripheral circuit. It uses a single board to collect the input signals of multi-path switching quantity or to collect the multi-path pulse signals and count them; the collected information is saved in an E2PROM chip; all inputted signals and communication network are isolated by using photoelectric approach; said module sends the data to the data management module through 485 network; multi switching quantity collecting modules are combined together to collect the switching quantity information of each device distributed in industry field.

Description

On-off value data acquisition module

Technical field

The present invention relates to data acquisition module, especially a kind of on-off value data acquisition module.

Background technology

Industry spot has a large amount of switching value signal demand collections, and it is too high that the employing Programmable Logic Controller carries out acquisition cost, if there is a kind of data acquisition module with low cost, and by 485 bus transfer datas, can satisfy low-cost demand of gathering the switching value signal.

Summary of the invention

The purpose of this invention is to provide a kind of on-off value data acquisition module, this module adopts single-chip microcomputer to receive multi-way switch amount signal, and by 485 networks information is sent to administration module.

The technical solution used in the present invention is as follows: comprise signal input circuit, single-chip microcomputer and peripheral circuit, communicating circuit.Wherein signal input circuit, communicating circuit link to each other with single-chip microcomputer and peripheral circuit respectively.

The useful effect that the present invention has is:

It adopts single-chip microcomputer to gather multi-way switch amount input signal, also can gather multiplex pulse signal and counting, and the data that collect can be stored in the E2PROM chip.All input signals and communication network adopt photoelectricity to isolate, and the data that module collects send to administration module by 485 networks.A plurality of on-off value data acquisition modules are combined, can be gathered the switching value information that is distributed in the industry spot various device.The address of 485 networks adopts the toggle switch setting.Module has memory function, still can keep the information of original setting and record after the power down.

Description of drawings

Fig. 1 is a structural principle block diagram of the present invention;

Fig. 2 is the signal input circuit schematic diagram;

Fig. 3 is single-chip microcomputer and peripheral circuit schematic diagram;

Fig. 4 is the communicating circuit schematic diagram.

Embodiment

As shown in Figure 1, the present invention it comprise signal input circuit 1, single-chip microcomputer and peripheral circuit 2, communicating circuit 3.Wherein signal input circuit 1, communicating circuit 3 link to each other with single-chip microcomputer and peripheral circuit 2 respectively.

As shown in Figure 2, signal input circuit 1: comprise eight TLP521 opto-coupler chip X1, X2, X3, X7, X8, X9, X10, X15, an exclusion RP1, eight diode D1, D2, D3, D7, D8, D9, D10, D15, eight resistance R 1, R2, R3, R7, R8, R9, R13, R14, a connection terminal J2; The the 2nd to the 9th pin of exclusion RP1 links to each other with the end pin of the same name of single-chip microcomputer U1 in single-chip microcomputer and the peripheral circuit 2 respectively; Connection terminal J2 is used to connect external input signal.This circuit is used to receive the switching value signal of outside input, is transferred to single-chip microcomputer and peripheral circuit 2 after the isolation.

As shown in Figure 3, single-chip microcomputer and peripheral circuit 2: comprise 8032 single-chip microcomputer U1, EEPROM and reset chip CSI1161 U2, crystal oscillator XT1, toggle switch S1, two capacitor C 1, C2, two resistance R 17, R18; The 10 pin RXD of single-chip microcomputer U1,11 pin TXD, 17 pin TXD_E link to each other with end pin of the same name in the communicating circuit 3 respectively, and 1～8 pin of single-chip microcomputer U1 is that p10～p17 links to each other with end pin of the same name in the signal input circuit 1 respectively.Single-chip microcomputer and peripheral circuit 2 are cores of whole data collection module, and it receives external switch amount input signal and is stored on the eeprom chip, and the data of the input signal that will put in order are exported to communicating circuit 3 simultaneously.

As shown in Figure 4, communicating circuit 3: comprise three opto-coupler chip 521 X17,6N137 U6, U7,485 transceiving chip 3082E U5, eight resistance R 22, R23, R24, R25, R27, R28, R29, R30; End pin RXD, TXD, TXD_E link to each other with the end pin of the same name of single-chip microcomputer U1 in single-chip microcomputer and the peripheral circuit 2 respectively.Terminal 485BUS_A, 485BUS_B are used for on-off value data acquisition module is articulated to 485 buses.

During use, external switch amount signal is received on the connection terminal J2, for on-off value data acquisition module provides two-way direct current 5V power supply and module is received on 485 networks, on-off value data acquisition module just can constantly be gathered external switch amount signal, when storing the E2PROM chip into data is sent on 485 networks.

Claims

1. on-off value data acquisition module is characterized in that: comprise signal input circuit (1), single-chip microcomputer and peripheral circuit (2), communicating circuit (3); Wherein signal input circuit (1), communicating circuit (3) link to each other with single-chip microcomputer and peripheral circuit (2) respectively.

2. on-off value data acquisition module according to claim 1 is characterized in that:

1) signal input circuit (1): comprise eight TLP521 opto-coupler chips (X1, X2, X3, X7, X8, X9, X10, X15), an exclusion (RP1), eight diodes (D1, D2, D3, D7, D8, D9, D10, D15), eight resistance (R1, R2, R3, R7, R8, R9, R13, R14), a connection terminal (J2); The the 2nd to the 9th pin of exclusion (RP1) links to each other with the end pin of the same name of single-chip microcomputer (U1) in single-chip microcomputer and the peripheral circuit (2) respectively; Connection terminal (J2) is used to connect external input signal;

2) single-chip microcomputer and peripheral circuit (2): comprise 8032 single-chip microcomputers (U1), EEPROM and the chip CSI1161 (U2) that resets, crystal oscillator (XT1), toggle switch (S1), two electric capacity (C1, C2), two resistance (R17, R18); 10 pin RXD of single-chip microcomputer (U1), 11 pin TXD, 17 pin TXD_E link to each other with end pin of the same name in the communicating circuit (3) respectively, and 1～8 pin of single-chip microcomputer (U1) is that p10～p17 links to each other with end pin of the same name in the signal input circuit (1) respectively;

3) communicating circuit (3): comprise three opto-coupler chips 521 (X17), 6N137 (U6, U7), 485 transceiving chip 3082E (U5), eight resistance (R22, R23, R24, R25, R27, R28, R29, R30); End pin RXD, TXD, TXD_E link to each other with the end pin of the same name of single-chip microcomputer (U1) in single-chip microcomputer and the peripheral circuit (2) respectively.