CN205450641U

CN205450641U - Remote data collection system

Info

Publication number: CN205450641U
Application number: CN201520972064.8U
Authority: CN
Inventors: 郑杰波
Original assignee: Shenzhen Shihui Technology Co ltd
Current assignee: Shenzhen Shihui Technology Co ltd
Priority date: 2015-12-01
Filing date: 2015-12-01
Publication date: 2016-08-10
Anticipated expiration: 2025-12-01

Abstract

The utility model discloses a remote data collection system, including controller, ADC module, photoelectric isolation module, processing circuit, sensor RV, interface circuit, TTL level shifting circuit and PC terminal, ADC module, interface circuit and TTL level shifting circuit are connected respectively to the controller, and the ADC module still connects gradually photoelectric isolation module, processing circuit and sensor, interface circuit still connects the display module, TTL level shifting circuit still connects gradually serial server, and serial server passes through the internet net and connects the PC terminal. The utility model discloses a singlechip and serial server both can accomplish data acquisition, can send the data encapsulation to the internet net again, and circuit structure is simple, and the practicality is strong, were applicable to very much data terminal remote, remote place and gathered work.

Description

A kind of remote data acquisition system

Technical field

This utility model relates to a kind of acquisition system, specifically a kind of remote data acquisition system.

Background technology

Automatically control and be deep into all trades and professions, use the control mode of sensor, common concern by all trades and professions, wherein the quality of collecting part is directly connected to the quality of control system, and more existing collecting parts use integrated chip controls mostly, greatly improve cost and the volume of temperature control system, this is also to cause one of high reason of existing market industry automatic control equipment price, development along with industrial control network, the waveform of real-time data requiring on-site terminal equipment can become generally needing of industrial automation by the LAN even wide area network transmission existed, how to reduce cost and complete remote collection, it it is the interior emphasis paid close attention to of current industry.

Utility model content

The purpose of this utility model is to provide a kind of remote data acquisition system, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, the following technical scheme of this utility model offer:

A kind of remote data acquisition system, including controller, ADC, photoelectric isolation module, signal processing circuit, sensor RV, interface circuit, Transistor-Transistor Logic level change-over circuit and PC terminal, described controller connects ADC respectively, interface circuit and Transistor-Transistor Logic level change-over circuit, ADC is also sequentially connected with photoelectric isolation module, signal processing circuit and sensor, described interface circuit is also connected with display module, described Transistor-Transistor Logic level change-over circuit is also sequentially connected with serial server, serial server connects PC terminal by Internet: described controller uses AT89C51 system；

Described signal processing circuit includes sensor RV, resistance R1, resistance R2, audion Q1, audion Q2 and voltage comparator U1, described voltage comparator U1 pin 2 connecting triode Q2 emitter stage and resistance R5 respectively, audion Q2 colelctor electrode connects voltage comparator U1 pin 4 respectively, resistance R3, sensor RV and power supply VCC, voltage comparator U1 pin 3 connects power supply VCC, voltage comparator U1 pin 8 connects the resistance R5 other end respectively, audion Q1 emitter stage and resistance R1 ground connection, the resistance R1 other end connects resistance R2 and the sensor RV other end respectively, resistance R2 other end connecting triode Q1 base stage, voltage comparator U1 pin 1 connects photoelectric isolation module.

As further program of the utility model: described Transistor-Transistor Logic level change-over circuit uses MAX232.

As further program of the utility model: described serial server uses DNE-18.

As further program of the utility model: described ADC uses ADC0809.

As further program of the utility model: described interface circuit uses 8255A.

As this utility model further scheme: described photoelectric isolation module uses IS0100.

Compared with prior art, the beneficial effects of the utility model are: this utility model uses single-chip microcomputer and serial server, both can be with data acquisition, can encapsulate data again and send to Internet, circuit structure is simple, practical, it is highly suitable for remote, the data terminal collecting work of remote locations.

Accompanying drawing explanation

Fig. 1 is the system architecture diagram of remote data acquisition system；

Fig. 2 is the circuit diagram of signal processing circuit in remote data acquisition system.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

Refer to Fig. 1～2, in this utility model embodiment, a kind of remote data acquisition system, including controller, ADC, photoelectric isolation module, signal processing circuit, sensor RV, interface circuit, Transistor-Transistor Logic level change-over circuit and PC terminal, described controller connects ADC respectively, interface circuit and Transistor-Transistor Logic level change-over circuit, ADC is also sequentially connected with photoelectric isolation module, signal processing circuit and sensor, described interface circuit is also connected with display module, described Transistor-Transistor Logic level change-over circuit is also sequentially connected with serial server, serial server connects PC terminal by Internet；Described controller uses AT89C51 system.

Described signal processing circuit includes sensor RV, resistance R1, resistance R2, audion Q1, audion Q2 and voltage comparator U1, described voltage comparator U1 pin 2 connecting triode Q2 emitter stage and resistance R5 respectively, audion Q2 colelctor electrode connects voltage comparator U1 pin 4 respectively, resistance R3, sensor RV and power supply VCC, voltage comparator U1 pin 3 connects power supply VCC, voltage comparator U1 pin 8 connects the resistance R5 other end respectively, audion Q1 emitter stage and resistance R1 ground connection, the resistance R1 other end connects resistance R2 and the sensor RV other end respectively, resistance R2 other end connecting triode Q1 base stage, voltage comparator U1 pin 1 connects photoelectric isolation module；Described Transistor-Transistor Logic level change-over circuit uses MAX232；Described serial server uses DNE-18；Described ADC uses ADC0809；Described interface circuit uses 8255A；Described photoelectric isolation module uses IS0100.

Operation principle of the present utility model is: refer to Fig. 1, the signal obtaining sensor RV processes, i.e. signal amplify, filter, the processing procedure such as quantization, need to consider the interference suppression of signal, conversion accuracy and the factors such as linear in the process, in order to analog input channel is eliminated interference, adding photoelectric isolation module, AT89C51 system controls ADC0809 and carries out data acquisition, is divided into two-way to process the signal collected.Display module of leading up to shows: i.e. after A/D changes, and preserves the data after the port number of A/D conversion, and A/D conversion in single-chip microcomputer internal memory, after a road conversion, after analog-digital conversion data read by single-chip microcomputer, read channel way from 8255A, complete the display process of passage way.In like manner, after display channel way, then showing that A/D changes data, another road MAX232 realizes the conversion between TTL and RS232 level, gives serial server DNE-18 by the data of conversion.Serial server is exactly that the packet that single-chip microcomputer is issued is converted to Ethernet data message format, is then forwarded in Internet, it is achieved data transfers on network.

In Fig. 2, when sensor RV temperature raises, audion Q1 turns on, and audion Q2 ends, voltage comparator U1 pin 1 output low level；When sensor RV temperature reduces, audion Q1 ends, audion Q2 turns on, voltage comparator U1 pin 1 exports high level, voltage comparator is wherein make use of well the signal of telecommunication to be processed, being low level by the voltage process less than 3V, the voltage process higher than 3V is high level, delivers to photoelectric isolation module.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.

In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.

Claims

1. a remote data acquisition system, including controller, ADC, photoelectric isolation module, signal processing circuit, sensor RV, interface circuit, Transistor-Transistor Logic level change-over circuit and PC terminal, it is characterized in that, described controller connects ADC, interface circuit and Transistor-Transistor Logic level change-over circuit respectively, ADC is also sequentially connected with photoelectric isolation module, signal processing circuit and sensor, described interface circuit is also connected with display module, described Transistor-Transistor Logic level change-over circuit is also sequentially connected with serial server, and serial server connects PC terminal by Internet；Described controller uses AT89C51 system；

Remote data acquisition system the most according to claim 1, it is characterised in that described Transistor-Transistor Logic level change-over circuit uses MAX232.

Remote data acquisition system the most according to claim 1, it is characterised in that described serial server uses DNE-18.

Remote data acquisition system the most according to claim 1, it is characterised in that described ADC uses ADC0809.

Remote data acquisition system the most according to claim 1, it is characterised in that described interface circuit uses 8255A.

Remote data acquisition system the most according to claim 1, it is characterised in that described photoelectric isolation module uses IS0100.