CN105678996A

CN105678996A - Field data collector

Info

Publication number: CN105678996A
Application number: CN201610176925.0A
Authority: CN
Inventors: 杨荣金; 李秀红; 黄天戍
Original assignee: Anhui Js Information Technology Co Ltd
Current assignee: Anhui Js Information Technology Co Ltd
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2016-06-15

Abstract

The invention relates to the technical field of remote monitoring, in particular to a field data collector which comprises a microprocessor, a GPRS (general packet radio service) module, a memory module, a resetting module, a clock module, a serial interface module, an analog/digital conversion module, a sensor and a power source module. The memory module comprises a flash memory and a random memory, the power source module provides corresponding working voltage for a a whole system, the GPRS module, the memory module, the resetting module, the clock module and the serial interface module are all directly connected with the microprocessor, and the sensor is connected with the microprocessor through the analog/digital conversion module. The data collector is combined with GPRS wireless transmission technology, a virtual special data network is formed with the help of a wireless communication network of a mobile communication operator to transmit sampling data, and the whole system has the advantages of wide network coverage, reliable transmission, high capacity expanding performance, flexibility in networking and low operation cost.

Description

Field data collection device

Technical field

The present invention relates to remote control technology field, especially a kind of field data collection device.

Background technology

The appearance of remote control technology is the inevitable outcome that computer networking technology combines with failure monitoring technology. Early stage remote control technology is non real-time non-on-line monitoring mode, and remote modern monitoring technique is real time and on line monitoring mode, by means of computer, internet and the communication technology, operator can rely on and be arranged on on-the-spot various sensors and sound, video equipment, be separated by thousands of miles and just can understand at any time produced on-site and equipment situation, production scene is monitored, diagnoses and controlled. The pattern of remote control technology is inseparable with the development of the communication technology, is accompanied by the development of the communication technology, also development of remote monitoring pattern.

GPRS is a kind of novel data transmission technology of opening on existing GSM network. GPRS adopts the mode of packet switch, only in the time of actual transmission and reception data, just takies Radio Resource. GPRS can provide the transfer rate up to 171.2Kb/s in theory, and the advantage in speed, GPRS also has " always online ", connects instant feature fast, and communication cost is low.

Summary of the invention

The invention provides a kind of field data collection device based on GPRS Radio Transmission Technology, realize real-time online, reliability is high, expense is low wireless data acquisition system.

A kind of field data collection device, comprise microprocessor, GPRS module, memory module, reseting module, clock module, serial interface module, mould/number conversion module, sensor and power module, wherein memory module comprises flash memory and random access memory, power module provides corresponding operating voltage for whole system, GPRS module, memory module, reseting module, clock module, serial interface module are all directly connected with microprocessor, and sensor connects microprocessor by mould/number conversion module.

Further, described random access memory is synchronous DRAM SDRAM.

Further, described reseting module adopts IMP811 reset chip.

Further, described clock module is external oscillator, and system clock is provided.

Further, described serial interface module comprises RS232 and RS485 dual serial communication interface.

Further, described GPRS module is selected the MC39i that supports EGSM900 and GSM1800 Dual Band network.

The present invention combines data acquisition unit with GPRS Radio Transmission Technology, by means of the cordless communication network of mobile communication carrier, form virtual private data network and transmit sampled data, the advantage such as whole system has that network coverage is wide, transmission is reliable, dilatancy is good, networking flexibility, operation cost are low.

Brief description of the drawings

Fig. 1 is composition frame chart of the present invention.

Fig. 2 is reset circuit figure of the present invention.

Fig. 3 is RS232 serial interface circuit figure of the present invention.

Fig. 4 is RS485 serial interface circuit figure of the present invention.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

A kind of field data collection device, as shown in Figure 1, comprise microprocessor, GPRS module, memory module, reseting module, clock module, serial interface module, mould/number conversion module, sensor and power module, wherein memory module comprises flash memory and random access memory, power module provides corresponding operating voltage for whole system, GPRS module, memory module, reseting module, clock module, serial interface module are all directly connected with microprocessor, and sensor connects microprocessor by mould/number conversion module.

Dissimilar data pick-up is checked through the data of corresponding analog form, by mould/number conversion module, converts the data of digital form to, input microprocessor. Flash memory is selected NANDFlash, is used for storing data; Random access memory is selected synchronous DRAM SDRAM, and SDRAM has large, the low-cost advantage of unit space memory space. The memory cell of SDRAM can be understood as an electric capacity, always inclined discharge, and for avoiding loss of data, must periodic refreshing.

Described reseting module adopts IMP811 reset chip, not only can monitor 3.3V power supply, also has the moving hand-reset input of debounce, and reset circuit as shown in Figure 2. When Vcc is during lower than reset threshold, RESET is confirmed as low level and after reset condition is ended, keeps at least 140ms of low level, and in addition as long as hand-reset is input as low level, RESET is just Low level effective so.

The clock module of microprocessor is external oscillator, and system clock is provided.

A serial port of microprocessor obtains RS232 level by 232 level translator MAX3232, another serial port obtains RS485 level by 485 level translator MAX485, the connector of two serial ports is drawn with DB9/F serial terminal respectively, referring to Fig. 3, Fig. 4.

The above, be only specific embodiments of the invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.

Claims

1. a field data collection device, it is characterized in that: comprise microprocessor, GPRS module, memory module, reseting module, clock module, serial interface module, mould/number conversion module, sensor and power module, wherein memory module comprises flash memory and random access memory, power module provides corresponding operating voltage for whole system, GPRS module, memory module, reseting module, clock module, serial interface module are all directly connected with microprocessor, and sensor connects microprocessor by mould/number conversion module.

2. field data collection device according to claim 1, is characterized in that: described random access memory is synchronous DRAM SDRAM.

3. field data collection device according to claim 1, is characterized in that: described reseting module adopts IMP811 reset chip.

4. field data collection device according to claim 1, is characterized in that: described clock module is external oscillator, and system clock is provided.

5. field data collection device according to claim 1, is characterized in that: described serial interface module comprises RS232 and RS485 dual serial communication interface.

6. field data collection device according to claim 1, is characterized in that: described GPRS module is selected the MC39i that supports EGSM900 and GSM1800 Dual Band network.