CN104122822B - GPRS (General Packet Radio Service)-based environment data exchanger - Google Patents
GPRS (General Packet Radio Service)-based environment data exchanger Download PDFInfo
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- CN104122822B CN104122822B CN201410357633.8A CN201410357633A CN104122822B CN 104122822 B CN104122822 B CN 104122822B CN 201410357633 A CN201410357633 A CN 201410357633A CN 104122822 B CN104122822 B CN 104122822B
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Abstract
The invention provides a GPRS-based environment data exchanger for overcoming the deficiency that a portable data exchange is unable to meet the needs of distributed application in the prior art. The GPRS-based environment data exchanger comprises a system board, a mother board and a power supply board, wherein the system board and the power supply board are arranged on the mother board in a plug-in mode and the mother board is provided with a GPRS communication unit. The GPRS-based environment data exchanger is quick in operation speed, more in interface, small in size and capable of facilitating the improvement of system performance and the reliability of environment monitoring data.
Description
Technical field
A kind of the invention belongs to data communication technology field, in particular it relates to environmental data exchanger based on GPRS.
Background technology
Bridge between Environmental Monitoring Network Zhong Shi monitoring center and analysis and detecting instrument for the portable data exchanger.Ring
Border monitoring network obtains detection data by portable data exchanger, implements remotely control and remote maintenance to detecting instrument.
In occasions such as environmental monitoring management, on-site law-enforcings, portable data exchanger will can provide required detection time, geography
The accurate information of position.From the many-sided consideration of performance, volume, power consumption, cost and upgradability, currently wide variety of embedded
Formula system is the ideal structure of portable data exchanger.
China region is wide, environment is complicated, environmental monitoring demand is various, though and the environment measuring instrument that domestic enterprise produces
So species is a lot, but mostly lacks Internet communication capacity, and data-interface is not sought unity of standard；The Environmental Monitoring Network mistake of each department
Go statistics in the way of manually reporting for a long time, not enough to disposal ability the problems such as sudden pollusion atmospheric, meet an urgent need and refer to
Wave, dispatch, coordinating, information, the mechanism such as rescue not perfect.
Additionally, the power supply supply for this equipment also rests on the state that online power supply is powered at present.It is interrupted when in short-term
When electric, by the reliability of extreme influence environmental monitoring data.
Content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of environmental data exchanger based on GPRS, including：
System board, motherboard and power panel, described system board and described power panel are plugged on described motherboard, and described motherboard setting GPRS leads to
Letter unit.
Further, described system board includes processor and memory.
Further, described motherboard also includes GPS module and serial port module.
Further, described motherboard also includes battery charging module.
Further, described system board include 1 ARM9 chip S3C2410, the FLASH of 1 8M × 16 bit data width,
The SDRAM of two 16M × 16 bit data width.
Further, described GPRS communication unit is connected with S3C2410 chip by serial ports, and includes：Power interface,
3.3VSIM card interface, the input of two microtelephones and two miniature raise device output, general purpose I/O, A/D converter, 5 × 5 keyboards
Interface, buzzer output, a RS232 serial ports.
Further, described motherboard also includes GPRS communication unit power supply circuits, and this power supply circuits includes digital power system electricity
Road and radio frequency powered circuit.
Further, described radio frequency powered circuit and described digital power system circuit be respectively adopted the lithium battery being connected in parallel with
And the linear voltage regulator in parallel with this lithium battery.
Further, described battery charging module includes the battery of the first lithium battery being connected in parallel to each other and the second lithium battery
Group, also includes the charge control module that two lithium batteries are charged respectively, and described charge control module includes transformer, voltage passes
Sensor, current sensor, temperature sensor, metal-oxide-semiconductor and timer and selector, voltage sensor, current sensor and temperature
Degree sensor output respectively pass through analog-digital converter connection three comparators respective input, these three comparators another
One input is respectively provided with the data signal with predetermined value, result of the comparison through negating gate circuit and and gate circuit, feedback
To the base stage of metal-oxide-semiconductor, the input of described transformer connects charge power supply, and the output signal of described timer connects selector
Selection signal input, the output end of another input connection transformer of selector, the output end of selector connects metal-oxide-semiconductor
Colelctor electrode.
The beneficial effects of the present invention is：The market demand and relatively more close remote monitoring in analysis environments monitoring network
And on the basis of data collecting system, complete the hardware circuit of the portable data exchanger based on ARM9 chip S3C2410
Develop.The data-interfaces such as RS232, USB of connecting detection instrument are provided, and there is the function mould such as GPRS, GPS, lithium cell charging
Block.Hardware circuit is the basis of embedded system.Portable data exchanger adopts 32 single-chip microcomputers of ARM9 kernel
S3C2410, fast operation, rich interface, be conducive to improving systematic function, reduce volume.Public using mobile communication GPRS
Real-time performance telecommunication, can reduce networking and maintenance cost, and data transfer is fixed against Internet network, be
The development trend of telecommunication at present.Portable data exchanger carries real-time clock and GPS location function, optional according to demand
Add with selecting touch-screen show, the function such as keyboard, phone.Devise lithium battery charging circuit, ensureing that continuously work is instrument
On the premise of time, reduce weight and volume as far as possible.Portable data exchanger adopts Embedded System Structure, and control chip selects
Use ARM9
32 single-chip microcomputer S3C2410 of core, are conducive to improving performance, reduce volume, reduce power consumption；Portable data is handed over
Parallel operation, using ripe industrial GPRS module, GPS module, is realized telecommunication and is obtained geographical location information；Power supply is using high
The lithium battery of energy density, and have developed charging circuit.In hardware circuit design, on the basis of completing major function, be by
Carry out system upgrade to make allowances.
Brief description
Fig. 1 shows the structured flowchart of system board；
Fig. 2 shows GPRS communication unit circuit diagram；
Fig. 3 shows the circuit diagram of GPRS power supply circuits.
Specific embodiment
Based on the environmental data exchanger of GPRS, including：System board, motherboard and power panel, described system board and described electricity
Source plate is plugged on described motherboard, and described motherboard arranges GPRS communication unit.Described system board includes processor and memory.Institute
State motherboard and also include GPS module and serial port module.Described motherboard also includes battery charging module.
As shown in figure 1, the processor that the ARM920T kernel of Samsung, dominant frequency are 203MHz selected by processor
S3C2410, is a multiduty general-purpose chip, in the currently processor of numerous ARM9 kernels, relative low price, and performance
Moderate, it is widely used.The main feature of S3C2410：Dominant frequency is up to 203MHz；Expansion bus peak frequency 100MHz；32 digits
According to line, 27 external address bus；Real-time clock；Four DMA channel (supporting peripheral hardware DMA)；8 passage 10-bitADC；TFTLCD is controlled
Device processed；House dog；USB；IIC；SPI；The conventional peripheral assembly such as UART, is suitably applied multiple fields.
S3C2410 is 0.8 millimeter of BGA spherical package of 272 pin, and wiring is relatively difficult, and the operating frequency of bus reaches simultaneously
100MHz is higher to the electrical performance demands of circuit board.Therefore circuit board adopts 6 layers of PCB design, one layer of bus plane, and one layer connects
Stratum, four layer signal layers.System plate interface is the DIMM144 interface of notebook internal memory, and its 144 golden fingers will be believed by socket
Number draw.The product of some companies also has using contact pin interface, and two compare, and respectively has pluses and minuses.Contact pin interface stable connection,
The pin of S3C2410 all can be drawn, but operating frequency is slightly lower；DIMM144 good electric property, operating frequency is high, but shockproof
Property is poor, and number of pins is restricted.
The basic characteristics of module are as follows：Double frequency GSM/GPRS note data module, EGSM900/1800MHz or EGSM900/
1900MHz；WISMO2DGSM/GPRS modular voice encoding and decoding three are integrated, full rate, EFR and half rate (FR/
EFR/HR)；GPRS/GSM module small volume and power consumption are low；Speech, fax, note and data function, design for application-specific
AT command remote control system；AT order controls (GSM07.07 and 07.05)；Serial port baud rate is by 300 to 115,200bits/s.
The data characteristics of wherein Q2403 module GSM/GPRS part：
Support class2, download 26.8kbits/s, upload 13.4kbits/s；Data circuit asynchronous transmission and synchronous up to
14,400bits/s；
Automated facsimile group3 (class1＆2), call and fax conversion；IrDA1.2A agreement；Support GPRSWAP.
Q2403 external connection is 60 pin connectors, including：Power interface, 3.3VSIM card interface, two microtelephones are defeated
Enter and two miniature raise device output, general purpose I/O, A/D converter, 5 × 5 keyboard interfaces, the output of buzzer, RS232 string
Mouthful etc..
In portable data exchanger shown in GPRS partial circuit Fig. 2.
GPRS module is connected with S3C2410 chip by serial ports in MODEM mode, during design backplane circuit, except necessary real
Outside existing SIM circuit, antenna circuit and serial port circuit, also achieve the circuit such as loudspeaker, buzzer, network indicator lamp.Just
The formula data exchange unit of taking has the ability by GPRS mode transmission data, can also complete the call work(of plain old telephone simultaneously
Energy.
GPRS module should be noted the circuit design of power unit.The numerical portion operating voltage range of GPRS module
3.1V—4.5V；Radio frequency part operating voltage range 3.3V 4.5V, during idle pulley, operating current is less, about 100 microamperes；Electricity
When words are connected, peak point current can reach 2 amperes.The power supply mode once adopting in development process：
2 section lithium batteries are in parallel directly to power, by the line style voltage-stablizer of low voltage difference for the radio frequency part of GPRS module
SP6200 obtains 3.3V, is that numerical portion is powered.Shown in circuit Fig. 3.
Circuit shown in Fig. 3 is more simple and reliable, the ceiling voltage 4.2V of lithium battery, can be fully used, because digital
Part operating current relatively low (being less than 150mA during normal work), overall power-efficient is low unlike first kind of way, finally
Using the second way.Radio frequency part increased jumbo electrochemical capacitor and provides power supply load capacity, and magnetic bead of having connected is to subtract
The little electromagnetic interference to numerical portion.
Portable type electronic product is using battery as power supply.The maximum feature of lithium battery is that specific energy is high.It is especially suitable for portable
The use of formula product.Specific energy refers to the energy of Unit Weight or unit volume.Such as：The rated voltage of No. 5 nickel-cadmium cells
For 1.2V, its capacity is 800mAh, then its energy is 0.96Wh.The rated voltage of No. 5 lithium batteries of same size is 3V, its appearance
Measure as 1200mAh, then its energy is 3.6Wh.The volume of both batteries is identical, then the ratio energy of lithium-manganese dioxide battery
Amount is 3.75 times of nickel-cadmium cell.In addition lithium battery has that discharge voltage is stable, operating temperature range width, self-discharge rate are low, storage
Deposit life-span length, memory-less effect and nuisanceless the advantages of.
Described battery charging module includes the battery pack of the first lithium battery being connected in parallel to each other and the second lithium battery, and it is right also to include
The charge control module that two lithium batteries charge respectively, described charge control module includes transformer, voltage sensor, electric current biography
Sensor, temperature sensor, metal-oxide-semiconductor and timer and selector, voltage sensor, current sensor and temperature sensor defeated
Go out to connect respectively the respective input of three comparators by analog-digital converter, another input of these three comparators is equal
Setting has the data signal of predetermined value, result of the comparison through negating gate circuit and and gate circuit, feed back to the base of metal-oxide-semiconductor
Pole, the input of described transformer connects charge power supply, and the selection signal of the output signal connection selector of described timer is defeated
Enter end, the output end of another input connection transformer of selector, the output end of selector connects the colelctor electrode of metal-oxide-semiconductor.
Described voltage sensor, current sensor, temperature sensor and its corresponding comparator have two groups, right respectively
Answer terminal voltage, electric current and the temperature of two lithium batteries of ground detection.
After starting shooting or making this charging circuit standby by other means, under default situations, timer exports selection first and fills
The signal of power supply is to selector, and starts simultaneously at timing.When timer timing exceedes the scheduled time (such as 6 hours), just
Think that lithium battery now needs not continue to overcharge.Now, the output control selector of timer selects through transformer
The output of later power supply alternatively device.This is more much lower than above-mentioned charge power supply through the out-put supply of transformer, with to lithium
Battery carries out the charging of similar trickle mode.The size of this trickle repeatedly tested according to practical service environment use time and
Take its optimal value or empirical value.For example, when nominal charging voltage (i.e. charge power supply voltage) is 4.2V, in one case, should
Trickle charge voltage is 1.2V.
Additionally, when the temperature of lithium battery, voltage or electric current are higher or lower than predetermined threshold, the value of its output can also be through
Cross the above-mentioned selection input feeding back to selector with gate circuit output, as the control signal changing its charged state.
Although illustrating the present invention by the description of specific embodiments above and its purposes, reader is not
Foregoing teachings should be considered as limiting the scope of the present invention, the scope of the present invention is defined by the claims.
Claims (7)
1. a kind of environmental data exchanger based on GPRS, including：System board, motherboard and power panel, described system board and described
Power panel is plugged on described motherboard, and described motherboard arranges GPRS communication unit；Described motherboard also includes battery charging module, institute
State the battery pack that battery charging module includes the first lithium battery and the second lithium battery being connected in parallel to each other, also include to two lithium batteries
The charge control module charging respectively, described charge control module includes transformer, voltage sensor, current sensor, temperature
Sensor, metal-oxide-semiconductor and timer and selector it is characterised in that：
The output of voltage sensor, current sensor and temperature sensor connects three comparators by analog-digital converter respectively
Respective input, another input of these three comparators is respectively provided with the data signal with predetermined value, result of the comparison
Through negating gate circuit and and gate circuit, feed back to the base stage of metal-oxide-semiconductor, the input of described transformer connects charge power supply, institute
State timer output signal connect selector selection signal input, another input connection transformer of selector defeated
Go out end, the output end of selector connects the colelctor electrode of metal-oxide-semiconductor；
Described voltage sensor, current sensor, temperature sensor and its corresponding comparator have two groups, respectively correspondingly
The terminal voltage of two lithium batteries of detection, electric current and temperature；After starting shooting or making this charging circuit standby by other means, give tacit consent to feelings
Under condition, timer exports the signal selecting charge power supply first to selector, and starts simultaneously at timing, when timer timing exceedes
During the scheduled time, the lithium battery being considered as now needs not continue to overcharge, now, the output control selector choosing of timer
Select the output of power supply after transformer alternatively device, this carries out trickle through the out-put supply of transformer to lithium battery
The charging of mode；And, when the temperature when lithium battery, voltage or electric current are higher or lower than predetermined threshold, the value of its output also can
Enough selection inputs feeding back to selector through above-mentioned and gate circuit output, as the control letter changing its charged state
Number.
2. environmental data exchanger according to claim 1 is it is characterised in that described system board includes processor and storage
Device.
3. environmental data exchanger according to claim 1 is it is characterised in that described motherboard also includes GPS module and string
Mouth module.
4. environmental data exchanger according to claim 1 and 2 is it is characterised in that described system board includes 1 ARM9 core
Piece S3C2410, the FLASH of 1 8M × 16 bit data width, the SDRAM of two 16M × 16 bit data width.
5. the environmental data exchanger according to one of claim 1-3 is it is characterised in that described GPRS communication unit passes through
Serial ports is connected with S3C2410 chip, and includes：Power interface, 3.3VSIM card interface, two microtelephone inputs and two are micro-
Type raises device output, general purpose I/O, A/D converter, 5 × 5 keyboard interfaces, buzzer output, a RS232 serial ports.
6. environmental data exchanger according to claim 1 is it is characterised in that described motherboard also includes GPRS communication unit
Power supply circuits, this power supply circuits includes digital power system circuit and radio frequency powered circuit.
7. environmental data exchanger according to claim 6 is it is characterised in that described radio frequency powered circuit and described numeral
Power supply circuits are respectively adopted the lithium battery being connected in parallel and the linear voltage regulator in parallel with this lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357633.8A CN104122822B (en) | 2014-07-25 | 2014-07-25 | GPRS (General Packet Radio Service)-based environment data exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357633.8A CN104122822B (en) | 2014-07-25 | 2014-07-25 | GPRS (General Packet Radio Service)-based environment data exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104122822A CN104122822A (en) | 2014-10-29 |
| CN104122822B true CN104122822B (en) | 2017-02-15 |
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| CN201410357633.8A Active CN104122822B (en) | 2014-07-25 | 2014-07-25 | GPRS (General Packet Radio Service)-based environment data exchanger |
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| CN106933201A (en) * | 2015-12-31 | 2017-07-07 | 中核陕西铀浓缩有限公司 | The collection of digitlization engine speed and processing unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080094205A1 (en) * | 2006-10-23 | 2008-04-24 | Octave Technology Inc. | Wireless sensor framework |
| US8018204B2 (en) * | 2007-03-26 | 2011-09-13 | The Gillette Company | Compact ultra fast battery charger |
| JP5146726B2 (en) * | 2007-10-25 | 2013-02-20 | 日立工機株式会社 | Charger |
| CN101789167A (en) * | 2010-01-12 | 2010-07-28 | 广东工业大学 | Wireless sensor network system and method for monitoring farmland pollution areas |
| CN102143606A (en) * | 2011-03-07 | 2011-08-03 | 中国农业大学 | Wireless sensor network gateway for farmland information acquisition |
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Effective date of registration: 20191128 Address after: 233010 No.2, third floor, No.319, zhanggongshan Road, zhanggongshan street, Yuhui District, Bengbu City, Anhui Province Patentee after: Bengbu aochuang Intellectual Property Operation Co., Ltd Address before: 610000, No. 20, building 8, No. 1, 8 South Celestial tree road, Chengdu hi tech Development Zone, Sichuan, 4 Patentee before: CHENGDU LANYU KEWEI TECHNOLOGY CO., LTD. |
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Effective date of registration: 20201103 Address after: 221106 Tongshan sub district office, Tongshan District, Xuzhou City, Jiangsu Province Patentee after: XUZHOU SANHE AUTOMATIC CONTROL EQUIPMENT Co.,Ltd. Address before: 233010 No.2, third floor, No.319, zhanggongshan Road, zhanggongshan street, Yuhui District, Bengbu City, Anhui Province Patentee before: Bengbu aochuang Intellectual Property Operation Co.,Ltd. |
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Address after: 221001 rooms 105 and 103, building C2, safety science and Technology Industrial Park, East Yinshan Road, South Lijiang Road, high tech Industrial Development Zone, Xuzhou City, Jiangsu Province Patentee after: XUZHOU SANHE AUTOMATIC CONTROL EQUIPMENT Co.,Ltd. Address before: 221106 Tongshan sub District Office Tianjin Road East Yunhe Road South, Tongshan District, Xuzhou City, Jiangsu Province Patentee before: XUZHOU SANHE AUTOMATIC CONTROL EQUIPMENT Co.,Ltd. |