CN101986765A - Singlechip-based low-power consumption networking positioning instrument - Google Patents
Singlechip-based low-power consumption networking positioning instrument Download PDFInfo
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- CN101986765A CN101986765A CN2010105221746A CN201010522174A CN101986765A CN 101986765 A CN101986765 A CN 101986765A CN 2010105221746 A CN2010105221746 A CN 2010105221746A CN 201010522174 A CN201010522174 A CN 201010522174A CN 101986765 A CN101986765 A CN 101986765A
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Abstract
The invention relates to a singlechip-based low-power consumption networking positioning instrument, which comprises a control module, a global positioning system (GPS) module, a wireless data transmission module, a sensor module and a display and alarm module. The control module is any singlechip in 51 series and is externally connected with the GPS module, the wireless data transmission module, the sensor module and the display and alarm module; the wireless data transmission module is a multi-channel micropower embedded wireless data transmission module; the sensor module comprises a micro-electromechanical system (MEMS) pressure sensor and a terrestrial magnetic sensor; the GPS module, the MEMS pressure sensor and the terrestrial magnetic sensor acquire air pressure, temperature and terrestrial magnetic information to transmit the information to the control module; and a core processor comprehensively processes the acquired information, transmits the information to each node equipment in a network through the wireless data transmission module and displays the information through the display module. The networking positioning instrument can measure three-dimensional spatial information of a location, measure the temperature and air pressure, and provide more practical and quick service.
Description
Technical field
The present invention relates to a kind of position indicator, but particularly relate to a kind of SCM Based low-power consumption networking position indicator.
Background technology
Prefix abbreviation along with the English Global Position of GPS(System, it is global positioning system, utilize navigation satellite to provide temporal information real-time, high accuracy three-dimensional speed for global user) the deepening continuously of application study, a large amount of GPS subscriber equipmenies have been used for aspects such as the navigation, the observing and controlling of guided missile satellite, accurate time transmission, operational training, petroleum resources exploitation of naval vessel, aircraft.In recent years, the range of application of GPS is also included in the tracking of vehicle and navigation, agricultural, public security and tourism etc. in.As the core technology of the typical integrated application system of GPS (as personal navigation system, GPS vehicle monitoring system etc.), all relate to collection and wireless network transmissions how under mobile environment, to finish gps data at present.Realization to this technology mainly is to adopt the accurate specialized hardware of notebook computer, PDA or valency as hardware platform both at home and abroad, and relevant peripheral hardwares such as GPS, GPRS or GSM.Because the hardware that relates to of system is more, project investment and construction cycle are longer, later stage operation cost height, so these systems can only be applied to some industry, use is restricted.
Summary of the invention
The present invention is directed to that existing GPS position indicator price height, function are perfect inadequately, troublesome poeration and the deficiency that can't freely communicate by letter, but a kind of SCM Based low-power consumption networking position indicator is proposed, can record the three-dimensional spatial information of present position and air pressure, temperature environment information, can carry out the low discharge data communication by wireless data sending again, with various message transmission to other position indicators of consolidated network.
The technical solution adopted in the present invention:
But a kind of SCM Based low-power consumption networking position indicator, contain control module, GPS module, wireless data transfer module, sensor assembly, demonstration and alarm module, it is core processor that described control module adopts any single-chip microcomputer of 51 series, the external GPS module of control module, wireless data transfer module, sensor assembly, demonstration and alarm module, described wireless data transfer module are selected multichannel micropower embedded radio digital transmission module for use; Sensor assembly comprises MEMS pressure sensor and geomagnetic sensor; GPS module, MEMS pressure sensor and geomagnetic sensor sensor acquisition air pressure, temperature and earth magnetism message transmission are to control module, by core processor the various information of GPS module, sensor assembly collection are carried out integrated treatment, by wireless data transfer module information is passed to each node device on the network, and three-dimensional, air pressure, the elevation information that processing obtains shown by display module.
But described SCM Based low-power consumption networking position indicator, the GPS module is selected the C3-470CGPS module for use; Wireless data transfer module is selected multichannel micropower embedded radio digital transmission module APC230-43 for use; The control module core processor adopts the STC12C5A60S2 single-chip microcomputer of Chinese macrocrystalline company, the external memory circuit of described single-chip microcomputer, key control circuit, oscillating circuit, reset circuit, and memory circuit adopts the AT24c1024 memory; The GPS module is connected single-chip microcomputer by the control corresponding port with FPDP respectively with wireless data transfer module.
But described SCM Based low-power consumption networking position indicator, the MEMS pressure sensor adopts BMP085, and geomagnetic sensor adopts MEMS two axial magnetic sensor MMC212; Pressure sensor BMP085 passes through I
2The C bus directly links to each other with processor, (measure atmospheric pressure and ambient temperature, and correct height by air pressure); Geomagnetic sensor is connected single-chip microcomputer by the control corresponding port with FPDP, measures magnetic field, place, place at X, and the component information of Y direction obtains direction to the north pole by single-chip microcomputer by algorithm.
But described SCM Based low-power consumption networking position indicator, sensor assembly comprises acceleration transducer, described acceleration transducer adopts a single-chip MMA7260 3-axis acceleration sensor of U.S. Freescale company; Described acceleration transducer is connected single-chip microcomputer by the control corresponding port with FPDP respectively.
But described SCM Based low-power consumption networking position indicator, display module adopts NOKIA 5110 LCD LCDs in demonstration and the alarm module, described LCD LCDs adopts serial line interface to be connected with microcontroller communication, alarm module adopts a loud speaker to insert the one-level amplifier circuit, and described amplifier control base stage connects the corresponding I/0 output port of single-chip microcomputer by a coupling resistance.
Useful good effect of the present invention:
But 1, the present invention is based on the low-power consumption networking position indicator of single-chip microcomputer, wireless sensor network technology is applied in traditional spatial Information Service, can obtain spatial information and can obtain environmental parameter again, can also freely communicate by letter.The location-based service mechanism that the present invention is traditional with revolutionary change, make people as main body, as the real world of object and via seamless the combining of the digital world three of Network Transmission, realize not being subjected to the interaction of any time and limited space, final purpose is the interactive mode that essence ground changes people and digital earth, people and real world, can provide brand-new work pattern as navigation, digital battlefield, intelligent transportation, tourism, exploration, amusement etc. for any operating system based on the space.Application and application prospect will be more wide.
But 2, the present invention is based on the low-power consumption networking position indicator of single-chip microcomputer, can measure the location three-dimensional spatial information, can measure temperature, air pressure again, final priority main website mandate wireless network by making up by wireless data sending, with message transmission to other equipment.Can be the user provides practicality more to serve efficiently.Each functional module such as single-chip microcomputer that adopts and transducer all possesses characteristics low in energy consumption, that volume is little, adopts 3.7V cellular li-ion battery commonly used easily to satisfy the demands, make this position indicator often between stable operation.
Description of drawings
Fig. 1: but the present invention is based on the low-power consumption networking position indicator theory diagram of single-chip microcomputer;
Fig. 2: but networking position indicator control module circuit theory schematic diagram;
Fig. 3: the interface circuit of GPS module and single-chip microcomputer;
Fig. 4: the interface circuit of wireless data transfer module and single-chip microcomputer;
Fig. 5: pressure sensor module BMP085 circuit theory diagrams;
Fig. 6: diaxon geomagnetic sensor MMC212 circuit theory diagrams;
Fig. 7: 3-axis acceleration sensor circuit theory diagrams;
Fig. 8: demonstration and alarm module and with the interface circuit of single-chip microcomputer.
Embodiment
Embodiment one: referring to Fig. 1, but the present invention is based on the low-power consumption networking position indicator of single-chip microcomputer, contain control module, GPS module, wireless data transfer module, sensor assembly, demonstration and alarm module, it is core processor that described control module adopts any single-chip microcomputer of 51 series, the external GPS module of control module, wireless data transfer module, sensor assembly, demonstration and alarm module, described wireless data transfer module are selected multichannel micropower embedded radio digital transmission module for use; Sensor assembly comprises MEMS pressure sensor and geomagnetic sensor; GPS module, MEMS pressure sensor and geomagnetic sensor sensor acquisition air pressure, temperature and earth magnetism message transmission are to control module, by core processor the various information of GPS module, sensor assembly collection are carried out integrated treatment, by wireless data transfer module information is passed to each node device on the network, and three-dimensional, air pressure, the elevation information that processing obtains shown by display module.
Embodiment two: referring to Fig. 2～Fig. 6, and Fig. 8.But the SCM Based low-power consumption networking of present embodiment position indicator, the GPS module is selected the C3-470CGPS module for use; Wireless data transfer module is selected multichannel micropower embedded radio digital transmission module APC230-43 for use; The control module core processor adopts the STC12C5A60S2 single-chip microcomputer of Chinese macrocrystalline company, the external memory circuit of described single-chip microcomputer, key control circuit, oscillating circuit, reset circuit, and memory circuit adopts the AT24c1024 memory; The GPS module is connected single-chip microcomputer by the control corresponding port with FPDP respectively with wireless data transfer module.The MEMS pressure sensor adopts BMP085, and geomagnetic sensor adopts MEMS two axial magnetic sensor MMC212; Pressure sensor BMP085 passes through I
2The C bus directly links to each other with processor, (measure atmospheric pressure and ambient temperature, and correct height by air pressure); Geomagnetic sensor is connected single-chip microcomputer by the control corresponding port with FPDP, measures magnetic field, place, place at X, and the component information of Y direction obtains direction to the north pole by single-chip microcomputer by algorithm.Display module adopts NOKIA 5110 LCD LCDs in demonstration and the alarm module, described LCD LCDs adopts serial line interface to be connected with microcontroller communication, alarm module adopts a loud speaker to insert the one-level amplifier circuit, and described amplifier control base stage connects the corresponding I/0 output port of single-chip microcomputer by a coupling resistance.
Embodiment three: but the SCM Based low-power consumption networking of present embodiment position indicator, different with embodiment two is: sensor assembly comprises acceleration transducer, and described acceleration transducer adopts a single-chip MMA7260 3-axis acceleration sensor of U.S. Freescale company; Described acceleration transducer is connected single-chip microcomputer by the control corresponding port with FPDP respectively.
Control module comprises core processor, Peripheral storage circuit, key control circuit, oscillating circuit, reset circuit; Core processor adopts the enhancement mode 51 single-chip microcomputer STC12C5A60S2 of Chinese macrocrystalline company as core processor, this single-chip microcomputer adopts macrocrystalline the 6th generation encryption technology to decipher, superpower antijamming capability, speed is fast, many IO mouth (two serial ports, integrated AD conversion), the ram in slice memory space is big, support the power down arousal function, super low-power consumption is applicable to battery power supply system.Cheap, powerful, be suitable on the portable equipment very much.Peripheral storage adopts AT24c1024 1,048, the storage of 576bits super large, I
2The C data communication has power-down protection, makes things convenient for storing queries, record data.Adopt five buttons (S1 upturning key, S2 downturning key, S3 options button, S4 return key, S5 ok key) to finish integrated operation, can also simply change screen by the 3-axis acceleration sensor of sensor assembly and show survey meter, convenient and swift.
GPS possesses location and time service function.Embedded GPS module receiving satellite signal in this position indicator, possess show current longitude and latitude, highly, time data, shows current direction of advance, speed, the function of record and demonstration flight path.Can select the C3-470CGPS module for use.The C3-470C main feature is as follows: (1) volume is little, exquisite external form: 35mm * 35mm * 3mm, and built-in aerial is convenient to be embedded in portable apparatus.(2) precision height: can search for nearly 20 satellite channels, make the position precision less than 10m.(3) high sensitivity-155dBm.(4) lack positioning time, adapt to complex environment: the ARM7TDMI processor of global positioning system integrated DSP and real-time clock (RTC) and the FLASH memory of 4MB, powerful data-handling capacity makes renewal rate reach 1HZ.(5) low in energy consumption: Overall Power Consumption is 20mA only.(6) scope of application is wide: height above sea level is up to 60,000 feet.See Fig. 3 with the interface circuit of single-chip microcomputer.
Wireless data transfer module is selected APC230-43 multichannel micropower embedded radio digital transmission module for use.Transmission range is far away, channel is many, low in energy consumption.Module adopts the error correction and detection coding that interweaves that circulates efficiently, the modulation system of GFSK, and anti-interference all high than religion with sensitivity, maximum can be entangled the continuous burst error of 24bits.1800 meters transmission ranges.Operating frequency 418-455MHz(1KHz stepping), multichannel is selected (greater than 100 channels).USART interface, but online modification serial ports speed, transmitting power, various parameters such as radio frequency speed.The 256bytes data buffer zone of super large is fit to the big data quantity transmission.Built-in house dog guarantees operation reliably and with long-term.See Fig. 4 with single-chip microcomputer wiring circuit.The communication channel of APC230-43 is semiduplex, can finish any to a bit, and any is to the communication of multiple spot.These two kinds of modes at first need to establish 1 main website, and all the other are slave station, and all websites all must be provided with a unique address.The coordination of communication is controlled by main website, and main website adopts the Frame of band address code to send data or order, and all slave stations receive all, and with the address code and the comparison of this machine address code that receive, the address difference is not then done response, if address code is identical, then the data that receive is sent out.Networking must guarantee in any one moment to have only a radio station to be in transmit status in the same frequency communication network, in order to avoid the phase mutual interference.Main website authorizes slave station by inquiry mode with transmission route, waits for that slave station sends communication request.APC230-43 can be provided with a plurality of channels, so can and deposit at the zone a plurality of networks of realization.
Native system original creation priority main website authorized agreement networking agreement.What adopt single point-to-multipoint delivery protocol construction is star network.Its networking is simple, but network coverage area is little, and utilance is low.Network reliability is relatively poor, and main station failure can cause the paralysis of whole wireless network.System adopts priority main website authorized agreement, and the priority of all websites promptly is set in advance, and what priority was the highest is the core main website.Realize network function in the following manner: I core main website poll also upgrades the information of slave station, do not listen to a certain slave station A information if find in the certain hour, the information of slave station A is received in the inquiry of core main website for the last time, find out currently, and authorize slave station B the main website authority from the nearest slave station B in slave station A rearmost position.B became and acted on behalf of main website this moment, and task is to monitor the information of slave station A.After monitoring finishes, give the core main website with feedback information, and return the main website authority.II be if the Query Information that slave station is not received the core main website within a certain period of time or acted on behalf of main website can think that the core main website is out of order, and the limit priority level slave station in this moment network is automatically changeb to the core main website, carries out main website power, no longer pays the main website authority.Both guarantee co-channel communication condition, strengthened the coverage of wireless network again, improved its reliability and practicality greatly.
System has adopted this kind communication protocol, and the node device of same channel all can obtain the various information of other nodes.The same area allows a plurality of networks again and deposits.Team such as the tourism of this equipment of application, exploration, mountain-climbing can easily obtain teammate's information, and both convenient management can in time be called out and the rescue teammate at crucial moment again.
Sensor assembly comprises the MEMS pressure sensor that a plurality of transducers: BMP085 is a high accuracy, super low energy consumption, can be applied in the mobile device.Its performance brilliance, absolute precision is minimum can to reach 0.03hPa, and power consumption is extremely low, has only 3 μ A.BMP085 adopts powerful 8-pin pottery leadless chip carrying (LCC) ultra-thin encapsulation, contains temperature output, can pass through I
2The C bus directly links to each other with various microprocessors.Main feature: pressure limit: 9000 meters-500 meters of 300-1100hPa(height above sea level); The 1.62V of supply voltage: 1.8V-3.6V(VDDA)-3.6V(VDDD); Operating temperature range :-40 ℃ ~ 85 ℃; Size: 5.0mmx5.0x1.2mm; Low-power consumption: 5 μ A are in mode standard, standby current 0.1 μ A; High accuracy: low-power consumption mode resolution is 0.06hPa(0.5 rice) high linear resolution is 0.03hPa(0.25 rice); Temperature accuracy: 0.1 ℃; Reaction time: 7.5ms.Utilize the above-mentioned advantage of BMP085, this position indicator not only possesses the function of accurate measurement atmospheric pressure, ambient temperature, and can correct height by air pressure.Variation by analyse atmos pressure and ambient temperature can be carried out short-period forecast weather.
Geomagnetic sensor uses MEMS two axial magnetic sensor MMC212 to measure magnetic field, place, place at X, and the component of Y direction obtains direction to the north pole by algorithm.
Show and alarm module: position indicator adopts NOKIA5110 mobile phone 84x48LCD liquid crystal as display module.This module is widely used in the display system of all kinds of portable sets.Adopt serial line interface and primary processor to communicate, interface signal line quantity reduces significantly.Support multiple serial communication protocol, transmission rate can write video data, the no stand-by period at full speed up to 4Mbps.LCD controller/driver chip has been tied on the LCD wafer, and the module volume is little.Adopt to adopt low voltage power supply, the operating current when normally showing and has power-down mode below 200 μ A.Select for use this LCD clearly conveniently to show and can reduce information needed unnecessary power consumption again and be fit to long-term trip tourist activity.Select for use buzzer to take place, convenient prompting and warning.Each functional module of this position indicator all possesses characteristics low in energy consumption, that volume is little, adopts 3.7V cellular li-ion battery commonly used easily to satisfy the demands, make this position indicator often between stable operation.
System adopts a low-cost single chip MMA7260 3-axis acceleration sensor of the up-to-date release of U.S. Freescale.This minisize condenser type acceleration transducer has merged signal condition, single-stage low pass filter and technique for temperature compensation, and provide four kinds of acceleration analysis scopes (1.5g-+1.5g ,-2.0g-+2.0g ,-4.0g-+4.0g ,-6.0g-+6.0g).MMA7260 also has very high sensitivity, when selection-1.5g-+during the measuring range of 1.5g, sensitivity reaches 800mv/g.It adopts the encapsulation of 6mm x 6mm x 1.45mm QFN, and volume is little.Simultaneously MMA7260 provides park mode, is the choosing of ideal of the handheld device product of battery charge.It has three axial measuring abilities, portable set can intelligence back direction, position, mobile variation.Can make this equipment have that the toggle screen of shaking shows can the human body attitude, and the function that the people reports to the police automatically makes this position indicator more effective aspect rescue.
Claims (5)
1. but SCM Based low-power consumption networking position indicator, contain control module, GPS module, wireless data transfer module, sensor assembly, demonstration and alarm module, it is core processor that described control module adopts 51 any single-chip microcomputers of series, the external GPS module of control module, wireless data transfer module, sensor assembly, demonstration and alarm module is characterized in that: described wireless data transfer module is selected multichannel micropower embedded radio digital transmission module for use; Sensor assembly comprises MEMS pressure sensor and geomagnetic sensor; GPS module, MEMS pressure sensor and geomagnetic sensor sensor acquisition air pressure, temperature and earth magnetism message transmission are to control module, by core processor the various information of GPS module, sensor assembly collection are carried out integrated treatment, described control module connection demonstration and alarm module and three-dimensional, air pressure, elevation information that the core processor processing is obtained show that by display module control module passes to each node device on the network by wireless data transfer module with information.
But 2. SCM Based low-power consumption networking position indicator according to claim 1, it is characterized in that: the GPS module is selected the C3-470CGPS module for use; Wireless data transfer module is selected multichannel micropower embedded radio digital transmission module APC230-43 for use; The control module core processor adopts the STC12C5A60S2 single-chip microcomputer of Chinese macrocrystalline company, the external memory circuit of described single-chip microcomputer, key control circuit, oscillating circuit, reset circuit, and memory circuit adopts the AT24c1024 memory; The GPS module is connected single-chip microcomputer by the control corresponding port with FPDP respectively with wireless data transfer module.
3. but SCM Based low-power consumption networking position indicator according to claim 2 is characterized in that: the MEMS pressure sensor adopts BMP085, and geomagnetic sensor adopts MEMS two axial magnetic sensor MMC212; Pressure sensor BMP085 passes through I
2C directly links to each other with processor; Geomagnetic sensor is connected single-chip microcomputer by the control corresponding port with FPDP, measures magnetic field, place, place at X, and the component information of Y direction obtains direction to the north pole by single-chip microcomputer by algorithm.
4. but SCM Based low-power consumption networking position indicator according to claim 3, it is characterized in that: sensor assembly comprises acceleration transducer, and described acceleration transducer adopts a single-chip MMA7260 3-axis acceleration sensor of U.S. Freescale company; Described acceleration transducer is connected single-chip microcomputer by the control corresponding port with FPDP respectively.
5. but according to each described SCM Based low-power consumption networking position indicator of claim 1～4, it is characterized in that: display module adopts NOKIA 5110 LCD LCDs in demonstration and the alarm module, described LCD LCDs adopts serial line interface to be connected with microcontroller communication, alarm module adopts a loud speaker to insert an amplifier circuit, and described amplifier control base stage connects the corresponding I/0 output port of single-chip microcomputer by a coupling resistance.
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| CN104837144A (en) * | 2015-03-20 | 2015-08-12 | 张韶冬 | Internet of things system networking based on ISM frequency bands below 1GHz |
| CN111337964A (en) * | 2020-03-25 | 2020-06-26 | 西安微电子技术研究所 | Multifunctional real-time measurement storage device for high-dynamic moving objects |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102539054A (en) * | 2011-12-28 | 2012-07-04 | 上海芮仕信息技术有限公司 | Low-power-consumption battery power supply wireless remote transmission sensor |
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| CN104683068A (en) * | 2015-02-14 | 2015-06-03 | 河南辉瑞生物医电技术有限公司 | PWM-based one-way master-slave multi-computer communication method |
| CN104683194A (en) * | 2015-02-14 | 2015-06-03 | 河南辉瑞生物医电技术有限公司 | PWM-based one-way master-slave one-to-many multi-computer communication method |
| CN104717110A (en) * | 2015-02-14 | 2015-06-17 | 河南西瑞医疗电子技术有限公司 | Transmitting method based on PWM master-slave type one-way multi-computer communication |
| CN104780084A (en) * | 2015-02-14 | 2015-07-15 | 河南西瑞医疗电子技术有限公司 | Sending method for PWM (Pulse Wavelength Modulation) master-slave one-way multi-computer communication |
| CN104837144A (en) * | 2015-03-20 | 2015-08-12 | 张韶冬 | Internet of things system networking based on ISM frequency bands below 1GHz |
| CN111337964A (en) * | 2020-03-25 | 2020-06-26 | 西安微电子技术研究所 | Multifunctional real-time measurement storage device for high-dynamic moving objects |
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Application publication date: 20110316 |