CN102890863A - NRF905 module-based blind voice navigator - Google Patents
NRF905 module-based blind voice navigator Download PDFInfo
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- CN102890863A CN102890863A CN201210282772XA CN201210282772A CN102890863A CN 102890863 A CN102890863 A CN 102890863A CN 201210282772X A CN201210282772X A CN 201210282772XA CN 201210282772 A CN201210282772 A CN 201210282772A CN 102890863 A CN102890863 A CN 102890863A
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Abstract
The invention relates to an nRF905 module-based blind voice navigator, and belongs to the technical field of electromechanical automation and control. The navigator is characterized in that a shell, an operating keyboard and various interfaces are arranged outside a body; a transmitting and receiving module 1, a vehicle-mounted module 2, a voice playing module 3 and a power supply 4 are arranged in the body; the transmitting and receiving module 1 mainly comprises an nRF905 module, a frequency modulator, a transceiver, a power amplifier, a crystal oscillator and a regulator; the vehicle-mounted module 2 consists of microcontrollers CPU1 and CPU2, a liquid crystal display (LCD), a keyboard and a data memory; the voice playing module 3 consists of a main control chip AT89C51, a flash memory, a digital/analog (D/A) converter and a speaker; the transmitting and receiving module 1 is connected with the vehicle-mounted module 2 through a serial peripheral interface (SPI) and connected with an upper computer or a gateway through an RS232 serial interface; the microcontroller CPU1 in the vehicle-mounted module 2 is connected with the transmitting and receiving module 1; the microcontroller CPU2 is connected with the voice playing module 3 through an 8-bit parallel interface; and CPUs in the microcontrollers send information acquisition, voice playing, protection, communication and debugging instructions to execute the functions of a full-automatic voice station reporter.
Description
Technical field
The invention belongs to electromechanical automatic and control technology field thereof, particularly relate to a kind of blind person's Voice Navigation instrument based on the nRF905 module.
Background technology
Along with the development of modern society, blind person's trip also more and more comes into one's own, although the help of sidewalk for visually impaired people is arranged, still needs public transport for remote trip.At present China some than small city or small towns because cost insufficient investment and public transport operation route are shorter, add some local geographic position characteristics of consideration, be utilize steward's voice to propaganda directed to communicate to use wider.But this type of is called out the stops for blind person's trip and inapplicable, and how solving the problem that it is difficult that the blind person goes on a journey then is to need now to consider.
Therefore, purpose of the present invention is exactly according to above-mentioned design concept, overcomes the defective on the prior art, designs a kind of blind person's Voice Navigation instrument based on the nRF905 module.This system receives two parts by induction and emission and forms, induction system is contained on the loudspeaker of bus, the blind person is equipped with the key transmitter of a car formula with it, after pulling in, the blind person by the induction installation on the loudspeaker, just knows what has pulled in by starting middle transmitter, also know this car information such as how to walk, receive information after the blind person just can conveniently ride.
Summary of the invention
As follows in order to reach the purpose technical solution that realizes the present invention:
A kind of blind person's Voice Navigation instrument based on the nRF905 module is characterized in that: engine body exterior comprises casing, demonstration LCD, operation keyboard and each class interface, and its internal body comprises transmitting and receiving module 1, vehicle module 2, voice playing module 3, power supply 4.Described transmitting and receiving module (1) mainly is comprised of frequency modulator, transceiver, power amplifier, crystal oscillator, regulator and consists of; Described vehicle module (2) by two microcontroller CPU1 and CPU2, LCD demonstration, keyboard, data-carrier store consist of, described voice playing module 3 mainly is comprised of AT89C51, FLASH storer, D/A converter, loudspeaker.
Described a kind of blind person's Voice Navigation instrument based on the nRF905 module is characterized in that transmitting and receiving module 1 is connected with vehicle module 2 by the SPI serial line interface, is connected with host computer or gateway by the RS232 serial line interface.
Described a kind of blind person's Voice Navigation instrument based on the nRF905 module is characterized in that the microcontroller CPU1 in the described vehicle module 2 is connected with frequency modulator, transceiver, power amplifier, crystal oscillator, regulator, SPI serial line interface respectively; Microcontroller CPU2 is connected with PC communication ends, LCD demonstration, keyboard, 8 bit parallel data-interfaces respectively.
Described a kind of blind person's Voice Navigation instrument based on the nRF905 module is characterized in that the main control chip AT89C51 in the described voice playing module 3 is connected with FLASH storer, D/A converter, loudspeaker respectively.
Comprehensive above technical measures; described a kind of blind person's Voice Navigation instrument based on the nRF905 module is characterized in that the sampling, protection, communication, the debug command that have in the described microcontroller program module can ensure the concrete execution of low voltage motor protection controller function.
The main beneficial effect that enforcement the present invention can obtain is embodied in the following aspects:
1, provides feasibility for based on the Single Chip Microcomputer (SCM) system of microcontroller the high-capacity FLASH storer being carried out the voice document management, satisfied the requirement that the blind person identifies the public transport license number;
2, bus adopts automatic speech to call out the stops to be to make things convenient for the blind person, to increase satisfaction and the comfort level of blind-man riding, alleviate steward's labour intensity that the good method of improving service quality also is an important component part advocating the development intelligent transportation;
3, have defencive function, provide system reset when system's operation troubles or deadlock, the high-quality speech playback of at high speed playback system being recorded has realized telecommunication and Long-distance Control, and programmable state is set, and volume is little, installation, easy to use.
Description of drawings
Fig. 1 is that the said blind person's Voice Navigation of the present invention instrument forms structural drawing;
Fig. 2 is that the said transmitting and receiving module of the present invention consists of block diagram representation;
Fig. 3 is that the said vehicle module of the present invention consists of block diagram representation;
Fig. 4 is the said transmitting and receiving module main circuit of the present invention schematic diagram;
Fig. 5 is the said vehicle module main circuit of the present invention schematic diagram;
Fig. 6 is the said products panel embodiment of the present invention schematic diagram.
Embodiment
Provide example and do further referring to accompanying drawing and specify.Body fuselage adopts engineering plastics moulded section, and the high 15cm of the wide 7.5cm of long 9cm which is provided with liquid crystal display LCD, operating function keyboard and each class interface such as RS485 interface, RS232 interface.Its casing internal main will be provided with the circuit main board that comprises transmitting and receiving module, vehicle module, voice playing module, power supply, and it is nRF905 that nRF905 main control chip in the described transmitting and receiving module, this example are selected the main control chip model.Monolithic radio frequency emitter chip, operating voltage are 1.9-3.6V, and 32 pin QFN encapsulate (5mm * 5mm), work in 433/868/915MHz3 ISM channel.NRF905 can automatically finish and process prefix and CRT(CRC) work, can automatically finish Manchester's cde/decoding by hardware in the sheet, use SPI interface and micro-controller communications, configure very convenient, its power consumption is very low, electric current only has 11mA during with the output power emission of-10dBm, and electric current is 12.5mA when receiving mode.The effect of this chip has its two: 1, realizes the wireless data transceiving function, the data demodulates that receives is passed to AT89C51 make comparisons, and sequence number is passed to the playback part again; 2, do not need to add wave filter, power consumption is lower, and uses the GMSK modulation-demodulation technique, and antijamming capability is stronger, and CRC check is arranged again, and is more accurate, can be because not receiving wrong the name of station that reports an error.What the microcontroller CPU1 in the described vehicle module and CPU2 selected is the AT89C51 chip, this chip has 40 pins, 32 two-way I/O in outside (I/O) port, include simultaneously 2 outer middle fractures, 2 16 programmer timing counters, 2 full duplex serial communication ports can online programming, and general microprocessor and Flash memory combination are in the same place.Adopt the manufacturing of static CMOS technique, maximum operation frequency is 24MHz, and PDIP/DIP encapsulation and PQFP/TQFP, three kinds of encapsulation of PLCC/LCC are arranged.The relevant pin of its this chip is connected with LCD demonstration, keyboard, RS232 interface respectively.
Transmitting and receiving module is connected with vehicle module by the SPI serial line interface, is connected with host computer or gateway by the RS232 serial line interface.Transmitting and receiving module is finished the CRC check of the CRC check of transmitting data and receive data and low in energy consumption, and arranges according to system and to carry out corresponding action.Its CPU adopts technical grade super low-power consumption microprocessor, and its major function is: the outbound platform data are to transmitter module, and the startup emission; Receive data; RTC(is real-time); The control of Ultralow Power Control(super low-power consumption).
Vehicle module carries out communication by SPI serial line interface and transmitting and receiving module, finishes the demonstration of selected parameter.Microcontroller device CPU1 has sampling, protection with CPU2 Program module, communicates by letter, debug command to be to ensure the call out the stops concrete execution of function of bus automatic speech.In the circuit microcontroller CPU1 be responsible for and the platform transmitter unit between communication, the data after receiving, carry out computing by certain algorithm after, send CPU2, and CPU2 mainly is responsible for the broadcast of voice and the communication between the host computer, preservation platform data message.External input power is+12V, and conversion module adopts technical grade LDO to carry out the conversion of power supply, provides suitable 5 volts supply voltage to system power supply.
Voice playing module is connected with vehicle module by the data parallel interface, and main control chip AT89C51 receives the data that send, the content that control system will be play from transmitting and receiving module; Read corresponding content from the FLASH storer, then decoding sends playback system to and carries out playback; Receive external control signal, determine the languages of selected playback; Playback system is through D/A converter, and bandpass filter behind the high frequency circuit for rectifying, is given output amplifier, then carries out playback by loudspeaker.
Power supply of the present invention is divided into solar cell and lithium battery two parts for subsequent use.Provide electric energy by solar cell and lithium battery is charged daytime, and provide electric energy by lithium battery evening.Start external input power for behind+12V the power switch, main frame begins system initialization, such as operating system initialization, I/O initialization, timer initialization, serial ports initialization, creation task, conversion module adopts technical grade LDO to carry out the conversion of power supply, provides suitable supply voltage to enter normal operating condition to system power supply.
Claims (6)
1. blind person's Voice Navigation instrument based on the nRF905 module, it is characterized in that: engine body exterior comprises casing, shows LCD, operation keyboard and each class interface, comprises transmitting and receiving module (1), vehicle module (2), voice playing module (3) power supply (4) in its body; Described transmitting and receiving module (1) mainly is comprised of frequency modulator, transceiver, power amplifier, crystal oscillator, regulator; Described vehicle module (2) is comprised of two technical grade microprocessor CPUs 1 and CPU2, LCD demonstration, keyboard, data-carrier store; Described recording module (3) mainly is comprised of main control chip AT89C51, FLASH storer, D/A converter, loudspeaker.
2. a kind of blind person's Voice Navigation instrument based on the nRF905 module according to claim 1 is characterized in that: transmitting and receiving module (1) is connected with receiver module (2) by the SPI serial line interface, is connected with host computer or gateway by the RS232 serial line interface.
3. a kind of blind person's Voice Navigation instrument based on the nRF905 module according to claim 1, it is characterized in that: the technical grade microprocessor CPU 1 in the described transmitting and receiving module (1) is connected with frequency modulator, transceiver, power amplifier, crystal oscillator, regulator, SPI serial line interface respectively.
4. a kind of blind person's Voice Navigation instrument based on the nRF905 module according to claim 1, it is characterized in that: the technical grade microprocessor CPU 2 in the described vehicle module (2) is connected with PC communication ends, LCD demonstration, keyboard, 8 bit parallel interfaces respectively.
5. a kind of blind person's Voice Navigation instrument based on the nRF905 module according to claim 1 is characterized in that the main control chip AT89C51 in the described voice playing module (3) is connected with FLASH storer, D/A converter, loudspeaker respectively.
6. according to claim 1,2,3,4,5 described a kind of blind person's Voice Navigation instrument based on the nRF905 module, the concrete execution that it is characterized in that having sampling, protection in described microcontroller CPU1 and the CPU2 program module, communicate by letter, debug command can ensure the automatic speech station reporter function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210282772XA CN102890863A (en) | 2012-08-10 | 2012-08-10 | NRF905 module-based blind voice navigator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210282772XA CN102890863A (en) | 2012-08-10 | 2012-08-10 | NRF905 module-based blind voice navigator |
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| CN201210282772XA Pending CN102890863A (en) | 2012-08-10 | 2012-08-10 | NRF905 module-based blind voice navigator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714156C1 (en) * | 1997-04-05 | 1998-04-02 | Rtb Rehabilitations Technik Br | Information system for blind person, bus stop data service |
| CN201369101Y (en) * | 2009-01-23 | 2009-12-23 | 大连城帮科技有限公司 | Urban public transportation voice guidance system for blind |
| CN201387670Y (en) * | 2009-04-24 | 2010-01-20 | 张德好 | Stop announcing device for blind men |
| CN201876997U (en) * | 2010-09-30 | 2011-06-22 | 长安大学 | Intelligent bus arrival auxiliary system |
| KR101090368B1 (en) * | 2010-04-20 | 2011-12-07 | 성균관대학교산학협력단 | Traffic information system for visual handicapped person and method thereof |
| CN202306842U (en) * | 2011-09-28 | 2012-07-04 | 长安大学 | Instant message checking device of bus |
-
2012
- 2012-08-10 CN CN201210282772XA patent/CN102890863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714156C1 (en) * | 1997-04-05 | 1998-04-02 | Rtb Rehabilitations Technik Br | Information system for blind person, bus stop data service |
| CN201369101Y (en) * | 2009-01-23 | 2009-12-23 | 大连城帮科技有限公司 | Urban public transportation voice guidance system for blind |
| CN201387670Y (en) * | 2009-04-24 | 2010-01-20 | 张德好 | Stop announcing device for blind men |
| KR101090368B1 (en) * | 2010-04-20 | 2011-12-07 | 성균관대학교산학협력단 | Traffic information system for visual handicapped person and method thereof |
| CN201876997U (en) * | 2010-09-30 | 2011-06-22 | 长安大学 | Intelligent bus arrival auxiliary system |
| CN202306842U (en) * | 2011-09-28 | 2012-07-04 | 长安大学 | Instant message checking device of bus |
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Application publication date: 20130123 |