CN101075817A - Public emergent information receiver - Google Patents
Public emergent information receiver Download PDFInfo
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- CN101075817A CN101075817A CN 200710024556 CN200710024556A CN101075817A CN 101075817 A CN101075817 A CN 101075817A CN 200710024556 CN200710024556 CN 200710024556 CN 200710024556 A CN200710024556 A CN 200710024556A CN 101075817 A CN101075817 A CN 101075817A
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Abstract
The invention comprises: a RDS information receiving module, central controller, a LCD display screen, a text-to-speech conversion chip, a memory, an amplifier, and a power module.
Description
Technical field
The present invention relates to a kind of information receiving device, relate in particular to a kind of receiver of public emergent information.
Background technology
Development along with informationized society, people wish to grasp at any time and recognize important information, especially the understanding of public emergent information, in order to satisfy this demand of people, developed many moneys public emergent information receiver at present, the communication mode of this receiver mainly is to use the GSM mode, and display screen uses the LED electronic display, but shortcoming such as broadcast transmission, channel occupancy are many, cost height that the gsm communication mode is not suitable for, the volume of LED electronic display is big, power consumption is big, cost is higher.And the external mode of intelligence transmission of this receiver is also very single, can only show the word segment of relevant information by display screen.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, designed and developed out a kind of broadcast transmission that is fit to very much, cost is low, externally the various public emergent information receiver of the mode of intelligence transmission.
The present invention is achieved by the following technical solutions:
A kind of public emergent information receiver includes the core cell central control unit that communication instruction is explained in order to handle, image data is also decoded, the various signals of control send; Be used to store the memory cell of data; In order to carry out received signal, the decoding back is stored the information receiving module GSM information receiving module in the memory cell under the control of central control unit; The display floater LED display that shows in order to Word message with central control unit output; And in order to the power module of power supply to be provided;
Central control unit is connected with the GSM information receiving module is interactive; The shows signal output of central control unit is connected by data wire with the input of LED display; The data output end of central control unit is connected with the input of memory cell;
Wherein, described information receiving module is in order to receiving wireless frequency modulation signal and filtering and amplification, and carries out the RDS decoding, stores decoded information in the memory cell RDS information receiving module under the control of central control unit; The RDS information receiving module is connected with central control unit is interactive.
A kind of public emergent information receiver also includes: the literary composition language conversion chip that converts voice in order to the Word message with input to; Carry out power amplification and audio signal output power amplifier in order to signal that will input to loud speaker; With loud speaker in order to the broadcast language;
The control signal output ends of central control unit is connected with the input of literary composition language conversion chip; The output of memory cell is connected with literary composition language conversion chip input; The output of literary composition language conversion chip is connected with the power amplifier input; The audio signal output end of RDS information receiving module is connected with the power amplifier input; The power amplifier output is connected with the loud speaker input.
A kind of public emergent information receiver, described display floater are LCD display.
The present invention has following beneficial effect:
(1) after the reception early warning information, can report, can play better caution effect with mandarin pronunciation;
(2) audible segment adopts high performance special chip, and literary composition language conversion speed is fast, time-delay is little, effective;
(3) when special machine is in radio reception state or closed condition, receive early warning information after, switch to early warning voice broadcast state immediately, guarantee the timely report of early warning information, play the caution effect;
(4) communication protocol of the matching design Long-distance Control of receipts machine phonological component that can achieve a butt joint well.
1, RDS system principle
The fm band of RDS receiver is in 87.5～108.0MHz scope, and adjacent radio station wave band interval is 100kHz at least, loads the number of sub certificate on 57kHz.Data content comprises radio station type, program category, traffic announcements, advertising message, standard time, weather forecast etc., and the open type data interface is provided simultaneously, uses passage for the specific (special) requirements user provides data text.
2, RDS basic index
(1) subcarrier pilot tone: 57 ± 6kHz, to main carrier nominal frequency deviation ± 1.0～± 7.5kHz.
(2) modulator approach: PSK (phase shift keying).
(3) transfer of data bit rate: 1187.5b/s.
Through phase shift keying (PSK) demodulation, obtain the digital signal of 1187.5 ± 0.125b/s.
Receiver receives binary data stream, through reverse process, carries out decoding, and the decoding rule is identical with coding rule.
3, RDS receiver hardware principle
RDS receiver hardware mainly comprises microprocessor, tuner, phase-locked loop, power supply, power amplifier and loudspeaker etc., and wherein tuner is responsible for the receiver radio signals.
The RDS decoding receives the PSK data flow
Microprocessor is resolved the RDS data, controls the control of PLL phase-locked loop and volume simultaneously.
Can utilize external connection keyboard, also can utilize the I/O of CPU own to carry out keyboard scan, judgement is pressed and lifted to the realization keyboard, obtains button value.
The RDS receiver uses LCD or VFD display, shows radio station content, local time, RDS broadcast information etc.
4, the data parsing of RDS receiver
The data of RDS obtain binary data flow by phase shift keying, and the acceptance rate of data flow is 1187.5b/s, and data flow is continuous, and are uninterrupted.How recognition data flows, and the data format to RDS carries out labor below.
The Frame one of RDS has 15 types, 32 kinds of groups.
Each group (group) is made up of 4 pieces (block), is called A piece, B piece, C piece, DFNW, and each piece has 26,16 significance bits wherein, 10 bit check position+bits of offset.
The A piece comprises PI program sign indicating number (16), and A piece 10 is check code+offset word, and the A piece is the basis of seeking the RDS data head fast, and the PI sign indicating number is to have more particular locality, is divided by the EBU tissue.
The B piece comprises 4 group type codes, totally 16 kinds of A3～A0; B0 bit representation type version (0 expression A version; 1 expression B version), the TP sign is received the transport information announcement; PTY (5) represents program category.
C piece and D piece particular content have different arrangements with the group type is different.
Description of drawings
Accompanying drawing is a structured flowchart of the present invention.
Embodiment
Referring to accompanying drawing.
The present invention includes the core cell central control unit 2 that communication instruction is explained in order to handle, image data is also decoded, the various signals of control send; Be used to store the memory cell 5 of data; In order to receiving wireless frequency modulation signal and filtering and amplification, and carry out the RDS decoding, under the control of central control unit, store decoded information in the memory cell RDS information receiving module 1; The display floater LCD display 3 that shows in order to Word message with central control unit output; Convert voice in order to Word message with input, and with the literary composition language conversion chip 4 of voice output to power amplifier; Carry out power amplification and audio signal output power amplifier 6 in order to signal that will input to loud speaker 7; With loud speaker 7 in order to the broadcast language; And power module 8 in order to power supply to be provided.
RDS information receiving module 1 and 2 interactive connections of central control unit; The shows signal output of central control unit 2 is connected by data wire with the input of LCD display 3; The data output end of central control unit 2 is connected with the input of memory cell 5; The control signal output ends of central control unit 2 is connected with the input of literary composition language conversion chip 4; The output of memory cell 5 is connected with literary composition language conversion chip 4 inputs; The output of literary composition language conversion chip 4 is connected with power amplifier 6 inputs; The audio signal output end of RDS information receiving module 1 is connected with power amplifier 6 inputs; Power amplifier 6 outputs are connected with loud speaker 7 inputs.
The RDS information receiving module 1 of band RDS decoding function is delivered to central control unit 2 after receiving the RDS signal of radio broadcasting, central control unit 2 sends instruction the weather information in the memory cell 5 is transmitted to literary composition language conversion chip 4, the sound stream that literary composition language conversion chip 4 will be handled transfers to loud speaker 7 through power amplifier 6, realizes the conversion of literary composition language.Language after the conversion is reported with the mandarin of standard by power amplifier 6 and loud speaker 7.Central control unit 2 can be sent to display control signal LCD display 3 except that realizing voice broadcast, realization sound literal is exported synchronously.This receiver can receive radio broadcasting, has common MW-SW receiver function.Can also realize radio reception state and early warning voice broadcast state automatic switching function, when broadcast receiver is in the radio reception state,, switch to early warning voice broadcast state immediately if after receiving early warning information; When broadcast receiver is in closed condition,, also switch to early warning voice broadcast state immediately if after receiving early warning information.
Claims (3)
1, a kind of public emergent information receiver includes the core cell central control unit that communication instruction is explained in order to handle, image data is also decoded, the various signals of control send; Memory cell in order to the storage data; In order to carry out received signal, the decoding back is stored the information receiving module GSM information receiving module in the memory cell under the control of central control unit; The display floater LED display that shows in order to Word message with central control unit output; And in order to the power module of power supply to be provided;
Central control unit is connected with the GSM information receiving module is interactive; The shows signal output of central control unit is connected by data wire with the input of LED display; The data output end of central control unit is connected with the input of memory cell;
It is characterized in that described information receiving module in order to receive wireless frequency modulation signal and filtering and amplification, carry out the RDS decoding again, under the control of central control unit, store decoded information in the memory cell RDS information receiving module; The RDS information receiving module is connected with central control unit is interactive.
2, a kind of public emergent information receiver according to claim 1 is characterized in that also including: the literary composition language conversion chip that converts voice in order to the Word message with input to; Carry out power amplification in order to signal with input, and with the power amplifier of audio signal output to loud speaker; And in order to play the loud speaker of language;
The control signal output ends of central control unit is connected with the input of literary composition language conversion chip; The output of memory cell is connected with literary composition language conversion chip input; The output of literary composition language conversion chip is connected with the power amplifier input; The audio signal output end of RDS information receiving module is connected with the power amplifier input; The power amplifier output is connected with the loud speaker input.
3, a kind of public emergent information receiver according to claim 1 is characterized in that described display floater is a LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710024556 CN101075817A (en) | 2007-06-21 | 2007-06-21 | Public emergent information receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710024556 CN101075817A (en) | 2007-06-21 | 2007-06-21 | Public emergent information receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101075817A true CN101075817A (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710024556 Pending CN101075817A (en) | 2007-06-21 | 2007-06-21 | Public emergent information receiver |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977064A (en) * | 2010-11-16 | 2011-02-16 | 上海顾玮电子科技有限公司 | Emergency broadcasting receiver |
| CN102694613A (en) * | 2012-06-19 | 2012-09-26 | 深圳乐投卡尔科技有限公司 | Traffic information broadcasting device and method used in vehicle-mounted multimedia system |
| CN103036580A (en) * | 2011-10-10 | 2013-04-10 | 徐州超伟电子设备制造有限公司 | Emergency early-warning receiver capable of receiving and passing back information with binary channel |
| CN103489287A (en) * | 2012-06-12 | 2014-01-01 | 成都众山科技有限公司 | Wireless early-warning broadcasting host based on GSM technology |
| CN108233949A (en) * | 2016-12-12 | 2018-06-29 | 李向国 | One kind can avoid nominal frequencies section and realize the decoded method of RDS data receivers |
-
2007
- 2007-06-21 CN CN 200710024556 patent/CN101075817A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977064A (en) * | 2010-11-16 | 2011-02-16 | 上海顾玮电子科技有限公司 | Emergency broadcasting receiver |
| CN103036580A (en) * | 2011-10-10 | 2013-04-10 | 徐州超伟电子设备制造有限公司 | Emergency early-warning receiver capable of receiving and passing back information with binary channel |
| CN103489287A (en) * | 2012-06-12 | 2014-01-01 | 成都众山科技有限公司 | Wireless early-warning broadcasting host based on GSM technology |
| CN102694613A (en) * | 2012-06-19 | 2012-09-26 | 深圳乐投卡尔科技有限公司 | Traffic information broadcasting device and method used in vehicle-mounted multimedia system |
| CN108233949A (en) * | 2016-12-12 | 2018-06-29 | 李向国 | One kind can avoid nominal frequencies section and realize the decoded method of RDS data receivers |
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Open date: 20071121 |