CN201813364U - Ship platform deck frequency modulation interphone circuit - Google Patents
Ship platform deck frequency modulation interphone circuit Download PDFInfo
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- CN201813364U CN201813364U CN2010202509988U CN201020250998U CN201813364U CN 201813364 U CN201813364 U CN 201813364U CN 2010202509988 U CN2010202509988 U CN 2010202509988U CN 201020250998 U CN201020250998 U CN 201020250998U CN 201813364 U CN201813364 U CN 201813364U
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Abstract
The utility model relates to a wireless radio frequency circuit, in particular to an electric circuit for a shipborne wireless frequency modulation interphone. The ship platform deck frequency modulation interphone circuit comprises a circuit of a transmitting part and a circuit of a receiving part. The circuit of a transmitting part is used for transmitting a voice signal input by a microphone into a voice frequency filter and a pre-emphasis module to process through automatic gain control (AGC), amplifying and limiting the amplitude of the voice signal at a voice amplifying circuit, controlling the voice signal by means of frequency deviation by a digital/analog (D/A) converter, directly modulating the frequency of the voice signal by a voltage controlled oscillator (VCO) unit, and transmitting the voice signal by an antenna; and the circuit of a receiving part is used for amplifying a signal input from the antenna by means of radio frequency by a receiving-transmitting converting circuit and a band-pass filter, processing a signal in an intermediate frequency processing chip by means of band-pass filtering, frequency mixing and crystal filtering, amplifying and discriminating the frequency of the signal after remixing frequency and ceramic filtering, generating a voice frequency signal and a signaling encoding signal, and correspondingly processing the signals. The ship platform deck frequency modulation interphone circuit not only has the advantages of the common ship platform deck interphone, but also has certain unique functions and circuits.
Description
Technical field
The utility model relates to wireless radio frequency circuit, relates in particular to the electronic circuit of the wireless frequency modulation intercom that is used for boat-carrying.
Background technology
The boat-carrying intercom is widely used in the urban transportation system, has had the boat-carrying talkback system will make things convenient for getting in touch of ship and control tower greatly, helps improving navigation safety.Existing boat-carrying is to improve on the basis of general intercoms such as vehicle-mounted intercom, and often transmitting power deficiency, and intercom function is simple, and the speech talkback function only is provided, and intelligence and diversity inadequately on the function can not satisfy the autgmentability demand of practical application.
The utility model content
Therefore, the utility model proposes a kind of have high-power output, good transmitting-receiving performance and the boat-carrying platform wireless frequency modulation intercom circuit of power.It has some unique function and circuit in addition except the characteristics with many common boat-carrying platform intercoms.
The utility model adopts following technical scheme:
Boat-carrying platform frequency modulation intercom circuit of the present utility model comprises the circuit of radiating portion and the circuit of receiving unit.Wherein,
The circuit of radiating portion is the Gain Automatic controller of voice signal process process AGC of microphone input, deliver to tone filter and the preemphasis module is carried out filtering to speech, preemphasis is handled, amplify amplitude limit on words discharge road then, control through the D/A converter frequency deviation, enter the VCO unit from the MOD of VCO unit modulation terminal again and carry out direct frequency modulated, and the CTCSS that the CPU control unit produces, DTCSS, 2TONE, the dtmf signaling coding mixes at the SUM synthesizer with the voice signal that above-mentioned words discharge road is sent sends into the VCO cells modulate, then described VCO unit and phase locked-loop unit produce the radio-frequency carrier signal of emission, amplify through buffering, excitation is amplified, power model, produce specified radio-frequency power, through duplexer and low pass filter, suppress harmonic components, launch by antenna then;
The circuit of receiving unit is to carry out radio frequency to amplify behind the signal process transmitting-receiving change-over circuit of antenna input and band pass filter, after passing through another band-pass filter again, enter first frequency mixer, in first frequency mixer, will from the amplifying signal of radio frequency with from the first local oscillation signal mixing of phase locked-loop unit and generate first intermediate-freuqncy signal, first intermediate-freuqncy signal is further eliminated the noise signal of neighboring trace by crystal filter, filtered first intermediate-freuqncy signal enters the intermediate frequency process chip, with second local oscillation signal that obtains through benchmark crystal resonator 3 frequencys multiplication once more mixing generate second intermediate-freuqncy signal, after second intermediate-freuqncy signal is passed through two useless spurious signals of ceramic filter filtering, be exaggerated and frequency discrimination, produce audio signal H and signalling coding signal, audio signal is by described tone filter and preemphasis resume module, entering volume control circuit and audio-frequency power amplifier amplifies, drive loud speaker, and CTCSS, DTCSS, the 2TONE signalling coding is through low pass filter, dtmf signal is by sending into above-mentioned CPU control unit decoding identification after the decoding, the part of audio signal is carried out the detection rectification by filter and amplifier to its noise component(s), produce one and the corresponding direct voltage of noise component(s), and the analog port of delivering to above-mentioned CPU control unit and the magnitude of voltage that sets in advance size relatively, open or close output according to comparative result by the electronic switch control loudspeaker that connects.
Further, described tone filter and preemphasis module are respectively BA10358 chip and BA10324 chip.
Further, described D/A converter is the M62363FP chip.
Further, described CPU control unit comprises reset circuit, eeprom memory, LCD driver module, keyboard drive module, monitoring temperature module and the power supply high voltage protective module that is connected on the microcontroller chip.
Further, described crystal filter is the crystal filter of 49.95MHZ.
Further, described intermediate frequency process chip is the TA31136 chip.
Boat-carrying platform wireless frequency modulation intercom circuit of the present utility model has high-power output, good transmitting-receiving performance and power, and it has some unique function and circuit in addition except the characteristics with many common vehicle-mounted intercoms.For example: have 200 memory channels and CALL channel, memory channel grouping management function; Has multiple easy-to-use, high efficiency scanning pattern selectable punction; Has the CTCSS/DCS signaling capability; Have support computer write frequently, from the platform programing function; Have and with frequency, alien frequencies, scramble function of use to be set; Have frequency interval and can select (wide, arrowband switches) function; Have supply voltage and exceed the allowed band automatic shutoff protective functions; Large scale display, high brightness backlights; Hand miaow function key is able to programme.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
Consult shown in Figure 1ly, boat-carrying platform frequency modulation intercom circuit of the present utility model comprises the circuit of radiating portion and the circuit of receiving unit.Wherein,
The circuit of radiating portion is the Gain Automatic controller 101 of voice signal process process AGC of microphone input, deliver to 102 pairs of speeches of tone filter and preemphasis module and carry out filtering, preemphasis is handled, wherein, tone filter and preemphasis module 102 are to adopt BA10358 chip and BA10324 chip, amplify amplitude limit on words discharge road then, D/A converter 103 frequency deviations control through the M62363FP chip, enter VCO unit 104 from the MOD of VCO unit 104 modulation terminal again and carry out direct frequency modulated, and the CTCSS that CPU control unit 105 produces, DTCSS, 2TONE, the dtmf signaling coding mixes at the SUM synthesizer with the voice signal that above-mentioned words discharge road is sent sends into 104 modulation of VCO unit, then described VCO unit 104 and phase locked-loop unit 106 produce the radio-frequency carrier signal of emission, amplify through buffering, excitation is amplified, power model, produce specified radio-frequency power, through duplexer and low pass filter, suppress harmonic components, launch by antenna then;
The circuit of receiving unit adopts the double superheterodyne mode, after receiving and dispatching change-over circuit and band pass filter, carry out the radio frequency amplification from the signal of antenna input, after passing through another band pass filter 107 filtering again, enter first frequency mixer 108, in first frequency mixer 108, will from the amplifying signal of radio frequency with from the first local oscillation signal mixing of phase locked-loop unit 106 and generate first intermediate-freuqncy signal, first intermediate-freuqncy signal is further eliminated the noise signal of neighboring trace by the crystal filter 109 of 49.95MHZ, filtered first intermediate-freuqncy signal enters the intermediate frequency process chip 110 of TA31136 chip, with second local oscillation signal that obtains through benchmark crystal resonator 111 frequency triplings once more mixing generate second intermediate-freuqncy signal, after second intermediate-freuqncy signal is passed through two useless spurious signals of ceramic filter filtering, be exaggerated and frequency discrimination, produce audio signal H and signalling coding signal, audio signal is handled by the tone filter of BA10358 chip with the preemphasis module 102 of BA10324 chip, entering volume control circuit and audio-frequency power amplifier amplifies, drive loud speaker, and CTCSS, DTCSS, the 2TONE signalling coding is through low pass filter, dtmf signal is by sending into the 105 decoding identifications of above-mentioned CPU control unit after the decoding, the part of audio signal is carried out the detection rectification by filter and amplifier to its noise component(s), produce one and the corresponding direct voltage of noise component(s), and the analog port of delivering to above-mentioned CPU control unit 105 and the magnitude of voltage that sets in advance size relatively, open or close output according to comparative result by the electronic switch control loudspeaker that connects.
Aforesaid CPU control unit 105 comprises reset circuit, eeprom memory, LCD driver module, keyboard drive module, monitoring temperature module and the power supply high voltage protective module that is connected on the microcontroller chip.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.
Claims (6)
1. a boat-carrying platform frequency modulation intercom circuit comprises the circuit of radiating portion and the circuit of receiving unit, it is characterized in that:
The circuit of radiating portion is the voice signal process process Gain Automatic controller of AGC (101) of microphone input, deliver to tone filter and preemphasis module (102) is carried out filtering to speech, preemphasis is handled, amplify amplitude limit on words discharge road then, control through D/A converter (103) frequency deviation, enter VCO unit (104) from the MOD of VCO unit (104) modulation terminal again and carry out direct frequency modulated, and the CTCSS that CPU control unit (105) produces, DTCSS, 2TONE, the dtmf signaling coding mixes at the SUM synthesizer with the voice signal that above-mentioned words discharge road is sent sends into VCO unit (104) modulation, then described VCO unit (104) and phase locked-loop unit (106) produce the radio-frequency carrier signal of emission, amplify through buffering, excitation is amplified, power model, produce specified radio-frequency power, through duplexer and low pass filter, suppress harmonic components, launch by antenna then;
The circuit of receiving unit is to carry out radio frequency to amplify behind the signal process transmitting-receiving change-over circuit of antenna input and band pass filter, after passing through another band pass filter (107) filtering again, enter first frequency mixer (108), in first frequency mixer (108), will from the amplifying signal of radio frequency with from the first local oscillation signal mixing of phase locked-loop unit (106) and generate first intermediate-freuqncy signal, first intermediate-freuqncy signal is further eliminated the noise signal of neighboring trace by crystal filter (109), filtered first intermediate-freuqncy signal enters intermediate frequency process chip (110), with second local oscillation signal that obtains through benchmark crystal resonator (111) 3 frequencys multiplication once more mixing generate second intermediate-freuqncy signal, after second intermediate-freuqncy signal is passed through two useless spurious signals of ceramic filter filtering, be exaggerated and frequency discrimination, produce audio signal H and signalling coding signal, audio signal is handled by described tone filter and preemphasis module (102), entering volume control circuit and audio-frequency power amplifier amplifies, drive loud speaker, and CTCSS, DTCSS, the 2TONE signalling coding is through low pass filter, dtmf signal is by sending into above-mentioned CPU control unit (105) decoding identification after the decoding, the part of audio signal is carried out the detection rectification by filter and amplifier to its noise component(s), produce one and the corresponding direct voltage of noise component(s), and the analog port of delivering to above-mentioned CPU control unit (105) and the magnitude of voltage that sets in advance size relatively, open or close output according to comparative result by the electronic switch control loudspeaker that connects.
2. boat-carrying platform frequency modulation intercom circuit according to claim 1, it is characterized in that: described tone filter and preemphasis module (102) are respectively BA10358 chip and BA10324 chip.
3. boat-carrying platform frequency modulation intercom circuit according to claim 1, it is characterized in that: described D/A converter (103) is the M62363FP chip.
4. boat-carrying platform frequency modulation intercom circuit according to claim 1 is characterized in that: described CPU control unit (105) comprises reset circuit, eeprom memory, LCD driver module, keyboard drive module, monitoring temperature module and the power supply high voltage protective module that is connected on the microcontroller chip.
5. boat-carrying platform frequency modulation intercom circuit according to claim 1, it is characterized in that: described crystal filter (109) is the crystal filter of 49.95MHZ.
6. boat-carrying platform frequency modulation intercom circuit according to claim 1, it is characterized in that: described intermediate frequency process chip (110) is the TA31136 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202509988U CN201813364U (en) | 2010-07-01 | 2010-07-01 | Ship platform deck frequency modulation interphone circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202509988U CN201813364U (en) | 2010-07-01 | 2010-07-01 | Ship platform deck frequency modulation interphone circuit |
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| Publication Number | Publication Date |
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| CN201813364U true CN201813364U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202509988U Expired - Fee Related CN201813364U (en) | 2010-07-01 | 2010-07-01 | Ship platform deck frequency modulation interphone circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801438A (en) * | 2012-07-11 | 2012-11-28 | 深圳九洲海全通科技股份有限公司 | Handheld type wireless maritime affair interphone |
| CN103043190A (en) * | 2012-12-24 | 2013-04-17 | 苏州益童游乐设备有限公司 | Bumper boat with interphone function |
| CN105406887A (en) * | 2015-12-17 | 2016-03-16 | 成都航天通信设备有限责任公司 | Maritime radio station having data transmission function |
| CN107294554A (en) * | 2017-07-28 | 2017-10-24 | 泉州市琪祥电子科技有限公司 | A kind of single-frequency Vehicular intercom |
| CN111371469A (en) * | 2020-06-01 | 2020-07-03 | 杭州勒格智能设备有限公司 | Audio distortion processing device and method for wireless interphone transmission |
-
2010
- 2010-07-01 CN CN2010202509988U patent/CN201813364U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801438A (en) * | 2012-07-11 | 2012-11-28 | 深圳九洲海全通科技股份有限公司 | Handheld type wireless maritime affair interphone |
| CN102801438B (en) * | 2012-07-11 | 2014-06-25 | 深圳九洲海全通科技股份有限公司 | Handheld type wireless maritime affair interphone |
| CN103043190A (en) * | 2012-12-24 | 2013-04-17 | 苏州益童游乐设备有限公司 | Bumper boat with interphone function |
| CN105406887A (en) * | 2015-12-17 | 2016-03-16 | 成都航天通信设备有限责任公司 | Maritime radio station having data transmission function |
| CN107294554A (en) * | 2017-07-28 | 2017-10-24 | 泉州市琪祥电子科技有限公司 | A kind of single-frequency Vehicular intercom |
| CN107294554B (en) * | 2017-07-28 | 2023-09-12 | 泉州市琪祥电子科技有限公司 | Single-frequency vehicle-mounted interphone |
| CN111371469A (en) * | 2020-06-01 | 2020-07-03 | 杭州勒格智能设备有限公司 | Audio distortion processing device and method for wireless interphone transmission |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110427 Termination date: 20130701 |