CN201774517U - Intelligent high-sensitivity receiver circuit - Google Patents
Intelligent high-sensitivity receiver circuit Download PDFInfo
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- CN201774517U CN201774517U CN2010201025215U CN201020102521U CN201774517U CN 201774517 U CN201774517 U CN 201774517U CN 2010201025215 U CN2010201025215 U CN 2010201025215U CN 201020102521 U CN201020102521 U CN 201020102521U CN 201774517 U CN201774517 U CN 201774517U
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Abstract
The utility model discloses an intelligent high-sensitivity receiver circuit, which can intelligently judge the intensity of an external wireless signal so as to automatically adjust receiving sensitivity. The circuit comprises a central control module, and an input and output module, a frequency adjusting module, an audio frequency input module and an audio frequency output module which are connected to the central control module, wherein the power supply module supplies power to each module; an intercom circuit comprises a receiving sensitivity control module and a high-frequency amplifier gain adjusting module; the receiving sensitivity control module comprises a microprogrammed control unit (MCU) and a wireless signal field intensity detection module; the wireless signal field intensity detection module outputs a field intensity signal to the MCU; the MCU outputs a control signal to the high-frequency amplifier gain adjusting module of a receiver; and the high-frequency amplifier gain adjusting module is connected between the central control module and the audio frequency output module. Gain of a high-frequency amplifier can be adjusted intelligently and automatically by detecting the field intensity of a wireless signal in an external environment, so that a telecom has a longer conversation distance and a good communication effect.
Description
Technical field
The utility model discloses a kind of intercom circuit, but particularly a kind of intelligent decision external wireless signals intensity, with the intelligent highly sensitive receiver circuit of automatic adjusting receiving sensitivity.
Background technology
Intercom is easy to use, cheap with it, the conversation low cost and other advantages widely people known, and in the extensive use of every profession and trade field.The speech range and the receiving sensitivity of intercom have direct relation, and the receiving sensitivity of intercom just is fixed up after debugging through the development phase usually, and just the communication distance of intercom is fixed, and can not change with environmental change.
Summary of the invention
Fix at the above-mentioned intercom receiving sensitivity of mentioning of the prior art, the shortcoming that communication distance is relatively poor, the utility model provides a kind of new intercom circuit, in the intercom circuit, be provided with the receiving sensitivity control module, receiving sensitivity control module structure is that wireless signal field detects module output field intensity signal to MCU, MCU is connected with memory by data-interface, MCU detects the next field intensity signal output control signal of module transmission according to wireless signal field and gives receiver high-frequency amplifier gain adjustment module, determine concrete high-frequency amplifier gain, to reach the purpose of Based Intelligent Control receiving sensitivity.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of intelligent high sensitive receiver circuit, comprise central control module and the input/output module that is connected on the central control module, frequency adjustment module, the radiofrequency signal input module, the radiofrequency signal output module, amplification module is connected between radiofrequency signal input module and the radiofrequency signal output module, power module is given each module for power supply, receiver circuit also comprises receiving sensitivity control module and high-frequency amplifier gain adjustment module, the receiving sensitivity control module comprises MCU and wireless signal field detection module, wireless signal field detection module output field intensity signal is given MCU, MCU output control signal is given receiver high-frequency amplifier gain adjustment module, and the high-frequency amplifier gain adjustment module is connected between amplification module and the radiofrequency signal output module.
The technical scheme that its technical problem that solves the utility model adopts further comprises:
Be connected with memory on the data-interface of described MCU.
Described wireless signal field detection module is connected with the A/D interface of MCU.
Described wireless signal field detection module output field intensity signal is given the A/D modular converter, and A/D modular converter output digital signal is given the data-interface of MCU, and MCU exports control signal.
Described high-frequency amplifier gain adjustment module comprises capacitive branch and the amplifier branch road that is connected in parallel, capacitive branch comprises diode in series D1, capacitor C 1 and diode D2, the positive pole of diode D1 and diode D2 is connected with the two ends of capacitor C 1 respectively, the amplifier branch road comprises diode D3, radio frequency amplifier IC2 and diode D4, the positive pole of diode D3 is connected with radio frequency amplifier IC2 input, the positive pole of diode D4 is connected with radio frequency amplifier IC2 output, first output of MCU is connected with the positive pole of diode D1 by resistance R 1 respectively, be connected by the positive pole of resistance R 2 with diode D2, second output of MCU is connected with the positive pole of diode D3 by resistance R 5 respectively, is connected by the positive pole of resistance R 6 with diode D4.
Described high-frequency amplifier gain adjustment module front-end and back-end are connected with filter unit respectively.
Described filter unit is a capacitance-resistance filter, comprises the electric capacity that is connected in the circuit and the resistance of ground connection.
The beneficial effects of the utility model are: the utility model provides a kind of new intercom circuit, can make intercom that better speech range and communication effect be arranged by detecting the next intelligent automatic regulated high-frequency amplifier gain of wireless signal field in the external environment condition.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Receiver gain control module circuit theory frame structure schematic diagram in the intercom circuit in Fig. 1 the utility model.
Embodiment
Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.
The utility model is the improvement to existing intercom, existing intercom circuit comprises central control module, input/output module, frequency adjustment module, the radiofrequency signal input module, the radiofrequency signal output module, input module is connected with data-interface on the central control module, amplification module is connected between radiofrequency signal input module and the radiofrequency signal output module, be used to amplify radiofrequency signal, the radiofrequency signal input module, the radiofrequency signal output module is connected with data-interface on the central control module, the input and output of voice messaging when being used to converse, power module is given each module for power supply in the intercom, above-mentioned each intercom is formed module and is adopted intercom module of the prior art to get final product, the utility model has additional receiving sensitivity control module and receiver high-frequency amplifier gain adjustment module in the intercom circuit, be used for the high-frequency amplifier gain controlling to intercom.
Please referring to accompanying drawing 1, the utility model has been set up a high-frequency amplifier adjustment module and a receiving sensitivity control module in the intercom circuit, the core of receiving sensitivity control module is a MCU chip IC 7, in the present embodiment, it is M30620 type single-chip microcomputer that MCU chip IC 7 is selected model for use, during concrete enforcement, also can adopt other models or other Series chip.Be connected with storage chip IC8 on the data-interface of MCU chip IC 7, storage chip IC8 stored information such as the high-frequency amplifier gain situation of intercom, channel conditions, promptly be that intercom is when being operated in each communication channel, wireless signal field intensity is corresponding to the high-frequency amplifier gain relationship, in the present embodiment, it is the eeprom memory of 24LC256 that storage chip IC8 adopts model, when specifically implementing, also can select for use other model storage chips to replace.MCU chip IC 7 data terminals are connected with wireless signal field and detect module, current communication channel wireless signal field intensity are provided for MCU chip IC 7.MCU chip IC 7 output control signals are given the high-frequency amplifier adjustment module, carry out the high-frequency amplifier gain-adjusted.In the present embodiment, the high-frequency amplifier gain adjustment module comprises capacitive branch and the amplifier branch road that is connected in parallel, capacitive branch comprises diode in series D1, capacitor C 1 and diode D2, the positive pole of diode D1 and diode D2 is connected with the two ends of capacitor C 1 respectively, the amplifier branch road comprises diode D3, radio frequency amplifier IC2 and diode D4, the positive pole of diode D3 is connected with radio frequency amplifier IC2 input, the positive pole of diode D4 is connected with radio frequency amplifier IC2 output, first output of MCU chip IC 7 is connected with the positive pole of diode D1 by resistance R 1 respectively, be connected by the positive pole of resistance R 2 with diode D2, second output of MCU chip IC 7 is connected with the positive pole of diode D3 by resistance R 5 respectively, is connected by the positive pole of resistance R 6 with diode D4.High-frequency amplifier gain adjustment module front-end and back-end are connected with filter unit respectively, in the present embodiment, the filter unit of high-frequency amplifier gain adjustment module front end is a capacitance-resistance filter, comprises that the capacitor C 2 that is connected in the circuit loop is connected other end ground connection with resistance R 3 one ends with circuit loop; The filter unit of high-frequency amplifier gain adjustment module rear end is a capacitance-resistance filter, comprises that the capacitor C 3 that is connected in the circuit loop is connected other end ground connection with resistance R 4 one ends with circuit loop.
The utility model in use, detect module by wireless signal field and detect current communication channel wireless signal field intensity in real time, the A/D mouth of its field intensity intensity by MCU chip IC 7 offers MCU chip IC 7 and judges, or input to MCU chip IC 7 after changing by a special A/D modular converter and judge, MCU chip IC 7 read the field intensity strength signal and with the high-frequency amplifier gain situation that is stored in the storage chip IC8, information such as channel conditions compare, intelligence is determined the high-frequency amplifier gain, and control signal exported to receiver high-frequency amplifier gain-adjusted module, carry out the high-frequency amplifier gain-adjusted.The effect of high-frequency amplifier gain adjustment module is the gain of regulating receiver, concrete control is as follows: when MCU chip IC 7 detects the signal of antenna when very weak, MCU chip IC 7 control diode D3, diode D4 work, make radiofrequency signal come radio frequency amplifier IC2, amplify through the gain that 10dB is arranged behind the radio frequency amplifier IC2 approximately; When MCU chip IC 7 detects the signal of antenna when more intense, MCU chip IC 7 control diode D1, diode D2 work make radiofrequency signal through capacitor C 1 output, and this moment, common anti-interference index can be more better.Simple declaration is exactly that MCU chip IC 7 detects the aerial signal size, and control the work of diode D1, diode D2, diode D3 and diode D4 with this, the gain of receiver control indirectly, receiving sensitivity was very high when the realization signal was weak, and signal is closed the one-level amplifier when strong, guarantee the anti-interference index of receiver,, realize the purpose of intelligent high receiving sensitivity to reach the suitable receiver gain of the concrete setting of channel field intensity intensity according to reality.
The utility model can be widely used in the various intercoms of the prior art, realizes the suitable receiver gain of the concrete setting of channel field intensity intensity according to reality, reaches the purpose of intelligent high receiving sensitivity, improves the intercom communication distance.
Claims (7)
1. intelligent high sensitive receiver circuit, comprise central control module and the input/output module that is connected on the central control module, frequency adjustment module, the radiofrequency signal input module, the radiofrequency signal output module, amplification module is connected between radiofrequency signal input module and the radiofrequency signal output module, power module is given each module for power supply, it is characterized in that: described receiver circuit also comprises receiving sensitivity control module and high-frequency amplifier gain adjustment module, the receiving sensitivity control module comprises MCU and wireless signal field detection module, wireless signal field detection module output field intensity signal is given MCU, MCU output control signal is given the high-frequency amplifier gain adjustment module, and the high-frequency amplifier gain adjustment module is connected between amplification module and the radiofrequency signal output module.
2. intelligent high sensitive receiver circuit according to claim 1 is characterized in that: be connected with memory on the data-interface of described MCU.
3. intelligent high sensitive receiver circuit according to claim 1 is characterized in that: described wireless signal field detection module is connected with the A/D interface of MCU.
4. intelligent high sensitive receiver circuit according to claim 1, it is characterized in that: described wireless signal field detection module output field intensity signal is given the A/D modular converter, A/D modular converter output digital signal is given the data-interface of MCU, and MCU exports control signal.
5. according to any described intelligent high sensitive receiver circuit in the claim 1 to 4, it is characterized in that: described high-frequency amplifier gain adjustment module comprises capacitive branch and the amplifier branch road that is connected in parallel, capacitive branch comprises diode in series D1, capacitor C 1 and diode D2, the positive pole of diode D1 and diode D2 is connected with the two ends of capacitor C 1 respectively, the amplifier branch road comprises diode D3, radio frequency amplifier IC2 and diode D4, the positive pole of diode D3 is connected with radio frequency amplifier IC2 input, the positive pole of diode D4 is connected with radio frequency amplifier IC2 output, first output of MCU is connected with the positive pole of diode D1 by resistance R 1 respectively, be connected by the positive pole of resistance R 2 with diode D2, second output of MCU is connected with the positive pole of diode D3 by resistance R 5 respectively, is connected by the positive pole of resistance R 6 with diode D4.
6. according to any described intelligent high sensitive receiver circuit in the claim 1 to 4, it is characterized in that: described high-frequency amplifier gain adjustment module front-end and back-end are connected with filter unit respectively.
7. intelligent high sensitive receiver circuit according to claim 6, it is characterized in that: described filter unit is a capacitance-resistance filter, comprises the electric capacity that is connected in the circuit and the resistance of ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201025215U CN201774517U (en) | 2010-01-26 | 2010-01-26 | Intelligent high-sensitivity receiver circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201025215U CN201774517U (en) | 2010-01-26 | 2010-01-26 | Intelligent high-sensitivity receiver circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201774517U true CN201774517U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201025215U Expired - Fee Related CN201774517U (en) | 2010-01-26 | 2010-01-26 | Intelligent high-sensitivity receiver circuit |
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| CN (1) | CN201774517U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780005A (en) * | 2015-05-07 | 2015-07-15 | 泉州欧讯电子有限公司 | Broadband frequency test circuit of interphone and control method for broadband frequency test circuit |
| CN106059866A (en) * | 2016-07-01 | 2016-10-26 | 芜湖宝瓶智能化服务外包有限公司 | Voice control system for wireless smart home |
-
2010
- 2010-01-26 CN CN2010201025215U patent/CN201774517U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780005A (en) * | 2015-05-07 | 2015-07-15 | 泉州欧讯电子有限公司 | Broadband frequency test circuit of interphone and control method for broadband frequency test circuit |
| CN104780005B (en) * | 2015-05-07 | 2017-06-27 | 泉州欧讯电子有限公司 | The wideband frequency test circuit and the control method of the circuit of intercom |
| CN106059866A (en) * | 2016-07-01 | 2016-10-26 | 芜湖宝瓶智能化服务外包有限公司 | Voice control system for wireless smart home |
| CN106059866B (en) * | 2016-07-01 | 2019-09-17 | 深圳詺月智能科技有限公司 | A kind of speech control system of wireless intelligent house |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KIRISUN COMMUNICATION CO., LTD. Free format text: FORMER NAME: KIRISUN ELECTRONICS (SHENZHEN) CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District Song Ping Shan Qi Min Road No. 1 building 5-6 Betel Patentee after: Kirisun Communication Co., Ltd. Address before: 6 building H-2, building 518000, Dong Cheng Industrial Zone, overseas Chinese, Shenzhen, Nanshan District, Guangdong Patentee before: Kirisun Electronics (Shenzhen) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |