CN205829623U - A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit - Google Patents
A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit Download PDFInfo
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- CN205829623U CN205829623U CN201620548070.5U CN201620548070U CN205829623U CN 205829623 U CN205829623 U CN 205829623U CN 201620548070 U CN201620548070 U CN 201620548070U CN 205829623 U CN205829623 U CN 205829623U
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- wireless receiving
- receiving
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Abstract
The utility model discloses a kind of highly sensitive wireless receiving for dual mode communication module and send amplifying circuit, including controller, connect on controller and have wireless chip, wireless chip connects has wireless transmission amplification module and wireless receiving low noise amplification module, wireless transmission amplification module and wireless receiving low noise amplification module to be connected to antenna.This utility model adds wireless transmission amplification module and highly sensitive wireless receiving low noise amplification module, after the radiofrequency signal that wireless chip exports is carried out power amplification, transmission to antenna through some transmission medium to receiver；Simultaneously, owing to it has higher receiving sensitivity, when transmission medium has the more weak wireless signal of this signal intensity, wireless receiving module also can receive demodulation to this signal normally, this utility model is effective, adds the communication distance of wireless signal, and signal receiving sensitivity is greatly improved, ensure that success rate and the reliability of radio communication, circuit design is simple, performance is high, low cost.
Description
Technical field
This utility model belongs to electric power signal transmission equipment technical field, relates to a kind of Gao Ling for dual mode communication module
Quick wireless receiving sends amplifying circuit.
Background technology
In existing centralized meter-reading system, widely used power carrier or micropower is wireless carries out data transmission, this with
In the communication system of single-mode transmission data, it is frequently present of the data transmission fails caused due to the impact of transmission environment.
In order to overcome employing single carrier wave or the defect of micropower wirelessly transmitting data, improve success rate of checking meter, in recent years, occur successively
Use carrier wave and the wireless dual mode communication technology combined.This kind of technology is based on carrier communication, and micropower is wireless is auxiliary, and two
Person coordinates mutually, automatically switches, and constitutes twin-channel solution, improves collection success rate to a certain extent and communicates in fact
Shi Xing.But, when reality is applied, within micropower wireless data transmission distance is generally about 500 meters (spacious environment).Due to
Practical communication environment also exists various interference source (such as city housing-group, hills and mountains mountain range, air humidity etc.), therefore, micropower without
The actually active transmission range of line data transmission just seems extremely limited；It addition, domestic existing major part bimodulus module is wireless
Receiving sensitivity is respectively less than or equal to-110dBm, it is just to cannot be carried out under the wireless signal strength occasion less than-110dBm
Normal open letter.
Summary of the invention
The technical problems to be solved in the utility model is: for the problems referred to above, proposes a kind of for dual mode communication module
Highly sensitive wireless receiving sends amplifying circuit, adds the communication distance of wireless signal, and signal receiving sensitivity is greatly improved, and protects
Having demonstrate,proved success rate and the reliability of radio communication, circuit design is simple, performance is high, low cost.
The technical scheme that this utility model is taked is: a kind of highly sensitive wireless receiving for dual mode communication module sends and puts
Big circuit, including controller, controller connects and has wireless chip, and wireless chip connects wireless transmission amplification module and wireless
Receiving low noise amplification module, wireless transmission amplification module and wireless receiving low noise amplification module are connected to antenna.
Preferably, above-mentioned antenna uses SMA communication interface.
Preferably, controller noted above is also associated with power module and carrier transmitting-receiving module, and carrier transmitting-receiving module is connected to defeated
Electric wire.
Preferably, controller noted above uses STM32F chip.
The beneficial effects of the utility model: compared with prior art, add wireless transmission and amplify mould in this utility model
Block and highly sensitive wireless receiving low noise amplification module, after the radiofrequency signal that wireless chip exports is carried out power amplification, pass
Transport to antenna through some transmission medium to receiver；Simultaneously as it has higher receiving sensitivity, when transmission medium has
During the more weak wireless signal of this signal intensity, wireless receiving module also can receive demodulation, this practicality to this signal normally
The novel communication distance being effectively increased wireless signal, signal receiving sensitivity is greatly improved, it is ensured that the one-tenth of radio communication
Power and reliability, circuit design is simple, performance is high, low cost.
Accompanying drawing explanation
Fig. 1 is catenation principle schematic diagram of the present utility model.
Detailed description of the invention
As it is shown in figure 1, a kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit, including controlling
Device, controller connects and has wireless chip, and wireless chip connects has wireless transmission amplification module and wireless receiving low noise to amplify mould
Block, wireless transmission amplification module and wireless receiving low noise amplification module are connected to antenna.
Wireless transmission amplifies (PA) circuit: after data to be sent are processed by main control chip, is transmitted extremely by this signal
RF chip, then by RF chip to a series of process such as this signal are modulated, afterwards the transmission of this signal is amplified to wireless transmission
(PA) circuit carries out power amplification, the most again in external antenna is radiated propagation medium.This main circuit to be put by power
Big pipe (2SK3756) and high accuracy inductance, capacitance resistance ware are constituted, and it is 500mW that its effective conduction test launches power.
Wireless receiving low noise amplifies (LNA) circuit: when there is the wireless signal of corresponding frequencies in air dielectric, this signal
Can be transferred to the wireless receiving low noise within device by external antenna and amplify (LNA) circuit part, this circuit will be to this signal
Carry out transmitting after a series of filtering and low noise amplification process to RF and being demodulated.This main circuit will be by audion (2SC4226
(R24)) constituting with high accuracy inductance, capacitance resistance ware, its effective conduction test receiving sensitivity is-115dBm.
Preferably, above-mentioned antenna uses SMA communication interface.
Preferably, controller noted above is also associated with power module and carrier transmitting-receiving module, and carrier transmitting-receiving module is connected to defeated
Electric wire.
Preferably, controller noted above uses STM32F chip.
When device carries out wireless data transmission, data to be sent are modulated into frequency range and are by wireless chip
The GFSK radiofrequency signal of 470MHz to 510MHz, then this signal enters amplifying (PA) circuit by the wireless transmission within device
After row power amplification, this signal amplitude, to antenna, is finally mapped in transmission medium by transmission by antenna；When device carries out wireless number
According to when receiving, by the effective wireless signal in antenna perception transmission medium, and the transmission of this signal is amplified to wireless receiving low noise
(LNA) circuit, wireless receiving LNA (LNA) circuit transmits to RF core after this signal is carried out High frequency filter and low noise amplification
Sheet, then by RF chip, this signal is demodulated the relevant treatment such as output accordingly.
Advantage of the present utility model is as follows: (1) can identify the frequency of wireless signal automatically；(2) signal waveform of receiving terminal
Undistorted, and amplitude substantially constant；(3) effective transmitting range more than 1000 meters；(4) the highest receiving sensitivity is-115dBm.
Carrier communication transceiver module: when electric lines of force exists carrier signal, carrier wave receives and will receive with transtation mission circuit
Signal is demodulated after carrying out narrow-band filtering and amplitude limiting processing, and directly transmits a signal to controller, and controller is adopted by ADC
Sample obtains data and processes accordingly；When needs send data, data to be sent are used the side of BFSK by controller
Being sent to carrier wave after formula modulation receive and transtation mission circuit, carrier wave receives after being amplified by this signal with transtation mission circuit and is coupled in electrical network
Go.
This utility model circuit design is simple, performance is high, has preferable concordance, and its wireless signal transmission distance exists
More than 1000 meters, and have higher wireless receiving sensitivity, in actual applications, can be in various Complex Power environment
Equipment fully covers and UNICOM, compares the wireless communication distance in existing wireless double mode technology and directly improves 2 times, simultaneously
Employing multifrequency point designs, it is ensured that neighbouring wireless networks communication is interference-free, is effectively improved the real-time communication of radio communication
Effect.
Claims (4)
1. the highly sensitive wireless receiving for dual mode communication module sends amplifying circuit, it is characterised in that: include controller,
Connecting on controller and have wireless chip, wireless chip connects wireless transmission amplification module and wireless receiving low noise amplification module,
Wireless transmission amplification module and wireless receiving low noise amplification module are connected to antenna.
A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit, and it is special
Levy and be: antenna uses SMA communication interface.
A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit, and it is special
Levying and be: controller is also associated with power module and carrier transmitting-receiving module, carrier transmitting-receiving module is connected to power transmission line.
A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit, and it is special
Levy and be: controller uses STM32F chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548070.5U CN205829623U (en) | 2016-06-07 | 2016-06-07 | A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548070.5U CN205829623U (en) | 2016-06-07 | 2016-06-07 | A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205829623U true CN205829623U (en) | 2016-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620548070.5U Active CN205829623U (en) | 2016-06-07 | 2016-06-07 | A kind of highly sensitive wireless receiving for dual mode communication module sends amplifying circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205829623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU175887U1 (en) * | 2017-07-25 | 2017-12-21 | Акционерное общество "Государственный Рязанский приборный завод" | Transmitting device |
| CN110289919A (en) * | 2019-07-02 | 2019-09-27 | 西安易朴通讯技术有限公司 | Signal ensures processing method, device, equipment and storage medium |
-
2016
- 2016-06-07 CN CN201620548070.5U patent/CN205829623U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU175887U1 (en) * | 2017-07-25 | 2017-12-21 | Акционерное общество "Государственный Рязанский приборный завод" | Transmitting device |
| CN110289919A (en) * | 2019-07-02 | 2019-09-27 | 西安易朴通讯技术有限公司 | Signal ensures processing method, device, equipment and storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |