CN105007127A - Level shift driving power detection radio frequency module for smart home - Google Patents
Level shift driving power detection radio frequency module for smart home Download PDFInfo
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- CN105007127A CN105007127A CN201510402798.7A CN201510402798A CN105007127A CN 105007127 A CN105007127 A CN 105007127A CN 201510402798 A CN201510402798 A CN 201510402798A CN 105007127 A CN105007127 A CN 105007127A
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Abstract
The invention discloses to a level shift driving power detection radio frequency module for a smart home, relating to the field of radio frequency modules and solving a problem of working control of the radio frequency module. The interference current and the temperature drift can be effectively avoided through a level shift driving differential control signal, and a control effect is accurate. The level shift driving power detection radio frequency module comprises an antenna matching circuit, a directional coupler, a balun circuit, a power detection circuit, a power circuit, a voltage conversion circuit, a processing chip and a level shift driving circuit, wherein a signal of the antenna matching circuit is divided into two ways through the directional coupler, one way is converted to a one-way signal to a power detection signal circuit through the balun circuit, a detection signal is transmitted to the processing chip, and the working condition of the radio frequency module is determined according to a voltage worksheet in a storage of the processing chip to enable a user to know the current working condition of equipment, so that an amplifier and other accessory equipment in the module can be prevented from overloading, the service life of the radio frequency module is prolonged, and the faulty operation to radio frequency equipment is prevented.
Description
Technical field
The present invention relates to radio-frequency module field, be specifically related to the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption.
Background technology
Radio-frequency module is widely used in Internet of Things field, especially in intelligent home device field.Radio-frequency module is employed all in a large number in wireless switching and the equipment such as wireless electric curtain and projecting apparatus control device.But general radio-frequency module without power detection power, user cannot be allowed to understand the current operating state of equipment, when working long hours or receiving the signal of other power exception, amplifier in module and other auxiliary device easily work overloadingly, decrease the working life of radio-frequency module, easy radio frequency equipment causes misoperation, what simultaneously power-sensing circuit exported is one close to linear voltage signal instead of logic low and high level signal, easily be interfered, be not suitable for directly controlling radio-frequency module working condition, need to extract voltmeter from process chip internal memory and judge operating state, add the pressure of process chip.
Summary of the invention
The power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption provided by the invention, user can be allowed to understand the current operating state of equipment, when working long hours or receiving the signal of other power exception, the reception of shutoff signal, the amplifier in module and other auxiliary device is made to avoid overwork, add the working life of radio-frequency module, prevent radio frequency equipment from causing misoperation, directly control radio-frequency module work by level driven in translation, a pair inversion signal also can avoid various interference.
A power detection radio-frequency module for the flat driven in translation of Smart Home electricity consumption, comprising: antenna-matching circuit: comprise antenna and carry out impedance matching and signal filtering to antenna; Directional coupler: the signal transmitted by antenna-matching circuit is converted to two paths of signals and sends balun circuit and process chip respectively to; Balun circuit: the difference radio-frequency signal transmitted by directional coupler is converted to one-channel signal, and one-channel signal is sent to power-sensing circuit; Power-sensing circuit: the power detecting the one-channel signal that balun circuit sends, and the voltage exported is to level driven in translation circuit; Level driven in translation circuit: the single control signal of power-sensing circuit is become the control signal that strong a pair of stable driving force is anti-phase, control signal is sent to process chip; Power circuit: will be that 5V voltage is powered to module to outside voltage transitions; Voltage conversion circuit: module voltage is converted to 3.3V by 5V process chip is powered; Process chip: received RF signal according to the detection voltage judge module operating state of power-sensing circuit; Signal is become two-way through directional coupler by the signal of antenna-matching circuit, one tunnel is converted to one-channel signal to power detection signal circuit through balun circuit, detection signal is sent to level driven in translation circuit and the control signal of near-linear is turned and be depicted as a pair inverting level control signal, control signal is sent to process chip, carry out reception to another circuit-switched data signal time normal to send, time abnormal, turn-off data receives and ensures that the hardware of module is normal.
Further, described antenna-matching circuit comprises antenna integrated and SMA interface, antenna integrated cannot meet instructions for use time, the receiving efficiency of signal can be improved by external stand-alone antenna.
Further, the output of described voltage conversion circuit and output are all connected with filter capacitor ground connection, effectively avoid the interference of other signal radio frequency signal in circuit.
Further, described directional coupler is three-dB coupler, and two paths of signals and the input signal of output are identical, ensure that the accuracy of power detection and Signal transmissions.
Further, described power-sensing circuit is diode power-sensing circuit, include a power diode and an in-phase amplification circuit, the detection of signal is realized by power diode D1, electric capacity C15 and resistance R6, resistance R7, R8, R9 and integrated transporting discharging U1A form in-phase amplification circuit, output OUT1 contact resistance R10 ground connection, resistance R10 is as load resistance.
Further, described level driven in translation circuit comprises a triode and a two P-channel field-effect transistor (PEFT) pipe, by triode, power detection voltage signal is amplified two P-channel field-effect transistor (PEFT) pipe of coming in and going out, one is allowed to be converted into a pair logic low and high level signal close to linear voltage signal, logic low and high level signal is more stable than linear voltage, be not easy to be interfered, two detection signal can connect indication LED respectively, can with understanding module work state intuitively.
Beneficial effect of the present invention is to allow user understand the current operating state of equipment, when working long hours or receiving the signal of other power exception, the reception of shutoff signal, the amplifier in module and other auxiliary device is made to avoid overwork, add the working life of radio-frequency module, prevent radio frequency equipment from causing misoperation, directly control radio-frequency module work by level driven in translation, a pair inversion signal also can avoid temperature drift and various interference.
Accompanying drawing explanation
Fig. 1 is radio-frequency module schematic diagram of the present invention.
Fig. 2 is antenna-matching circuit schematic diagram of the present invention.
Fig. 3 is power-sensing circuit schematic diagram of the present invention.
Fig. 4 is voltage conversion circuit schematic diagram of the present invention.
Fig. 5 is process chip circuit diagram of the present invention.
Fig. 6 is level driven in translation circuit diagram of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As one embodiment of the present of invention, antenna-matching circuit considers that receive frequency is the signal of 433M, antenna integrated connection load resistance R1, SMA interface connects load resistance R2, be connected with the electric capacity C3 of 200pF after resistance R1 is connected with the R2 other end, the electric capacity C3 other end passes through the electric capacity C4 ground connection of 12pF after connecting the inductance L 3 of 33nH, L3 two ends connect the inductance L 2 of C3 and 18nH, the electric capacity C5 ground connection of 6.8pF is also connected with between electric capacity C3 and inductance L 3, inductance L 2 other end connects two ports of inductance L 4 as difference radio-frequency signal of electric capacity C2 and 33nH of 6.8pF respectively, the radiofrequency signal port of electric capacity C2 connects ground connection after the inductance L 1 of 33nH and the electric capacity C1 of 220pF successively, the radiofrequency signal port of inductance L 4 connects the electric capacity C6 ground connection of 6.8pF.
Use power diode D1 for HSMS-2850 in power-sensing circuit, integrated transporting discharging U1A is AD642JH, the differential sense signal of directional coupler transmission is converted to through balun circuit the positive level that single-ended signal is connected to power diode D1, the positive pole of D1 is also connected with resistance R5 ground connection, and the negative pole of D1 is connected with electric capacity C15 and is also connected with integrated transporting discharging U1A negative input by resistance R7 outward with resistance R6 ground connection; The electrode input end of U1A is connected with resistance R8 ground connection and is also connected with U1A output OUT1 by resistance R9 outward, and U1A output is also connected with R10 ground connection.Power diode D1, electric capacity C15 and resistance R6 realize the detection of signal, and resistance R7, R8, R9 and integrated transporting discharging U1A form in-phase amplification circuit, and output OUT1 contact resistance R10 ground connection, resistance R10 is as load resistance.Output OUT1 is connected with the IN1 of level driven in translation circuit.
Level driven in translation circuit in embodiment use a model be 9011 a NPN triode Q1 and model two P-channel field-effect transistor (PEFT) pipe U4 that are RF1k49093, circuit input end is by the base stage of resistance R16 connecting triode Q1, and circuit input end also connects electric capacity C9 ground connection, triode Q1 grounded collector, emitter is also connected with the port 6 of chip U4 by the emitter of resistance R15 connection VCC, Q1, VCC is connected again after the port 4 of chip U4 is connected with port 8, port 2, be connected with resistance R14 and inductance L 6 after port 5 is connected with port 7, R14 other end ground connection, the L6 other end is as output TX and contact resistance R11 and LED 1 ground connection successively, the port one of chip U4 is connected with port 3 and is connected with resistance R13 and inductance L 5 afterwards, R13 ground connection, the L5 other end is also as output RX and contact resistance R12 and LED 2 ground connection successively, two light-emitting diode can show the operating state of radio-frequency module intuitively, when power stage is too high or too low, can be represented respectively by two light-emitting diodes.
The 220V of standard is adopted to turn the usb circuit of 5V in embodiment, so the voltage using chip LM1117 to change 5V is powered into process chip CC1110 into 3.3V, LM1117 input connects polar capacitor C11 and electric capacity C12 ground connection, output connects polar capacitor C14 and electric capacity C13 ground connection, and at the two ends of voltage transitions, equal filtering clutter interference ensures the stability of voltage transitions.
Process chip adopts the CC1110 of TI company, it adopts external crystal-controlled oscillation Y1 to provide system clock, RF_P with RF_N is connected the signal transmission of directional coupler simultaneously, I/O port Q1 with Q2 is connected output RX and TX of level driven in translation circuit, capacity earth exclusive PCR is connected to untapped function port, I/O mouth P0 to P7, as rf data output, carries out connection according to port concrete condition and uses.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a power detection radio-frequency module for the flat driven in translation of Smart Home electricity consumption, is characterized in that comprising:
Antenna-matching circuit: comprise antenna and impedance matching and signal filtering are carried out to antenna;
Directional coupler: the signal transmitted by antenna-matching circuit is converted to two paths of signals and sends balun circuit and process chip respectively to;
Balun circuit: the difference radio-frequency signal transmitted by directional coupler is converted to one-channel signal, and one-channel signal is sent to power-sensing circuit;
Power-sensing circuit: the power detecting the one-channel signal that balun circuit sends, and the voltage exported is to level driven in translation circuit;
Level driven in translation circuit: the single control signal of power-sensing circuit is become the control signal that strong a pair of stable driving force is anti-phase, control signal is sent to process chip
Power circuit: will be that 5V voltage is powered to module to outside voltage transitions;
Voltage conversion circuit: module voltage is converted to 3.3V by 5V process chip is powered;
Process chip: received RF signal according to the control signal judge module operating state of level driven in translation circuit.
2. the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption according to claim 1, is characterized in that, described antenna-matching circuit comprises antenna integrated and SMA interface.
3. the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption according to claim 1, it is characterized in that, the output of described voltage conversion circuit and output are all connected with filter capacitor ground connection.
4. the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption according to claim 1, is characterized in that, described directional coupler is three-dB coupler.
5. the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption according to claim 1, it is characterized in that, described power-sensing circuit is diode power-sensing circuit, includes a power diode and an in-phase amplification circuit.
6. the power detection radio-frequency module of the flat driven in translation of a kind of Smart Home electricity consumption according to claim 1, is characterized in that, described level driven in translation circuit comprises a triode and a two P-channel field-effect transistor (PEFT) pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510402798.7A CN105007127A (en) | 2015-07-10 | 2015-07-10 | Level shift driving power detection radio frequency module for smart home |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510402798.7A CN105007127A (en) | 2015-07-10 | 2015-07-10 | Level shift driving power detection radio frequency module for smart home |
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| CN201510402798.7A Pending CN105007127A (en) | 2015-07-10 | 2015-07-10 | Level shift driving power detection radio frequency module for smart home |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332426A (en) * | 2016-10-19 | 2017-01-11 | 成都尚智恒达科技有限公司 | Street lamp control circuit with power output detection port |
| CN107482715A (en) * | 2017-08-11 | 2017-12-15 | 惠州市蓝微电子有限公司 | A kind of charge-discharge control system of power source |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202374468U (en) * | 2011-12-20 | 2012-08-08 | 弘浩明传科技(北京)股份有限公司 | Integrated power amplifier for wireless access point |
| JP5107777B2 (en) * | 2008-04-10 | 2012-12-26 | 株式会社日立製作所 | Receiving device, reader / writer, and RFID system |
| CN103595431A (en) * | 2012-08-13 | 2014-02-19 | 晨星软件研发(深圳)有限公司 | A transceiver applicable to radio frequency identification and a noise elimination method |
| CN104732254A (en) * | 2014-10-08 | 2015-06-24 | 南京邮电大学 | Radio frequency identification reader and writer |
| CN204886980U (en) * | 2015-07-10 | 2015-12-16 | 成都弘毅天承科技有限公司 | Intelligence house power consumption averagely moves driven power detection radio frequency module |
-
2015
- 2015-07-10 CN CN201510402798.7A patent/CN105007127A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5107777B2 (en) * | 2008-04-10 | 2012-12-26 | 株式会社日立製作所 | Receiving device, reader / writer, and RFID system |
| CN202374468U (en) * | 2011-12-20 | 2012-08-08 | 弘浩明传科技(北京)股份有限公司 | Integrated power amplifier for wireless access point |
| CN103595431A (en) * | 2012-08-13 | 2014-02-19 | 晨星软件研发(深圳)有限公司 | A transceiver applicable to radio frequency identification and a noise elimination method |
| CN104732254A (en) * | 2014-10-08 | 2015-06-24 | 南京邮电大学 | Radio frequency identification reader and writer |
| CN204886980U (en) * | 2015-07-10 | 2015-12-16 | 成都弘毅天承科技有限公司 | Intelligence house power consumption averagely moves driven power detection radio frequency module |
Non-Patent Citations (2)
| Title |
|---|
| 商昌彬: ""基于μC/OS-Ⅱ的双协议超高频RFID读写器的设计"", 《中国优秀硕士学位论文全文数据库（信息科技辑）》 * |
| 方舒、张辉全: ""2.4G射频双向功放的设计与实现"", 《世界电子元器件》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332426A (en) * | 2016-10-19 | 2017-01-11 | 成都尚智恒达科技有限公司 | Street lamp control circuit with power output detection port |
| CN107482715A (en) * | 2017-08-11 | 2017-12-15 | 惠州市蓝微电子有限公司 | A kind of charge-discharge control system of power source |
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Application publication date: 20151028 |