CN100461227C - Industrial radio remote controller - Google Patents
Industrial radio remote controller Download PDFInfo
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- CN100461227C CN100461227C CNB2007100344485A CN200710034448A CN100461227C CN 100461227 C CN100461227 C CN 100461227C CN B2007100344485 A CNB2007100344485 A CN B2007100344485A CN 200710034448 A CN200710034448 A CN 200710034448A CN 100461227 C CN100461227 C CN 100461227C
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Abstract
The invention discloses an industrial wireless remote control comprising a transmitter and a receiver, wherein the transmitter includes a baseband containing a micro-processor and a transmitting passage containing a frequency synthesizer, the receiver comprises the baseband containing a micro-processor and a receiving passage containing a frequency synthesizer, both the transmitter and the receiver futher include a wideband receiver and are designed as a double core structure containing a digital signal processor, the frequency synthesizers of the transmitter and the receiver use direct digital frequency synthesizers formed by phase accumulators, D/A converters and low pass filters. The invention has an excellent anti-interference performance, especially co-channel interference resistance, safe and reliable work, strong aseismatic performance, can satisfy operation of an industrial device under various complex conditions.
Description
Technical field
The present invention relates to a kind of industrial radio remote controller.
Background technology
Industrial radio remote controller is used for the operation of remote control commercial unit, usually form by transmitter and receiver, its transmitter and receiver of current industrial radio remote controller still adopts the single-simplex operation pattern, the transmission channel of transmitter adopts MSK and FM secondary modulation scheme: subcarrier-modulated adopts the MSK system, local oscillator in the transmitter adopts frequency synthesizer of phase locking, and what base band adopted is monokaryon (microprocessor).Transmitter is finished the scanning of pushbutton switch by the microprocessor in the base band, forms the serial command sign indicating number, and chnnel coding is carried out in instruction, forms the data stream of emission; Transmission channel will carry out subcarrier MSK modulation from the low rate data streams (1Kbps) that microprocessor comes; After the filtering of MSK modulation signal, carry out linear FM modulation, finally form radio frequency FM output signal.What the local oscillator in the receiver receiving cable adopted also is frequency synthesizer of phase locking, and what base band adopted also is monokaryon, radiofrequency signal enters receiving cable, finishes low noise amplification, a mixing, intermediate frequency amplification and filtering, two mixing, intermediate-freuqncy signal amplification and hard-limiting control, carries out the FM demodulation again; Carry out the msk signal demodulation after the FM demodulation and recover binary data stream, send baseband circuit to handle, result is carried out by instruction execution unit, finishes the control to equipment.The major defect of this telepilot is that interference free performance is poor, especially anti-co-channel interference poor performance is because transmitter and receiver adopts the single-simplex operation pattern, when there is interference in receiver, transmitter can not disturb to be differentiated and the automatic channel of changing, and exists channel to change simultaneously and waits shortcoming slowly.Therefore when having co-channel interference on the working channel, can not eliminate and disturb or withdraw from interference channel.Simultaneously local oscillator uses the frequency synthesizer of phase locking anti-vibration characteristic poor in the Receiver And Transmitter, changes frequency speed slow (usually need about 80ms time with changing a channel).Along with various commercial units become increasingly complex, control accuracy requires more and more higher, and uses the situation of several telepilots also can constantly occur simultaneously with several equipment of occasion, and therefore present this industrial telepilot can not satisfy the needs of industrial remote control.
Summary of the invention
The object of the present invention is to provide a kind of good in anti-interference performance, resistance to shock is strong, changes the fast industrial radio remote controller of channel speed.
This industrial radio remote controller provided by the invention, comprise transmitter and receiver, wherein transmitter comprises base band that contains microprocessor and the transmission channel that contains frequency synthesizer, receiver comprises base band that contains microprocessor and the receiving cable that contains frequency synthesizer, described transmitter and receiver also respectively has a broadband receiver, transmitter and receiver base band separately all is designed to also contain the dual-core architecture of a digital signal processor, and the frequency synthesizer of transmitter and receiver all adopts by phase accumulator, the digital frequency synthesizer that D/A converter and low-pass filter form, described broadband receiver contains quadrature receiver at least, broadband operational amplifier, oscillator and frequency synthesizer; Transmitter adopts transmission duplex, by the microprocessor in the transmitter base band key command is formed the serial command sign indicating number, after by digital signal processor telecommand being carried out spread spectrum, carry out the command channel coding by microprocessor again, form data streams, launch by transmission channel, the signal that broadband receiver receives carries out characteristics of signals by digital signal processor and handles and analyze, guide by microprocessor, by the modulator in the digital frequency synthesizer control transmission channel, modulation channel is to clear channel; The broadband receiver of receiver adapts to transmitting of transmitter and adjusts the channel that receives, the signal of broadband receiver being sent here by the digital signal processor in the receiver base band carries out characteristic processing and analysis, guiding by microprocessor, the reference signal of the detuner demodulation in the receiving cable is provided by the digital frequency synthesizer of receiver, the receiving cable of receiver is input to digital signal processor with the secondary demodulation signal that receives and carries out spread spectrum demodulation, and be converted to the control signal of operating equipment by microprocessor, by interface circuit control signal is passed to instruction execution unit.
The present invention uses broadband receiver in transmitter, can help transmitter self to adapt to judgement undesired signal characteristics, and be transformed into new clear channel work.Applicable broadband receiver technology in receiver can make receiver self-adaptation transmitter and adjusts the channel of reception, reaches the purpose of anti-co-channel interference.The base band of transmitter and receiver all is designed to dual-core architecture (digital signal processor and a microprocessor) working method, can improve signal handling capacity, carry out Signal Processing by Digital Signal Processing, analyze the characteristic of received signal, simultaneously the instruction and data that receives is handled, security fault appears in anti-locking system, the employing of double-core technology is technical in secondary modulation in addition, can increase spread spectrum to telecommand, further play the effect of anti-co-channel interference, such as: spread spectrum is got spread processing gain 10dB, reach the about 3dB of anti-co-channel interference in theory, when being the strong 3dB of the power ratio available signal power of co-channel interference signal, the system that can not influence normally receives.Frequency synthesizer employing Direct Digital frequency synthesizer has improved shock resistance and the channel switch speed is faster.Therefore the present invention has extraordinary interference free performance, especially anti-co-channel interference, and also safe and reliable, shock resistance is strong, can satisfy the operation of commercial unit under the various complex situations.
Description of drawings
Fig. 1 is the schematic block circuit diagram of prior art.
Fig. 2 is a schematic block circuit diagram of the present invention.
Fig. 3 A-Fig. 3 E is that circuit of the present invention is always schemed, and it is presented at the 3rd to 7 page of Figure of description.
Fig. 4 is a secondary modulation circuit diagram of the present invention.
Fig. 5 is a digital frequency synthesizer circuit diagram of the present invention.
Fig. 6 is a broadband receiver circuit diagram of the present invention.
Fig. 7 is baseband circuit figure of the present invention.
Embodiment
Fig. 2-Fig. 7 has reflected formation of the present invention and physical circuit.
From Fig. 2 and Fig. 3 A-Fig. 3 E as can be seen, the present invention includes transmitter of forming by transmission channel, broadband receiver and base band and the receiver of forming by receiving cable, broadband receiver and base band, wherein the transmission channel of transmitter still adopts the secondary modulation mode, therefore transmission channel still has frequency synthesizer, MSK modulator, once amplification and wave filter, FM modulator, secondary amplify and wave filter, but frequency synthesizer adopts the digital frequency synthesizer that is formed by phase accumulator, D/A converter and low-pass filter.A microprocessor is still arranged, this microprocessor interface circuit, interface circuit instruction button of ining succession of still ining succession, but also have a digital signal processor, this digital signal processor formation dual-core architecture that links to each other with microprocessor in the base band of transmitter.Key information forms the serial command sign indicating number by interface circuit to microprocessor, after by signal processor telecommand being increased spread spectrum, carry out the command channel coding by microprocessor again, form data streams, MSK modulation by transmission channel, filtering, the FM modulation, amplify and filtering emission afterwards, receive by broadband receiver, the conversion of signals of A/D converter, by digital signal processor the signal that receives is carried out specificity analysis and processing again, self-adaptive decision undesired signal characteristics, automatically select clear channel, guiding by microprocessor, by the MSK modulator in the digital frequency synthesizer control transmission channel, the FM modulator, modulation channel is to clear channel.
The receiving cable of receiver still adopts the secondary mediation practices, therefore receiving cable still have in low noise amplifier amplifications, a mixing, intermediate frequency amplifier, wave filter, two mixing, two put, hard width of cloth device, frequency modulation demodulator, MSK detuner and frequency synthesizer, but the frequency synthesizer employing is the digital frequency synthesizer that is formed by phase accumulator, D/A converter and low-pass filter.The base band of receiver still has a microprocessor, and interface circuit, one of them interface circuit is used to export control signal and instruction performance element and connects, another interface circuit is connected with the MSK detuner of receiving cable, but base band also comprises a digital signal processor, this digital signal processor links to each other with microprocessor, forms dual-core architecture.The antenna of receiver receive signal through low noise amplifier amplification, a mixing, intermediate frequency amplifier amplify, put in two mixing, two, hard width of cloth device, after reconciling, frequency modulation carries out the MSK demodulation again, carry out spread spectrum demodulation to digital signal processor, and by the microprocessor control signal; Broadband receiver adapts to transmitting of transmitter and adjusts the channel that receives, the signal of by digital signal processor broadband receiver being sent here by A/D converter carries out specificity analysis and processing, self-adaptive decision undesired signal characteristics, automatically select clear channel, guiding by microprocessor, by digital frequency synthesizer control MSK demodulator, the demodulation of FM demodulator, by interface circuit control signal is passed to instruction execution unit and carries out, finish control to equipment.
Fig. 4 is a secondary modulation circuit diagram of the present invention.
U1 among the figure (CPLD of altera corp chip EPM7128S-PLC/1) is that programmable logic device (PLD), U2 are MSK modulation chip, U3 position FM modulation device.
U1 receives from the order code of D00～D07 input, forms the spread-spectrum signal of 1Kcp in U1, and this spread-spectrum signal is hinted obliquely at into output signal TxUAT, outputs to the TxUAT end of U2 from the TxUAT of U1, and this just forms data stream to be modulated; Carry out the MSK modulation in U2, the subcarrier of modulation is got 1200Hz, and msk signal inserts the modulation signal input end TZ of U3 from the output of TxSIG pin, and modulation index gets 3.5; In radio band output FM FM signal, output pin is RF_out.The present invention increases spread spectrum (DSSS) to telecommand, play anti-co-channel interference, get spread processing gain 10dB, reach the about 3dB of anti-co-channel interference in theory, when being the strong 3dB of the power ratio available signal power of co-channel interference signal, the system that can not influence normally receives.
Fig. 5 is digital frequency synthesizer circuit theory diagrams of the present invention.
The high integration product A D9851 chip that digital frequency synthesizer of the present invention has adopted U.S. AD company to adopt advanced DDS direct digital frequency synthesis technology to produce.Adopt the programmable logic device (PLD) EPM7128S-PLC/1 of altera corp as AD9851 peripheral circuit and Interface design.
Referring to Fig. 5, wherein U1 is that reference oscillator, U2 are that frequency multiplier, U3 are that mixing filter, U4 are that programmable logic device (PLD), U5 are that numerical frequency synthesis chip, U6 are low-pass filter.
The reference frequency that the U1 reference oscillator produces divides three the tunnel to deliver to programmable logic device (PLD), numerical frequency synthesis chip and frequency multiplier; The radiofrequency signal of frequency multiplier output megahertz more than 350; Programmable logic device (PLD) control figure frequency synthesis chip produces the point-frequency signal of about 5MHz, and through exporting sinusoidal signal behind the U6 low-pass filter, this sinusoidal signal can change fast, and the time of conversion is the microsecond magnitude; The mixing in U3 of two-way output signal, filtering obtain the composite signal of about 355MHz, as the local oscillation signal of receiver or transmitter.
Fig. 6 is broadband receiver circuit theory diagrams of the present invention.
Broadband receiver can adopt any one broadband reception circuit that contains quadrature receiver, broadband operational amplifier, oscillator, frequency synthesizer at least, and what adopt in the present embodiment is the Direct Transform digital receiver.This wideband digital receiver is for the receiver of 25KHz bandwidth, and it can once receive the modulation signal of four channels, and bandwidth is 100KHz.
Wherein: U1 is a quadrature receiver, and U2 and U3 are broadband operational amplifier, and U4 is the two-way A/D converter, and U5 is a programmable logic device (PLD), and U6 is a reference oscillator, and U7 is MCU (microprocessor), and U8 is a frequency synthesizer of phase locking, and U9 is the voltage-regulation oscillator.
Intermediate-freuqncy signal is from the IFIP end input of U1 (the high performance wideband quadrature demodulator AD8348 of ADI company), convert directly to baseband signal I, Q through U1, through after the filtering, after U2 and U3 amplification buffering, send U4 to carry out A/D conversion (the double channel data acquisition chip AD9059 of AD company), form digital signal, this digital signal process in U5 (MAX II Broadcom company) programmable logic device (PLD) is anticipated, and forms the interface signal form that DSP requires.
U6 is the reference crystal oscillator, the clock source is provided, U7 (Philips company produces P87LPC760--low-power consumption, tubule pin OTP single-chip microcomputer) is MCU, for U8 (the fixed RF phase-locked loop of new generation of LMX2347) frequency synthesizer of phase locking provides configuration information, the frequency that U9 (the high differential voltage of the MAX2607 of Maxim company) vibration and output require, the frequency signal that the synthetic U1 of this part circuit needs.The working channel number of this broadband receiver support is 8, can satisfy the requirement of 13 working channels of industrial telechirics by the combination utilization.
Fig. 7 is dual-core architecture figure in the base band of the present invention.
U1 is MCU (microprocessor) among the figure, and U2 is DSP (digital signal processor), and U3 is a house dog.
After the MCU startup work, by serial ports and DSP exchange message, monitor the duty of DSP, MCU itself also is subjected to the control of house dog simultaneously, so that can enter normal operating conditions when program flies; While MCU bridge interface circuit.The EPM7128S-PLC/1CPLD chip of programmable logic device (PLD) altera corp is adopted in the design of interface circuit (see figure 3), the MC56000 series that DSP adopts Freescale company to produce, and MCU adopts the product of Microchip company.
DSP reads the data of A/D conversion output by the EMIF interface, carries out the received signal demodulation simultaneously of four channels, recovers the data that send, send MCU by serial ports, MCU hints obliquely at the drive signal that becomes to need with order, with the control executing mechanism action, finishes the task of appointment.
The key technical indexes:
Subcarrier: 2KHz
Rf frequency: 418MHz ~ 420MHz (single channel bandwidth: 25KHz)
Frequency stability: 2ppm
Harmonic wave is suppressed greater than 40dBc;
To spuious inhibition greater than 60dBc;
The linearity output 10dBm of linear amplifier
Receive frequency: 418MHz ~ 420MHz (single channel bandwidth: 25KHz)
Noise figure: 4dB
Local frequency degree of stability: 2ppm
Sensitivity :-115dBm
System's full gain: 115dB;
Error rate of system:＜1 * 10
-5
Claims (1)
1. industrial radio remote controller, comprise transmitter and receiver, wherein transmitter comprises base band that contains microprocessor and the transmission channel that contains frequency synthesizer, receiver comprises base band that contains microprocessor and the receiving cable that contains frequency synthesizer, it is characterized in that described transmitter and receiver also respectively has a broadband receiver, transmitter and receiver base band separately all is designed to also contain the dual-core architecture of a digital signal processor, and the frequency synthesizer of transmitter and receiver all adopts by phase accumulator, the digital frequency synthesizer that D/A converter and low-pass filter form, described broadband receiver contains quadrature receiver at least, broadband operational amplifier, oscillator and described frequency synthesizer; Transmitter adopts transmission duplex, by the microprocessor in the transmitter base band key command is formed the serial command sign indicating number, after by digital signal processor telecommand being carried out spread spectrum, carry out the command channel coding by microprocessor again, form data streams, launch by transmission channel, the signal that broadband receiver receives carries out characteristics of signals by digital signal processor and handles and analyze, guide by microprocessor, by the modulator in the digital frequency synthesizer control transmission channel, modulation channel is to clear channel; The broadband receiver of receiver adapts to transmitting of transmitter and adjusts the channel that receives, the signal of broadband receiver being sent here by the digital signal processor in the receiver base band carries out characteristic processing and analysis, guiding by microprocessor, the reference signal of the detuner demodulation in the receiving cable is provided by the digital frequency synthesizer of receiver, the receiving cable of receiver is input to digital signal processor with the secondary demodulation signal that receives and carries out spread spectrum demodulation, and be converted to the control signal of operating equipment by microprocessor, by interface circuit control signal is passed to instruction execution unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100344485A CN100461227C (en) | 2007-02-14 | 2007-02-14 | Industrial radio remote controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100344485A CN100461227C (en) | 2007-02-14 | 2007-02-14 | Industrial radio remote controller |
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| Publication Number | Publication Date |
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| CN101055668A CN101055668A (en) | 2007-10-17 |
| CN100461227C true CN100461227C (en) | 2009-02-11 |
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| CNB2007100344485A Expired - Fee Related CN100461227C (en) | 2007-02-14 | 2007-02-14 | Industrial radio remote controller |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354018A (en) * | 2012-09-29 | 2013-10-16 | 苏州华电电气股份有限公司 | Battery-and-maintenance free wireless remote controller |
| CN104637285B (en) * | 2015-02-28 | 2018-10-16 | 安徽师范大学 | A kind of industrial wireless remote control device and remote control method |
| CN105225455B (en) * | 2015-10-20 | 2019-04-19 | 中北大学 | A kind of turntable wireless proximity telemetry system |
| CN107144751B (en) * | 2017-06-09 | 2020-06-09 | 中国电子科技集团公司第四十一研究所 | Multi-channel vector network parameter analysis system and method |
| CN116774644B (en) * | 2023-08-17 | 2023-12-22 | 武汉世炬信息技术有限公司 | Industrial automation control system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667823Y (en) * | 2003-01-09 | 2004-12-29 | 杭州士兰微电子股份有限公司 | Variable frequency automatic radio frequency modulated ear phone remote controller |
| CN1764092A (en) * | 2004-10-20 | 2006-04-26 | 玴荣科技股份有限公司 | Method for preventing transmitting-receiving disturbance of electronic input apparatus signal |
| CN1805570A (en) * | 2005-01-12 | 2006-07-19 | 乐金电子(中国)研究开发中心有限公司 | Mobile telephone based television remote controller |
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2007
- 2007-02-14 CN CNB2007100344485A patent/CN100461227C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667823Y (en) * | 2003-01-09 | 2004-12-29 | 杭州士兰微电子股份有限公司 | Variable frequency automatic radio frequency modulated ear phone remote controller |
| CN1764092A (en) * | 2004-10-20 | 2006-04-26 | 玴荣科技股份有限公司 | Method for preventing transmitting-receiving disturbance of electronic input apparatus signal |
| CN1805570A (en) * | 2005-01-12 | 2006-07-19 | 乐金电子(中国)研究开发中心有限公司 | Mobile telephone based television remote controller |
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