CN202735741U - Wireless communication signal relay system - Google Patents
Wireless communication signal relay system Download PDFInfo
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- CN202735741U CN202735741U CN 201220330685 CN201220330685U CN202735741U CN 202735741 U CN202735741 U CN 202735741U CN 201220330685 CN201220330685 CN 201220330685 CN 201220330685 U CN201220330685 U CN 201220330685U CN 202735741 U CN202735741 U CN 202735741U
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Abstract
The utility model discloses a wireless communication signal relay system comprising a housing, a power supply input terminal, a relay output terminal, an indicating lamp, a radio frequency one-chip microcomputer module, a power supply module, a signal relay module, and a remote control center. The power communication supply input terminal of the wireless communication signal relay system is connected with a DC power supply. A common end pin, an opened end pin, and a closed end pin of a relay output terminal are connected with a load. The wireless communication signal relay system can be used to monitor the closing or the disconnection of the wireless packaging control signal relay on one hand, and can be used to feed the current state of the signal relay or the load power consumption back to the remote control center wirelessly on the other hand.
Description
Technical field
The utility model belongs to industrial automatic control and wireless communication technique field, is specifically related to a kind of equipment and using method thereof of utilizing wireless communication technique to realize signal relay is automatically controlled and monitored.
Background technology
Relay is a kind of electronic control device, it has control system (claim not only input circuit) and by control system (but also claiming output loop), usually be applied in the automatic control circuit, it is actually a kind of " automatic switch " that removes to control larger electric current with less electric current.Therefore in circuit, play the effects such as automatic adjusting, safeguard protection, change-over circuit.
The control of traditional signal relay all is to adopt wired control mode, yet, the occasion that enters in some personnel's inconvenience, perhaps the relay long-distance distribution is in the situation that many places, and wired control mode just seems and is not suitable for.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of signal relay system and using method thereof of wireless telecommunications, solved the occasion that enters in some personnel's inconvenience, perhaps the signal relay long-distance distribution is in the situation that many places, the problem of remote control signal relay.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of signal relay system of wireless telecommunications, the signal relay system that it is characterized in that described wireless telecommunications comprises: shell, power input terminal, relay output end, pilot lamp, the radio frequency one-chip computer module, power module and signal relay module, remote control center, described power input terminal is used for connecting direct supply, relay output end is used for connecting load, described pilot lamp is by signal lamp, status indicator lamp and alarm lamp form, described radio frequency one-chip computer module is used for the state of the wireless package of monitoring air, if monitor the control command package, then resolve the content in the package, and according to the closed of its content control signal relay module or disconnect, the closed and disconnected that is represented relay module by status indicator lamp, if the radio frequency one-chip computer module monitors the status poll package, then the state wireless feedback that relay module is current is to remote control center, if monitor the consumption detection package, then with load current working current value wireless feedback to remote control center, described
The outside high frequency quartz oscillator that connects of radio frequency one-chip computer module,The function of described signal relay module also is: if abnormal disconnects or closing phenomenon, the signal relay module in time is wirelessly sent to remote control center with abnormal occurrence, and lights alarm lamp.
Preferably, the signal relay system of described wireless telecommunications is characterized in that power module comprises the power management chip of 5V Voltage-output, is used for providing relay coil and the required DC voltage of radio-frequency (RF) power amplification.
Preferably, the signal relay system of described wireless telecommunications is characterized in that power module comprises rectification, filtering, transformation and voltage stabilizing circuit module, provides radio-frequency (RF) power amplification required DC voltage.
Preferably, the signal relay system of described wireless telecommunications is characterized in that power module also comprises the power management chip of 3.3V Voltage-output, and being used for provides the radio frequency single-chip microcomputer required operating voltage.
Preferably, the signal relay system of described wireless telecommunications is characterized in that the outside high frequency quartz oscillator that connects of radio frequency one-chip computer module.
Preferably, the signal relay system of described wireless telecommunications is characterized in that the prevention at radio-frequency port of radio frequency one-chip computer module connects balun circuit, impedance matching circuit and antenna.
Preferably, the signal relay system of described wireless telecommunications is characterized in that the prevention at radio-frequency port of radio frequency one-chip computer module need increase the radio-frequency (RF) power amplification circuit module in order to strengthen transmission range and the penetration capacity of wireless signal.
As preferably, described radio-frequency (RF) power amplification circuit module is characterized in that also need comprising two channel selector switchs except the radio-frequency (RF) power amplification chip, is used for switching the sending and receiving of radiofrequency signal.
Preferably, described signal relay has common port pin, Chang Kaiduan pin and normal-closed end pin.
As preferably, the signal relay system of described wireless telecommunications is characterized in that being to detect load power consumption, needs to increase the current monitoring module at the normal-closed end of the signal relay system of wireless telecommunications.
Another purpose of the present utility model is to provide a kind of using method of signal relay system of wireless telecommunications, it is characterized in that said method comprising the steps of:
(1) with the power input sub-connection direct supply of the signal relay system of wireless telecommunications;
(2) with the relay output end sub-connection load of the signal relay system of wireless telecommunications: the common port pin connects load power source, and it is anodal that Chang Kaiduan pin or normal-closed end pin connect load;
(3) the signal relay system of the wireless telecommunications rear signal lamp that powers on periodically glimmers, and its radio frequency single-chip microcomputer is in the state of wireless package in the monitoring air always;
(4) if monitor the control command package, then resolve the content in the package, and according to its content-control relay closes or disconnection, status indicator lamp is lighted and is extinguished and represents respectively relay closes and disconnection;
(5) if monitor the status poll package, then the state wireless feedback that relay is current is to remote control center;
(6) if monitor the consumption detection package, then with load current working current value wireless feedback to remote control center;
(7) if abnormal disconnects or closing phenomenon, the signal relay system of wireless telecommunications will in time be wirelessly sent to abnormal occurrence remote control center, and light alarm lamp.
With respect to scheme of the prior art, the utility model has the advantages that: low cost, long transmission distance, penetration capacity are strong, Interface design and upper-layer protocol are relatively simple, are more suitable in the far distance controlled signal relay, realize quickly and easily the robotization control to terminator.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the signal relay system architecture diagram of wireless telecommunications among the embodiment of the present utility model;
Fig. 2 is power module circuitry schematic diagram among the embodiment of the present utility model;
Fig. 3 is radio-frequency (RF) power amplification circuit module schematic diagram among the embodiment of the present utility model;
Fig. 4 is signal relay module controls schematic diagram among the embodiment of the present utility model;
Fig. 5 is the workflow diagram of the signal relay system of wireless telecommunications among the embodiment of the present utility model;
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit scope of the present utility model for explanation the utility model.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
The signal relay system of a kind of wireless telecommunications of embodiment
Such as Fig. 1, the signal relay system of the wireless telecommunications of the present embodiment adopts structure as shown in Figure 1, wherein comprises: shell 1, power input terminal 2, relay output end (being comprised of common port pin 3, Chang Kaiduan pin 4, normal-closed end pin 5), pilot lamp, radio frequency one-chip computer module, power module and signal relay module.Wherein, the shell 1 of the signal relay system of wireless telecommunications is of a size of 82*50*32MM.Power input terminal is the green phoenix terminals of 2 PIN, places the housing exterior left side, is used for connecting 24V or 12V direct supply.Relay output end is the green phoenix terminals of 3 PIN, places the housing exterior right side, is used for connecting load.The load maximum a.c. voltage is 125V AC, and maximum alternating current is 1A, and maximum DC voltage is 30V, and maximum direct current is 2A.Signal lamp is red, places the housing exterior left side, and this pilot lamp will be every the 2S flicker once after the signal relay system of wireless telecommunications powered on.It is green and yellow that status indicator lamp and alarm lamp are respectively, and all places the housing exterior right side, and status indicator lamp is lighted and extinguished and represents respectively the signal relay closed and disconnected.When the abnormal situation, alarm lamp is lighted, and unusually removes the alarm pilot lamp and extinguishes.Radio frequency one-chip computer module, power module and signal relay module etc. all place enclosure.
Below wireless measuring illumination system various piece is described in detail:
The power module that the present embodiment adopts comprises the power management chip of 5V Voltage-output, and being used for provides radio-frequency (RF) power amplification required DC voltage, and detailed circuit as shown in Figure 2.
The characteristic of LM2576 is as follows among Fig. 2: have 3.3V, 5V, 12V, 15V and adjustable voltage to export multiple series; The scope that output voltage is adjustable is 1.23V~37V (reached at the 57V of HV model), the output tolerance of load voltage is to the maximum ± and 4%; 4 peripheral cells of minimum needs can reach the output current of 3A; Wide input voltage range, HV model even can reach 40V~60V; Internal oscillator produces the fixed frequency of 52KHz; Available Transistor-Transistor Logic level is closed output, the low-power consumption standby pattern, and typical standby current is 50 μ A; BUCK formula reducing transformer, higher conversion efficiency; Overheated and overcurrent protection; Can realize the Buck-Boost formula just-the negative voltage transition device.
The pin definitions of LM2576 is as follows: the VIN-Input voltage terminal, and for reducing to input transient voltage and provide switching current to regulator, this pin should connect shunt capacitance; VOUT-output end of pressure-stabilizing, output HIGH voltage are (VIN-VSAT), and output LOW voltage is-0.5V; GND-circuit ground; FB-feedback end; The ON/OFF-control end, high level is effective, and the standby quiescent current only is 75 μ A.
C1 is input capacitance among Fig. 2, and this electric capacity will select the aluminium of low ESR or tantalum electric capacity as shunt capacitance, prevents from large transient voltage occurring at input end.Also have, when input voltage fluctuation is larger, output current has higher, and capacity must be selected greatly, and 470 μ F--10000 μ F are feasible selections; The electric current root-mean-square value of electric capacity will be 1/2 of DC load electric current at least; Based on security consideration, the rated insulation voltage value of electric capacity will be 1.5 times of maximum input voltage.Ceramic disc capacitor must not be selected, serious noise can be caused.What the present embodiment was selected is the alminium electrolytic condenser of Nichicon.
D1 is fly-wheel diode, first-selected schottky diode, because this type of diode switch speed is fast, forward voltage drop is low, reverse recovery time is short, the model that the present embodiment is selected is the common rectifying tube that MBRA340T3 must not select 1N4000/1N5400 and so on.
L1 is energy storage inductor: the inductance selection curve among the datasheet is haveed a good look in suggestion, requires to have high through-current capacity and corresponding inductance value, that is to say, the direct current through-current capacity of inductance directly affects output current.LM2576 both can work in continuous type also can discontinuous type, if flow through the electric current of inductance continuous be continuous type, inductive current drops to zero and is discontinuous type in a switch periods.
C2 is output capacitor, the tantalum electric capacity of the low ESR between the recommendation 1 μ F--470 μ F, and the present embodiment is selected 470 μ F tantalum electric capacity.If capacitance is too large, can cause damage to device some situation (load open circuit, input end disconnect) on the contrary.The stability that output capacitor is used for output filtering and improves loop.If the ESR of electric capacity is too little, just might make feedback control loop unstable, cause the output terminal vibration.This almost is the general character of voltage stabilizer, comprises that LDO etc. also has this phenomenon.
Described power module also comprises the power management chip of 3.3V output, and its model is ASM117-3.3, and being used for provides the radio frequency single-chip microcomputer required operating voltage 3.3V.
The radio frequency single-chip microcomputer model that adopts in the present embodiment radio frequency one-chip computer module as shown in Figure 3 is CC1110F16, and the radio frequency operation frequency range is 433MHz.Its outside high frequency quartz oscillator that connects, frequency is 26MHz, is encapsulated as 3225.The prevention at radio-frequency port of radio frequency single-chip microcomputer connects balun circuit 28, impedance matching circuit 29 and 433MHz spring antenna 30.For strengthening transmission range and the penetration capacity of wireless signal, the prevention at radio-frequency port of radio frequency single-chip microcomputer increases the radio-frequency (RF) power amplification circuit module.The radio-frequency (RF) power amplification circuit module also comprises two channel selector switchs except the radio-frequency (RF) power amplification chip be T/R switch 7 and T/R switch 8, is used for switching the sending and receiving of radiofrequency signal.Its physical circuit connected mode as shown in Figure 3.
The CC1110 radio frequency singlechip chip that the microprocessor of radio frequency one-chip computer module adopts TIX to produce, CC1110 is the real wireless SOC of a kind of low cost, uses for low-consumption wireless and designs.Enhancement mode 8051MCU and a radio transmitting and receiving chip CC1100 that this chip has comprised a standard are encapsulated in the chip of a 6 * 6mm.8051MCU carries 32K Flash and 4K RAM.Radio communication operates mainly in 315,433,868 and the ISM(of 915MHz industry, science and medical science) and the SRD(short-range device) frequency band, can freely be set to 300-348 MHz, 391-464 MHz and 728-928 MHz in ISM band.
The CC1110 radio-frequency (RF) transceiver is integrated highly configurable modulator-demodular unit.This modulator-demodular unit is supported different modulation formats, and its data transmission rate can reach 500kbps.Be integrated in forward error recovery option on the modulator-demodular unit by unlatching, performance is got a promotion.CC1110 provides widely hardware supported for processing data packets, data buffering, burst transfers of data, clear channel estimating, quality of connection indication and electromagnetic wave excites.In addition, CC1110 also comprises park mode timer, electrify restoration circuit (Power On Reset), power-fail detection circuit (Brown Out Detection) and 21 programmable I/O pins of analog-digital converter (ADC), timer (Timer), AES128 coprocessor, WatchDog Timer (Watchdog Timer), 32 kHz crystal oscillators.
The current drain of 0.3uA under the CC1110 radio frequency singlechip chip sleep pattern.The programmable data transfer rate can be as high as 500kBaud, and when speed was 1.2kBaud, CC1110 was under reception and emission mode, and current loss is lower than respectively 16.2 mA or 16 mA.The park mode of CC1110 and the characteristic that is transformed into the ultra-short Time of aggressive mode are particularly suitable for those and require the very long application of battery life.Maximum sensitivity reaches-110dBm, and radio frequency power output able to programme is up to 10dBm.
The CC1110 chip has been simplified the design process of RF circuit greatly as long as the only a few peripheral cell just can be built SoC reliable and stable and low in energy consumption.The sensor node of design is operated in 433 MHz frequency ranges.Upper figure is the reference design that CC1110 cooperates radio-frequency (RF) power amplification to use, and mainly is comprised of CC1110 chip, radio frequency matching circuit, T/R switch, radio-frequency (RF) power amplification and other peripheral cells.
The supply voltage of CC1110 is 3.3V, and the chip back bottom needs ground connection.R1 is direct current biasing resistance, and C7 is decoupling capacitor.Balun circuit 28 is comprised of L1, L2, C1 and C2, realizes the Balanced or unbalanced conversion.Impedance matching circuit 29 is comprised of L3, L4, C4, C5 and C6, be used for the matching chip input, output-resistor, making its input, output-resistor is 50 Ω, simultaneously, and for PA (power amplifier) and the LNA (low noise amplifier) of chip internal provides direct current biasing.The RF signal of CC1110 adopts differential mode, and in 433 MHz frequency ranges, its best differential impedance is 116+j41 Ω.The T/R switch is used for switching the radio frequency sending and receiving, and when sending data packet, the T/R switching over makes radiofrequency signal realize power amplification through radio-frequency (RF) power amplification (PA) to (T) state of transmission; When the receive data package, the T/R switching over is to (R) state of reception, and this moment, radiofrequency signal need not through radio-frequency (RF) power amplification, can directly be received by CC1110.
Fig. 4 is the control principle drawing of signal relay module, wherein the signal relay in the signal relay module is twin coil magnetism holding type DIP relay, model is HFD2/024, it adopts the bifurcated contacts form, high sensitivity, coil power dissipation 150mW, maximum interchange switched voltage is 250V AC, maximum direct current switched voltage is 220V DC, maximum switch current is 3A, and the rated voltage of coil is 125V AC and 30V DC.
CTRL1 and CTRL2 are connected to two I/O ports of radio frequency single-chip microcomputer among the figure, when the CTRL1 port is high level, and triode Q1 conducting, triode Q2 conducting, the coil 31 of signal relay powers on, and signal relay is closed; When the CTRL2 port is high level, triode Q3 conducting, triode Q4 conducting, the coil 32 of signal relay powers on, and signal relay disconnects.The function of signal relay module also is: if abnormal disconnects or closing phenomenon, the signal relay module in time is wirelessly transmitted to remote control center with abnormal occurrence, and lights alarm lamp.
Current monitoring module model in the present embodiment is MAX471, the signal input port of this chip connects the normal-closed end pin of signal relay, signal output port connects the signal relay lead-out terminal, its analog acquisition port ADC_OUT connects the analog to digital conversion port of radio frequency single-chip microcomputer, is used for monitoring current current value.
Drive software uses the IAR software platform to write in the present embodiment radio frequency one-chip computer module, and the workflow diagram of the signal relay system of wireless telecommunications as shown in Figure 5.Concrete using method may further comprise the steps:
(1) with the power input sub-connection direct supply of the signal relay system of wireless telecommunications;
(2) with the relay output end sub-connection load of the signal relay system of wireless telecommunications: the common port pin connects load power source, and it is anodal that Chang Kaiduan pin or normal-closed end pin connect load;
(3) the signal relay system of the wireless telecommunications rear signal lamp that powers on periodically glimmers, and its radio frequency single-chip microcomputer is in the state of wireless package in the monitoring air always;
(4) if monitor the control command package, then resolve the content in the package, and according to its content-control relay closes or disconnection, the state indication is lighted and is extinguished and represents respectively relay closes and disconnection;
(5) if monitor the status poll package, then the state wireless feedback that relay is current is to long-range control center;
(6) if monitor the consumption detection package, then with load current working current value wireless feedback to long-range control center;
(7) if abnormal disconnects or closing phenomenon, the signal relay system of wireless telecommunications in time is wirelessly transmitted to remote control center with abnormal occurrence, and lights alarm lamp.
This processing has a starting point, shown in piece 9, piece 10 expressions are with the power input sub-connection direct supply of the signal relay system of wireless telecommunications, the relay output end sub-connection load that piece 11 represents the signal relay system of wireless telecommunications: the common port pin connects load power source, it is anodal that Chang Kaiduan pin or normal-closed end pin connect load, and piece 12 represents the hardware and software of the signal relay system of next intiating radio communication.
The signal relay system of the wireless telecommunications rear signal lamp that powers on periodically glimmers, its radio frequency single-chip microcomputer is in the state of wireless package in the monitoring air always, shown in piece 17, if monitor the control command package, then resolve the content in the package, shown in piece 20, and according to its content-control relay closes or disconnection, shown in piece 24,25, the state indication is lighted and is extinguished and represents respectively relay closes and disconnection, shown in piece 26,27; If monitor the status poll package, then the state that relay is current carries out wireless feedback, shown in piece 21; If monitor the consumption detection package, then load current working current value is carried out wireless feedback, shown in piece 19, piece 22.
If abnormal disconnects or closing phenomenon, the signal relay system of wireless telecommunications shown in piece 13 in time is wirelessly transmitted to remote control center with abnormal occurrence, shown in piece 14, and lights alarm lamp; If no exceptions disconnection or closing phenomenon but overtime phenomenon has occured, shown in piece 15, then signal lamp flicker is shown in piece 16; If occuring, overtime phenomenon then do not detect wireless package, shown in piece 17.
Above-mentioned example only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the utility model Spirit Essence all should be encompassed within the protection domain of the present utility model.
In sum, the utility model has the advantage of: the signal relay system of wireless telecommunications not only saves cable and quantities, and rapidly in time.Use the free 433MHz ISM band in the whole world, without Internet utilization fee usefulness, also can not be limited by the flow, obstruction of common network etc., and maintenance cost is low.
Claims (1)
1. the signal relay system of wireless telecommunications, it is characterized in that the signal relay system of described wireless telecommunications is by shell, power input terminal, relay output end, pilot lamp, the radio frequency one-chip computer module, power module, signal relay module and a remote control center form, described power input terminal is used for connecting direct supply, relay output end is used for connecting load, described pilot lamp is by signal lamp, status indicator lamp and alarm lamp form, described radio frequency one-chip computer module is used for the state of the wireless package of monitoring air, if monitor the control command package, then resolve the content in the package, and according to the closed of its content control signal relay module or disconnect, the closed and disconnected that is represented relay module by status indicator lamp, if the radio frequency one-chip computer module monitors the status poll package, then the feedback of status that relay module is current is to remote control center, if monitor the consumption detection package, then with load current working current value wireless feedback to remote control center, the outside high frequency quartz oscillator that connects of described radio frequency one-chip computer module, the function of described signal relay module also is: if abnormal disconnects or closing phenomenon, the signal relay module in time is wirelessly sent to remote control center with abnormal occurrence, and lights alarm lamp.
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CN 201220330685 CN202735741U (en) | 2012-07-10 | 2012-07-10 | Wireless communication signal relay system |
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CN 201220330685 CN202735741U (en) | 2012-07-10 | 2012-07-10 | Wireless communication signal relay system |
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CN 201220330685 Expired - Fee Related CN202735741U (en) | 2012-07-10 | 2012-07-10 | Wireless communication signal relay system |
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Granted publication date: 20130213 Termination date: 20130710 |