CN103543670A - Wireless signal relay system capable of automatically controlling and monitoring - Google Patents
Wireless signal relay system capable of automatically controlling and monitoring Download PDFInfo
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- CN103543670A CN103543670A CN201210238123.XA CN201210238123A CN103543670A CN 103543670 A CN103543670 A CN 103543670A CN 201210238123 A CN201210238123 A CN 201210238123A CN 103543670 A CN103543670 A CN 103543670A
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Abstract
The invention discloses a wireless signal relay system capable of automatically controlling and monitoring. The wireless signal relay system is characterized by comprising a shell, power source input terminals, a relay output terminal, an indicating lamp, a radio-frequency single chip microcomputer module, a power source module, a signal relay module and a remote control center. The signal source terminals of the wireless signal relay system are connected with a direct-current power source. A common port pin, a normally-open-end pin and a normally-closed-end pin of the relay output terminal are connected with a load. The wireless signal relay system controls on or off of a signal relay according to monitored wireless packets, and wirelessly feeds current state or load power dissipation of the signal relay back to the remote control center.
Description
Technical field
The invention belongs to industrial automatic control and wireless communication technique field, be 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), conventionally be applied in automatic control circuit, it is actually a kind of " automatic switch " that removes to control larger electric current with less electric current.Therefore play the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.
It is all to adopt wired control mode that traditional signal relay is controlled, yet, the occasion entering in some personnel's inconvenience, or relay long-distance distribution is the in the situation that of many places, and wired control mode just seems and is not suitable for.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of wireless signal relay system and the using method thereof that can automatically control and monitor, solved the occasion entering in some personnel's inconvenience, or signal relay long-distance distribution is the in the situation that of many places, the problem of remote control signal relay.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of wireless signal relay system that can automatically control and monitor, it is characterized in that the described wireless signal relay system that can automatically control and monitor comprises: shell, power input terminal, relay output end, pilot lamp, 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 for monitoring the state of the wireless package of air, if monitor control command package, resolve the content in package, and according to the closed or disconnection of its content control signal relay module, the closed and disconnected that is represented relay module by status indicator lamp, if radio frequency one-chip computer module monitors status poll package, by the current state wireless feedback of relay module to remote control center, if monitor consumption detection package, by load current working current value wireless feedback to remote control center, the prevention at radio-frequency port of described radio frequency one-chip computer module connects balun circuit, impedance matching circuit and antenna, prevention at radio-frequency port is also provided with radio-frequency (RF) power amplification circuit module, in radio-frequency (RF) power amplification circuit module, establish radio-frequency (RF) power amplification chip and be used for strengthening transmission range and the penetration capacity of wireless signal, the function of described signal relay module is also: if there is abnormal disconnection or closing phenomenon, signal relay module is wirelessly sent to remote control center by abnormal occurrence in time, and light alarm lamp.
Preferably, the described wireless signal relay system that can automatically control and monitor is characterized in that the power management chip that power module comprises 5V Voltage-output, for providing relay coil and radio-frequency (RF) power amplification required DC voltage.
Preferably, the described wireless signal relay system that can automatically control and monitor, 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 described wireless signal relay system that can automatically control and monitor, is characterized in that power module also comprises the power management chip of 3.3V Voltage-output, for providing radio frequency single-chip microcomputer required operating voltage.
Preferably, the described wireless signal relay system that can automatically control and monitor, is characterized in that the outside high frequency quartz oscillator that connects of radio frequency one-chip computer module.
Preferably, the described wireless signal relay system that can automatically control and monitor, 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 described wireless signal relay system that can automatically control and monitor, is characterized in that the prevention at radio-frequency port of radio frequency one-chip computer module need increase 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 except radio-frequency (RF) power amplification chip, also needing to comprise two channel selector switchs, 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 described wireless signal relay system that can automatically control and monitor, is characterized in that, for detecting load power consumption, need increasing current monitoring module at the normal-closed end of the wireless signal relay system that can automatically control and monitor.
The using method that another object of the present invention is to provide a kind of wireless signal relay system that can automatically control and monitor, is characterized in that said method comprising the steps of:
(1) the power input sub-connection direct supply of the wireless signal relay system that can automatically control and monitor;
(2) can automatically control the relay output end sub-connection load with the wireless signal relay system of monitoring: common port pin is connected load power source, it is anodal that Chang Kaiduan pin or normal-closed end pin connect load;
(3) after the wireless signal relay system that can automatically control and monitor powers on, signal lamp periodically glimmers, and its radio frequency single-chip microcomputer is the state of wireless package in monitoring air always;
(4) if monitor control command package, resolve the content in 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 status poll package, by the current state wireless feedback of relay to remote control center;
(6) if monitor consumption detection package, by load current working current value wireless feedback to remote control center;
(7) if there is abnormal disconnection or closing phenomenon, the wireless signal relay system that can automatically control and monitor will be wirelessly sent to abnormal occurrence remote control center in time, and light alarm lamp.
With respect to scheme of the prior art, advantage of the present invention is: low cost, long transmission distance, penetration capacity are strong, Interface design and upper-layer protocol are relatively simple, are more suitable in far distance controlled signal relay, realize quickly and easily the robotization of terminator is controlled.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the wireless signal relay system structured flowchart that can automatically control and monitor in embodiments of the invention;
Fig. 2 is power module circuitry schematic diagram in embodiments of the invention;
Fig. 3 is radio-frequency (RF) power amplification circuit module schematic diagram in embodiments of the invention;
Fig. 4 is signal relay module controls schematic diagram in embodiments of the invention;
Fig. 5 is the workflow diagram of the wireless signal relay system that can automatically control and monitor in embodiments of the invention;
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for the present invention is described.The implementation condition adopting in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
A kind of wireless signal relay system that can automatically control and monitor of embodiment
As Fig. 1, the wireless signal relay system that can automatically control and monitor of the present embodiment adopts structure as shown in Figure 1, wherein comprises: shell 1, power input terminal 2, relay output end (common port pin 3, Chang Kaiduan pin 4, normal-closed end pin 5, consisting of), pilot lamp, radio frequency one-chip computer module, power module and signal relay module.The shell 1 of the wireless signal relay system that wherein, can automatically control and monitor is of a size of 82*50*32MM.Power input terminal is the green phoenix terminals of 2 PIN, is placed in housing exterior left side, for connecting 24V or 12V direct supply.Relay output end is the green phoenix terminals of 3 PIN, is placed in housing exterior right side, for connecting load.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, is placed in housing exterior left side, and after the wireless signal relay system that can automatically control and monitor powers on, this pilot lamp will be every 2S flicker once.It is green and yellow that status indicator lamp and alarm lamp are respectively, and is all placed in housing exterior right side, and status indicator lamp is lighted and extinguished and represents respectively signal relay closed and disconnected.When there are abnormal conditions, alarm lamp is lighted, and extremely removes alarm pilot lamp and extinguishes.Radio frequency one-chip computer module, power module and signal relay module etc. are all placed in enclosure.
Below wireless measuring illumination system various piece is described in detail:
The power management chip that the power module that the present embodiment adopts comprises 5V Voltage-output, for providing radio-frequency (RF) power amplification required DC voltage, detailed circuit as shown in Figure 2.
In Fig. 2, the characteristic of LM2576 is as follows: 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, 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 n-negative voltage transition device of Buck-Boost formula.
The pin definitions of LM2576 is as follows: 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 is (VIN-VSAT), output LOW voltage is-0.5V; GND-circuit ground; FB-feedback end; ON/OFF-control end, high level is effective, and standby quiescent current is only 75 μ A.
In Fig. 2, C1 is input capacitance, and this electric capacity will select the aluminium of low ESR or tantalum electric capacity as shunt capacitance, prevents from occurring large transient voltage 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 at least 1/2 of DC load electric current; 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 in datasheet is haveed a good look in suggestion, and requiring has 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 for discontinuous type in a switch periods.
C2 is output capacitor, the tantalum electric capacity of the low ESR between 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 to device, cause damage 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 likely make feedback control loop unstable, cause output terminal vibration.This is almost 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, for providing radio frequency single-chip microcomputer required operating voltage 3.3V.
The radio frequency single-chip microcomputer model adopting in the present embodiment radio frequency one-chip computer module is as shown in Figure 3 CC1110F16, and 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 radio-frequency (RF) power amplification circuit module.It is T/R switch 7 and T/R switch 8 that radio-frequency (RF) power amplification circuit module also comprises two channel selector switchs except radio-frequency (RF) power amplification chip, 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, for low-consumption wireless application designs.The enhancement mode 8051MCU that this chip has comprised a standard and a radio transmitting and receiving chip CC1100 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(industry of 915MHz, science and medical science) and SRD(short-range device) frequency band, in ISM band, can freely be set to 300-348 MHz, 391-464 MHz and 728-928 MHz.
CC1110 radio-frequency (RF) transceiver is an integrated highly configurable modulator-demodular unit.This modulator-demodular unit is supported different modulation formats, and its data transmission rate can reach 500kbps.By unlatching, be integrated in the forward error recovery option on modulator-demodular unit, can make performance get a promotion.CC1110 provides hardware supported widely 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 CC1110 radio frequency singlechip chip sleep pattern.Programmable data transfer rate can be as high as 500kBaud, and when speed is 1.2kBaud, CC1110 is under reception and emission mode, and current loss is respectively lower than 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, be particularly suitable for those and require the very long application of battery life.Reach-110dBm of maximum sensitivity, radio frequency power output able to programme is up to 10dBm.
CC1110 chip, as long as only a few peripheral cell just can be built SoC reliable and stable and low in energy consumption, has been simplified the design process of RF circuit greatly.The sensor node of design is operated in 433 MHz frequency ranges.Upper figure is the reference design that CC1110 coordinates radio-frequency (RF) power amplification application, mainly CC1110 chip, radio frequency matching circuit, T/R switch, radio-frequency (RF) power amplification and other peripheral cells, consists of.
The supply voltage of CC1110 is 3.3V, and 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 Balanced or unbalanced conversion.Impedance matching circuit 29 is comprised of L3, L4, C4, C5 and C6, be used for matching chip input, output-resistor, making its input, output-resistor is 50 Ω, meanwhile, 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.T/R switch is used for switching radio frequency sending and receiving, and when sending data packet, T/R switching over, to (T) state of transmission, makes radiofrequency signal realize power amplification through radio-frequency (RF) power amplification (PA); When receiving data packet, T/R switching over is to (R) state of reception, and now radiofrequency signal, without 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 signal relay module is twin coil magnetism holding type DIP relay, model is HFD2/024, it adopts 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.
In figure, CTRL1 and CTRL2 are connected to two I/O ports of radio frequency single-chip microcomputer, when 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 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 is also: if there is abnormal disconnection or closing phenomenon, signal relay module is wirelessly transmitted to remote control center by abnormal occurrence in time, 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 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.
In the present embodiment radio frequency one-chip computer module, drive software is used IAR software platform to write, and the workflow diagram of the wireless signal relay system that can automatically control and monitor as shown in Figure 5.Concrete using method comprises the following steps:
(1) the power input sub-connection direct supply of the wireless signal relay system that can automatically control and monitor;
(2) can automatically control the relay output end sub-connection load with the wireless signal relay system of monitoring: common port pin is connected load power source, it is anodal that Chang Kaiduan pin or normal-closed end pin connect load;
(3) after the wireless signal relay system that can automatically control and monitor powers on, signal lamp periodically glimmers, and its radio frequency single-chip microcomputer is the state of wireless package in monitoring air always;
(4) if monitor control command package, resolve the content in package, and according to its content-control relay closes or disconnection, state indication is lighted and is extinguished and represents respectively relay closes and disconnection;
(5) if monitor status poll package, by the current state wireless feedback of relay to long-range control center;
(6) if monitor consumption detection package, by load current working current value wireless feedback to long-range control center;
(7) if there is abnormal disconnection or closing phenomenon, the wireless signal relay system that can automatically control and monitor is wirelessly transmitted to remote control center by abnormal occurrence in time, and lights alarm lamp.
This processing has a starting point, as shown in piece 9, the power input sub-connection direct supply of the wireless signal relay system that piece 10 expressions can automatically be controlled and monitor, piece 11 expressions can be controlled the relay output end sub-connection load with the wireless signal relay system of monitoring automatically: common port pin is connected 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 wireless signal relay system that next initialization can automatically be controlled and monitor.
After the wireless signal relay system that can automatically control and monitor powers on, signal lamp periodically glimmers, its radio frequency single-chip microcomputer is the state of wireless package in monitoring air always, as shown in piece 17, if monitor control command package, resolve the content in package, as shown in piece 20, and according to its content-control relay closes or disconnection, as shown in piece 24,25, state indication is lighted and is extinguished and represents respectively relay closes and disconnection, as shown in piece 26,27; If monitor status poll package, the current state of relay is carried out to wireless feedback, as shown in piece 21; If monitor consumption detection package, load current working current value is carried out to wireless feedback, as shown in piece 19, piece 22.
If there is abnormal disconnection or closing phenomenon, the wireless signal relay system that can automatically control and monitor as shown in piece 13 is wirelessly transmitted to remote control center by abnormal occurrence in time, as shown in piece 14, and lights alarm lamp; If no exceptions disconnection or closing phenomenon but overtime phenomenon has occurred, as shown in piece 15, signal lamp flicker, as shown in piece 16; If there is overtime phenomenon, do not detect wireless package, as shown in piece 17.
Above-mentioned example is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations that Spirit Essence is done according to the present invention or modification, within all should being encompassed in protection scope of the present invention.
In sum, the invention has the advantages that: the wireless signal relay system that can automatically control and monitor is not only saved cable and quantities, and timely rapidly.Use the free 433MHz ISM band in the whole world, without Internet utilization fee use, also can not be limited by the flow, obstruction of common network etc., and maintenance cost is low.
Claims (1)
1. the wireless signal relay system that can automatically control and monitor, it is characterized in that the described wireless signal relay system that can automatically control and monitor is by shell, power input terminal, relay output end, pilot lamp, 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 for monitoring the state of the wireless package of air, if monitor control command package, resolve the content in package, and according to the closed or disconnection of its content control signal relay module, the closed and disconnected that is represented relay module by status indicator lamp, if radio frequency one-chip computer module monitors status poll package, by the current feedback of status of relay module to remote control center, if monitor consumption detection package, by load current working current value wireless feedback to remote control center, the prevention at radio-frequency port of described radio frequency one-chip computer module connects balun circuit, impedance matching circuit and antenna, prevention at radio-frequency port is also provided with radio-frequency (RF) power amplification circuit module, in radio-frequency (RF) power amplification circuit module, establish radio-frequency (RF) power amplification chip and be used for strengthening transmission range and the penetration capacity of wireless signal, the function of described signal relay module is also: if there is abnormal disconnection or closing phenomenon, signal relay module is wirelessly sent to remote control center by abnormal occurrence in time, and light alarm lamp.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267994A (en) * | 2018-04-18 | 2018-07-10 | 中原工学院 | A kind of fully automatic electric sub-controller based on the identification of foul smell peculiar smell |
| CN110385367A (en) * | 2019-06-28 | 2019-10-29 | 冯胜 | Mold breaks red needle automatic monitoring control system |
| CN111897277A (en) * | 2020-09-18 | 2020-11-06 | 成都飞英思特科技有限公司 | Electric equipment control system |
| CN112444743A (en) * | 2020-11-16 | 2021-03-05 | 娄底职业技术学院 | Automatically-controlled wireless signal relay system |
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2012
- 2012-07-10 CN CN201210238123.XA patent/CN103543670A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267994A (en) * | 2018-04-18 | 2018-07-10 | 中原工学院 | A kind of fully automatic electric sub-controller based on the identification of foul smell peculiar smell |
| CN108267994B (en) * | 2018-04-18 | 2024-04-30 | 中原工学院 | Full-automatic electronic controller based on odor and peculiar smell recognition |
| CN110385367A (en) * | 2019-06-28 | 2019-10-29 | 冯胜 | Mold breaks red needle automatic monitoring control system |
| CN110385367B (en) * | 2019-06-28 | 2024-05-31 | 冯胜 | Automatic monitoring control system for die breaking punch needle |
| CN111897277A (en) * | 2020-09-18 | 2020-11-06 | 成都飞英思特科技有限公司 | Electric equipment control system |
| CN112444743A (en) * | 2020-11-16 | 2021-03-05 | 娄底职业技术学院 | Automatically-controlled wireless signal relay system |
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Application publication date: 20140129 |