CN106696992B - A kind of point type LED intelligence ignition device based on current ring communication - Google Patents

Abstract

The invention discloses a kind of point type LED intelligence ignition device based on current ring communication, including indoor equipment and outdoor equipment；The indoor equipment includes power supply, insurance, filament relay, monitoring host；The outdoor equipment includes LED lamp holder, lighting unit, signaling gear, and LED lamp holder and lighting unit are fixed on inside signaling gear, and lighting unit drives LED lamp holder；It is equipped with electric power loop and information circuits between indoor equipment and outdoor equipment, is connected respectively by feed cable with communication cable；The electric power loop refers to that power supply is connected by insurance, filament relay and feed cable with the lighting unit in outdoor equipment；The information circuits refer to that monitoring host carries out information transmitting by communication cable and lighting unit.The present invention transmits alarm signal by electric current loop, enhances anti-interference ability.Positioning and more lighting unit simultaneous faults alarms are realized in design when passing through difference.Present invention saves installation spaces, the volume for reducing itself, facilitate construction, the transformation at scene.

Description

A kind of point type LED intelligence ignition device based on current ring communication

Technical field

The invention belongs to railway signal technology fields, are related to a kind of point type LED intelligence lighting dress based on current ring communication It sets.

Background technique

Lighting system is most common ground signal in railway signal, it mainly by lamp cap, lighting unit, signaling gear, Filament relay, monitoring host composition.Current existing lighting system has the following problems: the communications of lighting system are generally sharp Realize that monitoring, alarming function, the impulse waveform of this mode are easy abnormal in such a way that alarming line transmits information with relay tip Become, poor anti jamming capability；The equipment of Machine Room is typically placed on the synthesis equipment cabinet with combobar, and current monitoring host It is both placed in comprehensive support to add, one layer of bracket, which is equivalent to, occupies two layers of combobar position, and this modes of emplacement is that newly-built line is mechanical Equipment arrangement in room is made troubles, and cost of investment is increased, especially in both wired reconstructions, when Machine Room not there are bracket combination or When bracket combination places inconvenient, monitoring host can not be installed at all, this is that site operation and equipment are promoted, and is brought greatly It is inconvenient；Monitoring host and the setting of lighting unit address matching need to reserve download interface, and be equipped with downloader, and general downloader is The smallclothes device being of little use, but site environment is complicated, personnel are various, brings not for the practical operation at scene and the preservation of accessory Just, especially in handling failure, be difficult quickly, timely find downloader, delay inquiry fault time；Monitoring system does not consider The processing of more than two scene lighting unit simultaneous faults, can not accurately orient the specific location of trouble light, can not achieve More lighting unit simultaneous faults alarms.Therefore, according to the status of lighting system existing equipment, it is necessary to which research and development adapt to new shape The lighting system of gesture, to solve original defect.

Summary of the invention

Present invention solves the problem in that providing a kind of point type LED intelligence ignition device based on current ring communication, solve Lighting system presently, there are the problem of, provided conveniently for the construction of lighting system at the scene, enhance lighting system at the scene The practicability of application, convenience, safety and reliability.

The present invention is to be achieved through the following technical solutions:

A kind of point type LED intelligence ignition device based on current ring communication, including indoor equipment and outdoor equipment；Described Indoor equipment includes power supply, insurance, filament relay, monitoring host；The outdoor equipment include LED lamp holder, lighting unit, Signaling gear, LED lamp holder and lighting unit are fixed on inside signaling gear, and lighting unit drives LED lamp holder；Indoor equipment and room It is equipped with electric power loop and information circuits between external equipment, is connected respectively by feed cable with communication cable；The power supply returns Road refers to that power supply is connected by insurance, filament relay and feed cable with the lighting unit in outdoor equipment；The information Circuit refers to that monitoring host carries out information transmitting by communication cable and lighting unit.

The monitoring host and lighting unit uses current ring communication mode: when lighting unit has current alarm signal production When raw, current alarm signal is converted and is transmitted through lighting unit current loop circuit, communication cable, monitoring host current loop circuit To the processing of monitoring host SCM, display；When monitoring host current loop circuit has the generation of receipt current signal, monitoring host is returned Current signal is held by communication cable, lighting unit current loop circuit, converts and is transmitted to lighting unit single-chip microcontroller, terminate lighting The transmission of cell current alarm signal.

When the transmission of current loop no signal current, monitoring host current loop circuit, which is in, waits reception state, lighting Cell current loop circuit is in standby；When lighting unit generates current alarm signal, lighting unit is converted to transmission shape State, every to have sent primary current alarm signal, lighting unit enters waiting reception state, and it is waiting that monitoring host is temporarily in etc. Receipts state；When monitoring the current alarm signal that host identifies that lighting unit is sent, current alarm signal information is converted into Host discernible signal is monitored, while monitoring host and converting to transmission state and send back and hold current signal, monitors the every hair of host A receipt current signal is sent, monitoring host enters waiting reception state；When lighting unit identifies receipt current signal Afterwards, lighting unit enters standby mode.

The current loop circuit of the monitoring host includes monitoring host power supply circuit, monitoring host lightning protection circuit, monitoring Host transmitting line, monitoring host receive circuit and monitoring host waveform calibrates circuit；Monitoring host transmitting line includes monitoring Host sends isolation circuit and monitoring host sending controling circuit；Monitoring host and receiving circuit includes that monitoring host receives isolation electricity Road and monitoring host receive control circuit；Lighting unit current loop circuit includes lighting unit lightning protection circuit, lighting unit transmission Circuit, lighting unit receive circuit and lighting unit waveform calibrates circuit；Lighting unit transmitting line includes that lighting unit is sent Isolation circuit and lighting unit sending controling circuit；It includes that lighting unit receives isolation circuit and lighting that lighting unit, which receives circuit, Unit receives control circuit.

The positioning failure alarm simultaneously of more lighting units is realized in design when communication protocol passes through difference.When lighting unit is led After secondary light source switching, lighting unit communication board works on power, and the single-chip microcontroller of lighting unit communication board is read a little first Lamp unit extension set coding is encoded by lighting unit extension set and obtains a random number as delay time；Then lighting unit is logical The timer of letter plate single-chip microcontroller, using this random number as overflow value trigger, after the completion of delay, sends alarm signal since 0 Breath, and timer clear 0, it starts waiting to receive monitoring host receipt signal；After receiving receipt signal, then terminate this time to send out It send；If not receiving receipt signal, timer is reset again from " when obtaining a random number as delay by extension set coding Between " at start to judge, repeat program.Monitoring host such as is at the state of signal to be received when not having an alarm signal；Work as prison First identify whether when surveying host by alarm signal for useful signal, if not then continuing waiting for receiving, if useful signal is then It display alarm information and sends back on a display screen and holds current signal；It continues waiting for receiving alarm after having sent receipt current signal Signal directly transmits receipt signal if receiving identical alarm signal and then skipping the link of display, if receiving different reports Alert signal, which then shows and sends back, holds signal；Monitoring host repeats the process of identification, display, transmission.The benefit done so That different transmission initial times is distributed to each lighting unit extension set, avoid more lighting unit extension sets to monitoring host simultaneously Sending information causes electric current loop can not normal communication.

Compared with prior art, the invention has the following beneficial technical effects:

1) the communication alert mode for redesigning monitoring transmits alarm signal by electric current loop, enhances anti-interference ability.

2) positioning and more lighting unit simultaneous faults alarms are realized in design when passing through difference.

3) monitoring can be placed in lighting system in combobar, will monitoring host by being placed on comprehensive support plus being changed to put In combobar, two safety relay positions are occupied；Monitoring host in this way uses method for installing relay, and it is empty to save installation Between, reduce itself volume, facilitate construction, the transformation at scene.

4) monitoring host is changed to touch screen and show, is not required to separately match downloader, facilitates execute-in-place, certainly.

5) lighting unit structure uses the design method of copper column supercircuit plate, reduces lighting unit volume, improves Space utilization rate.

6) lighting unit warning circuit uses paranema power supply, is truly realized being isolated for governor circuit and warning circuit, Make the normal work for not influencing governor circuit when warning circuit failure.

7) capacitor fictitious load mode is used, fictitious load calorific value is reduced, improves product service life.

Detailed description of the invention

Fig. 1 is overall schematic of the invention；

Fig. 2 is monitoring host complete machine functional block diagram；

Fig. 3 is monitoring host power supply plate functional block diagram；

Fig. 4 is monitoring host master control borad functional block diagram；

Fig. 5 is monitoring main-machine communication plate functional block diagram；

Fig. 6 is monitoring host lighting protection plate functional block diagram；

Fig. 7 is lighting unit complete machine functional block diagram；

Fig. 8 is lighting unit power circuit principle block diagram；

Fig. 9 is lighting unit governor circuit functional block diagram；

Figure 10 is monitoring host current loop circuit schematic diagram；

Figure 11 is lighting unit current loop circuit schematic diagram；

Figure 12 is monitoring host electric current loop software flow pattern；

Figure 13 is lighting unit electric current loop software flow pattern；

Figure 14 is that monitoring host machine adds structure chart；

Figure 15 is that lighting unit machine adds structure chart.

Specific embodiment

Below with reference to specific case study on implementation, the present invention is described in further detail, and described is explanation of the invention Rather than it limits.

Present invention solves the problem in that providing, one kind transmitting communication mode by hardware current and software flow designs Improve the telecommunication circuit design of communication anti-interference capability；Monitoring host is changed to be placed on combobar by being placed on to integrate to hold in the palm to add On, occupy two safety relay positions；Design of hardware and software is changed, increases and touches setting function, do not match downloader separately；It is main logical Positioning and more lighting unit simultaneous faults alarms are realized in design when crossing software difference.

Referring to Fig. 1, a kind of point type LED intelligence lighting system of applied current ring communication, including indoor equipment and outdoor are set It is standby；The indoor equipment has two transmission circuits, and first transmission circuit is that AC alternating current 220V power supply passes through insurance 8, filament Relay 6 is carrier by power delivery to outdoor equipment with feed cable 4；Another transmission circuit of the indoor equipment is The communication information is that carrier transmits a signal to monitoring host 7 with communication cable 5；The outdoor equipment has two transmission circuits, It is carrier by power delivery to lighting unit 3 that first transmission circuit, which is AC alternating current 220V power supply with feed cable 4,；The room It is that carrier transmits a signal to lighting unit 3 that another transmission circuit of external equipment, which is the communication information with communication cable 5,；

Referring to fig. 2, the monitoring host mainly includes power supply, single-chip microcontroller, display screen and current loop circuit；Power supply is to list Piece machine, display screen and current loop circuit provide electric power support.

Referring to Fig. 3, transformation isolation circuit, 24V out-put supply, two-way voltage-stabilizing are provided on the monitoring host power supply plate Output, alarm relay power supply, communication power supply, 5V out-put supply, connector interconnecting module is isolated；Transformation isolation circuit is through 24V Out-put supply is connect with connector interconnecting module；Two-way voltage-stabilizing isolation output is separately connected alarm relay power supply and 5V output Electricity, alarm relay power supply are connect through communication power supply with connector interconnecting module.

Referring to fig. 4, it is provided with STM32F core on the monitoring host master control borad, and coupled respectively patched Part interconnecting module, 485 interfaces, CAN interface, audible alarm unit, clock circuit, 3.3V out-put supply, LCD display interface；485 Interface, CAN interface are also connected with connector interconnecting module respectively.

Referring to Fig. 5, monitoring the first current loop circuit of host, monitoring host second are provided on the monitoring main-machine communication plate Current loop circuit, monitoring the 4th current loop circuit of host, alarm relay circuit, patches monitoring host third current loop circuit Part interconnecting module；

Referring to Fig. 6, the first observation circuit vertically and horizontally lightning protection circuit, the second monitoring are provided on the monitoring host lighting protection plate Circuit vertically and horizontally lightning protection circuit, third observation circuit vertically and horizontally lightning protection circuit, the 4th observation circuit vertically and horizontally lightning protection circuit, power supply Input vertically and horizontally lightning protection circuit.

Referring to Fig. 7, the lighting unit 3 include power management module, main control singlechip, main Control point lamp detection module, Adjacent modules, communication alarming single-chip microcontroller, communication alarming module；Communication alarming single-chip microcontroller carries out signal by communication alert module Transmitting-receiving, main control singlechip are connected with power management module, adjacent modules, main Control point lamp detection module.Main Control point lamp detection module Including king light voltage detecting, secondary modulating voltage detection, king light power detecting, secondary lamp power detecting, low voltage starting detection and light detection.

Referring to Fig. 8, lighting transformer, the first rectifying and wave-filtering, the second rectifying and wave-filtering, filament are provided on power management module Switching relay two-way contact, LM2576 pressure stabilizing, LM7805 pressure stabilizing, common mode inductance filtering, communication board power supply, pulse transformer electricity Source, main control singlechip power supply, lamp cap power supply.Using capacitor fictitious load mode, fictitious load calorific value is reduced, improves product Service life.

Referring to Fig. 9, main Control point lamp detection module will test signal and be sent to main control singlechip, main control singlechip analysis processing Detection signal simultaneously controls the first Phototube Coupling, the second Phototube Coupling and third Phototube Coupling being in parallel respectively；First photoelectricity every It is connected from metal-oxide-semiconductor field effect transistor actuating circuit；It is negative that second Phototube Coupling is sequentially connected pulse transformer, current rectifying and wave filtering circuit and vacation Carry actuating of relay circuit；Third Phototube Coupling is connected with filament transfer relay actuating circuit；Power module passes sequentially through MOS Field-effect tube actuating circuit, fictitious load actuating of relay circuit, filament transfer relay and king light constant current source driving circuit or Secondary lamp constant current source driving circuit；King light constant current source driving circuit drives king light LED load, and secondary lamp constant current source driving circuit driving is secondary Lamp LED load；Lighting unit warning circuit uses paranema power supply, is truly realized being isolated for governor circuit and warning circuit, Make the normal work for not influencing governor circuit when warning circuit failure；

Below to further instruction of the present invention.

About monitoring host

A) monitoring host is not placed on pallet, is mounted in combobar by Relay base.

The equipment of Machine Room is typically placed on the synthesis equipment cabinet with combobar, and current monitoring host is both placed in On comprehensive bracket, one layer of bracket occupies two layers of combobar position, and this modes of emplacement is that equipment arrangement in Machine Room is made troubles, especially It is can not to install monitoring host at all, this is applied for scene not there are when bracket or inconvenient bracket setting on comprehensive equipment cabinet Work and equipment are promoted, and very big inconvenience is brought.

Monitoring host is designed as relay system mounting means, not only solves the inconvenient problem of equipment arrangement, and not Needing to be modified original equipment cabinet can be plugged on monitoring host on Relay base, facilitate site operation and device Material is promoted.

Machine adds structure to be 3 pieces of printed circuit boards installed in parallel and one piece of vertically arranged printed circuit inside monitoring host Plate is connected with connector with bronze gong column supporting way hardness, such mounting means, makes 4 pieces of printed circuit boards from integral, knot Structure is reliable and stable, greatly saves installation space, makes to monitor 2 safety relay spaces of host occupancy, this to supervise Survey host is mounted on the design method in combobar by Relay base and is achieved.

B) increase touch LCD screen.

Monitoring host increases touch LCD screen, and design so not only eliminates key and saves inner space, Er Qiezhi Downloader can be eliminated with operative configuration lighting unit address by connecing, and solved and be difficult under quick, timely find in handling failure The problem of carrying device, delaying inquiry fault time.

C) realization of locating alarming function.

The physical address (passing through toggle switch) of itself can be set in every lighting unit, and monitoring host again can be to lighting The address of unit is encoded, that is, realizes the positioning to lighting unit.When lighting unit, which breaks down, alarms, host is monitored Where can accurately show failure generation, facilitate the timely handling failure of maintenance personal.

D) Duo Taitong alarm.

When have more lighting units and meanwhile break down alarm when, monitoring host can be according to the communication protocol of itself to hair The alarm signal rapid answer one by one come, realizes more lighting units with the function of alarm.

E) current ring communication.

The communication monitored between host and lighting unit uses electric current loop mode.Current ring communication has good anti-interference Ability effectively prevents the case where wrong report is misrepresented deliberately.Electric current loop mainly includes communication power supply, receives circuit, transmitting line 3 Point.

Energy needed for communication power supply part is used to provide communication to electric current loop；Circuit is received for receiving on electric current loop Current signal, and it is converted into the TTL voltage signal that single-chip microcontroller can identify；Transmitting line is for sending microcontroller serial port Signal out is converted to current signal on electric current loop.

About lighting unit

A) structure.

Since the volume of lighting unit is limited by Mechanism chamber space, so the structure design of lighting unit uses copper column The mode of supercircuit plate designs, and thus reduces the volume of lighting unit, improves the utilization rate in space.

B) paranema is powered.

When the main silk failure of lighting unit, lighting is switched power supply into paranema, while communication board starts to power and issue report Alert news breath so that alarm realized with failure it is temporal synchronous.

C) capacitor fictitious load.

Electric current is smaller when lighting unit works, therefore increases capacitor fictitious load and improve lighting unit operating current.Using capacitor As fictitious load without being because the calorific value of capacitor is smaller using resistive load, service life is longer.

Current loop circuit is further illustrated below.

Referring to Figure 10, Figure 11, the current loop circuit for monitoring host includes monitoring host power supply circuit, monitoring host thunder-lightning Road, monitoring host transmitting line, monitoring host receives circuit and monitoring host waveform calibrates circuit；Monitor host transmitting line packet It includes monitoring host and sends isolation circuit and monitoring host sending controling circuit；Monitoring host and receiving circuit includes that monitoring host receives Isolation circuit and monitoring host receive control circuit；

Lighting unit current loop circuit includes lighting unit lightning protection circuit, lighting unit transmitting line, lighting unit reception Circuit and lighting unit waveform calibrate circuit；Lighting unit transmitting line includes that lighting unit sends isolation circuit and lighting unit Sending controling circuit；It includes that lighting unit receives isolation circuit and lighting unit reception control circuit that lighting unit, which receives circuit,.

During current ring communication, two kinds of current signals are transmitted, one kind is current alarm signal, and one kind is that receipt electric current is believed Number.Current alarm signal is a kind of alarm square-wave signal that lighting unit is sent, when lighting unit fault alarm, by lighting list Elementary current ring transmitting line sends current alarm signal square-wave pulse；Receipt current signal is a kind of receipt for monitoring host and sending Square-wave signal sends receipt electric current by monitoring host electric current loop transmitting line when monitoring host receives current alarm signal Signal square-wave pulse.

Monitoring host and lighting unit can be at four kinds of states, send state, reception state, wait reception state, is standby State.Transmission state monitors host current loop circuit or lighting unit current loop circuit is in and sends square-wave pulse state；It connects Receipts state is to monitor host current loop circuit or lighting unit current loop circuit in the state for receiving square-wave pulse；Etc. to be received State is to monitor host current loop circuit or lighting unit current loop circuit in the state for waiting reception square-wave pulse；Standby shape State refer to lighting unit do not power on do not work or alarm after idle state.

Specifically, monitoring host power supply circuit includes the diode D1, diode D1 that anode is connected with input power VSS Cathode, one end of capacitor C1, one end of capacitor C3, diode D2 cathode and monitoring I port phase of host power supply circuit U1- Even, monitoring II port host power supply circuit U1-, the anode of diode D2, resistance R1 one end be connected with one end of capacitor C2, it is electric Hinder the other end of R1, the other end of capacitor C2, monitoring III port host power supply circuit U1-, one end of resistance R2, capacitor C1 it is another One end is connected with the port F1 of monitoring host lightning protection circuit, and the other end of capacitor C3 is connected with the other end of resistance R2；

Monitoring host lightning protection circuit includes the port resistance F1 being in parallel and the port resistance F2, one end of the port F1 and monitoring III port host power supply circuit U1- is connected, and the other end of the port F1 is connected with the port inductance L1-1, the port inductance L1-2 and first Current loop is connected, and the port inductance L1-4 is connected with the second current loop, one end of the port F2 with monitor host transmission every D3-1 from circuit is connected, and the other end of the port F2 is connected with the port inductance L1-3；

Monitoring host transmitting line includes that monitoring host sends isolation circuit and monitoring host sending controling circuit；Monitoring master It includes the diode group D3 that concatenation is constituted that machine, which sends isolation circuit, wherein diode D3-1 and the monitoring port host lightning protection circuit F2 One end be connected, diode D3-2 is connected with GND1, monitors main diode D3-3 and is connected with one end of load resistance R3, loads electric The other end, the monitoring host of resistance R3 sends the port isolation circuit U4-4 and is connected with the monitoring host transmission port isolation circuit U3-4, Monitoring host sends the port isolation circuit U4-3, monitoring host sends the port isolation circuit U3-3 and is connected with diode D3-4；

Monitoring host sending controling circuit includes the transmitting line control signal TXD1 being connected with one end of resistance R7, amplification The base stage of device Q1, the anode of diode D4, resistance R6 one end be connected with the other end of resistance R7, the collector of amplifier Q1, The cathode of diode D4 is connected with one end of resistance R8, the other end of resistance R8, one end of capacitor C6 and monitoring host master control electricity Source VCC is connected, and the other end of capacitor C6 is connected with the GND for monitoring host master control power supply, the emitter of amplifier Q1, resistance R5 One end, the monitoring port host sending controling circuit U4-1 are connected with the monitoring port host sending controling circuit U3-1, resistance R6's The other end, the other end of resistance R5, the monitoring port host sending controling circuit U4-2, the monitoring end host sending controling circuit U3-2 Mouth is connected with the GND of monitoring host master control power supply；

It includes that the monitoring host being connected with one end of load resistance R3 receives isolation circuit that monitoring host, which receives isolation circuit, The port U2-1, monitoring host receive the port isolation circuit U2-2 and are connected with the other end of load resistance R3；

Monitor host and receive circuit: monitoring host receives the port control circuit U2-4, one end of capacitor C4 and monitoring host Master control power supply VCC is connected, and the other end of capacitor C4 is connected with monitoring host master control power supply GND, and monitoring host receives control circuit The port U2-3, one end of resistance R4, capacitor C5 one end be connected with output signal Rec1, the other end of resistance R4, capacitor C5 The other end is connected with monitoring host master control power supply GND；

Monitoring host waveform calibrates circuit: output signal Rec1 is connected with the monitoring host waveform calibration port circuit U 5-2, Monitoring host waveform calibration circuit U 5-1, control signal DIR are connected with one end of resistance R8, and the other end of resistance R8 and monitoring are led Owner controls power supply GND and is connected, the monitoring host waveform calibration port circuit U 5-14, one end of capacitor C7 and monitoring host master control electricity Source VCC is connected, and the other end of capacitor C7 is connected with monitoring host master control power supply GND, monitoring host waveform calibrate circuit U 5-7 and It monitors host master control power supply GND to be connected, the monitoring host waveform calibration port circuit U 5-3, one end of resistance R9 and output signal RXD1 is connected, and the other end of resistance R9 is connected with monitoring host master control power supply GND.

Lighting unit lightning protection circuit includes the port resistance F11 being in parallel and the port resistance F21, one end of the port point F11 It sends isolation circuit diode D31-2 with lighting unit to be connected, the other end of the port F11 is connected with the port inductance L11-1, inductance The port L11-2 is connected with the second current loop, and the port inductance L11-4 is connected with the first current loop, one end of the port F21 It sends isolation circuit diode D31-1 with lighting unit to be connected, the other end of the port F21 is connected with the port inductance L11-3；

It includes the lighting unit hair that is connected with one end of the port lighting unit lightning protection circuit F21 that lighting unit, which sends isolation circuit, Isolation circuit diode D31-1, diode D31-2 is sent to be connected with one end of the lighting unit hair port lightning protection circuit F11, D31-3 It is connected with one end of load resistance R31, the other end of load resistance R31, the port U41-4 are connected with the port U31-4, the end U41-3 Mouth, the port U31-3 are connected with diode D31-4；

Lighting unit sending controling circuit includes the transmitting line being connected with one end of lighting unit sending controling circuit R71 Signal TXD11 is controlled, the base stage of amplifier Q11, the anode of diode D41 are connected with the other end of resistance R71, amplifier Q11 Collector, diode D41 cathode be connected with one end of resistance R81, the other end of resistance R81, one end of capacitor C61 and point Lamp unit master control power supply VCC is connected, and the other end of capacitor C61 is connected with the GND of lighting unit master control power supply, amplifier Q11's Emitter, one end of resistance R61, one end of resistance R51, the lighting unit port sending controling circuit U41-1 and lighting unit are sent out The port control circuit U31-1 is sent to be connected, the other end of resistance R61, the other end of resistance R51, lighting unit sending controling circuit The port U41-2, the lighting unit port sending controling circuit U31-2 are connected with the GND of lighting unit master control power supply；

It includes the lighting unit reception isolation circuit that is connected with one end of load resistance R31 that lighting unit, which receives isolation circuit, The port U21-1, lighting unit receive the port isolation circuit U21-2 and are connected with the other end of load resistance R31；

Lighting unit receives control circuit: lighting unit receives control circuit U21-4, one end of capacitor C41 and lighting list First master control power supply VCC is connected, and the other end of capacitor C4 1 is connected with lighting unit master control power supply GND, and lighting unit receives control The port circuit U 21-3, one end of resistance R41, capacitor C51 one end be connected with output signal Rec1, the other end of resistance R41, The other end of capacitor C51 is connected with lighting unit master control power supply GND；

Lighting unit waveform calibrates circuit: output signal Rec1 signal and lighting unit waveform calibrate the port circuit U 51-2 It is connected, the lighting unit waveform calibration port circuit U 51-1, control signal DIR are connected with one end of resistance R81, and resistance R81's is another One end is connected with lighting unit master control power supply GND, lighting unit waveform calibrate the port circuit U 51-14, capacitor C71 one end with Lighting unit master control power supply VCC is connected, and the other end of capacitor C71 is connected with lighting unit master control power supply GND, lighting unit waveform The calibration port circuit U 51-7 is connected with lighting unit master control power supply GND, and lighting unit waveform calibrates the port circuit U 51-3, resistance One end of R91 is connected with output signal RXD1, and the other end of resistance R91 is connected with lighting unit master control power supply GND.

The course of work of current ring communication is as follows: when the transmission of entire current loop no signal current, monitoring at host In waiting reception state, lighting unit is in standby；When lighting unit generates current alarm signal, lighting unit conversion Every to have sent primary current alarm signal to the state of transmission, lighting unit enters waiting reception state, and monitoring host is temporarily located In waiting reception state；When alarm signal is transmitted to monitoring host, monitoring host is in reception state；When monitoring host identification When the current alarm signal that lighting unit is sent out, monitoring host enters transmission state, sends receipt current signal, monitors host Every to have sent a receipt current signal, monitoring host enters waiting reception state, and it is to be received that lighting unit is temporarily in etc. State；When alarm signal is transmitted to lighting unit, lighting unit is in reception state；When lighting unit identifies receipt electric current After signal, lighting unit enters standby mode, stops sending and receiving.

Current alarm signal transmission process: when the current alarm signal for thering is lighting unit to send in current loop, point The input TXD1 of lamp unit sending controling circuit is alert data, and alert data passes through the R71 of lighting unit sending controling circuit Driving lighting unit sending controling circuit Q11 makes its on-off, and lighting unit master control power supply VCC sends control electricity by lighting unit Road R81, lighting unit sending controling circuit Q11 drive lighting unit transmitting line U41, lighting unit transmitting line U31 on-off, Alert data is loaded into current loop；

When the current alarm signal for having lighting unit to send in current loop, lighting unit, which receives circuit and is in, to be forbidden Receive state；

When the current alarm signal for thering is lighting unit to send in current loop, host sending controling circuit TXD1 is monitored In high level, high level is connected by the R7 driving monitoring host sending controling circuit Q1 of monitoring host sending controling circuit, Host master control power supply VCC is monitored by monitoring host sending controling circuit R8, monitoring host sending controling circuit Q1 driving monitoring Host transmitting line U4, monitoring host transmitting line U3 conducting, communication section current loop；

When the current alarm signal for having lighting unit to send in current loop, monitoring host power supply circuit is electric current loop Circuit provides power supply, and power supply is by the F1 of monitoring host lightning protection circuit, the L1 for monitoring host lightning protection circuit, monitoring the first electricity of host Flow loop back path, the first current loop of lighting unit, lighting unit lightning protection circuit L11, lighting unit lightning protection circuit F21, lighting Unit sends isolation circuit D31-1, lighting unit sends isolation circuit D31-3, lighting unit load resistance R31, lighting unit It sends isolation circuit U41-4 and lighting unit sends isolation circuit U31-4, lighting unit sends isolation circuit U41-3 and lighting Unit sends isolation circuit U31-3, lighting unit sends isolation circuit D31-4, lighting unit sends isolation circuit D31-2, point Lamp unit lightning protection circuit F11, lighting unit lightning protection circuit L11, lighting unit current loop 21, monitoring the second electric current loop of host Circuit, the L1 for monitoring host lightning protection circuit, the F2 for monitoring host lightning protection circuit, monitoring host send isolation circuit D3-1, monitoring Host sends isolation circuit D3-3, monitoring host receives isolation circuit U2-1, monitoring host receives isolation circuit U2-2, monitoring master Machine sends isolation circuit U4-4 and monitoring host sends isolation circuit U3-4, monitoring host sends isolation circuit U4-3 and monitoring master Machine sends isolation circuit U3-3, monitoring host sends isolation circuit D3-4, monitoring host sends isolation circuit D3-2, monitoring host Send isolation circuit GND1；

When the current alarm signal for having lighting unit to send in current loop, monitoring host receives circuit from electric current loop The current alarm signal received in circuit receives isolation circuit U2 by monitoring host and is converted into Rec1 output signal, using Output RXD1 signal is sent into monitoring host SCM after monitoring the calibration circuit calibration of host waveform.

Receipt current signal transmission process: when there is the receipt current signal of monitoring host in current loop, monitoring master The input TXD1 of machine sending controling circuit is receipt data, and receipt data drive prison by the R7 of monitoring host sending controling circuit Surveying host sending controling circuit Q1 makes its on-off, and monitoring host master control power supply VCC is by monitoring host sending controling circuit R8, prison Host sending controling circuit Q1 driving monitoring host transmitting line U4, monitoring host transmitting line U3 on-off are surveyed, receipt data add It is downloaded to current loop；

When there is the receipt current signal of monitoring host in current loop, monitoring host, which receives circuit and is in, to be forbidden receiving State；

When there is the receipt current signal of monitoring host in current loop, lighting unit sending controling circuit TXD1 is in High level, R71 driving lighting unit sending controling circuit Q11 conducting of the high level by lighting unit sending controling circuit, point Lamp unit master control power supply VCC drives lighting by lighting unit sending controling circuit R81, lighting unit sending controling circuit Q11 Unit transmitting line U41, lighting unit transmitting line U31 conducting, communication section current loop；

When there is the receipt current signal of monitoring host in current loop, monitoring host power supply circuit is current loop circuit Power supply is provided, power supply is by the F1 of monitoring host lightning protection circuit, the L1 for monitoring host lightning protection circuit, monitoring the first electric current loop of host Circuit, the first current loop of lighting unit, lighting unit lightning protection circuit L11, lighting unit lightning protection circuit F21, lighting unit Send isolation circuit D31-1, lighting unit sends isolation circuit D31-3, lighting unit receives isolation circuit U21-1, lighting list Member receives isolation circuit U21-2, lighting unit sends isolation circuit U41-4 and lighting unit sends isolation circuit U31-4, lighting Unit sends isolation circuit U41-3 and lighting unit sends isolation circuit U31-3, lighting unit sends isolation circuit D31-4, point Lamp unit sends isolation circuit D31-2, lighting unit lightning protection circuit F11, lighting unit lightning protection circuit L1, the second electricity of lighting unit Flow loop back path, monitoring the second current loop of host, the L1 for monitoring host lightning protection circuit, the F2 for monitoring host lightning protection circuit, prison It surveys host and sends isolation circuit D3-1, monitoring host transmission isolation circuit D3-3, monitoring load on host computers resistance R3, monitoring host hair Isolation circuit U4-4 and monitoring host is sent to send isolation circuit U3-4, monitoring host transmission isolation circuit U4-3 and monitoring host hair Isolation circuit U3-3, monitoring host is sent to send isolation circuit D3-4, monitoring host sends isolation circuit D3-2, monitoring host is sent Isolation circuit GND1；

When there is the receipt current signal of monitoring host in current loop, lighting unit receives circuit from current loop In the electric current receipt signal that receives receive isolation circuit U21 by lighting unit and be converted into Rec1 output signal, using point Output RXD1 signal is sent into lighting unit communication alarming single-chip microcontroller after lamp unit waveform calibrates circuit calibration.

Referring to Figure 12, Figure 13, the positioning failure alarm simultaneously of more lighting units is realized in design when the present invention passes through difference.Work as a little After the switching of major-minor light source occurs for lamp unit, lighting unit communication board works on power, the monolithic of lighting unit communication board Prow first reads lighting unit extension set coding, is encoded by lighting unit extension set and obtains a random number as delay time；So Afterwards the timer of lighting unit communication board single-chip microcontroller since 0 using this random number as overflow value trigger, after the completion of delay, Warning message is sent, and timer clear 0, starts waiting to receive monitoring host receipt signal；After receiving receipt signal, then tie Beam is this time sent；If not receiving receipt signal, timer is reset again from " by one random number work of extension set coding acquisition For delay time " at start to judge, repeat program.Monitoring host such as is at the shape of signal to be received when not having an alarm signal State；First identify whether when monitoring host by alarm signal for useful signal, if not then continuing waiting for receiving, if effectively Signal then display alarm information and sends back on a display screen and holds current signal；It continues waiting for connecing after having sent receipt current signal Alarm signal is received, receipt signal is directly transmitted if receiving identical alarm signal and then skipping the link of display, if receiving not Same alarm signal, which then shows and sends back, holds signal；Monitoring host repeats the process of identification, display, transmission.It does so Benefit be that different transmission initial times is distributed to each lighting unit extension set, avoid more lighting unit extension sets to monitoring lead Machine sends information simultaneously and causes electric current loop can not normal communication.

It referring to Figure 14, monitors host 7 and uses method for installing relay, the volume saved installation space, reduce itself is convenient Construction, the transformation at scene；Monitoring host include shell 11, display screen 12, switching circuit board 13, main control board 14, connection it is attached Part 15, insulation board 24, hangs angle 19, electricity at be connected terminal 16, backplane circuit plate 17, bottom cover 18, insulating base 19, spring washer and nut 23 Source blade unit 25, M4 screw rod and nut 20, power supply circuit board 21, communication board 22；Main control board 14 and communication board 22 are connected by connector, and are fixed with copper stud；Main control board 14 and communication board 22 are entirely through communication board Connector on 22 is connected with backplane circuit plate 17, and is fixed with turning；Power supply circuit board 21 passes through connector and backplane circuit Plate 17 is connected and is fixed with turning, is in addition also fixed with communication board 22 with copper stud；Switching circuit board 13 passes through connector It is connected with main control board 14, display screen 12 is welded on switching circuit board 13；Extension angle, power supply blade unit 25, screw form Relay terminal is welded on backplane circuit plate 17；Insulation board 24 is mounted on the outside of relay terminal；M6 screw, M6 plain cushion, M6 spring washer and nut 23 fix bottom cover 18 and relay together；Pass through M4 screw rod and nut between shell 11 and bottom cover 18 20 are fixedly linked；Monitoring host is integrally plugged on insulating base 19 fixed.

Referring to Figure 15,3 structure of lighting unit uses the design method of copper column supercircuit plate, reduces lighting unit body Product, improves space utilization rate；Lighting unit includes shell 31, transformer 32, capacitor 33, communication board 34, associated electronic circuitry Plate 35, curved row's needle 36, toggle switch 37, dial window 38, copper packing column 39, screw and spring washer 40, bottom cover 42, are put down at copper packing column 41 Gasket and spring washer 43, main control board 47, ten thousand can terminal 44, M3 flat shim and nuts 45；Transformer 32, capacitor 33, copper packing column 39 are fixed on bottom cover 42；Main control board 47 is fixed on copper packing column 39, and passes through curved row's needle 36 and 35 phase of associated electronic circuitry plate Even, toggle switch 37 is welded on associated electronic circuitry plate 35；Communication board 34 is plugged on associated electronic circuitry plate 35, and electric with master control It is fixedly linked between road plate 47 by copper packing column 41；Shell 31 is fixed by screws in together with bottom cover 42, ten thousand can terminal 44 can It is plugged in communication board 34 with the opening by shell 31, lighting unit can be encoded by dial window 38.

Example given above is to realize the present invention preferably example, and the present invention is not limited to the above embodiments.This field Technical staff's technical solution according to the present invention technical characteristic any nonessential addition, the replacement made, belong to this The protection scope of invention.

Claims (8)

1. a kind of point type LED intelligence ignition device based on current ring communication, which is characterized in that set including indoor equipment and outdoor It is standby；The indoor equipment includes power supply (9), insurance (8), filament relay (6), monitoring host (7)；The outdoor equipment Including LED lamp holder (1), lighting unit (3), signaling gear (2), LED lamp holder (1) and lighting unit (3) are fixed on signaling gear (2) internal, lighting unit (3) drives LED lamp holder (1)；It is equipped with electric power loop between indoor equipment and outdoor equipment and information is returned Road is connected by feed cable (4) with communication cable (5) respectively；The electric power loop is that power supply (9) pass through insurance (8), lamp Silk relay (6) and feed cable (4) are connected with the lighting unit (3) in outdoor equipment；The information circuits are monitoring Host (7) carries out information transmitting by communication cable (5) and lighting unit (3)；

The monitoring host (7) and lighting unit (3) uses current ring communication mode: when lighting unit (3) has electric current alarm When signal generates, current alarm signal becomes through lighting unit current loop circuit, communication cable (5), monitoring host current loop circuit It changes and is transmitted to monitoring host (7) processing, display；

When monitoring host current loop circuit has the generation of receipt current signal, monitoring host receipt current signal passes through communication cable (5), lighting unit current loop circuit converts and is transmitted to lighting unit single-chip microcontroller, terminates lighting cell current alarm signal It sends；

When the transmission of current loop no signal current, monitoring host current loop circuit, which is in, waits reception state, lighting unit Current loop circuit is in standby；

When lighting unit generates current alarm signal, lighting unit (3) conversion is every to have sent primary current report to the state of transmission Alert signal, lighting unit enter waiting reception state, and monitoring host is temporarily in waiting reception state；

When monitoring the current alarm signal that host (7) identify that lighting unit (3) are sent, current alarm signal information is converted It at the monitoring identifiable signal of host, while monitoring host and converting to transmission state and send back and hold current signal, monitor host Every to have sent a receipt current signal, monitoring host enters waiting reception state；

After lighting unit (3) identifies receipt current signal, lighting unit enters standby mode.

2. the point type LED intelligence ignition device based on current ring communication as described in claim 1, which is characterized in that described The current loop circuit for monitoring host includes monitoring host power supply circuit, monitoring host lightning protection circuit, monitoring host transmitting line, prison It surveys host and receives circuit and monitoring host waveform calibration circuit；Monitoring host transmitting line includes that monitoring host sends isolation circuit With monitoring host sending controling circuit；Monitoring host and receiving circuit includes that monitoring host reception isolation circuit and monitoring host receive Control circuit；

Lighting unit current loop circuit includes lighting unit lightning protection circuit, lighting unit transmitting line, lighting unit reception circuit Circuit is calibrated with lighting unit waveform；Lighting unit transmitting line includes that lighting unit sends isolation circuit and lighting unit transmission Control circuit；It includes that lighting unit receives isolation circuit and lighting unit reception control circuit that lighting unit, which receives circuit,.

3. the point type LED intelligence ignition device based on current ring communication as claimed in claim 2, which is characterized in that monitoring master Electromechanical source circuit include the cathode of the anode diode D1 that is connected with input power VSS, diode D1, capacitor C1 one end, One end of capacitor C3, the cathode of diode D2 are connected with the monitoring port host power supply circuit U1-I, monitor host power supply circuit U1- The port II, the anode of diode D2, resistance R1 one end be connected with one end of capacitor C2, the other end of resistance R1, capacitor C2 The other end, the monitoring port host power supply circuit U1-III, one end of resistance R2, the other end of capacitor C1 and monitoring host thunder-lightning The port F1 on road is connected, and the other end of capacitor C3 is connected with the other end of resistance R2；

Monitoring host lightning protection circuit includes the port resistance F1 being in parallel and the port resistance F2, one end and the monitoring host of the port F1 The port power circuit U1-III is connected, and the other end of the port F1 is connected with the port inductance L1-1, the port inductance L1-2 and the first electricity It flows loop back path to be connected, the port inductance L1-4 is connected with the second current loop, and one end of the port F2 is isolated with monitoring host transmission The D3-1 of circuit is connected, and the other end of the port F2 is connected with the port inductance L1-3；

Monitoring host transmitting line includes that monitoring host sends isolation circuit and monitoring host sending controling circuit；Monitor host hair Sending isolation circuit includes the diode group D3 that concatenation is constituted, wherein diode D3-1 and the one of the monitoring port host lightning protection circuit F2 End is connected, and diode D3-2 is connected with GND1, and diode D3-3 is connected with one end of load resistance R3, and load resistance R3's is another End, monitoring host send the port isolation circuit U4-4 and are connected with the monitoring host transmission port isolation circuit U3-4, monitoring host hair It send the port isolation circuit U4-3, monitoring host to send the port isolation circuit U3-3 to be connected with diode D3-4；

Monitoring host sending controling circuit includes transmitting line control the signal TXD1, amplifier Q1 being connected with one end of resistance R7 Base stage, the anode of diode D4, one end of resistance R6 be connected with the other end of resistance R7, the collector of amplifier Q1, two poles The cathode of pipe D4 is connected with one end of resistance R8, the other end of resistance R8, one end of capacitor C6 and monitoring host master control power supply VCC Be connected, the other end of capacitor C6 is connected with the GND for monitoring host master control power supply, the emitter of amplifier Q1, resistance R5 one end, The monitoring port host sending controling circuit U4-1 is connected with the monitoring port host sending controling circuit U3-1, and resistance R6's is another End, resistance R5 the other end, monitoring the port host sending controling circuit U4-2, monitoring the port host sending controling circuit U3-2 with The GND for monitoring host master control power supply is connected；

It includes that the monitoring host being connected with one end of load resistance R3 receives isolation circuit U2-1 that monitoring host, which receives isolation circuit, Port, monitoring host receive the port isolation circuit U2-2 and are connected with the other end of load resistance R3；

Monitor host and receive circuit: monitoring host receives the port control circuit U2-4, one end of capacitor C4 and monitoring host master control Power supply VCC is connected, and the other end of capacitor C4 is connected with monitoring host master control power supply GND, and monitoring host receives control circuit U2-3 Port, one end of resistance R4, capacitor C5 one end be connected with output signal Rec1, the other end of resistance R4, capacitor C5 it is another End is connected with monitoring host master control power supply GND；

Monitoring host waveform calibrates circuit: output signal Rec1 is connected with the monitoring host waveform calibration port circuit U 5-2, monitors Host waveform calibration circuit U 5-1, control signal DIR are connected with one end of resistance R8, the other end of resistance R8 and monitoring host master It controls power supply GND to be connected, the monitoring host waveform calibration port circuit U 5-14, one end of capacitor C7 and monitoring host master control power supply VCC It is connected, the other end of capacitor C7 is connected with monitoring host master control power supply GND, and monitoring host waveform calibration circuit U 5-7 and monitoring are led Owner controls power supply GND and is connected, and monitoring host waveform calibrates one end and the output signal RXD1 phase of the port circuit U 5-3, resistance R9 Even, the other end of resistance R9 is connected with monitoring host master control power supply GND.

4. the point type LED intelligence ignition device based on current ring communication as claimed in claim 2, which is characterized in that lighting list First lightning protection circuit includes the port resistance F11 being in parallel and the port resistance F21, one end of the port F11 and lighting unit send every It is connected from circuit diode D31-2, the other end of the port F11 is connected with the port inductance L11-1, the port inductance L11-2 and second Current loop is connected, and the port inductance L11-4 is connected with the first current loop, and one end of the port F21 and lighting unit are sent Isolation circuit diode D31-1 is connected, and the other end of the port F21 is connected with the port inductance L11-3；

Lighting unit send isolation circuit include be connected with one end of the port lighting unit lightning protection circuit F21 lighting unit transmission every From circuit diode D31-1, one end of diode D31-2 and lighting unit the hair port lightning protection circuit F11 is connected, D31-3 with bear The one end for carrying resistance R31 is connected, and the other end of load resistance R31, the port U41-4 are connected with the port U31-4, the port U41-3, The port U31-3 is connected with diode D31-4；

Lighting unit sending controling circuit includes the transmitting line control being connected with one end of lighting unit sending controling circuit R71 Signal TXD1, the base stage of amplifier Q11, one end of resistance R61, the positive of diode D41 are connected with the other end of resistance R71, The collector of amplifier Q11, the cathode of diode D41 are connected with one end of resistance R81, the other end, the capacitor C61 of resistance R81 One end be connected with lighting unit master control power supply VCC, the other end of capacitor C61 is connected with the GND of lighting unit master control power supply, puts The emitter of big device Q11, one end, the lighting unit port sending controling circuit U41-1 and the lighting unit of resistance R51 send and control The port circuit U 31-1 is connected, the other end of resistance R61, the other end of resistance R51, the end lighting unit sending controling circuit U41-2 Mouth, the lighting unit port sending controling circuit U31-2 are connected with the GND of lighting unit master control power supply；

It includes the lighting unit reception isolation circuit U21-1 that is connected with one end of load resistance R31 that lighting unit, which receives isolation circuit, Port, lighting unit receive the port isolation circuit U21-2 and are connected with the other end of load resistance R31；

Lighting unit receives control circuit: lighting unit receives control circuit U21-4, one end of capacitor C41 and lighting unit master It controls power supply VCC to be connected, the other end of capacitor C41 is connected with lighting unit master control power supply GND, and lighting unit receives control circuit The port U21-3, one end of resistance R41, capacitor C51 one end be connected with output signal Rec1, the other end, the capacitor of resistance R41 The other end of C51 is connected with lighting unit master control power supply GND；

Lighting unit waveform calibrates circuit: output signal Rec1 signal is connected with the lighting unit waveform calibration port circuit U 51-2, The lighting unit waveform calibration port circuit U 51-1, control signal DIR are connected with one end of resistance R81, the other end of resistance R81 It is connected with lighting unit master control power supply GND, lighting unit waveform calibrates the port circuit U 51-14, one end of capacitor C71 and lighting Unit master control power supply VCC is connected, and the other end of capacitor C71 is connected with lighting unit master control power supply GND, the calibration of lighting unit waveform The port circuit U 51-7 is connected with lighting unit master control power supply GND, and lighting unit waveform calibrates the port circuit U 51-3, resistance R91 One end be connected with output signal RXD1, the other end of resistance R91 is connected with lighting unit master control power supply GND.

5. the point type LED intelligence ignition device based on current ring communication as claimed in claim 3, which is characterized in that electric current report Alert signal transmission are as follows: when the current alarm signal for having lighting unit to send in current loop, lighting unit sends control electricity The input TXD1 on road is alert data, and alert data drives lighting unit by the resistance R71 of lighting unit sending controling circuit Sending controling circuit amplifier Q11 makes its on-off, and lighting unit master control power supply VCC passes through the electricity of lighting unit sending controling circuit Hinder R81, lighting unit sending controling circuit amplifier Q11 the driving port lighting unit transmitting line U41, lighting unit sends electricity The road port U31 on-off, alert data are loaded into current loop；

When the current alarm signal for having lighting unit to send in current loop, lighting unit, which receives circuit and is in, to be forbidden receiving State；

When the current alarm signal for having lighting unit to send in current loop, monitoring host sending controling circuit TXD1 is in High level, high level monitor host sending controling circuit amplifier Q1 by the resistance R7 driving of monitoring host sending controling circuit Conducting, monitoring host master control power supply VCC are put by monitoring host sending controling circuit resistance R8, monitoring host sending controling circuit The big device Q1 driving monitoring port host transmitting line U4, the conducting of the monitoring port host transmitting line U3, communication section electric current loopback Road；

When the current alarm signal for having lighting unit to send in current loop, monitoring host power supply circuit is current loop circuit Power supply is provided, power supply is by the port F1 of monitoring host lightning protection circuit, the port L1 for monitoring host lightning protection circuit, monitoring host the One current loop, the first current loop of lighting unit, the port lighting unit lightning protection circuit L11, lighting unit lightning protection circuit The port F21, lighting unit send isolation circuit diode D31-1, lighting unit sends isolation circuit diode D31-3, lighting Unit loads resistance R31, the lighting unit transmission port isolation circuit U41-4 and the lighting unit transmission port isolation circuit U31-4, Lighting unit sends the port isolation circuit U41-3 and lighting unit sends the port isolation circuit U31-3, lighting unit sends isolation Circuit diode D31-4, lighting unit send isolation circuit diode D31-2, the port lighting unit lightning protection circuit F11, lighting The port unit lightning protection circuit L11, the second current loop of lighting unit, monitoring the second current loop of host, monitoring host are anti- The port L1 on thunder and lightning road, the port F2 for monitoring host lightning protection circuit, monitoring host send isolation circuit diode D3-1, monitoring master Machine sends isolation circuit diode D3-3, monitoring host receives the port isolation circuit U2-1, monitoring host receives isolation circuit U2- 2 ports, monitoring host send the port isolation circuit U4-4 and monitoring host sends the port isolation circuit U3-4, monitoring host is sent The port isolation circuit U4-3 and monitoring host send the port isolation circuit U3-3, monitoring host sends the port isolation circuit D3-4, It monitors host and sends the port isolation circuit D3-2, monitoring host transmission isolation circuit GND1；

When the current alarm signal for having lighting unit to send in current loop, monitoring host receives circuit from current loop In the current alarm signal that receives receive isolation circuit U2 by monitoring host and be converted into output signal Rec1, using monitoring Output signal RXD1 is sent into monitoring host SCM after host waveform calibrates circuit calibration；

Receipt current signal transmission are as follows: when there is the receipt current signal of monitoring host in current loop, monitoring host is sent The input TXD1 of control circuit is receipt data, and receipt data drive monitoring by the resistance R7 of monitoring host sending controling circuit Host sending controling circuit amplifier Q1 makes its on-off, and monitoring host master control power supply VCC is by monitoring host sending controling circuit Resistance R8, the monitoring host sending controling circuit amplifier Q1 driving monitoring port host transmitting line U4, monitoring host send electricity The road end U3 on-off, receipt data are loaded into current loop；

When there is the receipt current signal of monitoring host in current loop, monitoring host, which receives circuit and is in, to be forbidden receiving shape State；

When there is the receipt current signal of monitoring host in current loop, lighting unit sending controling circuit TXD1 is in high electricity Flat, high level is led by the resistance R71 driving lighting unit sending controling circuit amplifier Q11 of lighting unit sending controling circuit Logical, lighting unit master control power supply VCC sends control resistance R81, lighting unit sending controling circuit Q1 driving by lighting unit The port lighting unit transmitting line U41, the conducting of the lighting unit port transmitting line U31, communication section current loop；

When there is the receipt current signal of monitoring host in current loop, monitoring host power supply circuit provides for current loop circuit Power supply, power supply is by the end F1 of monitoring host lightning protection circuit, the end L1 for monitoring host lightning protection circuit, monitoring the first electric current loop of host Circuit, the first current loop of lighting unit, the port lighting unit lightning protection circuit L11, the port lighting unit lightning protection circuit F21, Lighting unit sends isolation circuit diode D31-1, lighting unit sends isolation circuit diode D31-3, lighting unit receives The port isolation circuit U21-1, lighting unit receive the port isolation circuit U21-2, lighting unit sends the port isolation circuit U41-4 Send the port isolation circuit U31-4 with lighting unit, lighting unit send the port isolation circuit U41-3 and lighting unit send every Isolation circuit diode D31-4 is sent from the port circuit U 31-3, lighting unit, lighting unit sends isolation circuit D3-2, lighting The port unit lightning protection circuit F11, the port lighting unit lightning protection circuit L11, the second current loop of lighting unit, monitoring host the Two current loops, monitor host lightning protection circuit the port L1, monitor host lightning protection circuit the port F2, monitoring host send every Isolation circuit diode D3-3, monitoring load on host computers resistance R3, monitoring host hair are sent from circuit diode D3-1, monitoring host The port isolation circuit U4-4 and monitoring host is sent to send the port isolation circuit U3-4, the monitoring host transmission port isolation circuit U4-3 With monitoring host send the port isolation circuit U3-3, monitoring host send isolation circuit diode D3-4, monitoring host send every Isolation circuit GND1 is sent from circuit diode D3-2, monitoring host；

When there is the receipt current signal of monitoring host in current loop, lighting unit receives circuit and connects from current loop The electric current receipt signal received receives isolation circuit U2 by lighting unit and is converted into Rec1 output signal, using lighting unit Output RXD1 signal is sent into lighting unit communication alarming single-chip microcontroller after waveform calibrates circuit calibration.

6. the point type LED intelligence ignition device based on current ring communication as claimed in claim 2, which is characterized in that described Monitoring host (7) includes power supply, single-chip microcontroller, display screen and current loop circuit；Change is provided on the monitoring host power supply plate Pressure isolation circuit, two-way voltage-stabilizing isolation output, alarm relay power supply, communication power supply, 5V out-put supply, connects 24V out-put supply Plug-in unit interconnecting module；STM32F core, connector interconnecting module, 485 interfaces, CAN are provided on the monitoring host master control borad Interface, audible alarm unit, clock circuit, 3.3V out-put supply, LCD display interface；

Be provided on the monitoring main-machine communication plate monitoring the first current loop circuit of host, monitoring the second current loop circuit of host, Monitor host third current loop circuit, monitoring the 4th current loop circuit of host, alarm relay circuit, connector interconnecting module；

Observation circuit first is provided on the monitoring host lighting protection plate, and vertically and horizontally lightning protection circuit, observation circuit second are vertically and horizontally prevented Vertically and horizontally vertically and horizontally lightning protection circuit, power input are vertically and horizontally prevented for lightning protection circuit, observation circuit the 4th for thunder and lightning road, observation circuit third Thunder and lightning road.

7. the point type LED intelligence ignition device based on current ring communication as claimed in claim 2, which is characterized in that described Lighting unit (3) includes power management module, main control singlechip, main Control point lamp detection module, adjacent modules, communication alarming monolithic Machine, communication alarming module；

Communication alarming single-chip microcontroller carries out the transmitting-receiving of signal, main control singlechip and power management module, phase by communication alarming module Gang mould block, main Control point lamp detection module are connected；

Main Control point lamp detection module include king light voltage detecting, secondary modulating voltage detection, king light power detecting, pair lamp power detecting, Low voltage starting detection and light detection；Main Control point lamp detection module will test signal and be sent to main control singlechip, main control singlechip point Analysis processing detection signal simultaneously controls the first Phototube Coupling, the second Phototube Coupling and third Phototube Coupling being in parallel respectively；First Phototube Coupling is connected with metal-oxide-semiconductor field effect transistor actuating circuit；Second Phototube Coupling is sequentially connected pulse transformer, current rectifying and wave filtering circuit With fictitious load actuating of relay circuit；Third Phototube Coupling is connected with filament transfer relay actuating circuit；Power module is successively Pass through metal-oxide-semiconductor field effect transistor actuating circuit, fictitious load actuating of relay circuit, filament transfer relay actuating circuit and king light constant current Source driving circuit or secondary lamp constant current source driving circuit are connected；King light constant current source driving circuit drives king light LED load, and secondary lamp is permanent It flows source driving circuit and drives secondary lamp LED load.

8. the point type LED intelligence ignition device based on current ring communication as claimed in claim 1 or 2, which is characterized in that pass through The positioning failure alarm simultaneously of more lighting units is realized in design when poor, after the switching of major-minor light source occurs for lighting unit, lighting list First communication board works on power, and the single-chip microcontroller of lighting unit communication board reads lighting unit extension set coding first, passes through Lighting unit extension set coding obtains a random number as delay time；Then the timing of lighting unit communication board single-chip microcontroller Device, using this random number as overflow value trigger, after the completion of delay, sends warning message, and timer clear 0 since 0, It starts waiting to receive monitoring host receipt signal；After receiving receipt signal, then terminate this time to send；If not receiving receipt letter Number, then timer reset again since " by extension set encode obtain a random number as delay time " at judge, repeatedly Execute program；Monitoring host such as is at the state of signal to be received when not having an alarm signal；When monitoring host receives alarm signal When first identify whether as useful signal, if not then continuing waiting for receiving, if useful signal then shows alarm on a display screen Information simultaneously sends back and holds current signal；It continues waiting for receiving alarm signal after having sent receipt current signal, if receiving identical Alarm signal then skip the link of display and directly transmit receipt signal, then show and send if receiving different alarm signals Receipt signal；Monitoring host repeats the process of identification, display, transmission.