CN103559801B - Multi load is with driving countdown digital display signal lamp fault detection system - Google Patents
Multi load is with driving countdown digital display signal lamp fault detection system Download PDFInfo
- Publication number
- CN103559801B CN103559801B CN201310574103.4A CN201310574103A CN103559801B CN 103559801 B CN103559801 B CN 103559801B CN 201310574103 A CN201310574103 A CN 201310574103A CN 103559801 B CN103559801 B CN 103559801B
- Authority
- CN
- China
- Prior art keywords
- current
- outfan
- power
- circuit
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 65
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 230000002123 temporal effect Effects 0.000 claims description 24
- 238000002955 isolation Methods 0.000 claims description 14
- 230000007257 malfunction Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 230000005428 wave function Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a kind of for multi load with driving countdown digital display signal lamp fault detection method, for solving the test problems of part signal lamp failure when multiple digital display signal lamp parallel connection is followed by an outfan of semaphore.Technical scheme is by gathering the information of voltage of semaphore each road outfan, current information, charging interval information, the information collected carries out logical process and front and back contrast, judges the fault message of signal lights；This technical scheme passes through capacitor charging time fictitious load end power, it is to avoid use power to turn potential circuit and AD circuit, simplifies an outfan and drives circuit structure and the testing process of the detection of multiple signal lamp failures.
Description
Technical field
The invention belongs to transport information and control technical field, particularly relate to method and the technology of the detection of a kind of traffic signal light fault and radio alarming.
Background technology
The basic tool that traffic light relieve traffic congestion as control, has played huge effect to coordinating urban traffic intersection different directions traffic flow.Traffic light great majority are mounted to the scene of traffic intersection; owing to not having cabinet to protect as other electrical equipments; signal lights is highly susceptible to the impact of natural causes such as being struck by lightning, drench with rain; cause that the probability that signal lights breaks down is bigger; easily cause traffic intersection when the traffic light as traffic indicative function break down and traffic jam occurs, even cause vehicle accident.Therefore, obtaining the fault message of traffic intersection signal lamp as early as possible and it is quickly safeguarded, avoided traffic accident great significance to minimizing traffic jam.
Owing to actually used middle traffic light are installed to the very complicated detection difficult causing traffic light of connection of semaphore；The digital display display lamp parallel connection of North and South direction is followed by south, semaphore direction or the outfan in north, direction, the digital display display lamp of multiple footpath is likely to parallel connection and is followed by some People's Bank of China's outfan of semaphore, cause that a load end is connected to multiple digital display signal lamp, rather than the corresponding signal lights of outfan of a semaphore, when the part signal lamp failure of an outfan, it is impossible to only differentiated either with or without electric current, voltage by an outfan.Existing traffic signal control seldom has the fault diagnosis functions for signal lights, and situation adaptability that variety classes signal lights, outfan are installed traffic light quantity different by the detecting device of the existing signal lamp failure independent of semaphore is bad, simultaneously because existing detection constructional device is complicated, expensive, its structure is even complicated a lot of than traffic signal control, causes that signal lamp failure detects still without a reliable detection method of practicality.
The existing traffic lights fault detection system independent of traffic control signal machine has plenty of the information of voltage according to traffic lights two ends and carries out breakdown judge, also having system is the current state information by multi collect traffic lights, removes to judge the fault message of traffic lights again through certain self-learning algorithm；" traffic signal lamp detector " (application number: 201020281558.9, applicant: Wu Haidong) it is the Transistor-Transistor Logic level signal that by certain circuit, lamp two ends 220V AC signal is converted into 5V, the information of voltage of this traffic lights is transferred to network monitoring room again by people to judge the fault message of traffic lights, this technology has the disadvantage that and can only detect partial fault state, and in numerous malfunctions, there is voltage at traffic lights two ends and situation that lamp breaks down has a lot；" a kind of traffic signal fault detection device with self-learning function and detection method thereof " (application number: 201010594973.4, applicant: Wang Jing) by the current state information of the collection traffic lights such as AD, this information is delivered to the malfunction being judged lamp in arm processor by self-learning algorithm, this technology has used AD translation circuit, filter circuit causes that the structure of circuit is complex, and the algorithm of self study is computationally intensive, the detection cycle is longer.
Summary of the invention
The invention provides that a kind of circuit structure is simple, practical, detect the fireballing fault detection system driving multiple countdown digital display signal lamps for one outfan of semaphore, system can the most common failure of detection digital display signal lamp promptly and accurately.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multi load is with driving countdown digital display signal lamp fault detection system, it is characterised in that:
This system utilizes the power detecting method based on capacitor charging time to determine the relation of bearing power and charging interval, minimum resolution defining method is utilized to determine three factors determining that the minimum time that detection system can effectively detect fluctuates, an outfan is utilized to drive at most the outfan that signal lights number determination method determines that detection system allows to drive signal lights maximum quantity, system failure detection flow process is utilized to determine the failure detection steps of system, charging interval data acquisition and procession method is utilized to determine the charging interval and complete data process, it comprises voltage detecting circuit, current detection circuit, governor circuit, telecommunication circuit；Voltage detecting circuit gathers the power frequency 220V information of voltage at signal lights two ends and converts thereof into the first low and high level information, and this first low and high level information is passed to governor circuit, current detection circuit is for gathering the current information of traffic lights and converting thereof into the second low and high level information, and the second low and high level information is passed to governor circuit, current detection circuit combines with governor circuit and gathers the charging interval that output end signal lamp is corresponding, the governor circuit information of voltage to obtaining, current information, charging interval carries out data process and judges the malfunction of signal lights, the status information of signal lights is uploaded to traffic surveillance and control center by telecommunication circuit, wherein:
1) n road voltage detecting circuit comprises the first current-limiting resistance, the first varistor, the first one-way conduction diode, the first isolation optocoupler, for the first filter resistance of filtering and the first filter capacitor；Live wire in the 220V power line of traffic light is linked into circuit through the first current-limiting resistance, another of first current-limiting resistance terminates the positive input of the first one-way conduction diode, the other end of the first one-way conduction diode accesses the anode input of the first isolation optocoupler, the negative electrode input of the first isolation optocoupler is received on zero line, first filter capacitor is parallel to the input of the first isolation optocoupler, first varistor is concatenated between zero line and live wire, the drain output of the first isolation optocoupler receives the positive pole of power supply, gate output terminal concatenates the filter circuit being made up of the first filter capacitor and the first filter resistance parallel connection, the other end ground connection of filter circuit, the gate output terminal of the first isolation optocoupler and low and high level outfan, receive on the I/O port of processor；
2) n road current detection circuit includes the second current transformer, the second current/voltage transfer resistance, the second varistor, the second current-limiting resistance, the second one-way conduction diode, the second charging capacitor, the second stabilivolt, the second discharge resistance, the second discharge switch；Letter
Power line traverse the second current transformer that signal lamp is powered is as the input of circuit, second varistor and the second current/voltage transfer resistance are parallel to the outfan of the second current transformer, one outfan one the second one-way conduction diode of concatenation of the second current transformer, the other end of the second one-way conduction diode concatenates second current-limiting resistance again, the other end of the second current-limiting resistance receives one end of the second charging capacitor, the other end of the second charging capacitor receives another outfan of the second current transformer, second stabilivolt and the second one-way conduction diode with consistent electric direction and receive the second charging capacitor two ends, the discharge circuit that the two ends parallel connection of the second stabilivolt is composed in series by the second discharge resistance and the second discharge switch, the forward outfan of the second stabilivolt is low and high level, it is connected to the I/O port of main control processor；
3) based on the power detecting method of capacitor charging time, according to different capacity, the time difference that electric capacity is charged to a certain level carrys out the change of analog input end power；The voltage at electric capacity two ends and the charging current of electric capacity is met three below formula:
Wherein:For electric capacity C both end voltage,For the capacitance of current line electric capacity in electric capacity C1 to Cn,For the electric current that electric capacity is charged,For the charging interval,For integral sign,For integral operator, represent rightIt is integrated,For one-way conduction diode cathode output voltage,For resistanceArriveThe resistance of middle current line resistance,For resistanceArriveThe resistance of middle current line resistance,For the unit square wave function that frequency is 50Hz,MakeElectric capacity is charged by only sinusoidal wave positive half period,The quantity of signal lights is driven for current outfan,For the power of current one signal lights of outfan,For signal lights supply voltage,For the turn ratio of current transformer,Pressure drop during for one-way conduction diode current flow；The voltage at electric capacity two ends is obtained by three above formulaWith the charging intervalRelation as follows:
Output terminationHigh level it is charged to during individual signal lightsTimeWith output terminationHigh level it is charged to during individual signal lightsTimeIt is limited to following two formulas:
Obtain according to two formulas aboveWithSolution as follows:
It it is an output terminationIndividual signal lights and an output terminationIndividual signal lights is charged to the difference of high level time, whereinWith the quantity driving signal lightsInversely,IncreaseReduce,ReduceIncrease；
4) minimum resolution defining method: minimum resolutionIt it is the minimum charging interval difference that can effectively identify of detection system,Limited size in three below condition: the machine cycle of processor, load end external interference cause charging interval fluctuationThe charging interval caused with the change of testing circuit component parameter fluctuates, the sum that affects that the size of T produces respectively to above three condition is directly proportional, as described in following formula:,；
5) outfan drives at most digital display signal lamp number determination method: countdown digital display display lamp its power when work is change, must calculate described in the defining method such as following formula of maximum signal lights quantity N that detection system allows an outfan maximum drive quantity, detection system to allow one load end of semaphore to drive using digital display peak power at work as W:
W is the peak power in digital display work, is solved by formula aboveValue, it is allowed to a load end drive at most quantity N=[]-1, [] represent rightRound；
6) multi load described in comprises the steps of with the testing process driving countdown digital display signal lamp fault detection system, identification process: after system electrification, outfan according to current information and information of voltage recognition detection system digital display input or semaphore is connected to the way of digital display signal lamp, gathering the charging interval respectively at the outfan being connected to signal lights and set up " temporal power " function library, power was simulated with the charging interval；Circling measurment process: processor reads the high or low state of electric current being connected to signal lights outfan, the high or low state of voltage, whether the current information by contrasting this outfan is consistent with information of voltage, if inconsistent, send warning message, gather fault detection system input be connected to the charging interval on digital display signal lamp correspondence road and set up " temporal power " function library, " temporal power " function library now is deducted the performance number of " temporal power " function library in the current road correspondence moment that identification process obtains, if the difference of certain time period or certain several time period is more than minimum resolution, a certain section of Ze Gai road digital display signal lamp or a few segment numeral pipe break down, if at the power difference of whole time domain of function more than minimum resolution, then a certain road of this outfan or a few way explict occurrence fault, if difference is less than minimum resolution, Ze Gai road output end signal lamp is working properly；After judging fault message, the fault message on this road is uploaded to traffic surveillance and control center by telecommunication circuit by primary processor；
7) charging interval data acquisition and procession method: with voltage signal for synchronizing signal, in outfan is initially powered up on a certain road, digital display signal lamp brightens by going out, starts timing in seconds, stops power supply at outfan, and signal lights becomes the moment of going out and stops timing；Charging interval within each second this second of multi collect of timing, the data obtained are sought intermediate value, using this intermediate value charging interval as the simulated power of this second, the charging interval in three cycles of continuous acquisition, three charging intervals that three same seconds in cycle is corresponding seek intermediate value, using intermediate value now as the charging interval identifying process Zhong Gai road this second of signal lights, set up current road " temporal power " function library；Circling measurment process: with voltage signal for synchronizing signal, it is initially powered up at outfan, time digital display signal lamp is brightened by going out, start timing in seconds, on a certain road, outfan is stopped power supply, when signal lights change is gone out, processor stops timing, charging interval within each second this second of multi collect of timing, to the data sorting collected, ask for intermediate value, using this intermediate value discharge and recharge time as this second simulated power, set up " temporal power " function library, after " temporal power " function library collection completes, the functional value now obtained is deducted the functional value in the synchronization identification process of current road, if difference is more than minimum resolution, then current road load end occurs that bearing power declines, if difference is less than minimum resolutionThen current road outfan load does not occur that bearing power declines；In the process of normal operation, the cycle of semaphore or the time of traffic lights change, then update " temporal power " function library on corresponding road by the method for above-mentioned identification process.
The invention has the beneficial effects as follows a kind of simple in construction of offer, detect and fireballing drive multiple countdown digital display signal lamp fault detection systems for an outfan, system Intelligent Measurement can be connected to the way of signal lights and the power of outfan load to the outfan of intersection annunciator.System judges the malfunction of signal lights by the change of outfan power, can promptly and accurately detect the malfunction of signal lights, shorten the cycle of signal lamp failure maintenance, avoid artificially arriving the fault status information of site inspection signal lights, save manpower and materials.
Accompanying drawing explanation
Fig. 1 is that multi load of the present invention is with the structured flowchart driving countdown digital display signal lamp fault detection system；
Fig. 2 is that multi load of the present invention is with the circuit diagram driving countdown digital display signal lamp fault detection system voltage detecting circuit, wherein RY_1 is varistor, R1_1 is current-limiting resistance, D1 is one-way conduction diode, C1_1 is filter capacitor, U1 is isolation optocoupler, R1_2 filter resistance, C1_2 filter capacitor, VCC represents the positive pole of power supply, GND represents the negative pole of power supply, I O table shows the I/O port of processor, L refers to the live wire of traffic lights power supply, N refers to the zero line of traffic lights power supply, wherein RY_n, Rn_1, Dn, Cn_1, Un, Rn_2, Cn_2 is such as RY_1, R1_1, D1, C1_1, U1, R1_2, C1_2；
Fig. 3 is that multi load of the present invention is with the circuit diagram driving countdown digital display signal lamp fault detection system current detection circuit, wherein RY_1 is varistor, RV_1 is that electric current turns voltage resistance, D1 is one-way conduction diode, RW_1 is current-limiting resistance, C1 is shaping capacitance, W1 is stabilivolt, RF_1 is discharge resistance, IO is the I/O port of processor, EN is that processor controls control end, the GND of discharge switch and represents the negative pole of power supply, and RY_n, RV_n, Dn, RW_n, Cn, Wn, RF_n are such as RY_1, RV_1, D1, RW_1, C1, W1, RF_1；
Fig. 4 is that multi load of the present invention is with the fault detect flow chart driving countdown digital display signal lamp fault detection system.
Detailed description of the invention
Multi load includes voltage detecting circuit, current detection circuit, governor circuit, telecommunication circuit with driving countdown digital display signal lamp fault detection system；The processor of governor circuit needs possess parallel processing function, generally selects FPGA；Local communication interface selects Max485, and communication module selects GPRS wireless transmitter, and communication network is wireless GPRS network, below in conjunction with accompanying drawing, the present invention is told about in detail.
This system utilizes the power detecting method based on capacitor charging time to determine the relation of bearing power and charging interval, minimum resolution defining method is utilized to determine three factors determining that the minimum time that detection system can effectively detect fluctuates, an outfan is utilized to drive at most the outfan that signal lights number determination method determines that detection system allows to drive signal lights maximum quantity, system failure detection flow process is utilized to determine the failure detection steps of system, charging interval data acquisition and procession method is utilized to determine the process that the charging interval gathers and data process, it comprises voltage detecting circuit, current detection circuit, governor circuit, telecommunication circuit；Voltage detecting circuit gathers the power frequency 220V information of voltage at signal lights two ends and converts thereof into low and high level information, and this low and high level information is passed to governor circuit, current detection circuit is for gathering the current information of traffic lights and converting thereof into low and high level information, and low and high level information is passed to governor circuit, current detection circuit combines with governor circuit and gathers the charging interval that output end signal lamp is corresponding, the governor circuit information of voltage to obtaining, current information, charging interval carries out data process and judges the malfunction of signal lights, the status information of signal lights is uploaded to traffic surveillance and control center by telecommunication circuit, wherein:
1) as in figure 2 it is shown, in the present embodiment voltage detecting circuit include varistor RY_1, current-limiting resistance R1_1, one-way conduction diode D1, filter capacitor C1_1, isolation optocoupler U1, filter resistance R1_2, filter capacitor C1_2；One end of current-limiting resistance R1_1 is connected with the live wire (L) of traffic lights, the other end is connected with commutation diode D1, the other end of D1 is connected with shaping capacitance C1_1, the other end of electric capacity receives zero line (N), the input of optocoupler the two ends to electric capacity C1_1, the drain output of optocoupler receives the positive pole of power supply, the low-pass filter circuit that the source series of optocoupler is made up of R1_2 and C1_2 parallel connection, the other end ground connection of low-pass filter circuit, the I/O port of governor circuit received by the source electrode outfan of optocoupler；The varistor that varistor RY_1 selects resistance to be 7k, pressure voltage 470V, R1_1 selects 50K/2W resistance, D1 selects 1N4007, C1_1 selects 25v/47uf electric capacity, U1 selects 6N137, R1_2 selects 10K/0.25W resistance, and C1_2 selects 16v/10uf electric capacity, and wherein RY_n, Rn_1, Dn, Cn_1, Un, Rn_2, Cn_2 are such as RY_1, R1_1, D1, C1_1, U1, R1_2, C1_2；
2) as shown in Figure 3, in the present embodiment, current detection circuit comprises current transformer, varistor RY_1, electric current turns voltage resistance RV_1, one-way conduction diode D1, current-limiting resistance RW_1, shaping capacitance C1, stabilivolt W1, discharge resistance RF_1, discharge switch, the outfan of current transformer is in parallel with RY_1 and RV_1, one end of the RV_1 of resistance is connected with the anode of D1, stabilivolt W1 is parallel to C1 two ends, after RF_1 connects with discharge switch and to the two ends of electric capacity C1, the break-make of discharge switch controls end En and receives the I/O port of governor circuit, what C1 two ends exported is low and high level and receives the I/O port of governor circuit；Turn ratio 400:1 selected by current transformer, input rated current 2A, rated voltage is the transformer of 1000V, varistor RY_1 selects resistance to be 7K, pressure voltage is the varistor of 470V, RV_1 can be selected for 500K/0.25W resistance, RW_1 can be selected for 0.5K/0.25W resistance, diode D1 can be selected for 1N4001, stabilivolt W1 selects 1N4731, electric capacity C1 selects the electric capacity of 16v/1uf, discharge resistance RF_1 selects 0.1K/0.25W resistance, discharge switch selects CD4066, wherein RY_n, RV_n, Dn, RW_n, Cn, Wn, RF_n chooses with reference to RY_1, RV_1, D1, RW_1, C1, W1, RF_1, the components and parts of different parameters can be selected according to the actual loading difference that different outfans are corresponding；
3) the described power detection based on capacitor charging time is mainly according under different capacity, and the time difference that electric capacity is charged to a certain level carrys out the change of analog input end power；Single digital display signal lamp shows that the power of " 88 " is, thenPower after individual signal lights parallel connection is exactly, for FPGA,For about 3V, substitute into above-mentionedWithComputing formula, it can be deduced that output terminationIndividual andIndividual signal lights is charged to the time of high level；
4) described minimum resolutionDetermination, the machine cycle of processorChoose, for its crystal oscillator of FPGA for 50MHz, then the machine cycleIt is 0.02 microsecond, it is contemplated that processor also needs to perform a plurality of instruction, generallyChoose 10 to 100, the charging interval fluctuation that load end interference causes, according to real dataChoose10%, andChoose 2 or 3, the fluctuation in the charging interval that the change of testing circuit component parameter causesActual charge data can be chosen10%, and1 or 2 can be chosen, minimum resolutionCan according to formulaCalculate；
5) determination of the peak signal lamp quantity N of described detection system one load end driving of permission semaphore, according to what be derived above、And minimum resolution, the formula that data substitute into N calculated above can draw the value of N；
6) described multi load comprises the steps of with the testing process driving countdown digital display signal lamp fault detection system, as shown in Figure 4, it is connected to the way of digital display signal lamp according to current information and information of voltage recognition detection system digital display input (outfan of semaphore) after system electrification, gathering the charging interval respectively at the outfan being connected to signal lights and set up " temporal power " function library, power was simulated with the charging interval；Whether identification enters circling measurment process after completing, and processor reads and is connected to the high or low status information of electric current of signal lights outfan, the high or low status information of voltage, consistent with voltage status information by contrasting current state information, if inconsistent, sends warning message；Gather fault detection system input be connected to the charging interval on digital display signal lamp correspondence road and set up " temporal power " function library, " temporal power " function library now is deducted the power of " temporal power " function library in the current road correspondence moment that identification process obtains, if the difference of certain time period or certain several time period is more than minimum resolution, a certain section of Ze Gai road digital display signal lamp or a few segment numeral pipe break down, if at the power difference of whole time domain of function more than minimum resolution, then a certain road of this outfan or a few way explict occurrence fault, if difference is less than minimum resolution, Ze Gai road output end signal lamp is working properly；After judging fault message, the fault message on this road is uploaded to traffic surveillance and control center by telecommunication circuit by primary processor；
7) described charging interval data acquisition and procession method and the process of identification: read the information of voltage of current outfan by voltage detecting circuit, and with this information of voltage for synchronizing signal, when supply voltage is initially powered up, time signal lights brightens, disconnect discharge switch, current detection circuit is allowed to start electric capacity is charged, processor starts timing, when processor judges that the level at electric capacity two ends reaches high level time, processor stops timing, record this charging interval, electric capacity is discharged by Guan Bi discharge switch, discharge switch is disconnected again after electric discharge 5ms, start timing and again gather the charging interval, stop after collecting 3 data, to 3 data sortings, remove maximum and minima, using remaining intermediate value as the power of countdown digital display in this second, the charging interval of next second is gathered in the same way when next second arrives, with information of voltage for synchronizing signal, when digital display signal lamp becomes the previous second gone out as last second gathering data, the charging interval in three cycles of continuous acquisition, three charging intervals that three same seconds in cycle is corresponding seek intermediate value, using intermediate value now as identify process Zhong Gai road this second of signal lights charging interval, set up current road " temporal power " function library；In circling measurment process, with voltage signal for synchronizing signal, be initially powered up at outfan, time digital display signal lamp is brightened by going out, start timing in seconds, stop power supply at outfan, signal lights become go out the moment stop timing；In the charging interval that each second of timing gathers in this second for 3 times, remove maximum, minima, ask for intermediate value, using this intermediate value discharge and recharge time as the simulated power of this second, after " temporal power " function library collection completes, the functional value now obtained is deducted the functional value of " temporal power " function library of the current road synchronization obtained in identification process, if difference is more than minimum resolution, then there is fault in current road signal lights, if difference is less than minimum resolutionThen current road digital display signal lamp is normal；In the process of normal operation, the cycle of semaphore or the time of traffic lights change, then update " temporal power " function library on corresponding road by above-mentioned identification process approach.
Claims (1)
1. a multi load is with driving countdown digital display signal lamp fault detection system, it is characterized in that: this system utilizes the power detecting method based on capacitor charging time to determine the relation of bearing power and charging interval, minimum resolution defining method is utilized to determine three factors determining that the minimum time that detection system can effectively detect fluctuates, an outfan is utilized to drive at most the outfan that signal lights number determination method determines that detection system allows to drive signal lights maximum quantity, system failure detection flow process is utilized to determine the failure detection steps of system, charging interval data acquisition and procession method is utilized to determine the charging interval and complete data process, it comprises voltage detecting circuit, current detection circuit, governor circuit, telecommunication circuit；Voltage detecting circuit gathers the power frequency 220V information of voltage at signal lights two ends and converts thereof into the first low and high level information, and this first low and high level information is passed to governor circuit, current detection circuit is for gathering the current information of traffic lights and converting thereof into the second low and high level information, and the second low and high level information is passed to governor circuit, current detection circuit combines with governor circuit and gathers the charging interval that output end signal lamp is corresponding, the governor circuit information of voltage to obtaining, current information, charging interval carries out data process and judges the malfunction of signal lights, the status information of signal lights is uploaded to traffic surveillance and control center by telecommunication circuit, wherein:
1) n road voltage detecting circuit comprises the first current-limiting resistance, the first varistor, the first one-way conduction diode, the first isolation optocoupler, for the first filter resistance of filtering and the first filter capacitor；Live wire in the 220V power line of traffic light is linked into circuit through the first current-limiting resistance, another of first current-limiting resistance terminates the positive input of the first one-way conduction diode, the other end of the first one-way conduction diode accesses the anode input of the first isolation optocoupler, the negative electrode input of the first isolation optocoupler is received on zero line, first filter capacitor is parallel to the input of the first isolation optocoupler, first varistor is concatenated between zero line and live wire, the drain output of the first isolation optocoupler receives the positive pole of power supply, gate output terminal concatenates the filter circuit being made up of the first filter capacitor and the first filter resistance parallel connection, the other end ground connection of filter circuit, the gate output terminal of the first isolation optocoupler and low and high level outfan, receive on the I/O port of processor；
2) n road current detection circuit includes the second current transformer, the second current/voltage transfer resistance, the second varistor, the second current-limiting resistance, the second one-way conduction diode, the second charging capacitor, the second stabilivolt, the second discharge resistance, the second discharge switch；Power line traverse the second current transformer that signal lights is powered is as the input of circuit, second varistor and the second current/voltage transfer resistance are parallel to the outfan of the second current transformer, one outfan one the second one-way conduction diode of concatenation of the second current transformer, the other end of the second one-way conduction diode concatenates second current-limiting resistance again, the other end of the second current-limiting resistance receives one end of the second charging capacitor, the other end of the second charging capacitor receives another outfan of the second current transformer, second stabilivolt and the second one-way conduction diode with consistent electric direction and receive the second charging capacitor two ends, the discharge circuit that the two ends parallel connection of the second stabilivolt is composed in series by the second discharge resistance and the second discharge switch, the forward outfan of the second stabilivolt is low and high level, it is connected to the I/O port of main control processor；
3) based on the power detecting method of capacitor charging time, according to different capacity, the time difference that electric capacity is charged to a certain level carrys out the change of analog input end power；The voltage at electric capacity two ends and the charging current of electric capacity is met three below formula:
Wherein:For electric capacity C both end voltage,For the capacitance of current line electric capacity in electric capacity C1 to Cn,For the electric current that electric capacity is charged,For the charging interval,For integral sign,For integral operator, represent rightIt is integrated,For one-way conduction diode cathode output voltage,For resistanceArriveThe resistance of middle current line resistance,For resistanceArriveThe resistance of middle current line resistance,For the unit square wave function that frequency is 50Hz,MakeElectric capacity is charged by only sinusoidal wave positive half period,The quantity of signal lights is driven for current outfan,For the power of current one signal lights of outfan,For signal lights supply voltage,For the turn ratio of current transformer,Pressure drop during for one-way conduction diode current flow；The voltage at electric capacity two ends is obtained by three above formulaWith the charging intervalRelation as follows:
Output terminationHigh level it is charged to during individual signal lightsTimeWith output terminationHigh level it is charged to during individual signal lightsTimeIt is limited to following two formulas:
Obtain according to two formulas aboveWithSolution as follows:
It it is an output terminationIndividual signal lights and an output terminationIndividual signal lights is charged to the difference of high level time, whereinWith the quantity driving signal lightsInversely,IncreaseReduce,ReduceIncrease；
4) minimum resolution defining method: minimum resolutionIt it is the minimum charging interval difference that can effectively identify of detection system,Limited size in three below condition: the machine cycle of processor, load end external interference cause charging interval fluctuationThe charging interval caused with the change of testing circuit component parameter fluctuates, the sum that affects that the size of T produces respectively to above three condition is directly proportional, as described in following formula:,；
5) outfan drives at most digital display signal lamp number determination method: countdown digital display display lamp its power when work is change, must calculate described in the defining method such as following formula of maximum signal lights quantity N that detection system allows an outfan maximum drive quantity, detection system to allow one load end of semaphore to drive using digital display peak power at work as W:
W is the peak power in digital display work, is solved by formula aboveValue, it is allowed to a load end drive at most quantity N=[]-1, [] represent rightRound；
6) multi load described in comprises the steps of with the testing process driving countdown digital display signal lamp fault detection system, identification process: after system electrification, outfan according to current information and information of voltage recognition detection system digital display input or semaphore is connected to the way of digital display signal lamp, gathering the charging interval respectively at the outfan being connected to signal lights and set up " temporal power " function library, power was simulated with the charging interval；Circling measurment process: processor reads the high or low state of electric current being connected to signal lights outfan, the high or low state of voltage, whether the current information by contrasting this outfan is consistent with information of voltage, if inconsistent, send warning message, gather fault detection system input be connected to the charging interval on digital display signal lamp correspondence road and set up " temporal power " function library, " temporal power " function library now is deducted the performance number of " temporal power " function library in the current road correspondence moment that identification process obtains, if the difference of certain time period or certain several time period is more than minimum resolution, a certain section of Ze Gai road digital display signal lamp or a few segment numeral pipe break down, if at the power difference of whole time domain of function more than minimum resolution, then a certain road of this outfan or a few way explict occurrence fault, if difference is less than minimum resolution, Ze Gai road output end signal lamp is working properly；After judging fault message, the fault message on this road is uploaded to traffic surveillance and control center by telecommunication circuit by primary processor；
7) charging interval data acquisition and procession method: with voltage signal for synchronizing signal, in outfan is initially powered up on a certain road, digital display signal lamp brightens by going out, starts timing in seconds, stops power supply at outfan, and signal lights becomes the moment of going out and stops timing；Charging interval within each second this second of multi collect of timing, the data obtained are sought intermediate value, using this intermediate value charging interval as the simulated power of this second, the charging interval in three cycles of continuous acquisition, three charging intervals that three same seconds in cycle is corresponding seek intermediate value, using intermediate value now as the charging interval identifying process Zhong Gai road this second of signal lights, set up current road " temporal power " function library；Circling measurment process: with voltage signal for synchronizing signal, it is initially powered up at outfan, time digital display signal lamp is brightened by going out, start timing in seconds, on a certain road, outfan is stopped power supply, when signal lights change is gone out, processor stops timing, charging interval within each second this second of multi collect of timing, to the data sorting collected, ask for intermediate value, using this intermediate value discharge and recharge time as this second simulated power, set up " temporal power " function library, after " temporal power " function library collection completes, the functional value now obtained is deducted the functional value in the synchronization identification process of current road, if difference is more than minimum resolution, then current road load end occurs that bearing power declines, if difference is less than minimum resolutionThen current road outfan load does not occur that bearing power declines；In the process of normal operation, the cycle of semaphore or the time of traffic lights change, then update " temporal power " function library on corresponding road by the method for above-mentioned identification process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574103.4A CN103559801B (en) | 2013-11-14 | 2013-11-14 | Multi load is with driving countdown digital display signal lamp fault detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574103.4A CN103559801B (en) | 2013-11-14 | 2013-11-14 | Multi load is with driving countdown digital display signal lamp fault detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103559801A CN103559801A (en) | 2014-02-05 |
| CN103559801B true CN103559801B (en) | 2016-06-29 |
Family
ID=50014038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310574103.4A Expired - Fee Related CN103559801B (en) | 2013-11-14 | 2013-11-14 | Multi load is with driving countdown digital display signal lamp fault detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103559801B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679073A (en) * | 2016-04-20 | 2016-06-15 | 陈思思 | LED traffic signal lamp fault feedback method |
| CN105679074A (en) * | 2016-04-20 | 2016-06-15 | 张宏 | Road traffic signal lamp capable of being motored remotely |
| CN109884555B (en) * | 2017-12-06 | 2021-03-19 | 台达电子企业管理（上海）有限公司 | Direct-current centralized lighting system and method for measuring lamp state thereof |
| CN109739077B (en) * | 2018-11-27 | 2021-12-17 | 北京北大千方科技有限公司 | Safe starting method and circuit system of yellow flashing unit of annunciator system |
| CN110085046B (en) * | 2019-05-22 | 2023-12-26 | 无锡安邦电气股份有限公司 | Signal lamp fault detection circuit and method combining signal lamp and signal controller |
| CN112735159A (en) * | 2020-12-29 | 2021-04-30 | 武汉微创光电股份有限公司 | Fault monitoring method and device for signal lamp countdown timer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546483A (en) * | 2008-03-26 | 2009-09-30 | 中国科学院自动化研究所 | System and method for fault diagnosis of traffic signal controller |
| CN102509472A (en) * | 2011-11-03 | 2012-06-20 | 安徽科力信息产业有限责任公司 | Independent fault detection and processing circuit for intelligent traffic signal control machine |
| CN202331806U (en) * | 2011-11-03 | 2012-07-11 | 安徽科力信息产业有限责任公司 | Independent fault detection and processing circuit of intelligent traffic signal controller |
| CN102890870A (en) * | 2012-10-30 | 2013-01-23 | 重庆交通大学 | Self diagnosis method and device for faults of traffic signal control machine |
| CN103280117A (en) * | 2013-06-10 | 2013-09-04 | 西安费斯达自动化工程有限公司 | Intelligent fault data-logging and network alarm system of traffic lights |
| CN103337190A (en) * | 2013-06-11 | 2013-10-02 | 西安费斯达自动化工程有限公司 | Intelligent detection and alarming method for failure of traffic light |
-
2013
- 2013-11-14 CN CN201310574103.4A patent/CN103559801B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546483A (en) * | 2008-03-26 | 2009-09-30 | 中国科学院自动化研究所 | System and method for fault diagnosis of traffic signal controller |
| CN102509472A (en) * | 2011-11-03 | 2012-06-20 | 安徽科力信息产业有限责任公司 | Independent fault detection and processing circuit for intelligent traffic signal control machine |
| CN202331806U (en) * | 2011-11-03 | 2012-07-11 | 安徽科力信息产业有限责任公司 | Independent fault detection and processing circuit of intelligent traffic signal controller |
| CN102890870A (en) * | 2012-10-30 | 2013-01-23 | 重庆交通大学 | Self diagnosis method and device for faults of traffic signal control machine |
| CN103280117A (en) * | 2013-06-10 | 2013-09-04 | 西安费斯达自动化工程有限公司 | Intelligent fault data-logging and network alarm system of traffic lights |
| CN103337190A (en) * | 2013-06-11 | 2013-10-02 | 西安费斯达自动化工程有限公司 | Intelligent detection and alarming method for failure of traffic light |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103559801A (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103559801B (en) | Multi load is with driving countdown digital display signal lamp fault detection system | |
| CN103280117B (en) | Intelligent fault data-logging and network alarm system of traffic lights | |
| CN103337190B (en) | Intelligent detection and alarming method for failure of traffic light | |
| CN103376387A (en) | Transmission grid fault detection system and method based on internet of thing technology | |
| CN103559803B (en) | Multi load is with driving arrow signal lamp fault detection system | |
| CN202275129U (en) | On/off detection circuit for relay of smart electricity meter | |
| CN103884988A (en) | Battery pack fault detection device and detection method | |
| CN202995453U (en) | Battery management and acquisition subsystem of new energy vehicle | |
| CN104237645A (en) | Online monitoring system and method for insulation state of substation DC system | |
| CN104157086B (en) | A kind of detection stolen alarm device of cable and alarm method | |
| CN103559802B (en) | Varying duty is with drive singal lamp fault detection system | |
| CN103887888B (en) | A kind of fuse on-line monitoring system | |
| CN105355069A (en) | Signal lamp fault detection circuit with function of voltage and current detection, and detection control method therefor | |
| CN106569015A (en) | AC load detection circuit | |
| CN103645424A (en) | Line fault detecting system and method capable of achieving real-time interaction of three-phase data | |
| CN105355519A (en) | Intelligent permanent magnet switch drive circuit and control method therefor | |
| CN203838236U (en) | Device for detecting electric crossing of direct-current system | |
| CN204287418U (en) | A kind of circuit breaker switch state pick-up unit | |
| CN201075665Y (en) | Protection test control apparatus having functions of alternating-current/direct-current general use and checking the same term | |
| CN106483418A (en) | A kind of hardware check method and system of motor driver | |
| CN205901576U (en) | Igbt drive circuit | |
| CN103559804B (en) | Multi load is with driving disk signal lamp failure detection system | |
| CN205247633U (en) | Signal lamp failure detector circuit with voltage current detection function | |
| CN201315471Y (en) | High-voltage live displaying and locking device | |
| CN104297674A (en) | Hall switch test equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |