CN103996307A

CN103996307A - Method for automatically monitoring operation of traffic signal lamps by crossing different signal controllers

Info

Publication number: CN103996307A
Application number: CN201410194950.2A
Authority: CN
Inventors: 李定珍; 彭守斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-11
Filing date: 2014-05-11
Publication date: 2014-08-20

Abstract

The invention relates to a method for automatically monitoring operation of traffic signal lamps by crossing different signal controllers, and belongs to the fields of Internet of Things (IoT) and intelligent traffic. Several traditional automatic monitoring methods cannot be applied to practical environments, and a lot of fault detecting methods for signal lamps cannot be adapted to development of intelligent traffic. Via the IoT technology, communication technology and computer technology, a traditional automatic fault monitoring method is completely changed, defects and disadvantages in the prior art are overcome, and the brand new method is provided. A sensor detection unit, a controller unit and a communication unit are included in the method, different models and specifications of signal controllers can be crossed, signal monitoring is realized in the downstream of the signal controllers (i.e., between the signal controllers and the signal lamps), and a monitoring result is analyzed, calculated, identified, and automatically notified to an information receiver. The method can be widely applied to intelligent city application, traffic guiding application, traffic information collecting application and traffic signal control application.

Description

A kind of method of passing through the operation of unlike signal controller automatic monitoring test cross ventilating signal lamp

Technical field

The present invention relates to traffic signal light fault automatic testing method, relate to particularly a kind of method of passing through unlike signal controller automatic monitoring test cross ventilating signal lamp running status, belong to Internet of Things, intelligent transportation field.

Background technology

In field, wisdom city (intelligent transportation), it is a kind of widely used device that traffic signals are controlled, for the control to traffic signals.Traffic lights, as a kind of display system of traffic guidance system, in intelligent transportation system, have played basic, unique effect.Yet, for the method for some traditional automatic monitoring test cross ventilating signal lamp running statuses, cannot be applied to actual environment for various reasons, cause a large amount of signal lamp failure detection methods cannot adapt to the development of wisdom traffic;

, there is serious deficiency below in the monitoring methods such as comprehensive patrolling and examining in the past, telephone call and autonomous detections of signal controller:

(1) method of patrolling and examining, mainly relies on manual method, relies on regular visit, finds fault; This method cannot Real-Time Monitoring fault, and None-identified fault type, costly simultaneously, and the efficiency of management is extremely low;

(2) method of telephone call, is mainly the phone of announcing by manager, for example, 110 realize fault information acquisition; This method relies on master's consciousness of traffic participant, and the failure message of knowing is reported by phone, cannot guarantee the Real-Time Monitoring of fault, None-identified fault type, and the efficiency of management is low;

(3) the autonomous method detecting of signal controller, is mainly that the teleseme that has a Network Management Function by part is monitored the state of signal lamp, thus failure judgement type, and uploading data; The prerequisite key element that this method relies on be exactly teleseme must be intelligent network teleseme, also need the network signal machine of different brands can compatibility or interaction fault type simultaneously, this method cannot realize in real application, trace it to its cause and mainly contain: what 1. signal lamp failure monitoring required is all standing, and the existing intelligent machine of the signal controller in a region also has non intelligent machine, and multi-brand coexists; 2. the failure mode that signal controller can be monitored is also very single, and some fault cannot be monitored; 3. according to the standard of existing signal controller, the result of malfunction monitoring is internal system data, and outside cannot be called; 4. need to set up again a set of data acquisition and interactive system in the upstream of whistle control system, and need the open hardware and software interface of signal controller of various brands, each specification;

The method that unlike signal controller automatic monitoring test cross ventilating signal lamp operation troubles is passed through in realization is comprised of three parts: 1. sensor detects; 2. controller unit; 3. communication unit;

Ultimate principle is:

By to the perception of supply voltage and electric current, by the perception of controller box door open-close, by the perception of signal controller output lamp group voltage and electric current, by be carried in voltage on " red light, amber light, green light " and electric current perception, pass through the perception to environment temperature, rely on fault to identify the analytical calculation of unit and controller unit judges whether fault produces and the type of fault, and by communication unit by the receiver of running state information announcement.Collection signal modulating voltage and current value existing description the in the touring detection of documents and materials CN201310233635:< < traffic signal light fault intelligence, network alarm system > > about how, but the authentication method of fault is not described; Especially the method for identification signal lamp group malfunction is especially without any elaboration;

Data of literatures:

CN203299307U: a kind of electrical equipment fault pick-up unit

CN201310139879: the long-distance monitorng device based on embedded Web

CN201110184092: a kind of method of surveying rear simulation identification DC transmission line area inside/outside failure based on flat ripple inductance element property equation

CN201110144912: a kind of method of surveying rear simulation identification DC transmission line area inside/outside failure

CN201320168668: a kind of electric signal detection system of traffic signal controller signal lamp output port

CN201310233635: the touring detection of traffic signal light fault intelligence, network alarm system.

Summary of the invention

Object of the present invention, be thoroughly to abandon defect or the deficiency that prior art exists, a kind of brand-new method is provided, can pass through the signal controller of different model, different size, in the downstream of signal controller (that is: between signal controller and signal lamp), realize signal monitoring, and monitoring result is analyzed, calculated, identify, and automatically tell receiver; Extensively be satisfied with wisdom urban applications, traffic guidance application, traffic information collection application, traffic signals control application;

The present invention, by technology of Internet of things, the communication technology and computer technology, changes traditional fault automatic monitoring method completely; As shown in Figure 1, traditional fault automatically detects path and is: B1 b2 b3 b4, fault monitoring device cannot directly obtain fault-signal from B1; Need the bi-level treatment through signal controller and signal system, could by failure message, tell fault monitoring device from B3.Traditional fault automatic monitoring method relies on data acquisition and the processing of signal controller and signal system, cannot pass through all signal controllers and signal system;

The fault of the inventive method detects path automatically: B1 a1 (A1-1, A1-2) b4, fault monitoring device directly obtains fault-signal from B1, without the bi-level treatment through signal controller and signal system, thereby has realized the object of passing through unlike signal controller, unlike signal system;

As shown in Figure 1, at B1 place, obtain electric current and the voltage of green light, amber light, red light, by voltage perception 3. with current sensing 4., applied voltage electric current simultaneous techniques, be sent to respectively green light fault identify unit 8., amber light fault identifies unit , red light fault identifies unit , identify unit 8., , send the data after identifying to CPU (central processing unit) ; Meanwhile, identify unit 8., , by the data after identifying, at lamp group lock unit participation under be sent to lamp group fault and identify unit , lamp group fault identifies that the data after unit is identified send CPU (central processing unit) to ;

Simultaneously, by cabinet door state aware unit, 1. obtain the state of cabinet door, by environment temperature perception unit, 2. obtain environment temperature in rack, and by supply voltage unit 3. with current sensing unit 4., and applied voltage electric current simultaneous techniques, whether perception power supply is normal, and sends above data to CPU (central processing unit) ;

CPU (central processing unit) calculate by analysis and signal lamp operation troubles information exchange is crossed to communication unit send information receiver to.

Accompanying drawing explanation

Fig. 1 is the schematic block circuit diagram of " a kind of unlike signal controller automatic monitoring test cross ventilating signal lamp operation method that passes through ", in figure: 1. cabinet door state aware unit, 2. environment temperature perception unit, 3. supply voltage unit, 4. current sensing unit, 5. lamp group fault is identified unit, 6. CPU (central processing unit), 7. lamp group lock unit, 8. green light fault is identified unit, 9. amber light fault is identified unit, and 10. red light fault is identified unit.

Fig. 2 is the electric characteristic figure of flashing light, countdown lamp, in figure: the cycle is T, in cycle T, is always accompanied by the intermittence of Δ T; Flicker cycle is T1, normal voltage reference value U _def, operating voltage U; Normal voltage reference value I _def, working current I; Guarantee the sampling period T of signal _max< Δ T.

Claims

1. a method of passing through unlike signal controller automatic monitoring test cross ventilating signal lamp operation troubles, is characterized in that:

(1) at the output terminal B1 place of signal controller (being between signal controller and reddish yellow green light), obtain voltage and the electric current of red light, amber light, green light, guarantee that monitoring method and teleseme and signal system are irrelevant, thereby can pass through various types of signal machine and signal system;

(2) according to the concrete feature of traffic lights, traffic lights group, provide respectively green light, amber light, red light and lamp group (to explain: each lamp group is comprised of green light, amber light and a red light, for commanding the traffic of a phase place current; Bicycle lamp group, pedestrian lamp group are comprised of a green light and an amber light conventionally) fault authentication method;

(3) by the perception to cabinet temperature, cabinet door state, power supply state, study and judge and record trouble after maintenance situation.

2. automatic monitoring method according to claim 1 can pass through various types of signal machine and signal system, it is characterized in that:

(1) as shown in Figure 1, the fault of the inventive method automatically detects path and is: B1 a1 (A1-1, A1-2) b4, fault monitoring device directly obtains fault-signal from B1, without the bi-level treatment through signal controller and signal system, thereby has realized the method for passing through unlike signal controller, unlike signal system.

3. automatic monitoring method according to claim 1 can be identified green light, amber light, red light fault, it is characterized in that:

(1), according to the national standard of traffic lights, signal lamp mainly contains lamp all over the screen, arrow lamp, flashing light, countdown lamp; According to purposes, divide, have automotive lamp, bicycle lamp, pedestrian lamp; The authentication method of concrete judgement lamp failure:

Normal voltage reference value U _def, operating voltage U; Normal voltage reference value I _def, working current I; If U≤U _deftime, I<I _def, judge lamp failure; If U≤U _deftime, I≤I _def, judge that lamp is normal; If U<U _deftime, I<I _def, lamp state is indefinite;

According to the electrical specification of flashing light, countdown lamp, as shown in Figure 2, cycle T=1s, in cycle T, is always accompanied by the intermittence of Δ T; Concrete decision method is as follows:

Flicker cycle T1(is as 3s, 5s, 20s etc.), normal voltage reference value U _def, operating voltage U; Normal voltage reference value I _def, working current I; Guarantee the sampling period T of signal _max< Δ T/2, the following worksheet of record in flicker cycle:

Table 1:

t 0 1 2 3 4 5 6 .... T1 U ? ? ? ? ? ? ? ? ? I ? ? ? ? ? ? ? ? ?

If characteristic identical with accompanying drawing 2 normal.

4. automatic monitoring method according to claim 1 can be identified lamp group fault, it is characterized in that:

Traffic lights group is combined by signal lamp, and wherein automotive lamp group is generally comprised of green light, amber light, red light; Bicycle and pedestrian lamp group are generally comprised of red light and green light;

The state of lamp group had both reflected the state of lamp, also reflected the state of signal controller output;

According to the principle of work of traffic lights, under normal condition, it is normal that a signal lamp group has individual lamp at least within a fixed cycle; Therefore, according to following methods, can judge that whether lamp group is normal:

Guarantee that (3) power supply state is normal according to claim 1, described in decision method (1) as claimed in claim 3; As described in accompanying drawing 2, guarantee fixed cycle T _k> Δ T;

Under the precondition of above-mentioned (1) and (2), if in lamp group, the output current I≤I of any one lamp _def, show that lamp group is normal, on the contrary lamp group fault.

Automatic monitoring method according to claim 1 can study and judge and record trouble after maintenance situation, it is characterized in that:

Several immediate causes of traffic lights operation irregularity: one, lamp failure; Two, lamp group fault (signal controlling machine output fault); Three, power undesired; Four, artificial destruction;

CPU (central processing unit) after breaking down by communication unit, failure message is passed to the recipient of information, require scene to keep in repair;

Table 2:

From table 2, can find: completing the state variation that once maintenance must be experienced is: cabinet door is from reaching the variation of pass; From whether there being the disconnection/operation of closing of power supply, can judge the difficulty or ease that fault is got rid of; From malfunction, whether solve, can monitor the full maintenance success ratio of this fault.