CN114441990A - Electric leakage detection device and method for traffic signal machine - Google Patents
Electric leakage detection device and method for traffic signal machine Download PDFInfo
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- CN114441990A CN114441990A CN202111594459.5A CN202111594459A CN114441990A CN 114441990 A CN114441990 A CN 114441990A CN 202111594459 A CN202111594459 A CN 202111594459A CN 114441990 A CN114441990 A CN 114441990A
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Abstract
The invention discloses a leakage detection device of a traffic signal machine, which comprises: the device comprises a main processor, a lamp set current detection circuit and a total current leakage detection circuit; the lamp group current detection circuit and the total current leakage detection circuit are respectively in communication connection with the main processor; the main processor generates a signal lamp lighting command and sends the signal lamp lighting command to the lamp group current detection circuit; the lamp group current detection circuit obtains an effective current value according to the received signal lamp lighting command and sends the effective current value to the main processor; the main current leakage detection circuit determines a leakage current effective value of the current power supply main power supply and sends the leakage current effective value to the main processor; the main processor comprises an electric leakage judging module, and the electric leakage judging module determines whether the electric leakage occurs in the traffic signal machine according to the received parameters. Because this application is in the same place hardware circuit and software module integration to make the system determine whether the traffic signal machine appears the electric leakage under the condition of not addding other check out test set, thereby reduced the complexity of system, promoted detection efficiency.
Description
Technical Field
The invention relates to the technical field of traffic hub safety, in particular to a device and a method for detecting electric leakage of a traffic signal machine.
Background
Troubleshooting of road traffic signal machine is the main work that the signal machine maintained always, fix a position the fault point fast in the middle of practical application, can provide the biggest convenient condition for troubleshooting work, the proportion that accounts for in the troubleshooting of in-service use to the trouble that the signal machine electric leakage arouses is great, because the signal lamp of signal control system control generally all is more than dozen several lamps, the problem that arouses the electric leakage can be any, it wastes time and energy inefficiency to investigate every link alone respectively, thereby cause the on-the-spot quick recovery difficulty, influence road traffic.
The existing annunciator faults caused by electric leakage generally adopt personnel experience to carry out troubleshooting, independent disconnection test is carried out on each lamp group link until a cable or a lamp group causing the electric leakage is found out to be replaced or repaired, or electric leakage detection auxiliary equipment is added on each lamp group link, the electric leakage condition is monitored in real time, electric leakage fault location is carried out, the troubleshooting is difficult and low in efficiency, the electric leakage can be detected in a single path through the electric leakage detection auxiliary equipment, the efficiency is improved, but the design complexity of the system greatly improves the cost, the fault maintenance of the part is also increased, and the electric leakage detection efficiency is reduced.
Disclosure of Invention
The embodiment of the application provides a device and a method for detecting electric leakage of a traffic signal machine. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
In a first aspect, an embodiment of the present application provides a leakage detecting device for a traffic signal, where the device includes:
the device comprises a main processor, a lamp set current detection circuit and a total current leakage detection circuit; wherein the content of the first and second substances,
the lamp group current detection circuit and the total current leakage detection circuit are respectively in communication connection with the main processor; wherein the content of the first and second substances,
the main processor is used for generating a signal lamp lighting command and sending the signal lamp lighting command to the lamp group current detection circuit;
the lamp group current detection circuit is used for detecting a target current value and a lamp lighting state of a lamp on a target link according to the received signal lamp lighting command, obtaining an effective current value according to the target current value, and sending the effective current value and the lamp lighting state of the target link to the main processor;
the main current leakage detection circuit is used for detecting whether the current of the alternating current in the current power supply main power supply is balanced or not, determining the effective value of the leakage current of the current power supply main power supply when the current is unbalanced, and sending the effective value of the leakage current to the main processor;
the main processor comprises an electric leakage judging module; wherein the content of the first and second substances,
the leakage judging module is used for judging whether the traffic signal machine leaks electricity according to the received effective leakage current value; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
Optionally, the lamp set current detection circuit includes a first micro control unit, a switch feedback detection unit, an electronic switch control unit, a hall current detection unit, an electronic switch set, a lamp set, and a power supply; wherein the content of the first and second substances,
the first micro control unit, the switch feedback detection unit, the electronic switch control unit, the Hall current detection unit, the electronic switch set, the power supply and the lamp set are electrically connected.
Optionally, the first micro control unit includes a lamp set current detection module; wherein, the first and the second end of the pipe are connected with each other,
the lamp group current detection module is used for establishing communication with the main processor, determining an electronic switch identifier on a target link to be started from the electronic switch set according to a received signal lamp lighting command, and sending the electronic switch identifier to the electronic switch control unit;
the electronic switch control unit is used for closing the corresponding electronic switch according to the received electronic switch identifier;
the switch feedback detection unit is used for judging whether an electronic switch corresponding to the electronic switch identifier on the target link is closed or not and sending a judgment result to the first micro control unit, and the first micro control unit determines the current lighting state according to the judgment result;
the electronic switches correspond to the lamps in the lamp group one by one and are used for controlling the lamps with different colors on the lamp group to be lightened;
the Hall current detection unit is used for acquiring a target current value according to a set sampling period and sending the target current value to the first micro control unit;
the power supply is used for supplying power;
and the lamp group current detection module is used for calculating the effective current value of the target link according to the received target current value.
Optionally, the first micro control unit is further configured to send the effective current value and the current lighting state to the main processor.
Optionally, the total current leakage detection circuit includes a second micro control unit, an AD detection circuit, a shaping amplification circuit, a collection circuit, a zero sequence current sensor, a power supply, and a lamp set; wherein the content of the first and second substances,
the second micro control unit, the AD detection circuit, the shaping amplification circuit, the acquisition circuit, the zero sequence current sensor, the power supply and the lamp bank are electrically connected in a set manner; wherein the content of the first and second substances,
the zero-sequence current sensor is used for judging whether the current of the alternating current in the current power supply main power supply is balanced or not, determining leakage current when the current is unbalanced, and obtaining a leakage current effective value after the leakage current is processed by the acquisition circuit, the shaping amplification circuit, the AD detection circuit and the second micro control unit in sequence;
and the second micro control unit is used for feeding back the effective value of the leakage current to the leakage judging module in real time.
Optionally, the determining, according to the received effective value of the leakage current, whether the traffic signal has the leakage current includes:
when the effective value of the leakage current is 0, judging that the traffic signal machine does not have leakage;
alternatively, the first and second electrodes may be,
and when the effective value of the leakage current is not 0, judging that the traffic signal machine has leakage.
Optionally, obtaining a change curve of the target link current value according to the received effective current value includes:
judging whether the received effective current value is stored or not;
if not, sampling the target current value of the target link for multiple times according to a preset sampling frequency to obtain multiple effective current values;
calculating the average value of the effective current values, determining the average value as a reference value, and marking and storing the reference value according to the link code of the target link;
and when the reference value exists, marking the received lighted lamp corresponding to the lighting state as a fault-free lamp, and recording the received effective current value in real time to obtain a change curve chart of the target link current value.
Optionally, determining a specific position of the target link leakage according to the effective current value includes:
the electric leakage judging module is also used for determining the current lighting link code according to the received lighting state when electric leakage occurs, marking the lighted lamp corresponding to the lighting state as a suspected electric leakage fault lamp and recording the suspected electric leakage fault lamp into a preset judgment maintenance table;
determining a link code of each suspected leakage fault lamp in the preset prejudgment maintenance table;
inquiring a reference value corresponding to the link code of each suspected leakage fault lamp;
and determining whether the lamp is a leakage fault lamp or not according to the received effective current value and the reference value.
Optionally, determining whether the lamp is a leakage fault lamp according to the received effective current value and the reference value, includes:
determining whether the received effective current value is within a preset error interval according to the reference value;
if yes, determining the lamp corresponding to the effective current value as a leakage fault lamp;
if not, determining that the lamp corresponding to the effective current value is not the leakage fault lamp.
In a second aspect, an embodiment of the present application provides a method for detecting leakage of a traffic signal, where the method includes:
the main processor generates a signal lamp lighting command and sends the signal lamp lighting command to the lamp group current detection circuit;
the lamp group current detection circuit detects a target current value and a lamp lighting state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, and sends the effective current value and the lamp lighting state of the target link to the main processor;
the main current leakage detection circuit detects whether the current of the alternating current in the current power supply main power supply is balanced, determines the effective value of the leakage current of the current power supply main power supply when the current is unbalanced, and sends the effective value of the leakage current to the main processor;
wherein, the main processor comprises an electric leakage judging module,
the electric leakage judging module judges whether the traffic signal machine has electric leakage or not according to the received effective value of the electric leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
in the embodiment of the application, the electric leakage detection device of the traffic signal machine firstly generates a signal lamp lighting command through a main processor and sends the signal lamp lighting command to a lamp group current detection circuit, then the lamp group current detection circuit detects a target current value and a point lamp state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, sends the effective current value and the lighting state of the target link to the main processor, then detects whether the current of alternating current in a current power supply main power supply is balanced through a total current electric leakage detection circuit, determines an effective value of the electric leakage current of the current power supply main power supply when the current is unbalanced, and sends the effective value of the electric leakage current to the main processor; the main processor comprises an electric leakage judging module; finally, judging whether the traffic signal machine leaks electricity or not by adopting an electric leakage judging module according to the received effective value of the leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value. Because this application is in the same place hardware circuit and software module integration to make the system determine whether the traffic signal machine appears the electric leakage under the condition of not addding other check out test set, thereby the complexity of system has been reduced, simultaneously when the electric leakage condition takes place, can fix a position the concrete position of electric leakage link fast, the signal machine trouble that the quick investigation electric leakage problem that field maintenance personnel can generate according to history arouses, thereby improve the judgement and the location of equipment electric leakage link greatly, quick recovery field device.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of an electrical leakage detection device of a traffic signal provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a lamp current detection circuit according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a process of a lamp current detection circuit according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a total current leakage detection circuit according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of a leakage detection method for a traffic signal provided in an embodiment of the present application;
fig. 6 is a schematic process diagram of a leakage detection process of a traffic signal provided in an embodiment of the present application.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The application provides a leakage detection device and method of a traffic signal machine, which aim to solve the problems existing in the related technical problems. In the technical scheme that this application provided, because this application is in the same place hardware circuit and software module integration, thereby make the system determine whether the electric leakage appears in the traffic signal machine under the condition that does not add other check out test set, thereby the complexity of system has been reduced, simultaneously when the electric leakage condition takes place, can fix a position the concrete position of electric leakage link fast, the signal machine trouble that the quick investigation electric leakage problem that the on-the-spot maintainer can generate according to the history arouses, thereby improve the judgement and the location of equipment electric leakage link greatly, quick recovery field device, adopt the exemplary embodiment to carry out the detailed description below.
Referring to fig. 1, a schematic structural diagram of a leakage detecting device of a traffic signal apparatus is provided in an embodiment of the present application. As shown in fig. 1, the apparatus includes: the device comprises a main processor, a lamp set current detection circuit and a total current leakage detection circuit; the lamp group current detection circuit and the total current leakage detection circuit are respectively in communication connection with the main processor; the main processor is used for generating a signal lamp lighting command and sending the signal lamp lighting command to the lamp group current detection circuit; the lamp group current detection circuit is used for detecting a target current value and a lamp lighting state of a lamp on a target link according to the received signal lamp lighting command, obtaining an effective current value according to the target current value, and sending the effective current value and the lamp lighting state of the target link to the main processor; the main current leakage detection circuit is used for detecting whether the current of the alternating current in the current power supply main power supply is balanced or not, determining the effective value of the leakage current of the current power supply main power supply when the current is unbalanced, and sending the effective value of the leakage current to the main processor; the main processor comprises an electric leakage judging module; the leakage judging module is used for judging whether the traffic signal machine has leakage according to the received leakage current effective value; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
In this embodiment, for example, as shown in fig. 2, the lamp set current detection circuit includes a first micro control unit, a switch feedback detection unit, an electronic switch control unit, a hall current detection unit, an electronic switch set, a lamp set, and a power supply; the first micro control unit, the switch feedback detection unit, the electronic switch control unit, the Hall current detection unit, the electronic switch set, the power supply and the lamp set are electrically connected.
Specifically, the first micro-control unit comprises a lamp group current detection module; the system comprises a lamp group current detection module, an electronic switch control unit and a signal lamp lighting command sending module, wherein the lamp group current detection module is used for establishing communication with a main processor, determining an electronic switch identifier on a target link to be started from an electronic switch set according to the received signal lamp lighting command, and sending the electronic switch identifier to the electronic switch control unit; the electronic switch control unit is used for closing the corresponding electronic switch according to the received electronic switch identifier; the switch feedback detection unit is used for judging whether an electronic switch corresponding to the electronic switch identifier on the target link is closed or not and sending a judgment result to the first micro control unit, and the first micro control unit determines the current lighting state according to the judgment result; the electronic switches correspond to the lamps in the lamp group one by one and are used for controlling the lamps with different colors on the lamp group to be lightened; the Hall current detection unit is used for acquiring a target current value according to a set sampling period and sending the target current value to the first micro control unit; the power supply is used for supplying power; and the lamp group current detection module is used for calculating the effective current value of the target link according to the received target current value.
It should be noted that the lamp group current detection circuit adopts a lamp group common hall current detection unit, an alternating current live wire is respectively controlled by 3 electronic switch thyristors after passing through a hall sensor, an optical coupler is adopted to detect the level after the switch, 220V voltage is generated after the electronic switch is turned on, the switch is judged to be turned on according to the voltage, the three switches respectively control red, yellow and green signal lamps, then the zero line is common, and the principle of one group of lamps is shown here. The traffic light control can turn on any one of the three lights in a time-sharing manner, and when one of the three lights is turned on and the other is turned off, the current detected at the moment is the link target current value of the turned-on light.
In one possible implementation, for example, as shown in fig. 3, after a lamp group current detection module in a first micro control unit in the lamp group current detection circuit is powered on, a sampling frequency of a current is first set, the lamp group current detection module communicates with a main control program in a main processor, and receives a lighting instruction from the main processor after communication, the lamp group current detection module controls to turn on an electronic switch of a certain link specified on the lamp group current detection circuit according to the lighting instruction, and detects a level after the electronic switch through a switch feedback detection unit to confirm that the electronic switch is turned on, the first micro control unit determines that a current lighting state is a lighting state, so as to determine that the current detected is a target current value of the turned on link, at this time, a target current value is obtained according to a set sampling period, and an acquired ac current value is calculated, so as to calculate an effective current value of the lamp control link, and the effective current value and the switch state are sent to the main control program together according to the communication protocol, and the lighting state and the effective current value of the current lamp are provided for the main control program.
In the embodiment of the present application, the first micro control unit is further configured to send the effective current value and the current lighting state to the main processor.
In the embodiment of the present application, for example, as shown in fig. 4, the total current leakage detection circuit includes a second micro control unit, an AD detection circuit, a shaping amplification circuit, a collection circuit, a zero sequence current sensor, a power supply, and a lamp set; the second micro control unit, the AD detection circuit, the shaping amplification circuit, the acquisition circuit, the zero sequence current sensor, the power supply and the lamp bank are electrically connected in a set manner; the zero-sequence current sensor is used for judging whether the current of the alternating current in the current power supply main power supply is balanced or not, determining leakage current when the current is unbalanced, and obtaining a leakage current effective value after the leakage current is processed by the acquisition circuit, the shaping amplification circuit, the AD detection circuit and the second micro control unit in sequence; and the second micro control unit is used for feeding back the effective value of the leakage current to the leakage judging module in real time.
It should be noted that the total current leakage detection circuit is a total electric loop of the whole lighting power supply system, detects the leakage current of the whole power supply, and adopts a zero sequence current sensor, a 220VAC live wire L and a zero wire N of the power supply system simultaneously penetrate through the zero sequence current sensor, and a power supply at the rear end of the zero sequence current sensor respectively supplies power to each lamp group link. When no leakage occurs, the vector sum of the current entering and exiting the zero sequence current sensor is balanced, the zero sequence current sensor has no voltage output, and no leakage current is generated. When any link is in electric leakage, the vector sum of the incoming current and the outgoing current flowing through the zero-sequence current sensor is unbalanced, the zero-sequence current sensor senses the generation of leakage current, the voltage signal is sent to the AD detection circuit through the amplification processing of the acquisition circuit and the shaping amplification circuit, and the effective value of the alternating current signal is calculated through the detected proportional current value by the second micro control unit, so that the effective value of the leakage current is calculated.
Specifically, when judging whether the traffic signal machine leaks electricity according to the received effective value of the leakage current, when the effective value of the leakage current is 0, judging that the traffic signal machine does not leak electricity; or, when the effective value of the leakage current is not 0, judging that the traffic signal machine has leakage.
Specifically, when no electric leakage occurs, when a change curve of a target link current value is obtained according to a received effective current value, whether the received effective current value is stored is judged firstly; if not, sampling the target current value of the target link for multiple times according to the preset sampling frequency to obtain multiple effective current values; and finally, when the reference value exists, marking the received lighted lamp corresponding to the lighting state as a fault-free lamp, and recording the received effective current value in real time to obtain a change curve chart of the target link current value. Specifically, the electric leakage determining module is further configured to, when electric leakage occurs, first determine a currently lit link code according to the received lighting state, mark a lit lamp corresponding to the lighting state as a suspected electric leakage fault lamp, record the suspected electric leakage fault lamp in a preset pre-judgment maintenance table, then determine a link code of each suspected electric leakage fault lamp in the preset pre-judgment maintenance table, then query a reference value corresponding to the link code of each suspected electric leakage fault lamp, and finally determine whether the electric leakage fault lamp is the electric leakage fault lamp according to the received effective current value and the reference value.
Specifically, when determining whether the lamp is a leakage fault lamp according to the received effective current value and the reference value, firstly, determining whether the received effective current value is within a preset error interval according to the target reference value; if yes, determining the lamp corresponding to the effective current value as a leakage fault lamp; if not, determining that the lamp corresponding to the effective current value is not the leakage fault lamp.
In the embodiment of the application, the electric leakage detection device of the traffic signal machine firstly generates a signal lamp lighting command through a main processor and sends the signal lamp lighting command to a lamp group current detection circuit, then the lamp group current detection circuit detects a target current value and a point lamp state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, sends the effective current value and the lighting state of the target link to the main processor, then detects whether the current of alternating current in a current power supply main power supply is balanced through a total current electric leakage detection circuit, determines an effective value of the electric leakage current of the current power supply main power supply when the current is unbalanced, and sends the effective value of the electric leakage current to the main processor; the main processor comprises an electric leakage judging module; finally, judging whether the traffic signal machine leaks electricity or not by adopting an electric leakage judging module according to the received effective value of the leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value. Because this application is in the same place hardware circuit and software module integration to make the system determine the traffic signal machine whether appear the electric leakage under the condition of not addding other check out test set, thereby reduced the complexity of system, when the electric leakage condition takes place, can confirm the concrete position of electric leakage link simultaneously, can be according to the quick annunciator trouble that the investigation electric leakage problem that history generated arouses, thereby improve the judgement and the location of equipment electric leakage link greatly, resume field device fast.
Fig. 5 is a schematic flow chart illustrating a method for detecting leakage of a traffic signal according to an exemplary embodiment of the present invention. The method comprises the following steps:
s101, a main processor generates a signal lamp lighting command and sends the signal lamp lighting command to a lamp group current detection circuit;
s102, the lamp group current detection circuit detects a target current value and a lighting state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, and sends the effective current value and the lighting state of the target link to a main processor;
s103, detecting whether the current of the alternating current in the current power supply main power supply is balanced by the total current leakage detection circuit, determining a leakage current effective value of the current power supply main power supply when the current of the alternating current in the current power supply main power supply is unbalanced, and sending the leakage current effective value to a main processor;
s104, the main processor comprises an electric leakage judging module; the electric leakage judging module judges whether the traffic signal machine has electric leakage or not according to the received effective value of the electric leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
Specifically, when judging whether the traffic signal machine leaks electricity according to the received effective value of the leakage current, firstly, when the effective value of the leakage current is 0, judging that the traffic signal machine does not leak electricity; or when the effective value of the leakage current is not 0, judging that the traffic signal machine has leakage.
Specifically, when a change curve of a target link current value is obtained according to a received effective current value, whether the received effective current value is stored is judged, if not, the target current value of the target link is sampled for multiple times according to a preset sampling frequency to obtain a plurality of effective current values, then the average value of the effective current values is calculated and determined as a reference value, the reference value is marked according to a link code of the target link and then stored, and finally when the reference value exists, the lighted lamp corresponding to the received lighting state is marked as a fault-free lamp, the received effective current value is recorded in real time, and the change curve of the target link current value is obtained.
Specifically, when a specific position of a target link leakage is determined according to an effective current value, firstly, when leakage occurs, the leakage judging module determines a currently lit link code according to a received lighting state, marks a lit lamp corresponding to the lighting state as a suspected leakage fault lamp, records the suspected leakage fault lamp into a preset judgment maintenance table, then determines a link code of each suspected leakage fault lamp in the preset judgment maintenance table, secondly, inquires a reference value corresponding to the link code of each suspected leakage fault lamp, and finally, determines whether the lamp is a leakage fault lamp according to the received effective current value and the reference value.
Specifically, when judging whether the lamp is a leakage fault lamp according to the received effective current value and the reference value, firstly, determining whether the received effective current value is within a preset error interval according to the reference value; if yes, determining the lamp corresponding to the effective current value as a leakage fault lamp; if not, determining that the lamp corresponding to the effective current value is not the leakage fault lamp.
In a possible implementation manner, for example, as shown in fig. 6, fig. 6 is a schematic block diagram of a process of detecting leakage of a traffic signal machine provided in the present application, first, a main processor sends a signal lamp lighting command to a lamp group current detection circuit, receives an effective current value and a lighting state from the lamp group current detection circuit, then determines an effective value of a leakage current of a current power supply main power supply from a main current leakage detection circuit, determines whether there is a leakage fault according to the effective value of the leakage current, and determines whether there is leakage in all currently-issued lights that are lighted when there is leakage, where the effective value of the leakage current is not 0, so as to determine whether there is leakage in all currently-issued lights. If not, judging whether the normal effective current value of the system lighting is stored or not, if not, sampling the effective current value of the normal link for multiple times under the condition of no electric leakage, calculating the average value of the normal lighting after sampling the current value of each path for multiple times, recording the average value in the system, taking the average value as a reference value of the current value for judging the electric leakage by the back logic, and marking the reference value.
If the current reference value is recorded under the condition of no electric leakage, the current lighting command is obtained at the moment, the current lighting lamp does not have the electric leakage phenomenon, the current lighting lamp is marked as a fault-free lamp, the current effective current value is recorded, a current real-time monitoring curve is formed, and the current change curve of each link is recorded all the time, so that a change curve of the link current value is formed, a troubleshooting basis is provided for large current caused by the aging of a subsequent cable, and the hidden trouble fault judgment and troubleshooting are facilitated.
If the system finds that leakage current is generated, acquiring a current lighting link code at the moment, marking all the lamps which are lighted at the moment as fault lamp marks with possible leakage, recording the fault lamp marks into a fault prejudgment maintenance table, then further screening and examining the lamps which are marked with faults, wherein when the leakage fault is generated, a plurality of lamps are simultaneously lighted, so that specific lamp links with the leakage fault are further screened and positioned according to historical record values, the normal current value of the corresponding link which is recorded before the fault does not occur is inquired according to the code which is listed as the fault mark link, namely a reference value, whether the current value of the link which is collected when the leakage current occurs is in an error range or not compared with the normal current value which is collected when the leakage does not occur is judged according to the reference value, and if the current value is larger than the normal record value, the link is indicated to have the leakage risk, the leaky link failure is logged. If the current leakage fault is not larger than the current leakage fault pre-judgment mark and is within the normal range, the current leakage fault pre-judgment mark of the link is eliminated, all links with possible problems of the pre-judgment mark are circularly eliminated, and therefore the purpose of finally positioning a lamp with a current leakage fault in one or more links is achieved, and rapid elimination and positioning are provided for the current leakage fault. The function monitors and inspects the leakage link in real time all the time in the system, even if the leakage is too large to cause system power failure, data in the inspection process can still be inspected after the system is started, and the positioned problematic range link can be provided, so that the workload of inspecting the line is reduced.
In the embodiment of the application, the electric leakage detection device of the traffic signal machine firstly generates a signal lamp lighting command through a main processor and sends the signal lamp lighting command to a lamp group current detection circuit, then the lamp group current detection circuit detects a target current value and a point lamp state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, sends the effective current value and the lighting state of the target link to the main processor, then detects whether the current of alternating current in a current power supply main power supply is balanced through a total current electric leakage detection circuit, determines an effective value of the electric leakage current of the current power supply main power supply when the current is unbalanced, and sends the effective value of the electric leakage current to the main processor; the main processor comprises an electric leakage judging module; finally, judging whether the traffic signal machine leaks electricity or not by adopting an electric leakage judging module according to the received effective value of the leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value. Because this application is in the same place hardware circuit and software module integration to make and determine whether the traffic signal machine appears the electric leakage under the condition of not addding other check out test set, thereby the complexity of system has been reduced, simultaneously when the electric leakage condition takes place, can fix a position the concrete position of electric leakage link fast, and simultaneously, the signal machine trouble that the quick investigation electric leakage problem that the field maintenance personnel can generate according to the history arouses, thereby improve the judgement and the location of equipment electric leakage link greatly, the quick recovery field device.
The present invention also provides a computer-readable medium having stored thereon program instructions that, when executed by a processor, implement the leakage detecting method of a traffic signal provided by the above-described respective method embodiments.
The present invention also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method for detecting leakage in a traffic signal of the above-described respective method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program to instruct related hardware, and the program for detecting leakage of a traffic signal may be stored in a computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.
Claims (10)
1. An electrical leakage detection apparatus for a traffic signal, the apparatus comprising:
the device comprises a main processor, a lamp set current detection circuit and a total current leakage detection circuit; wherein the content of the first and second substances,
the lamp group current detection circuit and the total current leakage detection circuit are respectively in communication connection with the main processor; wherein the content of the first and second substances,
the main processor is used for generating a signal lamp lighting command and sending the signal lamp lighting command to the lamp group current detection circuit;
the lamp group current detection circuit is used for detecting a target current value and a lamp lighting state of a lamp on a target link according to the received signal lamp lighting command, obtaining an effective current value according to the target current value, and sending the effective current value and the lamp lighting state of the target link to the main processor;
the main current leakage detection circuit is used for detecting whether the current of the alternating current in the current power supply main power supply is balanced or not, determining the effective value of the leakage current of the current power supply main power supply when the current of the alternating current in the current power supply main power supply is unbalanced, and sending the effective value of the leakage current to the main processor;
the main processor comprises a leakage judging module; wherein the content of the first and second substances,
the leakage judging module is used for judging whether the traffic signal machine has leakage according to the received leakage current effective value; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
2. The leakage detecting device according to claim 1, wherein the first signal detecting unit is a signal detecting circuit,
the lamp group current detection circuit comprises a first micro control unit, a switch feedback detection unit, an electronic switch control unit, a Hall current detection unit, an electronic switch set, a lamp group and a power supply; wherein the content of the first and second substances,
the first micro control unit, the switch feedback detection unit, the electronic switch control unit, the Hall current detection unit, the electronic switch set, the power supply and the lamp set are electrically connected.
3. The leakage detecting device according to claim 2, wherein the first signal detecting unit is a signal detecting circuit,
the first micro control unit comprises a lamp group current detection module; wherein the content of the first and second substances,
the lamp group current detection module is used for establishing communication with the main processor, determining an electronic switch identifier on a target link to be started from the electronic switch set according to the received signal lamp lighting command, and sending the electronic switch identifier to the electronic switch control unit;
the electronic switch control unit is used for closing the corresponding electronic switch according to the received electronic switch identifier;
the switch feedback detection unit is used for judging whether an electronic switch corresponding to the electronic switch identifier on the target link is closed or not and sending a judgment result to the first micro control unit, and the first micro control unit determines the current lighting state according to the judgment result;
the electronic switches correspond to the lamps in the lamp group one by one and are used for controlling the lamps with different colors on the lamp group to be lightened;
the Hall current detection unit is used for acquiring a target current value according to a set sampling period and sending the target current value to the first micro control unit;
the power supply is used for supplying power;
and the lamp group current detection module is used for calculating the effective current value of the target link according to the received target current value.
4. The leakage detecting device according to claim 3, wherein the first signal detecting unit is a signal detecting circuit,
the first micro control unit is further configured to send the effective current value and the current lighting state to the main processor.
5. The leakage detecting device according to claim 1, wherein the first signal detecting unit is a signal detecting circuit,
the total current leakage detection circuit comprises a second micro control unit, an AD detection circuit, a shaping amplification circuit, a collection circuit, a zero sequence current sensor, a power supply and a lamp set; wherein, the first and the second end of the pipe are connected with each other,
the second micro control unit, the AD detection circuit, the shaping amplification circuit, the acquisition circuit, the zero sequence current sensor, the power supply and the lamp bank are electrically connected in a set manner; wherein the content of the first and second substances,
the zero-sequence current sensor is used for judging whether the current of the alternating current in the current power supply main power supply is balanced or not, determining leakage current when the current is unbalanced, and obtaining a leakage current effective value after the leakage current sequentially passes through the acquisition circuit, the shaping amplification circuit, the AD detection circuit and the second micro control unit;
and the second micro control unit is used for feeding back the effective value of the leakage current to the leakage judging module in real time.
6. The apparatus according to claim 1, wherein said determining whether the traffic signal has an electrical leakage according to the received effective value of the leakage current comprises:
when the effective value of the leakage current is 0, judging that the traffic signal machine does not have leakage;
alternatively, the first and second electrodes may be,
and when the effective value of the leakage current is not 0, judging that the traffic signal machine has leakage.
7. The apparatus according to claim 1, wherein said obtaining a target link current value variation graph according to the received effective current value comprises:
judging whether the received effective current value is stored or not;
if not, sampling the target current value of the target link for multiple times according to a preset sampling frequency to obtain multiple effective current values;
calculating the average value of the effective current values, determining the average value as a reference value, and marking and storing the reference value according to the link code of the target link;
and when the reference value exists, marking the received lighted lamp corresponding to the lighting state as a fault-free lamp, and recording the received effective current value in real time to obtain a change curve of the target link current value.
8. The apparatus according to claim 1, wherein the determining a specific location of the target link leakage according to the effective current value comprises:
the electric leakage judging module is further used for determining a current lighting link code according to the received lighting state when electric leakage occurs, marking a lighted lamp corresponding to the lighting state as a suspected electric leakage fault lamp, and recording the suspected electric leakage fault lamp into a preset judgment maintenance table;
determining a link code of each suspected leakage fault lamp in the preset prejudgment maintenance table;
inquiring a reference value corresponding to the link code of each suspected leakage fault lamp;
and determining whether the lamp is a leakage fault lamp or not according to the received effective current value and the reference value.
9. The apparatus according to claim 8, wherein said determining whether the lamp is a leakage fault lamp based on the received effective current value and the reference value comprises:
determining whether the received effective current value is within a preset error interval according to the reference value;
if yes, determining that the lamp corresponding to the effective current value is a leakage fault lamp;
if not, determining that the lamp corresponding to the effective current value is not a leakage fault lamp.
10. A method of detecting leakage of a traffic signal, the method comprising:
the main processor generates a signal lamp lighting command and sends the signal lamp lighting command to the lamp group current detection circuit;
the lamp group current detection circuit detects a target current value and a lamp lighting state of a lamp on a target link according to the received signal lamp lighting command, obtains an effective current value according to the target current value, and sends the effective current value and the lamp lighting state of the target link to the main processor;
the main current leakage detection circuit detects whether the current of the alternating current in the current power supply main power supply is balanced or not, determines the effective value of the leakage current of the current power supply main power supply when the current of the alternating current in the current power supply main power supply is unbalanced, and sends the effective value of the leakage current to the main processor;
wherein the main processor comprises a leakage judging module,
the electric leakage judging module judges whether the traffic signal machine has electric leakage or not according to the received effective value of the electric leakage current; when no electric leakage exists, obtaining a change curve of a target link current value according to the received effective current value; and when electric leakage occurs, determining the specific position of the electric leakage of the target link according to the effective current value.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448117A (en) * | 2015-12-22 | 2016-03-30 | 青岛海信网络科技股份有限公司 | Signal machine and signal lamp link electric leakage detection method |
| CN107356883A (en) * | 2017-08-09 | 2017-11-17 | 安徽科力信息产业有限责任公司 | A kind of signal lamp failure detection means and method based on current effective value |
| CN108550270A (en) * | 2018-03-20 | 2018-09-18 | 青岛海信网络科技股份有限公司 | A kind of processing of traffic lights abnormality and retransmission method and traffic lights |
| CN112816776A (en) * | 2020-12-25 | 2021-05-18 | 连云港杰瑞电子有限公司 | Signal machine load fault detection device and method based on electric energy metering technology |
| CN113759288A (en) * | 2021-11-08 | 2021-12-07 | 深圳市德兰明海科技有限公司 | Leakage current detection circuit and method and leakage current detector |
-
2021
- 2021-12-23 CN CN202111594459.5A patent/CN114441990B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448117A (en) * | 2015-12-22 | 2016-03-30 | 青岛海信网络科技股份有限公司 | Signal machine and signal lamp link electric leakage detection method |
| CN107356883A (en) * | 2017-08-09 | 2017-11-17 | 安徽科力信息产业有限责任公司 | A kind of signal lamp failure detection means and method based on current effective value |
| CN108550270A (en) * | 2018-03-20 | 2018-09-18 | 青岛海信网络科技股份有限公司 | A kind of processing of traffic lights abnormality and retransmission method and traffic lights |
| CN112816776A (en) * | 2020-12-25 | 2021-05-18 | 连云港杰瑞电子有限公司 | Signal machine load fault detection device and method based on electric energy metering technology |
| CN113759288A (en) * | 2021-11-08 | 2021-12-07 | 深圳市德兰明海科技有限公司 | Leakage current detection circuit and method and leakage current detector |
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|---|---|
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