CN111462438B - Anti-theft alarm monitoring method for street lamp system line - Google Patents
Anti-theft alarm monitoring method for street lamp system line Download PDFInfo
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- CN111462438B CN111462438B CN202010276864.1A CN202010276864A CN111462438B CN 111462438 B CN111462438 B CN 111462438B CN 202010276864 A CN202010276864 A CN 202010276864A CN 111462438 B CN111462438 B CN 111462438B
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Abstract
The invention discloses a street lamp system line anti-theft alarm monitoring method which is realized by a street lamp system line anti-theft alarm monitoring system, wherein the street lamp system line anti-theft alarm monitoring system comprises an anti-theft monitoring host, a single lamp control terminal and an anti-theft alarm terminal, the street lamp system line anti-theft alarm monitoring method is sequentially carried out according to the sequence of firstly detecting an alternating current signal, then detecting a direct current signal and finally detecting a carrier signal, if the three kinds of detection have no signal and exceed a certain time period, judging that a corresponding line is cut off, namely stolen, sending an alarm signal, otherwise, judging that the line is normal. The invention combines the alternating current signal detection, the direct current signal detection and the carrier signal detection, effectively integrates the three detection methods, can realize the high-accuracy anti-theft monitoring of the street lamp system line, can adapt to different road condition requirements, can detect a certain branch cable in a segmented manner, and can detect a plurality of branch cables simultaneously.
Description
Technical Field
The invention relates to a monitoring method of a street lamp system, in particular to a high-accuracy anti-theft alarm monitoring method of a street lamp system line.
Background
In order to meet the development requirements of smart cities, the street lamp plays an important role as a necessary matching device for the cities. The requirement of the existing street lamp system on fine management is higher and higher, for example, the requirement on energy conservation and anti-theft is higher and higher.
The phenomenon that the cable of the street lamp system in the city is stolen by lawbreakers still happens occasionally, particularly in the small flow of people and newly-built roads, the problem that the cable is stolen frequently occurs, great financial loss is brought to the government, the street lamp illumination of the whole city is seriously influenced, and even some safety accidents are caused. How to discover that the cable is stolen in time and to process the stolen accident becomes a key problem for reducing the stolen accident of the cable.
The anti-theft alarm monitoring of the street lamp system line is an important means for realizing the anti-theft of the street lamp system cable, if the monitoring is accurate and timely, the anti-theft alarm monitoring system is beneficial to managers to find the specific position of a stolen line in time and prevent criminal behaviors in time, and has a very positive effect on the prevention in the later period.
Most of the existing street lamp systems have conditions for realizing the purpose of timely monitoring by reasonable software design, as shown in fig. 1, the existing street lamp systems have basic structures including a power distribution cabinet of a management center and anti-theft alarm terminals arranged on branch lines, the distribution of the branch lines is determined according to actual requirements, and the branch lines can be thinned to a certain distance range of a specific street or even a certain section of the street, so that more refined monitoring results can be realized. The system integrates various signal detection and control functions required by the street lamp, and is a conventional configuration of a modern street lamp system.
The traditional anti-theft alarm monitoring method for the street lamp system mainly comprises the following three methods: the method comprises the following steps of monitoring a first current signal, monitoring a direct current signal, and monitoring a carrier signal with electricity; the basic principles and drawbacks are explained below:
1. monitoring a current signal: the alternating current detection is added in the main machine of the power distribution cabinet, and when the current changes suddenly and does not return to zero, one line is cut off to form an alarm. The monitoring method is suitable for fault detection in night illumination time, but cannot detect the line running condition in the daytime when no electricity exists; meanwhile, due to the instability of the line current, such as the high-voltage sodium lamp and a cable with a landscape lamp, the actual stolen situation of the line is difficult to accurately judge due to frequent change of the line current, and false alarm is easily caused.
2. Monitoring a direct current signal: the method comprises the steps that a direct-current circuit is added in an anti-theft alarm host of the power distribution cabinet and is correspondingly connected with an anti-theft alarm terminal at the tail end, when alternating current is powered off, the current of the direct-current circuit is monitored in real time by the anti-theft alarm host or the anti-theft alarm terminal, and once the direct current is greatly reduced or returns to zero, an anti-theft alarm signal is sent. The monitoring method can realize monitoring under the conditions of alternating current and no alternating current, but because the direct current circuit depends on the cable line as a transmission medium, if the cable line has the conditions of electric leakage or low line impedance and the like, the condition of misinformation or no declaration is easy to occur; in addition, because a lot of equipment such as alternating current to direct current and charging storage batteries are needed, the possibility of false alarm caused by faults is also obviously increased, and therefore the accuracy is still possibly not high enough.
3. Monitoring carrier signals: the anti-theft alarm host and the single lamp control host of the power distribution cabinet adopt the power carrier communication technology to communicate with the anti-theft alarm terminal under the condition of commercial power to realize anti-theft monitoring, and realize monitoring in a mode of testing line impedance when no commercial power exists. The monitoring method has high false alarm rate when power is on due to line interference, simultaneously has various impedance parameters due to the diversification of lines, is difficult to adapt to general scenes, if the lines have large electric leakage phenomenon, adopts a switching power supply with poor quality and a large capacitance device in the lines, can cause huge influence on carrier communication, and causes false alarm due to short-time or continuous communication abnormity of power carrier. Although the problem can be solved moderately by increasing the device transmission power and increasing the number of communications, the power consumption and the alarm time of the system are increased, and the method is not suitable for popularization and application.
In addition, the three monitoring methods cannot realize the segmented detection of a certain branch cable, and only one of the branch cables can be detected when a plurality of branches appear in the middle of the cable.
In summary, the conventional anti-theft alarm monitoring method for the street lamp system line has the defects of low monitoring accuracy, difficulty in detecting a branch cable in a segmented manner and difficulty in detecting a plurality of branch cables simultaneously, and can only monitor the cable lines of specific lines and scenes, and cannot meet the anti-theft monitoring requirements of the street lamp cable lines under various different road conditions.
Disclosure of Invention
The invention aims to solve the problems and provide a road lamp system line anti-theft alarm monitoring method which is high in accuracy and can meet different road condition requirements.
The invention realizes the purpose through the following technical scheme:
a street lamp system line anti-theft alarm monitoring method is realized by a street lamp system line anti-theft alarm monitoring system, the street lamp system line anti-theft alarm monitoring system comprises an anti-theft monitoring host arranged in a power distribution cabinet, a single lamp control host, a single lamp control terminal arranged in a street lamp and an anti-theft alarm terminal arranged on a power utilization terminal line, a plurality of anti-theft alarm terminals are respectively and correspondingly connected with a certain cable line or a certain section of cable line to be monitored and are simultaneously and respectively and correspondingly connected with the anti-theft monitoring host and the single lamp control host, and the single lamp control terminal is correspondingly connected with the single lamp control host; the anti-theft alarm monitoring method for the street lamp system line comprises the following steps:
step 1, when the anti-theft monitoring host detects that any line has no alternating current, the anti-theft monitoring host outputs a direct current signal to the anti-theft alarm terminal of the corresponding line; the single lamp control host sends carrier signals to the corresponding single lamp control terminal and carries out carrier communication when detecting that any line has alternating current, and the single lamp control host does not send the carrier signals to any single lamp control terminal when detecting that all lines have no alternating current;
step 2, the anti-theft alarm terminal detects whether an alternating current signal exists, if the alternating current signal exists, the circuit is judged to be normal, and if the alternating current signal does not exist, the next step is carried out;
step 3, the anti-theft alarm terminal detects whether a direct current signal output by the anti-theft monitoring host exists, if so, the circuit is judged to be normal, and if not, the next step is carried out;
step 4, the anti-theft alarm terminal detects whether a carrier signal sent by the single lamp control host exists, if so, the circuit is judged to be normal, otherwise, the next step is carried out;
step 5, when the anti-theft monitoring host detects that the line has no alternating current, the carrier transmitter of the corresponding loop is opened, and a carrier signal is sent to the anti-theft alarm terminal of the corresponding line;
step 6, the anti-theft alarm terminal detects whether a carrier signal sent by the anti-theft monitoring host exists, if so, the line is judged to be normal, otherwise, the next step is carried out;
7, the anti-theft alarm terminal detects whether the duration time of the circuit without the direct current signal exceeds a first set time period, if so, the next step is carried out, otherwise, the step 3 is carried out;
step 8, the anti-theft alarm terminal detects whether the duration time of the carrier-free signal exceeds a second set time period, and if the duration time of the carrier-free signal exceeds the second set time period, a wireless communication process is started to realize wireless communication with the anti-theft monitoring host;
and 9, detecting whether the duration time of the carrier-free signal exceeds a third set time period by the anti-theft alarm terminal, judging that the corresponding line is cut off and stolen if the duration time of the carrier-free signal exceeds the third set time period, sending an anti-theft alarm carrier signal to the anti-theft monitoring host by the anti-theft alarm terminal or the anti-theft monitoring host, sending an alarm signal to a worker by the anti-theft alarm terminal or the anti-theft monitoring host, and otherwise, turning to the step 4.
Preferably, the first set time period and the second set time period are both 30 seconds, and the third set time period is 90 seconds. The reason for determining the preferred time of the time period is as follows: according to the industry requirements, a single lamp control system requires to accommodate 1024 lamps at most, and also requires 1024/8=128 according to 1 bit of each lamp; the carrier communication rate generally comprises 1200bps, 2400bps and 4800bps, and in order to ensure compatibility reliability, the slowest 1200bps calculation is adopted in design consideration, that is, each data packet is completely transmitted, 128 bytes × 10 bits/1200 bits need to be reserved and is approximately equal to 10S, the round trip time is 20S, the carrier sensing time of 1 communication time is reserved in consideration of the fact that interference cannot exist in the carrier transmission process, 30S is considered for a single time, that is, both the first set time period and the second set time period are set to 30S, and the whole system does not acquire an alarm signal for 3 consecutive times, that is, the third set time period is set to 90S.
The invention has the beneficial effects that:
the invention combines the alternating current signal detection, the direct current signal detection and the carrier signal detection, effectively integrates the three detection methods, can realize the high-accuracy anti-theft monitoring of the street lamp system line, can adapt to different road condition requirements, can detect a certain branch cable in a segmented manner, and can detect a plurality of branch cables simultaneously. The method has the following specific advantages:
1. the anti-theft alarm monitoring method combining the three detection methods has high alarm accuracy, and the carrier wave detection solves the problem that the traditional non-electric detection is influenced by line leakage and resistive load. The non-electric detection solves the problem that the capacitive load of the line affects the carrier wave, and the multiple technologies are complementary, so that the detection accuracy is obviously improved, and the applicability is wider.
2. The carrier detection is combined with the characteristics of a single lamp system, the carrier signal is sent when no alternating current exists in a corresponding line, the carrier signal is not sent under the condition that the alternating current exists in the line, the mutual influence and the mutual utilization of the carrier communication of the two systems are reduced, the communication interference is reduced, and the monitoring accuracy is high when the alternating current exists.
3. The non-electric detection solves the false alarm problem caused by unstable voltage caused by line impedance fluctuation caused by inductive and capacitive loads of the line.
4. In general, the anti-theft monitoring host sends a carrier signal, and the anti-theft alarm terminal is only responsible for receiving the carrier signal, so that the problem that a large-capacity battery needs to be added to the anti-theft alarm terminal due to the power consumption of carrier sending is solved.
5. The anti-theft alarm terminal starts a communication flow before finally judging that the cable is cut off, namely, the cable is stolen, so that the waiting time of a user for receiving an alarm signal is shortened.
Drawings
Fig. 1 is a block diagram of the anti-theft alarm monitoring system for the street lamp system line of the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the anti-theft alarm monitoring system for street lamp system lines of the invention comprises an anti-theft monitoring host arranged in a power distribution cabinet, a single-lamp control host, a single-lamp control terminal arranged in a street lamp and an anti-theft alarm terminal arranged in an electricity consumption end line, wherein a plurality of anti-theft alarm terminals are respectively and correspondingly connected with a certain cable line or a certain section of cable line to be monitored and are simultaneously and respectively and correspondingly connected with the anti-theft monitoring host and the single-lamp control host, the number and the installation positions of the anti-theft alarm terminals are determined according to the specific line to be monitored actually, and the single-lamp control terminal is correspondingly connected with the single-lamp control host;
the anti-theft alarm monitoring method for the street lamp system circuit comprises the following steps:
step 1, when the anti-theft monitoring host detects that any line has no alternating current, the anti-theft monitoring host outputs a direct current signal to the anti-theft alarm terminal of the corresponding line; the single lamp control host sends carrier signals to the corresponding single lamp control terminal and carries out carrier communication when detecting that any line has alternating current, and the single lamp control host does not send the carrier signals to any single lamp control terminal when detecting that all lines have no alternating current;
step 2, the anti-theft alarm terminal detects whether an alternating current signal exists, if the alternating current signal exists, the circuit is judged to be normal, and if the alternating current signal does not exist, the next step is carried out;
step 3, the anti-theft alarm terminal detects whether a direct current signal output by the anti-theft monitoring host exists, if so, the circuit is judged to be normal, and if not, the next step is carried out;
step 4, the anti-theft alarm terminal detects whether a carrier signal sent by the single lamp control host exists, if so, the circuit is judged to be normal, otherwise, the next step is carried out;
step 5, when the anti-theft monitoring host detects that the line has no alternating current, the carrier transmitter of the corresponding loop is opened, and a carrier signal is sent to the anti-theft alarm terminal of the corresponding line;
step 6, the anti-theft alarm terminal detects whether a carrier signal sent by the anti-theft monitoring host exists, if so, the line is judged to be normal, otherwise, the next step is carried out;
7, the anti-theft alarm terminal detects whether the duration time of the circuit without the direct current signal exceeds a first set time period for 30 seconds, if the duration time exceeds the first set time period, the next step is carried out, and if the duration time of the circuit without the direct current signal exceeds the first set time period, the step 3 is carried out;
step 8, the anti-theft alarm terminal detects whether the duration time of the carrier-free signal exceeds a second set time period for 30 seconds, and if the duration time of the carrier-free signal exceeds the second set time period, a wireless communication process is started to realize wireless communication with the anti-theft monitoring host;
and 9, detecting whether the duration time of the carrier-free signal exceeds a third set time period for 90 seconds by the anti-theft alarm terminal, judging that the corresponding line is cut off and stolen if the duration time of the carrier-free signal exceeds the third set time period, sending an anti-theft alarm carrier signal to the anti-theft monitoring host by the anti-theft alarm terminal, sending an alarm signal to a worker by the anti-theft alarm terminal or the anti-theft monitoring host, and otherwise, turning to the step 4.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (2)
1. A street lamp system line anti-theft alarm monitoring method is realized by a street lamp system line anti-theft alarm monitoring system, the street lamp system line anti-theft alarm monitoring system comprises an anti-theft monitoring host arranged in a power distribution cabinet, a single lamp control host, a single lamp control terminal arranged in a street lamp and an anti-theft alarm terminal arranged on a power utilization terminal line, a plurality of anti-theft alarm terminals are respectively and correspondingly connected with a certain cable line or a certain section of cable line to be monitored and are simultaneously and respectively and correspondingly connected with the anti-theft monitoring host and the single lamp control host, and the single lamp control terminal is correspondingly connected with the single lamp control host; the method is characterized in that: the anti-theft alarm monitoring method for the street lamp system line comprises the following steps:
step 1, when the anti-theft monitoring host detects that any line has no alternating current, the anti-theft monitoring host outputs a direct current signal to the anti-theft alarm terminal of the corresponding line; the single lamp control host sends carrier signals to the corresponding single lamp control terminal and carries out carrier communication when detecting that any line has alternating current, and the single lamp control host does not send the carrier signals to any single lamp control terminal when detecting that all lines have no alternating current;
step 2, the anti-theft alarm terminal detects whether an alternating current signal exists, if the alternating current signal exists, the circuit is judged to be normal, and if the alternating current signal does not exist, the next step is carried out;
step 3, the anti-theft alarm terminal detects whether a direct current signal output by the anti-theft monitoring host exists, if so, the circuit is judged to be normal, and if not, the next step is carried out;
step 4, the anti-theft alarm terminal detects whether a carrier signal sent by the single lamp control host exists, if so, the circuit is judged to be normal, otherwise, the next step is carried out;
step 5, when the anti-theft monitoring host detects that the line has no alternating current, the carrier transmitter of the corresponding loop is opened, and a carrier signal is sent to the anti-theft alarm terminal of the corresponding line;
step 6, the anti-theft alarm terminal detects whether a carrier signal sent by the anti-theft monitoring host exists, if so, the line is judged to be normal, otherwise, the next step is carried out;
7, the anti-theft alarm terminal detects whether the duration time of the circuit without the direct current signal exceeds a first set time period, if so, the next step is carried out, otherwise, the step 3 is carried out;
step 8, the anti-theft alarm terminal detects whether the duration time of the carrier-free signal exceeds a second set time period, and if the duration time of the carrier-free signal exceeds the second set time period, a wireless communication process is started to realize wireless communication with the anti-theft monitoring host;
and 9, detecting whether the duration time of the carrier-free signal exceeds a third set time period by the anti-theft alarm terminal, judging that the corresponding line is cut off and stolen if the duration time of the carrier-free signal exceeds the third set time period, sending an anti-theft alarm carrier signal to the anti-theft monitoring host by the anti-theft alarm terminal or the anti-theft monitoring host, sending an alarm signal to a worker by the anti-theft alarm terminal or the anti-theft monitoring host, and otherwise, turning to the step 4.
2. The street lamp system line burglar alarm monitoring method according to claim 1, characterized in that: the first set time period and the second set time period are both 30 seconds, and the third set time period is 90 seconds.
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