CN111223278A - Urban traffic guardrail vibration sensing alarm and implementation method - Google Patents
Urban traffic guardrail vibration sensing alarm and implementation method Download PDFInfo
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Abstract
The invention relates to a city traffic guardrail vibration sensing alarm and a realization method, a plurality of vibration sensing alarms are respectively fixed on connecting columns of traffic guardrails, when the traffic guardrails generate vibration due to the impact of objects, after a spring weight is contacted with a vibration limiting ring, a microprocessor U1 quickly orders a vibration MEMS six-axis sensor J5 to enter a working state, a three-axis gyroscope and a three-axis acceleration sensor are integrated in the MEMS six-axis sensor J5, the angular velocity of inclination and the acceleration of displacement can be measured in three dimensions of X, Y, Z, the data of the angular velocity and the acceleration are transmitted to a microprocessor U1, if the microprocessor U1 judges that the data exceed a preset vibration alarm value, a vibration alarm signal is sent to an alarm processing end through a wireless communication module J4, thereby accurately judging the position of a traffic accident causing vibration, and quickly notify the relevant personnel to perform the treatment.
Description
Technical Field
The invention provides a city traffic guardrail vibration sensing alarm with double vibration sensors and a low-power consumption wireless sensing technology and an implementation method thereof, which are used for monitoring whether a city traffic guardrail is collided and damaged.
Background
The urban traffic guardrail is a traffic safety facility arranged at the outer side of a road shoulder, a traffic separation belt, a sidewalk curb and the like. The traffic guardrail is arranged on the urban road, and the safety of driving and pedestrians is improved by longitudinally separating the road. The guardrail is divided into two kinds: the opposite lane middle isolation guardrail and the roadside guardrail.
The function of the isolation guardrail in the middle of the opposite lane: firstly, the front collision of the opposite vehicles can be prevented; secondly, the pedestrian can be prevented from crossing the road at will, and traffic accidents are avoided.
The effect of roadside guardrail: firstly, sight line induction can be performed on a driver, so that the driver can be helped to operate correctly, and the vehicle is prevented from rushing out of the road to cause a rollover accident; and secondly, isolating pedestrians and vehicles to protect the pedestrians and the vehicles from being damaged.
A vehicle impacting a traffic barrier may damage both the vehicle, passengers, and the barrier itself.
The traffic guardrail absorbs collision energy through self-deformation or vehicle climbing, so that the driving direction of the vehicle is changed, the vehicle is prevented from going out of the road or entering an opposite lane, and the injury to passengers is reduced to the maximum extent. Traffic barriers are therefore used to protect pedestrians or cyclists, in addition to vehicles.
In actual life, the traffic guardrail is always impacted, damaged, moved and the like, so that the normal use of the guardrail is influenced. The deformed and moved guardrails usually encroach on a part of a motor vehicle lane or a non-motor vehicle lane, and passing vehicles have to slow down and pass slowly, so that traffic is influenced, even traffic accidents are caused, and the potential traffic hazard is caused. Therefore, timely supervision and maintenance of the traffic guardrail are very necessary, and the maintenance of the traffic guardrail in a normal state is very necessary work.
The existing traffic guardrail vibration sensing alarm system generally has the commonalities in the following aspects: 1) the monitoring and alarming device is used for monitoring and alarming waveform guardrails on the road shoulder sides of expressways and intercity roads, and the vibration sensing alarm is arranged on the back surfaces of the guardrails. 2) Because the highway is generally longer in length, the distances between adjacent monitoring nodes are far, and the transmission mode of the alarm signal adopts the transmission mode of a wireless +4G public network. 3) The main purpose is to judge the position of the traffic accident through the alarm signal condition and the position when the guardrail is collided. 4) Because the distance of each vibration sensing alarm is relatively far, two power supply modes, namely a solar battery or a lithium battery, are adopted.
It can be seen from the above characteristics that the existing traffic guardrail vibration sensing alarm and system have the following disadvantages:
1) all adopt the vibrations sensor components and parts of marketing to come the perception vibrations, this vibrations sensor components and parts are the electric drive, set up and just can work in relevant circuit, consequently are in operating condition all the time, and power consumption is great. 2) Because the alarm is arranged in the field, the capacity of the power supply part is generally larger, the volume of the whole alarm is huge, and meanwhile, the investment and maintenance cost of the whole system are higher.
3) Because the distance of each alarm is far, when the position of the traffic accident is between the two alarms, enough vibration cannot be caused to enable the alarms to sense and alarm, and the position of the traffic accident and the position of the accident cannot be judged.
Disclosure of Invention
In view of the conditions and the defects of the prior art, the invention provides a vibration sensing alarm for an urban traffic guardrail and an implementation method thereof, and the invention designs a corresponding scheme comprising two stages of vibration sensors aiming at the characteristics of the traffic guardrail on an urban road, wherein the first-stage sensor is a self-made mechanical contact type sensor which is originally designed, the second-stage sensor is a commercially available MEMS six-axis sensor, and the vibration sensors can accurately sense the vibration of the guardrail, the intensity of the vibration and the position where the vibration occurs, so that the position of a traffic accident causing the vibration is accurately judged, the effective, real-time and accurate monitoring on the traffic guardrail is formed, and the alarm has the advantages of simple structure, small volume and convenient installation.
In order to realize the purchase, the technical scheme adopted by the invention is as follows: a vibration sensing alarm for an urban traffic guardrail comprises an antenna, an antenna fixing base, a box body upper cover, a box body, a battery pack, a main board and a vibration sensor II, wherein the vibration sensor II is composed of an MEMS six-axis sensor J5;
the method is characterized in that: the device also comprises a vibration sensor I and a control circuit;
the vibration sensor I is composed of a spring heavy hammer, a vibration limiting ring and a spring heavy hammer fixing small plate;
the antenna is fixed on the upper cover of the box body through the antenna fixing base, the upper cover of the box body is fixed on the box body, and a battery pack, a vibration limiting ring, a spring heavy hammer fixing small plate, an MEMS six-axis sensor J5 and a control circuit are respectively fixed on a main board in the box body;
the vibration limiting ring and the spring heavy hammer fixing small plate are arranged at intervals,
the spring end of the spring heavy hammer is connected with the spring heavy hammer fixing small plate, and the heavy hammer end of the spring heavy hammer is arranged in the vibration limiting ring;
the control circuit comprises a microprocessor U1, a battery power supply circuit, a spring weight wiring terminal J1, an interface J2, an interface J3, a wireless communication module J4, an MEMS six-axis sensor J5, a communication address encoder J6, a vibration limiting ring wiring terminal J7 and an indicator light circuit;
the control circuit is specifically connected as follows: the pin 1, the pin 9, the pin 24, the pin 36 and the pin 48 of the microprocessor U1 are respectively connected with one end of a capacitor C4, a capacitor C5, a capacitor C46 and a capacitor C7 and are connected with a +3V power supply of a battery power supply circuit, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the pin 5 of the microprocessor U1 is connected with one end of a resistor R3, a quartz crystal Y1 and a capacitor C2, the other end of the capacitor C2 is connected with one end of the capacitor C2 and ground, the other end of the capacitor C2 is connected with the resistor R2, the other end of the capacitor C2 is connected with the ground, the pin 20 of the microprocessor U2 is grounded through the resistor R2, the pin 7 of the microprocessor U2 is connected with one end of the capacitor C2 and the resistor R2, the other end of the resistor R2 is connected with the +3V power supply, and the pin 20 of the microprocessor U2 is grounded through the pin 44, the pin 23, the pin 35 and the pin;
one end of a resistor R6 of the indicating lamp circuit is connected with a +3V power supply, and the other end of a resistor R6 is connected with a pin 2 of a microprocessor U1 through a light-emitting diode LD 1;
the pin 1 of the wireless communication module J4 is grounded, the pin 12 is connected with a +3V power supply, and the pins 2 to 11 are sequentially connected corresponding to the pins 21, 22, 19, 14, 17, 16, 15, 18, 13 and 12 of the microprocessor U1;
the pin 5 of the MEMS six-axis sensor J5 is grounded, the pin 6 is connected with a +3V power supply, and the pin 1, the pin 2, the pin 3 and the pin 4 are sequentially connected corresponding to the pin 40, the pin 41, the pin 42 and the pin 43 of the microprocessor U1;
the 1 pin of the interface J2 is grounded, the 4 pin is connected with a +3V power supply, the 2 pin is connected with the 31 pin of the microprocessor U1, and the 3 pin is connected with the 30 pin of the microprocessor U1;
the 5 pin of the interface J3 is grounded, the 1 pin is connected with a +3V power supply, the 2 pin is connected with the 34 pin of the microprocessor U1, the 3 pin is connected with the 7 pin of the microprocessor U1, and the 4 pin is connected with the 37 pin of the microprocessor U1;
the spring weight is connected with the 46 feet of the microprocessor U1 through the 1 feet to the 16 feet of the spring weight wiring terminal J1, and the vibration limiting ring is grounded through the 1 feet to the 8 feet of the vibration limiting ring wiring terminal J7.
An implementation method of a vibration sensing alarm for an urban traffic guardrail is characterized by comprising the following steps:
fixing a plurality of vibration sensing alarms on connecting columns of traffic guardrails respectively, wherein the plurality of vibration sensing alarms are communicated with an alarm processing end through respective wireless communication modules J4, and the alarm processing end is connected with a monitoring command center by utilizing the existing urban traffic signal network to form an alarm system;
1) obtaining a vibration signal, wherein a two-stage vibration sensor is arranged IN a vibration sensing alarm, a vibration sensor I and a vibration sensor II are arranged IN the vibration sensing alarm, when a traffic guardrail generates vibration due to impact of an object, a spring heavy hammer of the vibration sensor I inevitably swings due to inertia, when the swinging amplitude reaches a certain degree, the spring heavy hammer is IN contact with a vibration limiting ring, the vibration limiting ring IN a circuit is grounded, the spring heavy hammer is connected with a 46-pin input end IN01 of a microprocessor U1, after the spring heavy hammer is IN contact with the vibration limiting ring, the IN01 end of the microprocessor U1 is grounded, the microprocessor U1 obtains the vibration signal, the microprocessor U1 is immediately awakened, at the moment, the microprocessor U1 rapidly orders an MEMS six-axis sensor J5 of the vibration sensor II to enter a working state, a three-axis gyroscope and a three-axis acceleration sensor are integrated IN the MEMS six-axis sensor J5, Y, Z, measuring the angular velocity of the inclination and the acceleration of the displacement in three dimensions, filtering and calculating by an internal processor, and transmitting the data of the angular velocity and the acceleration to the microprocessor U1, the microprocessor U1 can obtain the inclination degree and the intensity of the movement of the guardrail through the data, if the microprocessor U1 judges that the data exceed the preset vibration alarm value, namely when the guardrail movement distance exceeds 0.5 meter or the inclination exceeds 30 degrees, the microprocessor U1 sends a vibration alarm signal to the alarm processing end through the wireless communication module J4;
because the vibration sensing alarm is powered by a battery and needs to reduce power consumption, the microprocessor U1 is in a sleep state when a vibration signal is not received;
when the guardrail is slightly vibrated by a vehicle passing through a road surface, the spring heavy hammer does not swing greatly and can not be contacted with the vibration limiting ring, so that the microprocessor U1 is in a low-power-consumption sleep state for a long time, and the battery can work for a long time;
2) according to the communication mechanism of the vibration sensing alarms, alarm signals sent by a plurality of vibration sensing alarms are all transmitted to nearby alarm processing ends, one alarm processing end is communicated with a plurality of vibration sensing alarms at the same time, and a circuit board of each vibration sensing alarm is provided with a communication address encoder J6, so that each vibration sensing alarm can be endowed with different numbers, namely different addresses, and the addresses represent the specific positions of the traffic guardrails where the vibration sensing alarms are located;
communication between vibrations sensing alarm and the warning processing end adopts timing communication mode to go on one by one, under the normal operating conditions, 0 point begins to communicate once every 6 hours every day, send the heartbeat data package by vibrations sensing alarm, adjacent vibrations sensing alarm conveys in proper order, time interval is 10 seconds, the warning processing end sends the response data package after receiving, vibrations sensing alarm receives the response data package after, send and confirm the data package, a node communication finishes, every vibrations sensing alarm is after communication finishes, microprocessor U1 gets into the sleep state promptly, timing communication's purpose is: whether each vibration sensing alarm is in a normal state or not is regularly confirmed, and when the alarm is damaged or a battery is not charged, the vibration sensing alarm can be timely found out;
when the vibration alarm caused by the collision reason is transmitted to the alarm processing end, the alarm processing end transmits corresponding data to the monitoring center for disposal through the existing traffic signal special network;
3) a vibration center position judging method is characterized in that the length of an existing urban traffic guardrail is generally 3 meters, investment cost is comprehensively considered, the arrangement interval of vibration sensing alarms is preferably 9 meters, each vibration sensing alarm is called as a vibration node, when a collision traffic accident happens, the guardrail inevitably moves and inclines, and corresponding signals are sent to an alarm processing end from a plurality of vibration nodes and are transmitted to a monitoring center through a traffic network;
because the distance between each node and the position where the collision occurs is different, the corresponding inclination and vibration intensity are different inevitably, the intensity of the vibration sensed by the node closest to the collision position is maximum inevitably, the intensity of the vibration sensed by other nodes is weakened in sequence according to the distance, and the geographical center position where the vibration collision occurs can be simply and accurately judged by calculation at the monitoring center according to the serial number of each node, and then related personnel are informed to go to the site of the corresponding position to deal with the position, the reason of the collision is tracked, and the normal state and the order are recovered.
The invention has the beneficial effects that:
the invention designs a corresponding scheme comprising two-stage vibration sensors aiming at the characteristics of traffic guardrails on urban roads, wherein the first-stage sensor is a self-made mechanical contact type sensor, and the vibration condition is less, so that the circuit is started to work only when a spring heavy hammer is in contact with a vibration limiting ring, the circuit is in a dormant state at ordinary times, the power consumption of the circuit is greatly reduced, the later maintenance workload is greatly reduced, and the wide application in cities is possible. The secondary sensor is a commercially available MEMS six-axis sensor.
The invention can accurately sense the vibration of the guardrail, the intensity of the vibration and the position where the vibration occurs, thereby accurately judging the position of a traffic accident causing the vibration, rapidly informing related personnel to deal with the traffic accident, and providing reliable guarantee for the safety of urban traffic; meanwhile, the functional waste of a common vibration sensing alarm and a system is saved, the cost of city management is saved, and the urban vibration sensing alarm is convenient to popularize and use in a large range.
The vibration sensing alarm has simple structure, small volume and convenient installation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the interior of the case according to the present invention;
FIG. 3 is a schematic structural diagram of a vibration sensor I according to the present invention;
FIG. 4 is a control circuit diagram of the present invention;
FIG. 5 is a block diagram of the electrical connections that make up the alarm system of the present invention;
fig. 6 is a state diagram of the present invention in use.
Detailed Description
As shown in fig. 1 to 4, a vibration sensing alarm for an urban traffic guardrail, wherein the vibration sensing alarm 1 comprises an antenna 1-1, an antenna fixing base 1-2, a box body upper cover 1-3, a box body 1-4, a battery pack 1-5, a main board 1-6 and a vibration sensor II, and the vibration sensor II is composed of an MEMS six-axis sensor J5; the device also comprises vibration sensors I1-7 and a control circuit.
The vibration sensor I1-7 is composed of a spring heavy hammer 1-7-1, a vibration limiting ring 1-7-2 and a spring heavy hammer fixing small plate 1-7-3;
the antenna 1-1 is fixed on the box body upper cover 1-3 through the antenna fixing base 1-2 by a screw, the box body upper cover 1-3 is fixed on the box body 1-4 through a screw, and a battery pack 1-5, a vibration limiting ring 1-7-2, a spring heavy hammer fixing small plate 1-7-3, an MEMS six-axis sensor J5 and a control circuit are respectively fixed on a main board 1-6 in the box body 1-4;
the vibration limiting ring 1-7-2 and the spring weight fixing small plate 1-7-3 are arranged at intervals, the spring end of the spring weight 1-7-1 is connected with the spring weight fixing small plate 1-7-3, and the weight end of the spring weight 1-7-1 is arranged in the vibration limiting ring 1-7-2.
The control circuit comprises a microprocessor U1, a battery power supply circuit, a spring weight wiring terminal J1, an interface J2, an interface J3, a wireless communication module J4, a MEMS six-axis sensor J5, a communication address encoder J6, a vibration limiting ring wiring terminal J7 and an indicator light circuit.
The control circuit is specifically connected as follows: the pin 1, the pin 9, the pin 24, the pin 36 and the pin 48 of the microprocessor U1 are respectively connected with one end of a capacitor C4, a capacitor C5, a capacitor C46 and a capacitor C7 and are connected with a +3V power supply of a battery power supply circuit, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the pin 5 of the microprocessor U1 is connected with one end of a resistor R3, a quartz crystal Y1 and a capacitor C2, the other end of the capacitor C2 is connected with one end of the capacitor C2 and ground, the other end of the capacitor C2 is connected with the resistor R2, the other end of the capacitor C2 is connected with the ground, the pin 20 of the microprocessor U2 is grounded through the resistor R2, the pin 7 of the microprocessor U2 is connected with one end of the capacitor C2 and the resistor R2, the other end of the resistor R2 is connected with the +3V power supply, and the pin 20 of the microprocessor U2 is grounded through the pin 44, the pin 23, the pin 35 and the pin;
one end of a resistor R6 of the indicating lamp circuit is connected with a +3V power supply, and the other end of a resistor R6 is connected with a pin 2 of a microprocessor U1 through a light-emitting diode LD 1;
the pin 1 of the wireless communication module J4 is grounded, the pin 12 is connected with a +3V power supply, and the pins 2 to 11 are sequentially connected corresponding to the pins 21, 22, 19, 14, 17, 16, 15, 18, 13 and 12 of the microprocessor U1;
the pin 5 of the MEMS six-axis sensor J5 is grounded, the pin 6 is connected with a +3V power supply, and the pin 1, the pin 2, the pin 3 and the pin 4 are sequentially connected corresponding to the pin 40, the pin 41, the pin 42 and the pin 43 of the microprocessor U1;
the 1 pin of the interface J2 is grounded, the 4 pin is connected with a +3V power supply, the 2 pin is connected with the 31 pin of the microprocessor U1, and the 3 pin is connected with the 30 pin of the microprocessor U1;
the 5 pin of the interface J3 is grounded, the 1 pin is connected with a +3V power supply, the 2 pin is connected with the 34 pin of the microprocessor U1, the 3 pin is connected with the 7 pin of the microprocessor U1, and the 4 pin is connected with the 37 pin of the microprocessor U1;
the spring weight 1-7-1 is connected with the 46 pin of the microprocessor U1 through the 1 pin to the 16 pin of the spring weight connecting terminal J1, and the vibration limiting ring 1-7-2 is grounded through the 1 pin to the 8 pin of the vibration limiting ring connecting terminal J7.
As shown in fig. 5 and 6, a method for implementing a vibration sensing alarm for an urban traffic guardrail comprises the following steps:
fixing a plurality of vibration sensing alarms 1 on the top ends of a plurality of connecting columns in a traffic guardrail 2 respectively, communicating the plurality of vibration sensing alarms 1 with an alarm processing end through respective wireless communication modules J4, and connecting the alarm processing end with a monitoring command center by utilizing the existing urban traffic signal network to form an alarm system;
1) the acquisition of the vibration signal is carried out,
the vibration sensing alarm 1 is internally provided with two stages of vibration sensors, namely a vibration sensor I1-7 and a vibration sensor II, when a traffic guardrail generates vibration due to impact of an object, a spring heavy hammer 1-7-1 of the vibration sensor I1-7 inevitably swings due to inertia, and when the swinging amplitude reaches a certain degree, the vibration sensor I contacts with a vibration limiting ring 1-7-2; IN the circuit, a vibration limiting ring 1-7-2 is grounded, a spring weight 1-7-1 is connected with a 46-pin input end IN01 of a microprocessor U1, after the spring weight 1-7-1 is contacted with the vibration limiting ring 1-7-2, the IN01 end of the microprocessor U1 is grounded, the microprocessor U1 obtains a vibration signal, the vibration sensing alarm 1 is powered by a battery and needs to reduce power consumption as much as possible, so the microprocessor U1 is IN a sleep state when the vibration signal is not received, the microprocessor U1 is immediately awakened after the vibration signal is obtained, at the moment, the microprocessor U1 quickly orders a vibration sensor II, namely an MEMS six-axis sensor J5 to enter a working state, a three-axis gyroscope and a three-axis acceleration sensor are integrated IN the MEMS six-axis sensor J5, the inclined angular velocity and the acceleration when displacement occurs can be measured IN three dimensions of X, Y, Z, the useful data of the angular velocity and the acceleration are transmitted to the microprocessor U1 through the filtering and calculation of an internal processor, the microprocessor U1 can know the inclination degree and the moving intensity of the guardrail through the data, and if the microprocessor U1 judges that the data exceed the preset vibration alarm value, namely when the moving distance of the guardrail where the vibration sensing alarm 1 is located exceeds 0.5 meter or the inclination degree exceeds 30 degrees, the microprocessor U1 sends a vibration alarm signal to an alarm processing end through the wireless communication module J4;
when the guardrail is slightly vibrated by a vehicle passing through a road surface, the spring heavy hammer 1-7-1 does not swing greatly and can not be contacted with the vibration limiting ring 1-7-2, so that the microprocessor U1 is in a low-power-consumption sleep state for a long time, and the battery can work for a long time;
2) the communication mechanism of the shock sensing alarm is,
alarm signals sent by a plurality of vibration sensing alarms 1 are all transmitted to nearby alarm processing ends, one alarm processing end can be simultaneously communicated with 510 vibration sensing alarms 1, a communication address encoder J6 is arranged on a circuit board of each vibration sensing alarm 1, each vibration sensing alarm 1 can be given different numbers, namely different addresses, by arranging the communication address encoder J6, and the addresses represent the specific positions of traffic guardrails where the vibration sensing alarms 1 are located;
communication between vibrations sensing alarm 1 and the warning processing end adopts timing communication mode to go on one by one, under the normal operating condition, 0 point begins to communicate once every 6 hours every day, send the adjacent alarm of heartbeat data package and convey in proper order by vibrations sensing alarm 1, the time interval is 10 seconds, the warning processing end sends the response data package after receiving, vibrations sensing alarm 1 receives the response data package after, send and confirm the data package, the communication of this alarm is ended, every vibrations sensing alarm 1 is after communication, microprocessor U1 gets into the sleep state promptly, timing communication's purpose is: whether each vibration sensing alarm is in a normal state or not can be regularly confirmed, and when the alarm is damaged or a battery is not charged, the vibration sensing alarm can be timely found out;
when the vibration alarm caused by the collision reason is transmitted to the alarm processing end, the alarm processing end summarizes corresponding data, transmits the data through the existing special traffic signal network and transmits the data to the monitoring center for disposal;
3) a method for judging the position of a vibration center,
the length of the existing urban traffic guardrail is generally 3 meters, the investment cost is comprehensively considered, the arrangement interval of the vibration sensing alarm devices 1 is preferably 9 meters, each vibration sensing alarm device 1 is called a vibration node, the guardrail is inevitably moved and inclined when a collision traffic accident occurs, and corresponding signals are sent to an alarm processing end from a plurality of vibration nodes and then are transmitted to a monitoring center through a traffic network;
because the distance between each node and the position where the collision occurs is different, the corresponding inclination and vibration intensity are different inevitably, the intensity of the vibration sensed by the node closest to the collision position is maximum inevitably, the intensity of the vibration sensed by other nodes is weakened in sequence according to the distance, and the geographical center position where the vibration collision occurs can be simply and accurately judged by calculation at the monitoring center according to the serial number of each node, and then related personnel are informed to go to the site of the corresponding position to deal with the position, the reason of the collision is tracked, and the normal state and the order are recovered.
Interface J2 is a debugging interface for debugging the circuit through the computer, interface J3 is a burning interface for transmitting the microprocessor running program to microprocessor U1 through the computer, LED LD1 is used for displaying that the circuit is in working condition, and when microprocessor U1 works, LED LD1 is on.
Claims (2)
1. A vibration sensing alarm for an urban traffic guardrail comprises an antenna (1-1), an antenna fixing base (1-2), a box body upper cover (1-3), a box body (1-4), a battery pack (1-5), a main board (1-6) and a vibration sensor II, wherein the vibration sensor II is composed of an MEMS six-axis sensor J5;
the method is characterized in that: the device also comprises a vibration sensor I (1-7) and a control circuit;
the vibration sensor I (1-7) is composed of a spring heavy hammer (1-7-1), a vibration limiting ring (1-7-2) and a spring heavy hammer fixing small plate (1-7-3);
the antenna (1-1) is fixed on a box body upper cover (1-3) through an antenna fixing base (1-2), the box body upper cover (1-3) is fixed on a box body (1-4), and a battery pack (1-5), a vibration limiting ring (1-7-2), a spring heavy hammer fixing small plate (1-7-3), an MEMS six-axis sensor J5 and a control circuit are respectively fixed on a main board (1-6) in the box body (1-4);
the vibration limiting ring (1-7-2) and the spring heavy hammer fixing small plate (1-7-3) are arranged at intervals,
the spring end of the spring heavy hammer (1-7-1) is connected with the spring heavy hammer fixing small plate (1-7-3), and the heavy hammer end of the spring heavy hammer (1-7-1) is arranged in the vibration limiting ring (1-7-2);
the control circuit comprises a microprocessor U1, a battery power supply circuit, a spring weight wiring terminal J1, an interface J2, an interface J3, a wireless communication module J4, an MEMS six-axis sensor J5, a communication address encoder J6, a vibration limiting ring wiring terminal J7 and an indicator light circuit;
the control circuit is specifically connected as follows: the pin 1, the pin 9, the pin 24, the pin 36 and the pin 48 of the microprocessor U1 are respectively connected with one end of a capacitor C4, a capacitor C5, a capacitor C46 and a capacitor C7 and are connected with a +3V power supply of a battery power supply circuit, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the pin 5 of the microprocessor U1 is connected with one end of a resistor R3, a quartz crystal Y1 and a capacitor C2, the other end of the capacitor C2 is connected with one end of the capacitor C2 and ground, the other end of the capacitor C2 is connected with the resistor R2, the other end of the capacitor C2 is connected with the ground, the pin 20 of the microprocessor U2 is grounded through the resistor R2, the pin 7 of the microprocessor U2 is connected with one end of the capacitor C2 and the resistor R2, the other end of the resistor R2 is connected with the +3V power supply, and the pin 20 of the microprocessor U2 is grounded through the pin 44, the pin 23, the pin 35 and the pin;
one end of a resistor R6 of the indicating lamp circuit is connected with a +3V power supply, and the other end of a resistor R6 is connected with a pin 2 of a microprocessor U1 through a light-emitting diode LD 1;
pins 1 to 10 of the communication address encoder J6 are grounded, and pins 11 to 20 of the communication address encoder J6 are connected with pins 45, 39, 38, 33, 32, 29, 28, 27, 26 and 25 of the microprocessor U1 in sequence;
the pin 1 of the wireless communication module J4 is grounded, the pin 12 is connected with a +3V power supply, and the pins 2 to 11 are sequentially connected corresponding to the pins 21, 22, 19, 14, 17, 16, 15, 18, 13 and 12 of the microprocessor U1;
the pin 5 of the MEMS six-axis sensor J5 is grounded, the pin 6 is connected with a +3V power supply, and the pin 1, the pin 2, the pin 3 and the pin 4 are sequentially connected corresponding to the pin 40, the pin 41, the pin 42 and the pin 43 of the microprocessor U1;
the 1 pin of the interface J2 is grounded, the 4 pin is connected with a +3V power supply, the 2 pin is connected with the 31 pin of the microprocessor U1, and the 3 pin is connected with the 30 pin of the microprocessor U1;
the 5 pin of the interface J3 is grounded, the 1 pin is connected with a +3V power supply, the 2 pin is connected with the 34 pin of the microprocessor U1, the 3 pin is connected with the 7 pin of the microprocessor U1, and the 4 pin is connected with the 37 pin of the microprocessor U1;
the spring weight (1-7-1) is connected with the 46 feet of the microprocessor U1 through the 1 feet to the 16 feet of the spring weight connecting terminal J1, and the vibration limiting ring (1-7-2) is grounded through the 1 feet to the 8 feet of the vibration limiting ring connecting terminal J7.
2. The implementation method of the urban traffic guardrail vibration sensing alarm is characterized by comprising the following steps:
the method comprises the following steps that a plurality of vibration sensing alarms (1) are respectively fixed on connecting columns of traffic guardrails (2), the vibration sensing alarms (1) are respectively communicated with an alarm processing end through respective wireless communication modules J4, and the alarm processing end is connected with a monitoring command center by utilizing the existing urban traffic signal network to form an alarm system;
1) the acquisition of the vibration signal is carried out,
when the traffic guardrail vibrates due to the impact of an object, a spring heavy hammer (1-7-1) of the vibration sensor I (1-7) inevitably swings due to inertia, when the swing amplitude reaches a certain degree, the spring heavy hammer is IN contact with a vibration limiting ring (1-7-2), the vibration limiting ring (1-7-2) is grounded IN a circuit, the spring heavy hammer (1-7-1) is connected with a 46-pin input end IN01 of a microprocessor U1, after the spring heavy hammer (1-7-1) is IN contact with the vibration limiting ring (1-7-2), the IN01 end of the microprocessor U1 is grounded, and the microprocessor U1 obtains the vibration signal, the microprocessor U1 is awakened immediately, at the moment, the microprocessor U1 quickly orders the vibration sensor II, namely the MEMS six-axis sensor J5 to enter a working state, a three-axis gyroscope and a three-axis acceleration sensor are integrated in the MEMS six-axis sensor J5, the angular velocity of inclination and the acceleration of displacement can be measured in X, Y, Z three dimensions, the data of the angular velocity and the acceleration are filtered and calculated through an internal processor, the data of the angular velocity and the acceleration are transmitted to the microprocessor U1, the inclination degree and the moving intensity of the guardrail can be known through the data by the microprocessor U1, and if the data are judged by the microprocessor U1 to exceed a preset vibration alarm value, namely when the moving distance of the guardrail exceeds 0.5 meter or the inclination exceeds 30 degrees, the microprocessor U1 sends a vibration alarm signal to an alarm processing end through the wireless communication module J4;
because the vibration sensing alarm (1) is powered by a battery and needs to reduce power consumption, the microprocessor U1 is in a sleep state when a vibration signal is not received;
when the guardrail is slightly vibrated by a vehicle passing through a road surface, the spring heavy hammer (1-7-1) does not swing greatly and can not be contacted with the vibration limiting ring (1-7-2), so that the microprocessor U1 is in a low-power-consumption sleep state for a long time, and the battery can work for a long time;
2) according to the communication mechanism of the vibration sensing alarms, alarm signals sent by a plurality of vibration sensing alarms (1) are all transmitted to nearby alarm processing ends, one alarm processing end is communicated with a plurality of vibration sensing alarms (1) at the same time, and a circuit board of each vibration sensing alarm (1) is provided with a communication address encoder J6, so that each vibration sensing alarm (1) can be given different numbers, namely different addresses, and the addresses represent the specific positions of the traffic guardrails where the vibration sensing alarms (1) are located;
the communication between vibrations sensing alarm (1) and the warning processing end adopts timing communication mode to go on one by one, under normal operating conditions, 0 point begins to communicate once every 6 hours every day, send the heartbeat data package by vibrations sensing alarm (1), adjacent vibrations sensing alarm (1) convey in proper order, the time interval is 10 seconds, the warning processing end sends the response data package after receiving, vibrations sensing alarm (1) receives the response data package after, send and confirm the data package, a node communication finishes, every vibrations sensing alarm (1) is after communication, microprocessor U1 gets into the sleep state promptly, the purpose of timing communication is: whether each vibration sensing alarm is in a normal state or not is regularly confirmed, and when the alarm is damaged or a battery is not charged, the vibration sensing alarm can be timely found out;
when the vibration alarm caused by the collision reason is transmitted to the alarm processing end, the alarm processing end transmits corresponding data to the monitoring center for disposal through the existing traffic signal special network;
3) a method for judging the position of a vibration center,
the length of the existing urban traffic guardrail is generally 3 meters, the investment cost is comprehensively considered, the arrangement interval of the vibration sensing alarm devices (1) is preferably 9 meters, each vibration sensing alarm device (1) is called as a vibration node, the guardrail is inevitably moved and inclined when a collision traffic accident occurs, and corresponding signals are sent to an alarm processing end from a plurality of vibration nodes and then are transmitted to a monitoring center through a traffic network;
because the distance between each node and the position where the collision occurs is different, the corresponding inclination and vibration intensity are different inevitably, the intensity of the vibration sensed by the node closest to the collision position is maximum inevitably, the intensity of the vibration sensed by other nodes is weakened in sequence according to the distance, and the geographical center position where the vibration collision occurs can be simply and accurately judged by calculation at the monitoring center according to the serial number of each node, and then related personnel are informed to go to the site of the corresponding position to deal with the position, the reason of the collision is tracked, and the normal state and the order are recovered.
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