CN111223278B - 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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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract
The invention relates to a vibration sensing alarm for urban traffic guardrails and an implementation method thereof, wherein a plurality of vibration sensing alarms are respectively fixed on connecting posts of the traffic guardrails, when the traffic guardrails are impacted by objects to generate vibration, after a spring weight contacts with a vibration limit ring, a microprocessor U1 rapidly commands a vibration MEMS six-axis sensor J5 to enter a working state, the MEMS six-axis sensor J5 is internally integrated with a three-axis gyroscope and a three-axis acceleration sensor, 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 the microprocessor U1, and if the data exceeds a preset vibration alarm value, the microprocessor U1 sends a vibration alarm signal to an alarm processing end through a wireless communication module J4, thereby accurately judging the position of a traffic accident causing the vibration and rapidly informing related personnel to carry out treatment.
Description
Technical Field
The invention provides an urban traffic guardrail vibration sensing alarm with a dual vibration sensor and a low-power consumption wireless sensing technology and an implementation method thereof, which are used for monitoring whether urban traffic guardrails are collided and damaged.
Background
Urban traffic guardrail is a traffic safety facility arranged at the outer side of road shoulder, traffic separation belt, pedestrian road teeth and other positions. The traffic guardrail is installed on the urban road, and the safety of driving and pedestrians is improved by longitudinally separating the road. The guardrail is divided into two types: the middle isolation guardrail and the roadside guardrail of the opposite lane.
Action against the lane middle isolation barrier: firstly, the front collision of the opposite vehicles can be prevented; secondly, the pedestrians can be prevented from crossing the road at will, and traffic accidents are avoided.
Function of roadside guardrail: firstly, the sight line induction can be carried out on a driver, so that the driver can be helped to operate correctly, and the vehicle can be prevented from being overturned out of the road when rushing out of the road; secondly, people and vehicles are isolated, and pedestrians are protected from being injured by vehicles.
The impact of a vehicle on a traffic barrier can damage both the vehicle, the passengers and the barrier itself.
The traffic guardrail absorbs collision energy through self-deformation or vehicle climbing, so that the running 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 greatest 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, which affects the normal use of the guardrail. The deformed and moving guard rail generally occupies part of motor lanes or non-motor lanes, and the passing vehicles have to slow down and pass through, so that traffic is influenced, even traffic accidents are caused, and the traffic hazards become. Therefore, the monitoring and maintenance of the traffic guardrail are very necessary in time, and the maintenance of the traffic guardrail in a normal state is a very necessary work.
The existing traffic guardrail vibration sensing alarm system has the following common aspects: 1) The vibration sensing alarm is arranged on the back of the guardrail. 2) As the expressway is generally longer, the distances between adjacent monitoring nodes are longer, and the transmission mode of the alarm signal adopts the transmission mode of the 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 which occur when the guardrail is collided. 4) Because the distance between each vibration sensing alarm is relatively far, the power supply mode adopts two modes of solar batteries or lithium batteries.
From the characteristics, the existing traffic guardrail vibration sensing alarm and system have the following defects:
1) Vibration is sensed by all vibration sensor components sold in the market, and the vibration sensor components are electrically driven and are arranged in related circuits to work, so that the vibration sensor components are always in a working state and have high power consumption. 2) Because the alarm is arranged in the field, the capacity of the power supply part is generally larger, so that the whole alarm is huge in size, and meanwhile, the investment and maintenance cost of the whole system is higher.
3) Because the distance between the alarm devices is far, when the position of the traffic accident is between the two alarm devices, enough vibration can not be caused to enable the alarm devices to sense and alarm, and the position for judging the traffic accident and the accident can not be reached.
Disclosure of Invention
In view of the state of the art and the defects existing in the prior art, the invention provides the vibration sensing alarm for the urban traffic guardrail and the implementation method, and the scheme comprising the two-stage vibration sensor is designed according to the characteristics of the traffic guardrail on the urban road, the first-stage sensor is a self-made mechanical contact sensor which is originally designed, the second-stage sensor is a MEMS six-axis sensor which is sold in the market, and the vibration and the intensity of the vibration of the guardrail and the position where the vibration occurs can be accurately sensed, so that the position of the traffic accident causing the vibration can be accurately judged, and the effective, real-time and accurate monitoring on the traffic guardrail is formed.
The technical scheme adopted by the invention for realizing the buying is as follows: the vibration sensing alarm comprises an antenna, an antenna fixing base, a box upper cover, a box, 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 consists of a spring weight, a vibration limit ring and a spring weight fixed 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 limit ring, a spring weight 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 limit ring and the spring weight fixed small plate are arranged at intervals,
The spring end of the spring weight is connected with the spring weight fixing small plate, and the weight end of the spring weight is arranged in the vibration limit 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 limit ring wiring terminal J7 and an indicator lamp circuit;
The control circuit is specifically connected with: the 1 foot, 9 foot, 24 foot, 36 foot, 48 foot of the microprocessor U1 are connected with one end of the capacitor C4, the capacitor C5, the capacitor C46, the capacitor C7 respectively, and are connected with a battery power supply circuit +3V power supply, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the 5 foot of the microprocessor U1 is connected with one end of the resistor R3, one end of the quartz crystal Y1 and one end of the capacitor C2, the other end of the capacitor C2 is connected with one end of the resistor R3 and the other end of the quartz crystal Y1 and the 6 foot of the microprocessor U1, the 7 foot of the microprocessor U1 is connected with one end of the capacitor C1 and one end of the resistor R2, the other end of the resistor R2 is connected with a +3V power supply, the 20 foot of the microprocessor U1 is grounded through the resistor R1, the 44 foot of the microprocessor U1 is grounded through the resistor R4, and the 23 foot, 35 foot, 47 foot and 8 foot of the microprocessor U1 are grounded;
one end of a resistor R6 of the indicator light circuit is connected with a +3V power supply, and the other end of the resistor R6 is connected with a pin 2 of the microprocessor U1 through a light emitting diode LD 1;
The 1 foot to 10 feet of the communication address encoder J6 are grounded, and the 11 feet to 20 feet of the communication address encoder J6 are sequentially connected corresponding to the 45 feet, 39 feet, 38 feet, 33 feet, 32 feet, 29 feet, 28 feet, 27 feet, 26 feet and 25 feet of the microprocessor U1;
The 1 foot of the wireless communication module J4 is grounded, the 12 foot is connected with a +3V power supply, and the 2 foot to the 11 foot correspond to the 21 foot, the 22 foot, the 19 foot, the 14 foot, the 17 foot, the 16 foot, the 15 foot, the 18 foot, the 13 foot and the 12 foot of the microprocessor U1 in sequence;
The 5 feet of the MEMS six-axis sensor J5 are grounded, the 6 feet are connected with a +3V power supply, and the 1 feet, the 2 feet, the 3 feet and the 4 feet are sequentially connected corresponding to the 40 feet, the 41 feet, the 42 feet and the 43 feet 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 feet of the interface J3 are grounded, the 1 feet are connected with a +3V power supply, the 2 feet are connected with the 34 feet of the microprocessor U1, the 3 feet are connected with the 7 feet of the microprocessor U1, and the 4 feet are connected with the 37 feet 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.
The method for realizing the vibration sensing alarm of the urban traffic guardrail is characterized by comprising the following steps of:
The method comprises the steps that a plurality of vibration sensing alarms are respectively fixed on connecting posts of a traffic guardrail, the vibration sensing alarms 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 an existing urban traffic signal network to form an alarm system;
1) The method comprises the steps that a vibration signal is obtained, a two-stage vibration sensor is arranged IN a vibration sensing alarm, the vibration sensor I and the vibration sensor II are arranged IN the vibration sensing alarm, when a traffic guardrail is impacted by an object to generate vibration, a spring weight of the vibration sensor I inevitably swings due to inertia, when the swing amplitude reaches a certain degree, the spring weight contacts with a vibration limiting ring IN a circuit, the vibration limiting ring is grounded, the spring weight is connected with a 46-foot input end IN01 of a microprocessor U1, after the spring weight contacts with the vibration limiting ring, the IN01 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 commands a MEMS six-axis sensor J5 of the vibration sensor II to enter a working state, the MEMS six-axis sensor J5 is internally integrated with a triaxial gyroscope and a triaxial acceleration sensor, the angular velocity of inclination and the acceleration of displacement can be measured IN X, Y, Z, data of the angular velocity and the acceleration are transmitted to the microprocessor U1 through filtering and calculation of an internal processor, the microprocessor U1 can be obtained, and if the inclination of the microprocessor U1 exceeds a preset inclination value of the microprocessor U1 or the microprocessor exceeds a wireless alarm value when the inclination value exceeds the preset value of the microprocessor 4, and the wireless alarm value exceeds the alarm value of the microprocessor is judged;
because the vibration sensing alarm is powered by a battery and needs to reduce power consumption, when no vibration signal is received, the microprocessor U1 is in a sleep state;
When the guardrail is subjected to slight vibration generated when a vehicle passes through a road surface, the spring heavy hammer swings little and cannot contact 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) The communication mechanism of the vibration sensing alarms, alarm signals sent by a plurality of vibration sensing alarms are transmitted to nearby alarm processing ends, one alarm processing end is simultaneously communicated with a plurality of vibration sensing alarms, and different numbers, namely different addresses, can be given to each vibration sensing alarm by arranging a communication address encoder J6 on a circuit board of each vibration sensing alarm, wherein the addresses represent the specific positions of traffic guardrails where the vibration sensing alarms are positioned;
The communication between the vibration sensing alarm and the alarm processing end is carried out one by one in a timing communication mode, under the normal working condition, every 6 hours is communicated from 0 point every day, the vibration sensing alarm sends out heartbeat data packets, adjacent vibration sensing alarms are sequentially transmitted, the time interval is 10 seconds, the alarm processing end sends out response data packets after receiving the response data packets, the vibration sensing alarm sends out acknowledgement data packets after receiving the response data packets, one node communication is finished, each vibration sensing alarm enters a sleep state after the communication is finished, and the purpose of timing communication is that: the method comprises the steps of regularly confirming whether each vibration sensing alarm is in a normal state or not, and finding out in time when the alarm is damaged or a battery is not powered;
When vibration alarm caused by collision is transmitted to an alarm processing end, the alarm processing end transmits corresponding data to a monitoring center for treatment through the existing traffic signal special network;
3) The method for judging the vibration center position generally comprises the steps of taking the length of the existing urban traffic guardrail into account generally to be 3 meters, comprehensively considering the input cost, and setting the vibration sensing alarms to be 9 meters, wherein each vibration sensing alarm is called as a vibration node, when a collision traffic accident occurs, the guardrail is inevitably caused to move and incline, and corresponding signals are sent to an alarm processing end from a plurality of vibration nodes and then are sent 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 the vibration intensity are necessarily different, the intensity of vibration perceived by the node closest to the collision position is necessarily the largest, the intensity of vibration perceived by other nodes according to the distance between the nodes is sequentially weakened, the geographic center position where the vibration collision occurs can be simply and accurately judged through calculation according to the serial number of each node in the monitoring center, then relevant personnel are notified to go to the site at the corresponding position for treatment, the reason of the collision is tracked, and the normal state and order are recovered.
The beneficial effects of the invention are as follows:
The invention designs a corresponding scheme comprising two-stage vibration sensors aiming at the characteristics of traffic guardrails on urban roads, and the primary sensor is a self-made mechanical contact sensor, and because the vibration condition rarely occurs, the circuit is started to work only when the spring weight contacts with the vibration limit ring, and the circuit is in a dormant state at ordinary times, so that the power consumption of the circuit is greatly reduced, the maintenance workload of the circuit is greatly reduced, and the circuit can be widely applied to cities. 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 the traffic accident causing the vibration, rapidly informing related personnel to carry out treatment and providing reliable guarantee for urban traffic safety; meanwhile, the waste of functions of a common vibration sensing alarm and a system is saved, and the urban management cost is saved, and the method is convenient for large-scale popularization and use.
The vibration sensing alarm has the advantages of simple structure, small volume and convenient installation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the inside of the case of the present invention;
FIG. 3 is a schematic diagram of the structure of the vibration sensor I of the present invention;
FIG. 4 is a control circuit diagram of the present invention;
FIG. 5 is a block diagram of the circuit connections that form the alarm system of the present invention;
fig. 6 is a use state diagram of the present invention.
Detailed Description
As shown in fig. 1 to 4, a vibration sensing alarm for urban traffic guardrails, wherein the vibration sensing alarm 1 comprises an antenna 1-1, an antenna fixing base 1-2, a box upper cover 1-3, a box 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 vibration sensor comprises vibration sensors I1-7 and a control circuit.
The vibration sensor I1-7 consists of a spring weight 1-7-1, a vibration limit ring 1-7-2 and a spring weight fixing small plate 1-7-3;
the antenna 1-1 is fixed on the box body upper cover 1-3 through an antenna fixing base 1-2 by using 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 limit ring 1-7-2, a spring weight 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 limit 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 limit 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 limit ring wiring terminal J7 and an indicator lamp circuit.
The control circuit is specifically connected with: the 1 foot, 9 foot, 24 foot, 36 foot, 48 foot of the microprocessor U1 are connected with one end of the capacitor C4, the capacitor C5, the capacitor C46, the capacitor C7 respectively, and are connected with a battery power supply circuit +3V power supply, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the 5 foot of the microprocessor U1 is connected with one end of the resistor R3, one end of the quartz crystal Y1 and one end of the capacitor C2, the other end of the capacitor C2 is connected with one end of the resistor R3 and the other end of the quartz crystal Y1 and the 6 foot of the microprocessor U1, the 7 foot of the microprocessor U1 is connected with one end of the capacitor C1 and one end of the resistor R2, the other end of the resistor R2 is connected with a +3V power supply, the 20 foot of the microprocessor U1 is grounded through the resistor R1, the 44 foot of the microprocessor U1 is grounded through the resistor R4, and the 23 foot, 35 foot, 47 foot and 8 foot of the microprocessor U1 are grounded;
one end of a resistor R6 of the indicator light circuit is connected with a +3V power supply, and the other end of the resistor R6 is connected with a pin 2 of the microprocessor U1 through a light emitting diode LD 1;
The 1 foot to 10 feet of the communication address encoder J6 are grounded, and the 11 feet to 20 feet of the communication address encoder J6 are sequentially connected corresponding to the 45 feet, 39 feet, 38 feet, 33 feet, 32 feet, 29 feet, 28 feet, 27 feet, 26 feet and 25 feet of the microprocessor U1;
The 1 foot of the wireless communication module J4 is grounded, the 12 foot is connected with a +3V power supply, and the 2 foot to the 11 foot correspond to the 21 foot, the 22 foot, the 19 foot, the 14 foot, the 17 foot, the 16 foot, the 15 foot, the 18 foot, the 13 foot and the 12 foot of the microprocessor U1 in sequence;
The 5 feet of the MEMS six-axis sensor J5 are grounded, the 6 feet are connected with a +3V power supply, and the 1 feet, the 2 feet, the 3 feet and the 4 feet are sequentially connected corresponding to the 40 feet, the 41 feet, the 42 feet and the 43 feet 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 feet of the interface J3 are grounded, the 1 feet are connected with a +3V power supply, the 2 feet are connected with the 34 feet of the microprocessor U1, the 3 feet are connected with the 7 feet of the microprocessor U1, and the 4 feet are connected with the 37 feet 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 wiring 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 wiring terminal J7.
As shown in fig. 5 and 6, the implementation method of the urban traffic guardrail vibration sensing alarm comprises the following steps:
The method comprises the steps that a plurality of vibration sensing alarms 1 are respectively fixed on the top ends in a plurality of connecting columns of a traffic guardrail 2, the plurality of 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 an existing urban traffic signal network to form an alarm system;
1) The acquisition of the vibration signal is performed,
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 is impacted by an object to generate vibration, a spring weight 1-7-1 of the vibration sensor I1-7 inevitably swings due to inertia, and when the swing amplitude reaches a certain degree, the spring weight 1-7-1 contacts with a vibration limit ring 1-7-2; the vibration limit ring 1-7-2 is grounded IN the circuit, the spring weight 1-7-1 is connected with the input end IN01 of the 46 feet of the microprocessor U1, the spring weight 1-7-1 is grounded with the IN01 end of the microprocessor U1 after being contacted with the vibration limit ring 1-7-2, the microprocessor U1 obtains the vibration signal, as the vibration sensing alarm 1 adopts a battery to supply power and needs to reduce power consumption as much as possible, when the vibration signal is not received, the microprocessor U1 is IN a sleep state, after the vibration signal is obtained, the microprocessor U1 is immediately awakened, at the moment, the microprocessor U1 rapidly commands the vibration sensor II, namely the MEMS six-axis sensor J5, a triaxial gyroscope and a triaxial acceleration sensor J5 are integrated inside, the angular velocity at which the inclination occurs and the acceleration at which the displacement occurs can be measured IN three dimensions of X, Y, Z, and the useful data of the angular velocity and the acceleration are transmitted to the microprocessor U1 through the internal processor for filtering and calculating, the microprocessor U1 can know the inclination degree and the violent movement degree of the guardrail through the data, and the microprocessor U1 can judge that the inclination degree and the movement degree of the guardrail exceed the preset value of the vibration sensor J1, namely the alarm module is more than the preset value of the alarm module is positioned at the position of the wireless alarm module J0 or the vibration sensor J1 is beyond the preset value of the alarm 1, and the alarm module is positioned at the position of the wireless alarm module is beyond the alarm point of the vibration sensor J0;
when the guardrail is subjected to slight vibration generated when a vehicle passes through a road surface, the spring heavy hammer 1-7-1 swings little and cannot contact with the vibration limit 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) A communication mechanism of the vibration sensing alarm,
The alarm signals sent by the vibration sensing alarms 1 are transmitted to nearby alarm processing ends, one alarm processing end can communicate with 510 vibration sensing alarms 1 at the same time, a communication address encoder J6 is arranged on a circuit board of each vibration sensing alarm 1, and different numbers, namely different addresses, of each vibration sensing alarm 1 can be given 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;
The communication between the vibration sensing alarm 1 and the alarm processing end is carried out one by one in a timing communication mode, under the normal working condition, every 6 hours is communicated from 0 points every day, the adjacent alarms which are sent out by the vibration sensing alarm 1 and have heartbeat data packets are sequentially transmitted, the time interval is 10 seconds, the alarm processing end sends out response data packets after receiving the response data packets, the vibration sensing alarm 1 sends out acknowledgement data packets after receiving the response data packets, the communication of the alarm is finished, each vibration sensing alarm 1 enters a sleep state after the communication is finished, and the purpose of timing communication is that: the vibration sensing alarm can be regularly confirmed whether each vibration sensing alarm is in a normal state or not, and the vibration sensing alarm can be timely found when the alarm is damaged or a battery is not powered;
When vibration alarm caused by collision is transmitted to an alarm processing end, the alarm processing end gathers corresponding data, and the data is transmitted to a 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 input cost is comprehensively considered, the setting interval of the vibration sensing alarms 1 is preferably 9 meters, each vibration sensing alarm 1 is called a vibration node, the guardrail is inevitably caused to move and incline 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 the vibration intensity are necessarily different, the intensity of vibration perceived by the node closest to the collision position is necessarily the largest, the intensity of vibration perceived by other nodes according to the distance between the nodes is sequentially weakened, the geographic center position where the vibration collision occurs can be simply and accurately judged through calculation according to the serial number of each node in the monitoring center, then relevant personnel are notified to go to the site at the corresponding position for treatment, the reason of the collision is tracked, and the normal state and order are recovered.
The interface J2 is a debugging interface for debugging a circuit through a computer, the interface J3 is a burning interface for transmitting a microprocessor running program to the microprocessor U1 through the computer, and the light emitting diode LD1 is used for displaying that the circuit is in a working state, and when the microprocessor U1 works, the light emitting diode LD1 is on.
Claims (1)
1. A realization method of an urban traffic guardrail vibration sensing alarm is characterized in that: 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), a vibration sensor II, a vibration sensor I (1-7) and a control circuit; the vibration sensor II is composed of an MEMS six-axis sensor J5;
The vibration sensor I (1-7) is composed of a spring weight (1-7-1), a vibration limit ring (1-7-2) and a spring weight 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), the box body upper cover (1-3) is fixed on the box body (1-4), and a battery pack (1-5), a vibration limit ring (1-7-2), a spring weight 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, an MEMS six-axis sensor J5, a communication address encoder J6, a vibration limit ring wiring terminal J7 and an indicator lamp circuit;
The control circuit is specifically connected with: the 1 foot, 9 foot, 24 foot, 36 foot, 48 foot of the microprocessor U1 are connected with one end of the capacitor C4, the capacitor C5, the capacitor C46, the capacitor C7 respectively, and are connected with a battery power supply circuit +3V power supply, the other ends of the capacitor C4, the capacitor C5, the capacitor C46 and the capacitor C7 are grounded, the 5 foot of the microprocessor U1 is connected with one end of the resistor R3, one end of the quartz crystal Y1 and one end of the capacitor C2, the other end of the capacitor C2 is connected with one end of the resistor R3 and the other end of the quartz crystal Y1 and the 6 foot of the microprocessor U1, the 7 foot of the microprocessor U1 is connected with one end of the capacitor C1 and one end of the resistor R2, the other end of the resistor R2 is connected with a +3V power supply, the 20 foot of the microprocessor U1 is grounded through the resistor R1, the 44 foot of the microprocessor U1 is grounded through the resistor R4, and the 23 foot, 35 foot, 47 foot and 8 foot of the microprocessor U1 are grounded;
one end of a resistor R6 of the indicator light circuit is connected with a +3V power supply, and the other end of the resistor R6 is connected with a pin 2 of the microprocessor U1 through a light emitting diode LD 1;
The 1 foot to 10 feet of the communication address encoder J6 are grounded, and the 11 feet to 20 feet of the communication address encoder J6 are sequentially connected corresponding to the 45 feet, 39 feet, 38 feet, 33 feet, 32 feet, 29 feet, 28 feet, 27 feet, 26 feet and 25 feet of the microprocessor U1;
The 1 foot of the wireless communication module J4 is grounded, the 12 foot is connected with a +3V power supply, and the 2 foot to the 11 foot correspond to the 21 foot, the 22 foot, the 19 foot, the 14 foot, the 17 foot, the 16 foot, the 15 foot, the 18 foot, the 13 foot and the 12 foot of the microprocessor U1 in sequence;
The 5 feet of the MEMS six-axis sensor J5 are grounded, the 6 feet are connected with a +3V power supply, and the 1 feet, the 2 feet, the 3 feet and the 4 feet are sequentially connected corresponding to the 40 feet, the 41 feet, the 42 feet and the 43 feet 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 feet of the interface J3 are grounded, the 1 feet are connected with a +3V power supply, the 2 feet are connected with the 34 feet of the microprocessor U1, the 3 feet are connected with the 7 feet of the microprocessor U1, and the 4 feet are connected with the 37 feet of the microprocessor U1;
the spring weight (1-7-1) is connected with the pin 46 of the microprocessor U1 through the pin 1 to the pin 16 of the spring weight wiring terminal J1, and the vibration limiting ring (1-7-2) is grounded through the pin 1 to the pin 8 of the vibration limiting ring wiring terminal J7;
the implementation method comprises the following steps:
A plurality of vibration sensing alarms (1) are respectively fixed on connecting posts of a traffic guardrail (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 vibration signals, a two-stage vibration sensor, a vibration sensor I (1-7) and a vibration sensor II are arranged IN the vibration sensing alarm (1), when a traffic guardrail is impacted by an object to generate vibration, a spring weight (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 weight contacts with a vibration limit ring (1-7-2), the vibration limit ring (1-7-2) is grounded IN a circuit, the spring weight (1-7-1) is connected with a 46-foot input end IN01 of a microprocessor U1, after the spring weight (1-7-1) contacts with the vibration limit ring (1-7-2), the IN01 end of the microprocessor U1 is grounded, and the microprocessor U1 acquires the vibration signals, the microprocessor U1 is immediately awakened, at this time, the microprocessor U1 rapidly commands the vibration sensor II, namely the MEMS six-axis sensor J5 to enter a working state, the MEMS six-axis sensor J5 is internally integrated with a three-axis gyroscope and a three-axis acceleration sensor, the angular velocity with inclination and the acceleration with displacement can be measured IN X, Y, Z three dimensions, the data of the angular velocity and the acceleration are transmitted to the microprocessor U1 through the filtering and the calculation of an internal processor, the microprocessor U1 can know the inclination degree and the movement severity of the guardrail through the data, if the microprocessor U1 judges that the data exceeds a preset vibration alarm value, namely when the movement 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, when no vibration signal is received, the microprocessor U1 is in a sleep state;
when the guardrail is subjected to slight vibration generated when a vehicle passes through a road surface, the spring heavy hammer (1-7-1) swings little and cannot contact with the vibration limit 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 vibration sensing alarms is characterized in that alarm signals sent by a plurality of vibration sensing alarms (1) are transmitted to nearby alarm processing ends, one alarm processing end simultaneously communicates with a plurality of vibration sensing alarms (1), and different numbers, namely different addresses, of each vibration sensing alarm (1) can be given to the circuit board of each vibration sensing alarm (1) through the arrangement of a communication address encoder J6, wherein the addresses represent the specific positions of traffic guardrails where the vibration sensing alarms (1) are located;
The communication between the vibration sensing alarm (1) and the alarm processing end is carried out one by one in a timing communication mode, under the normal working condition, every 6 hours is communicated from 0 point every day, the vibration sensing alarm (1) sends out heartbeat data packets, the adjacent vibration sensing alarm (1) is sequentially transmitted, the time interval is 10 seconds, the alarm processing end sends out response data packets after receiving the response data packets, the vibration sensing alarm (1) sends out confirmation data packets after receiving the response data packets, one node communication is finished, each vibration sensing alarm (1) enters a sleep state after the communication is finished, and the purpose of timing communication is that: the method comprises the steps of regularly confirming whether each vibration sensing alarm is in a normal state or not, and finding out in time when the alarm is damaged or a battery is not powered;
When vibration alarm caused by collision is transmitted to an alarm processing end, the alarm processing end transmits corresponding data to a monitoring center for treatment through the existing traffic signal special network;
3) The method for judging the vibration center position generally comprises the steps of taking the length of the existing urban traffic guardrail into account generally to be 3 meters, comprehensively considering the input cost, and preferably taking the setting interval of the vibration sensing alarms (1) as 9 meters, wherein each vibration sensing alarm (1) is called as a vibration node, when a collision traffic accident occurs, the guardrail is inevitably caused to move and incline, and corresponding signals are sent to an alarm processing end from a plurality of vibration nodes and then are sent 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 the vibration intensity are necessarily different, the intensity of vibration perceived by the node closest to the collision position is necessarily the largest, the intensity of vibration perceived by other nodes according to the distance between the nodes is sequentially weakened, the geographic center position where the vibration collision occurs can be simply and accurately judged through calculation according to the serial number of each node in the monitoring center, then relevant personnel are notified to go to the site at the corresponding position for treatment, the reason of the collision is tracked, and the normal state and order are recovered.
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