CN102074094B - Security early-warning prompting system for bridges - Google Patents

Abstract

The invention relates to the technical field of road traffic bridge safety detection and early warning, in particular to a bridge safety early warning and prompt system. It includes a power supply module, which is characterized in that it also includes an alarm circuit module and a voice and sound and light alarm device. The power supply module is composed of a battery module and a solar power generation device. The negative input terminal is connected, the output terminal of the battery module is connected with the DC/DC voltage conversion module, the output terminal of the DC/DC voltage conversion module is respectively connected with the induction line open circuit comparison circuit and the alarm circuit module, and the alarm circuit module is connected with the voice, sound and light The alarm device is connected. It adopts an induction line open circuit comparison circuit, which can well realize the early warning and prompt function of the bridge collapse accident, and realizes the sound and light alarm prompt function when the bridge collapses. The system is simple in structure, stable and reliable, and easy to expand.

Description

Bridge Safety Early Warning System

Technical field:

The invention relates to the technical field of road traffic bridge safety detection and early warning, in particular to a bridge safety early warning and prompt system.

Background technique:

In recent years, with the development of road traffic in our country, especially the rapid development of railway traffic, bridge engineering technology has also developed by leaps and bounds. With the further improvement of my country's major transportation networks, the traffic problems in remote areas and areas with complex geographical environments have been gradually overcome, and the construction of bridges has played an important role in it. The development of bridge engineering technology has made the structure of bridges more concise and beautiful, the span of bridges has been increasing, and the number of bridges with extra long spans has increased year by year. As an important part of national infrastructure, bridges play an increasingly important role in national economy and social life. At the same time, people are very concerned about the safety, durability and normal use function of large bridges. Bridge detection technology is an important part of the bridge engineering field, and the transmission of existing bridge detection data is completed by wired cables. Although this technical method has the advantages of low technical content, high data transmission efficiency, and good accuracy, in the test of long-span bridge structures, with the increase of bridge span and the increase of the number of sensors, the amount of wired cables increases sharply, and thousands of Meters of wired cabling is too much work to implement. For bridges with long spans. There are a lot of inconveniences in bridge detection in the existing long-distance wired cable connection mode. For example, the on-site test cycle is long, the efficiency is low, and the flexibility is poor; the workload of arranging and evacuating wired cables is heavy; if there are many test points, the distribution of wired cables is complicated and messy, and it is easy to make mistakes, which will bring irreparable difficulties for later data processing; These conditions restrict the development of bridge engineering technology.

Invention patent 200510009658.x invention patent discloses a sensor-based bridge wireless monitoring system, which measures the dynamic data and static data of the bridge structure in a wireless manner, which has the advantages of high detection accuracy, short test cycle, high efficiency and low workload. Small size, no need to rely on the existing communication network, high reliability and other advantages. However, the detection of the bridge use process in the existing technology stays at static data collection analysis and dynamic evaluation, and its technical implementation is limited by geographical location, especially for bridge collapse accidents caused by sudden natural disasters in mountainous areas, effective monitoring and early warning cannot be implemented , In this way, the bridges in remote areas cannot be warned in time when the bridges in remote areas collapse suddenly, which will easily lead to the loss of people and property caused by the weather.

Invention content:

The present invention is a bridge safety early warning prompting system provided for the deficiencies of the existing technology. It adopts the structural design of the circuit and can send an alarm to bridge collapse accidents caused by natural disasters such as earthquakes and debris flows, thereby effectively solving the problem of bridge collapse. problems in the prior art.

The solution adopted by the present invention to solve its technical problems is: the bridge safety early warning prompt system includes a power module, which is characterized in that it also includes an alarm circuit module and a voice and sound and light alarm device, and the power module is powered by a storage battery. Module and solar power generation device, the positive and negative output terminals of the solar power generation device are connected to the positive and negative input terminals of the battery module, the output terminal of the battery module is connected to the DC/DC voltage conversion module, and the output terminal of the DC/DC voltage conversion module They are respectively connected with the induction line open circuit comparison circuit and the alarm circuit module, and the alarm circuit module is connected with the voice and sound and light alarm devices.

The induction wire break comparison circuit includes a sense wire and a break comparator. Resistor R1 is connected to the positive output terminal of the DC/DC voltage conversion module; the other end of the sensing wire is connected to the positive input terminal of the open circuit comparator through the resistor R4, and the positive input terminal of the open circuit comparator is connected to the DC/DC voltage conversion module through the resistor R3 The connection between the sensing wire and resistor R4 is connected to the GND pin of the open-circuit comparator and the negative output terminal of the DC/DC voltage conversion module, and the output pin and power supply pin of the open-circuit comparator are connected to the photocoupler The CTHHODE input terminal is connected, the resistor R10 is installed between the output pin of the circuit breaker comparator and the power supply pin, the ANODE input terminal of the optocoupler is connected to the positive output terminal of the DC/DC voltage conversion module through the resistor R5, and the optocoupler The COLLECTOR output terminal is connected with the positive output terminal of the DC/DC voltage conversion module.

The alarm circuit module includes a triode and a relay, the base of the triode is connected to the EMITTER output terminal of the photocoupler through a resistor R6, the emitter of the triode Q1 is connected to the negative output terminal of the DC/DC voltage conversion module, and the emitter of the triode Q1 There is a resistor R7 between the electrode and the base, the collector of the transistor Q1 is connected to the positive output terminal of the DC/DC voltage conversion module through a diode, the collector of the transistor Q1 is connected to one end of the relay coil, and the other end of the relay coil is connected to the DC/DC The positive output terminal of the voltage conversion module is connected, one pin of the output terminal of the relay is connected to the positive output terminal of the battery module, and the other pin of the output terminal of the relay is connected to the alarm bell and alarm light of the voice and sound and light alarm device, the alarm bell and the alarm A resistor is arranged between the lamps, the collector of the triode is connected to the positive pole of the diode, and the negative pole of the diode is connected to the positive output terminal of the DC/DC voltage conversion module. The alarm bell and alarm of the voice and sound and light alarm device There are two lights, a resistor R8 is set between the first alarm bell and the first alarm light, a resistor R9 is set between the second alarm bell and the second alarm light, and the alarm light is a light-emitting diode.

The induction line disconnection comparison circuit is replaced by MCS51 single-chip microcomputer, the positive output terminal of the DC/DC voltage conversion module is connected with the VCC pin of the single-chip microcomputer, the negative output terminal of the DC/DC voltage conversion module is connected with the GND pin of the single-chip microcomputer module, and the induction wire One end of the sensor wire is connected to the positive output end of the DC/DC voltage conversion module, the other end of the sensing wire is connected to the interrupt INT0 pin of the microcontroller, and the base of the triode C1 of the alarm circuit module is connected to the P1.0 pin of the microcontroller through a resistor R11. The base of the triode C2 is connected to the P1.1 pin of the microcontroller through the resistor R12, the collectors of the triode C1 and the triode C2 are connected to the positive output terminal of the battery module, the emitter of the triode C1 is connected to the alarm light, and the emitter of the triode C2 Connected to the alarm bell.

The output voltage of the DC/DC voltage conversion module is 5V or 6V, and the output voltage of the battery module is 12V.

Through the above technical scheme, the present invention has the following effects: the bridge safety early warning and prompting system adopts an induction line open circuit comparison circuit, which can well realize the early warning and prompting function of bridge collapse accidents, and realizes bridge collapse. Sound and light alarm function. The system is simple in structure, stable and reliable, and easy to expand.

Description of drawings:

Fig. 1 is a structural principle and a schematic diagram of circuit connection of Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the structure principle and circuit connection of Embodiment 2 of the present invention.

As shown in the figure: 1. Induction wire; 2. Open circuit comparator; 3. Photocoupler, 4. Transistor Q1; 5. Diode; 6. Relay; 7. Alarm bell; 8. Alarm light; 9. Solar power generation device 10. Battery module; 11. DC/DC voltage conversion module; 12. MCS51 microcontroller; 13. Transistor C1; 14. Transistor C2.

Detailed ways

Below in conjunction with the preferred embodiment shown in the accompanying drawings, it will be further described in detail

Embodiment 1, as shown in Figure 1, the described bridge safety early warning system includes a power supply module, which is characterized in that it also includes an alarm circuit module and a voice and sound and light alarm device, and the described power supply module is composed of a storage battery module 10 and a solar power generation device 9, the positive and negative output terminals of the solar power generation device 9 are connected to the positive and negative input terminals of the battery module 10, the output terminal of the battery module 10 is connected to the DC/DC voltage conversion module 11, and the DC/DC voltage conversion The output end of the module 11 is respectively connected with the induction line disconnection comparison circuit and the alarm circuit module, and the alarm circuit module is connected with the voice and sound and light alarm device.

The induction line break comparison circuit includes a sense lead 1 and a break comparator 2, the break comparator 2 model is LM139WA, one end of the sense lead 1 is connected to the negative input terminal of the break comparator 2 through a variable resistor R2, and the break comparator The negative input terminal of 2 is connected to the positive output terminal of the DC/DC voltage conversion module 11 through the resistor R1; Connect to the positive output terminal of the DC/DC voltage conversion module 11 through the resistor R3; the connection between the sensing wire 1 and the resistor R4 is connected to the GND pin of the open circuit comparator 2 and the negative output terminal of the DC/DC voltage conversion module 11, and the circuit is disconnected. The output pin and power supply pin of comparator 2 are connected with the CTHHODE input terminal of optocoupler 3, the resistor R10 is installed between the output pin and power supply pin of comparator 2, and the ANODE input terminal of optocoupler 3 passes through The resistor R5 is connected to the positive output terminal of the DC/DC voltage conversion module 11 , and the COLLECTOR output terminal of the photocoupler 3 is connected to the positive output terminal of the DC/DC voltage conversion module 11 .

Described alarm circuit module comprises triode Q14 and relay 6, and the base of triode Q14 is connected with the EMITTER output terminal of optocoupler 3 through resistance R6, and the emitter of triode Q14 is connected with the negative electrode of DC/DC voltage conversion module 11. The output terminals are connected, a resistor R7 is provided between the emitter and the base of the transistor Q14, the collector of the transistor Q14 is connected to the positive output terminal of the DC/DC voltage conversion module 11 through a diode, and the collector of the transistor Q14 is connected to the relay One end of the coil 6 is connected, the other end of the coil of the relay 6 is connected to the positive output end of the DC/DC voltage conversion module 11, one pin of the output end of the relay 6 is connected to the positive output end of the battery module 10, and the other pin of the output end of the relay 6 Connect the alarm bell 7 and the alarm lamp 8 of voice and sound and light alarm device, be provided with resistance between the alarm bell 7 and the alarm lamp 8, the collector of described triode Q14 is connected with the positive pole of diode 5, the negative pole of diode 5 is connected with the positive pole of diode 5. The positive output terminal of the DC/DC voltage conversion module 11 is connected, and the alarm bell 7 and the alarm lamp 8 of the voice and sound and light alarm device are two, and a resistor R8 is arranged between the first alarm bell and the first alarm lamp , A resistor R9 is set between the second alarm bell and the second alarm lamp, and the alarm lamp 8 is a light emitting diode. The output voltage of the DC/DC voltage conversion module 11 is 6V, and the output voltage of the battery module 10 is 12V.

During implementation, each device is connected, and the variable resistor R2 is adjusted so that the voltage of the negative input terminal of the comparator 2 is lower than the voltage of the positive input terminal of the comparator. At this time, the output terminal of the comparator 2 outputs a high level, and the photocoupler 3 does not Through, the triode Q14 is not conducting, and the alarm bell 7 and the alarm lamp 8 do not work. When the bridge collapses, the induction wire 1 is disconnected, and the voltage of the negative input terminal of the circuit breaker comparator 2 is greater than the voltage of the positive input terminal. At this time, the output terminal of the circuit breaker comparator 2 outputs a low level, the photocoupler 3 is turned on, and the transistor Q1 4 Conduction, the alarm bell 7 and the alarm lamp 8 are all connected to work, warning pedestrians and vehicles that the bridge collapses.

Embodiment 2, as shown in Figure 2, differs from Embodiment 1 in that the induction line disconnection comparison circuit is replaced by an MCS51 single-chip microcomputer 12, and the positive output terminal of the DC/DC voltage conversion module 11 is connected to the VCC pin of the single-chip microcomputer 12 The negative output terminal of the DC/DC voltage conversion module 11 is connected to the GND pin of the single-chip microcomputer module 12, one end of the sensing wire 1 is connected to the positive output terminal of the DC/DC voltage conversion module 11, and the other end of the sensing wire 1 is connected to the single-chip microcomputer 12. The interrupt INT0 pin is connected, the base of the triode C113 of the alarm circuit module is connected with the P1.0 pin of the single-chip microcomputer 12 through the resistor R11, and the base of the triode C214 is connected with the P1.1 pin of the single-chip microcomputer 12 through the resistor R12, The collector of triode C113 and triode C214 is connected with the positive output terminal of battery module 10, the emitter of triode C113 is connected with warning light 8, and the emitter of triode C214 is connected with alarm bell 7. The output voltage of the DC/DC voltage conversion module 11 is 5V, and the output voltage of the battery module 10 is 12V.

During implementation, connect sensing wire 1, MCS51 single-chip microcomputer 12, battery module 10 and other devices, write a program, set INT0 of MCS51 single-chip microcomputer 12 to work in edge trigger mode, download the program to MCS51 single-chip microcomputer 12, and sense wire 1 when the bridge does not collapse. Keep connected, the interrupt INT0 pin level of MCS51 MCU 12 does not jump, at this time, the P1.0 and P1.1 pins of MCS51 MCU output low level, and the triode C1 13 and triode C2 14 are not conducting , the alarm bell 7 and the alarm lamp 8 do not work. When the bridge collapses, the induction wire 1 is disconnected, and the interrupt INT0 pin of the MCS51 single-chip microcomputer 12 jumps from high level to low level. At this time, the MCS51 single-chip microcomputer 12 starts to work under the control of the software. 0. The P1.1 pin outputs a high level, the triode C1 13 and the triode C2 14 are turned on, the alarm bell 7 and the alarm light 8 start to work, which play a warning role.

Claims (4)

1. bridge safety warning system, include power module, warning circuit module and voice and acoustic-optic alarm, it is characterized in that: described power module is comprised of battery module and device of solar generating, the both positive and negative polarity output terminal of device of solar generating links to each other with the both positive and negative polarity input end of battery module, the output terminal of battery module links to each other with the DC/DC voltage transformation module, the output terminal of DC/DC voltage transformation module links to each other with the warning circuit module with the line of induction comparator circuit that opens circuit respectively, and the warning circuit module links to each other with voice and acoustic-optic alarm; The described line of induction opens circuit, and comparator circuit comprises sensor wire and the comparer that opens circuit, the comparer model that opens circuit is LM139WA, one end of sensor wire is connected with the negative input end of the comparer that opens circuit by variable resistor R2, and the negative input end of the comparer that opens circuit links to each other with the positive output end of DC/DC voltage transformation module by resistance R 1; The other end of sensor wire is connected by the positive input terminal of resistance R 4 with the comparer that opens circuit, and the positive input terminal of the comparer that opens circuit links to each other with the positive output end of DC/DC voltage transformation module by resistance R 3; The junction of sensor wire and resistance R 4 links to each other with the negative output terminal of the GND pin of the comparer that opens circuit and DC/DC voltage transformation module, the output pin of comparer of opening circuit links to each other with the CHTHODE input end of photoelectrical coupler with power pins, resistance R 10 is installed between the output pin and power pins of the comparer that opens circuit, the ANODE input end of photoelectrical coupler links to each other with the positive output end of DC/DC voltage transformation module by resistance R 5, and the COLLECTOR output terminal of photoelectrical coupler links to each other with the positive output end of DC/DC voltage transformation module; The warning circuit module comprises triode Q1 and relay, the base stage of triode Q1 links to each other with the EMITTER output terminal of photoelectrical coupler by resistance R 6, the emitter of triode Q1 links to each other with the negative output terminal of DC/DC voltage transformation module, be provided with resistance R 7 between the emitter of triode Q1 and the base stage, the collector of triode Q1 links to each other by the positive output end of diode with the DC/DC voltage transformation module, the collector of triode Q1 links to each other with relay coil one end, the relay coil other end links to each other with the positive output end of DC/DC voltage transformation module, output terminal one pin of relay connects the positive output end of battery module, another pin of the output terminal of relay connects emergency alarm bell and the alarm lamp of voice and acoustic-optic alarm, is provided with resistance between emergency alarm bell and the alarm lamp.

2. bridge safety warning system according to claim 1, it is characterized in that: the collector of described triode links to each other with the positive pole of diode, and the negative pole of diode links to each other with the positive output end of DC/DC voltage transformation module.

3. bridge safety warning system according to claim 1, it is characterized in that: the emergency alarm bell of described voice and acoustic-optic alarm and alarm lamp are two, be provided with resistance R 8 between first Report alarm bell and the first Report warning lamp, be provided with resistance R 9 between Secondary Report alarm bell and the Secondary Report warning lamp.

4. according to claim 1 or 3 described bridge safety warning systems, it is characterized in that: described alarm lamp is light emitting diode.

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