Telescopic monitoring device for bridge steel rail

Abstract

The utility model relates to a telescopic monitoring device for a bridge steel rail, which belongs to the technical field of safety monitoring and comprises a main control circuit, a bridge monitoring camera, a steel rail monitoring camera, a camera control circuit, an environment monitor, an environment monitoring control circuit, a power supply circuit and a monitoring host. The bridge monitoring camera is installed on a pier below a bridge, the bridge monitoring camera faces a preset position of the bridge, the steel rail monitoring camera and the environment monitor are both installed on a bridge floor, and the steel rail monitoring camera faces a preset position of a steel rail. According to the utility model, the temperature and humidity data of the environment where the steel rail is located is acquired through the temperature and humidity sensor, the real-time image of the bridge is acquired through the bridge monitoring camera, the real-time image of the steel rail on the bridge floor is acquired through the steel rail monitoring camera, and the acquired data and images are transmitted to the monitoring host for calculation without manual participation; and the fault occurrence probability is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety monitoring, and in particular relates to a telescopic monitoring device for bridge rails. Background Art

[0002] The seamless track on the bridge is different from the seamless track generally laid on the roadbed. The bridge span structure expands and contracts due to temperature changes, and is also deflected by the train load. Therefore, in addition to the load of locomotive vehicles, rail temperature changes and train braking, the seamless track on the bridge will also be subject to the additional expansion force caused by the expansion and contraction deformation of the bridge span structure and the additional deflection force caused by the deflection deformation. At the same time, the rails also exert equal and opposite reaction forces on the bridge span structure. When the temperature rises, the rails cannot stretch and produce internal stress. When the strength of the rails is exceeded, bending, twisting, cracking and other problems are prone to occur. When the temperature drops, the rails will relax, affecting the stability and safety of driving. At present, the long rail sections are allowed to shrink freely with the rise and fall of temperature by automatically releasing stress or releasing stress regularly. However, the method of automatic stress release is mainly applicable to ground seamless tracks. For seamless tracks on bridges, due to the lack of sufficient relative change data and experience support of bridges and rails, it is difficult to ensure the accuracy of the design, and frequent manual inspections are required to assist. The method of periodic stress release is also limited by the lack of sufficient data and experience support, and it is difficult to ensure the accuracy of the set periodicity. In addition, when encountering extreme weather or drastic temperature changes, stress release is prone to untimely, and frequent manual inspections are also required. This is the shortcoming of the existing technology. Utility Model Content

[0003] The purpose of the utility model is to provide a bridge rail expansion and contraction monitoring device designed to solve the problems existing in the prior art in view of the defects existing in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A bridge rail expansion and contraction monitoring device, wherein the rail is arranged on a bridge deck above the bridge, and the expansion and contraction monitoring device comprises a main control circuit, a bridge monitoring camera, a rail monitoring camera, a camera control circuit, an environmental monitor, an environmental monitoring control circuit, a power supply circuit and a monitoring host;

[0006] The power supply circuit is connected to the input end of the main control circuit, the output end of the main control circuit is connected to the input end of the bridge monitoring camera and the input end of the rail monitoring camera through the camera control circuit, the output end of the main control circuit is connected to the input end of the environment monitor through the environment monitoring control circuit, and the output end of the bridge monitoring camera, the output end of the rail monitoring camera and the output end of the environment monitor are all connected to the monitoring host;

[0007] The bridge monitoring camera is installed on the pier under the bridge, with the bridge monitoring camera facing the preset position of the bridge. The rail monitoring camera and the environmental monitor are both installed on the bridge deck, with the rail monitoring camera facing the preset position of the rail.

[0008] A further improvement of the technical solution is that the main control circuit includes a main control chip U1 and a peripheral circuit, and the peripheral circuit includes a filter capacitor C1, a filter capacitor C2, a filter capacitor C3, a filter capacitor C4, an oscillator X1, a capacitor C5, a capacitor C6, a resistor R1 and a resistor R2;

[0009] The first end of the filter capacitor C1, the first end of the filter capacitor C2, the first end of the filter capacitor C3 and the first end of the filter capacitor C4 are all connected to an external 3V power supply, the first end of the filter capacitor C1 and the first end of the filter capacitor C3 are connected to the first pin of the main control chip U1, the first end of the filter capacitor C2 and the first end of the filter capacitor C4 are connected to the second pin of the main control chip U1, and the second end of the filter capacitor C1, the second end of the filter capacitor C2, the second end of the filter capacitor C3 and the second end of the filter capacitor C4 are all grounded;

[0010] The first end of the oscillator X1 and the first end of the capacitor C5 are both connected to the third pin of the main control chip U1, the second end of the capacitor C5 is grounded, the second end of the oscillator X1 and the first end of the capacitor C6 are both connected to the fourth pin of the main control chip U1, and the second end of the capacitor C6 is grounded; the first end of the resistor R1 is connected to the fifth pin of the main control chip U1, the first end of the resistor R2 is connected to the sixth pin of the main control chip U1, and the second end of the resistor R1 and the second end of the resistor R2 are both grounded.

[0011] A further improvement of the technical solution is that the main control chip U1 adopts a single-chip microcomputer of model MSP430FR5994IRGZ.

[0012] Further improvements of the present technical solution include: the camera control circuit includes a resistor R3, a transistor Q1, a freewheeling diode D1 and a relay K1, the first end of the resistor R3 is connected to the seventh pin of the main control chip U1, the second end of the resistor R3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the positive electrode of the freewheeling diode D1 and the first end of the coil of the relay K1, the negative electrode of the freewheeling diode D1 and the second end of the coil of the relay K1 are connected to an external 5V power supply, the first end of the normally open contact of the relay K1 is connected to the external 12V power supply, and the second end of the normally open contact of the relay K1 is connected to the bridge monitoring camera and the rail monitoring camera.

[0013] A further improvement of the technical solution is that the environment monitoring control circuit includes a resistor R4, a MOS tube Q2, a MOS tube chip Q3, a resistor R5 and a temperature and humidity sensor U2; the first end of the resistor R4 is connected to the eighth pin of the main control chip U1, the second end of the resistor R4 is connected to the gate of the MOS tube Q2, the source of the MOS tube Q2 is grounded, the drain of the MOS tube Q2 is connected to the first end of the resistor R5 and the gate of the MOS tube chip Q3, the second end of the resistor R5 and the source of the MOS tube chip Q3 are both connected to an external 3V power supply, the drain of the MOS tube chip Q3 is connected to the first pin of the temperature and humidity sensor U2, the second pin of the temperature and humidity sensor U2 is connected to the fifth pin of the main control chip U1, the third pin of the temperature and humidity sensor U2 is connected to the sixth pin of the main control chip U1, and the fourth pin of the temperature and humidity sensor U2 is grounded.

[0014] A further improvement of the technical solution is that the temperature and humidity sensor U2 adopts an I2C bus digital temperature and humidity sensor of model SHT11.

[0015] Further improvements of the technical solution include: the power supply circuit includes a solar cell, a resistor R6, a resistor R7, an operational amplifier U3 and a capacitor C7, the solar cell is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R6, the non-inverting input terminal of the operational amplifier U3 is grounded through the resistor R7, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3, the power supply terminal of the operational amplifier U3 is connected to an external power supply and grounded through the capacitor C7, the ground terminal of the operational amplifier U3 is grounded, and the output terminal of the operational amplifier U3 is connected to the ninth pin of the main control chip U1.

[0016] A further improvement of the technical solution is that the power circuit also includes a battery, the battery is connected to the battery through a hose cable, and the hose cable is fixed to the bridge pier through a first fixing card and a first chemical anchor bolt.

[0017] A further improvement of the technical solution is that it also includes a battery box, and the battery is fixed on the non-sunny side of the pier through the battery box.

[0018] A further improvement of the technical solution is that it also includes a solar energy fixing bracket and a second chemical anchor bolt, and the solar cell is fixed to the sunny side of the bridge pier through the solar energy fixing bracket and the second chemical anchor bolt.

[0019] The beneficial effect of the utility model is that the utility model collects temperature and humidity data of the environment in which the rails are located through temperature and humidity sensors, collects real-time images of the bridge through bridge monitoring cameras, and collects real-time images of the rails on the bridge deck through rail monitoring cameras, and transmits the collected data and images to the monitoring host for calculation without human participation, and can also provide an analysis basis for the design, construction and maintenance of future bridges and seamless rails, greatly reducing the probability of failures.

[0020] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect.

[0021] It can be seen that compared with the prior art, the present invention has outstanding substantial features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the monitoring device.

[0023] Figure 2 This is the circuit schematic diagram of the monitoring device.

[0024] Figure 3 This is the schematic diagram of the camera control circuit.

[0025] Figure 4 This is the schematic diagram of the environmental monitoring control circuit.

[0026] Figure 5 This is the schematic diagram of the power supply circuit.

[0027] 110 is a main control circuit, 120 is a bridge monitoring camera, 130 is a rail monitoring camera, 140 is a camera control circuit, 150 is an environment monitor, 160 is an environment monitoring control circuit, 170 is a power supply circuit, and 180 is a monitoring host. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation modes.

[0029] like Figure 1 As shown, the utility model provides a telescopic monitoring device for bridge rails, the rails are arranged on the bridge deck above the bridge, and the telescopic monitoring device comprises a main control circuit, a bridge monitoring camera, a rail monitoring camera, a camera control circuit, an environmental monitor, an environmental monitoring control circuit, a power supply circuit and a monitoring host; the power supply circuit is connected to the input end of the main control circuit, the output end of the main control circuit is connected to the input end of the bridge monitoring camera and the input end of the rail monitoring camera through the camera control circuit, the output end of the main control circuit is connected to the input end of the environmental monitor through the environmental monitoring control circuit, the output end of the bridge monitoring camera, the output end of the rail monitoring camera and the output end of the environmental monitor are all connected to the monitoring host; the bridge monitoring camera is installed on the pier under the bridge, the bridge monitoring camera faces the preset position of the bridge, the rail monitoring camera and the environmental monitor are both installed on the bridge deck, and the rail monitoring camera faces the preset position of the rail.

[0030] like Figure 2 As shown, the main control circuit includes a main control chip U1 and a peripheral circuit, and the peripheral circuit includes a filter capacitor C1, a filter capacitor C2, a filter capacitor C3, a filter capacitor C4, an oscillator X1, a capacitor C5, a capacitor C6, a resistor R1 and a resistor R2; the first end of the filter capacitor C1, the first end of the filter capacitor C2, the first end of the filter capacitor C3 and the first end of the filter capacitor C4 are all connected to an external 3V power supply, the first end of the filter capacitor C1 and the first end of the filter capacitor C3 are connected to a first pin of the main control chip U1, and the first end of the filter capacitor C2 and the first end of the filter capacitor C4 are connected to a second pin of the main control chip U1 The first end of the oscillator X1 and the first end of the capacitor C5 are connected to the third pin of the main control chip U1, the second end of the capacitor C5 is grounded, the second end of the oscillator X1 and the first end of the capacitor C6 are connected to the fourth pin of the main control chip U1, and the second end of the capacitor C6 is grounded; the first end of the resistor R1 is connected to the fifth pin of the main control chip U1, the first end of the resistor R2 is connected to the sixth pin of the main control chip U1, and the second end of the resistor R1 and the second end of the resistor R2 are grounded. The main control chip U1 adopts a single-chip microcomputer of model MSP430FR5994IRGZ.

[0031] like Figure 3 As shown, the camera control circuit includes a resistor R3, a transistor Q1, a freewheeling diode D1 and a relay K1, the first end of the resistor R3 is connected to the seventh pin of the main control chip U1, the second end of the resistor R3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the positive electrode of the freewheeling diode D1 and the first end of the coil of the relay K1, the negative electrode of the freewheeling diode D1 and the second end of the coil of the relay K1 are connected to an external 5V power supply, the first end of the normally open contact of the relay K1 is connected to an external 12V power supply, and the second end of the normally open contact of the relay K1 is connected to the bridge monitoring camera and the rail monitoring camera.

[0032] like Figure 4As shown, the environmental monitoring control circuit includes a resistor R4, a MOS tube Q2, a MOS tube chip Q3, a resistor R5 and a temperature and humidity sensor U2; the first end of the resistor R4 is connected to the eighth pin of the main control chip U1, the second end of the resistor R4 is connected to the gate of the MOS tube Q2, the source of the MOS tube Q2 is grounded, the drain of the MOS tube Q2 is connected to the first end of the resistor R5 and the gate of the MOS tube chip Q3, the second end of the resistor R5 and the source of the MOS tube chip Q3 are both connected to an external 3V power supply, the drain of the MOS tube chip Q3 is connected to the first pin of the temperature and humidity sensor U2, the second pin of the temperature and humidity sensor U2 is connected to the fifth pin of the main control chip U1, the third pin of the temperature and humidity sensor U2 is connected to the sixth pin of the main control chip U1, and the fourth pin of the temperature and humidity sensor U2 is grounded. Among them, the temperature and humidity sensor U2 adopts an I2C bus digital temperature and humidity sensor of model SHT11.

[0033] like Figure 5 As shown, the power supply circuit includes a solar cell, a resistor R6, a resistor R7, an operational amplifier U3 and a capacitor C7. The solar cell is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R6, the non-inverting input terminal of the operational amplifier U3 is grounded through the resistor R7, the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3, the power supply terminal of the operational amplifier U3 is connected to an external power supply and is grounded through the capacitor C7, the ground terminal of the operational amplifier U3 is grounded, and the output terminal of the operational amplifier U3 is connected to the ninth pin of the main control chip U1.

[0034] Since the bridge will expand and contract with changes in temperature, and the rail monitoring camera installed on the bridge deck to shoot the rails will change position with the expansion and contraction of the bridge, the expansion and contraction of the rails collected is relative to the change of the bridge, not an absolute value, and cannot truly reflect its actual change; therefore, the monitoring device is also equipped with a bridge monitoring camera on the bridge pier, which collects the expansion and contraction of the bridge through the bridge monitoring camera, and compensates for the expansion and contraction of the rails collected by the rail monitoring camera to calculate the actual expansion and contraction of the rails. In addition, the monitoring device can ensure that the shooting range includes the entire expansion and contraction range of the bridge and the image is clear by adjusting the pitch angle and zoom of the bridge monitoring camera. A ruler is pasted on the bridge to facilitate the human eye to have an intuitive feeling of the expansion and contraction when observing the picture.

[0035] In order to accurately reflect the relationship between bridges, rails and temperature changes, this device installs temperature and humidity sensors in open areas of the bridge deck to ensure real-time and accurate collection of ambient temperature and humidity, which are transmitted synchronously with the expansion and contraction of the bridge and rails, rather than simply providing an expansion and contraction amount that is unrelated to temperature and humidity, providing a basis for analyzing the relationship between bridges, rails and temperature and humidity changes.

[0036] The telescopic monitoring device adopts the power supply mode of solar energy + battery. Since the speed of the section line is very fast and the vehicles pass frequently, there will be wind on the bridge deck when the vehicles pass. The area of ​​the solar panel is large. If it is installed on the bridge deck, it is easy to be frequently stressed. In order to avoid possible safety hazards and receive as much light as possible, the solar panel is installed on the sunny side of the lower pier. At the same time, in order to reduce the space occupation and dust accumulation problems, a vertical installation method is adopted; a solar fixed bracket and a second chemical anchor are provided at the same time, and the solar cell is fixed to the sunny side of the pier through the solar fixed bracket and the second chemical anchor. In order to avoid the battery temperature being too high due to direct sunlight, which seriously affects the service life of the battery, the device installs the battery in the middle of the pier and the shade of the bridge. In addition, the battery is connected to the battery through a hose cable, and the hose cable is fixed to the pier through the first fixing card and the first chemical anchor. In addition, in order to ensure the service life of the battery, the monitoring device is also provided with a battery box, and the battery is fixed on the back side of the pier through the battery box.

[0037] In order to reduce the power consumption of the device and extend the standby time of the battery, this device uses an ultra-low power single-chip microcomputer as the main control chip. It is in a dormant state at ordinary times. At the same time, the power supply of the external temperature and humidity sensor is cut off, which can greatly reduce power consumption. The built-in timer of the single-chip microcomputer can be used to actively wake up and collect data at regular intervals. Only then will the power supply of the external temperature and humidity sensor be turned on. When the lighting conditions are good and the solar power supply is sufficient, temperature, humidity and image acquisition can be performed frequently. When the lighting conditions are poor or there is no sun at night and solar power cannot be supplied, the temperature can be collected frequently due to the low power consumption of the temperature and humidity sensor, and the power consumption of the camera can be adjusted according to the temperature change. When the temperature changes little, the rail bridge does not change much, and the image acquisition can be performed at a long interval. When the temperature change reaches a certain value, it directly triggers the photo taking to achieve the maximum degree of power saving and the timeliness of data acquisition at the same time. When the expansion and contraction of the bridge and rail is monitored to exceed the warning value, an alarm prompt is sent at the same time to prompt the user to check and handle it as soon as possible.

[0038] The above disclosure is only the preferred implementation mode of the utility model, but the utility model is not limited thereto. Any non-creative changes that can be thought of by technicians in this field, as well as several improvements and modifications made without departing from the principle of the utility model, should fall within the scope of protection of the utility model.

Claims

1. A bridge rail expansion and contraction monitoring device, wherein the rail is arranged on the bridge deck above the bridge, characterized in that: It includes a main control circuit, a bridge monitoring camera, a rail monitoring camera, a camera control circuit, an environmental monitor, an environmental monitoring control circuit, a power supply circuit and a monitoring host; The power supply circuit is connected to the input end of the main control circuit, the output end of the main control circuit is connected to the input end of the bridge monitoring camera and the input end of the rail monitoring camera through the camera control circuit, the output end of the main control circuit is connected to the input end of the environment monitor through the environment monitoring control circuit, and the output end of the bridge monitoring camera, the output end of the rail monitoring camera and the output end of the environment monitor are all connected to the monitoring host; The bridge monitoring camera is installed on the pier under the bridge, with the bridge monitoring camera facing the preset position of the bridge. The rail monitoring camera and the environmental monitor are both installed on the bridge deck, with the rail monitoring camera facing the preset position of the rail.

2. The bridge rail expansion and contraction monitoring device according to claim 1, characterized in that: The main control circuit includes a main control chip U1 and a peripheral circuit, and the peripheral circuit includes a filter capacitor C1, a filter capacitor C2, a filter capacitor C3, a filter capacitor C4, an oscillator X1, a capacitor C5, a capacitor C6, a resistor R1 and a resistor R2; The first end of the filter capacitor C1, the first end of the filter capacitor C2, the first end of the filter capacitor C3 and the first end of the filter capacitor C4 are all connected to an external 3V power supply, the first end of the filter capacitor C1 and the first end of the filter capacitor C3 are connected to the first pin of the main control chip U1, the first end of the filter capacitor C2 and the first end of the filter capacitor C4 are connected to the second pin of the main control chip U1, and the second end of the filter capacitor C1, the second end of the filter capacitor C2, the second end of the filter capacitor C3 and the second end of the filter capacitor C4 are all grounded; The first end of the oscillator X1 and the first end of the capacitor C5 are both connected to the third pin of the main control chip U1, the second end of the capacitor C5 is grounded, the second end of the oscillator X1 and the first end of the capacitor C6 are both connected to the fourth pin of the main control chip U1, and the second end of the capacitor C6 is grounded; the first end of the resistor R1 is connected to the fifth pin of the main control chip U1, the first end of the resistor R2 is connected to the sixth pin of the main control chip U1, and the second end of the resistor R1 and the second end of the resistor R2 are both grounded.

3. The bridge rail expansion and contraction monitoring device according to claim 2, characterized in that: The main control chip U1 adopts a single-chip microcomputer model MSP430FR5994IRGZ.

4. The bridge rail expansion and contraction monitoring device according to claim 2, characterized in that: The camera control circuit includes a resistor R3, a transistor Q1, a freewheeling diode D1 and a relay K1. The first end of the resistor R3 is connected to the seventh pin of the main control chip U1, the second end of the resistor R3 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the positive electrode of the freewheeling diode D1 and the first end of the coil of the relay K1, the negative electrode of the freewheeling diode D1 and the second end of the coil of the relay K1 are connected to an external 5V power supply, the first end of the normally open contact of the relay K1 is connected to an external 12V power supply, and the second end of the normally open contact of the relay K1 is connected to the bridge monitoring camera and the rail monitoring camera.

5. The bridge rail expansion and contraction monitoring device according to claim 2, characterized in that: The environment monitoring control circuit includes a resistor R4, a MOS tube Q2, a MOS tube chip Q3, a resistor R5 and a temperature and humidity sensor U2; the first end of the resistor R4 is connected to the eighth pin of the main control chip U1, the second end of the resistor R4 is connected to the gate of the MOS tube Q2, the source of the MOS tube Q2 is grounded, the drain of the MOS tube Q2 is connected to the first end of the resistor R5 and the gate of the MOS tube chip Q3, the second end of the resistor R5 and the source of the MOS tube chip Q3 are both connected to an external 3V power supply, the drain of the MOS tube chip Q3 is connected to the first pin of the temperature and humidity sensor U2, the second pin of the temperature and humidity sensor U2 is connected to the fifth pin of the main control chip U1, the third pin of the temperature and humidity sensor U2 is connected to the sixth pin of the main control chip U1, and the fourth pin of the temperature and humidity sensor U2 is grounded.

6. The expansion and contraction monitoring device for bridge rails according to claim 5, characterized in that: The temperature and humidity sensor U2 uses an I2C bus digital temperature and humidity sensor model SHT11.

7. The bridge rail expansion and contraction monitoring device according to claim 1, characterized in that: The power supply circuit includes a solar cell, a resistor R6, a resistor R7, an operational amplifier U3 and a capacitor C7. The solar cell is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R6. The non-inverting input terminal of the operational amplifier U3 is grounded through the resistor R7. The output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3. The power supply terminal of the operational amplifier U3 is connected to an external power supply and is grounded through the capacitor C7. The ground terminal of the operational amplifier U3 is grounded. The output terminal of the operational amplifier U3 is connected to the ninth pin of the main control chip U1.

8. The bridge rail expansion and contraction monitoring device according to claim 7, characterized in that: The power circuit also includes a storage battery, which is connected to the storage battery through a hose cable, and the hose cable is fixed to the bridge pier through a first fixing card and a first chemical anchor bolt.

9. The bridge rail expansion and contraction monitoring device according to claim 8, characterized in that: It also includes a battery box, through which the storage battery is fixed on the sun-proof side of the bridge pier.

10. The bridge rail expansion and contraction monitoring device according to claim 7, characterized in that: It also includes a solar energy fixing bracket and a second chemical anchor bolt, and the solar cell is fixed to the sunny side of the pier through the solar energy fixing bracket and the second chemical anchor bolt.

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