Passive sensing type communication tunnel intelligent lighting control system

Abstract

The invention discloses a passive sensing type communication tunnel intelligent lighting control system which comprises a piezoelectric sensing device, a Bluetooth wireless communication integration module, a Bluetooth wireless receiving module and a lighting control module. The piezoelectric sensing device is arranged in the road surface of the tunnel and generates a vehicle passing signal when being rolled by a passing vehicle; the Bluetooth wireless communication integrated module is electrically connected with the piezoelectric sensing device and is used for sending a vehicle passing signal; the Bluetooth wireless receiving module is matched with the Bluetooth wireless communication integration module and is used for receiving the vehicle passing signal and sending the vehicle passing signal and a signal source to the illumination control module; and the illumination control module is used for identifying the position of the vehicle according to the vehicle passing signal and the signal source, calculating the light lightening time, lightening the corresponding light and completing tunnel intelligent illumination control. According to the invention, the cost of the tunnel intelligent illumination control system is reduced, the hidden danger of lamp turn-off is solved, the energy-saving and illumination requirements can be considered, and the accurate illumination control of the driving environment is ensured.

Description

Technical Field

[0001] The present invention relates to the field of tunnel lighting control, and particularly to a passive sensing type communication tunnel intelligent lighting control system. Background Art

[0002] As an essential part of the operation of highway tunnels, the tunnel lighting system has high energy consumption and high operating costs. If conventional lighting control is adopted, the lighting is still turned on when there is no vehicle passing through, resulting in the phenomenon of "lighting without vehicles", which will seriously reduce the utilization rate of tunnel lighting, causing huge energy waste and economic losses. Developing tunnel energy-saving technologies is the only way to reduce the operating costs of highway tunnels.

[0003] A relatively common solution strategy in the prior art is "microwave radar / infrared optoelectronic sensing + section-by-section control". Sensors are installed in front at a certain distance to detect oncoming vehicles, and then the corresponding lamps in the interval are lit. However, there are two drawbacks. One is the "wiring" problem. Since its sensing range is only dozens of meters, sensors can only be installed in front, which will not only increase the construction cost but also pose potential cable safety problems. The other is the "lamp extinguishing" problem. When the vehicle cannot drive into the next section within the lit time and drives out of the sensing range of the previous section, the sudden lamp extinguishing will bring serious safety hazards. Summary of the Invention

[0004] In view of the above deficiencies in the prior art, the passive sensing type communication tunnel intelligent lighting control system provided by the present invention solves the problem of potential safety hazards existing in the prior tunnel lighting control technology.

[0005] In order to achieve the above invention object, the technical solution adopted by the present invention is as follows:

[0006] Provide a passive sensing type communication tunnel intelligent lighting control system, which includes a piezoelectric sensor device, a Bluetooth wireless communication integration module, a Bluetooth wireless receiving module, and a lighting control module;

[0007] The piezoelectric sensor device is arranged in the road surface of the tunnel and generates a signal of a vehicle passing by when being run over by a passing vehicle;

[0008] The Bluetooth wireless communication integration module is electrically connected to the piezoelectric sensor device and is used for sending the signal of a vehicle passing by;

[0009] The Bluetooth wireless receiving module is matched with the Bluetooth wireless communication integration module and is used for receiving the signal of a vehicle passing by and sending the signal of a vehicle passing by and the signal source to the lighting control module;

[0010] The lighting control module is used for identifying the vehicle position according to the signal of a vehicle passing by and the signal source, calculating the lighting time, and lighting the corresponding lights to complete the intelligent lighting control of the tunnel.

[0011] The beneficial effects of the present invention are as follows: The system uses piezoelectric sensor devices to sense whether a vehicle is passing by, and sends the signal that a vehicle has passed through to the lighting control module through the Bluetooth wireless communication integration module and the Bluetooth wireless receiving module. The vehicle position is identified and the lighting time is calculated based on the signal that a vehicle has passed through and the signal source, and the corresponding lights are lit, completing the intelligent lighting control of the tunnel, realizing the wireless transmission of signals. Moreover, the piezoelectric sensor device is a passive device, which not only solves the wiring hidden danger problem in the prior art, but also can accurately obtain the vehicle position, avoiding the sudden extinguishing of lights caused by the vehicle being unable to drive into the next section within the lighting time, and also helps to further save energy.

[0012] Further, the piezoelectric sensor device is a piezoelectric film.

[0013] The beneficial effects of adopting the above further technical solution are: The piezoelectric film is small in volume, which can effectively reduce the construction difficulty. When a vehicle passes over the piezoelectric film, the piezoelectric film can convert the extrusion into electrical energy, and then supply power to the Bluetooth wireless communication integration module, which helps to further save energy.

[0014] Further, the lighting control module is a PLC distributed IO device.

[0015] Further, the PLC distributed IO device includes multiple PLC distributed IO modules; a single PLC distributed IO module controls the lights within its jurisdiction; each PLC distributed IO module receives the signal that a vehicle has passed through generated by two adjacent piezoelectric sensor devices.

[0016] The beneficial effects of adopting the above further technical solution are: The PLC distributed IO modules can be wired in a daisy-chain manner and adopt the standard Modbus RTU and Modubs TCP communication protocols, and can easily communicate with the upper computer and the Bluetooth wireless receiving module.

[0017] Further, two adjacent piezoelectric sensor devices are located at both ends of the jurisdiction of a single PLC distributed IO module.

[0018] The beneficial effects of adopting the above further technical solution are: It is convenient to determine the position of a single jurisdiction and facilitate inspection.

[0019] Further, two adjacent piezoelectric sensor devices are arranged in a dislocation manner with respect to the jurisdiction of a single PLC distributed IO module, that is, one piezoelectric sensor device is located in front of the jurisdiction of a single PLC distributed IO module, and the other piezoelectric sensor device is located within the jurisdiction of a single PLC distributed IO module.

[0020] The beneficial effects of adopting the above further technical solution are as follows: Before the vehicle runs over the rear piezoelectric sensor device, the lights behind the rear piezoelectric sensor device will also turn on, thereby illuminating the road ahead for the driver and passengers and avoiding the problem of the lights going out caused by just running over the rear piezoelectric sensor device and then getting out of the lighting range.

[0021] Further, for any PLC distributed IO module, when the number of vehicle passing signals generated by the front piezoelectric sensor device is greater than the number of vehicle passing signals generated by the rear piezoelectric sensor device, it is determined that there is a vehicle within the jurisdiction and the lights within the jurisdiction are continuously lit;

[0022] When the number of vehicle passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle passing signals generated by the rear piezoelectric sensor device and the current lighting duration is less than the duration threshold, it is determined that the lighting needs to be maintained within the jurisdiction and the lights within the jurisdiction are continuously lit;

[0023] When the number of vehicle passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle passing signals generated by the rear piezoelectric sensor device and the current state is the light-off state, it is determined that there is no vehicle passing within the jurisdiction and the light-off state is maintained;

[0024] When the number of vehicle passing signals generated by the front piezoelectric sensor device is less than the number of vehicle passing signals generated by the rear piezoelectric sensor device, it is determined that the system may have a fault and a patrol warning needs to be generated.

[0025] The beneficial effects of adopting the above further technical solution are as follows: It ensures instant lighting when there is a vehicle within the jurisdiction, instant light-off after the vehicle passes, and timely warning when a fault occurs, effectively improving the user experience of the system.

[0026] Further, the calculation expression of the duration threshold is:

[0027]

[0028] where t is the duration threshold; a is a constant greater than 1; L is the length of the jurisdiction; V is the tunnel speed limit.

[0029] The beneficial effects of adopting the above further technical solution are as follows: The setting of the duration threshold can delay the turning off of the lights for the passed area after the vehicle passes through the current jurisdiction, avoiding the discomfort caused to the driver by sudden bright and dark, and improving driving safety.

[0030] Further, the lighting control module further includes a manual control button for manual lighting control.

[0031] Further, the lighting control module further includes a remote control interface for remote lighting control.

[0032] The beneficial effects of adopting the above further technical solutions are as follows: realizing on-site manual lighting control and remote lighting control to meet the lighting control requirements in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a working schematic diagram of this system;

[0034] Figure 2 is a simulation schematic diagram of a vehicle rolling over a piezoelectric sensor device;

[0035] Figure 3 is an intelligent lighting control circuit diagram;

[0036] Figure 4 is a PLC distributed I / O diagram. DETAILED DESCRIPTION OF THE INVENTION

[0037] The following describes the specific embodiments of the present invention to facilitate those skilled in the art of this technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

[0038] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the passive sensing type communication tunnel intelligent lighting control system includes a piezoelectric sensor device, a Bluetooth wireless communication integration module, a Bluetooth wireless receiving module, and a lighting control module;

[0039] The piezoelectric sensor device is laid in the road surface of the tunnel and generates a signal indicating that a vehicle has passed when it is rolled over by a passing vehicle;

[0040] The Bluetooth wireless communication integration module is electrically connected to the piezoelectric sensor device and is used for sending the signal indicating that a vehicle has passed;

[0041] The Bluetooth wireless receiving module is matched with the Bluetooth wireless communication integration module and is used for receiving the signal indicating that a vehicle has passed and sending the signal indicating that a vehicle has passed and the signal source to the lighting control module;

[0042] The lighting control module is used for identifying the vehicle position according to the signal indicating that a vehicle has passed and the signal source, calculating the lighting time, and lighting the corresponding lights to complete the intelligent lighting control of the tunnel.

[0043] In the specific implementation process, the piezoelectric sensor device is a piezoelectric film, such as Figure 2As shown, when the vehicle passes over the piezoelectric film, the piezoelectric film can convert the extrusion into electrical energy, which can directly serve as the power source for the Bluetooth wireless communication integration module. This enables the system to use the power-on status of the Bluetooth wireless communication integration module as a signal indicating that a vehicle has passed. When the Bluetooth wireless receiving module recognizes the signal of the corresponding Bluetooth wireless communication integration module, it means that the Bluetooth wireless communication integration module has been successfully powered on, which also means that a vehicle has passed over the piezoelectric sensor device. In addition, a small start-up power supply can be configured for each Bluetooth wireless communication integration module, and the electrical energy generated by the piezoelectric film is used to replenish the start-up power supply. Whether a vehicle has passed is monitored by detecting the electrical energy generated by the piezoelectric film. Both methods can enable the Bluetooth wireless communication integration module to avoid laying additional power supply lines, reducing the laying cost of the lighting control system.

[0044] In the specific implementation process, the lighting control module is a PLC distributed IO device. The PLC distributed IO device includes multiple PLC distributed IO modules; a single PLC distributed IO module controls the lights within its jurisdiction; each PLC distributed IO module receives the vehicle passing signals generated by two adjacent piezoelectric sensor devices.

[0045] In this embodiment, to facilitate determining the position of a single jurisdiction and for easy inspection, two adjacent piezoelectric sensor devices are located at both ends of the jurisdiction of a single PLC distributed IO module.

[0046] In this embodiment, in addition to the above arrangement, two adjacent piezoelectric sensor devices are arranged in a staggered manner with respect to the jurisdiction of a single PLC distributed IO module, that is, one piezoelectric sensor device is in front of the jurisdiction of a single PLC distributed IO module, and the other piezoelectric sensor device is within the jurisdiction of a single PLC distributed IO module. This arrangement enables the lights behind the rear piezoelectric sensor device to also turn on before the vehicle rolls over the rear piezoelectric sensor device, thereby illuminating the road ahead for the driver and passengers and avoiding the problem of the lights going out when the vehicle just passes over the rear piezoelectric sensor device and leaving the lighting range.

[0047] For any PLC distributed IO module, when the number of vehicle passing signals generated by the front piezoelectric sensor device is greater than the number of vehicle passing signals generated by the rear piezoelectric sensor device, it is determined that there is a vehicle within the jurisdiction and the lights within the jurisdiction are continuously lit;

[0048] When the number of vehicle passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle passing signals generated by the rear piezoelectric sensor device and the current lighting duration is less than the duration threshold, it is determined that the lighting within the jurisdiction needs to be maintained and the lights within the jurisdiction are continuously lit;

[0049] When the number of vehicle - passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle - passing signals generated by the rear piezoelectric sensor device and the current state is the light - off state, it is determined that there is no vehicle passing within the jurisdiction, and the light - off state is maintained;

[0050] When the number of vehicle - passing signals generated by the front piezoelectric sensor device is less than the number of vehicle - passing signals generated by the rear piezoelectric sensor device, it is determined that the system may have a fault, and a patrol warning is generated.

[0051] The calculation expression of the duration threshold is:

[0052]

[0053] Where t is the duration threshold; a is a constant greater than 1. When a is larger, the lighting duration is longer; L is the length of the jurisdiction; V is the tunnel speed limit.

[0054] In the specific implementation process, in order to adapt to the lighting control requirements in different scenarios, the lighting control module also includes a manual control button and a remote control interface for manual lighting control and remote lighting control.

[0055] In this embodiment, the front piezoelectric sensor device refers to the piezoelectric sensor device that is first crushed by the vehicle in the vehicle traveling direction, and the rear piezoelectric sensor device refers to the piezoelectric sensor device that is crushed by the vehicle later in the vehicle traveling direction. Similarly, "front" refers to the direction / position where the vehicle passes first, and "rear" refers to the direction / position where the vehicle passes later.

[0056] In summary, the present invention reduces the cost of the tunnel intelligent lighting control system, solves the hidden danger of light - off, can balance energy conservation and lighting requirements, ensures precise lighting control of the driving environment, and can reduce about 70% of energy loss compared with constant lighting under the basic conditions of meeting intelligent lighting.

Claims

1. A passive sensing communication tunnel intelligent lighting control system, characterized in that: It includes a piezoelectric sensor device, a Bluetooth wireless communication integrated module, a Bluetooth wireless receiving module and a lighting control module; Piezoelectric sensors are placed on the road surface of the tunnel and generate vehicle passing signals when they are run over by passing vehicles. A Bluetooth wireless communication integrated module is electrically connected to the piezoelectric sensor device and is used to send a vehicle passing signal; A Bluetooth wireless receiving module, matched with the Bluetooth wireless communication integrated module, is used to receive a vehicle passing signal and send the vehicle passing signal and the signal source to the lighting control module; The lighting control module is used to identify the vehicle position according to the vehicle passing signal and the signal source, calculate the light lighting time, light up the corresponding lights, and complete the intelligent lighting control of the tunnel.

2. The passive sensing communication tunnel intelligent lighting control system according to claim 1 is characterized in that: The piezoelectric sensor device is a piezoelectric film.

3. The passive sensing communication tunnel intelligent lighting control system according to claim 1 is characterized in that: The lighting control module is a PLC distributed IO device.

4. The passive sensing communication tunnel intelligent lighting control system according to claim 3 is characterized in that: The PLC distributed IO equipment includes multiple PLC distributed IO modules; a single PLC distributed IO module controls the lights within its jurisdiction; each PLC distributed IO module receives vehicle passing signals generated by two adjacent piezoelectric sensor devices.

5. The passive sensing communication tunnel intelligent lighting control system according to claim 4 is characterized in that: Two adjacent piezoelectric sensor devices are located at two ends of the jurisdiction of a single PLC distributed IO module.

6. The passive sensing communication tunnel intelligent lighting control system according to claim 4 is characterized in that: Two adjacent piezoelectric sensor devices are staggered with respect to the jurisdiction of a single PLC distributed IO module, that is, one piezoelectric sensor device is located in front of the jurisdiction of a single PLC distributed IO module, and the other piezoelectric sensor device is located within the jurisdiction of a single PLC distributed IO module.

7. The passive sensing communication tunnel intelligent lighting control system according to claim 5 or 6, characterized in that: For any PLC distributed IO module, when the number of vehicle passing signals generated by the front piezoelectric sensor device is greater than the number of vehicle passing signals generated by the rear piezoelectric sensor device, it is determined that there is a vehicle within the jurisdiction and the lights within the jurisdiction are continuously lit; When the number of vehicle passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle passing signals generated by the rear piezoelectric sensor device and the current lighting duration is less than the duration threshold, it is determined that the lighting within the jurisdiction needs to be maintained and the lights within the jurisdiction are continuously lit; When the number of vehicle passing signals generated by the front piezoelectric sensor device is equal to the number of vehicle passing signals generated by the rear piezoelectric sensor device and the light is currently off, it is determined that no vehicle is passing within the jurisdiction and the light remains off; When the number of vehicle passing signals generated by the front piezoelectric sensor device is less than the number of vehicle passing signals generated by the rear piezoelectric sensor device, it is determined that the system is suspected of having a fault and a warning that an inspection is required is generated.

8. The passive sensing communication tunnel intelligent lighting control system according to claim 7 is characterized in that: The calculation expression of the duration threshold is: Where t is the time threshold; a is a constant greater than 1; L is the length of the jurisdiction; and V is the tunnel speed limit.

9. The passive sensing communication tunnel intelligent lighting control system according to claim 1 is characterized in that: The lighting control module also includes a manual control button for performing manual lighting control.

10. The passive sensing communication tunnel intelligent lighting control system according to claim 1, characterized in that: The lighting control module also includes a remote control interface for performing remote lighting control.

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