CN211651818U - Self-powered subway noise monitoring device - Google Patents
Self-powered subway noise monitoring device Download PDFInfo
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- CN211651818U CN211651818U CN202020309405.4U CN202020309405U CN211651818U CN 211651818 U CN211651818 U CN 211651818U CN 202020309405 U CN202020309405 U CN 202020309405U CN 211651818 U CN211651818 U CN 211651818U
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- self
- data acquisition
- noise
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- subway
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Abstract
A self-powered subway noise monitoring device comprises a self-powered noise sensor, a data acquisition card, a data acquisition instrument, a signal transmitting device, a remote control switch and a storage battery, wherein the self-powered noise sensor is arranged in a noise-prone area on each subway line, the self-powered noise sensor is connected with the data acquisition card, the data acquisition card is connected with the data acquisition instrument, the data acquisition instrument is provided with the signal transmitting device and the remote control switch, the data acquisition instrument is connected with the storage battery, and the storage battery is connected with a vibration energy capturing device arranged on a track. Can the utility model discloses can turn into the electric energy with noise and vibration, collect noise data when realizing the self-power. The self-powered noise sensor generates an electric signal through sound wave vibration without supplying power to the sensor by other equipment, but the electric signal generated by the sensor is also only a data signal and does not supply power to other equipment.
Description
Technical Field
The utility model belongs to the technical field of the noise monitoring equipment, concretely relates to self-powered subway noise monitoring devices.
Background
Along with the popularization of rail transit, the noise generated during the operation of subway trains is more and more emphasized by people. The harm of noise to the human body is systemic, and can cause changes in the auditory system and also affect the non-auditory system. The early stages of these effects are mainly physiological changes, which can be caused by prolonged exposure to relatively intense noise. In addition, noise in the workplace can also interfere with verbal communication, affect work efficiency, and even cause accidents. When the train reaches or exceeds a certain speed, the abrasion of wheels and steel rails can induce strong vibration of a track structure, and then a large amount of noise is generated, the comfort and safety of subway operation are influenced, and the damage such as train derailment and the like can be caused in serious cases. Therefore, the method can acquire the noise data in the subway tunnel in real time and take corresponding measures in time, and is very important for safe operation of the subway and improvement of riding comfort of passengers. However, the conventional noise monitoring apparatus requires an external power source and thus cannot be widely disposed in the subway tunnel.
Sound waves and vibrations are common energy forms in nature, but the application of the sound waves and the vibrations is not regarded as important, and the energy is wasted, and the noise and the vibration of the track are representative. Therefore, the energy is collected and converted into electric energy or energy in other forms through the sound wave and vibration energy collectors to supply power for other equipment, so that the utilization rate of energy is improved, and novel green energy is provided for other equipment.
Disclosure of Invention
The self-powered subway noise monitoring device can convert noise and vibration into electric energy, and collects noise data while realizing self-power supply.
The utility model provides a technical scheme that its technical problem adopted is:
a self-powered subway noise monitoring device comprises a self-powered noise sensor, a data acquisition card, a data acquisition instrument, a signal transmitting device, a remote control switch and a storage battery, wherein the self-powered noise sensor is arranged in a noise-prone area on each subway line, the self-powered noise sensor is connected with the data acquisition card, the data acquisition card is connected with the data acquisition instrument, the data acquisition instrument is provided with the signal transmitting device and the remote control switch, the data acquisition instrument is connected with the storage battery, and the storage battery is connected with a vibration energy capturing device arranged on a track.
Further, the vibration energy harvesting device comprises a shell, a first dielectric material film, a first electrode layer, a second dielectric material film and a second electrode layer, wherein the first dielectric material film is connected with the first electrode layer, the second dielectric material film and the second electrode layer are arranged in a power generation region, the region between the first electrode layer and the second dielectric material film is connected with the output side of the power generation unit, and the output side of the power generation unit is connected with the power supply end of the noise sensor.
Preferably, the noise sensor is arranged beside a steel rail outside the subway according to the space size at a measuring point beside a subway line.
The remote control switch is connected with a remote control end, and the remote control end adopts an intelligent computer or an intelligent mobile phone.
Preferably, the method comprises the following steps: the vibration energy capturing device is fixed on the lower side surface of the steel rail by adopting an adhesive.
The self-powered noise monitoring device converts sound waves into electric signals, the electric signals are directly collected by the data collection card, and data analysis is carried out by the data collection instrument after the electric signals are collected by the data collection card. The remote control switch is turned on, and the storage battery supplies power to the data acquisition instrument, the signal transmitting device and the data acquisition card. The remote control switch controls the data acquisition instrument, the signal transmitting device and the data acquisition card to be turned off or on, so that the whole set of device can be turned on only when the subway runs. During the off-line period of the subway, the whole set of equipment can be kept in a closed standby state. The vibration energy harvesting device arranged on the track can supply power to the whole set of equipment during the operation of the subway, and redundant electric energy is stored in the storage battery.
When the whole self-powered noise monitoring device is started, the noise monitoring device converts sound wave energy of a noise prone area into electric energy, the data acquisition card receives an electric signal and then transmits data to the data acquisition instrument, and the data acquisition instrument utilizes the signal transmitter to remotely transmit noise data.
The beneficial effects of the utility model are that:
1. the utility model discloses an arrange noise monitoring devices around subway line, the monitoring includes the subway platform, the small diameter turning of subway, the adjacent subway track of underground commercial street etc. can produce great noise or need the region of strict control noise for the noise data of gathering can reflect the overall stability situation in the tunnel under the subway operation state comprehensively, and the data of gathering are accurate reliable, can provide data support for follow-up taking to fall measures or orbital maintenance of making an uproar. The method has important values for safe operation of the subway and improvement of riding comfort of passengers.
2. The utility model discloses a track vibration provides the electric energy, supplies power to monitoring devices through turning into the electric energy with vibration mechanical energy, and the battery can save the electric energy and in order to ensure monitoring devices's long-term operation, does not receive the influence of weather, realizes the make full use of vibration energy, satisfies low carbon environmental protection requirement. Meanwhile, the remote control switch can control the monitoring device to be turned on and off, so that the whole device can be turned on only when the subway runs and turned off when the subway stops running.
3. The utility model discloses a self-power noise sensor compares traditional noise sensor simple structure, and is small, simple to operate.
Drawings
Fig. 1 is a schematic structural diagram of a noise sensor of a self-powered subway noise monitoring device;
FIG. 2 is a side view of a noise sensor of a self-powered subway noise monitoring device;
fig. 3 is a structure diagram of the field arrangement of the device of the present invention.
Description of reference numerals: 1-self powered noise sensor; 2-pores; 3-a wire; 4-a data acquisition card; 5-a data acquisition instrument; 6-a signal emitting device; 7-remote control switch; 8-a storage battery; 9-a vibration energy harvesting device; 10-steel rail; 11-a noise sensor housing; 12-a first film of dielectric material; 13-a first electrode layer; 14-a second film of dielectric material; 15-second electrode layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-3, a self-powered subway noise monitoring device is applied to a tunnel and an outdoor subway line, and comprises a self-powered noise sensor 1, a data acquisition card 4, a data acquisition instrument 5, a signal transmitting device 6, a remote control switch 7, a storage battery 8 and a vibration energy harvesting device 9, wherein all the parts are connected through a wire 3. The self-powered noise sensor 1 is arranged in an area including a subway platform, a small-radius turn of a subway, a subway track adjacent to an underground commercial street, and the like, which can generate large noise or need strict control of the noise. The noise sensor 1 is connected with the data acquisition card 4, the data acquisition card 4 is connected with the data acquisition instrument 5, the data acquisition instrument 5 is connected with the signal transmitting device 6 and the remote control switch 7, the storage battery 8 is connected with the data acquisition instrument 5, and the storage battery 8 is powered by the vibration energy harvesting device 9 arranged on the track. The device adopts an intelligent computer or an intelligent mobile phone to remotely control through software.
The self-powered noise sensor 1 operates on the principle that when a sound source is present, sound waves are directly driven through the air holes 2 or the first dielectric material film 12 is driven to vibrate by the generated air pressure difference. At certain sound frequencies, pressure levels and gap distances, the deformation of the first film of dielectric material 12 causes contact tribocharging between the second film of dielectric material 14 and the second electrode layer 15. Due to the difference in electron affinity of the two materials, an electric charge can be formed on the surface of the second dielectric material film 14. When the sound wave dissipates or the air pressure changes, the separation between the charged second dielectric material film 14 and the first electrode layer 13 caused by the mechanical motion causes the electrons to flow from the first electrode layer 13 to the second electrode layer 15 under the action of electrostatic induction to generate a return electrical signal output. The steady state vibration of the material satisfies the Helmholtz equation.
The vibration energy harvesting device 9 is arranged below the steel rail 10, and when a train passes through the vibration energy harvesting device, the steel rail 10 vibrates, and mechanical energy is converted into electric energy to supply energy to the noise monitoring device.
The dielectric material is selected from materials with relatively significant triboelectric properties, including and not limited to: polyvinylidene fluoride PVDF, polytetrafluoroethylene PTFE, polymethyl methacrylate PMMA, polyvinyl chloride PVC, polyester resin PET, polyester resin Kapton, nylon and the like.
When the remote control switch 7 is turned on, the subway noise monitoring device supplies power to the data acquisition instrument 5, the signal transmitting device 6 and the data acquisition card 4 after the storage battery 8 supplies power to the subway noise monitoring device. The remote control switch 7 controls the data acquisition instrument 5, the signal transmitting device 6 and the data acquisition card 4 to be turned off or on, so that the whole set of device can be turned on only when the subway runs. During the off-line period of the subway, the whole set of equipment can be kept in a closed standby state. The vibration energy harvesting device 9 arranged on the track can supply power to the whole set of equipment during the operation of the subway, and redundant electric energy is stored in the storage battery 8.
The invention is not limited to the applications listed in the description and the embodiments, but various corresponding modifications and variations can be made by those skilled in the art, and all the corresponding modifications and variations belong to the protection scope of the claims of the present invention.
Claims (5)
1. A self-powered subway noise monitoring device is characterized by comprising a self-powered noise sensor, a data acquisition card, a data acquisition instrument, a signal transmitting device, a remote control switch and a storage battery, wherein the self-powered noise sensor is arranged in a noise-prone area on each subway line, the self-powered noise sensor is connected with the data acquisition card, the data acquisition card is connected with the data acquisition instrument, the data acquisition instrument is provided with the signal transmitting device and the remote control switch, the data acquisition instrument is connected with the storage battery, and the storage battery is connected with a vibration energy harvesting device installed on a rail.
2. A self-powered subway noise monitoring device as claimed in claim 1, wherein said self-powered noise sensor comprises a housing, a first dielectric material film, a first electrode layer, a second dielectric material film and a second electrode layer, said first dielectric material film is connected with said first electrode layer, said second dielectric material film and said second electrode layer, the area between said first electrode layer and said second dielectric material film is a power generation area, said first electrode layer and said second electrode layer are respectively connected with the output side of said power generation unit, and said output side of said power generation unit is connected with the power supply terminal of said noise sensor.
3. A self-powered subway noise monitoring device as claimed in claim 1 or 2, wherein said noise sensor is arranged beside the subway line outside steel rail according to space size at the measuring point beside the subway line.
4. A self-powered subway noise monitoring device as claimed in claim 1 or 2, wherein said remote control switch is connected to a remote control terminal, and said remote control terminal is a smart computer or a smart phone.
5. A self-powered subway noise monitoring device as claimed in claim 1 or 2, wherein said vibration energy capturing means is fixed to the underside surface of the rail by adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309405.4U CN211651818U (en) | 2020-03-13 | 2020-03-13 | Self-powered subway noise monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020309405.4U CN211651818U (en) | 2020-03-13 | 2020-03-13 | Self-powered subway noise monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211651818U true CN211651818U (en) | 2020-10-09 |
Family
ID=72687771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020309405.4U Expired - Fee Related CN211651818U (en) | 2020-03-13 | 2020-03-13 | Self-powered subway noise monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211651818U (en) |
-
2020
- 2020-03-13 CN CN202020309405.4U patent/CN211651818U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |