Improved noise signal acquisition device for wind turbine noise testing
By introducing an antenna mast structure and windproof ropes for fixation into the wind power noise testing equipment, and integrating the internal components of the equipment, the problems of antennas being prone to tipping over, difficulties in nighttime retrieval, and messy cables have been solved, thereby improving the stability and signal quality of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHONGREN SHANGKE NEW ENERGY TECH CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-07
AI Technical Summary
In existing wind power noise tests, the antenna supports of wireless equipment are easily blown down by the wind, the equipment is difficult to retrieve at night, the cables are messy and easily damaged, and the location of wireless communication solutions is difficult to determine in grasslands or fields.
An improved noise signal acquisition device for wind power noise testing was designed. It adopts an antenna mast structure and windproof ropes for fixation, integrates a network bridge and data acquisition equipment to increase the integration and stability of the device, and installs a flashing LED light on the top of the antenna mast to facilitate the retrieval of the device at night.
It improves the antenna's wind resistance, reduces the probability of the equipment being blown over, simplifies on-site installation, enhances communication stability and signal quality, and facilitates nighttime equipment recovery.
Smart Images
Figure CN224471143U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of noise detection technology, specifically relating to an improved noise signal acquisition device for wind power noise testing. Background Technology
[0002] In order to monitor the various conditions of wind turbine generators and wind power towers in real time, wind power stations need to measure environmental parameters such as wind speed, wind direction, air pressure, and temperature around the wind power towers, as well as equipment parameters such as wind turbine power, wind speed, yaw position, pitch angle, and noise. Among these, noise mainly measures the operating noise of the wind turbine and background noise.
[0003] Based on the current testing standard GB / T22516-2015 "Noise Measurement Method for Wind Turbine Generator Sets", the acoustic sensor in the noise testing system needs to be placed on the ground at a distance of approximately (0.5 * the diameter of the wind turbine rotor + the height of the wind turbine rotor) directly behind the nacelle of the wind turbine under test. However, with the increase in the size of wind turbines in recent years, the distance between the test point and the wind turbine generator set has also increased. To avoid excessively long connecting cables between the main data acquisition cabinet and the acoustic sensor, which could lead to distortion of the transmitted analog signal, existing noise testing of large wind turbine generator sets generally uses a separate outdoor power supply for the acoustic sensor and a separate wireless antenna, achieving data transmission and timing synchronization through wireless communication. However, the wireless solution has the following problems compared to the wired solution:
[0004] 1. Sound level meters are required by standards to be placed on the ground, which makes it difficult to locate them when the test site is grass or field; for wireless devices without cable guidance, the location can only be determined by visually finding the antenna position; when preparing to retrieve the equipment at night after testing, the antenna position is often difficult to confirm visually, making equipment retrieval difficult; 2. Wind turbine noise testing requires measuring data during strong winds, and existing antenna supports are easily blown over by the wind, resulting in signal loss; 3. Existing wireless equipment, power supply, network bridge, data acquisition and antenna are not integrated, resulting in numerous and messy cables during installation, and network cables are easily damaged during outdoor operations. Utility Model Content
[0005] To address the aforementioned issues, this application provides an improved noise signal acquisition device for wind power noise testing that can prevent antenna support from tipping over and facilitate nighttime device retrieval.
[0006] To achieve the above objectives, this utility model is realized through the following technical solution:
[0007] An improved noise signal acquisition device for wind power noise testing includes a sound level meter and a wireless device. The wireless device includes a cabinet placed flat on the ground, an antenna mast structure on the cabinet, an antenna support on the antenna mast structure, and a fixing structure on the antenna mast structure. The fixing structure includes a collar, which is fixed to the ground by inclined windproof ropes and ground stakes at the bottom of the windproof ropes. The ground stakes are symmetrically arranged around the perimeter of the equipment cabinet. The antenna support includes a connecting seat at the top of the antenna mast structure, with crossbars symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are detachably connected to the antenna. An LED light and a photosensitive switch are provided at the top gap of the connecting seat.
[0008] Preferably, the antenna mast structure includes a detachable lower antenna mast and an upper antenna mast, the lower antenna mast being connected to a fixed base mounted on the top surface of the equipment cabinet; and a collar being fixed to the upper antenna mast.
[0009] Preferably, the fixed base has a fixing thread that engages with the lower antenna mast; the top of the lower antenna mast has a connecting screw, which is threadedly connected to the upper antenna mast; and the bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast.
[0010] Preferably, the equipment cabinet contains a matching AP bridge, PoE module, remote communication and LED light power supply, data acquisition module, data acquisition module power supply, switch and external power input port, and sensor signal input port; the antenna interface of the AP bridge and the power interface of the remote communication and LED light power supply are exposed on the top surface of the equipment cabinet; the switch and external power input port and the sensor signal input port are exposed on the side of the equipment cabinet.
[0011] Preferably, the sampling port of the data acquisition module is connected to the sensor signal input port via a signal cable; the power supply of the data acquisition module is connected to the data acquisition module via a power cable; the power input port of the PoE module is connected to the remote communication and LED power supply, and the remote communication, LED power supply, and data acquisition module are connected to the switch and external power input port; the output terminal of the remote communication and LED power supply is connected to the external interface and PoE module located on the equipment cabinet; the network port of the data acquisition module is connected to the LAN port of the PoE module via a network cable; the Uplink port of the PoE module is connected to the AP bridge via a PoE network cable; the two BNC interfaces of the AP bridge are connected to the external interface.
[0012] Preferably, the detachable structure includes a sleeve at the end of the crossbar, the sleeve having a limiting screw hole, a limiting bolt inside the limiting screw hole, and the limiting bolt engaging with multiple limiting slots on the antenna.
[0013] Preferably, the collar is provided with a windproof ring that is connected to the windproof rope.
[0014] Preferably, the number of windproof ropes is three.
[0015] Preferably, the microphone head of the sound level meter is fitted with a windproof cover, and the sound level meter is horizontally fixed on a circular plate on the ground.
[0016] Preferably, there are two antennas, which are symmetrically arranged at both ends of the antenna support.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. This utility model integrates the equipment cabinet and antenna mast structure by installing an antenna mast structure on the equipment cabinet, making them a unified whole. This increases the overall weight of the antenna mast structure, improves its wind resistance, and increases its height, thereby ensuring the signal strength of the antenna on the mast structure. The utility model uses three windproof ropes with height-adjustable collars to further enhance the wind resistance of the antenna mast structure and reduce the possibility of it being blown over. A flashing red LED light is installed at the top of the antenna mast structure for easy observation of its status during nighttime testing. The flashing red LED light also indicates the location of the equipment at night, facilitating its retrieval during nighttime testing. The antenna mast structure of this utility model features a detachable design, facilitating disassembly and assembly while reducing the difficulty of transporting the antenna mast structure, effectively lowering the overall transportation complexity of the equipment.
[0019] 2. This utility model improves the integration of the device and reduces the complexity of outdoor wiring by integrating the network bridge and data acquisition unit into the equipment cabinet at the bottom of the antenna mast structure. This utility model also effectively improves the robustness of the antenna mast structure and ensures the long-term stability of the device by adding a collar for fixing the windproof rope to the antenna mast structure.
[0020] 3. This utility model uses the equipment cabinet as a base and adds windproof rope installation points, making the antenna mast structure less susceptible to being blown down by the wind. This reduces the probability of the antenna mast structure being blown down by strong winds at the wind farm during testing, improving the stability of antenna communication testing. After improving the stability of the antenna mast structure with three windproof ropes, the antenna mast structure can be further heightened, thereby further reducing the impact of terrain and vegetation on the antenna signal and improving the communication quality of the antenna. This utility model also adds a night-lighting LED light to the top of the antenna mast structure, facilitating the retrieval of the equipment when testing ends at night.
[0021] 4. This utility model integrates the data acquisition and wireless equipment in the original equipment into the equipment cabinet, which can greatly reduce the on-site equipment installation operations and reduce the impact and damage of equipment interfaces and network wiring on the on-site environment. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the antenna support structure;
[0024] Figure 3 This is a schematic diagram of the internal structure of the equipment cabinet;
[0025] Figure 4 This is a schematic diagram of the usage state of this utility model;
[0026] Figure 5 This is a top view of the guy rope.
[0027] In the diagram, 1 is the AP bridge; 2 is the PoE module; 3 is the antenna; 4 is the upper antenna mast; 5 is the collar; 6 is the mounting base; 7 is the antenna bracket; 8 is the photosensitive switch; 9 is the LED light; 10 is the remote communication and LED light power supply; 11 is the data acquisition module; 12 is the data acquisition module power supply; 13 is the sensor signal input port; 14 is the switch and external power input port; 15 is the equipment cabinet; 16 is the ground stake; 17 is the outdoor power supply; 18 is the circular flat panel; 19 is the windproof cover; 20 is the sound level meter; 21 is the windproof rope; and 22 is the lower antenna mast. Detailed Implementation
[0028] The present invention will be further described below through specific embodiments, but this does not limit the scope of the present invention.
[0029] Example 1
[0030] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1-5 As shown, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged around the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided in the gap at the top of the connecting seat.
[0031] The antenna mast structure includes a detachable lower antenna mast 22 and an upper antenna mast 4. The lower antenna mast 22 is connected to a fixed base 6 located on the top surface of the equipment cabinet 15. A collar 5 is fixed to the upper antenna mast 4. The fixed base 6 has a fixing thread that engages with the lower antenna mast 22. The top of the lower antenna mast 22 has a connecting screw, which is threadedly connected to the upper antenna mast 4. The bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast 4.
[0032] The equipment cabinet 15 contains a matching AP bridge 1, a PoE module 2, a remote communication and LED light power supply 10, a data acquisition module 11, a data acquisition module power supply 12, a switch and external power input port 14, and a sensor signal input port 13. The antenna interface of the AP bridge 1 and the power interface of the remote communication and LED light power supply 10 are exposed on the top surface of the equipment cabinet 15. The switch and external power input port 14 and the sensor signal input port 13 are exposed on the side of the equipment cabinet 15.
[0033] The sampling port of the data acquisition module 11 is connected to the sensor signal input port 13 via a signal line; the power supply 12 of the data acquisition module is connected to the data acquisition module 11 via a power line; the power input port of the POE module 2 is connected to the remote communication and LED power supply 10, and the remote communication and LED power supply 10 and the data acquisition module 11 are connected to the switch and the external power input port 14; the output end of the remote communication and LED power supply 10 is connected to the external interface and the POE module 2 set on the equipment cabinet 15; the network port of the data acquisition module 11 is connected to the LAN end of the POE module 2 via a network cable; the Uplink port of the POE module 2 is connected to the AP bridge 1 via a POE network cable; the two BNC interfaces of the AP bridge 1 are connected to the external interface.
[0034] The detachable structure includes a sleeve at the end of the crossbar, with a limiting screw hole on the sleeve containing a limiting bolt. The limiting bolt engages with multiple limiting slots on the antenna 3. A windproof ring 5 is provided on the collar 5, connected to three windproof ropes 21. A windproof cover 19 is fitted over the microphone head of the sound level meter 20, and the sound level meter 20 is horizontally fixed on a circular flat plate 18 on the ground. Two antennas 3 are symmetrically arranged at both ends of the antenna bracket 7.
[0035] In this utility model, the fixed base 6 on the top of the equipment cabinet 15 is used to fix the antenna mast structure. The antenna mast structure is assembled from three parts: the lower antenna mast 22, the upper antenna mast 4, and the antenna bracket 7. When the antenna mast structure is not in use, it can be disassembled for easy transportation. The lower antenna mast 22 is fixed in the fixed base 6 by a fixing thread, and the lower antenna mast 22 is detachably connected to the upper antenna mast 4 by a connecting screw.
[0036] The upper antenna mast 4 has a collar 5 with three windproof rings that are angled at 120 degrees to each other. After the antenna mast structure is installed in place and three ground nails 16 are fixed to the ground around the equipment cabinet 15, three windproof ropes 21 are locked onto the collar 5 and connected to the three ground nails 16 on the ground and taut to fix it in place and prevent the antenna mast structure from falling or swaying due to wind.
[0037] Antenna bracket 7 is installed on the top of upper antenna mast 4, and the horizontal bars with sleeves extending from both sides are used to fix the two antennas 3; the bottom interface of antenna 3 is connected to the outer interface of equipment cabinet 15, which is connected to the BNC interface of AP bridge 1, through BNC coaxial cable, for receiving data from AP bridge 1 and sending it out.
[0038] A photosensitive switch 8 and an LED light 9 are installed in the middle of the antenna bracket 7. One end of the photosensitive switch 8 is connected to the interface of the external device cabinet 15 and the remote communication and LED light power supply 10 output port through a power cord, and the other end is connected to the LED light 9 through a power cord, so that the photosensitive switch 8 can control the LED light 9. The photosensitive switch 8 is a low-brightness circuit and a high-brightness circuit is disconnected. The LED light 9 is a red flashing light to avoid confusion with the lights of surrounding houses and vehicles. The red LED can avoid attracting flying insects and affecting the test.
[0039] The sensor signal input 13 on the outside of the equipment cabinet 15 is connected to the bottom interface of the sound level meter 20 via a signal line for transmitting the collected analog signal; the probe of the sound level meter 20 is covered with a windproof cover 19 and is placed flat on a 1-meter diameter circular plate 18 for testing, and the raised part of the edge of the circular plate 18 needs to be filled in; the equipment cabinet 15 is connected to an outdoor power supply 17 for power supply.
[0040] The equipment cabinet 15 of this application contains a matching AP bridge 1, a PoE module 2, a remote communication and LED light power supply 10, a data acquisition module 11, a data acquisition module power supply 12, a switch and external power input port 14, and a sensor signal input port 13. The data acquisition module in the equipment cabinet 15 converts the externally acquired signals into digital signals and transmits the data to the PoE module 2 via a network cable, and then transmits it to the antenna 3 via the AP bridge 1. The antenna interface of the AP bridge 1 and the power interface of the remote communication and LED light power supply 10 are exposed on the top surface of the equipment cabinet and are used for outputting signals and powering the LED light 9. There is an external power input port 14 on the side of the equipment cabinet, and the sensor signal input port 13 is located outside the cabinet for connecting external power and signals.
[0041] The equipment in the equipment cabinet 15 of this application is fixed to the back panel of the equipment cabinet 15 with bolts. In the data acquisition section: the sampling port of the data acquisition module 11 is connected to the sensor signal input port 13 through a signal line; the power supply 12 of the data acquisition module is connected to the data acquisition module 11 through a power line to convert the external 220V voltage into 24V power supply.
[0042] The power input port on the same side of the LAN end of the POE module 2 is connected to the remote communication and LED power supply 10. The remote communication and LED power supply 10 and the data acquisition module 11 are connected to the switch and the external power input port 14 to power the equipment in the equipment cabinet 15. The output end of the remote communication and LED power supply 10 is connected to both the POE module 2 and the external interface to power the photosensitive switch 8 and the LED 9.
[0043] The network port of the data acquisition module 11 is connected to the LAN end of the POE module 2 via a network cable to transmit sensor data processed into digital signals; the Uplink port of the POE module 2 is connected to the AP bridge 1 via a POE network cable, and is used to power the AP bridge 1 and transmit data; the two BNC interfaces of the AP bridge 1 are connected to the external interface to connect the antenna 3 located on the bracket.
[0044] The equipment inside the equipment cabinet 15 has been assembled and fixed before being sent to the site, and no further testing or rewiring is required before use; all exposed interfaces on the equipment cabinet 15 are waterproof.
[0045] Example 2
[0046] An improved noise signal acquisition device for wind power noise testing differs from Embodiment 1 in that: the collar 5 includes a pair of semi-circular windproof rings connected to the upper antenna mast 4, and the semi-circular windproof rings are detachably connected by windproof bolts at both ends.
[0047] Example 3
[0048] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 , 2 As shown in Figures 4 and 5, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided at the top gap of the connecting seat.
[0049] The antenna mast structure includes a detachable lower antenna mast 22 and an upper antenna mast 4. The lower antenna mast 22 is connected to a fixed base 6 located on the top surface of the equipment cabinet 15. A collar 5 is fixed to the upper antenna mast 4. The fixed base 6 has a fixing thread that engages with the lower antenna mast 22. The top of the lower antenna mast 22 has a connecting screw, which is threadedly connected to the upper antenna mast 4. The bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast 4.
[0050] The detachable structure includes a sleeve at the end of the crossbar, with a limiting screw hole on the sleeve containing a limiting bolt. The limiting bolt engages with multiple limiting slots on the antenna 3. A windproof ring 5 is provided on the collar 5, connected to three windproof ropes 21. A windproof cover 19 is fitted over the microphone head of the sound level meter 20, and the sound level meter 20 is horizontally fixed on a circular flat plate 18 on the ground. Two antennas 3 are symmetrically arranged at both ends of the antenna bracket 7.
[0051] In this utility model, the fixed base 6 on the top of the equipment cabinet 15 is used to fix the antenna mast structure. The antenna mast structure is assembled from three parts: the lower antenna mast 22, the upper antenna mast 4, and the antenna bracket 7. When the antenna mast structure is not in use, it can be disassembled for easy transportation. The lower antenna mast 22 is fixed in the fixed base 6 by a fixing thread, and the lower antenna mast 22 is detachably connected to the upper antenna mast 4 by a connecting screw.
[0052] The upper antenna mast 4 has a collar 5 with three windproof rings that are angled at 120 degrees to each other. After the antenna mast structure is installed in place and three ground nails 16 are fixed to the ground around the equipment cabinet 15, three windproof ropes 21 are locked onto the collar 5 and connected to the three ground nails 16 on the ground and taut to fix it in place and prevent the antenna mast structure from falling or swaying due to wind.
[0053] Antenna bracket 7 is installed on top of the upper antenna mast 4, with sleeved crossbars extending from both sides to fix the two antennas 3. A photosensitive switch 8 and an LED light 9 are installed in the middle of antenna bracket 7; the LED light 9 is a red flashing light to avoid confusion with the lights of surrounding houses and vehicles, and the red LED can avoid attracting flying insects that may affect the test.
[0054] The probe of the sound level meter 20 is covered with a windproof cover 19 and placed flat on a 1-meter diameter circular plate 18 for testing. The protruding parts of the circular plate 18 need to be filled in. The equipment cabinet 15 is connected to an outdoor power supply 17 for power supply.
[0055] The equipment in the equipment cabinet 15 of this application is fixed to the back plate of the equipment cabinet 15 with bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before being sent to the site. The whole equipment does not need to be tested and rewired on site. All exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0056] Example 4
[0057] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 , 2 As shown in Figures 4 and 5, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided at the top gap of the connecting seat.
[0058] The equipment in the equipment cabinet 15 of this application is fixed to the back plate of the equipment cabinet 15 with bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before being sent to the site. The whole equipment does not need to be tested and rewired on site. All exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0059] During installation, the equipment cabinet 15 is placed flat on the ground, and the assembled antenna mast structure is fixed to the equipment cabinet 15. The antenna mast structure is secured using a fixing structure, and the collar 5 is fixed to the antenna mast structure. The collar 5 is pulled by the inclined and taut windproof rope 21 and the ground nail 16 to firmly support the antenna mast structure. The antenna bracket 7 is fixed to the top of the antenna mast structure through the connecting seat, and the antenna 3 is connected by the crossbars on both sides of the connecting seat to provide signal support for the equipment in the equipment cabinet. The LED light 9 is controlled by the light sensor switch 8 and can emit a red flashing light at night to facilitate the retrieval of equipment and the observation of equipment status.
[0060] Example 5
[0061] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 , 2As shown in Figures 4 and 5, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided at the top gap of the connecting seat.
[0062] The antenna mast structure includes a detachable lower antenna mast 22 and an upper antenna mast 4. The lower antenna mast 22 is connected to a fixed base 6 located on the top surface of the equipment cabinet 15. A collar 5 is fixed to the upper antenna mast 4. The fixed base 6 has a fixing thread that engages with the lower antenna mast 22. The top of the lower antenna mast 22 has a connecting screw, which is threadedly connected to the upper antenna mast 4. The bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast 4.
[0063] The detachable structure includes a sleeve at the end of the crossbar, with a limiting screw hole on the sleeve and a limiting bolt inside the limiting screw hole. The limiting bolt engages with multiple limiting slots on the antenna 3. A windproof ring is provided on the collar 5 for connection to the windproof rope 21.
[0064] In this utility model, the fixed base 6 on the top of the equipment cabinet 15 is used to fix the antenna mast structure. The antenna mast structure is assembled from three parts: the lower antenna mast 22, the upper antenna mast 4, and the antenna bracket 7. When the antenna mast structure is not in use, it can be disassembled for easy transportation. The lower antenna mast 22 is fixed in the fixed base 6 by a fixing thread, and the lower antenna mast 22 is detachably connected to the upper antenna mast 4 by a connecting screw.
[0065] The upper antenna mast 4 has a collar 5 with three windproof rings that are angled at 120 degrees to each other. After the antenna mast structure is installed in place and three ground nails 16 are fixed to the ground around the equipment cabinet 15, three windproof ropes 21 are locked onto the collar 5 and connected to the three ground nails 16 on the ground and taut to fix it in place and prevent the antenna mast structure from falling or swaying due to wind.
[0066] The antenna bracket 7 is installed on the top of the upper antenna mast 4, and the horizontal bars with sleeves extending from both sides are used to fix the two antennas 3; a photosensitive switch 8 and an LED light 9 are installed in the middle of the antenna bracket 7. The photosensitive switch 8 is used to control the LED light 9; the photosensitive switch 8 is a low-brightness circuit and a high-brightness circuit-free circuit; the LED light 9 is a red flashing light to avoid confusion with the lights of surrounding houses and vehicles, and the red LED can avoid attracting flying insects that may affect the test.
[0067] The equipment cabinet 15 is connected to the outdoor power supply 17 for power supply; the equipment in the equipment cabinet 15 is fixed to the back plate of the equipment cabinet 15 by bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before going to the site, and the overall use does not require testing and rewiring on site; all exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0068] Example 6
[0069] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 , 2 As shown in Figures 4 and 5, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided at the top gap of the connecting seat.
[0070] The antenna mast structure includes a detachable lower antenna mast 22 and an upper antenna mast 4. The lower antenna mast 22 is connected to a fixed base 6 located on the top surface of the equipment cabinet 15. A collar 5 is fixed to the upper antenna mast 4. The fixed base 6 has a fixing thread that engages with the lower antenna mast 22. The top of the lower antenna mast 22 has a connecting screw, which is threadedly connected to the upper antenna mast 4. The bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast 4.
[0071] In this utility model, the fixed base 6 on the top of the equipment cabinet 15 is used to fix the antenna mast structure. The antenna mast structure is assembled from three parts: the lower antenna mast 22, the upper antenna mast 4, and the antenna bracket 7. When the antenna mast structure is not in use, it can be disassembled for easy transportation. The lower antenna mast 22 is fixed in the fixed base 6 by a fixing thread, and the lower antenna mast 22 is detachably connected to the upper antenna mast 4 by a connecting screw.
[0072] The upper antenna mast 4 has a collar 5 with three windproof rings that are angled at 120 degrees to each other. After the antenna mast structure is installed in place and three ground nails 16 are fixed to the ground around the equipment cabinet 15, three windproof ropes 21 are locked onto the collar 5 and connected to the three ground nails 16 on the ground and taut to fix it in place and prevent the antenna mast structure from falling or swaying due to wind.
[0073] The antenna bracket 7 is installed on the top of the upper antenna mast 4, and the horizontal bars extending from both sides are used to fix the two antennas 3. A photosensitive switch 8 and an LED light 9 are installed in the middle of the antenna bracket 7. The photosensitive switch 8 is used to control the LED light 9. The photosensitive switch 8 is a low-brightness circuit and a high-brightness circuit-free circuit. The LED light 9 is a red flashing light to avoid confusion with the lights of surrounding houses and vehicles. The red LED can avoid attracting flying insects and affecting the test.
[0074] The equipment cabinet 15 is connected to the outdoor power supply 17 for power supply; the equipment in the equipment cabinet 15 is fixed to the back plate of the equipment cabinet 15 by bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before going to the site, and the overall use does not require testing and rewiring on site; all exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0075] Example 7
[0076] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 , 2 As shown in Figures 4 and 5, the device includes a sound level meter 20 and a wireless device. The wireless device includes a device cabinet 15 placed flat on the ground. The device cabinet 15 has an antenna mast structure, and the antenna mast structure has an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure. An LED light 9 and a light-sensitive switch 8 are provided at the top gap of the connecting seat.
[0077] The detachable structure includes a sleeve at the end of the crossbar, a limiting screw hole on the sleeve, a limiting bolt inside the limiting screw hole, and the limiting bolt cooperating with multiple limiting slots on the antenna 3.
[0078] In this utility model, the fixed base 6 on the top of the equipment cabinet 15 is used to fix the antenna mast structure. When the antenna mast structure is not in use, it can be disassembled for easy transportation. The antenna mast structure is fixed in the fixed base 6 by fixing threads.
[0079] The antenna mast structure has a collar 5, and the collar 5 has three windproof rings that are at a 120-degree angle to each other. After the antenna mast structure is installed in place and three ground nails 16 are fixed to the ground around the equipment cabinet 15, three windproof ropes 21 are locked onto the collar 5 and connected to the three ground nails 16 on the ground and taut to fix it and prevent the antenna mast structure from falling or swaying due to wind.
[0080] Antenna bracket 7 is installed on the top of the antenna mast structure. The crossbars with sleeves extending from both sides of antenna bracket 7 are used to fix the two antennas 3. A photosensitive switch 8 and an LED light 9 are installed in the middle of antenna bracket 7. The photosensitive switch 8 is used to control the LED light 9. The photosensitive switch 8 is a low-brightness circuit and a high-brightness circuit-free circuit. The LED light 9 is a red flashing light to avoid confusion with the lights of surrounding houses and vehicles. The red LED can avoid attracting flying insects and affecting the test.
[0081] The equipment cabinet 15 is connected to the outdoor power supply 17 for power supply; the equipment in the equipment cabinet 15 is fixed to the back plate of the equipment cabinet 15 by bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before going to the site, and the overall use does not require testing and rewiring on site; all exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0082] Example 8
[0083] An improved noise signal acquisition device for wind power noise testing, the structure of which is as follows: Figure 1 As shown, the device includes a wireless device, which includes a device cabinet 15 placed flat on the ground. The device cabinet 15 is equipped with an antenna mast structure, and the antenna mast structure is equipped with an antenna bracket 7. The antenna mast structure has a fixing structure, which includes a collar 5. The collar 5 is fixed to the ground by a windproof rope 21 set at an angle and a ground nail 16 at the bottom of the windproof rope 21. The ground nail 16 is symmetrically arranged on both sides of the device cabinet 15. The antenna bracket 7 includes a connecting seat set at the top of the antenna mast structure. Crossbars are symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna 3 through a detachable structure.
[0084] The antenna mast structure includes a detachable lower antenna mast 22 and an upper antenna mast 4. The lower antenna mast 22 is connected to a fixed base 6 located on the top surface of the equipment cabinet 15. A collar 5 is fixed to the upper antenna mast 4. The fixed base 6 has a fixing thread that engages with the lower antenna mast 22. The top of the lower antenna mast 22 has a connecting screw, which is threadedly connected to the upper antenna mast 4. The bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast 4.
[0085] The equipment in the equipment cabinet 15 of this application is fixed to the back plate of the equipment cabinet 15 with bolts. The equipment in the equipment cabinet 15 has been assembled and fixed before being sent to the site. The whole equipment does not need to be tested and rewired on site. All exposed interfaces on the equipment cabinet 15 are waterproof interfaces.
[0086] During installation, the equipment cabinet 15 is placed flat on the ground. The lower antenna mast 22 is fixedly connected to the upper antenna mast 4 via a connecting screw. The lower antenna mast 22 is also fixedly connected to the fixed base 6 via a fixing thread. The antenna bracket 7 is fixed to the top of the upper antenna mast 4 using the connecting holes on the connecting base. The antenna 3 is fixed using the crossbars on both sides of the connecting base to provide signal support for the equipment in the equipment cabinet. The assembled antenna mast structure is then fixed to the equipment cabinet 15. The antenna mast structure is fixed using the fixing structure. The collar 5 is fixed to the upper antenna mast 4. The collar 5 is fixed and supported by the inclined and taut windproof rope 21 and the ground nail 16.
[0087] The above description is only a preferred embodiment of the present utility model, but is not limited to the above examples. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An improved noise signal acquisition device for wind power noise testing, comprising a sound level meter and a wireless device, characterized in that, The wireless device includes a device cabinet placed flat on the ground, an antenna mast structure on the device cabinet, an antenna bracket on the antenna mast structure, and a fixing structure on the antenna mast structure. The fixing structure includes a collar, which is fixed to the ground by inclined windproof ropes and ground stakes at the bottom of the windproof ropes. The ground stakes are symmetrically arranged around the perimeter of the device cabinet. The antenna bracket includes a connecting seat at the top of the antenna mast structure, with crossbars symmetrically arranged on both sides of the connecting seat. The ends of the crossbars are connected to the antenna through a detachable structure. An LED light and a photosensitive switch are provided at the top gap of the connecting seat.
2. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The antenna mast structure includes a detachable lower antenna mast and an upper antenna mast. The lower antenna mast is connected to a fixed base set on the top surface of the equipment cabinet. The collar is fixed to the upper antenna mast.
3. The improved noise signal acquisition device for wind power noise testing according to claim 2, characterized in that, The fixed base has a fixed thread that meshes with the lower antenna mast; the top of the lower antenna mast has a connecting screw cylinder that is threadedly connected to the upper antenna mast; the bottom surface of the connecting base has a connecting hole that is threadedly connected to the upper antenna mast.
4. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The equipment cabinet contains a matching AP bridge, PoE module, remote communication and LED light power supply, data acquisition module, data acquisition module power supply, switch and external power input port, and sensor signal input port; the antenna interface of the AP bridge and the power interface of the remote communication and LED light power supply are exposed on the top surface of the equipment cabinet; the switch and external power input port and sensor signal input port are exposed on the side of the equipment cabinet.
5. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The detachable structure includes a sleeve at the end of the crossbar, a limiting screw hole on the sleeve, a limiting bolt inside the limiting screw hole, and the limiting bolt cooperating with multiple limiting slots on the antenna.
6. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The collar is equipped with a windproof ring that is connected to the windproof rope.
7. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The number of windproof ropes is three.
8. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The microphone head of the sound level meter is fitted with a windproof cover, and the sound level meter is horizontally fixed on a circular plate on the ground.
9. The improved noise signal acquisition device for wind power noise testing according to claim 1, characterized in that, The antenna consists of two antennas, which are symmetrically arranged at both ends of the antenna support.