Damage early warning device capable of automatically scanning, detecting and evaluating space complex electromagnetic radiation

Abstract

The invention discloses a damage early warning device capable of automatically scanning, detecting and evaluating space complex electromagnetic radiation. Through integration of a broadband antenna, a two-degree-of-freedom holder and a real-time safety evaluation alarm module, three core advantages of broadband domain high-precision measurement, dynamic scanning real-time evaluation and one-button portable operation are realized through hardware-software collaborative innovation, and national standard compliance detection requirements in complex electromagnetic environments such as 5G and Internet of Things are met.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic safety measurement equipment, and more specifically to a damage early warning device capable of automatically scanning, detecting, and assessing complex electromagnetic radiation in space. Background Technology

[0002] Currently, common electromagnetic safety measurement equipment mainly includes two types: field strength measurement and spectrum measurement.

[0003] (1) Field strength measurement: Field strength measurement is based on electric field strength meters. Currently, some field strength meters on the market have small bandwidth and lack security assessment based on SAR values. Moreover, different field strength meters vary greatly in sensitivity, size, and battery life, often requiring the selection of different field strength meters or replacement of field strength probes in different scenarios. There are also certain deficiencies in signal coverage for high-frequency bands. With the development of spectrum analyzers, the field strength measurement method is gradually being abandoned.

[0004] (2) Spectrum Measurement: Spectrum measurement is based on modified or extended spectrum analyzers and is currently the most studied method. Spectrum analyzers can better measure environments with multiple peak radiations and also have a wide frequency range. However, there are still significant differences in the implementation of measurement antennas. Some devices choose to use orthogonal dipole antennas. Orthogonal dipole antennas have good omnidirectionality and can recover the polarization direction of electromagnetic waves through algorithms, thereby obtaining the main maxima direction. However, there is still some coupling interference between orthogonal dipole antennas, and the measurement frequency range is limited, and the gain is low, resulting in poor signal performance when the background noise is high. Some devices choose to use a rotating pan-tilt unit combined with a directional antenna. However, the device is designed to only rotate horizontally and cannot be adjusted for pitch. This makes the device only usable in relatively open areas or high points, and it is difficult to achieve good polarization matching in environments with many buildings and reflective surfaces. At the same time, most current devices only perform electric field measurement work and lack safety assessments in accordance with national standards, making it difficult to make timely judgments in actual use sites, and lacking convenience and interactivity in use.

[0005] In complex electromagnetic environments, field strength meter-based measurement methods, which only measure a single frequency point, cannot effectively serve as a reference for assessing human electromagnetic safety. Field strength meter-based methods also require further upgrades to the antenna and the ability to match the direction of the maximum electromagnetic field to obtain more accurate measurement results. Summary of the Invention

[0006] The purpose of this invention is to address the three major pain points of existing electromagnetic safety measurement equipment: insufficient measurement accuracy, lack of real-time assessment capabilities, and complex operation in complex electromagnetic environments. This invention provides a damage early warning device capable of automatically scanning, detecting, and assessing complex electromagnetic radiation in space. By integrating a wideband antenna, a two-degree-of-freedom gimbal, and a real-time safety assessment and alarm module, this invention achieves three core advantages through hardware-software collaborative innovation: wideband high-precision measurement, dynamic scanning and real-time assessment, and one-button portable operation. This meets the national standard compliance testing requirements in complex electromagnetic environments such as 5G and the Internet of Things.

[0007] The technical solution of the present invention is: a damage early warning device that can automatically scan, detect and assess complex electromagnetic radiation in space, including a display screen, a main unit, and a pan-tilt unit with an antenna installed.

[0008] The main unit and the gimbal are connected and communicate via a signal control cable; the main unit and the antenna are connected and communicate via an RF coaxial cable.

[0009] The antenna is an omnidirectional antenna, covering the 0.1-40 GHz frequency band;

[0010] The gimbal has a built-in two-degree-of-freedom gimbal motion control system, which can achieve 360° horizontal and 90° pitch scanning with an angular resolution of ≤10°.

[0011] The main unit has a built-in 0-50 dB adjustable attenuator that dynamically adapts to a range of 1-500 V / m.

[0012] The main unit has a built-in real-time security assessment and alarm module, which uses a composite SAR value calculation model.

[0013] Between 1 Hz and 100 kHz, the following must be satisfied:

[0014]

[0015] In the formula: —Electric field strength at frequency i —Electric field strength limit at frequency i;

[0016] Between 0.1 MHz and 300 GHz, the following must be met:

[0017]

[0018] In the formula: —Electric field strength at frequency j —Limit of electric field strength at frequency j;

[0019] During measurement, the main unit controls the pan-tilt unit to complete a 360°×90° hemispherical rotation and records the electric field values ​​at different angles to determine the maximum point of the total electric field strength in the hemispherical space. Then, the root mean square measurement is performed for a continuous threshold time in the direction of the maximum value. When the directional measurement result exceeds the safety standard set in the real-time safety assessment alarm module, an audible and visual alarm is triggered, and the measurement result is automatically saved.

[0020] Furthermore, it also includes a tripod, on which the gimbal is detachably mounted.

[0021] Furthermore, the tripod is a folding hydraulic tripod with a quick-release plate, supporting quick assembly and disassembly in 3 seconds.

[0022] Furthermore, the threshold time is 5-7 minutes, preferably 6 minutes.

[0023] The beneficial effects of this invention are: it provides a damage early warning device capable of automatically scanning, detecting, and assessing complex electromagnetic radiation in space. This device performs measurements based on a spectrum measurement module, using a motor combined with a pan-tilt unit to control the antenna's rotation and elevation angles. The measurement results are analyzed in real time, providing electromagnetic safety references and generating an alarm when safety limits are exceeded. This device can perform wide-frequency, multi-angle measurements, better meeting the needs of complex electromagnetic environments with multiple frequencies and directions. The real-time safety assessment and alarm module allows for real-time analysis of the measurement results, comparing them with national electromagnetic safety standards, enabling users to quickly determine the electromagnetic safety status of the measurement point.

[0024] Improved accuracy: Antenna factor calibration and spectrum module collaboration reduce measurement error to less than 1 dB.

[0025] Efficiency Improvement: Dual-mode spherical scanning + directional measurement enables national standard compliance determination to be completed in 6 minutes.

[0026] Simplified operation: One-click operation on the touchscreen, even non-professionals can quickly get started.

[0027] In summary, this invention significantly improves the efficiency of safety monitoring in complex electromagnetic environments with its high-precision, real-time, and low-cost solution, offering both significant economic benefits and social value. Economically, it reduces maintenance costs associated with frequent equipment failures and repairs; furthermore, its convenience lowers personnel training costs and improves overall work efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a damage early warning device that can automatically scan, detect, and assess complex electromagnetic radiation in space.

[0029] In the diagram: 1: Display screen; 2: Main unit chassis; 3: Industrial control computer reserved interface; 4: Signal control cable (interconnection between the main unit chassis and the multi-degree-of-freedom gimbal motion control system); 5: Power switch; 6: RF coaxial cable (the antenna receives RF signals and transmits them to the main unit chassis); 7: Gimbal and antenna; 8: Tripod. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] like Figure 1 As shown, a damage early warning device capable of automatically scanning, detecting, and assessing complex electromagnetic radiation in space includes a display screen 1, a main unit 2, and a pan-tilt unit 7 equipped with an antenna.

[0032] The main unit 2 and the gimbal 7 are connected and communicate via a signal control cable 4. The main unit 2 and the antenna are connected and communicate via an RF coaxial cable 6.

[0033] The antenna is an omnidirectional antenna, covering the 0.1-40 GHz frequency band.

[0034] The gimbal 7 has a built-in two-degree-of-freedom gimbal motion control system, which can achieve 360° horizontal and 90° pitch scanning with an angular resolution of ≤10°.

[0035] The main unit 2 has a built-in 0-50 dB adjustable attenuator, which dynamically adapts to a range of 1-500 V / m.

[0036] The main unit 2 has a built-in real-time security assessment and alarm module, which uses a composite SAR value calculation model based on the national standard (GB 8702-2014).

[0037] Between 1 Hz and 100 kHz, the following must be satisfied:

[0038]

[0039] In the formula: —Electric field strength at frequency i — Limit of electric field strength at frequency i.

[0040] Between 0.1 MHz and 300 GHz, the following must be met:

[0041]

[0042] In the formula: —Electric field strength at frequency j — Limit of electric field strength at frequency j.

[0043] During measurement, the main unit 2 controls the pan-tilt unit 7 to complete a 360°×90° hemispherical rotation and records the electric field values ​​at different angles to determine the maximum point of the total electric field strength in the hemispherical space. Then, the root mean square measurement is performed for a continuous threshold time in the direction of the maximum value. When the directional measurement result exceeds the safety standard set in the real-time safety assessment alarm module, an audible and visual alarm is triggered, and the measurement result is automatically saved.

[0044] The folding hydraulic tripod (4 kg load capacity, 612 mm folded height) comes with a quick-release plate (1 / 4"-20 thread) for quick assembly and disassembly in 3 seconds.

[0045] Specific implementation process

[0046] 1. Hardware assembly

[0047] (1) Connect the omnidirectional antenna to the main unit via a 5 m flexible feeder.

[0048] (2) The main unit is connected to the antenna motion system via a cable.

[0049] 2. Software Configuration

[0050] (1) Turn on the host and set the scanning parameters: start frequency 0.1 GHz, end frequency 12 GHz, step angle 10°.

[0051] (2) Enable automatic SAR calculation function.

[0052] 3. On-site deployment

[0053] (1) Extend the tripod to a height of 1850 mm and level it using a spirit level.

[0054] (2) After starting the system, click the “Spherical Scan” button and the device will automatically complete the hemispherical measurement.

[0055] Example

[0056] Scenario: Compliance testing of electromagnetic radiation at a 5G base station.

[0057] step:

[0058] 1. Position the device 3 meters directly in front of the base station antenna.

[0059] 2. After starting the scan, the system completes a 360°×90° hemispherical measurement and locates the direction of the maximum field strength (azimuth 215°, elevation 35°).

[0060] 3. Directional measurement results show that the field strength at the 3.5 GHz frequency point is 12.3 V / m, and the composite SAR value is 0.87 (limit 1.0), which is considered safe.

[0061] 4. Export the data report, including the frequency-field strength distribution map and compliance conclusions.

[0062] Verification: Compared with the standard field strength meter of the National Institute of Metrology, the measurement error of this equipment is ≤0.8 dB, which meets the requirements of GJB 5313A-2017.

[0063] This invention addresses the three major pain points of traditional measurement equipment in the complex electromagnetic environment of the 5G / IoT era: insufficient accuracy (±3 dB), lack of real-time evaluation, and cumbersome operation (20 minutes per point). It proposes a spectrum electric field measurement integrated machine technical solution: by coordinating a 0.1-12 GHz omnidirectional antenna with a ±1 dB high-precision spectrum module, combined with a two-degree-of-freedom gimbal (scanning resolution ≤10°) and real-time SAR calculation software, it can automatically complete hemispherical scanning, main maximum direction positioning, and national security standard (GB 8702-2014) compliance determination within 6 minutes.

[0064] Technical Results: Actual measurements show that the equipment's electric field measurement range is 1-500 V / m, frequency response is less than 1 dB, and frequency error is less than 10. -2 The measurement accuracy is high. The analysis system automatically and quickly performs data analysis and compares it with national safety limits, providing real-time references and issuing alarms when safety limits are exceeded.

[0065] In summary, this invention significantly improves the efficiency of safety monitoring in complex electromagnetic environments with its high-precision, real-time, and low-cost solution, offering both significant economic benefits and social value. Economically, it reduces maintenance costs associated with frequent equipment failures and repairs; furthermore, its convenience lowers personnel training costs and improves overall work efficiency.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A damage early warning device capable of automatically scanning, detecting, and assessing complex electromagnetic radiation in space, characterized in that: Includes a display screen (1), a main unit (2), and a gimbal (7) with an antenna installed. The main unit (2) and the gimbal (7) are connected and communicate via a signal control cable (4); the main unit (2) and the antenna are connected and communicate via a radio frequency coaxial cable (6). The antenna is an omnidirectional antenna, covering the 0.1-40 GHz frequency band; The gimbal (7) has a built-in two-degree-of-freedom gimbal motion control system, which can achieve 360° horizontal and 90° pitch scanning; The main unit (2) has a built-in 0-50 dB adjustable attenuator; The main unit (2) has a built-in real-time security assessment and alarm module, which uses a composite SAR value calculation model: Between 1 Hz and 100 kHz, the following must be satisfied: In the formula: —Electric field strength at frequency i, —Electric field strength limit at frequency i; Between 0.1 MHz and 300 GHz, the following must be met: In the formula: —Electric field strength at frequency j —Limit of electric field strength at frequency j; During the measurement, the main unit (2) controls the gimbal (7) to complete the 360°×90° hemispherical rotation and records the electric field value at different angles. The maximum point of the total field strength in the hemispherical space is determined, and then the root mean square measurement of the continuous threshold time is performed in the direction of the maximum value. When the directional measurement result exceeds the safety standard set in the real-time safety assessment alarm module, an audible and visual alarm is triggered, and the measurement result is automatically saved.

2. The damage early warning device for automatically scanning, detecting, and assessing complex electromagnetic radiation in space according to claim 1, characterized in that: It also includes a tripod (9), on which the gimbal (7) is detachably mounted.

3. The damage early warning device for automatically scanning, detecting, and assessing complex electromagnetic radiation in space according to claim 2, characterized in that: The tripod (9) is a folding hydraulic tripod with a quick-release plate, which supports quick assembly and disassembly in 3 seconds.

4. The damage early warning device for automatically scanning, detecting, and assessing complex electromagnetic radiation in space according to claim 1, characterized in that: The angle resolution of the gimbal (7) is ≤10°.

5. A damage early warning device for automatically scanning, detecting, and assessing complex electromagnetic radiation in space, as described in claim 1, characterized in that: The adjustable attenuator dynamically adapts to a range of 1-500 V / m.

6. A damage early warning device for automatically scanning, detecting, and assessing complex electromagnetic radiation in space, as described in claim 1, characterized in that: The threshold time is 5-7 minutes.

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