Multifunctional police law enforcement recorder

Abstract

The invention discloses a multifunctional police law enforcement recorder, which relates to the technical field of recorder wireless communication networks and comprises an audio and video recording module, a light emitting module, a microphone module, a display module, a battery module, a wireless communication module and a wireless communication processing module. The system has the advantages that the transmission power of wireless signals can be adjusted in real time according to factors such as actual signal strength, transmission distance and environmental interference, and then the problem of signal attenuation caused by environmental factors can be effectively compensated, so that the signal strength is improved, stable signal transmission of the law enforcement recorder in a complex and dynamic environment is ensured, and the service life of the law enforcement recorder is prolonged. The recorder can dynamically adjust the data transmission rate according to factors such as actual signal strength and bandwidth utilization conditions, the system can improve the transmission rate when the signal quality is good, and the system can automatically reduce the transmission rate when the signal quality is weak, so that resource waste caused by too large bandwidth or data loss caused by too low bandwidth is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wireless communication networks for recorders, in particular to a multifunctional police law enforcement recorder. Background Art

[0002] Police law enforcement recorders not only have the function of recording video and audio, but also can transmit data from the law enforcement scene in real time, greatly improving the transparency of law enforcement and enhancing the ability to preserve evidence of illegal acts.

[0003] The existing multifunctional police law enforcement recorders may face wireless communication-related problems in daily use, especially in a changing wireless signal environment and complex geographical conditions. How to ensure the real-time, stable and efficient transmission of video and audio data has become an important challenge facing the system. Existing police law enforcement recorders may rely on traditional wireless communication technology and static signal transmission systems when conducting wireless communication of data. However, in actual applications, factors such as building obstruction, signal interference and environmental changes may cause signal attenuation, reduced transmission speed and data loss, which may affect the stability and timeliness of data transmission. In addition, the existing technology may have poor adaptability to environmental changes and signal interference, and may not be able to effectively adjust system parameters to optimize the quality of wireless communication, thereby affecting law enforcement efficiency and the reliability of evidence collection. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional police law enforcement recorder to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional police law enforcement recorder, comprising a recording and video recording module, a light emitting module, a microphone module, a display module, a battery module, a wireless communication module and a wireless communication processing module; The audio and video data of the scene are collected through the recording and video recording module, and then the data is transmitted to the control center through the wireless communication module. The battery module provides power support for each module, and the light-emitting module provides lighting and warning functions. Then, the microphone module is used to improve the communication intercom function, and the wireless communication processing module is used to adjust the data communication; The wireless communication processing module includes: a data acquisition module, a data processing module, a calculation and analysis module and an adjustment module.

[0006] Optionally, the wireless communication processing module is specifically: Data collection module: The data collection module is used to obtain the data intensity information, the location information of the law enforcement recorder, and the current weather information of the outside world; Data processing module: input the data strength information, the location information of the law enforcement recorder, and the current weather information of the outside world into the data processing module, and the data processing module cleans and normalizes the input data. The data processing module outputs the initial transmission signal strength value, the current transmission distance value, and the atmospheric influence factor; Calculation and analysis module: the initial transmission signal strength value, the current transmission distance value and the atmospheric influence factor are input into the calculation and analysis module, and the calculation and analysis module outputs the signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value; Adjustment module: The signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value are input into the adjustment module, and the adjustment module adjusts the data transmission of the wireless communication module based on the input data.

[0007] Optionally, the calculation and analysis module includes: a signal strength submodule, a data transmission submodule and a signal quality submodule.

[0008] Optionally, the calculation formula of the signal strength submodule is as follows: ; in: PEQ refers to the signal strength adjustment value, PEQA refers to the initial transmission signal strength value, PEQB refers to the distance reference value, PEQC refers to the current transmission distance value, PEQD refers to the environmental impact factor, PEQE refers to the atmospheric impact factor, PEQF refers to the signal attenuation value under standard atmospheric conditions, PA refers to the impact weight factor of the distance, PB refers to the impact weight factor of the environment, and PC refers to the impact weight factor of the atmospheric factor; The reference reflects the degree of signal propagation attenuation; Refers to the effect of the environment on signal strength; Refers to the correction used to correct the effects of atmospheric conditions on signal propagation; The processing process of the signal strength submodule is as follows: the initial transmission signal strength value PEQA, the current transmission distance value PEQC and the atmospheric influence factor PEQE are input into the signal strength submodule, and the signal strength submodule outputs the signal strength adjustment value PEQ.

[0009] Optionally, the calculation formula of the data transmission submodule is as follows: ; in: RAD refers to the data transmission rate adjustment value, RADA refers to the maximum theoretical transmission rate of the system, RADE refers to the load of encryption calculation, RADB refers to the maximum encryption calculation load, RADC refers to the environmental interference factor, RADD refers to the maximum environmental interference value, RA refers to the weight factor of RADA, RB refers to the weight factor of the signal strength influencing factor, RC refers to the weight factor of the encryption influencing factor, and RD refers to the weight factor of the environmental interference factor; Refers to the strength of the current signal relative to the initial transmitted signal; Refers to the effect of encryption operations on data transmission rate; Refers to correcting the effect of environmental interference on the transmission rate; The processing process of the data transmission submodule is as follows: the signal strength adjustment value PEQ and the initial transmission signal strength value PEQA are input into the data transmission submodule, and the data transmission submodule outputs the data transmission rate adjustment value RAD.

[0010] Optionally, the calculation formula of the signal quality submodule is as follows: ; in: QKL refers to the signal quality analysis value, QKLA refers to the background noise intensity in the signal, QKLB refers to the total interference power, QA refers to the weight factor of the noise interference effect, and QC refers to the weight coefficient of environmental interference; Refers to the ratio between signal strength and transmission rate and noise and interference; Refers to correcting the impact of environmental interference on signal quality; The processing process of the signal quality submodule is as follows: the signal strength adjustment value PEQ, the data transmission rate adjustment value RAD, the environmental interference factor RADC and the environmental maximum interference value RADD are input into the signal quality submodule, and the signal quality submodule outputs a signal quality analysis value QKL.

[0011] Optionally, the adjustment module adjusts the transmission power of the law enforcement recorder based on the signal strength adjustment value to maintain sufficient signal strength.

[0012] Optionally, the adjustment module adjusts the data transmission rate based on the data transmission rate to ensure that the audio and video data can be stably uploaded to the control center.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention outputs a signal strength adjustment value through a signal strength submodule. This signal strength submodule adjusts the wireless signal strength based on dynamic factors such as transmission distance, environmental interference and atmospheric factors. In the use scenario of the law enforcement recorder, the device may encounter different environmental interferences, such as buildings, terrain and weather changes, which may cause signal attenuation. The signal strength is adjusted by this submodule to ensure the stability of wireless communication. This submodule enables the police law enforcement recorder system to still ensure good signal quality in complex urban environments, closed indoor environments and bad weather. It can stably transmit video and audio data in different environments to ensure real-time data upload and smooth communication. The signal strength is adjusted in real time according to actual environmental factors such as weather, obstacles and interference to ensure the stability of signal transmission. In complex environments such as cities and mountainous areas, the signal will be affected by many aspects. This submodule can dynamically adjust the signal power to ensure the quality of information transmission.

[0014] 2. The data transmission submodule of the present invention outputs a data transmission rate adjustment value. This submodule can dynamically adjust the transmission rate according to the actual signal strength, encryption load and environmental interference, and takes into account the impact of encryption and environmental interference on the bandwidth. In the police law enforcement recorder system, the bandwidth requirements for the transmission of real-time video streams and audio data and other data uploads are very high. The police law enforcement recorder needs to efficiently transmit high-definition video and audio data on site, which puts forward high requirements on bandwidth and transmission rate. This submodule can dynamically adjust the system bandwidth allocation to avoid data transmission delays or freezes caused by signal attenuation or encryption calculations, ensure that the recorder can upload video and audio data in real time, and appropriately reduce the data transmission rate when the signal strength is insufficient or the interference is large, thereby ensuring stable data transmission.

[0015] 3. The present invention outputs a signal quality analysis value through a signal quality submodule. Based on the signal quality analysis value, the system can determine the health of the wireless communication link. For example, if the signal quality is poor, the system can decide to reduce the transmission rate or trigger other optimization mechanisms, such as adjusting the transmission power and increasing error correction to improve communication stability. Based on real-time monitoring changes, the system can detect potential communication problems. In the police law enforcement recorder system, quality fluctuations are prone to occur under the influence of multiple interferences. This submodule can optimize the signal quality, which can, to a certain extent, enable the device to reliably transmit video data and audio data when the signal is damaged. By comprehensively considering environmental interference factors, the communication capability of the device in an environment with large interference can be enhanced to ensure the stability of data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Axonometric view of the structure of this multifunctional police law enforcement recorder Figure 1 ; Figure 2Axonometric view of the structure of this multifunctional police law enforcement recorder Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the multifunctional police law enforcement recorder; Figure 4 This is a schematic diagram of the structure of the wireless communication processing module of the multifunctional police law enforcement recorder; Figure 5 This is a schematic diagram of the structure of the calculation and analysis module of the multifunctional police law enforcement recorder; Figure 6 This is a step flow chart of the wireless communication processing module of this multifunctional police law enforcement recorder. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Regarding the wireless communication processing module system of this multifunctional police law enforcement recorder, it is different from the existing multifunctional police law enforcement recorders. The existing police law enforcement recorders may often encounter problems such as signal attenuation, multipath propagation and interference of wireless signals in complex environments. Therefore, the signal transmission is unstable when the law enforcement recorder transmits data, and the quality of video data is reduced. In addition, due to signal attenuation, weather changes, terrain obstruction and other factors, the existing police law enforcement recorders may not be able to automatically optimize the signal strength and data transmission rate according to environmental changes, resulting in unstable communication quality and unable to meet high-bandwidth requirements such as real-time data transmission and high-definition video live broadcast, and the existing police law enforcement recorders.

[0019] This multifunctional police law enforcement recorder can adjust the transmission power of the wireless signal in real time according to factors such as actual signal strength, transmission distance, and environmental interference, and can effectively compensate for the signal attenuation problem caused by environmental factors, thereby improving signal strength and ensuring that the law enforcement recorder can maintain stable signal transmission in complex and dynamic environments. This recorder can dynamically adjust the data transmission rate according to factors such as actual signal strength and bandwidth utilization. When the signal quality is good, the system can increase the transmission rate. When the signal is weak, the system automatically reduces the transmission rate to avoid resource waste due to excessive bandwidth or data loss due to low bandwidth. It can also correct the signal quality according to factors such as environmental noise and interference sources. This enables the system to effectively cope with multiple signal interferences in complex environments, ensure signal quality, and prevent signal distortion and data packet loss.

[0020] Example 1: Please refer to Figures 1 to 6 This embodiment provides a multifunctional police law enforcement recorder, including a recording and video recording module 1, a light emitting module 2, a microphone module 3, a display module 4, a battery module, a wireless communication module and a wireless communication processing module.

[0021] The audio and video data of the scene are collected through the recording and video recording module 1, and then the data is transmitted to the control center through the wireless communication module. The battery module provides power support for each module, and the light-emitting module 2 provides lighting and warning functions. Then, the microphone module 3 improves the communication intercom function, and the wireless communication processing module adjusts the data communication.

[0022] The wireless communication processing module includes: Data collection module: The data collection module is used to obtain data intensity information, location information of law enforcement recorders, and current weather information outside.

[0023] Data processing module: The data intensity information, the location information of the law enforcement recorder, and the current weather information of the outside world are input into the data processing module. The data processing module cleans and normalizes the input data. The data processing module outputs the initial transmission signal intensity value, the current transmission distance value, and the atmospheric impact factor.

[0024] Calculation and analysis module: The initial transmission signal strength value, the current transmission distance value and the atmospheric influence factor are input into the calculation and analysis module, and the calculation and analysis module outputs the signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value.

[0025] The calculation and analysis module includes a signal strength submodule, a data transmission submodule and a signal quality submodule; Adjustment module: The signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value are input into the adjustment module, and the adjustment module adjusts the data transmission of the wireless communication module based on the input data.

[0026] In this embodiment, through the signal strength submodule, the police law enforcement recorder can adjust the signal strength in real time according to environmental changes, thereby ensuring the stability of the signal. Taking into account the data transmission submodule and the signal quality submodule during transmission, the system can effectively optimize bandwidth allocation, anti-interference ability and data transmission rate, thereby improving the stability and efficiency of wireless communication. The three groups of submodules are combined together. The system maintains efficient and reliable data transmission in various environments, such as crowded urban environments, severe weather conditions, etc., especially in the scenario of real-time video and audio transmission, avoiding transmission delays and packet loss caused by signal attenuation or interference. By dynamically adjusting the signal strength, transmission rate and interference correction, the system can flexibly adapt to different environmental conditions, which not only improves the transmission efficiency, but also effectively reduces bandwidth waste and system burden, thereby extending the use time of the equipment. The combination of these submodules provides an intelligent communication model for the police law enforcement recorder, which can not only automatically adjust according to environmental conditions, but also effectively deal with multipath propagation and interference, enhancing the intelligence and adaptability of the system, which is rare in traditional wireless communication equipment.

[0027] See also Figures 1 to 6 , the processing process of the signal strength submodule is as follows: ; in: PEQ stands for Signal Strength Adjustment.

[0028] PEQA refers to the initial transmitted signal strength value. The initially emitted signal power represents the power emitted by the signal source.

[0029] PEQB refers to the distance reference value, the reference distance for signal measurement, usually set to 1 meter to standardize the calculation of signal strength. The artificially set standard value is usually 1 meter, which is the standard distance for signal attenuation. It is a fixed standard value used to determine the intensity change of radio signals at different distances. The reference distance is usually selected as 1 meter or other suitable distances.

[0030] PEQC refers to the current transmission distance value, the actual propagation distance between the transmitting device and the receiving device, which is measured in real time by the positioning system.

[0031] PEQD refers to environmental impact factor, which reflects the impact of environmental factors such as buildings, electromagnetic interference and weather on signal attenuation. The value range is 0 to 1. Generally, the more severe the environmental interference, the larger the PEQD value. Through on-site testing, using an independent electromagnetic interference analyzer or environmental monitoring equipment to test in different environments, the environmental interference level of the area can be obtained. This can be input into the system model in this recorder as a static parameter. It can also be obtained through the preset environmental model. In a specific area or specific usage scenario, the empirical value of the environmental impact factor can be obtained through experiments or literature, and then dynamically adjusted according to environmental changes. The position of the recorder when it is used can also be located based on real-time positioning, and the building factors, environmental conditions, electromagnetic interference and weather in the target area can be evaluated in combination with large models and big data to obtain the environmental impact factor.

[0032] PEQE stands for atmospheric influence factor, which reflects the effect of atmospheric conditions, such as temperature and air pressure, on signal attenuation. The temperature and air pressure of the air are measured by a weather station or an atmospheric sensor, and then the system in this recorder receives the temperature and air pressure information on the Internet through intelligent information transmission based on the Internet, and then calculates this factor.

[0033] PEQE=PS×(T / T0)×(P / P0).

[0034] Where: T and P refer to the current temperature and current air pressure respectively, T0 and P0 refer to the standard temperature and standard air pressure respectively.

[0035] PEQF refers to the signal attenuation value under standard atmospheric conditions. Under standard atmospheric conditions, such as normal temperature and pressure, the signal attenuation value is used as a comparison benchmark. It is calculated by measuring the temperature and air pressure in the environment through a weather station or an atmospheric sensor. Usually, there is a standard value in the literature, and the value range is set to 2; PA refers to the influence weight factor of distance, PB refers to the influence weight factor of environment, and PC refers to the influence weight factor of atmospheric factors.

[0036] The ratio reflects the degree of signal propagation attenuation. This ratio reflects the propagation characteristics of the signal, especially the energy loss when the signal is transmitted at different distances. This formula helps to predict signal strength and attenuation. According to wireless communication theory, the signal attenuates as the propagation distance increases. The increase in distance will lead to a decrease in signal strength. Assuming that the wireless signal of the law enforcement recorder is transmitted through a public environment, this ratio reflects the change in the received signal strength. For example, the distance between the recorder and the base station is PEQC, and the distance reference value PEQB=1 meter is the set standard. The signal strength will attenuate according to this ratio.

[0037] Refers to the impact of the environment on signal strength. Usually, the signal is attenuated due to external factors. The larger the value, the stronger the environmental impact. This factor is added to the formula to correct the impact of the environment on signal strength. For example, during law enforcement, law enforcement recorders may operate in areas with strong signal shielding, such as inside buildings or underground parking lots, resulting in increased signal attenuation. At this time, PEQD will have a larger value, thereby further weakening the signal strength.

[0038] Refers to the correction used to correct the impact of atmospheric conditions on signal propagation. The additive correction shows that the impact of the atmosphere is cumulative, that is, if the atmospheric conditions are poor, such as high temperature or large changes in air pressure, the signal attenuation will be more significant. If the law enforcement recorder works in bad weather, the signal will be subject to additional attenuation by the atmosphere. At this time, the PEQE value will increase, thereby reducing the final calculated signal strength.

[0039] The processing of the signal strength submodule is as follows: The initial transmission signal strength value PEQA, the current transmission distance value PEQC and the atmospheric influence factor PEQE are input into the signal strength submodule, and the signal strength submodule outputs the signal strength adjustment value PEQ.

[0040] In this embodiment, this submodule can optimize the stability and quality of wireless communication based on the environment. Especially when the law enforcement recorder is moving, it can adjust the wireless signal parameters based on environmental changes to ensure stable data transmission. When the police law enforcement recorder is moving, the device will automatically adjust the signal transmission power according to the different environments to ensure the stability of data transmission.

[0041] For example, when the device enters an underground parking lot, the system automatically enhances the signal to overcome the attenuation of walls and obstacles. Based on the calculation results, the system can optimize the signal quality by changing the transmission power. For example, in underground parking lots or high-rise building dense areas, the system will automatically reduce power consumption to avoid excessive signal transmission, and increase power in open environments to ensure stable communication. The specific adjustment method may be to adjust the output power of the wireless communication module through the system. If the transmission power is always set to the maximum value, the battery consumption of the police law enforcement recorder will increase significantly, especially when used for a long time, which may cause the battery to run out quickly and unable to work continuously. Excessive transmission power will not only interfere with other devices, but also cause the system itself to be in a wireless communication "congested" state.

[0042] For example, interference between different devices on the same frequency band will increase, which may lead to unstable connection or degraded communication quality. In environments with strong signals, such as near signal towers or open areas, excessive transmission power is actually a waste and may cause over-saturation of the signal, which will affect the reception effect. Only by optimizing these parameters according to the environment and communication conditions can the system maximize stability and reliability without wasting resources.

[0043] This module adjusts the wireless signal strength based on dynamic factors such as transmission distance, environmental interference, and atmospheric factors. In the use scenarios of law enforcement recorders, the device may encounter different environmental interferences, such as buildings, terrain, weather changes, etc., resulting in signal attenuation. Therefore, the signal strength is adjusted through this formula to ensure the stability of wireless communication. This model can enable the police law enforcement recorder system to still ensure good signal quality in complex urban environments, closed indoor environments or bad weather, and help to stably transmit video and audio data in different environments, ensuring real-time data upload or smooth communication. It can adjust the signal strength in real time according to actual environmental factors such as weather, obstacles and interference to ensure the stability of signal transmission. In complex environments such as cities and mountainous areas, the signal will be affected by many aspects. This formula can dynamically adjust the signal power to ensure the quality of information transmission.

[0044] See also Figures 1 to 6 , the processing process of the data transmission submodule is as follows: ; in: RAD stands for Rate Adjustment Value.

[0045] RADA refers to the maximum theoretical transfer rate of the system, the maximum theoretical data transfer rate that a device can achieve, and is usually related to hardware performance.

[0046] RADE refers to the load of encryption calculations, which indicates the impact of encryption or decryption operations on data transmission rate. The stronger the encryption, the greater the load. It is obtained by measuring the processing time of encryption calculations or the computing power of encryption devices.

[0047] RADE=OA / OU.

[0048] Among them: OA refers to the processing time of the encryption algorithm, and OU refers to the amount of encrypted data.

[0049] RADB refers to the maximum encryption calculation load, the maximum encryption load that the system can handle, and indicates the encryption capability of the device.

[0050] RADC refers to environmental interference factor, which indicates the intensity of interference in the environment, such as electromagnetic interference, signals from other equipment, etc. The noise level in the environment is measured by an electromagnetic interference analyzer or a radio spectrum analyzer. The acquisition of this parameter may require external test data to be input, or the location of the recorder is sensed based on GPS positioning. The noise and other interference factors in the environment are judged comprehensively based on time information and weather information. For example, if the location information is a vegetable market and the time information is morning, the noise factor in the vegetable market will definitely be more serious. Then, the location information, time information, weather information and other factors can be used to achieve the purpose of evaluating and judging the value. The value range is 0-1.

[0051] RADD refers to the maximum environmental interference value, the maximum interference intensity in the environment, which is usually set to 1 as the maximum value. The set standard value is used as the basis for standardizing the interference factor.

[0052] RA refers to the weight factor of RADA, RB refers to the weight factor of signal strength influencing factor, RC refers to the weight factor of encryption influencing factor, and RD refers to the weight factor of environmental interference factor.

[0053] Refers to the strength relationship between the current signal strength and the initial transmitted signal. This ratio reflects the ratio of the adjusted signal strength to the initial signal strength. The greater the signal strength, the higher the data transmission rate. The signal strength is proportional to the transmission rate. The stronger the signal, the lower the bit error rate and the more stable the data transmission. Assuming that the law enforcement recorder works in different environments, the signal strength may change. If the signal strength adjustment value PEQ is low, for example, between urban buildings or underground parking lots, the data transmission rate will decrease. After adjusting this ratio, the data transmission rate can be adjusted more accurately.

[0054] Refers to the impact of encryption operations on data transmission rate. The greater the encryption calculation load, the greater the impact on the data transmission rate. Therefore, the additive form is used to indicate that the impact of the encryption load on the data rate is increasing. If the encryption processing has a large amount of calculation, the actual transmission rate of the system will decrease. The additive form reasonably reflects the linear impact of the increase in encryption load on the rate. The law enforcement recorder may encrypt the stored data when transmitting data, which increases the processing time and calculation load. For example, if the law enforcement recorder works in a high-risk environment, advanced encryption methods may be enabled, which will increase the calculation load of the transmission and reduce the data transmission rate accordingly.

[0055] It refers to the correction of the impact of environmental interference on the transmission rate. The stronger the interference, the greater the impact on the data transmission rate. The subtraction method reflects the inhibitory effect of environmental interference on the rate. The stronger the interference, the lower the signal quality and rate. The subtraction form shows that interference will inhibit the increase in rate. When the law enforcement recorder is transmitting important data, if there are a large number of electronic devices or radio interference around it, the interference strength RADC will increase, resulting in a significant suppression of the data transmission rate. This factor can be used to correct the impact of interference on the data rate.

[0056] The processing process of the data transmission submodule is as follows: the signal strength adjustment value PEQ and the initial transmission signal strength value PEQA are input into the data transmission submodule, and the data transmission submodule outputs the data transmission rate adjustment value RAD.

[0057] In this embodiment, in wireless communication, signal strength directly affects the data transmission rate. By optimizing the transmission rate, it is ensured that data can be transmitted at an appropriate speed even in an environment with unstable signals, reducing delays and jamming. In an environment with strong signal strength, such as open areas in cities or near signal towers, the data transmission rate can be increased to ensure real-time transmission of high-definition video, voice and positioning data. In an environment with weak signals, such as underground or in buildings, the system automatically reduces the data transmission rate to ensure a stable connection without overload. In an environment with poor signal quality, such as underground or in buildings, the system cannot maintain efficient transmission even if the maximum transmission rate is set, which not only wastes bandwidth, but may also cause a large amount of data to be lost or require retransmission, increase delay, and when the transmission rate is too high, especially in an unstable signal environment, it will cause problems such as data packet loss and retransmission, increase delay, and reduce real-time performance. Therefore, these parameters are optimized according to the environment and communication conditions to maximize the stability and reliability of the system without wasting resources.

[0058] This module dynamically adjusts the transmission rate according to the actual signal strength, encryption load, environmental interference, and takes into account the impact of encryption and environmental interference on bandwidth. In the system of police law enforcement recorders, the bandwidth requirements for real-time video stream transmission, audio data transmission, and other data upload are very high. Police law enforcement recorders often need to efficiently transmit high-definition video and audio data on site, which puts high demands on bandwidth and transmission rate. This formula can dynamically adjust the system bandwidth allocation to avoid data transmission delays or freezes caused by signal attenuation or encryption calculations, ensuring that the recorder can upload video and audio data in real time. In the case of insufficient signal strength or large interference, the data transmission rate can be appropriately reduced to ensure stable data transmission.

[0059] See also Figures 1 to 6 , the processing process of the signal quality submodule is as follows: ; in: QKL refers to the signal quality analysis value, QKLA refers to the background noise intensity in the signal, and the value range is 0-1; QKLB refers to the total interference power, and the value range is 0-1; QA refers to the weight factor of noise interference influence, and QC refers to the weight coefficient of environmental interference.

[0060] Refers to the ratio of signal strength and transmission rate to noise and interference. Signal quality in wireless communications is usually closely related to the relationship between signal strength, noise and interference. The better the signal quality, the higher the signal strength and transmission rate, and the lower the noise and interference. Therefore, the signal quality is calculated by multiplying the signal strength adjustment value PEQ and the data transmission rate adjustment value RAD to represent the overall effectiveness of the signal, and QKLA+QKLB is used to represent the inhibitory effect of interference and noise on signal quality. During the law enforcement process, the signal strength and transmission rate between the law enforcement recorder and the base station will be affected by noise and interference. When the law enforcement recorder is in a high interference environment, the increase in QKLB causes the QKL value to decrease, which is manifested as a decrease in signal quality.

[0061] Refers to the correction of the impact of environmental interference on signal quality. This item reflects the ratio of the interference intensity in the environment to the maximum interference value. The impact of environmental interference on signal quality is usually additive, which means that if there is a strong interference signal in the environment, the signal quality will be suppressed. This interference correction factor is expressed in subtraction form, indicating that the stronger the interference, the more the signal quality decreases. This addition factor indicates that if the environmental interference is strong and the RADC value is large, the final signal quality analysis value QKL will be further reduced. During the use of the law enforcement recorder, the device may be affected by electromagnetic interference in the surrounding environment. For example, the law enforcement recorder is in a high electromagnetic interference environment, such as an industrial area or an area with dense electronic equipment. At this time, RADC will be large, resulting in a decrease in the final signal quality. Through this factor, the impact of interference on signal quality can be accurately adjusted.

[0062] The processing process of the signal quality submodule is as follows: the signal strength adjustment value PEQ, the data transmission rate adjustment value RAD, the environmental interference factor RADC and the environmental maximum interference value RADD are input into the signal quality submodule, and the signal quality submodule outputs the signal quality analysis value QKL.

[0063] In this embodiment, first, for parameters that require high-precision measurement, such as noise and interference, external devices such as electromagnetic interference analyzers, noise meters, and spectrum analyzers can be used for regular monitoring. These external devices can provide detailed data on environmental interference, noise, spectrum, etc. The police recorder can regularly obtain these data for input. For the input of the parameter of total interference power, it can also be remotely controlled and adjusted based on the control center's evaluation of the transmitted data, or based on environmental factors, the location of the recorder can be sensed with the help of GPS positioning, and then it can be determined whether there is a high interference source area in the environment to adjust the input of the parameter in a direction. For example, there may be less interference in an open area, and there may be more interference in an electronics factory or a large residential area. The same method can be used for noise power. The location of the recorder can be sensed based on GPS positioning, and the noise level can be judged based on time information and weather information. If the recorder is in an open area with few people, the noise interference is usually less at this time. If it is in a downtown area or an entertainment venue, there will inevitably be more noise interference, etc. Therefore, the purpose of assisting the analysis and input of the parameters of this submodule can still be achieved with the help of location information and weather information.

[0064] Secondly, through the calculated signal quality analysis value QKL, the system can determine the health of the wireless communication link. If the signal quality is poor, the system can decide to reduce the transmission rate, or trigger other optimization mechanisms, such as adjusting the transmission power, increasing error correction and other measures to improve communication stability. By monitoring the changes in QKL in real time, the system can detect potential communication problems. For example, if the signal quality is lower than the preset threshold, the system can automatically adjust the strategy, notify the operator, or in more serious cases, switch to an alternative frequency band or protocol.

[0065] In addition, in the police law enforcement recorder system, quality fluctuations are prone to occur under the influence of multiple interferences. By optimizing the signal quality through this formula, it can, to a certain extent, ensure that the device can still reliably transmit video data and audio data when the signal is damaged. By comprehensively considering environmental interference factors, it can enhance the communication capability of the device in an environment with large interference and ensure the stability of data transmission.

[0066] It is worth noting that the weight factor RD of the environmental interference factor in the data transmission submodule is affected based on further analysis of the signal quality analysis value QKL, so as to optimize the influence of environmental interference on the data transmission rate adjustment value RAD. The specific processing process is as follows: First: RD k+1 =RD k -KL×(∂QKL k / ∂RD k ); Second: Set the iteration termination condition: Termination condition 1: The number of iterations is 100; Termination condition 2: |RD k+1 -RD k |<0.001; in: RD k+1 Refers to the weight factor of the environmental interference factor after k+1 iterations, RD k Refers to the weight factor of the environmental interference factor after k iterations, the signal quality analysis value after k iterations, and KL refers to the learning rate, which is used to control RD k The change range of ∂QKL / ∂RD k Refers to QKL k About RD k The partial derivative of QKL with RD k Sensitivity to change.

[0067] In this embodiment, by iterating RD, we can dynamically adjust the impact of environmental interference on data transmission, optimize the balance between the signal quality analysis value QKL and the data transmission rate RAD, and in the case of large interference, iteration can gradually reduce the impact of interference and improve signal quality. By adjusting the RD data transmission submodule, the transmission rate RAD will change, especially in a high-interference environment, iteration can effectively reduce RD, thereby improving RAD and improving the overall network performance. By iteratively optimizing the weight RD, we can accurately control the impact of environmental interference on the data transmission rate, especially in an environment with large interference. By adjusting RD, we can balance the signal quality and transmission rate in different environments, improve the stability and reliability of the system, and by optimizing RD, we can more flexibly control the impact of environmental interference on the rate, thereby optimizing the transmission performance of the system.

[0068] In the specific implementation process, multiple sub-modules in this method are used to form a multifunctional police law enforcement recorder wireless communication network system. The initial transmission signal strength value PEQA, the current transmission distance value PEQC and the atmospheric influence factor PEQE are input into the signal strength sub-module, and the signal strength sub-module outputs the signal strength adjustment value PEQ. This sub-module adjusts the wireless signal strength based on dynamic factors such as transmission distance, environmental interference and atmospheric factors. In the use scenario of the law enforcement recorder, the device may encounter different environmental interferences, such as buildings, terrain and weather changes, resulting in signal attenuation. Therefore, the signal strength is adjusted through this sub-module to ensure the stability of wireless communication. This sub-module can enable the police law enforcement recorder system to still ensure good signal quality in complex urban environments, closed indoor environments and bad weather, and facilitate the stable transmission of video and audio data in different environments, ensuring the upload of real-time data and smooth communication. The signal strength can be adjusted in real time according to actual environmental factors such as weather, obstacles and interference to ensure the stability of signal transmission. In complex environments such as cities and mountainous areas, the signal will be affected by many aspects. This sub-module can dynamically adjust the signal power to ensure the quality of information transmission.

[0069] By inputting the signal strength adjustment value PEQ and the initial transmission signal strength value PEQA into the data transmission submodule, the data transmission submodule outputs the data transmission rate adjustment value RAD. This submodule dynamically adjusts the transmission rate according to the actual signal strength, encryption load and environmental interference, and taking into account the impact of encryption and environmental interference on bandwidth, the bandwidth requirements for the transmission of real-time video streams and audio data and other data uploads in the police law enforcement recorder system are very high. Police law enforcement recorders often need to efficiently transmit high-definition video and audio data on site, which puts forward high requirements on bandwidth and transmission rate. This submodule can dynamically adjust the system bandwidth allocation to avoid data transmission delays or freezes caused by signal attenuation or encryption calculations, ensuring that the recorder can upload video and audio data in real time. In the case of insufficient signal strength or large interference, the data transmission rate can be appropriately reduced to ensure stable data transmission.

[0070] By inputting the signal strength adjustment value PEQ, the data transmission rate adjustment value RAD, the environmental interference factor RADC and the maximum environmental interference value RADD into the signal quality submodule, the signal quality submodule outputs the signal quality analysis value QKL. Through the calculated signal quality, the system can judge the health of the wireless communication link. If the signal quality is poor, the system can decide to reduce the transmission rate or trigger other optimization mechanisms, such as adjusting the transmission power and increasing error correction to improve communication stability. Through real-time monitoring changes, the system can detect potential communication problems. For example, if the signal quality is lower than the preset threshold, the system can automatically adjust the strategy to notify the operator, or switch to the backup frequency band or protocol in more serious cases. In the police law enforcement recorder system, quality fluctuations are prone to occur under the influence of multiple interferences. By optimizing the signal quality through this submodule, it can play a role in the device still reliably transmitting video data and audio data when the signal is damaged to a certain extent. By comprehensively considering environmental interference factors, the communication capability of the device in an environment with large interference can be enhanced to ensure the stability of data transmission.

[0071] Example 2: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The adjustment module adjusts the transmission power of the law enforcement recorder based on the signal strength adjustment value to maintain sufficient signal strength. The adjustment module adjusts the data transmission rate based on the data transmission rate to ensure that the audio and video data can be stably uploaded to the control center.

[0072] In this embodiment, the transmission power of the law enforcement recorder is first adjusted based on the signal strength adjustment value. During police law enforcement, the law enforcement recorder is often under different geographical and environmental conditions and may encounter signal attenuation. At this time, the change in signal strength may affect the real-time transmission of video and audio. If the signal strength adjustment value shows that the signal is weak, the system will automatically adjust the transmission power of the law enforcement recorder or switch to other frequency bands to provide a stronger signal in a low-signal environment. If the device encounters a large environmental interference, the signal strength is dynamically adjusted to ensure stable signal transmission.

[0073] The data transmission rate is adjusted based on the data transmission rate to ensure that the audio and video data can be stably uploaded to the control center. Police law enforcement recorders often need to transmit data in complex environments. The data transmission rate is affected by factors such as signal strength, encryption load, and interference. Insufficient bandwidth may cause data delays or packet loss, affecting the real-time performance of the law enforcement process. If the signal quality is poor, such as at a long distance or in an area with strong environmental interference, the system will automatically reduce the data transmission rate to avoid transmission failure or jamming due to low bandwidth. In an environment with strong signals and sufficient bandwidth, the system will adjust the data transmission rate to a higher rate based on the maximum theoretical rate to ensure the smooth transmission of real-time video streams.

[0074] Based on the signal quality analysis value, in a complex urban environment, the signals of police law enforcement recorders are often affected by many interferences, resulting in a decrease in signal quality and affecting the transmission quality of video and audio. Through the calculated signal quality analysis value, the system can evaluate the signal quality in the current environment, determine whether there is multipath propagation or excessive environmental interference, and make corresponding adjustments. If the signal quality analysis value calculated by the system shows that the signal quality is poor, the system will try to adjust the communication protocol or change the propagation path of the wireless signal to avoid data loss or video freeze due to multipath effects or interference. The system can also adaptively adjust the data encoding method and optimize the video compression technology to reduce bandwidth requirements and enhance anti-interference capabilities.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional police law enforcement recorder, characterized in that: include: A recording and video recording module (1), a light emitting module (2), a microphone module (3), a display module (4), a battery module, a wireless communication module, and a wireless communication processing module; The audio and video data of the scene are collected by the recording and video recording module (1), and then the data is transmitted to the control center by the wireless communication module, and the lighting module (2) provides lighting and warning functions; The microphone module (3) is used to satisfy the communication intercom function, and the wireless communication processing module is used to adjust the data communication; The wireless communication processing module includes a data acquisition module, a data processing module, a calculation and analysis module and an adjustment module.

2. The multifunctional police law enforcement recorder according to claim 1 is characterized in that: The wireless communication processing module is specifically: Data collection module: The data collection module is used to obtain the data intensity information, the location information of the law enforcement recorder, and the current weather information of the outside world; Data processing module: input the data strength information, the location information of the law enforcement recorder, and the current weather information of the outside world into the data processing module, and the data processing module cleans and normalizes the input data. The data processing module outputs the initial transmission signal strength value, the current transmission distance value, and the atmospheric influence factor; Calculation and analysis module: the initial transmission signal strength value, the current transmission distance value and the atmospheric influence factor are input into the calculation and analysis module, and the calculation and analysis module outputs the signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value; Adjustment module: The signal strength adjustment value, the data transmission rate adjustment value and the signal quality analysis value are input into the adjustment module, and the adjustment module adjusts the data transmission of the wireless communication module based on the input data.

3. The multifunctional police law enforcement recorder according to claim 1 is characterized in that: The calculation and analysis module includes a signal strength submodule, a data transmission submodule and a signal quality submodule.

4. The multifunctional police law enforcement recorder according to claim 2 is characterized in that: The calculation formula of the signal strength submodule is as follows: ； in: PEQ refers to the signal strength adjustment value, PEQA refers to the initial transmission signal strength value, PEQB refers to the distance reference value, PEQC refers to the current transmission distance value, PEQD refers to the environmental impact factor, PEQE refers to the atmospheric impact factor, PEQF refers to the signal attenuation value under standard atmospheric conditions, PA refers to the impact weight factor of the distance, PB refers to the impact weight factor of the environment, and PC refers to the impact weight factor of the atmospheric factor; The reference reflects the degree of signal propagation attenuation; Refers to the effect of the environment on signal strength; Refers to the correction used to adjust for the effects of atmospheric conditions on signal propagation.

5. The multifunctional police law enforcement recorder according to claim 3 is characterized in that: The calculation formula of the data transmission submodule is as follows: ； in: RAD refers to the data transmission rate adjustment value, RADA refers to the maximum theoretical transmission rate of the system, RADE refers to the load of encryption calculation, RADB refers to the maximum encryption calculation load, RADC refers to the environmental interference factor, RADD refers to the maximum environmental interference value, RA refers to the weight factor of RADA, RB refers to the weight factor of the signal strength influencing factor, RC refers to the weight factor of the encryption influencing factor, and RD refers to the weight factor of the environmental interference factor; Refers to the strength of the current signal relative to the initial transmitted signal; Refers to the effect of encryption operations on data transmission rate; Refers to correcting the effect of environmental interference on the transmission rate.

6. The multifunctional police law enforcement recorder according to claim 4, characterized in that: The calculation formula of the signal quality submodule is as follows: ； in: QKL refers to the signal quality analysis value, QKLA refers to the background noise intensity in the signal, QKLB refers to the total interference power, QA refers to the weight factor of the noise interference effect, and QC refers to the weight coefficient of environmental interference; Refers to the ratio between signal strength and transmission rate and noise and interference; Refers to correcting the impact of environmental interference on signal quality.

7. The multifunctional police law enforcement recorder according to claim 2 is characterized in that: The adjustment module adjusts the transmission power of the law enforcement recorder based on the signal strength adjustment value to maintain sufficient signal strength.

8. The multifunctional police law enforcement recorder according to claim 2 is characterized in that: The adjustment module adjusts the data transmission rate based on the data transmission rate to ensure that the audio and video data can be stably uploaded to the control center.

Images