Complex scene explosion effect data acquisition system and method based on wireless transmission, and storage medium

Abstract

The invention discloses a complex scene explosion effect data acquisition system and method based on wireless transmission and a storage medium. Sensors are arranged, and data acquisition terminals are distributed around an explosion point; the sensor is connected with the data acquisition terminal through a cable; the data acquisition terminal is in wireless communication connection with the convergence AP, and the convergence AP is in wireless communication connection with the access AP; the access AP is connected with the wireless management equipment through a cable; and the wireless management equipment is connected with the analysis processing terminal through a wireless network bridge. The whole acquisition system can transmit explosion effect data acquired by the sensor to the analysis processing terminal in a wireless mode, and the analysis processing terminal processes the data; therefore, the acquisition system has the beneficial effects of instant data acquisition and instant data transmission, long data transmission distance, high transmission speed and strong scene adaptability.

Description

Technical Field

[0001] The present invention belongs to the technical field of damage effect assessment, and in particular relates to a complex scene explosion effect data acquisition system, method and storage medium based on wireless transmission. Background Art

[0002] In the prior art, the damage caused by explosives is mainly the result of the effects of explosion products and explosion effects. Explosion products usually act on targets that are relatively close, while targets at a longer distance are mainly damaged by explosion effects. Therefore, accurately obtaining the explosion effect overpressure data during the explosion of explosives is of great significance for explosive design and power evaluation.

[0003] At present, the commonly used explosion effect data acquisition and testing methods mainly include lead electrical measurement method and storage test method. The main problems of lead electrical measurement method are: ① the signal line is long, which will interfere with the real signal; ② the signal line is often hit by the explosion of explosives, resulting in incomplete recorded signals; ③ low-noise cables are expensive and the cost of one measurement is high; ④ the cable wiring is complicated during multi-channel measurement, and sufficient time is required for preparation; ⑤ to prevent the test cable from being hit, it needs to be buried deep underground, which is not conducive to operations in cold and mountainous areas. In the storage test method, after the explosion, the experimenters need to enter the test site to recover the equipment and download the data. In some complex scenarios of special working conditions, the experimenters cannot enter the site, the scenario applicability is poor, and the damage of the acquisition equipment during the test will lead to data loss. According to the above technical problems, technicians in this field have proposed wireless transmission technology. Wireless transmission technology has certain application advantages in the acquisition and transmission of explosion effect data, but the applicable range of wireless link communication is short, the transmission speed is slow, and the scope of use is small. Therefore, it has certain limitations and is difficult to apply to complex test area environments.

[0004] A new complex scene explosion effect data acquisition system is needed to achieve economical, high-speed, and real-time acquisition of explosion effect data in complex scenes such as long distance, large range, and scattered distribution. Summary of the invention

[0005] The purpose of the present invention is to provide a complex scene explosion effect data acquisition system based on wireless transmission, which is used to solve the technical problems of short transmission distance, slow transmission speed and low scene adaptability of the acquisition system in the prior art.

[0006] The present invention also aims to provide a method for collecting explosion effect data in complex scenes based on wireless transmission.

[0007] Another object of the present invention is to provide a computer-readable storage medium.

[0008] The technical solution of the present invention to solve the technical problem is: A complex scene explosion effect data acquisition system based on wireless transmission, comprising sensors, data acquisition terminals, aggregation APs, access APs, wireless management equipment, and analysis and processing terminals; the sensors and data acquisition terminals are distributed around the explosion point; the sensors and data acquisition terminals are connected via cables; the data acquisition terminals and aggregation APs are connected via wireless communication, and the aggregation APs and access APs are connected via wireless communication; the access APs and wireless management equipment are connected via cables; the wireless management equipment and analysis and processing terminals are connected via a wireless bridge.

[0009] Furthermore, the data acquisition terminal includes a conditioning circuit, a storage module, an AD conversion module and an FPGA module. The conditioning circuit is electrically connected to the storage module and the AD conversion module respectively; the AD conversion module is electrically connected to the FPGA module.

[0010] Furthermore, the conditioning circuit includes an isolation capacitor, a first follower, a second follower, a filter, and a voltage regulating circuit; the isolation capacitor is electrically connected to the first follower and the second follower, respectively; the first follower is electrically connected to the storage module; the second follower is electrically connected to the filter; the filter is electrically connected to the voltage regulating circuit; and the voltage regulating circuit is electrically connected to the AD conversion module.

[0011] Furthermore, a power source is arranged around the explosion point, and the power source is electrically connected to the sensor and the data acquisition terminal respectively.

[0012] A collection method of complex scene explosion effect data collection system based on wireless transmission, comprising the following steps: S1: The wireless management device sends a collection instruction to the data collection terminal, and the data collection terminal sends the collection instruction to the sensor; S2: The sensor transmits the collected explosion effect data to the data acquisition terminal. The conditioning circuit in the data acquisition terminal filters and regulates the explosion effect data. The AD conversion circuit converts the processed explosion effect data. The FPGA module caches the converted explosion effect data and frames the data. A frame header and a timestamp are added to the converted explosion effect data. The explosion effect data with the frame header and the timestamp are transmitted to the aggregation AP. S3: The aggregation AP integrates the explosion effect data and transmits the integrated explosion effect data to the wireless management device through the access AP; S4: The wireless management device stores the integrated explosion effect data and transmits it to the analysis and processing terminal via a wireless bridge.

[0013] A computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the device where the computer-readable storage medium is located executes a complex scene explosion effect data acquisition method based on wireless transmission.

[0014] The beneficial effects of the present invention are as follows: by setting sensors, data acquisition terminals, convergence APs, access APs, wireless management equipment, wireless bridges, and analysis and processing terminals; the sensors and data acquisition terminals are distributed around the explosion point; the sensors and data acquisition terminals are connected by cables; the data acquisition terminals are connected to the convergence APs, wireless management equipment, and analysis and processing terminals by wireless communication, and the convergence APs are connected to the access APs by wireless communication; the access APs are connected to the wireless management equipment by cables; and the wireless management equipment is connected to the analysis and processing terminals by wireless bridges. The entire acquisition system can transmit the explosion effect data collected by the sensors to the analysis and processing terminal by wireless, and the analysis and processing terminal processes the data; the wireless management equipment performs backup storage to prevent the data acquisition terminal from being destroyed and causing data loss, and improve the reliability of data storage, that is, the acquisition system can achieve the beneficial effects of immediate acquisition and transmission of data and long data storage distance, fast transmission speed, and strong scene adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the complex scene explosion effect data acquisition system based on wireless transmission of the present invention; Figure 2 is a distribution diagram of sensors around the explosion point of the present invention; Figure 3 It is a circuit schematic diagram of a data acquisition terminal of a complex scene explosion effect data acquisition system based on wireless transmission of the present invention; Figure 4 It is an information transmission diagram of the present invention's aggregation AP and access AP equipped with a wireless bridge and a customized antenna; Figure 5 It is a wireless transmission coverage diagram based on multi-point mesh distribution of the present invention; Figure 6 It is a flow chart of the method for collecting data of explosion effects in complex scenes based on wireless transmission of the present invention. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] Embodiment 1: like Figure 1As shown, the present invention discloses a complex scene explosion effect data acquisition system based on wireless transmission, including sensors, data acquisition terminals, aggregation APs, access APs, wireless management equipment, wireless bridges, and analysis and processing terminals; the sensors and data acquisition terminals are distributed around the explosion point. Figure 2 As shown, the sensors are generally arranged around the explosion point with a radius of 10m. A power supply is also set around the explosion point. The power supply is electrically connected to the sensor and the data acquisition terminal respectively to supply power to the sensor and the data acquisition terminal. The power supply is equipped with a protection device to prevent explosion. It can work continuously for not less than 48 hours in the equipped power supply mode. The sensor and the data acquisition terminal are connected by cables, and multiple sensors can be connected to one data acquisition terminal at the same time through cables; the data acquisition terminal is connected to the aggregation AP, the wireless management device, and the analysis and processing terminal through wireless communication. The distance between the data acquisition terminal and the aggregation AP is generally not more than 300 meters. The aggregation AP device has the function of providing hotspots. Multiple data acquisition terminals can be connected to one aggregation AP hotspot at the same time through the wireless module in the terminal. The aggregation AP is connected to the access AP through wireless communication. The transmission distance between the aggregation AP and the access AP can reach 3km, and the transmission speed can reach 200Mbps. The access AP is connected to the wireless management device through cables, and multiple access APs can be connected to one wireless management device at the same time through cables. Specifically, the AP in the explosion area A, the AP in the explosion area B, ..., and the AP in the explosion area M are connected to one wireless management device; the wireless management device and the analysis and processing terminal are connected through a wireless bridge. The analysis and processing terminal processes, analyzes and displays the explosion effect data collected in real time. The explosion effect data includes but is not limited to shock wave overpressure data, vibration data, free field data, temperature field data, electromagnetic pulse data, etc.

[0018] The specific parameter indicators of the wireless bridge are as follows: Wireless standards: 802.11A / N / AC; Maximum transmission bandwidth: 866Mbps; Frequency range: 4920~6100MHz; Maximum output power: 30dBm (1000mW); Polarization MIMO: 2X2; dual polarization To ensure that the explosion effect data can be transmitted over ultra-long distances and at high speeds, the data transmission distance can reach 140km (line-of-sight distance) and the transmission speed can reach 200Mbps.

[0019] like Figure 3As shown, the data acquisition terminal includes a conditioning circuit, a storage module, an AD conversion module and an FPGA module, wherein the conditioning circuit is electrically connected to the storage module and the AD conversion module respectively; the AD conversion module is electrically connected to the FPGA module; the conditioning circuit includes an isolation capacitor, a first follower, a second follower, a filter, and a voltage regulating circuit, wherein the output DC voltage of the sensor is filtered out by an isolation capacitor, and the AC voltage signal is transmitted to the next level circuit to ensure the driving ability of the signal. The first follower and the second follower are set to ensure the acquisition accuracy of the signal; before the signal enters the AD conversion module, a filter is set to perform low-pass filtering on the signal, and the anti-aliasing filter selects a Bessel filter to filter out interference signals outside the maximum sampling of the AD conversion module to avoid aliasing. The isolation capacitor is electrically connected to the first follower and the second follower respectively; the first follower is electrically connected to the storage module; the second follower is electrically connected to the filter; the filter is electrically connected to the voltage regulating circuit; the voltage regulating circuit is electrically connected to the AD conversion module. The voltage regulating circuit is set up because the signal range of the sensor output is ±5V, and the input range of the AD conversion module is ±4.096V. Therefore, attenuation is required to make the final signal within the input value voltage range of the AD converter. The attenuation is 2.5 times, and the signal range after attenuation is ±4V, which meets the input requirements of the AD converter.

[0020] like Figure 4 As shown in the figure, the data transmission diagram between the convergence AP and the access AP, where the built-in wireless antenna can meet the communication distance of 3km. If the distance between the convergence AP and the access AP is greater than 3km, generally in the case of complex terrain and long distance, long-distance transmission is required. By installing wireless bridges and customized antennas at both ends of the convergence AP and the access AP, ultra-long-distance (line-of-sight) wireless communication transmission of 140km between the convergence AP and the access AP can be achieved. Figure 5 As shown, a wireless management device is connected to multiple access APs through cables at the same time, an access AP is wirelessly connected to an aggregation AP (wireless bridges and customized antennas are installed at both ends of the aggregation AP and the access AP, and the wireless transmission distance can reach 140km), a aggregation AP is wirelessly connected to multiple data acquisition terminals (the wireless transmission distance can reach 300m), and a data acquisition terminal is connected to multiple sensors through cables at the same time, thereby forming a multi-point mesh distribution mode with a relay node (wireless management device) as the center and multiple acquisition nodes (explosion zone A acquisition node, explosion zone B acquisition node, ..., explosion zone M acquisition node) radiating to the surrounding area. This distribution mode can cover a test area with a radius of 140km based on the wireless acquisition transmission network, thereby realizing wireless acquisition and transmission of explosion effect data in complex scenarios such as long distance, large range, and scattered distribution.

[0021] Embodiment 2: like Figure 6 As shown, a collection method of a complex scene explosion effect data collection system based on wireless transmission includes the following steps: S1: The wireless management device sends a collection instruction to the data collection terminal, and the data collection terminal sends the collection instruction to the sensor; S2: The sensor transmits the collected explosion effect data to the data acquisition terminal. The conditioning circuit in the data acquisition terminal filters and regulates the explosion effect data. The AD conversion circuit converts the processed explosion effect data. The FPGA module caches the converted explosion effect data and frames the data. It adds a frame header and timestamp to the converted explosion effect data and transmits the explosion effect data with the frame header and timestamp to the converged AP. The total delay from the AD conversion circuit of the data acquisition terminal completing data sampling to the explosion effect data being transmitted to the converged AP is less than 530ns. The delay analysis of each link is as follows: Conversion time: <tCYC=100ns; Transmission time: calculated with 100MHz clock, <tMSB+tdata=100ns+160ns=260ns; Data framing: The maximum length of a data packet is 11 bytes (1 sync header + 2 time bytes + 6 data bytes + 2 check bytes), the clock is calculated at 8ns, and the framing time is ≤88ns; Data transmission: The framed data is sent by the wireless module in 80ns.

[0022] S3: The aggregation AP integrates the explosion effect data and transmits the integrated explosion effect data to the wireless management device through the access AP; S4: The wireless management device stores the integrated explosion effect data and transmits it to the analysis and processing terminal via a wireless bridge.

[0023] Embodiment 3: A computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the device where the computer-readable storage medium is located executes a complex scene explosion effect data acquisition method based on wireless transmission.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A complex scene explosion effect data acquisition system based on wireless transmission, characterized by: It includes sensors, data acquisition terminals, aggregation APs, access APs, wireless management equipment, wireless bridges, and analysis and processing terminals; the sensors and data acquisition terminals are distributed around the explosion points; the sensors and data acquisition terminals are connected via cables; the data acquisition terminals and aggregation APs are connected via wireless communication, and the aggregation APs and access APs are connected via wireless communication; the access APs and wireless management equipment are connected via cables; the wireless management equipment and analysis and processing terminals are connected via a wireless bridge.

2. The complex scene explosion effect data acquisition system based on wireless transmission according to claim 1 is characterized by: The data acquisition terminal includes a conditioning circuit, a storage module, an AD conversion module and an FPGA module. The conditioning circuit is electrically connected to the storage module and the AD conversion module respectively; the AD conversion module is electrically connected to the FPGA module.

3. The complex scene explosion effect data acquisition system based on wireless transmission according to claim 2 is characterized by: The conditioning circuit includes an isolation capacitor, a first follower, a second follower, a filter, and a voltage regulating circuit; the isolation capacitor is electrically connected to the first follower and the second follower, respectively; the first follower is electrically connected to the storage module; the second follower is electrically connected to the filter; the filter is electrically connected to the voltage regulating circuit; and the voltage regulating circuit is electrically connected to the AD conversion module.

4. The complex scene explosion effect data acquisition system based on wireless transmission according to claim 1 is characterized by: A power source is also arranged around the explosion point, and the power source is electrically connected to the sensor and the data acquisition terminal respectively.

5. A method for collecting data of explosion effects in complex scenes based on wireless transmission using any one of claims 1 to 4, characterized in that: The following steps are involved: S1: The wireless management device sends a collection instruction to the data collection terminal, and the data collection terminal sends the collection instruction to the sensor; S2: The sensor transmits the collected explosion effect data to the data acquisition terminal. The conditioning circuit in the data acquisition terminal filters and regulates the explosion effect data. The AD conversion circuit converts the processed explosion effect data. The FPGA module caches the converted explosion effect data and frames the data. A frame header and a timestamp are added to the converted explosion effect data. The explosion effect data with the frame header and the timestamp are transmitted to the aggregation AP. S3: The aggregation AP integrates the explosion effect data and transmits the integrated explosion effect data to the wireless management device through the access AP; S4: The wireless management device stores the integrated explosion effect data and transmits it to the analysis and processing terminal via a wireless bridge.

6. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the device where the computer-readable storage medium is located executes the method according to claim 5.

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