CN217787378U

CN217787378U - Portable radar signal acquisition device and system

Info

Publication number: CN217787378U
Application number: CN202220293744.7U
Authority: CN
Inventors: 章敏; 谢树平; 王萌
Original assignee: Hunan Econavi Technology Co Ltd
Current assignee: Hunan Econavi Technology Co Ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-11-11
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a portable radar signal collection system, including setting up antenna module, radio frequency signal receiving module, signal processing module and the wireless communication module in the casing, antenna module, radio frequency signal receiving module, signal processing module and wireless communication module connect gradually for the radar signal that antenna module received obtains after radio frequency signal receiving module and signal processing module in proper order the acquisition result, sends for wireless terminal through the wireless communication module. The utility model discloses the integrated level is higher to can send the data transmission after signal processing module handles for wireless terminal through wireless communication module, thereby ensure to look over data at scene or long-range through wireless terminal, guarantee data acquisition's real-time.

Description

Portable radar signal acquisition device and system

Technical Field

The utility model relates to a radar technical field especially relates to a portable radar signal collection system and system.

Background

The signal acquisition of traditional radar equipment adopts superheterodyne to receive measurement system, carries out the frequency mixing with the signal that local oscillator generated, and output intermediate frequency signal carries out subsequent digital signal processing, leads to equipment work consumption height, is not convenient for carry the use.

In a non-cooperative environment or in some outdoor places with high safety requirements, radar target radiation signals need to be collected in a concealed mode, but in the prior art, fixed detection equipment is relied on, the power consumption is high, and an external power supply is required to supply power continuously; or even if the portable detection device can be carried, the detection device has the defects of inconvenient carrying, low concealment and the like due to large volume or weight.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that: technical problem to prior art exists, the utility model provides a portable radar signal collection system and system, the integrated level is high, has characteristics miniaturized, lightweight, low-power consumption.

In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a portable radar signal collection system, is including setting up antenna module, radio frequency signal receiving module, signal processing module and the wireless communication module in the casing, antenna module, radio frequency signal receiving module, signal processing module and wireless communication module connect gradually for the radar signal that antenna module received obtains after radio frequency signal receiving module and signal processing module in proper order the collection result, sends for wireless terminal through the wireless communication module.

Furthermore, the radio frequency signal receiving module comprises a filtering unit and a channel distribution unit, the signal processing module comprises a single-bit sampling unit and a processor unit, the input end of the filtering unit is connected with the antenna module, the output end of the filtering unit is connected with the single-bit sampling unit through a first channel of the channel distribution unit, the output end of the single-bit sampling unit is connected with a first input end of the processor unit, and the processor unit is further connected with the wireless communication module.

Furthermore, the radio frequency signal receiving module still includes the detection unit, the signal processing module still includes the signal acquisition unit, the output of filtering unit still connects gradually through the second passageway of passageway distribution unit and detection unit, signal acquisition unit, the output of signal acquisition unit and the second input of treater unit are connected.

Furthermore, the radio frequency signal receiving module further comprises an amplitude limiting unit, and the amplitude limiting unit is arranged between the filtering unit and the antenna module.

Further, the radio frequency signal receiving module further comprises an amplifier unit, and the amplifier unit is arranged between the filtering unit and the channel distribution unit.

Furthermore, the processor unit comprises an FPGA unit and an ARM processor, the output end of the single-bit sampling unit is connected with the first interface of the FPGA unit, the output end of the signal acquisition unit is connected with the second interface of the FPGA unit, and the FPGA unit is connected with the wireless communication module through the ARM processor.

Furthermore, the signal processing module further comprises a storage unit, and the output end of the ARM processor is connected with the storage unit.

The system further comprises a time-based positioning module, wherein the time-based positioning module is connected with the signal processing module, so that the time and position information can be acquired by the time-based positioning module when the signal processing module passes through the time-based positioning module.

And the charging power supply module is respectively connected with the power supply ends of the radio frequency signal receiving module, the signal processing module and the wireless communication module.

The utility model also provides a portable radar signal collection system, including wireless terminal and arbitrary portable radar signal collection system, portable radar signal collection system's wireless communication module passes through WIFI or bluetooth and wireless terminal connects.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses set up antenna module, radio frequency signal receiving module, signal processing module, wireless communication module in the casing, the integrated level is higher to can send the data transmission after the signal processing module is handled for wireless terminal through wireless communication module, thereby ensure to look over data at scene or long-range through wireless terminal, guarantee data acquisition's real-time.

2. The utility model discloses a signal processing module includes single bit sampling unit, and the output of filtering unit passes through the first passageway and the single bit sampling unit connection of passageway distribution unit, and the output of single bit sampling unit and the first input of treater unit are connected to realize single bit parameter measurement, single bit sampling unit compares traditional superheterodyne and receives the consumption lower, and enlarged instantaneous bandwidth, improved the operation speed.

3. The utility model discloses still set up the charging source module in the casing, can do the autonomous working under the condition of no external power supply to the portability has further been improved.

Drawings

Fig. 1 is a block diagram of a portable radar signal acquisition device according to an embodiment of the present invention.

Fig. 2 is a block diagram of a specific structure of the rf signal receiving module according to an embodiment of the present invention.

Fig. 3 is a block diagram of a specific structure of a signal processing module according to an embodiment of the present invention.

Fig. 4 is a specific structural block diagram of the timing system positioning module in the embodiment of the present invention.

Fig. 5 is a specific structural block diagram of the charging power supply module in the embodiment of the present invention.

Illustration of the drawings: the system comprises an antenna module 1, a radio frequency signal receiving module 2, a signal processing module 3, a wireless communication module 4, a time system positioning module 5, a charging power supply module 6, a filtering unit 21, a channel allocation unit 22, a detection unit 23, a limiting unit 24, an amplifier unit 25, a single-bit sampling unit 31, a processor unit 32, a signal acquisition unit 33, a storage unit 34, a FPGA unit 321, an ARM processor 322 and a shell 101.

Detailed Description

The invention is further described in the following description with reference to the drawings and the specific preferred embodiments, but the scope of protection of the invention is not limited thereby.

As shown in fig. 1, the present embodiment provides a portable radar signal collecting device, including an antenna module 1 disposed in a housing 101, a radio frequency signal receiving module 2, a signal processing module 3 and a wireless communication module 4, the antenna module 1, the radio frequency signal receiving module 2, the signal processing module 3 and the wireless communication module 4 are sequentially connected, a time system positioning module 5 and a charging power supply module 6 are further disposed in the housing 101, the time system positioning module 5 is connected to the signal processing module 3, the charging power supply module 6 is connected to the antenna module 1, the radio frequency signal receiving module 2, the signal processing module 3, the wireless communication module 4, the power supply terminal of the time system positioning module 5 is respectively connected to the wireless communication module 4, by this structure, the portable radar signal collecting device of the present embodiment integrates the antenna module 1, the radio frequency signal receiving module 2, the signal processing module 3, the wireless communication module 4, the time system positioning module 5 and the charging power supply module 6 into the housing 101, has a higher integration level, thereby having a more comprehensive function, so that radar signals received by the antenna module 1 are preprocessed by the radio frequency signal receiving module 2, the radio frequency signals are processed by the wireless communication module 3, and the result of the wireless communication module can be further processed by the wireless communication module 3, and the wireless communication module can be set up to the external terminal to obtain the normal information processing parameters and send the information processing module and send the external information to the external terminal.

In this embodiment, the antenna module 1 includes broadband dipole antenna and horn antenna, adopts the mode that broadband dipole antenna and horn antenna combined together, and antenna module 1 can improve antenna gain, is convenient for receive the radar signal of target frequency channel, and in this embodiment, the target frequency channel is 8GHz ~ 12GHz broadband.

As shown in fig. 2, in this embodiment, the rf signal receiving module 2 is composed of a filtering unit 21, a channel allocating unit 22, a detecting unit 23, a limiting unit 24, and an amplifier unit 25, and receives the rf signal from the antenna module 1, and performs processing such as amplification, filtering, and detection, where:

the filtering unit 21 adopts a filter for filtering signals except for 8 GHz-12 GHz;

the channel allocation unit 22 adopts a power divider, and can divide an input signal into two parts and output the two parts;

the detection unit 23 adopts a detector, and is configured to perform envelope detection on an input signal and output a video detection signal;

the amplitude limiting unit 24 is an amplitude limiter, is arranged between the filtering unit 21 and the antenna module 1, and is used for preventing a pre-stage amplifying circuit of a receiving channel from being burnt by leaked high-power signals when the device works, and meanwhile, the receiving of low-level useful signals is not influenced;

the amplifier unit 25 is an amplifier, and is disposed between the filtering unit 21 and the channel allocating unit 22, and configured to amplify the signal filtered by the filtering unit 21, so as to ensure that the device has a better noise coefficient and an input signal dynamic range requirement.

As shown in fig. 2 and fig. 3, in this embodiment, the signal processing module 3 includes a single-bit sampling unit 31 and a processor unit 32, the single-bit sampling unit 31 employs a single-bit ADC and can perform single-bit sampling on an input signal, an input end of the filtering unit 21 is connected to the antenna module 1, an output end of the filtering unit 21 is connected to the single-bit sampling unit 31, an output end of the single-bit sampling unit 31 is connected to a first input end of the processor unit 32, the single-bit sampling unit 31 performs single-bit sampling on a signal output by the filtering unit 21, and the processor unit 32 can eliminate a multiplication portion in DFT operation in a subsequent signal processing process according to a single-bit sampling result to expand an instantaneous bandwidth and improve an operation speed, and the single-bit sampling has a characteristic of low power consumption compared with conventional superheterodyne reception.

As shown in fig. 2 and fig. 3, in this embodiment, the signal processing module 3 further includes a signal acquisition unit 33, an output end of the filtering unit 21 is connected to the single-bit sampling unit 31 through a first channel of the channel allocation unit 22, an output end of the filtering unit 21 is further connected to the detection unit 23 and the signal acquisition unit 33 in sequence through a second channel of the channel allocation unit 22, and an output end of the signal acquisition unit 33 is connected to a second input end of the processor unit 32. In this embodiment, the channel allocation unit 22 divides the input signal into two parts for output, one part is supplied to the single-bit sampling unit 31 for ultra-wideband sampling, and the other part is supplied to the detection unit 23 for logarithmic video detection; in this embodiment, the detection unit 23 performs envelope detection on the input signal by using a detector, and outputs a video detection signal to the signal acquisition unit 32; in this embodiment, the signal acquisition unit 33 adopts a low-speed ADC for performing low-speed ADC sampling on the video detection signal.

As shown in fig. 3, in this embodiment, the processor unit 32 includes an FPGA unit 321 and an ARM processor 322, an output end of the single-bit sampling unit 31 is connected to a first interface of the FPGA unit 321 through a high-speed serial interface, an output end of the signal acquisition unit 32 is connected to a second interface of the FPGA unit 321, and the FPGA unit 321 is connected to the wireless communication module 4 through the ARM processor 322. The FPGA unit 321 measures parameters such as carrier frequency, pulse width, repetition frequency, etc. of the pulse signal according to the sampling results of the single-bit sampling unit 31 and the signal acquisition unit 32, forms PDW parameters (pulse description words, including frequency, amplitude, pulse width, arrival time), and then sends the PDW parameters to the ARM processor 322. In this embodiment, the ARM processor 322 is configured to control and manage the time system positioning module 5, the wireless communication module 4, and the charging power module 6, and as shown in fig. 3, the ARM processor 322 is connected to the time system positioning module 5 and the wireless communication module 4, respectively.

As shown in fig. 3, in the present embodiment, the signal processing module 3 further includes a storage unit 34, an output terminal of the arm processor 322 is connected to the storage unit 34, and the storage unit 34 adopts an SD card, so as to save cost and reduce occupied space.

With the above structure, the ARM processor 322 may store the acquired PDW parameter as a collection result in the storage unit 34 or send the collection result to the wireless communication module 4, and then control the wireless communication module 4 to send the collection result to the wireless terminal.

As shown in fig. 4, in this embodiment, the time alignment module 5 is disposed on a time alignment antenna outside the housing 101 and a time alignment processing unit inside the housing 101, the time alignment antenna can receive signals of GPS, beidou, and Galileo and transmit the signals to the time alignment processing unit, and the time alignment processing unit transmits time and position information to the signal processing module 3 through an I2C interface, so that the time alignment module 5 acquires time and position information by the signal processing module 3.

As shown in fig. 5, the charging power supply module 6 in this embodiment includes a charging circuit, a rechargeable battery and a power supply circuit, and the rechargeable battery is respectively connected to the power supply terminals of the rf signal receiving module 2, the signal processing module 3, the wireless communication module 4 and the timing system positioning module 5 through the power supply circuit, so that the normal operation of each functional module can be maintained without an external power supply. In this embodiment, be equipped with the interface that charges on casing 101, external power source accessible mains power adapter or vehicle mounted power adapter are connected through interface and the charging circuit that charges to charge for rechargeable battery.

The wireless communication module 4 in this embodiment includes a WIFI antenna and a WIFI processing unit, and the WIFI antenna is connected with the signal processing module 3 through the WIFI processing unit, can acquire a signal sent by the signal processing module 3 and upload the signal to the wireless terminal through a WIFI network, and can also acquire a control instruction and a setting parameter of the wireless terminal through the WIFI network and send the control instruction and the setting parameter to the signal processing module 3.

Or, the wireless communication module 4 in this embodiment includes a bluetooth antenna and a bluetooth processing unit, the bluetooth antenna is connected to the signal processing module 3 through the bluetooth processing unit, and can acquire the signal sent by the signal processing module 3 and upload the signal to the wireless terminal through a bluetooth network, and meanwhile, can also acquire the control instruction and the setting parameter of the wireless terminal through the bluetooth network and send the control instruction and the setting parameter to the signal processing module 3.

This embodiment still provides a portable radar signal collection system, the portable radar signal collection system of this embodiment including wireless terminal and, portable radar signal collection system's wireless communication module 4 passes through WIFI or bluetooth network and wireless terminal connects, in this embodiment, wireless terminal can be cell-phone or panel computer, operating personnel can look over the data that wireless communication module 4 sent through cell-phone or panel computer, perhaps send operating command to wireless communication module 4 through cell-phone or panel computer, thereby realize working parameter setting and operating condition monitoring.

The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. A portable radar signal acquisition device is characterized by comprising an antenna module (1), a radio frequency signal receiving module (2), a signal processing module (3) and a wireless communication module (4) which are arranged in a shell (101), wherein the antenna module (1), the radio frequency signal receiving module (2), the signal processing module (3) and the wireless communication module (4) are sequentially connected, so that radar signals received by the antenna module (1) are sequentially transmitted to a wireless terminal through the radio frequency signal receiving module (2) and the signal processing module (3) to obtain acquisition results;

the radio frequency signal receiving module (2) comprises a filtering unit (21), the signal processing module (3) comprises a single-bit sampling unit (31) and a processor unit (32), the input end of the filtering unit (21) is connected with the antenna module (1), the output end of the filtering unit (21) is connected with the input end of the single-bit sampling unit (31), the output end of the single-bit sampling unit (31) is connected with the first input end of the processor unit (32), and the processor unit (32) is further connected with the wireless communication module (4);

the portable radio frequency charging device is characterized by further comprising a charging power supply module (6) arranged in the shell (101), wherein the charging power supply module (6) is connected with the power supply ends of the radio frequency signal receiving module (2), the signal processing module (3) and the wireless communication module (4) respectively.

2. The portable radar signal acquisition device according to claim 1, wherein the radio frequency signal receiving module (2) further comprises a channel distribution unit (22) and a detection unit (23), the signal processing module (3) further comprises a signal acquisition unit (33), an output end of the filtering unit (21) is connected with the single-bit sampling unit (31) through a first channel of the channel distribution unit (22), an output end of the filtering unit (21) is further connected with the detection unit (23) and the signal acquisition unit (33) in sequence through a second channel of the channel distribution unit (22), and an output end of the signal acquisition unit (33) is connected with a second input end of the processor unit (32).

3. The portable radar signal acquisition device according to claim 1, wherein the radio frequency signal receiving module (2) further comprises a limiting unit (24), the limiting unit (24) being arranged between the filtering unit (21) and the antenna module (1).

4. The portable radar signal acquisition device according to claim 1, wherein the radio frequency signal receiving module (2) further comprises an amplifier unit (25), the amplifier unit (25) being arranged between the filtering unit (21) and the channel distribution unit (22).

5. The portable radar signal acquisition device according to claim 2, wherein the processor unit (32) comprises an FPGA unit (321) and an ARM processor (322), an output of the single-bit sampling unit (31) is connected to a first interface of the FPGA unit (321), an output of the signal acquisition unit (33) is connected to a second interface of the FPGA unit (321), and the FPGA unit (321) is connected to the wireless communication module (4) through the ARM processor (322).

6. The portable radar signal acquisition device according to claim 5, wherein the signal processing module (3) further comprises a storage unit (34), and the output of the ARM processor (322) is connected to the storage unit (34).

7. The portable radar signal acquisition device according to claim 1, further comprising a time system positioning module (5), wherein the time system positioning module (5) is connected with the signal processing module (3), so that the signal processing module (3) acquires time and position information through the time system positioning module (5).

8. A portable radar signal acquisition system, characterized in that, comprises a wireless terminal and the portable radar signal acquisition device of any one of claims 1 to 7, wherein the wireless communication module (4) of the portable radar signal acquisition device is connected with the wireless terminal through WIFI or bluetooth.