CN219105153U

CN219105153U - Portable radar measurement and control platform

Info

Publication number: CN219105153U
Application number: CN202223534852.8U
Authority: CN
Inventors: 贾旭
Original assignee: Beijing Huahang Radio Measurement Research Institute
Current assignee: Beijing Huahang Radio Measurement Research Institute
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-30
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to a portable radar measurement and control platform, belongs to the technical field of radar measurement and control, and solves the problems that in the prior art, the radar measurement and control platform is large in size and insufficient in function of a test interface. The system comprises a PXI case, a measurement and control function unit, a state control unit, a PXI power supply and a two-way power supply which are arranged in the PXI case, and a signal interface adapter arranged on an outlet board on the right side of the PXI case; the measurement and control functional unit adopts a PXI bus backboard which is connected with a PXI power supply; the two-way power supply is connected with the state control unit, the state control unit and the measurement and control functional unit are connected to the signal interface adapter, and the signal interface adapter is connected with the radar to be tested. The portable integrated radar measurement and control platform is realized.

Description

Portable radar measurement and control platform

Technical Field

The utility model relates to the technical field of radar measurement and control, in particular to a portable radar measurement and control platform.

Background

With the development of technology, the measurement and control equipment is more and more widely applied. The radar measurement and control platform is used as an important matched detection product of the radar, and plays a key role in performance detection of the radar.

The existing radar measurement and control platform is split, is not suitable for external field test and mobility requirements, and each functional module in the measurement and control platform is not in modularized design, and lacks a sufficient number of functional module slots, so that some functions cannot be tested. The outdoor diverse scene working condition information acquisition and test measurement requirements also put forward higher requirements on the portability of the test equipment.

Disclosure of Invention

In view of the above analysis, the embodiment of the utility model aims to provide a portable radar measurement and control platform, which is used for solving the problems of large volume and insufficient function of a test interface of the conventional radar measurement and control platform.

On one hand, the embodiment of the utility model provides a portable radar measurement and control platform, which comprises a PXI case, a measurement and control function unit, a state control unit, a PXI power supply and a two-way power supply which are arranged in the PXI case, and a signal interface adapter arranged on an outlet board on the right side of the PXI case; the measurement and control functional unit adopts a PXI bus backboard which is connected with a PXI power supply; the two-way power supply is connected with the state control unit, the state control unit and the measurement and control functional unit are connected to the signal interface adapter, and the signal interface adapter is connected with the radar to be tested.

Further, a radiating hole is formed in the left side panel of the PXI chassis, and the radiating hole is formed by arranging a plurality of round holes to form a rectangular shape.

Further, a touch display screen is arranged on the front side panel of the PXI case; and a power switch and a power input interface connector are also arranged on the right outlet board of the PXI case.

Further, the PXI bus back plane uses custom 8 slots, including 1 system slot and 7 expansion slots.

Further, the measurement and control functional unit includes: the system comprises a controller, an analog signal acquisition unit, a digital quantity control unit and a serial port communication unit; the controller occupies a system slot, and the analog signal acquisition unit, the digital quantity control unit and the serial port communication unit occupy an expansion slot.

Further, the controller adopts a dual-core processor, and a 1-path VGA display interface is led out to a first connector interface through a rear wiring; the 1-path gigabit Ethernet interface is led out to a second connector interface through a rear wiring; 4 paths of USB2.0 interfaces are led out to 4 third connector interfaces through the rear wiring; the first, second and third connector interfaces are all disposed on the right outlet board of the PXI chassis.

Further, the analog signal acquisition unit comprises an 8-channel differential input end, 16-bit resolution, 200KSa/s sampling rate and an input voltage range of +/-40V.

Further, the digital quantity control unit adopts a single-slot 3U board card and comprises a digital quantity input unit and a digital quantity output unit, wherein the digital quantity input unit comprises 18 digital quantity input channels, and the digital quantity output unit comprises 6 digital quantity output channels; and 6 paths of digital quantity input interfaces are led out to 6 fourth connector interfaces through BNC connectors and are arranged on an outlet board on the right side of the PXI case.

Further, the serial port communication unit adopts a four-port RS422 communication card, and 4 paths of RS422 serial interfaces are led out to 4 fifth connector interfaces through a DB9 connector and are arranged on an outlet board on the right side of the PXI case; the signal interface adapter adopts J599III series circular stainless steel passivation connectors.

Further, the state control unit is composed of a circuit connected with a button switch and an indicator lamp which are two-way, wherein the button switch and the indicator lamp are integrated into a whole, the normally open end of one switch is connected to one channel of the signal interface adapter, and the normally open end of the other switch is connected with the indicator lamp; the highest voltage born by the switch is DC125V and 2A; the highest voltage born by the indicator lamp is DC5V and 1A; the 2-position switch is connected through a mechanical connecting rod, and an indicator lamp on the switch is arranged on the front side panel of the PXI case.

Compared with the prior art, the utility model has at least one of the following beneficial effects:

1. the measurement and control platform has the advantages of small volume, compact structure, reasonable layout and modularized functional board card, realizes the multi-place and multi-platform use of the measurement and control platform, and is flexible to use.

2. The button switch of the state control unit is integrated with the indicator lamp, so that the device is small in size and convenient to install and use. The switch is pressed down, the radar is turned on, and the indicator light is turned on. The mounting position is selected below the left side of the front panel display, the space of the front panel corner is fully utilized, and the button switch is convenient to operate and observe the state of the indicator lamp and the display content of the display. During testing, the switch can be timely disconnected when abnormality is found, so that convenience, accuracy and safety of operation are improved.

In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.

FIG. 1 is a schematic diagram of the internal structure of a rear cover of a case opened by a portable radar measurement and control platform in an embodiment of the utility model;

FIG. 2 is a schematic front view of a portable radar measurement and control platform according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the right side of the portable radar measurement and control platform according to the embodiment of the utility model;

FIG. 4 is a schematic diagram of the left side of the portable radar measurement and control platform according to the embodiment of the utility model;

FIG. 5 is a schematic diagram of a state control unit according to an embodiment of the present utility model;

reference numerals:

1-PXI chassis; 2-a measurement and control functional unit; 3-PXI power supply; 4-two-way power supply; 5-an analog signal acquisition unit; 6-a digital quantity control unit; 7-serial port communication units; 8-a controller; 9-touch control display screen; 10-a state control unit; 11-a signal interface adapter; 12-a power switch; 13-a power input interface connector; 14-a first connector interface; 15-a second connector interface; 16-a third connector interface; 17-fourth connector interface; 18-a fifth connector interface; 19-heat dissipation holes.

Detailed Description

Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the utility model, and are not intended to limit the scope of the utility model.

The utility model discloses a portable radar measurement and control platform, which comprises a PXI case 1, a measurement and control function unit 2, a state control unit 10, a PXI power supply 3 and a two-way power supply 4 which are arranged in the PXI case, and a signal interface adapter 11 arranged on an outlet board on the right side of the PXI case, wherein the PXI case is provided with a signal interface adapter; the measurement and control functional unit 2 adopts a PXI bus backboard which is connected with the PXI power supply 3; the two-way power supply 4 is connected with the state control unit 10, the state control unit 10 and the measurement and control functional unit 2 are connected to the signal interface adapter 11, and the signal interface adapter 11 is connected with the radar to be tested.

The PXI chassis 1 of the portable radar measurement and control platform of the present utility model has a volume W (width) ×d (depth) ×h (height) =430 mm×340mm×285mm, and is moderate in size and convenient to transport. In order to facilitate human-computer interaction, a touch display screen 9 is arranged on the front side panel of the PXI case.

Further, a power switch 12 and a power input interface connector 13 are also provided on the right outlet board of the PXI chassis.

As shown in fig. 4, a radiating hole 19 is provided on the left panel of the PXI chassis, and the radiating hole 19 is formed by arranging a plurality of round holes into a rectangular shape.

It should be noted that, the measurement and control functional unit 2 is constructed based on a PXI test bus, and a PXI bus back board is adopted, and the PXI bus back board is connected with the PXI power supply 3, and the measurement and control functional unit 2 includes: the controller 8, the analog signal acquisition unit 5, the digital quantity control unit 6 and the serial port communication unit 7 are designed according to PXI size specifications. The measurement and control functional unit controls the PXI power supply to work, controls the internal functional unit to realize the test function, and completes the collection and storage functions of radar signals through RS422 serial communication.

Further, the PXI bus backboard adopts a customized 8-slot, 8 standard 3U PXI/CPCI slots, including 1 system slot and 7 expansion slots; wherein, the controller 8 occupies a system slot, and the analog signal acquisition unit 5, the digital quantity control unit 6 and the serial port communication unit 7 occupy an expansion slot.

The controller 8 in the measurement and control functional unit 2 adopts a dual-core processor, which comprises: the 1-path VGA display interface is led out to the first connector interface 14 through a rear wiring; the 1-path gigabit Ethernet interface is led out to the second connector interface 15 through the back wiring; the 4-path USB2.0 interface is led out to 4 third connector interfaces 16 through the rear wiring; the first, second and

third connector interfaces

14, 15 and 16 are all disposed on the right outlet board of the PXI chassis.

Preferably, the controller employs dual Core Intel Core ^TM i7-3555LE processor; the dominant frequency is 2.5GHz; on-board 4GB DDR3 1600MHz with ECC function (Error Checking and Correcting, error checking and correction); the external memory is a 1T hard disk or a 256G CF card.

The analog signal acquisition unit 5 in the measurement and control functional unit 2 is used for acquiring analog quantity signals of the measured radar, monitors the analog quantity signals isolated by the ground wire with slower change through software in the controller, comprises an 8-channel differential input end, a 16-bit resolution, a 200KSa/s sampling rate, an input voltage range of +/-40V, and optional gain of each channel, and comprises: 0.5, 1, 10 and 40.

Illustratively, the conditioning circuit in the analog signal acquisition unit 5 uses an OP07 operational amplifier, the analog-to-digital conversion chip employs an AD7606, and the FPGA employs an XC7a100T.

The digital quantity control unit 6 in the measurement and control functional unit 2 comprises a digital quantity input unit and a digital quantity output unit; the digital quantity input unit is used for inputting a digital quantity signal of the radar to be tested, and the digital quantity output unit is used for outputting a digital quantity control signal to the radar to be tested. Wherein, the digital quantity input unit comprises 18 digital quantity input channels, and the input level range is: v (V) _OH The input current is more than or equal to 2.4V-7.5V, the input voltage is more than or equal to 5mA, the input voltage is converted by a jumper to be 24V-28.5V, the input current is more than or equal to 5mA, the digital quantity output unit comprises 3 digital quantity output channels, the output level range is 4.75V-5.25V, and the maximum output current is 24mA. The digital quantity control unit 6 is provided with 6 paths of digital quantity input interfaces which are led out to 6 fourth connector interfaces 17 through BNC connectors and are arranged on an outlet board on the right side of the PXI case.

Illustratively, the digital quantity control unit 6 employs a photo coupler HCPL0630 and the FPGA employs XC7A100T.

The serial port communication unit 7 in the measurement and control functional unit 2 adopts a four-port RS422 communication card, the communication speed reaches 3Mbps, and the baud rate can be set at will. The I/O addresses are automatically assigned by PXI plug and play functions. And 4 paths of RS422 serial interfaces are led out to 4 fifth connector interfaces 18 through DB9 connectors and are arranged on an outlet board on the right side of the PXI case. The serial port communication speed is fast, and stability is high, can satisfy 9600 bps's radar test demand completely.

Illustratively, serial communications unit 7 employs a MAX490 chip and the FPGA employs XC7A100T.

The state control unit 10 is formed by a circuit of a two-position two-way button switch and an indicator lamp, and is powered by the two-way power supply 4; the signal interface adapter is connected with the signal interface adapter through a cable, and the signal interface adapter is connected with the radar through a cable; the normally open end of the other switch is connected with an indicator lamp; the highest voltage born by the switch is DC125V,2A; the highest voltage born by the indicator lamp is DC5V and 1A. The 2-switch is connected through a mechanical connecting rod, and an indicator lamp on the switch is arranged on the front side panel of the PXI case.

As shown in fig. 5, the first path is set with an initial 28V voltage, the normally open end of the S1 switch is connected to one channel of the signal interface adapter 11, and outputs to the radar to be tested, the second path is set with a 5V voltage, and is connected with the normally closed end of the S2 switch, and the normally open end of the S2 switch is connected with an indicator lamp. The S1 switch and the S2 switch are connected through a mechanical connecting rod and act together. The normally closed end of the S1 switch is opened, the normally open end is closed, the 28V voltage born by the radar to be tested is closed, the normally open end of the S2 switch is closed, the 5V voltage is added to the indicator lamp, and the indicator lamp is lightened. The indicator light is used for indicating whether the radar to be tested is in an on state.

The PXI power supply 3 uses output voltages of 0 to 40V and output currents of 0 to 38A. Power supply operating temperature: 0-40 ℃, working humidity: 30% -85% relative humidity (no water accumulation).

The signal interface adapter 11 adopts J599III series environment-resistant high-density small round stainless steel passivation connectors, has higher reliability and reasonable structural design, and can effectively adapt to the environment. According to the interface definition, signal interface adapters are utilized to adapt to different functional units.

Compared with the prior art, the portable radar measurement and control platform of the embodiment has the advantages of small volume, compact structure, reasonable layout, modularization of functional boards, realization of multi-place and multi-platform use of the measurement and control platform and flexible use. The button switch of the state control unit is integrated with the indicator lamp, so that the device is small in size and convenient to install and use. The switch is pressed down, the radar is turned on, and the indicator light is turned on. The mounting position is selected below the left side of the front panel display, the space of the front panel corner is fully utilized, and the button switch is convenient to operate and observe the state of the indicator lamp and the display content of the display. During testing, the switch can be timely disconnected when abnormality is found, so that convenience, accuracy and safety of operation are improved.

It will be appreciated by those skilled in the art that the program/software involved in the controller, the analog signal acquisition unit, the digital quantity control unit and the serial communication unit in the measurement and control functional unit in the above embodiment is a method common to the prior art, and the present utility model does not involve any improvement in software. The utility model only needs to connect the devices with corresponding functions through the connection relation provided by the embodiment of the utility model, and the utility model does not relate to any improvement of program software. The connection between the hardware devices with the respective functions is realized by those skilled in the art using the prior art, and will not be described in detail herein.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims

1. The portable radar measurement and control platform is characterized by comprising a PXI case, a measurement and control function unit, a state control unit, a PXI power supply and a two-way power supply which are arranged in the PXI case, and a signal interface adapter arranged on an outlet board on the right side of the PXI case; the measurement and control functional unit adopts a PXI bus backboard which is connected with a PXI power supply; the two-way power supply is connected with the state control unit, the state control unit and the measurement and control functional unit are connected to the signal interface adapter, and the signal interface adapter is connected with the radar to be tested.

2. The portable radar measurement and control console of claim 1, wherein the PXI chassis left side panel is provided with a heat dissipation hole, and the heat dissipation hole is formed by arranging a plurality of round holes into a rectangular shape.

3. The portable radar measurement and control console of claim 1, wherein the PXI chassis front panel is provided with a touch display screen; and a power switch and a power input interface connector are also arranged on the right outlet board of the PXI case.

4. The portable radar measurement and control console of claim 1, wherein the PXI bus backplane employs custom 8 slots, including 1 system slot and 7 expansion slots.

5. The portable radar measurement and control station of claim 4, wherein the measurement and control functional unit comprises: the system comprises a controller, an analog signal acquisition unit, a digital quantity control unit and a serial port communication unit; the controller occupies a system slot, and the analog signal acquisition unit, the digital quantity control unit and the serial port communication unit occupy an expansion slot.

6. The portable radar measurement and control console of claim 5, wherein the controller employs a dual-core processor with a 1-way VGA display interface led out to the first connector interface via a back trace; the 1-path gigabit Ethernet interface is led out to a second connector interface through a rear wiring; 4 paths of USB2.0 interfaces are led out to 4 third connector interfaces through the rear wiring; the first, second and third connector interfaces are all disposed on the right outlet board of the PXI chassis.

7. The portable radar measurement and control console of claim 6, wherein the analog signal acquisition unit includes an 8-channel differential input, a 16-bit resolution, a 200KSa/s sampling rate, and an input voltage range of ±40v.

8. The portable radar measurement and control platform according to claim 6, wherein the digital quantity control unit adopts a single-slot-width 3U board card and comprises a digital quantity input unit and a digital quantity output unit, and the digital quantity input unit comprises 18 digital quantity input channels; the digital quantity output unit comprises 6 digital quantity output channels; and 6 paths of digital quantity input interfaces are led out to 6 fourth connector interfaces through BNC connectors and are arranged on an outlet board on the right side of the PXI case.

9. The portable radar measurement and control platform according to claim 6, wherein the serial port communication unit adopts a four-port RS422 communication card, and 4 paths of RS422 serial interfaces are led out to 4 fifth connector interfaces through a DB9 connector and are arranged on an outlet board on the right side of the PXI chassis; the signal interface adapter adopts J599III series circular stainless steel passivation connectors.

10. The portable radar measurement and control stand according to claim 1, wherein the state control unit is formed by a circuit connected with a button switch and an indicator lamp which are two-way, wherein the button switch and the indicator lamp are integrated into a whole, a normally open end of one switch is connected to one channel of the signal interface adapter, and a normally open end of the other switch is connected with the indicator lamp; the highest voltage born by the switch is DC125V and 2A; the highest voltage born by the indicator lamp is DC5V and 1A; the 2-position switch is connected through a mechanical connecting rod, and an indicator lamp on the switch is arranged on the front side panel of the PXI case.