CN218512620U

CN218512620U - Signal generating device for performance calibration of life detection radar

Info

Publication number: CN218512620U
Application number: CN202222607500.4U
Authority: CN
Inventors: 梁芷瑞
Original assignee: Hunan Zennze Technology Co ltd
Current assignee: Hunan Zennze Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-21
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a signal generating device for performance calibration of a life detection radar, which comprises a box body, a mounting bracket, a linear motion module, a reflecting plate and a counter; the battery is installed inside the box body, the mounting support is fixedly connected in the box body, the linear motion module is connected with the mounting support, the reflecting plate is detachably connected with a reciprocating motion component of the linear motion module, and the counter is arranged at the stroke tail end of the reciprocating motion component and used for recording the reciprocating motion frequency of the reflecting plate. The utility model discloses a thereby the motor drives the lead screw and rotates and drive reflecting plate reciprocating motion, operates steadily, avoids producing the noise, has avoided the vibration of big breadth simultaneously, guarantees that this device steadily places. The reflecting plate is detachably connected with the sliding block, and the sizes of the heart and the lung of people with different physiques can be simulated by replacing the reflecting plate with different areas; the reciprocating motion frequency of the reflecting plate is adjusted by controlling the rotating speed of the screw rod, so that the heart and lung vibration frequency of a human body under different physiological conditions can be simulated, and the high calibration sensitivity is ensured.

Description

Signal generating device for performance calibration of life detection radar

Technical Field

The utility model relates to a technical field is markd to life detection radar performance, specifically is a signal generator that life detection radar performance was markd.

Background

The life detection radar is mainly applied to disasters such as earthquake, debris flow and the like, and trapped survivors can be searched and positioned through the wall body. The life detection radar measures by using the cardiopulmonary vibration of a human body, and the capability of measuring a static target and a moving target is two important performance indexes. In the calibration test of the life detection radar performance, one or more experimenters usually stand still or walk, and the life detection radar partition wall detects to calibrate the radar performance. However, the height, the physique and the body state of the detected person influence the amplitude and the frequency of the micro-motion signals of the heart and lung of the detected person, the speed and the rule of the detected person are inconsistent when the detected person walks, data cannot be quantified, and the performance calibration of the radar is further influenced.

Chinese patent document [201110264738.5] discloses a signal calibration instrument vibration device for measuring the performance of a life detection radar, which receives a signal output by a driving circuit through a vibration body, converts the electric signal into mechanical vibration of a transmission rod, drives a front metal vibration surface to vibrate, and is used for measuring by the life detection radar, so that calibration is carried out. However, it has the following drawbacks: 1. the vibration amplitude of the metal vibration surface driven by the vibration body is large, large noise can be generated, and the metal vibration surface is not easy to stably place due to large vibration in the operation process, so that the test is inconvenient. 2. The vibration frequency of the metal vibration surface cannot be adjusted, and different heart and lung frequencies cannot be simulated; and the transmission rod is fixedly connected with the metal vibration surface, so that the transmission rod is difficult to replace, the transmitting areas of different radar waves cannot be realized, and the sizes of the heart and the lung of people with different physiques cannot be simulated, so that the calibration sensitivity is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can stably place and mark life detection radar performance that sensitivity is high and mark signal generation device.

The utility model provides a signal generating device for performance calibration of a life detection radar, which comprises a box body, a mounting bracket, a linear motion module, a reflecting plate and a counter; the battery is installed inside the box, the mounting bracket is fixedly connected in the box, the linear motion module is connected with the mounting bracket, the reflecting plate is detachably connected with a reciprocating motion component of the linear motion module, and the counter is arranged at the tail end of the stroke of the reciprocating motion component and used for recording the reciprocating motion frequency of the reflecting plate.

In one embodiment of the above technical solution, the linear motion module includes a motor, a lead screw, a slider, and a guide rail shaft, a rotating shaft of the motor is coaxially connected with the lead screw, the guide rail shaft is parallel to the lead screw, the slider is sleeved on the guide rail shaft and is in threaded connection with the lead screw, and the slider is driven to reciprocate by the rotation of the lead screw.

In an embodiment of the above technical scheme, the linear motion module further comprises a mounting plate and an adapter, the mounting plate is U-shaped, and the adapter is connected to the outer surface of the front side wall of the mounting plate and used for mounting the counter.

In an embodiment of the above technical solution, a rear side arm of the mounting plate is fixedly connected to a housing of the motor, a front side wall of the mounting plate is rotatably connected to the lead screw through a bearing, and the guide rail shaft is connected between a front side arm of the mounting plate and the motor housing.

In one embodiment of the above technical solution, a battery is mounted on a bottom plate of the box body, and a charging connector and a power supply connected by a wire for the battery are arranged on a side plate of the box body; and a circuit board is arranged on the mounting bracket.

In one embodiment of the above technical solution, the mounting bracket includes a fixing seat and a mounting seat, the fixing seat is U-shaped, and is reversely buckled on the battery and connected and fixed with the bottom plate of the box body, and the circuit board is mounted on the fixing seat; the mounting seat is U-shaped, and is reversely buckled on the circuit board and is fixedly connected with the fixed seat.

In an embodiment of the above technical solution, the mounting plate and the housing of the motor are connected to the mounting base by a fastener.

In one embodiment of the above technical solution, the area of the reflecting plate is 0.003 to 0.033mm ² And the frequency of the reciprocating motion of the reflecting plate is between 0.05 and 10 Hz.

In an embodiment of the above technical scheme, a switching fixture block is disposed at a bottom of a rear side surface of the reflection plate, the switching fixture block is U-shaped with a downward opening, and the reflection plate is connected with the reciprocating member through a fastener after being clamped by the switching fixture block.

The utility model discloses a thereby the motor drives the lead screw and rotates and drive slider and reflecting plate reciprocating motion, operates steadily, avoids producing the noise, has avoided vibration by a wide margin simultaneously, guarantees that this device steadily places, development of the test work of being convenient for. The reflecting plate is detachably connected with the sliding block, and the sizes of the heart and the lung of people with different physiques can be simulated by replacing the reflecting plate with different areas; the screw rod rotates to drive the reflecting plate to reciprocate, the reciprocating frequency of the reflecting plate can be adjusted by controlling the rotating speed of the screw rod, the cardiopulmonary vibration frequency under different physiological conditions of a human body can be simulated, and the high calibration sensitivity is ensured. Each part of this device is installed in the box, and the volume is less, stores and does not account for the space and removes the convenience during the test. In short, the utility model discloses can stably place, mark sensitivity height and be convenient for remove and the storage.

Drawings

Fig. 1 is a schematic view of an axial measurement structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of an axial structure inside the box body in fig. 1.

Fig. 3 is a schematic view of an axial structure at another angle in fig. 2.

FIG. 4 is a schematic view of an axial structure of the motor module shown in FIG. 2

Fig. 5 is a schematic view of an axial structure of the motor module and the reflection plate in fig. 2.

Detailed Description

As shown in fig. 1 to 5, the signal generating device for calibrating performance of a life detection radar disclosed in this embodiment includes a box, a battery, a fixing base, a circuit board, a mounting base, a motor module, a counter, and a reflection plate.

The box body 1 is a cubic box body, and the front side of the box body is a detachable box cover.

The battery 2 is installed on the bottom plate of the box body 1, and the battery 2 is arranged on the side plate of the box body 1 through a charging connector 21 and a power switch 22 which are connected through a lead.

The fixing seat 3 is U-shaped, and the tail end of a side arm of the fixing seat is bent outwards. The fixed seat 2 is reversely buckled on the battery 2, and the folded edge of the fixed seat is attached to the bottom plate of the box body 1 and is fixedly connected through a fastening piece.

The circuit board 4 is provided with a bluetooth module for connecting with a mobile phone or a tablet, and bluetooth connection is a conventional technology and is not described herein. The circuit board 4 is mounted on the fixing base 3.

The mounting seat 5 is U-shaped, and the tail end of a side arm of the mounting seat is bent outwards. The mount 5 straddles the circuit board 4. The hem of mount pad 5 is connected through the fastener with fixing base 3 and is constituted the installing support.

The motor module 6 comprises a motor 61, a screw 62, a slide block 63, a mounting plate 64, a guide rail shaft 65 and an adapter 66.

The casing of the motor 61 is provided with a heat sink, the rear end of the casing is provided with a heat radiation fan, and the rotating shaft at the front end of the casing is coaxially connected with the screw rod 62. The middle part of the sliding block 63 is provided with an internal thread hole as a driving hole, and the two sides of the sliding block are provided with guide holes. The driving hole of the slide block 63 is in threaded connection with the screw 62.

The mounting plate 64 is U-shaped, and a pair of rail shafts 65 are fixedly connected to the front arm thereof. The front side arm of the mounting plate 64 is rotatably connected with the screw 62 through a bearing, the rear side arm of the mounting plate 64 is fixedly connected with the housing of the motor 61, and the guide rail shaft 65 passes through the guide hole of the slide block 63 and then is fixedly connected with the housing of the motor 61.

The adapter 66 is provided with a mounting hole, and the adapter 66 is connected to the outer surface of the front side arm of the mounting plate 64.

When the motor module 6 is assembled, the mounting plate 64 is attached to the upper surface of the mounting base 5 and is fixedly connected through fastening, and the housing of the motor 61 is also fixedly connected with the mounting base 5 through fastening pieces.

It should be noted that other embodiments may employ an electric push rod module or a telescopic cylinder module instead of the motor module 6, and the reciprocating motion may be achieved as well.

The counter 7 is a microswitch counter which is mounted on the adapter 66 by fasteners.

The area of the reflecting plate 8 is 0.003 to 0.033mm ² Meanwhile, the sizes of the heart and the lung of people with different physical sizes are simulated by the reflecting plates 8 with different areas. The bottom of the back side of the reflection plate 8 is provided with an adapting fixture block 81. The adapting fixture block 81 is U-shaped, and the adapting fixture block 81 has a downward opening and is connected and fixed with the reflective plate 8 by a fastener.

When the reflection plate 8 is installed with the slide block 63, the lower end opening of the adapting latch 81 clamps the slide block 63 and is detachably connected with the slide block through a fastener. When the screw rod of the motor 61 rotates forwards and backwards, the slide block 63 drives the reflecting plate 8 to reciprocate along the guide rail shaft 65, and the frequency of the reciprocating motion of the reflecting plate 8 is controlled between 0.05 Hz and 10Hz by controlling the rotating speed of the screw rod.

It should be noted that the fixed seat 3 may also be provided with a sound 91 and a knocker 92, and the sound 91 simulates human voice and may be used for performance calibration of the audio life detector; when the knocker 92 runs, the vibrating rod reciprocates to knock the box body 1, and the performance calibration method can be used for performance calibration of the microseismic life detector. The installation sound 91 and the knocker 92 do not participate in performance calibration of the life detection radar.

Through the utility model discloses when carrying out life detection radar's performance calibration, concrete process is as follows:

the device is placed indoors in a static mode, and remote control is conducted on the device through wireless connection of the Bluetooth module on the circuit board and a mobile phone or a flat plate. The lead screw is just reversing to drive slider and reflecting plate and carry out sharp back and forth movement, and when the reflecting plate moved to the place ahead end of stroke, the counter can be touched to the reflecting plate, takes notes movement cycle's time, according to movement cycle's time adjustment motor speed, and then adjusts the movement frequency of reflecting plate, makes the frequency be close to the settlement parameter as far as possible, and the tester is at outdoor handheld life detection radar and is tested.

It should be noted that, in the performance calibration test for the static target, if the device is placed on a moving trolley, the performance calibration test for the moving target can be performed; if a plurality of devices are arranged indoors, the multi-target performance calibration test can be realized.

Claims

1. A signal generating device for calibrating performance of life detection radar is characterized in that: the device comprises a box body, a mounting bracket, a linear motion module, a reflecting plate and a counter; the battery is installed inside the box, the mounting bracket is fixedly connected in the box, the linear motion module is connected with the mounting bracket, the reflecting plate is detachably connected with a reciprocating motion component of the linear motion module, and the counter is arranged at the tail end of the stroke of the reciprocating motion component and used for recording the reciprocating motion frequency of the reflecting plate.

2. The life detection radar performance calibration signal generating apparatus of claim 1, wherein: the linear motion module comprises a motor, a screw rod, a sliding block and a guide rail shaft, a rotating shaft of the motor is coaxially connected with the screw rod, the guide rail shaft is parallel to the screw rod, the sliding block is sleeved on the guide rail shaft and is in threaded connection with the screw rod, and the sliding block is driven to reciprocate through rotation of the screw rod.

3. The life detection radar performance calibration signal generating apparatus of claim 2, wherein: the linear motion module further comprises a mounting plate and an adapter, the mounting plate is U-shaped, and the adapter is connected to the outer surface of the front side wall of the mounting plate and used for mounting the counter.

4. The life detection radar performance calibration signal generating apparatus of claim 3, wherein: the rear side arm of mounting panel and the casing fixed connection of motor, its preceding lateral wall with the lead screw passes through bearing rotatable coupling, guide rail shaft connects between the front side arm of mounting panel and motor casing.

5. The life detection radar performance calibration signal generating apparatus of claim 4, wherein: a battery is arranged on a bottom plate of the box body, and a charging connector and a power supply which are connected through a wire are arranged on a side plate of the box body; and a circuit board is arranged on the mounting bracket.

6. The life detection radar performance calibration signal generating apparatus of claim 5, wherein: the mounting bracket comprises a fixed seat and a mounting seat, the fixed seat is U-shaped, is reversely buckled on the battery and is fixedly connected with the bottom plate of the box body, and the circuit board is mounted on the fixed seat; the mounting seat is U-shaped, and is reversely buckled on the circuit board and is fixedly connected with the fixed seat.

7. The life detection radar performance calibration signal generating device of claim 6, wherein: the mounting plate and the shell of the motor are connected to the mounting seat through fasteners.

8. The life detection radar performance calibrated signal generating apparatus of claim 1, wherein: the area of the reflecting plate is 0.003 to 0.033mm ² And the frequency of the reciprocating motion of the reflecting plate is between 0.05 and 10 Hz.

9. The life detection radar performance calibrated signal generating apparatus of claim 1, wherein: the bottom of the rear side face of the reflecting plate is provided with a switching clamping block, the switching clamping block is in a U shape with an opening facing downwards, and the reflecting plate is connected with the reciprocating member through a fastener after being clamped by the switching clamping block.