CN110174669A - A kind of hand-held wall-through radar device - Google Patents
A kind of hand-held wall-through radar device Download PDFInfo
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- CN110174669A CN110174669A CN201910412325.3A CN201910412325A CN110174669A CN 110174669 A CN110174669 A CN 110174669A CN 201910412325 A CN201910412325 A CN 201910412325A CN 110174669 A CN110174669 A CN 110174669A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
- G01S13/723—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data
- G01S13/726—Multiple target tracking
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
- G01S13/888—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons through wall detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
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- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of hand-held wall-through radar devices, belong to field of radar, including radar host computer, charger and charging cable；The radar host computer includes Anneta module, radio-frequency module, signal processing and display control module, charge-discharge modules, casing；After radar host computer works on power, charging module is converted by voltage and provides required voltage to radio-frequency module and signal processing and display control module, after signal processing and display control module receive detection key information, it controls radio-frequency module and generates radar signal, launched by antenna, Anneta module receives echo-signal and is sent after radio-frequency module is handled to signal processing and display control module, by showing target information again after algorithm process；Hand-held wall-through radar of the present invention is small in size, light-weight, effective scope of detection is big, high sensitivity, precision are high, while having the advantage of multiple target detection and tracking, strong antijamming capability.
Description
Technology neighborhood
The invention belongs to field of radar, design through-wall radar field, specifically a kind of hand-held wall-through radar device.
Background technique
Through-wall detection radar (Through-wall detecting radar, TWDR) abbreviation through-wall radar is a kind of logical
Electromagnetic wave signal is crossed, wall or the equipment of other barrier rear area targets are detected.Through-wall radar is mainly used for special operations, anti-
The probably fields such as stability maintenance, rescue and relief work.The radar is mainly used for moving target and fine motion target after detection wall.Hand-held thunder through walls
It is required up to the features such as, high sensitivity, high precision big to light, small, portable, investigative range high.Hand-held thunder through walls at present
Up to being still unsatisfactory for small-sized requirement in weight and volume, investigative range is limited, sensitivity and precision are lower.
Summary of the invention
The present invention is still unsatisfactory for small-sized requirement, investigative range in weight and volume for existing hand-held wall-through radar
Limited, sensitivity and precision lower defect, disclose a kind of hand-held wall-through radar device, which can decay according to wall
Automatic adjusument rf gain, can moving-target and fine motion target after quick detection to solid brick wall, there is multiple target detection
With tracking ability, and precision is high.
The present invention is implemented as follows:
A kind of hand-held wall-through radar device, which is characterized in that the device includes radar host computer, charger and fills
Electrical cables；The radar host computer include Anneta module, radio-frequency module, signal processing and display control module, charge-discharge modules,
Casing；
The charge-discharge modules are connect with radio-frequency module, signal processing and display control module respectively；The signal
Processing is connect with display control module with radio-frequency module；Radio-frequency module is connect with Anneta module；After radar host computer works on power, fill
Electric module is converted by voltage and provides required voltage to radio-frequency module and signal processing and display control module, and signal is worked as
After processing and display control module receive detection key information, control radio-frequency module generates radar signal, is launched by antenna
It goes, Anneta module receives echo-signal and sent after radio-frequency module is handled to signal processing and display control module, passes through algorithm
Target information is shown by the OLED display screen that signal processing is arranged with display control module after processing.
The signal processing and display control module include master controller, Flash, sensor, OLED display screen and
Power supply control；The sensor includes temperature sensor, light sensor, gravity sensor (G-Sensor), by aforementioned
Component completes signal processing algorithm；The display screen has graphical display and number two kinds of display patterns of display, and passes through
Key switches graphical display and number two kinds of display patterns of display；Power supply, brightness, target fortune are respectively set on the display screen
Row/static detection；The switch of the power knob control power supply and detection；It is bright that the brightness button switches different display screens
Degree；The object run/static detection button is used for detection mode, i.e. operation/still-mode switching, at the signal
Linear frequency modulation continuous wave system is used in reason and display control module.
Further, the Anneta module receives the radar signal that radio-frequency module generates, and Anneta module is by radio-frequency module
The radar signal of generation is radiate, while receiving radar return；The radio-frequency module includes phaselocked loop, filter, mixing
Device, frequency multiplier, PA, A/D, control unit；The locking phase generates the baseband signal of radar under the control of a processor, through overmulling
Frequently, gone out after power amplification by aerial radiation；Unwanted frequency range and clutter are filtered out by the filter, required for selection
The signal of frequency range；Using frequency mixer radar signal is modulated or is demodulated to by fundamental frequency, by frequency multiplier to modulating
Radar signal carries out frequency upgrading, is promoted to radar working frequency range；The PA carries out power amplification to transmitting radar signal, right
Receives echo-signal carries out power amplification；The A/D is to carry out high-speed sampling to intermediate-freuqncy signal, converts analog signals into number
Word signal is sent into processor and carries out subsequent processing analysis；The function of control unit is that associated radio frequency device is initialized and matched
It sets, the timing of radar signal generates, acquisition device status information.
Further, the display screen uses 2.6 cun of OLED display screens of 320 × 240 resolution ratio.
Further, in the brightness button: brightness is adjusted by single keys presses circulation, brightness is divided into 5 grades, according to
Secondary to brighten, wherein one grade is automatic brightness adjustment, automatic brightness adjustment automatically adjusts screen intensity according to light sensor.
Further, the Processing Algorithm is divided into imaging, the several parts of moving-target detection and tracking；The imaging moiety
Pulse compression including FMCW echo-signal, i.e., carry out FFT to the if sampling data scanned every time, obtain one-dimensional range profile；
32 Range Profile equal resolution units in one CPI are carried out second order moving-target instruction processing by the moving-target detection,
Then FFT is again, and CFAR detection is done to each Doppler frequency, realizes moving-target detection；The tracking by away from
It is filtered from velocity variations, and target is associated.
Further, the charge-discharge modules include charging management chip, voltameter, power conversion chip, and described fills
Electric managing chip is connect with voltameter, power conversion chip respectively, is connect by 18650 batteries with charging management chip；It is described
Charge-discharge modules be that the charge and discharge of battery are managed, real-time detection environment temperature compensates battery capacity: working as ring
When border temperature is not suitable for charging, charge function is actively closed.
Further, the device has three kinds of standby, low-power consumption, detection operating modes, and three kinds of operating modes are changeable.
Further, work switching is embodied by user's interaction response figure, specific as follows:
User detects or cancels and detect by starting detection/stopping detection initiation, follows wherein detection is used with stopping logic
Ring mode；When user initiates detection under halted state, processor configures radio frequency first, exits radio frequency from battery saving mode；
Processor bring into operation radar data processing algorithm；
If detecting target at this time, processor driving screen start show radar target information, comprising target away from
From, the direction of motion, target type, quantity information, while showing current total detection execution time；
Cancelling detection, then configuration makes radio frequency enter battery saving mode first, and general processor exits Radar Algorithm, exits radar
Algorithm thread stops output radar target information；Display radar target information is removed, target range is removed and shows information, remove
Detection time shows information.
Further, gravity sensor built in the device can be rung according to different hand-held directions by brightness button
Screen intensity is answered to adjust, i.e., after right-hand man exchanges, brightness key is detected by key definition with detection/stopping is started according to right-hand man side
To exchange, i.e. brightness key is always the index finger location for holding direction, and starting detection/stopping detection key is always thumb position
It sets, no matter operator need to only remember in this way, left hand is held or the right hand is held: thumb position is to start detection/stopping detection key
, avoid confusion.
Single keys presses recycle to adjust brightness, and brightness is divided into 5 grades, successively brightens, wherein one grade is auto brightness tune
Section, automatic brightness adjustment automatically adjust screen intensity according to light sensor, different hand-held direction display screen automatic turnings,
Processor control whole system switches between standby, low-power consumption, detection mode.
The beneficial effect of the present invention compared to the prior art is:
Through-wall radar device of the present invention is due to using continuous wave system, so that volume greatly reduces with weight, is light-weight；And
And effective scope of detection is big, have detectivity height, fast response time, can quick detection to fine motion target, spy with high accuracy
Point；Radar host computer volume of the invention is less than 230mm × 100mm × 60mm, and weight is less than 500g, waterproofing grade IP67, can
It is charged by charger baby to radar host computer；
Can decay automatic adjusument rf gain according to wall, being capable of moving-target after quick detection to the solid brick wall of 37cm
With fine motion target, there is multiple target detection and tracking ability, three targets can be tracked simultaneously；Realize multiple target detection and tracking；
Through-wall radar device of the present invention have strong antijamming capability, system operatio are convenient, man-machine interface is friendly, can it is singlehanded into
Row holds operation, can decay automatic adjusument rf gain according to wall.
Detailed description of the invention
Fig. 1 is a kind of composition block diagram of hand-held wall-through radar device of the present invention；
Fig. 2 (a) is a kind of antenna radiation pattern of hand-held wall-through radar device of the present invention；
Fig. 2 (b) is a kind of antenna standing wave pattern of hand-held wall-through radar device of the present invention；
Fig. 3 is a kind of radio-frequency module system block diagram of hand-held wall-through radar device of the present invention；
Fig. 4 is a kind of signal processing of hand-held wall-through radar device of the present invention and display control module block diagram；
Fig. 5 is the graphic display interface in a kind of hand-held wall-through radar Installation practice of the present invention；
Fig. 6 is the digital display interfacial in a kind of hand-held wall-through radar Installation practice of the present invention；
Fig. 7 is a kind of algorithm process flow diagram of hand-held wall-through radar device of the present invention；
Fig. 8 is a kind of charge-discharge modules block diagram of hand-held wall-through radar device of the present invention；
Fig. 9 is a kind of user's interaction response block diagram of hand-held wall-through radar device of the present invention；
Figure 10 is a kind of pattern switching flow diagram of hand-held wall-through radar device of the present invention.
Specific embodiment
It is clear to keep the purpose of the present invention, technical solution and effect clearer, example is exemplified below to the present invention into one
Step is described in detail.It should be understood that specific implementation described herein is not intended to limit the present invention only to explain the present invention.
As shown in Figure 1, hand-held wall-through radar device of the present invention is made of radar host computer, charger and charging cable.
Wherein radar host computer includes Anneta module, radio-frequency module, signal processing and display control module, charge-discharge modules, casing.Antenna
The radar signal that radio-frequency module generates is radiate by module, while receiving radar return.Radio-frequency module contains radar signal
Generation, radar signal modulation /demodulation, signal amplification, filter, the acquisition of AD conversion data etc..Signal processing and display control module
Core processing computing unit is contained, whole system task operation, the calculating of radar signal algorithm, every logical process are responsible for and is shown
Show the information such as distance, the direction of radar detection.Charge-discharge modules include power supply generation, lithium battery charging, power protection etc..Specifically
Component it is as described below:
Anneta module: binding medium of the present invention stacks parasitic patch motivational techniques, stacks on conventional microstrip Antenna aperture
The medium of low-k greatly expands the bandwidth of antenna in medium upper layer additional stray patch, while reducing antenna
Area and thickness, so that antenna size and weight greatly reduce, shown in antenna radiation pattern such as Fig. 2 (a)；Antenna standing wave pattern such as Fig. 2
(b) shown in, by antenna standing wave pattern and antenna radiation pattern it can be seen that frequency is in 2.75GHz-3.17GHz, standing wave VSWR≤2, band
Wide 400MHz.Simulated gain is that 7.4dB@3GHz, 10dB bandwidth are respectively 127 °, 148 °.
Radio-frequency module: radio-frequency module includes phaselocked loop, filter, frequency mixer, frequency multiplier, PA, A/D, control unit, radio frequency
Modular system block diagram is as shown in Figure 3.Wherein phase locked looped function is to generate the baseband signal of radar under the control of a processor, is passed through
It is gone out after mixing, power amplification by aerial radiation.The function of filter is to filter out unwanted frequency range and clutter, required for selection
The signal of frequency range.The function of frequency mixer is that radar signal is modulated or is demodulated to by fundamental frequency.The function of frequency multiplier is pair
The radar signal modulated carries out frequency upgrading, is promoted to radar working frequency range.The function of PA is carried out to transmitting radar signal
Power amplification carries out power amplification to receives echo-signal.The function of A/D is to carry out high-speed sampling to intermediate-freuqncy signal, will be simulated
Signal is converted to digital signal and is sent into processor progress subsequent processing analysis.The function of control unit be to associated radio frequency device into
The timing of row initialization and configuration, radar signal generates, acquisition device status information.The major function of radio-frequency module is acquisition thunder
Up to echo data and carry out certain processing.
Signal processing and display control module design: signal processing and display control module include master controller, Flash,
Various kinds of sensors, OLED display screen and power supply control etc., as shown in figure 4, Flash, temperature sensor, display screen, motor, G-
Sensor, light sensor, energy supply control module, key are connect with master controller, and master controller is generic logic CPU, are patrolled
Processing is collected, external sensor data receives and processing, and Radar Algorithm realization shows content refresh.Flash is external ROM storage
Control caches radar intermediate state data.Temperature sensor is real-time monitoring battery compartment temperature, is provided for battery capacity detection
Temperature supplement.Display screen can provide user's operation feedback with displaying target state and sensing data.Motor can be grasped for user
Make vibrational feedback.G-Sensor: user judges that user movement situation judges using posture.Light sensor: conditions for equipment use
Illuminance acquisition.Energy supply control module: system switching machine control.Key: for receiving user operation instruction.The module mainly mentions
For product user logic control, display driving, realize Radar Algorithm, responsible and PERCOM peripheral communication.Realize hardware error inspection, input
Error code.Displaying target state and sensing data show device battery state, carry out low electricity prompting and charged state is aobvious
Show.Using 2.6 cun of OLED display screens of 320 × 240 resolution ratio, wide temperature characteristics and good anti-impact with -40 DEG C~+85 DEG C
The ability of swashing, it is low in energy consumption, with completely black to 8 grades of highlighted brightness regulations.There are two types of display patterns for tool: graphical display and number are aobvious
Show, as shown in Fig. 5~6,15 in Fig. 5 at black line indicate moving-target, the white line at 20 indicates static object.
Power supply, brightness, object run/static detection are respectively set on the display screen." power supply " button controls power supply
Switch and detection；" brightness " button switches different brightness of display screen；" object run/static detection " button is used for detection mode
The switching of (operation/static).3 buttons are directly connected with processor GPIO.
Processing Algorithm is divided into several parts: imaging, moving-target detection and tracking.Imaging moiety includes FMCW echo-signal
The if sampling data scanned every time are mainly carried out FFT, obtain one-dimensional range profile by pulse compression.Moving-target is detected one
32 Range Profile equal resolution units in a CPI carry out the instruction of second order moving-target (MTI) processing, are then FFT again, and right
Each Doppler frequency is done CFAR detection (CFAR), realizes moving-target detection.Tracking is carried out by adjusting the distance with velocity variations
Filtering, and target is associated, it is further reduced because of false target caused by multipath, and improve the accurate of Population size estimation
Property, algorithm process process is as shown in Figure 7.
Charge-discharge modules: charge-discharge modules include charging management chip, voltameter, power conversion chip etc., such as Fig. 8 institute
Show.The module major function is managed to the charge and discharge of 18650 batteries, real-time detection environment temperature, to battery capacity into
Row compensation.When environment temperature is not suitable for charging, charge function is actively closed.
User's interaction response and pattern switching: user's interaction response is as shown in Figure 9.User initiates to visit by way of key
Detection is surveyed or cancels, wherein detection uses endless form with logic is stopped.When user initiates detection, processor under halted state
Radio frequency is configured first, exits radio frequency from battery saving mode.Processor bring into operation radar data processing algorithm.If at this time
Target is detected, the screen of processor driving starts to show radar target information, distance, the direction of motion, target comprising target
The information such as type, quantity, while showing that current total detection executes the time.
Cancelling detection, then configuration makes radio frequency enter battery saving mode first, and general processor exits Radar Algorithm, exits radar
Algorithm thread stops output radar target information.Display radar target information is removed, target range is removed and shows information, remove
Detection time shows information.
Gravity sensor built in the device can be pressed according to different hand-held directions (right-hand man holds direction) by difference
Key comes response screen brightness regulation (after i.e. right-hand man exchanges, keypress function exchanges therewith key relative position and automatically switched),
Single keys presses recycle to adjust brightness, and brightness is divided into 5 grades, successively brightens, wherein one grade is automatic brightness adjustment, it is automatic bright
Degree, which is adjusted, automatically adjusts screen intensity according to light sensor.Different hand-held direction display screen automatic turnings.
Processor control whole system switches between standby, low-power consumption, detection mode.Process flow is as shown in Figure 10,
After user presses power button, system is in standby mode, starts to detect key if pressing, switches to detection mode,
If long time no operations switch to low-power consumption mode；Under low-power consumption mode, presses and start to detect key, cut
It changes detection mode into, presses brightness regulation key, switch to standby mode；Under detection mode, stopping detection key is pressed, then
Switch to standby mode；Under standby mode, low-power consumption mode, detection mode either mode, by shutdown key, can it shut down.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as of the invention
Protection scope.
Claims (10)
1. a kind of hand-held wall-through radar device, which is characterized in that the device includes radar host computer, charger and charging
Cable；The radar host computer includes Anneta module, radio-frequency module, signal processing and display control module, charge-discharge modules, machine
Shell；
The charge-discharge modules are connect with radio-frequency module, signal processing and display control module respectively；The signal processing
It is connect with display control module with radio-frequency module；Radio-frequency module is connect with Anneta module；
After radar host computer works on power, charging module is converted by voltage to radio-frequency module and signal processing and display control mould
Voltage required for block provides, when signal processing and display control module receive after detecting key information, control radio-frequency module is produced
Raw radar signal, is launched, Anneta module receives echo-signal and send after radio-frequency module is handled to signal by antenna
Reason and display control module, by showing target information again after algorithm process；
The signal processing and display control module includes master controller, Flash, sensor, OLED display screen and power supply
Control, completes signal processing algorithm by above-mentioned parts；The display screen has two kinds of graphical display and number display aobvious
Show mode, and graphical display and number two kinds of display patterns of display are switched by key；Electricity is respectively set on the display screen
Source, brightness, object run/static detection；The switch of the power knob control power supply and detection；The brightness button is cut
Change different brightness of display screen；
The object run/static detection button is used for detection mode, i.e. operation/still-mode switching, the signal
Linear frequency modulation continuous wave system is used in processing and display control module.
2. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that the Anneta module receives
The radar signal that radio-frequency module generates, and the radar signal that radio-frequency module generates is radiate by Anneta module, while receiving thunder
Up to echo；The radio-frequency module includes phaselocked loop, filter, frequency mixer, frequency multiplier, PA, A/D, control unit；The lock
The baseband signal for mutually generating radar under the control of a processor, is gone out after mixing, power amplification by aerial radiation；Pass through institute
The filter stated filters out unwanted frequency range and clutter, the signal of frequency range required for choosing；Using frequency mixer to pass through fundamental frequency pair
Radar signal is modulated or demodulates, and carries out frequency upgrading to the radar signal modulated by frequency multiplier, is promoted to radar work
Make frequency range；The PA carries out power amplification to transmitting radar signal, carries out power amplification to receives echo-signal；The A/
D is to carry out high-speed sampling to intermediate-freuqncy signal, converts analog signals into digital signal and is sent into processor progress subsequent processing analysis；
The function of control unit is that initialization and configuration is carried out to associated radio frequency device, and the timing of radar signal generates, acquisition device shape
State information.
3. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that the display screen uses
2.6 cun of OLED display screens of 320 × 240 resolution ratio.
4. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that in the brightness button:
Brightness is adjusted by single keys presses circulation, brightness is divided into 5 grades, successively brightens, wherein one grade is automatic brightness adjustment, from
Dynamic brightness regulation automatically adjusts screen intensity according to light sensor.
5. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that the Processing Algorithm is divided into
Imaging, the several parts of moving-target detection and tracking；The imaging moiety includes the pulse compression of FMCW echo-signal, i.e., to every
The if sampling data of secondary scanning carry out FFT, obtain one-dimensional range profile；The moving-target is detected 32 in a CPI
Range Profile equal resolution unit carries out second order moving-target instruction processing, is then FFT again, and do perseverance to each Doppler frequency
Moving-target detection is realized in false-alarm detection；The tracking is filtered by adjusting the distance with velocity variations, and is closed to target
Connection.
6. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that the charge-discharge modules packet
Include charging management chip, voltameter, power conversion chip；The charge-discharge modules are managed to the charge and discharge of battery,
Real-time detection environment temperature, compensates battery capacity: when environment temperature is not suitable for charging, actively closing charge function.
7. any a kind of hand-held wall-through radar device according to claim 1~6, which is characterized in that the device
With three kinds of standby, low-power consumption, detection operating modes, three kinds of operating modes are changeable.
8. a kind of hand-held wall-through radar device according to claim 7, which is characterized in that the work switching passes through
User's interaction response figure embodies, specific as follows:
User initiates detection or cancels to detect by starting detection/stopping detection, wherein detection uses circulation side with logic is stopped
Formula；When user initiates detection under halted state, processor configures radio frequency first, exits radio frequency from battery saving mode；Processing
Device bring into operation radar data processing algorithm；
If detecting target at this time, the screen of processor driving starts to show radar target information, the distance comprising target, fortune
Dynamic direction, target type, quantity information, while showing that current total detection executes the time；
Cancelling detection, then configuration makes radio frequency enter battery saving mode first, and general processor exits Radar Algorithm, exits Radar Algorithm
Thread stops output radar target information；Display radar target information is removed, target range is removed and shows information, remove detection
Time showing information.
9. a kind of hand-held wall-through radar device according to claim 8, which is characterized in that gravity built in the device
Sensor, can be by brightness button come response screen brightness regulation, i.e., bright after right-hand man exchanges according to different hand-held directions
Degree key is detected by key definition with detection/stopping is started according to the exchange of right-hand man direction, i.e. brightness key is always to hold direction
Index finger location, starting detection/stopping detection key is always thumb position；Single keys presses recycle to adjust brightness, brightness point
It for 5 grades, successively brightens, wherein one grade is automatic brightness adjustment, automatic brightness adjustment is adjusted automatically according to light sensor
Screen intensity, different hand-held direction display screen automatic turnings are saved, processor controls whole system in standby, low-power consumption, detection
Switch between mode.
10. a kind of hand-held wall-through radar device according to claim 1, which is characterized in that the radar host computer body
Product is less than 230mm × 100mm × 60mm, and weight is less than 500g, waterproofing grade IP67, is carried out by charger baby to radar host computer
Charging.
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