CN106533486A - 2.4 GHz handheld nonlinear node detector - Google Patents
2.4 GHz handheld nonlinear node detector Download PDFInfo
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- CN106533486A CN106533486A CN201510583914.XA CN201510583914A CN106533486A CN 106533486 A CN106533486 A CN 106533486A CN 201510583914 A CN201510583914 A CN 201510583914A CN 106533486 A CN106533486 A CN 106533486A
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Abstract
The invention discloses a 2.4 GHz handheld nonlinear node detector, comprising a host, a rotating shaft and a handle. The host comprises a transmitter, a 4.8 GHz receiver, a 7.2 GHz receiver, a controller, a display screen, a lowpass filter, a 4.8 GHz bandpass filter, a 7.2 GHz bandpass filter, a 2.4 GHz antenna, a 4.8 GHz antenna and a 7.2 GHz antenna. The detector has the advantages that the detector is small and compact in size and light and convenient in usage and has a detection result judgment function. The transmitting frequency of the detector can be improved to 2.4 GHz. The detection performance is greatly improved. The detector has pulse transmitting and automatic power adjusting functions. The power consumption can be reduced, and the detection effectiveness also can be improved. According to the detector, idle channels can be automatically searched, surrounding electromagnetic interference can be kept away, and the accuracy of detecting an electronic target is improved.
Description
Technical field
The present invention relates to a kind of 2.4GHz hand-helds nonlinear node detector, belong to that safety check is explosive and technology is detectd
Examine technical field.
Background technology
At present, nonlinear node detector is used for detecting the electronic installation containing semiconductor nonlinear node.Half
Conductor node is present in diode, triode, and diode, triode are the bases for constituting electronic circuit
This element, is widely used on various electronic installations.Therefore, can just be judged whether by detecting semiconductor node
There is electronic installation.The principle of nonlinear node detector is to go irradiation one with the sufficiently large electromagnetic wave of power
Individual nonlinear node, can detect the harmonic signal of the former transmission signal of nonlinear node radiation.Non-linear knot
Point probe determines whether there is nonlinear node by detecting harmonic components, and according to the width of harmonic signal
Spend the type to judge nonlinear node.When nonlinear node detector launches a certain frequency signal, receive
Machine starts to receive the secondary and harmonic signal of tranmitting frequency.If detecting secondary or harmonic signal,
There is nonlinear node in expression.In addition to semiconductor node, many nonlinear nodes be present in electronic installation it
Outward, the biometallic joint that such as metal oxide is formed, and these nodes do not represent electronic installation, so area
The type for dividing nonlinear node is also to have.By detecting and comparing the intensity of secondary and harmonic signal,
Can determine that the type of two kinds of nonlinear nodes.The second harmonic of semiconductor node radiation is relatively strong, and three times humorous
Ripple is relatively weak.And the triple-frequency harmonics of biometallic joint radiation is relatively strong, second harmonic is relatively weak.Non-thread
The main application of property node detector is to detect and find out hiding electronic installation.Can rapidly detect and position
Electronic installation containing semiconductor element, such as tapping device, mobile phone, number on body of wall, office furniture are interior and personal
Code-phase machine, recording pen, moreover it is possible to which detection checks the explosive with electronic igniting device.Be suitable for airport,
The safety in all kinds of key places of station, government, military organs and secrecy meeting and explosion-proof check.
However, traditional existing nonlinear node detector there is also some shortcomings, such as structure bulky,
Volume is big, weight is big, uses to long-time, is all greatly test to the arm strength and muscle power of operator.First
Or being connected by heavy expansion link between the antenna and main frame of front nonlinear node detector, or even
Wiring is directly exposed to outside main frame, and structure design is not quite reasonable.And previous nonlinear node detector
Minimum length during folding and unfolding is 45 centimetres, generally more than 80 centimetres of the length under working condition, and weight generally surpasses
2 kilograms are crossed, volume is big, weight is big, used not light enough.
Existing nonlinear node detector is required for the class of nonlinear node of the user oneself to judge to detect
Type, result of detection show not directly perceived enough.The result of detection of nonlinear node detector mostly adopts two kinds at present
Showing, such as one green LED lamppost and a red LED lamppost are represented and are visited the LED post of color respectively
The secondary and harmonic signal intensity of the nonlinear node radiation for measuring, and the more expression phases of the bright number of lamp
Answer harmonic wave intensity stronger.User needs the intensity of and harmonic signal secondary by comparison, that is, two row LED
The number of lamppost bright light is how much judging that the nonlinear node for detecting is semiconductor node or biometallic joint.
The content of the invention
It is an object of the invention to provide a kind of 2.4GHz hand-helds that can overcome above-mentioned technical problem are non-linear
Node detector, the present invention is for hidden electronic installation of the detection containing semiconductor node.
The present invention includes：The main frame that is sequentially connected, rotating shaft, handle, the rotating shaft connection main frame and handle,
Have the wire of circuit in the main self-contained circuit of connection and handle inside the rotating shaft, be provided with the handle switch,
Rechargeable battery, button, loudspeaker.
The main frame include emitter, 4.8GHz receivers, 7.2GHz receivers, controller, display screen,
Low pass filter, 4.8GHz bandpass filters, 7.2GHz bandpass filters, 2.4GHz antennas, 4.8GHz
Antenna and 7.2GHz antennas；The 2.4GHz antennas, low pass filter, emitter, controller connect successively
Connect；The 4.8GHz antennas, 4.8GHz bandpass filters, 4.8GHz receivers, controller are sequentially connected；
The 7.2GHz antennas, 7.2GHz bandpass filters, 7.2GHz receivers, controller are sequentially connected；Institute
State controller to be connected with display screen；The controller is connected with button, rechargeable battery, loudspeaker；It is described to press
Key is connected with switch.
The emitter includes：Single-chip microcomputer, amplifier, digital frequency synthesizer, programmable attenuator, filtering
Device, power amplifier, final amplifier；It is the single-chip microcomputer, amplifier, digital frequency synthesizer, program control
Attenuator, wave filter, power amplifier, final amplifier, low pass filter, 2.4GHz antennas connect successively
Connect；The single-chip microcomputer, digital frequency synthesizer, programmable attenuator, power amplifier, final amplifier point
It is not connected with controller.
The 4.8GHz receivers include：Low-noise amplifier, attenuator, frequency mixer, intermediate frequency amplifier,
Intermediate-frequency filter, demodulator, single-chip microcomputer, phaselocked loop, voltage controlled oscillator, amplifier；Described 4.8GHz days
Line, 4.8GHz bandpass filters, low-noise amplifier, attenuator, frequency mixer, intermediate frequency amplifier, intermediate frequency
Wave filter, demodulator, controller are sequentially connected；The single-chip microcomputer is connected with attenuator, phaselocked loop, controller
Connect；The controller, phaselocked loop, voltage controlled oscillator, amplifier, frequency mixer are sequentially connected.
The present invention includes 4.8GHz receivers and 7.2GHz receivers the two receivers；The 7.2GHz connects
Receipts machine is identical with the circuit structure of the 4.8GHz receivers.The 4.8GHz receivers and the 7.2GHz
The receiving sensitivity of receiver can be adjusted.
The emitter has impulse ejection and continuous wave transmitting both of which.
The present invention includes 2.4GHz antennas, 4.8GHz antennas and 7.2GHz antennas these three antennas；It is described
2.4GHz antennas, the 4.8GHz antennas and the 7.2GHz antennas use micro-strip circular polarized antenna.
The emitter is used for producing transmission signal；The 2.4GHz antennas are used for radiation-emitting signal；It is described
Low pass filter connects emitter and 2.4GHz antennas, and the low pass filter is used for filtering emitter itself product
Raw second harmonic signal and harmonic signal disturb to be received with the harmonic signal for preventing emitter generation
Harmonic signal；The 4.8GHz antennas are used for the second harmonic letter of the transmission signal for receiving nonlinear node radiation
Number；The 4.8GHz receivers are for carrying out detection, solution to the second harmonic signal that 4.8GHz antennas are received
Adjust to obtain characterizing the instruction level of second harmonic signal intensity；The 4.8GHz bandpass filters are used for connecting
4.8GHz receivers and 4.8GHz antennas, prevent transmission signal from entering 4.8GHz receivers；The 7.2GHz
Antenna, for receiving the harmonic signal of the transmission signal of nonlinear node radiation；
The 7.2GHz receivers are for carrying out detection, solution to the harmonic signal that 7.2GHz antennas are received
Adjust, obtain characterizing the instruction level of harmonic signal intensity；The 7.2GHz bandpass filters are used for connecting
7.2GHz receivers and 7.2GHz antennas, prevent transmission signal from entering 7.2GHz receivers；The display screen,
For showing transmission power size, the second harmonic signal intensity for receiving, harmonic signal intensity and detection
To the type of nonlinear node.The controller for button, emitter, 4.8GHz receivers, 7.2GHz
Serial communication between receiver, display screen, for receiving the control command of button, controls whole detector
Frequency conversion, transmission power adjustment and receiver sensitivity adjust；Read secondary and harmonic signal
Intensity, send display screen to show after sampled and data processing；When detecting nonlinear node, provide sound and carry
Show signal；
Switch, rechargeable battery, button, loudspeaker are installed in the handle；It is described to switch for supplying user
Open/close the detector of the present invention；The rechargeable battery as detector power supply for each circuit module
Power supply；The button is used for selecting corresponding detection mode, regulating frequency and watt level, change for user
Receiver sensitivity；The loudspeaker is for when nonlinear node is detected, controller drive the speaker is sent out
Go out voice signal object is detected to inform user.
It is an advantage of the invention that compact it is compact, using it is light, with result of detection discrimination function.This
Bright can be main frame and handle two parts by the structure compresses of nonlinear node detector, make Hand held detection and set
It is standby.Integrated emitter, receiver, antenna, controller, display screen in main frame, button, switch, battery,
Loudspeaker is with reference on handle.Fix by a rotating shaft between main frame and handle, the present invention can be by detector
Tranmitting frequency is improved to 2.4GHz and greatly improves detection performance.The present invention can be in original display mode
Increase by two differentiation lamps, i.e., increase by two result of detections on a display screen and differentiate lamp, red, green differentiates lamp
Each one；When green differentiates that lamp is bright, represent that the nonlinear node for detecting is semiconductor node；It is red to differentiate
When lamp is bright, expression has detected biometallic joint；When the two does not all work, then it represents that do not detect any non-thread
Property node.The increase of two differentiation lamps, thus makes the display of result of detection more intuitively so as to no longer need to use
Family oneself is gone to judge.The present invention has impulse ejection and Automatic Power Adjust function, can not only reduce power consumption,
The validity of detection can also be improved.The present invention my automatic searching idle channel can hide surrounding environment electromagnetism
Interference, improves the accuracy of electronic target detection.
Description of the drawings
Fig. 1 is that a kind of circuit theory of 2.4GHz hand-helds nonlinear node detector of the present invention is illustrated
Figure；
Fig. 2 is that a kind of circuit of the emitter of 2.4GHz hand-helds nonlinear node detector of the present invention is former
Reason schematic diagram；
Fig. 3 is a kind of 4.8GHz receivers of 2.4GHz hand-helds nonlinear node detector of the present invention
Circuit theory schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the present invention are described in detail.
As shown in figure 1, the present invention includes：Main frame 2, rotating shaft 3 and handle 4.Main frame 2 include emitter 21,
4.8GHz receivers 22,7.2GHz receivers 23, controller 24, display screen 25, low pass filter 26,
4.8GHz bandpass filters 27,7.2GHz bandpass filters 28,2.4GHz antennas 29,4.8GHz antennas
210 and 7.2GHz antennas 211.Main frame 2 can also provide the circuit connection between circuit module and be electromagnetically shielded.
Controller 24 for button 43, emitter 21,4.8GHz receivers 22,7.2GHz receivers
23rd, the serial communication between display screen 25, control the frequency conversion of whole detector, transmission power adjustment with
And 4.8GHz receivers 22, the function of the adjustment of sensitivity of 7.2GHz receivers 23.Open switch 41 to open
The 2.4GHz hand-held nonlinear node detectors of the present invention are opened, and appropriate mode of operation are selected with button 43,
Controller 24 first reads the button operation represented by the rs 232 serial interface signal that the single-chip microcomputer in button 43 sends, then
Command adapted thereto is transmitted to into emitter 21,4.8GHz receivers 22 and 7.2GHz receivers 23, emitter
21st, 4.8GHz receivers 22 and 7.2GHz receivers 23 are started working after receiving instruction.Emitter 21 is produced
Raw transmission signal, low-pass filtered device 26 are radiate by 2.4GHz antennas 29 after filtering.4.8GHz antenna
210 second harmonic signals for receiving nonlinear node radiation, Jing after 4.8GHz bandpass filters 27 are filtered, send
To 22 detection of 4.8GHz receivers, demodulation, obtain characterizing the instruction level of second harmonic signal intensity.7.2GHz
Antenna 211 receives the harmonic signal of nonlinear node radiation, and Jing 7.2GHz bandpass filters 28 are filtered
Afterwards, 23 detection of 7.2GHz receivers, demodulation is delivered to, obtains characterizing the instruction electricity of harmonic signal intensity
It is flat.Controller 24 receives secondary and harmonic signal intensity and indicates level and carry out digital sample sum to which
Show according to display screen 25 is delivered to after process；When nonlinear node is detected, controller 24 will also provide sound
Message number is informed user to allow loudspeaker 44 to send the sound and detects object.
After the low-pass filtered device of transmission signal 26 that emitter 21 is produced, given off by 2.4GHz antennas 29
Go.The schematic block circuit diagram of the emitter 21 of the present invention is as shown in Figure 2.Single-chip microcomputer in emitter 21 is received
To after the serial ports instruction of controller 24, control digital frequency synthesizer and produce basic tranmitting frequency, transmitting frequency
Rate is adjustable in 2.4～2.42GHz.The reference frequency of digital frequency synthesizer is 10MHz, is carried by controller 24
For.After the amplified device of transmission signal of digital frequency synthesizer output amplifies, programmable attenuator, then Jing is delivered to
After filter filtering, deliver to power amplifier and final amplifier amplifies, after low-pass filtered device 26 is filtered,
Launched by 2.4GHz antennas 29.The power adjusting of emitter 21 changes programmable attenuator by controller
Realizing, power output changes between 1 milliwatt～4 watt program voltage.Emitter 21 can provide pulse and send out
Penetrate and launch both of which with continuous wave, the power supply electricity of power amplifier and final amplifier is controlled by controller 24
Press to realize, the dutycycle of impulse ejection can be flexibly set by controller 24.In the feelings that transmission power is constant
Under condition, impulse ejection can substantially reduce the power consumption of detector.
The present invention includes 4.8GHz receivers 22 and 7.2GHz receivers 23；4.8GHz receivers 22 are used for
Receive the second harmonic signal of nonlinear node radiation, receives frequency 4.8～4.84GHz of scope；7.2GHz connect
Receipts machine 23 is used for receiving the harmonic signal of nonlinear node radiation, receives frequency 7.2～7.26GHz of scope.
4.8GHz receivers 22,7.2GHz receivers 23 circuit theory it is identical, Fig. 3 gives 4.8GHz and connects
The schematic block circuit diagram of receipts machine 22, as shown in figure 3,4.8GHz antennas 210 are by the nonlinear node for receiving
The second harmonic signal of radiation delivers to 4.8GHz receivers 22 Jing after the filtering of 4.8GHz bandpass filters 27, connects
After the second harmonic signal of receipts is by low-noise amplifier amplification, Jing attenuators downconvert to intermediate frequency by frequency mixer
418MHz, then Jing after intermediate frequency amplifier amplifies, intermediate-frequency filter is filtered, deliver to demodulator detection, demodulation.
The local oscillation signal of mixing is produced by the Single-chip Controlling phaselocked loop and voltage controlled oscillator of 4.8GHz receivers 22,
Frequency mixer is delivered to Jing after the amplifier of 4.8GHz receivers 22 amplifies.The input reference frequency of phaselocked loop is
10MHz, uses identical reference frequency source with emitter 21, is provided by controller 24.In order to receive
The local oscillation signal frequency of 4.8～4.84GHz of second harmonic signal, phaselocked loop and voltage controlled oscillator output should be
4.382～4.422GHz so as to downconvert to 418MHz.The reception that controller 24 reads demodulator output is strong
Degree indicate level, which is sampled and data processing after, send display screen 25 to show.When receiving intensity is indicated
When level is higher than predetermined threshold value, expression detects nonlinear node, and controller 24 provides voice signal driving and raises
Sound device 44 sends the sound, informs that user detects object.The sensitivity of 4.8GHz receivers 22 is adjustable,
Corresponding serial ports instruction is provided by controller 24, after the single-chip microcomputer of 4.8GHz receivers 22 receives instruction, is changed
The program voltage of attenuator is realizing.
The operation principle of 7.2GHz receivers 23 is identical with 4.8GHz receivers 22, except phaselocked loop and pressure
Controlled oscillator is different outer, the device all same for being adopted.In order to receive 7.2～7.26GHz of harmonic signal,
The local oscillation signal frequency of the phaselocked loop of 7.2GHz receivers 23 and voltage controlled oscillator output should be
6.782～6.842GHz so as to downconvert to 418MHz.
The detector of the present invention uses three antennas：(1) 2.4GHz antennas 29 are used for radiation-emitting signal,
(2) 4.8GHz antennas 210 are used for receiving the second harmonic signal of nonlinear node radiation；(3)7.2GHz
Antenna 211 is used for receiving the harmonic signal of nonlinear node radiation, 2.4GHz antennas 29,4.8GHz days
Line 210,7.2GHz antennas 211 use micro-strip circular polarized antenna, and the micro-strip circular polarized antenna is plane
It is structure and small volume, lightweight.The micro-strip circular polarized antenna can receive the incoming wave of any polarization, its radiation
Wave energy is received by the antenna for arbitrarily polarizing, therefore transmitting-receiving adopts micro-strip circular polarized antenna and need not consider detection
The scanning angle of device is realizing more preferable Effect on Detecting.2.4GHz antennas 29,4.8GHz antennas 210,7.2GHz
Antenna 211 be covered each by 2.4～2.42GHz of tranmitting frequency, receive 4.8～4.84GHz of second harmonic frequency and
7.2～7.26GHz of third harmonic frequencies.
Low pass filter 26 connects emitter 21 and 2.4GHz antennas 29, and low pass filter 26 is used for filtering
Second harmonic signal and harmonic signal that emitter 21 itself is produced, prevent the humorous of the generation of emitter 21
Ripple signal disturbs harmonic signal to be received.22 He of the connection 4.8GHz of 4.8GHz bandpass filters 27 receivers
4.8GHz antennas 210 simultaneously prevent transmission signal from entering 4.8GHz receivers 22.7.2GHz bandpass filters 28
Connection 7.2GHz receivers 23 and 7.2GHz antennas 211, prevent transmission signal from entering 7.2GHz receivers
23。
One display screen 25 is housed on main frame 2, the transmission power size of current detector of the present invention can be shown
Indicate with result of detection.Display screen 25 is provided with three row LED posts and two LED differentiate lamp, such as one row
Yellow led lamppost, a row green LED lamppost and a row red LED lamppost, represent that transmission power is big respectively
Little, the second harmonic intensity of reception and triple-frequency harmonics intensity, red, green LED differentiate that lamp is each one.It is green
When color differentiates that lamp is bright, represent that the nonlinear node for detecting is semiconductor node；When redness differentiates that lamp is bright, table
Show that the present invention has detected biometallic joint；When the two does not all work, then it represents that do not detect any non-linear knot
Point.Two LED differentiate the increase of lamp, show result of detection more directly perceived, it is no longer necessary to which user oneself goes to sentence
Disconnected, this is also an innovation of the present invention.
Handle 4 is used for installing the switch 41 of the present invention, rechargeable battery 42, button 43, loudspeaker 44.Open
41 sides for being arranged on handle 4 are closed, and the detector of the present invention are turned on and off for user.Pressing on handle 4
Key 43 can be selected for user operation, the operation of the detector of the control present invention, i.e. button 43 on handle 4
Select corresponding detection mode, regulating frequency and watt level, change 4.8GHz receivers 22 and 7.2GHz to connect
The sensitivity of receipts machine 23.The built-in loudspeaker 44 of handle 4 can receive control when nonlinear node is detected
Voice signal that device 24 is given simultaneously sends the sound and has detected object to inform user.Rechargeable battery 42 is made
For the present invention detector power supply for the controller 24 in button 43, loudspeaker 44 and main frame 2,
Emitter 21,4.8GHz receivers 22,7.2GHz receivers 23 and display screen 25 are powered.
Rotating shaft 3 is used for connecting main frame 2 and handle 4 angle between fixed host computer 2 and handle 4.Rotating shaft 3
For wire hollow and that circuit in circuit and handle 4 in connection main frame 2 can be accommodated；Rotating shaft 3 can be adjusted
Angle between main frame 2 and handle 4 simultaneously facilitates user to use angle according to the operating habit of oneself adjustment；Adjustment
Rotating shaft 3, when main frame 2 and handle 4 are folded, the length of the present invention is minimum, only 20 centimetres.
After main frame 2 and handle 4 are fully deployed, the length of the present invention is maximum, but is also less than 40 centimetres；Compare
Traditional nonlinear node detector, only 0.75 kilogram of the weight of the present invention, and it is compact, lightweight,
User uses more light.The present invention has Automatic Power Adjust function, when the signal strength signal intensity for receiving
When indication signal reaches saturation, control circuit can reduce the power of transmission signal automatically；Work as received signal strength
When indication signal tends to noise level, controller 24 can increase the power of transmission signal automatically, make detecting structure
Become apparent from.It is of the invention can adjust automatically transmission power and when can greatly reduce detection user it is manually operated；This
Invention also has the function of hiding interfering frequency, and the tranmitting frequency of the present invention is wider, and the present invention can find one
The little frequency of electromagnetic interference come detect and substantially increase to electronic target detection accuracy.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art can be readily occurred in scope disclosed by the invention
Change or replacement, should all cover within the scope of the invention as claimed.
Claims (8)
1. a kind of 2.4GHz hand-helds nonlinear node detector, it is characterised in that include：It is sequentially connected
Main frame, rotating shaft, handle, rotating shaft connection main frame and handle, switch is installed in the handle, is filled
Battery, button, loudspeaker；
The main frame include emitter, 4.8GHz receivers, 7.2GHz receivers, controller, display screen,
Low pass filter, 4.8GHz bandpass filters, 7.2GHz bandpass filters, 2.4GHz antennas, 4.8GHz
Antenna and 7.2GHz antennas；The 2.4GHz antennas, low pass filter, emitter, controller connect successively
Connect；The 4.8GHz antennas, 4.8GHz bandpass filters, 4.8GHz receivers, controller are sequentially connected；
The 7.2GHz antennas, 7.2GHz bandpass filters, 7.2GHz receivers, controller are sequentially connected；Institute
State controller to be connected with display screen；The controller is connected with button, rechargeable battery, loudspeaker；It is described to press
Key is connected with switch.
2. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature
It is that the emitter includes：Single-chip microcomputer, amplifier, digital frequency synthesizer, programmable attenuator, filter
Ripple device, power amplifier, final amplifier；The single-chip microcomputer, amplifier, digital frequency synthesizer, journey
Control attenuator, wave filter, power amplifier, final amplifier, low pass filter, 2.4GHz antennas are successively
Connection；The single-chip microcomputer, digital frequency synthesizer, programmable attenuator, power amplifier, final amplifier
It is connected with controller respectively.
3. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature
It is that the 4.8GHz receivers include：Low-noise amplifier, attenuator, frequency mixer, intermediate frequency amplifier,
Intermediate-frequency filter, demodulator, single-chip microcomputer, phaselocked loop, voltage controlled oscillator, amplifier；Described 4.8GHz days
Line, 4.8GHz bandpass filters, low-noise amplifier, attenuator, frequency mixer, intermediate frequency amplifier, intermediate frequency
Wave filter, demodulator, controller are sequentially connected；The single-chip microcomputer is connected with attenuator, phaselocked loop, controller
Connect；The controller, phaselocked loop, voltage controlled oscillator, amplifier, frequency mixer are sequentially connected.
4. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature
It is the wire for having circuit in the main self-contained circuit of connection and handle inside the rotating shaft.
5. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature exist
In comprising 4.8GHz receivers and 7.2GHz receivers the two receivers；The 7.2GHz receivers with
The circuit structure of the 4.8GHz receivers is identical.
6. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature exist
In the emitter has impulse ejection and continuous wave transmitting both of which.
7. a kind of 2.4GHz hand-helds nonlinear node detector according to claim 1, its feature exist
In comprising 2.4GHz antennas, 4.8GHz antennas and 7.2GHz antennas these three antennas.
8. a kind of 2.4GHz hand-helds nonlinear node detection according to claim 1 or 7 any one
Device, it is characterised in that the 2.4GHz antennas, the 4.8GHz antennas and the 7.2GHz antennas make
Use micro-strip circular polarized antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583914.XA CN106533486A (en) | 2015-09-14 | 2015-09-14 | 2.4 GHz handheld nonlinear node detector |
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|---|---|---|---|
| CN201510583914.XA CN106533486A (en) | 2015-09-14 | 2015-09-14 | 2.4 GHz handheld nonlinear node detector |
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| CN110596781A (en) * | 2019-08-02 | 2019-12-20 | 张家界航空工业职业技术学院 | Metal detector |
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| CN113050181A (en) * | 2019-12-27 | 2021-06-29 | 上海普阅信息科技有限公司 | Time slot method-based nonlinear node detection system |
| CN113884987A (en) * | 2021-12-07 | 2022-01-04 | 岚图汽车科技有限公司 | Radar assembly, control method and vehicle |
| WO2022077328A1 (en) * | 2020-10-15 | 2022-04-21 | 深圳市安卫普科技有限公司 | Scanning-type non-linear node detection method and apparatus |
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| CN113050181A (en) * | 2019-12-27 | 2021-06-29 | 上海普阅信息科技有限公司 | Time slot method-based nonlinear node detection system |
| CN111060978A (en) * | 2020-01-17 | 2020-04-24 | 长春市泽安科技有限公司 | Large-area rapid detection composite node detection system and detection method |
| CN112327373A (en) * | 2020-09-22 | 2021-02-05 | 四川中物裕邦科技有限公司 | A safety inspection door for detecting |
| WO2022077328A1 (en) * | 2020-10-15 | 2022-04-21 | 深圳市安卫普科技有限公司 | Scanning-type non-linear node detection method and apparatus |
| CN113884987A (en) * | 2021-12-07 | 2022-01-04 | 岚图汽车科技有限公司 | Radar assembly, control method and vehicle |
| CN113884987B (en) * | 2021-12-07 | 2022-03-01 | 岚图汽车科技有限公司 | Radar assembly, control method and vehicle |
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