CN106908643A - A kind of probe, oscillograph, movement recognition system and method - Google Patents
A kind of probe, oscillograph, movement recognition system and method Download PDFInfo
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- CN106908643A CN106908643A CN201510977035.5A CN201510977035A CN106908643A CN 106908643 A CN106908643 A CN 106908643A CN 201510977035 A CN201510977035 A CN 201510977035A CN 106908643 A CN106908643 A CN 106908643A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0209—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form in numerical form
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06788—Hand-held or hand-manipulated probes, e.g. for oscilloscopes or for portable test instruments
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
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Abstract
The invention provides a kind of probe, oscillograph, movement recognition system and method, wherein the probe includes：Probe tip, signal buffer unit, coaxial signal line and BNC connector, the measured signal of probe tip collection by after the signal buffer unit buffered, via being transferred to oscillograph after the coaxial signal line and BNC connector；Characterized in that, the probe also includes：One acceleration transducer, the motion for sensing the probe, and the motion based on the probe produces the exercise data of the probe；One interface board, connects the acceleration transducer；One active probe interface, connects the interface board, the sensor interface for the exercise data to be sent to the oscillograph.The present invention can easily control oscillograph using user in the measured signal farther out of measuring distance oscillograph, show signal integrity, operated at oscillograph without be returned to.
Description
Technical field
The present invention relates to signal measurement and display field, more particularly to a kind of probe, oscillograph, movement recognition system and
Method.
Background technology
Oscillograph generally comprises a display screen, various buttons and knob, user as the instrument of observation electronic signal
Vertical sensitivity, vertical off setting, level sensitivity, the function such as triggering can be set by button and knob, make by
Survey signal waveform shown on a display screen with suitable amplitude and cycle stability, be easy to user to be observed and analyzed.
The input channel of oscillograph is typically connected by oscilloprobe or connecting line with measured signal, to obtain telecommunications
Number.Oscilloprobe is generally divided into passive probe and active probe from powered types；It is general from measured signal type
It is divided into voltage probe and current probe.
Passive probe is fairly simple, is typically made up of probe tip, capacitance-resistance attenuation network, coaxial line, BNC connector,
Connection is input into by the BNC of BNC connector and oscillograph.
Active probe generally comprises probe tip, active amplifier circuit, coaxial signal line, power supply signal line, BNC
Joint, interface board and probe composition, as shown in Figure 1.Wherein coaxial signal line and power supply signal line can be different
Both threads cable, or the composite cable of combination.Interface board and probe and BNC connector typically can also make one
Entirety, and the BNC and interface of oscillograph input are matched.Probe is used to detect measured signal, and amplifier will be by
Survey after signal is amplified or decays and export, output signal is defeated by coaxial signal line and BNC connector, and oscillograph
Enter passage connection, by oscillograph internal circuit, shown in oscillograph screen.Oscillograph by interface board and
Probe, there is provided the power supply and bias voltage of active probe, activated amplifier electricity is connected to by power supply signal line
Road, provides power supply and offset signal, so that its work to amplifier.
At present, the interface board of active probe and the function of probe be mainly power supply, bias voltage adjustment, probe identification,
Probe information communicates.Existing probe identification technology is usually that different resistance are set on probe interface plate, works as connection
During oscillograph, oscillograph is detected to resistance, and different probe type and probe attenuation ratios are mapped according to resistance value,
And the probe setting signal of oscillograph is set automatically.Probe info-communication function is generally used for high-end probe, is connect in probe
Memory or single-chip microcomputer are installed on oralia, for storing probe information, sequence number, calibration signal etc., work as connection
During probe, the processor on probe and oscillograph is communicated, the sequence number and calibration information of oscillograph identification probe,
And the output of analog channel and probe interface plate is set with this, make probe and oscilloscope analog channels operation in suitable shape
State.
Either passive probe or active probe, the function of existing oscilloprobe is only that measured signal is carried out
Detect, and transmit a signal to oscillograph and shown, and operational control cannot be carried out to oscillograph, it is necessary to user couple
Oscillograph is operated, and the waveform that display can just shown is optimal, generally there is following several situations：
(1) signal amplitude is improper, it is necessary to adjust oscillograph vertical sensitivity, makes the signal amplitude of display full of showing
Ripple device screen.
(2) signal deflects away from screen top or issues, it is necessary to adjust oscillograph vertical shift level, signal is all returned
To in the middle of screen.
(3) signal period of screen display is overstocked or excessively sparse, it is impossible to which complete observation signal is, it is necessary to adjust oscillography
Device level sensitivity, makes complete display one or more cycles of signal in screen, is conveniently used for observation analysis.
(4) signal cannot stablize display, it is necessary to adjust the Trigger Function of oscillograph, such as triggering mode, triggering level
Deng making signal stabilization trigger and be displayed on screen.
(5) other functions, such as automatic setting, single triggering.
During using existing oscillograph and probe, if necessary to regulation oscillograph, particularly adjust related to waveform vertical
When sensitivity, vertical off setting voltage, level sensitivity or triggering, user needs a hand hold transducer, by probe tip point
The contact measured signal of stabilization, another hand is operated to oscillograph, and human eye can look at oscillograph during due to operation,
Probe may lead to not be permanently connected to measured signal due to body displacement, or even probe tip may be smaller by spacing
Two signal short circuits, cause circuit-under-test failure, it is very inconvenient when using.
When measured signal is two signals, it is necessary to two hands of user hold probe different measured signals is surveyed
Examination, now if necessary to be operated to oscillograph, it is necessary to put down probe or request another person is assisted,
Or by the fixture of complex and expensive, in-convenience in use.
And the probe line length of existing oscilloprobe is more long, generally 1.5 meters or so, when probe to being tested farther out
When circuit is detected, the hand of user possibly cannot touch oscillograph, be at this moment accomplished by another person and assist operation oscillography
Device, or leave circuit-under-test oscillograph is operated, circuit-under-test then is detected again, it is also very when using
Easily.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of probe, oscillograph, movement recognition system and method.
One aspect of the present invention provides a kind of probe, and the probe includes：Probe tip, signal buffer unit, coaxial letter
Number line and BNC connector, the measured signal of the probe tip collection by after the signal buffer unit buffered,
Via being transferred to oscillograph after the coaxial signal line and BNC connector；The probe also includes：
One acceleration transducer, the motion for sensing the probe, and the motion based on the probe produces the spy
The exercise data of head；
One interface board, connects the acceleration transducer；
One active probe interface, connects the interface board, the biography for the exercise data to be sent to the oscillograph
Sensor interface.
In one embodiment, the motion of the probe includes：Motion or the probe of the probe in the case where user operates
With the motion that testee vibration is produced.
In one embodiment, when the acceleration transducer is single-axis acceleration sensors, the exercise data includes
Probe acceleration signal in the Z-axis direction, and/or the number of times and frequency being tapped, wherein institute of popping one's head in
State Z axis vertical with the plane residing for the single-axis acceleration sensors.
In one embodiment, when the acceleration transducer is double-axel acceleration sensor, the exercise data includes
Acceleration signal of the probe in X-axis and Y direction, and/or the number of times and frequency being tapped of popping one's head in,
The plane that wherein described X-axis and Y-axis determine is parallel with the plane residing for the acceleration transducer.
In one embodiment, when the acceleration transducer is 3-axis acceleration sensor, the exercise data includes
The acceleration signal of the probe on X-axis, Y-axis and the direction of principal axis of Z axis three, and/or it is described pop one's head in be tapped time
Number and frequency, wherein the plane that the X-axis and Y-axis determine is put down with the plane residing for the 3-axis acceleration sensor
OK, the Z axis are vertical with the plane residing for the 3-axis acceleration sensor.
In one embodiment, the 3-axis acceleration sensor is mems accelerometer.
Another aspect of the present invention additionally provides a kind of oscillograph, the exercise data for processing the probe, the oscillography
Device includes：BNC input ports, input amplifying unit, A/D converting units, waveform processing unit and display unit,
The BNC input ports receive the measured signal, then in turn through the input amplifying unit, A/D conversions
Shown into the display unit after unit, waveform processing unit；The oscillograph also includes：Acceleration sensing
Device interface, signal processing chip and control chip；Wherein,
The acceleration transducer interface is connected by the active probe interface with the probe, for receiving described adding
The exercise data that velocity sensor is produced；
The signal processing chip connects the acceleration transducer interface, and the exercise data is identified, and generates
Recognition result；
The control chip controls the oscillograph action according to the recognition result.
In one embodiment, the motion of the probe includes：Motion of the probe in the case where user operates；
The signal processing chip combines pre-stored gesture specifically for carrying out gesture identification to the exercise data
With the oscillograph control command mapping table corresponding control command of generation；
The control chip according to the control command specifically for controlling the oscillograph action.
In one embodiment, the motion of the probe includes：The motion that the probe is produced with testee vibration；
The signal processing chip by the exercise data specifically for being converted into electric signal；
The control chip is specifically for controlling electric signal described in the oscilloscope display.
In one embodiment, the oscillograph also includes a memory cell, for storing the gesture and oscillograph control
Command mapping table processed.
In one embodiment, the oscillograph also includes a signal processing unit, is connected to the acceleration transducer and connects
Between mouth and signal processing chip, when the exercise data is analog signal, for the analog signal to be converted to
Data signal.
Present invention also offers a kind of movement recognition system, the movement recognition system includes：Spy described at least one
Head and the oscillograph described in.
Another aspect of the present invention additionally provides a kind of motion recognition method, is applied to described movement recognition system, described
Motion recognition method includes：
The acceleration transducer of the probe senses the motion of the probe, and the generation of the motion based on the probe is described
The exercise data of probe；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result；
The control chip of the oscillograph controls the oscillograph action according to the recognition result.
In one embodiment, the motion of the probe includes：Motion of the probe in the case where user operates；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result, including：Institute
State signal processing chip carries out digital filtering, normalized successively to the exercise data, then to by normalizing
The exercise data for the treatment of carries out feature extraction, and using HMM to extracting the motion after feature
Data carry out gesture identification, and combine pre-stored gesture control life corresponding with the generation of oscillograph control command mapping table
Order；
The control chip of the oscillograph controls the oscillograph action according to the recognition result, including：It is described
Control chip controls the oscillograph action according to the control command.
In one embodiment, the motion of the probe includes：The motion that the probe is produced with testee vibration；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result, including：Institute
State signal processing chip and the exercise data is converted into electric signal；
The control chip of the oscillograph controls the oscillograph action according to the recognition result, including：It is described
Control chip controls electric signal described in the oscilloscope display.
The present invention can allow user by the function of operation oscillograph of popping one's head in, so that user only just can be same with one hand
When operation probe and oscillograph, another hand can take the other signal of another probe detection, or carry out record data
Deng activity, so as to avoid the difficulty that user operates probe and oscillograph to bring simultaneously.
The present invention can easily control oscillography using user in the measured signal farther out of measuring distance oscillograph
Device, shows signal integrity, operated at oscillograph without being returned to.And probe of the invention can also be right
Vibration signal is detected, and vibration signal is included on screen by the form of electric signal, can to motor, lathe,
Steel plate carries out flaw detection detection.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present invention, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing active probe；
Fig. 2 is the structural representation of embodiment of the present invention probe；
Fig. 3 is the structural representation of embodiment of the present invention oscillograph；
Fig. 4 is the schematic flow sheet of embodiment of the present invention motion recognition method；
Fig. 5 is the internal structure block diagram of embodiment of the present invention ADXL363.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Fig. 2 is the structural representation of embodiment of the present invention probe.As shown in Fig. 2 the probe include probe tip 11,
Signal buffer unit 12, coaxial signal line 13 and BNC connector 14, signal buffer unit 12 is by coaxial signal line
13 are connected to BNC connector 14, the BNC input ports connection of BNC connector 14 and oscillograph.Probe tip 11 is used
In detection measured signal, the measured signal of the detection of probe tip 11 is decayed or is amplified by signal buffer unit 12
After treatment, the analog channel of oscillograph is transferred to via coaxial signal line 13 and BNC connector 14, realizes probe
Detection function.
The probe also includes acceleration transducer 15, the active probe interface 17 of interface board 16 and, acceleration transducer
15 motions for sensing the probe, and the motion based on the probe produces the exercise data of the probe, interface board 16 to connect
Acceleration transducer 15 and active probe interface 17, above-mentioned exercise data is sent to by active probe interface 17
Oscillograph.In addition, active probe interface 17 also provides other letters that the power supply of probe and signal buffer unit 12 need
Number.Interface board 16 is mainly used in power supply, bias voltage adjustment, probe identification, the communication of probe information etc., in this hair
In bright, interface board 16 is additionally operable to transmit the exercise data that acceleration transducer 15 is sent.
Usually, the motion of above-mentioned probe can be motion, or probe of the probe in the case where user operates with quilt
The motion surveyed object vibration and produce.
Action of the present invention by sensing hand-held probe changes, and the exercise data of probe is fed back into oscillograph, passes through
Default gesture function corresponding relation, is correspondingly operated to oscillograph, with realize to vertical sensitivity, it is vertical partially
The adjustment of level, level sensitivity, triggering and other specification is put, measured signal is completely stably displayed in and is shown
On ripple device display screen.Also, probe of the invention can also be detected to testee vibration signal, will be vibrated
Signal is displayed on oscillograph by the form of electric signal, can be used for carrying out flaw detection detection to motor, lathe, steel plate.
At present, the volume very little of acceleration transducer, can generally be integrated into flat chip, use chip form
Acceleration transducer detection probe exercise data when, typically the plane according to residing for the chip determines space coordinates
System.
When above-mentioned acceleration transducer is single-axis acceleration sensors, for example from Z axis acceleration transducer (herein
Z axis refer to the axle vertical with the plane residing for single-axis acceleration sensors), when user's hand hold transducer along Z axis rotate
Or when brandishing up and down, Z axis acceleration transducer can with inductive probe along Z axis (probe body direction) rotation hand
Gesture, it is also possible to sense the gesture that user taps probe, then above-mentioned exercise data includes probe acceleration in the Z-axis direction
Degree signal, and the probe number of times being tapped and the frequency being tapped.When vibration signal is detected, visited to avoid damaging
Head point 11, need to remove probe tip 11, probe tip is against on testee and is measured, and this brief acceleration is passed
The vibration in the Z-axis direction of the sensing of sensor 15 testee, generates Z axis acceleration information.
When above-mentioned acceleration transducer is double-axel acceleration sensor, above-mentioned exercise data generally includes above-mentioned probe
Acceleration signal on acceleration signal in the X-axis direction and Y direction, and above-mentioned probe be tapped time
Number and the frequency being tapped, wherein residing for above-mentioned X-axis and the plane and the double-axel acceleration sensor of Y-axis determination
Plane is parallel, i.e., the plane that X-axis and Y-axis determine is not changeless, but with double-axel acceleration sensor institute
The sea level changes at place and change, no matter how user operates probe, plane determined by above-mentioned X-axis and Y-axis is permanent
Keep parallel with the plane residing for the chip of double-axel acceleration sensor.Similarly, double-axel acceleration sensor is being utilized
During detection vibration signal, to remove probe tip is against on testee after probe tip 11 and measure, now twin shaft
Acceleration transducer senses vibration of the testee in X-axis, Y direction, generates X-axis acceleration information and Y
Axle acceleration data.
When above-mentioned acceleration transducer selects 3-axis acceleration sensor, the gesture for tapping probe can be sensed, also may be used
To sense the gesture popped one's head in X-axis, Y-axis, Z-direction whipping, then above-mentioned exercise data includes what probe was tapped
The acceleration signal of number of times and frequency and probe on X-axis, Y-axis and the direction of principal axis of Z axis three.Wherein, above-mentioned X
The plane that axle and Y-axis determine is parallel with the plane residing for the 3-axis acceleration sensor, and Z axis are passed with the 3-axis acceleration
Plane residing for sensor is vertical.The plane that X-axis and Y-axis determine is not changeless, but with 3-axis acceleration
Sea level changes residing for sensor and change, no matter how user operates probe, above-mentioned X-axis and Y-axis are determined
Plane it is permanent keep parallel with the plane residing for the chip of 3-axis acceleration sensor, the permanent holding of Z axis and 3-axis acceleration
Plane residing for the chip of sensor is vertical.According to the frequency and number of times that tap probe, it is possible to achieve the beginning of oscillograph
The function such as identification gesture, automatic, triggering, according to the gesture in X-axis, Y-axis, Z-direction, it is possible to achieve oscillography
The vertical sensitivity of device, level sensitivity, the function of vertical off setting level adjustment, based on these functions, can meet
General oscilloscope operations, so as to measured signal understands be more completely shown on display screen.Similarly, three axles are being utilized
During acceleration transducer detection vibration signal, it is also desirable to probe tip is against on testee after removing probe tip 11
Measure, vibration of the now 3-axis acceleration sensor sensing testee in X-axis, Y-axis and Z-direction,
Generation X-axis acceleration information, Y-axis acceleration information and Z axis acceleration information.
The acceleration transducer used under above-mentioned three kinds of situations can be the acceleration transducer for exporting analog signal,
Can be the acceleration transducer of output digit signals, such as above-mentioned 3-axis acceleration sensor can use MEMS
Accelerometer, mems accelerometer can be readily integrated into probe inside, and MEMS due to small volume
Accelerometer output digit signals, can simplify the sensor signal treatment inside oscillograph.
Fig. 3 is the structural representation of embodiment of the present invention oscillograph.As shown in figure 3, the oscillograph includes：BNC
Input port 20, input amplifying unit 21, A/D converting units 22, waveform processing unit 23 and display unit 24,
The measured signal that the receiving transducer of BNC input ports 20 is sent, turns then in turn through input amplifying unit 21, A/D
Shown into display unit 24 after changing unit 22, waveform processing unit 23.Above-mentioned oscillograph also includes：Plus
Speed sensor interface 25, signal processing chip 26 and control chip 27.Acceleration transducer interface 25 passes through 17
Active probe interface is connected with above-mentioned probe, the above-mentioned exercise data for receiving the generation of acceleration transducer 15, letter
Number process chip 26 connection acceleration transducer interface 25, is identified to above-mentioned exercise data, generates recognition result,
Control chip 27 controls the oscillograph to act according to the recognition result.
The exercise data of oscillograph treatment, can be motion corresponding exercise data of the probe in the case where user operates, and also may be used
Be probe with testee vibrate and produce the corresponding exercise data of motion.
Action of the present invention by sensing hand-held probe changes, and the exercise data of probe is fed back into oscillograph, passes through
Default gesture function corresponding relation, is correspondingly operated to oscillograph, with realize to vertical sensitivity, it is vertical partially
The adjustment of level, level sensitivity, triggering and other specification is put, measured signal is completely stably displayed in and is shown
On ripple device display screen.And probe of the invention can also be detected to vibration signal, by vibration signal by electricity
The form of signal is displayed on screen, can carry out flaw detection detection to motor, lathe, steel plate.
Usually, when the motion of probe is the motion under being operated in user, signal processing chip 26 is specifically for right
The exercise data that probe is sent carries out gesture identification, and combines pre-stored gesture with the life of oscillograph control command mapping table
Into corresponding control command, control chip 27 according to the control command specifically for controlling oscillograph action.
When the motion of probe is the motion with testee vibration generation, signal processing chip 26 will be specifically for that will visit
The exercise data that hair comes is converted into electric signal, control chip 27 specifically for the control oscilloscope display electric signal,
Flaw detection measure is carried out with to motor, lathe, steel plate.
As a rule, above-mentioned oscillograph also includes a memory cell 28, is controlled with oscillograph for storing above-mentioned gesture
Command mapping table.
When the exercise data of the acceleration transducer output in probe is analog signal, above-mentioned oscillograph also includes a letter
Number processing unit 29, the signal processing unit 29 is connected to acceleration transducer interface 25 and signal processing chip 26
Between, for above-mentioned analog signal to be converted into digital data transmission to signal processing chip 26.
Present invention also offers a kind of movement recognition system, including at least one above-mentioned probe and figure shown in Fig. 2
Above-mentioned oscillograph shown in 3.When in movement recognition system comprising multiple probe, included in corresponding oscillograph with
Probe quantity identical acceleration transducer interface, to receive each exercise data popped one's head in and send.
The present invention can easily control oscillography using user in the measured signal farther out of measuring distance oscillograph
Device, shows signal integrity, operated at oscillograph without being returned to.And probe of the invention can also be right
Vibration signal is detected, and vibration signal is included on screen by the form of electric signal, can to motor, lathe,
Steel plate carries out flaw detection detection.
The embodiment of the present invention additionally provides a kind of motion recognition method for being applied to above-mentioned movement recognition system, its flow
As shown in Figure 4.The motion recognition method is comprised the following steps：
Step S1, the acceleration transducer 15 of above-mentioned probe sense the motion of the probe, and the motion based on the probe
Produce the exercise data of the probe.
Step S2,26 pairs of exercise datas of signal processing chip of above-mentioned oscillograph are identified and generate identification knot
Really.
Step S3, the control chip 27 of the oscillograph control the oscillograph action according to the recognition result.
Usually, when the motion under the motion of above-mentioned probe is operated for probe in user, above-mentioned steps S2 is specifically wrapped
Include：Signal processing chip 26 carries out digital filtering to above-mentioned exercise data, by digital filtering filter idle condition,
The unwanted state such as abnormality, is then normalized to the exercise data processed by digital filtering,
When different user is input into same gesture, the influence factor removal of the duration and movement range that will act, so as to follow-up
Data processing.Then, 26 pairs of exercise datas by normalized of signal processing chip carry out feature extraction, profit
Gesture identification is carried out to extracting the exercise data after feature with HMM, and is combined pre-stored gesture and is shown
Ripple device control command mapping table generates corresponding control command.Now, above-mentioned steps S3 is specifically included：Control chip
27 generate control command control oscillograph action according to signal processing chip 26.
Above-mentioned feature extraction typically uses sub-frame processing in short-term, and exercise data is divided into some data segments, Ran Houyong
Average as every frame speed key feature.
When gesture identification is carried out using HMM, significant gesture need to be pre-defined, and utilize hidden horse
Er Kefu models are modeled to every kind of significant gesture, and carry out gesture model training to the model, with finally training
HMM identification probe gesture.
For example, the meaningful gesture of definition includes：Percussion is popped one's head in, rotates clockwise, rotating counterclockwise, Z-direction
Rock, X-direction is rocked and rocked with Y direction.Above-mentioned gesture is defined in gesture identification part, is instructed
Practice, recognize, the number of times of training is more, recognition accuracy is higher during follow-up actually used probe.
The corresponding oscilloscope operations of each gesture can be default behavior, it is also possible to be set by oscillograph menu by user
Put, user can also open or close gesture identification function by menu.For example, can be set according to following mapping
Put：It is continuous to tap probe 3 times, start to recognize other gestures；It is continuous again to tap probe 3 times, close other gestures
Identification function；Continuous to tap probe 4 times for oscillograph is set automatically, oscillograph sets suitable vertical, level automatically
Gear and triggering, by signal integrity stabilization including on screen.Table 1 is given one and is sensed based on 3-axis acceleration
The gesture of device and the embodiment of oscillograph control command mapping table.
The gesture of table 1 and oscillograph control command mapping table
In addition, when the motion that the motion of above-mentioned probe is produced for probe with testee vibration, above-mentioned steps S2 tools
Body includes：Above-mentioned exercise data is converted into electric signal by the signal processing chip.Now, above-mentioned steps S3 is specific
Including：Control chip 27 controls above-mentioned oscilloscope display above-said current signal.
The present invention can easily control oscillography using user in the measured signal farther out of measuring distance oscillograph
Device, shows signal integrity, operated at oscillograph without being returned to.And probe of the invention can also be right
Vibration signal is detected, and vibration signal is included on screen by the form of electric signal, can to motor, lathe,
Steel plate carries out flaw detection detection.
The embodiment of the present invention uses the MEMS acceleration transducers of numeral output, the MEMS acceleration of numeral output
Sensor bulk is small, and the analog signal that MEMS acceleration transducers are exported is sampled into number by ADC inside it
Word signal output, enormously simplify the treatment to sensor signal inside oscillograph, can be directly connected to oscillograph
On signal processing chip.Using MEMS acceleration transducers, can be with detection probe in X-axis, Y-axis and Z axis side
To gesture operation.
Current MEMS acceleration transducer volumes have accomplished very small, can easily be integrated into oscillograph
It is many without increasing probe size in probe.It is for instance possible to use the axles of MEMS tri- of ADI companies accelerate
Degree sensor, available model is more, such as ADXL363, ADXL375, ADXL343.
Fig. 5 is the internal circuit block diagram of ADXL363, and its size is only 3.25mm*3.0mm*1.06mm.
ADXL363's has been internally integrated 3-axis acceleration sensor and signal conditioning circuit and the ADC of 12, by ADC
Output changes into SPI interface output, and SPI interface is the general-purpose interface of processor, can easily with the information of oscillograph
Process chip communicates.In addition, the inside of the ADXL363 also motion-activated pattern with adjustable threshold, can be conveniently
Filter out useless motion and reduce the power consumption of probe.
Apply specific embodiment in the present invention to be set forth principle of the invention and implementation method, above example
Explanation be only intended to help and understand the method for the present invention and its core concept；Simultaneously for the general technology of this area
Personnel, according to thought of the invention, will change in specific embodiments and applications, in sum,
This specification content should not be construed as limiting the invention.
Claims (15)
1. a kind of to pop one's head in, the probe includes：Probe tip, signal buffer unit, coaxial signal line and BNC connector,
The measured signal of probe tip collection by after the signal buffer unit buffered, via the coaxial signal line
And oscillograph is transferred to after BNC connector；Characterized in that, the probe also includes：
One acceleration transducer, the motion for sensing the probe, and the motion based on the probe produces the spy
The exercise data of head；
One interface board, connects the acceleration transducer；
One active probe interface, connects the interface board, the biography for the exercise data to be sent to the oscillograph
Sensor interface.
2. probe according to claim 1, it is characterised in that the motion of the probe includes：The probe
The motion that motion or the probe in the case where user operates are produced with testee vibration.
3. probe according to claim 1, it is characterised in that when the acceleration transducer is that single shaft accelerates
During degree sensor, the exercise data includes probe acceleration signal in the Z-axis direction, and/or the spy
Number of times and frequency that head is tapped, wherein the Z axis are vertical with the plane residing for the single-axis acceleration sensors.
4. probe according to claim 1, it is characterised in that when the acceleration transducer is that twin shaft accelerates
During degree sensor, the exercise data includes acceleration signal of the probe in X-axis and Y direction, and/or
The number of times and frequency being tapped of popping one's head in, wherein the X-axis and the plane and the acceleration sensing of Y-axis determination
Plane residing for device is parallel.
5. probe according to claim 1, it is characterised in that when the acceleration transducer is that three axles accelerate
During degree sensor, the exercise data includes acceleration of the probe on X-axis, Y-axis and the direction of principal axis of Z axis three
Signal, and/or the pop one's head in number of times that is tapped and the frequency, wherein the plane that determines of the X-axis and Y-axis with it is described
Plane residing for 3-axis acceleration sensor is parallel, and the Z axis hang down with the plane residing for the 3-axis acceleration sensor
Directly.
6. probe according to claim 5, it is characterised in that the 3-axis acceleration sensor is MEMS
Accelerometer.
7. a kind of oscillograph, described to show for processing the exercise data popped one's head in any one of claim 1-6
Ripple device includes：BNC input ports, input amplifying unit, A/D converting units, waveform processing unit and display are single
Unit, the BNC input ports receive the measured signal, then in turn through the input amplifying unit, A/D
Shown into the display unit after converting unit, waveform processing unit；Characterized in that, the oscillograph is also
Including：Acceleration transducer interface, signal processing chip and control chip；Wherein,
The acceleration transducer interface is connected by the active probe interface with the probe, for receiving described adding
The exercise data that velocity sensor is produced；
The signal processing chip connects the acceleration transducer interface, and the exercise data is identified, and generates
Recognition result；
The control chip controls the oscillograph action according to the recognition result.
8. oscillograph according to claim 7, it is characterised in that the motion of the probe includes：The spy
Motion of the head in the case where user operates；
The signal processing chip combines pre-stored gesture specifically for carrying out gesture identification to the exercise data
With the oscillograph control command mapping table corresponding control command of generation；
The control chip according to the control command specifically for controlling the oscillograph action.
9. oscillograph according to claim 7, it is characterised in that the motion of the probe includes：The spy
The motion that head is produced with testee vibration；
The signal processing chip by the exercise data specifically for being converted into electric signal；
The control chip is specifically for controlling electric signal described in the oscilloscope display.
10. oscillograph according to claim 7, it is characterised in that the oscillograph also includes that a storage is single
Unit, for storing the gesture and oscillograph control command mapping table.
11. oscillographs according to claim 7, it is characterised in that the oscillograph also includes a signal transacting
Unit, is connected between the acceleration transducer interface and signal processing chip, when the exercise data for simulation is believed
Number when, for the analog signal to be converted into data signal.
12. a kind of movement recognition systems, it is characterised in that the movement recognition system includes：At least one such as right
It is required that the probe described in any one of 1-6, and an oscillograph as described in claim any one of 7-11.
A kind of 13. motion recognition methods, are applied to the movement recognition system described in claim 12, it is characterised in that
The motion recognition method includes：
The acceleration transducer of the probe senses the motion of the probe, and the generation of the motion based on the probe is described
The exercise data of probe；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result；
The control chip of the oscillograph controls the oscillograph action according to the recognition result.
14. motion recognition methods according to claim 13, it is characterised in that the motion of the probe includes：
Motion of the probe in the case where user operates；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result, including：Institute
State signal processing chip carries out digital filtering, normalized successively to the exercise data, then to by normalizing
The exercise data for the treatment of carries out feature extraction, and using HMM to extracting the motion after feature
Data carry out gesture identification, and combine pre-stored gesture control life corresponding with the generation of oscillograph control command mapping table
Order；
The control chip of the oscillograph controls the oscillograph action according to the recognition result, including：It is described
Control chip controls the oscillograph action according to the control command.
15. motion recognition methods according to claim 13, it is characterised in that the motion of the probe includes：
The motion that the probe is produced with testee vibration；
The signal processing chip of the oscillograph is identified to the exercise data and generates recognition result, including：Institute
State signal processing chip and the exercise data is converted into electric signal；
The control chip of the oscillograph controls the oscillograph action according to the recognition result, including：It is described
Control chip controls electric signal described in the oscilloscope display.
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| CN201510977035.5A CN106908643B (en) | 2015-12-23 | 2015-12-23 | Probe, oscilloscope, motion recognition system and method |
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| CN201510977035.5A CN106908643B (en) | 2015-12-23 | 2015-12-23 | Probe, oscilloscope, motion recognition system and method |
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