CN109900861A - Material surface sense of touch test device and method - Google Patents
Material surface sense of touch test device and method Download PDFInfo
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- CN109900861A CN109900861A CN201910128565.0A CN201910128565A CN109900861A CN 109900861 A CN109900861 A CN 109900861A CN 201910128565 A CN201910128565 A CN 201910128565A CN 109900861 A CN109900861 A CN 109900861A
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Abstract
Material surface sense of touch test device, including rack, screw rod guide rail mould group, synchronous belt mould group, touching device, device for fixing finger, control system and brain electric test device.Test method is to drive touching device to do shuttling movement by screw rod guide rail mould group and synchronous belt mould group and realize that the passive type of material surface sense of touch is tested.Material surface sense of touch test device and method stability of the invention is good, noise is small, the time is accurate, touching intensity is stable, quick action, touch time, speed, apart from accurate adjustable, and the synchronism in touching test and eeg signal acquisition ensure that by piezoelectric film sensor, substantially increase the accuracy of material surface sense of touch test.
Description
Technical field
The present invention relates to sense of touch tests, and in particular to material surface sense of touch test device and method.
Background technique
When the sense of touch to people is tested, often need it is tested go carry out Active touch material surface, due to touch when
Time interval and strength difference, experiment be commonly present certain error.In addition, because tested Active touch number is excessive
Or overlong time, it is tested to be also also easy to produce fatigue, cause the brain electricity as caused by sense of touch just to be deposited with produced brain electricity under normal circumstances
In difference, there is large effect to experiment test and data analysis, influence the accuracy of experimental result.Design a kind of active touching
It touches and passively touches the mode combined so that experimental result is more accurate is necessary.
Summary of the invention
The purpose of the present invention is to provide material surface sense of touch test device and methods, and Active touch and passive touch are tied
Altogether to improve the accuracy of sense of touch experimental result.
For achieving the above object, technical solution of the present invention is specific as follows:
Material surface sense of touch test device, including rack, screw rod guide rail mould group, synchronous belt mould group, touching device, finger are solid
Determine device, control system and brain electric test device, device for fixing finger is located at rack side, and screw rod guide rail mould group is horizontally fixed on
In rack, synchronous belt mould group is fixed on the screw slide of screw rod guide rail mould group by corner brace connector vertically, and touching device is fixed
In the side of synchronous belt mould group, there are several platforms, platform lower surface is for fixing sense of touch sample, platform following table on touching device
There is sensor, screw rod guide rail mould group and synchronous belt Mo Zu are connected with control system respectively, sensor between face and sense of touch sample
It is connected with brain electric test device.
Further, sensor is piezoelectric film sensor.
Further, platform is three platforms being parallel to each other.
Further, control system is single-chip microcontroller.
The method for carrying out sense of touch test using material surface sense of touch test device, comprising steps of
S1: the finger of tester is fixed on device for fixing finger, makes the finger tripe of finger front end upward, by brain electrical measurement
Trial assembly, which is set, is fixed on tester head, and sense of touch sample is fixed on the lower surface of platform；
S2: the action parameter of screw rod guide rail mould group and synchronous belt mould group is set separately；
S3: screw rod guide rail mould group and synchronous belt mould group according to action parameter carry out movement drive touching device do continuously to
Before, downwards, shuttling movement rearwardly and upwardly；Shuttling movement specifically:
Touching device, which travels forward, is located at sense of touch sample above tester's finger tripe；
Touching device, which moves downward, is pressed in sense of touch sample on tester's finger tripe, while piezoelectric film sensor will generate
Pressure signal be transferred to brain electric test device；
Touching device moves backward slips over sense of touch sample on tester's finger tripe, while brain electric test device record is surveyed
The EEG signals of examination person；
Touching device, which moves upwards, is detached from sense of touch sample and tester's finger tripe.
Further, platform be several, the action parameter be several groups, each platform respectively with each action parameter group phase
It is corresponding.
Further, the time interval between the corresponding circulation action of each action parameter group is not less than 0.1 second.
Compared with prior art, beneficial effects of the present invention:
Material surface sense of touch test device of the invention and method drive touching by screw rod guide rail mould group and synchronous belt mould group
It touches device and does the passive type test that shuttling movement realizes material surface sense of touch, stability is good, noise is small, the time is accurate, touch force
Stable, quick action is spent, touch time, speed, distance are accurate adjustable, and ensure that and touching by piezoelectric film sensor
The synchronism of test and eeg signal acquisition substantially increases the accuracy of material surface sense of touch test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of material surface sense of touch test device；
Fig. 2 is the motion path schematic diagram of touch-surface circulation；
Fig. 3 is the control principle drawing of control system.
Specific embodiment:
Embodiment
As depicted in figs. 1 and 2, material surface sense of touch test device, including screw rod guide rail mould group, synchronous belt mould group, touch
Device 12, rack 6, device for fixing finger 15, control system and brain electric test device.Screw rod guide rail mould group includes screw rod stepping electricity
Machine 1, shaft coupling 2, ball-screw 3, screw slide 4, lead screw guide rails 5.Synchronous belt mould group include synchronous belt straight line mould group guide rail 8,
Synchronous belt straight line mould group slide unit 9, synchronous belt 13 and synchronous belt stepper motor 14.Have on touching device 12 3 platforms (on to
Under be followed successively by a1、a2、a3), platform lower surface has between platform lower surface and sense of touch sample 11 for fixing sense of touch sample 11
Piezoelectric film sensor 10.Screw rod stepper motor 1 and synchronous belt stepper motor 14 are connected with control system respectively, and piezoelectric membrane passes
Sensor 10 is connected with brain electric test device.Ball screw assembly, is fixed in rack 6 by lead screw stand connection.Screw rod stepping electricity
The output shaft of machine 1 is connected by shaft coupling 2 with ball-screw 3, and ball-screw 3 is by lead screw guide rails 5 and screw slide 4 screw rod
The rotary motion of stepper motor 1 is converted to linear motion, and synchronous belt straight line mould group guide rail 8 is fixed on rolling by corner brace connector 7
In the screw slide 4 of ballscrew pair, touching device 12 is fixed on synchronous belt straight line mould group slide unit 9.
As shown in figure 3, control system is by power circuit, single-chip microcontroller, driver, key, synchronous belt stepper motor, ball wire
The composition such as thick stick stepper motor.For single-chip microcontroller using STM32F407ZGT6 chip as CPU, single-chip microcontroller exports pulse to driver
Pulse receiving end, by controlling the duty ratio and frequency shift stepper motor revolving speed of pwm wave, while single-chip microcontroller output height electricity
It puts down to the direction receiving end of driver, changes the rotation direction of stepper motor by control low and high level.Key is then every 10ms
Run-down, while carrying out key software for jitters elimination and increasing system stability, if there is respective keys to press, input signal is to monolithic
Different operatings is realized in machine, the corresponding instruction of single-chip microcontroller operation.Piezoelectric film sensor can have the hair of no touch with real-time detection
It is raw, and touch signal is sent to brain electric equipment amplifier, it is recorded and is handled in real time by brain electric equipment software
Material sense of touch test method, comprises the following steps that
The finger of tester is fixed on device for fixing finger, makes the finger tripe of finger front end upward, by brain electrical testing
Device is fixed on tester head, and sense of touch sample is fixed on the lower surface of platform；
Pass through the circulation that key realizes a touch-surface, it may be assumed that first allow touching device setting time t in the horizontal direction1
Interior forward movement set distance s1, then allow touching device setting time t2Interior vertical downward movement set distance s2, make touching device
Intermediate touch surface a2The finger tripe of index finger can be touched and triggering simultaneously is attached to piezoelectric film sensor above, then
Setting time t in horizontal direction1Inside move backward set distance s1, the brain electricity of synchronous acquisition people touch perception material surface material
Signal, to this process after, finger is partially separated with touch, is completed the eeg signal acquisition of a tactilely-perceptible, is then touched
Touch the upward setting time t of device2Move set distance s2, so that touching device is returned to initial position, the above movement is known as one
The circulation of touch-surface.
One complete motion sequence can be recycled by n times and be formed, and touch-surface after circulation terminates can be into
The circulation of row another kind touch-surface, i.e. a1With a2、a2With a3Between can freely convert, the examination of one group of brain wave acquisition is completed with this
It tests.Test device control section can concurrently set the different entire motion sequence of 3 parameters, respectively by key_0, key_1 and
Key_2 key is realized, is transferred at random according in experiment purpose test process.
Claims (7)
1. material surface sense of touch test device, which is characterized in that including rack, screw rod guide rail mould group, synchronous belt mould group, touch dress
It sets, device for fixing finger, control system and brain electric test device, device for fixing finger are located at rack side, screw rod guide rail mould group
It is horizontally fixed in rack, synchronous belt mould group is fixed on the screw slide of screw rod guide rail mould group, touching by corner brace connector vertically
The side that device is fixed on synchronous belt mould group is touched, there are several platforms, platform lower surface is for fixing sense of touch examination on touching device
Sample, has a sensor between platform lower surface and sense of touch sample, screw rod guide rail mould group and synchronous belt Mo Zu respectively with control system
It is connected, sensor is connected with brain electric test device.
2. material surface sense of touch test device according to claim 1, which is characterized in that the sensor is piezoelectric membrane
Sensor.
3. material surface sense of touch test device according to claim 1, which is characterized in that the platform is three mutually flat
Capable platform.
4. material surface sense of touch test device according to claim 1, which is characterized in that the control system is monolithic
Machine.
5. the method for carrying out sense of touch test using material surface sense of touch test device, which is characterized in that comprising steps of
S1: the finger of tester is fixed on device for fixing finger, makes the finger tripe of finger front end upward, by brain electrical measurement trial assembly
It sets and is fixed on tester head, sense of touch sample is fixed on the lower surface of platform；
S2: the action parameter of screw rod guide rail mould group and synchronous belt mould group is set separately；
S3: screw rod guide rail mould group and synchronous belt mould group according to action parameter carry out movement drive touching device do it is continuous forward,
Downwards, shuttling movement rearwardly and upwardly；Shuttling movement specifically:
Touching device, which travels forward, is located at sense of touch sample above tester's finger tripe；
Touching device, which moves downward, is pressed in sense of touch sample on tester's finger tripe, while piezoelectric film sensor is by the pressure of generation
Force signal is transferred to brain electric test device；
Touching device moves backward slips over sense of touch sample on tester's finger tripe, while brain electric test device records tester
EEG signals；
Touching device, which moves upwards, is detached from sense of touch sample and tester's finger tripe.
6. according to the method described in claim 5, action parameter is several it is characterized in that, the platform is several
Group, each platform are corresponding with each action parameter group respectively.
7. according to the method described in claim 6, it is characterized in that, between time between the corresponding circulation action of each action parameter group
Every not less than 0.1 second.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910128565.0A CN109900861A (en) | 2019-02-21 | 2019-02-21 | Material surface sense of touch test device and method |
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| CN201910128565.0A CN109900861A (en) | 2019-02-21 | 2019-02-21 | Material surface sense of touch test device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967290A (en) * | 2012-11-15 | 2013-03-13 | 东华大学 | Analog measuring method in texture touching evaluation process |
| CN104374877A (en) * | 2014-11-07 | 2015-02-25 | 东华大学 | Clothes touch capture stimulator based on electroencephalogram |
| CN206095903U (en) * | 2016-10-17 | 2017-04-12 | 西南交通大学 | Finger friction test equipment |
| CN107764662A (en) * | 2017-11-23 | 2018-03-06 | 中国计量大学 | A kind of textile feel characteristic test device and method |
| CN107782881A (en) * | 2017-11-30 | 2018-03-09 | 东华大学 | The textile synthesis style measurement apparatus and method felt based on human body five |
| CN108956113A (en) * | 2018-07-05 | 2018-12-07 | 浙江理工大学 | Fingertip tactile-sense performance test experimental apparatus |
-
2019
- 2019-02-21 CN CN201910128565.0A patent/CN109900861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967290A (en) * | 2012-11-15 | 2013-03-13 | 东华大学 | Analog measuring method in texture touching evaluation process |
| CN104374877A (en) * | 2014-11-07 | 2015-02-25 | 东华大学 | Clothes touch capture stimulator based on electroencephalogram |
| CN206095903U (en) * | 2016-10-17 | 2017-04-12 | 西南交通大学 | Finger friction test equipment |
| CN107764662A (en) * | 2017-11-23 | 2018-03-06 | 中国计量大学 | A kind of textile feel characteristic test device and method |
| CN107782881A (en) * | 2017-11-30 | 2018-03-09 | 东华大学 | The textile synthesis style measurement apparatus and method felt based on human body five |
| CN108956113A (en) * | 2018-07-05 | 2018-12-07 | 浙江理工大学 | Fingertip tactile-sense performance test experimental apparatus |
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