CN111481209A - Head movement measuring device under rotation condition - Google Patents
Head movement measuring device under rotation condition Download PDFInfo
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- CN111481209A CN111481209A CN202010263190.1A CN202010263190A CN111481209A CN 111481209 A CN111481209 A CN 111481209A CN 202010263190 A CN202010263190 A CN 202010263190A CN 111481209 A CN111481209 A CN 111481209A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1116—Determining posture transitions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1118—Determining activity level
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
Abstract
The invention provides a head movement measuring device under a rotating condition, which comprises a swivel chair, a flexible head movement detection module, a detection control module, a head movement data receiving module and head movement detection control software; the flexible head movement detection module is fixed in the middle of the top of the head of the testee through a tip fixing magic tape; detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of the rotation of the swivel chair through a flexible head movement detection module; obtaining head movement detection data by using a front offset angle and a rear offset angle of the head of the subject relative to the coronal plane of the subject; uploading the head movement detection data to head movement detection control software in a wireless transmission mode; the head movement detection control software is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement times and the head movement frequency of the tested person according to the head movement detection data, so that the Coriolis acceleration stimulation quantity of the trained person or the tested person can be more accurately evaluated.
Description
Technical Field
The invention relates to the technical field of vestibular function adaptability training, in particular to a head movement measuring device under a rotating condition.
Background
The Coriolis acceleration sensitivity inspection is an important means for military personnel such as air force, astronauts, aerospace and the like to carry out vestibular function adaptive training, and at present, generally, a swivel chair rotates around a human body z axis, a trainee or a subject sits on the swivel chair, and moves head while rotating to generate Coriolis acceleration stimulation. The head motion amplitude and the head motion frequency in the rotation process of the swivel chair are important indexes for measuring the stimulation quantity of Coriolis acceleration, and a monitoring device for measuring the active head motion of a subject under the current rotation condition is not reported. Coriolis acceleration stimulation is generally based on a set amplitude and frequency of head motion to estimate the amount of stimulation to the subject or trainee, and is not monitored and tracked quantitatively for implementation specific situations.
Acceleration is generally calculated according to a simple formula of coriolis acceleration, and the stimulation amount is the coriolis acceleration multiplied by the stimulation time.
Ac＝αωr……(1)
Wherein r-radius of human semicircular canal (cm), generally calculated as 0.3 cm;
ac-coriolis acceleration value (cm/s)2)；
α - -speed of swing of subject's head (pi/3 s)-1)；
Omega- - -rotational acceleration of swivel chair (radian/s)
In most of the documents α, the stimulation amount calculation is performed at a given head-moving swing velocity, and the actual head-moving swing velocity cannot be actually monitored, and thus the accuracy of the coriolis acceleration evaluation of the trainee or the subject cannot be ensured.
Disclosure of Invention
The invention aims to provide a head movement measuring device under a rotation condition, so as to realize real-time quantitative detection and recording of head movement amplitude and head movement frequency of a subject or a trainee under the rotation condition and meet the requirement of the head movement amplitude on the number of times of head movement, and to more accurately evaluate the Coriolis acceleration stimulation quantity of the trainee or the subject.
In order to achieve the purpose, the invention provides the following scheme:
a head movement measuring device under a rotating condition comprises a swivel chair, a flexible head movement detecting module, a detecting control module, a head movement data receiving module and head movement detecting control software;
the swivel chair is used for bearing a trainee and generating different modes of rotation around the Z axis of the human body;
the flexible head movement detection module is fixed in the middle of the top of the head of the testee through a tip fixing magic tape; the flexible head movement detection module is used for detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of rotating the swivel chair; the head of the subject is subjected to front offset angle and back offset angle relative to the coronal plane of the subject, head movement detection data are obtained, and the head movement detection data are sent to the detection control module;
the detection control module is fixed on the swivel chair, is in wireless connection with the head movement data receiving module, and is used for sending the head movement detection data to the head movement data receiving module;
the head movement data receiving module is connected with the head movement detection control software and is used for sending the head movement detection data to the head movement detection control software;
the head movement detection control software is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement times and the head movement frequency of the testee according to the head movement detection data.
Optionally, the flexible head movement detection module includes a tilt sensor with a dual-axis tilt detection function and a flexible carrier;
the inclination angle sensor is fixed on the flexible carrier, and the flexible carrier is fixed with the top of the head of a subject through a tip fixing magic tape;
the tilt angle sensor is connected with the detection control module.
Optionally, the flexible head movement detection module further includes a power supply filter capacitor and an RC filter;
the power supply filter capacitor is arranged between the anode and the cathode of a power supply of the inclination angle sensor;
the RC filter is arranged at the output end of the inclination angle sensor.
Optionally, the detection control module includes a first filter circuit, an operational amplifier circuit, a main control unit, and a head-moving data sending module;
the flexible head movement detection module is connected with the first filter circuit, the first filter circuit is connected with the operational amplification circuit, the operational amplification circuit is connected with the main control unit, and the main control unit is connected with the head movement data sending module;
the head moving data sending module is in wireless connection with the head moving data receiving module.
Optionally, the detection control module further includes a power conversion module;
the input end of the power supply conversion module is connected with the lithium battery, and the output end of the power supply conversion module is respectively connected with the signal filter circuit, the operational amplifier circuit, the main control unit and the head movement data sending module;
the power supply conversion module is also connected with the flexible head movement detection module.
Optionally, the power conversion module includes a first filter capacitor, a voltage stabilizer, and a second filter capacitor;
the input end of the voltage stabilizer is connected with the lithium battery through the first filter capacitor;
the output end of the voltage stabilizer is connected with the signal filter circuit, the operational amplifier circuit, the main control unit, the head movement data sending module and the flexible head movement detection module through the second filter capacitor.
Optionally, the detection control module further includes a battery power detection module;
the battery electric quantity detection module comprises a second filter circuit and a double operational amplifier;
the input end of the double operational amplifier is connected with the lithium battery through the second filter circuit, and the output end of the double operational amplifier is connected with the main control unit.
Optionally, the head movement data sending module and the head movement data receiving module are both bluetooth modules.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a head movement measuring device under a rotating condition, which comprises a swivel chair, a flexible head movement detecting module, a detecting control module, a head movement data receiving module and head movement detecting control software; the flexible head movement detection module is fixed in the middle of the top of the head of the testee through a tip fixing magic tape; the flexible head movement detection module is used for detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of rotating the swivel chair; the head of the subject is offset to the front and back angles of the coronal plane of the subject to obtain head movement detection data, and the head movement detection data is uploaded to head movement detection control software through the detection control module and the head movement data receiving module; the head movement detection control software is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement frequency and the head movement frequency of the testee according to the head movement detection data. Reliable quantitative detection hardware and technical support are provided for testing and training the Coriolis acceleration stimulation sensitivity in air force flying, astronauts selecting and training.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a head movement measuring device under rotation conditions according to the present invention;
fig. 2 is a schematic structural principle diagram of the head movement measuring device under the rotation condition provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a head movement measuring device under a rotation condition so as to realize real-time quantitative detection and recording of head movement amplitude and head movement frequency of a subject or trainee under the rotation condition and head movement times meeting the requirements of the head movement amplitude.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In order to achieve the purpose, the invention provides the following scheme:
as shown in fig. 1 and 2, the present invention provides a head movement measuring device under rotation condition, which comprises a swivel chair, a flexible head movement detecting module 13, a detecting control module 23, a head movement data receiving module 22 and head movement detecting control software 21; the swivel chair is used for bearing a trainee and generating different modes of rotation around the Z axis of the human body; the flexible head movement detection module 13 is fixed at the middle position of the top of the head of the testee through a hair tip fixing magic tape 14; the flexible head movement detection module is used for detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of rotating the swivel chair; the front offset angle and the rear offset angle of the head of the subject relative to the coronal plane of the subject to obtain head movement detection data, and send the head movement detection data to the detection control module 23; the detection control module 23 is fixed on the backrest of the swivel chair, supplies power to the head movement detection module, and communicates with the data receiving module through Bluetooth; the detection control module 23 is wirelessly connected with the head movement data receiving module 22, and the detection control module 23 is configured to send the head movement detection data to the head movement data receiving module 22; the head movement data receiving module 22 is connected to the head movement detection control software 21, and the head movement data receiving module 22 is configured to send the head movement detection data to the head movement detection control software 21; the head movement detection control software 21 is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement times and the head movement frequency of the subject according to the head movement detection data.
The rotary chair can rotate according to the set speed profile curve, including the trapezoidal speed curve, the sine harmonic curve and the like, and the maximum speed can reach 450 degrees/s.
The fixed magic subsides of hair tip 14 and the head move detection module 13 lug connection and become an organic whole, adopt the magic subsides to move the detection module with the head and fix on the top of the head hair matter, guarantee that the head moves the detection module and do not slide when the experimenter head moves for accurately carry out the calibration of head and move initial position, stable fixed, neither influence the experimenter image, head moves detection module 13 quality light, does not have great pressure to the experimenter. Turning on a power switch of a detection control module, checking electric quantity, and if the electric quantity is insufficient, charging in advance; the head movement data receiving module is connected with a computer, the computer is opened, head movement detection control software is started, a subject firstly calibrates left and right head movements and front and back head movements, markers for left, right, forward and back head movements are set according to head movement amplitude required by training or inspection, the subject firstly tilts the head forward by 30 degrees to ensure that a horizontal semicircular canal is in a horizontal position, then starts head movement and is attached to markers in different directions, and the required head movement amplitude degrees are reached, namely 30 degrees leftwards, 30 degrees rightwards, 25 degrees forwards and 25 degrees backwards and 15 degrees backwards. Then the swivel chair can start rotating according to a set rotating curve, a subject starts moving according to the command 'start head movement' of the engineering, then starts moving the head, the head movement detection control software works to synchronously press keys to start recording the head movement condition, the software displays the head movement degrees and curves of the front, the back, the left and the right of the head in real time, records the head movement times according to the condition of reaching a calibration position, hears the command 'end head movement', the subject stops moving the head, the software controls the person to press keys to stop recording the head movement, and the swivel chair stops moving. The overall condition of the head movement can be observed through software playback, the head movement times and the head movement frequency meeting the head movement amplitude requirement of the examination can be obtained through a head movement detection report of the software, and the Coriolis acceleration stimulation quantity born by a subject can be calculated according to the head movement times and frequency and the angular speed and time of the rotation of the swivel chair during the head movement to serve as a measurement index for evaluating the sensitivity of a volunteer.
The head movement detection control software displays the head movement amplitude, the head movement frequency and the head movement times, can store a test result in a database, and supports review and check; during each test, calibrating the reference of the head position to ensure the consistency of the measurement; after the detection is started, displaying the angle value of the head moving amplitude in real time; the angle values of left, right, front and back can be displayed; displaying a real-time curve of the angle values; after the detection is started, counting for one time when the amplitude of the head swing reaches a threshold value, wherein the counting is invalid when the amplitude of the head swing does not reach the threshold value, and the counting is not carried out, and after the amplitude of the head swing reaches the threshold value, the head returns to be below the threshold value, and the head again reaches the threshold value to carry out the next counting; calculating the head movement frequency according to the head movement times per minute and displaying the head movement frequency; the running of the software is monitored by adopting a watchdog, if the phenomenon of program crash or runaway is found, the software automatically runs the program to a state before a problem occurs so as to ensure the normal running of detection; during communication, an automatic disconnection connection design is adopted, and if communication is abnormal, communication can be restarted, so that data is not lost, and the method is safe and reliable; and eliminating the maximum value and the minimum value of the acquired data, calculating the average value of the acquired data for 3 times, and performing software filtering to ensure the stability of the acquired data.
The flexible head motion detection module 13 comprises a tilt sensor with a dual-axis tilt detection function and a flexible carrier; the inclination angle sensor is fixed on the flexible carrier, and the flexible carrier is fixed with the top of the head of a subject through a tip fixing magic tape; the tilt sensor is connected to the detection control module 23. The head movement detection module selects an inclination angle sensor with a double-shaft inclination angle detection function, the detection range is +/-90 degrees, the resolution reaches 0.025 degrees, the head movement detection module has damping frequency response and temperature compensation, output signals comprise analog voltage output and SPI output, and the power supply voltage is 0.3-5.5V.
The flexible head movement detection module 13 further comprises a power supply filter capacitor and an RC filter; the power supply filter capacitor is arranged between the anode and the cathode of a power supply of the inclination angle sensor; the RC filter is arranged at the output end of the inclination angle sensor. According to the invention, 100nf capacitors are directly connected to VCC and GND of the tilt angle sensor for filtering, so as to ensure the stability of power supply; at the output of the sensor, low-pass RC filters of 5.1k Ω and 10nf are used to reduce noise interference.
Optionally, the detection control module 23 includes a first filter circuit, an operational amplifier circuit, a main control unit, and a head-moving data sending module; the flexible head movement detection module is connected with the first filter circuit, the first filter circuit is connected with the operational amplification circuit, the operational amplification circuit is connected with the main control unit, and the main control unit is connected with the head movement data sending module; the head movement data sending module is wirelessly connected with the head movement data receiving module 22. And processing the voltage value output by the inclination angle sensor acquisition module. The output voltage of the tilt angle sensor is 0-5V, the acquisition voltage of the main control unit is 0-5V, and the operational amplifier adopts an emitter follower principle to amplify current so as to improve the load capacity of the whole amplifying circuit and provide the stability of A/D input voltage.
The detection control module 23 further comprises a power supply conversion module, the input end of the power supply conversion module is connected with a lithium battery, the output end of the power supply conversion module is respectively connected with a signal filter circuit, an operational amplifier circuit, a main control unit and a head movement data sending module, the power supply conversion module is also connected with the flexible head movement detection module 13, the power supply conversion module comprises a first filter capacitor, a voltage stabilizer and a second filter capacitor, the input end of the voltage stabilizer is connected with the lithium battery through the first filter capacitor, the output end of the voltage stabilizer is connected with the signal filter circuit through the second filter capacitor, the operational amplifier circuit, the main control unit, the head movement data sending module and the flexible head movement detection module are connected, the detection control module 23 is made of ABS materials, the shell is provided with two L ED indicating lamps which respectively indicate an electrifying state and a battery electric quantity alarming state, the green indicating that the control module is electrified and works, the red L indicating that the battery is electrified and low in electric quantity and needs to be charged, the detection control module is provided with a power supply switch, the detection control module adopts a 9V power supply, a power supply device which can cut off, a current limiting device which outputs a current limiting device and a current limiting device which outputs a current limiting device which has a current limiting function of 100A and a current limiting device which outputs a.
The detection control module 23 further comprises a battery power detection module; the battery electric quantity detection module comprises a second filter circuit and a double operational amplifier; the input end of the double operational amplifier is connected with the lithium battery through the second filter circuit, and the output end of the double operational amplifier is connected with the main control unit. In order to ensure the normal operation of the test, the detection control module needs to detect the electric quantity of the battery voltage, and when the electric quantity is lower than a certain voltage value and the control module cannot work normally, an alarm prompt needs to be given. The HA17358 is used for detecting the electric quantity, the HA17358 is supplied by a single power supply and is a dual operational amplifier with high gain and internal phase compensation, the output end of the battery is connected with the input end of the amplifier through a filter circuit, the output end of the amplifier is connected with the input end of the main control unit with the A/D conversion function, and the main control unit judges whether the current electric quantity of the battery is normal or not according to the collected voltage value.
The head movement data sending module and the head movement data receiving module 22 are both Bluetooth modules, the Bluetooth module with ultra-low power consumption and standby mode only having 3mA current is selected, data transmission has a transparent transmission function, the data transmission can be realized without carrying out communication operation on the module after the module is set, the module is provided with an onboard antenna, an external antenna is reduced, the size is reduced, the working frequency range is 2402 and 2480MHz, the theoretical maximum transmission distance is 20m, the interface adopts a TT L serial port, and is convenient to interface with a main control unit, the Bluetooth module receives data sent by the detection control module and transmits the data to head movement detection control software through a USB interface, the output level of the receiving Bluetooth module is TT L, the level of the USB interface of a computer is a USB level, and an SP3232 chip is selected to cooperate with a USB-to-RS 232 communication line to realize level matching.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a head movement measuring device under a rotating condition, which comprises a swivel chair, a flexible head movement detecting module, a detecting control module, a head movement data receiving module and head movement detecting control software; the flexible head movement detection module is fixed in the middle of the top of the head of the testee through a tip fixing magic tape; the flexible head movement detection module is used for detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of rotating the swivel chair; the head of the subject is offset to the front and back angles of the coronal plane of the subject to obtain head movement detection data, and the head movement detection data is uploaded to head movement detection control software through the detection control module and the head movement data receiving module; the head movement detection control software is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement frequency and the head movement frequency of a tested person according to the head movement detection data, so that the real-time quantitative detection and recording of the head movement amplitude and the head movement frequency of the tested person or the trained person under the rotation condition and the head movement frequency meeting the requirements of the head movement amplitude are realized, and reliable quantitative detection hardware and technical support are provided for the detection and training of Coriolis acceleration stimulation sensitivity in air force flight, astronauts selection and training.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The head movement measuring device under the rotation condition is characterized by comprising a swivel chair, a flexible head movement detecting module, a detecting control module, a head movement data receiving module and head movement detecting control software;
the swivel chair is used for bearing a trainee and generating different modes of rotation around the Z axis of the human body;
the flexible head movement detection module is fixed in the middle of the top of the head of the testee through a tip fixing magic tape; the flexible head movement detection module is used for detecting a left deviation angle and a right deviation angle of the head of the subject relative to the sagittal plane of the subject under the condition of rotating the swivel chair; the head of the subject is subjected to front offset angle and back offset angle relative to the coronal plane of the subject, head movement detection data are obtained, and the head movement detection data are sent to the detection control module;
the detection control module is fixed on the swivel chair, is in wireless connection with the head movement data receiving module, and is used for sending the head movement detection data to the head movement data receiving module;
the head movement data receiving module is connected with the head movement detection control software and is used for sending the head movement detection data to the head movement detection control software;
the head movement detection control software is used for displaying and storing the head movement detection data, and determining the head movement amplitude, the head movement times and the head movement frequency of the testee according to the head movement detection data.
2. The rotational condition head motion measurement device according to claim 1, wherein the flexible head motion detection module comprises a tilt sensor having a dual-axis tilt detection function and a flexible carrier;
the inclination angle sensor is fixed on the flexible carrier, and the flexible carrier is fixed with the top of the head of a subject through a tip fixing magic tape;
the tilt angle sensor is connected with the detection control module.
3. The rotational condition headset measuring device of claim 2, wherein the flexible headset detecting module further comprises a power supply filter capacitor and an RC filter;
the power supply filter capacitor is arranged between the anode and the cathode of a power supply of the inclination angle sensor;
the RC filter is arranged at the output end of the inclination angle sensor.
4. The head movement measuring device under the rotating condition according to claim 1, wherein the detection control module comprises a first filter circuit, an operational amplifier circuit, a main control unit and a head movement data sending module;
the flexible head movement detection module is connected with the first filter circuit, the first filter circuit is connected with the operational amplification circuit, the operational amplification circuit is connected with the main control unit, and the main control unit is connected with the head movement data sending module;
the head moving data sending module is in wireless connection with the head moving data receiving module.
5. The rotational condition cephalometric measurement device according to claim 4, characterized in that said detection control module further comprises a power conversion module;
the input end of the power supply conversion module is connected with the lithium battery, and the output end of the power supply conversion module is respectively connected with the signal filter circuit, the operational amplifier circuit, the main control unit and the head movement data sending module;
the power supply conversion module is also connected with the flexible head movement detection module.
6. The device of claim 5, wherein the power conversion module comprises a first filter capacitor, a regulator, and a second filter capacitor;
the input end of the voltage stabilizer is connected with the lithium battery through the first filter capacitor;
the output end of the voltage stabilizer is connected with the signal filter circuit, the operational amplifier circuit, the main control unit, the head movement data sending module and the flexible head movement detection module through the second filter capacitor.
7. The rotational condition head motion measurement device of claim 4, wherein the detection control module further comprises a battery charge detection module;
the battery electric quantity detection module comprises a second filter circuit and a double operational amplifier;
the input end of the double operational amplifier is connected with the lithium battery through the second filter circuit, and the output end of the double operational amplifier is connected with the main control unit.
8. The device of claim 4, wherein the data sending module and the data receiving module are both Bluetooth modules.
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