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Head posture sensing device and method

A technology of head posture and sensing device, applied in measurement devices, instruments, etc., can solve the problems of cumbersome mechanical tracking system, error, limited working range of acoustic tracking system, etc.

Active Publication Date: 2016-04-13
NINGBO CHIKEWEI ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the electromagnetic tracking system is easily disturbed by the external magnetic field, which may cause errors due to changes in the magnetic field
While the optical tracking system used in the above-mentioned literature is easily hindered by the implementation, in addition, the optical tracking system often does not provide data in the angular direction
The mechanical tracking system is characterized by relatively bulky, poor flexibility, and a certain amount of inertia, and due to the limitation of mechanical connections, there is a certain mechanical constraint on the user
The limitation of the acoustic tracking system is that the working range is limited, the signal transmission cannot be blocked, and it is easily affected by temperature, air pressure, humidity and environmental reflection sound waves

Method used

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  • Head posture sensing device and method

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Experimental program
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Effect test

Embodiment approach 1

[0043] Embodiment 1, only the acceleration signal is used to determine the head posture.

[0044] combine image 3 , according to this embodiment, in the above step S100, the inertial sensing detection unit may use an accelerometer, and the analog signal of the head posture information output by it includes the acceleration analog signal of the head in the space coordinates X, Y, and Z directions, In the above step S200, the digital signal of the head posture information includes the acceleration digital signal of the head in the spatial coordinates X, Y, and Z directions;

[0045] In the above step S300, the step of calculating the digital signal of the head posture information includes: respectively integrating the acceleration digital signals in the directions of space coordinates X, Y, and Z to obtain the motion state data and motion Parameter data, wherein the motion state data is head motion direction data, and the motion parameter data is head roll speed data and hea...

Embodiment approach 2

[0047] Embodiment 2, only using the angular velocity signal to determine the head posture.

[0048] According to this embodiment, in step S100, the inertial sensing detection unit adopts a gyroscope, preferably a three-axis gyroscope, and the analog signal of the head posture information output by it includes the spatial coordinates of the head in the X, Y, and Z directions. Angular velocity analog signal, in step S200, the digital signal of head posture information comprises the angular velocity digital signal of head on space coordinate X, Y, Z direction;

[0049] In step S300, the step of calculating the digital signal of the head posture information includes:

[0050] Integrate the angular velocity digital signals on the spatial coordinates X, Y, and Z directions respectively to obtain the motion state data and motion parameter data, wherein the motion state data is the rotation state data of the head in each direction, and the The motion parameter data is head motion a...

Embodiment approach 3

[0052] Embodiment 3, the acceleration and angular velocity signals are used simultaneously to determine the head posture.

[0053] According to this embodiment, in step S100, the inertial sensing detection unit simultaneously uses an acceleration sensor (such as an accelerometer) and an angular velocity sensor (such as a three-axis gyroscope), and the analog signal of the head posture information output by it includes the head Acceleration and angular velocity analog signals on the spatial coordinates X, Y, and Z directions. In step S200, the digital signal of the head attitude information includes acceleration and angular velocity digital signals of the head on the spatial coordinates X, Y, and Z directions;

[0054] In step S300, the step of calculating the digital signal of the head posture information includes:

[0055] Integrate the acceleration digital signal and the angular velocity digital signal on the space coordinates X, Y, and Z directions respectively to obtain ...

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Abstract

The invention provides a head posture sensing device and a head posture sensing method. The device comprises an inertia sensor detection unit, an analogue-to-digital conversion unit connected with the inertia sensor detection unit and an information processing unit connected with the analogue-to-digital conversion unit, wherein the information processing unit is connected with an input unit and an output unit; the inertia sensor detection unit comprises an inertia sensor, and is used for detecting head posture information, and outputting an analogue signal of the head posture information; and the analogue-to-digital conversion unit comprises an analogue-to-digital converter, and is used for converting the analogue signal detected by the inertia sensor into a digital signal of the head posture information. According to the head posture sensing device and the head posture sensing method, various motion statuses of a head can be detected stably and efficiently, and motion parameters of the head can be acquired.

Description

technical field [0001] The present invention relates to the posture detection of human head in motion, more specifically, a head posture sensing device and method. Background technique [0002] In the field of medical rehabilitation, sports training and entertainment, it is often necessary to obtain the movement state and movement parameters of the participant's head to meet different needs, for example, for the rehabilitation and correction of the head and neck, to provide training results for trainers, or in entertainment games Use the head posture to control etc. The acquisition of head motion state and motion parameters can be achieved by setting a three-dimensional motion tracking system on the helmet worn by the user, and then process the data measured by these tracking systems and send them to different interfaces, such as displays. Traditional three-dimensional tracking systems include electromagnetic tracking systems, optical tracking systems, mechanical tracking s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
Inventor 兰天陈养彬方继勇王建宽
Owner NINGBO CHIKEWEI ELECTRONICS CO LTD
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