发明名称 |
Arterial blood velocity to volume flow converter |
摘要 |
A arterial blood velocity-to-volume flow rate converter, including a pair of function generators a computer, and a multiplier, is incorporated within a system to objectively measure by non-invasive means the blood volume flow rate to the head of an occupant in a rapidly accelerating vehicle, and take corrective measures to stabilize the vehicle when that flow falls below a preselected lower limit for a predetermined length of time. A conventional ultrasonic Doppler velocimeter determines the blood velocity, subsequently feeding a representative signal to pressure function generator. The output therefrom is then fed to a cross-sectional area signal generator which determines the time-varying area of the artery, a signal representing such being fed to the multiplier along with the velocity signal to compute the flow. When that flow falls below a pre-selected lower limit for a predetermined length of time as determined by a comparator and timer, a command signal is sent to override circuitry to stablize the vehicle.
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申请公布号 |
US4667678(A) |
申请公布日期 |
1987.05.26 |
申请号 |
US19850770044 |
申请日期 |
1985.08.28 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
CROSBIE, RICHARD J.;COLOMBO, JOSEPH;GRANT, J. WALLACE |
分类号 |
G01P1/10;G06F17/00;(IPC1-7):A61B10/00 |
主分类号 |
G01P1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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