Light-emitting device having a phosphor particle layer with specific thickness
First Claim
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1. A barrier movement control apparatus, the apparatus comprising:
- an ultrasonic measurement device positioned on the movement control apparatus to measure a length of a barrier;
an analysis unit in communicative connection with the ultrasonic measurement device to determine the length of the barrier and to generate a state signal based on length information obtained from said ultrasonic measurement unit; and
a barrier control unit responsive to a state signal from said analysis unit to control the barrier operational characteristics based on said state signal.
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Abstract
A method and system for controlling the speed of security gate depending on its length is disclosed. It includes a system for determining the length of a gate that the system is working with and which automatically sets the speed of movement of the gate based on length. The system works automatically so that human intervention is not necessary to set the optimal speed once installed.
14 Citations
17 Claims
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1. A barrier movement control apparatus, the apparatus comprising:
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an ultrasonic measurement device positioned on the movement control apparatus to measure a length of a barrier; an analysis unit in communicative connection with the ultrasonic measurement device to determine the length of the barrier and to generate a state signal based on length information obtained from said ultrasonic measurement unit; and a barrier control unit responsive to a state signal from said analysis unit to control the barrier operational characteristics based on said state signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for setting an optimal security gate speed, said method comprising the steps of:
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ultrasonically measuring a the length of a security gate; determining if the measured length of the security gate is less than a minimum length, and if it is, setting an operational speed of said gate, and a pre-set maximum speed; determining if the security gate is greater than a pre-set maximum length, and, if it is, setting the pre-determined speed of the gate at a pre-set minimum speed; and determining if the security gate has a length between the pre-set maximum and the preset minimum, and if it does, setting the operational speed of the gate at a rate equivalent of a pre-set value picked from a range of values, determined by the measured length of said gate.
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13. A method of controlling barrier speed in a barrier movement system comprising:
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mounting on the barrier movement system an ultrasonic device for measuring a length of the barrier; calculating a barrier movement speed in response to the length of the barrier measured by the mounted ultrasonic device; and moving the barrier at the speed calculated in the calculating step. - View Dependent Claims (14, 15, 16, 17)
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Specification