Electrical power control system for parking meter
First Claim
1. A token operable electronic parking meter comprising:
- a first power source;
a controller for controlling electronic circuitry of the parking meter;
an interface circuit connected to the first power source and for controlling provision of power from the first power source to the controller;
the controller normally being completely disconnected from said first power source and being connectable to the first power source via first switch means which is controllable by the interface circuit; and
timer means arranged to generate a signal when power is required by the controller;
the interface circuit being sensitive to a signal from said timer means and being arranged to operate the first switch means in response to the signal, thereby to connect the controller to the first power source, to energize the controller in response to the input signal from said timer means.
1 Assignment
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Accused Products
Abstract
A token operable electronic parking meter 10 is disclosed and claimed. The meter comprises a first power source 18 and a controller 16 for controlling electronic circuity 20, 22 of the parking meter. An interface circuit 14 is connected to the first power source 18 for controlling provision of power from the first power source to the controller. In use, the controller is normally not connected to a power source, but is connectable to the first power source 18 via a first switch S1 which is controllable by the interface circuit 14. The meter 10 further comprises an independently powered timer 38 generating a signal when the controller 18 requires power. The interface circuit 14 is sensitive to a signal from the timer 38 and is arranged to close the first switch S1 in response to the signal, thereby to connect the controller 16 to the first power source 18, to energize the controller in response to the input signal from the timer.
61 Citations
14 Claims
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1. A token operable electronic parking meter comprising:
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a first power source; a controller for controlling electronic circuitry of the parking meter; an interface circuit connected to the first power source and for controlling provision of power from the first power source to the controller; the controller normally being completely disconnected from said first power source and being connectable to the first power source via first switch means which is controllable by the interface circuit; and timer means arranged to generate a signal when power is required by the controller; the interface circuit being sensitive to a signal from said timer means and being arranged to operate the first switch means in response to the signal, thereby to connect the controller to the first power source, to energize the controller in response to the input signal from said timer means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification