Nema cabinet monitor tester
First Claim
1. A device for testing components of a traffic control cabinet including a conflict monitor, a terminal panel having load switches and a flasher, controller cables, conflict monitor cables, a terminal strip, and field wiring which are all used in a traffic signal control cabinet for controlling the operation of a plurality of traffic signals in an intersection, the device comprising:
- a housing;
at least one connector for connecting the device to the terminal panel of the traffic control cabinet in place of the controller; and
a plurality of switches for selectively controlling the operation of the plurality of traffic signals, wherein the traffic signals can be controlled by the device while the conflict monitor is operating in order to simultaneously observe and verify the operation of the conflict monitor and the other components of the traffic control cabinet while controlling the operation of the traffic signals.
1 Assignment
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Accused Products
Abstract
An apparatus and method for testing a conflict monitor of the present invention includes a housing having a plurality of switches which can be manually manipulated in order to simulate the output of a controller. The conflict monitor is tested by disconnecting the traffic signal controller from the wiring harnesses and connecting the same harnesses to the test unit. The technician can then manipulate the switches in order to control the traffic signals and simulate the operation of the controller. When conflicting traffic signals are activated, the conflict monitor should punch out and put the traffic signals in a flashing state. The test unit includes a reset switch which is connected to the remote reset of the conflict monitor. After the conflict monitor punches out, the technician can simply press the reset button on the test unit without having to manually reset the conflict monitor.
29 Citations
17 Claims
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1. A device for testing components of a traffic control cabinet including a conflict monitor, a terminal panel having load switches and a flasher, controller cables, conflict monitor cables, a terminal strip, and field wiring which are all used in a traffic signal control cabinet for controlling the operation of a plurality of traffic signals in an intersection, the device comprising:
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a housing; at least one connector for connecting the device to the terminal panel of the traffic control cabinet in place of the controller; and a plurality of switches for selectively controlling the operation of the plurality of traffic signals, wherein the traffic signals can be controlled by the device while the conflict monitor is operating in order to simultaneously observe and verify the operation of the conflict monitor and the other components of the traffic control cabinet while controlling the operation of the traffic signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of testing the operation of the components of a traffic signal control cabinet used for controlling the operation of a plurality of traffic signals in a traffic intersection, the components of the traffic signal control cabinet including a terminal panel having load switches and a flasher, a controller, and a conflict monitor, the method comprising the steps of:
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disconnecting the controller from the terminal panel; providing a portable test unit having a plurality of switching elements; connecting the portable test unit to the terminal panel in place of the controller; simulating an output of the controller by selectively manipulating the plurality of switching elements of the portable test unit and thereby controlling the traffic signals and the components of the traffic control cabinet; and observing the conflict monitor to verify that the conflict monitor and the other components of the control cabinet are operating properly. - View Dependent Claims (12, 13, 14, 15)
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16. A method of testing portions of a traffic signal control cabinet for controlling the operation of a plurality of traffic signals in a traffic intersection, the traffic signal control cabinet having a terminal panel connected to a controller and a conflict monitor, comprising the steps of:
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providing a portable test unit having a plurality of switching elements; connecting the portable test unit to the terminal panel of the traffic signal control cabinet in place of the controller; controlling the operation of the plurality of traffic signals and the terminal panel by manipulating the plurality of switching elements of the portable test unit; and observing the conflict monitor and traffic signals to verify that the conflict monitor and other portions of the control cabinet operate properly. - View Dependent Claims (17)
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Specification