초록 ▼

An safety control system especially useful for controlling the irrigation of crops. The system includes a transmitter having an extended range over two miles. A repeat cycle timer provides a repetitive time delayed input signal to the transmitter which transmits a signal while an irrigation system i

An safety control system especially useful for controlling the irrigation of crops. The system includes a transmitter having an extended range over two miles. A repeat cycle timer provides a repetitive time delayed input signal to the transmitter which transmits a signal while an irrigation system is operational. A receiver for receives the signal from the transmitter, and a time delay relay latches upon receipt of the signal by the receiver to close a circuit and provide power to a pump unit for a fixed amount of time. If the time delay relay times out without receiving a signal from the transmitter, the irrigation pump unit is shut off.

대표청구항 ▼

1. A safety control system comprising: a transmitter; a power source for providing power to the transmitter; a repeat cycle timer that provides a repetitive input cycle separated by a repetitive time delay, the input cycle causes a circuit to close and cause the transmitter that is powered by t

1. A safety control system comprising: a transmitter; a power source for providing power to the transmitter; a repeat cycle timer that provides a repetitive input cycle separated by a repetitive time delay, the input cycle causes a circuit to close and cause the transmitter that is powered by the power source to transmit a signal during the input cycle; a receiver for receiving the signal from the transmitter; a power source for providing power to the receiver; a time delay relay that latches upon receipt of the signal by the receiver to close a circuit and provide power to a pump unit for a fixed amount of time, and the time delay relay continues to remain latched upon repetitive receipt of the signal by the receiver thereby continuing to close a circuit and continuing to provide power to the pump unit for a subsequent fixed amount of time. 2. The safety control system of claim 1 in which said transmitter can transmit said signal a range of more than one mile. 3. The safety control system of claim 2 in which said transmitter is not required to be in the line of sight of said receiver. 4. The safety control system of claim 1 in which said transmitter can transmit said signal a range of two to five miles. 5. The safety control system of claim 1 in which said repeat cycle timer provides said repetitive input cycle for about two seconds and said repetitive time delay for about thirty seconds. 6. The safety control system of claim 5 in which said fixed amount of time is about one-hundred seconds. 7. The safety control system of claim 1 in which said fixed amount of time is about one-hundred seconds. 8. A safety control system comprising: a transmitter that can transmit a signal a range of more than two miles; a power source for providing power to the transmitter; a repeat cycle timer that provides a repetitive input cycle for two seconds separated by a repetitive time delay of thirty seconds, the input cycle causes a circuit to close and cause the transmitter that is powered by the power source to transmit the signal during the input cycle; a receiver for receiving the signal from the transmitter; a power source for providing power to the receiver; a time delay relay that latches for one-hundred seconds upon receipt of the signal by the receiver to close a circuit and provide power to a pump unit; whereby the time delay relay will time out after one-hundred seconds if the signal is not received by the receiver and power to the pump unit will be removed. 9. A safety control system comprising: a transmitter; a power source for providing power to the transmitter; a three position switch having a start position, an off position, and a run position in which engaging the switch in the start position causes the transmitter to transmit a signal on a first channel and engaging the switch in the run position causes the transmitter to transmit a signal on a second channel; a repeat cycle timer that provides a repetitive input cycle separated by a repetitive time delay, the input cycle causes a circuit to close and cause the transmitter that is powered by the power source to transmit the signal on the second channel only during the input cycle; a receiver for receiving the signal on the first channel and the signal on the second channel from the transmitter; a power source for providing power to the receiver; a first time delay relay that latches upon receipt of the signal on the first channel by the receiver to close a circuit and provide a first fixed amount of time for the receipt of the signal on the second channel; a second time delay relay that initially latches only upon receipt of the signal on the second channel by the receiver within the first fixed amount of time and continues to latch upon the additional receipt of the signal on the second channel by the receiver to close a circuit and provide power to a pump unit for a second fixed amount of time.