Sensor system

• US 20030047670A1
• Filed: 09/13/2001
• Published: 03/13/2003
• Est. Priority Date: 09/13/2001
• Status: Active Grant

• Current Assignee: Miller Edge, Inc.
• Original Assignee: Miller Edge, Inc.
• Inventors: Anderson, Michael, Leigh, Gary, Castello, Timothy, Miller, Bearge D.
• Granted Patent: US 6,683,296 B2
• Time in Patent Office: Days
• US Class Current: 250/221
• CPC Class Codes: E05F 15/43 responsive to disruption of energy beams, e.g. light or sound
• CPC Class Codes: E05F 2015/436 the beam being parallel to the wing edge
• CPC Class Codes: E05Y 2900/00 Application of doors, windows, wings or fittings thereof
• CPC Class Codes: E05Y 2900/106 for garages
• CPC Class Codes: E06B 2009/6836 sensing obstacle

Abstract

A sensing edge for controlling movement of a door by actuation of a device upon an external force being applied to the sensing edge includes an elongated generally flexible tubular sheath secured to the leading edge of the door. The sheath has a longitudinal axis generally parallel to a leading edge of the door and includes an elongated hollow cavity extending generally parallel to the longitudinal axis, a first open end and a second open end. The sensor system includes a transmitter near the first end of the sheath for transmitting a signal through the cavity toward the second end of the sheath. The sensor system also includes a receiver near the second end of the sheath in alignment with the transmitter for detecting a signal at the second end and for generating an output signal upon detection of an absence of the signal when the passage of the signal through the cavity is blocked. The sensor system also includes a control circuit coupled to the receiver for receiving the output signal from the receiver and for sending a failure signal to the device only if no signal is received by the receiver for a predetermined time.

Claims

1. A sensor system for controlling movement of a door moving in a first direction by actuation of a device, the sensor system comprising:

(a) an elongated generally flexible tubular sheath secured to a leading edge of the door, the sheath having a longitudinal axis generally parallel to the leading edge of the door, and including an elongated hollow cavity extending generally parallel to the longitudinal axis, a first open end and a second open end;

(b) an infrared transmitter proximate the first end of the sheath for transmitting an infrared signal toward the second end of the sheath through the cavity;

(c) an infrared receiver proximate the second end of the sheath in alignment with the infrared transmitter for detecting the infrared signal at the second end, and for generating an output signal upon detecting an absence of the infrared signal when the passage of the infrared signal through the cavity is blocked; and

(d) a control circuit coupled to the infrared receiver for receiving the output signal from the infrared receiver and for sending a failure signal to the device only if no infrared signal is received by the receiver for a predetermined time period.

2. The sensor system of claim 1 wherein the output signal comprises a series of pulses each having a substantially similar width and with a predetermined time between pulses, said pulses being generated in the absence of the infrared signal detected by the receiver.

3. The sensor system of claim 2 wherein the control circuit includes a microcontroller having at least one input for receiving the output signal and at least one output for sending the failure signal, the microcontroller including a program for counting continuously repeating pulses of the output signal until a predetermined number of continuously repeating pulses accumulates and for causing the microcontroller to send the failure signal to the device.

4. The sensor system of claim 1 wherein the infrared signal and output signal are both binary.

5. The sensor system of claim 1 wherein the control circuit includes a microcontroller having at least one input for receiving the output signal.

6. The sensor system of claim 1 wherein the sheath includes a first support element and a second support element each extending from opposite edges of the sheath for securing the sheath to the door, and a second elongated hollow cavity for use as a wire way extending between the first support element, the second support element.

7. The sensor system of claim 1 wherein the infrared transmitter transmits the infrared signal at a frequency of between about 28 kHz and about 59 kHz.

8. A sensor system for controlling movement of a door moving in a first direction by actuation of a device, the sensor system comprising:

(a) an elongated generally flexible tubular sheath secured to a leading edge of the door, the sheath having a longitudinal axis generally parallel to the leading edge of the door, and including an elongated hollow cavity extending generally parallel to the longitudinal axis, a first open end and a second open end;

(b) a light wave transmitter proximate the first end of the sheath for transmitting light waves toward the second end of the sheath through the cavity;

(c) a light wave receiver proximate the second end of the sheath in alignment with the light wave transmitter for detecting the light waves at the second end, and for generating an output signal upon detecting an absence of the light waves when the passage of the light waves through the cavity is blocked; and

(d) a control circuit coupled to the light wave receiver for receiving the output signal from the light wave receiver and for sending a failure signal to the device only if no light signal is received by the receiver for a predetermined time period.

9. The sensor system of claim 8 wherein the output signal comprises a series of pulses each having a substantially similar width and with a predetermined time between pulses, said pulses being generated in the absence of the light wave signal detected by the receiver.

10. The sensor system of claim 9 wherein the control circuit includes a microcontroller having at least one input for receiving the output signal and at least one output for sending the failure signal, the microcontroller including a program for counting continuously repeating pulses of the output signal until a predetermined number of continuously repeating pulses accumulates and for causing the microcontroller to send the failure signal to the device.

11. The sensor system of claim 8 wherein the output signal is binary.

12. The sensor system of claim 8 wherein the control circuit includes a microcontroller having at least one input for receiving the output signal.

13. The sensor system of claim 8 wherein the sheath includes a first support element and a second support element each extending from opposite edges of the sheath for securing the sheath to the door, and a second elongated hollow cavity for use as a wire way extending between the first support element, the second support element.

14. In a sensing edge for controlling movement of a door moving in a first direction by actuation of a device upon force being applied to the sensing edge, the sensing edge comprising:

an elongate generally flexible tubular sheath secured to a leading edge of the door and having a longitudinal axis, the sheath including an elongated hollow cavity extending generally parallel to the longitudinal axis, a first open end and a second open end;

a transmitter for transmitting light toward the second end of the sheath through the cavity and generally parallel to the longitudinal axis, the passage of the light through the cavity being blocked when external pressure is applied to a portion of the sheath to compress the sheath into the cavity; and

a receiver for detecting the light at the second end, and for generating an output signal upon detecting an absence of the light when the passage of the light through the cavity is blocked;

wherein the improvement comprises a control circuit coupled to the receiver for receiving the output signal from the receiver and for sending a failure signal to the device only if no light signal is received by the receiver for a predetermined time period.