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US 5,884,237 AGranted
Automatic door system with self-diagnosing function
AssigneeNabco Limited
InventorsHisayuki Kanki, Naoki Taguchi
Life of this patent
Estimating the term…
Abstract
An automatic door system includes a door which id driven to open and close by a motor. A sensor senses an object which approaches or leaves the door. A control section controls the motor in accordance with a signal supplied from the sensor. The control section includes a CPU which examines the motor, the sensor and the control section for failure or malfunction, and also an EEPROM which stores the result of examination made by the CPU. The result of examination stored in the EEPROM is outputted to a Handy Terminal or a personal computer.
Claims26
An automatic door system with self-diagnosing function, comprising:
- a door;
- a door driving arrangement including a motor, for driving said door to open and close;
- a sensor for sensing an object approaching and leaving said door;
- and
- a control unit including a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- wherein said control section includes failure detecting means for examining said motor, said sensor and said control section for failure or malfunction thereof, and a memory section for storing the result of examination made by said failure detecting means;
- and
- said automatic door system further includes an output unit for providing, on the basis of the results of examination stored in said memory section, an indication of failure or malfunction individually for any of said motor, said sensor and said control section which is failing or malfunctioning.
5 more elements
An automatic door system with self-diagnosing function, comprising:
- a door;
- a motor for driving said door to open and close;
- a control unit for controlling said motor;
- and
- a sensor for sensing an object approaching and leaving said door;
- wherein:
- said control unit includes a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- said control section includes failure detecting means for examining said motor, said sensor and said control section for failure or malfunction thereof;
- and
- said failure detecting means interrupts the driving of said door so that said door can be manually opened or closed, when said failure detecting means detects failure or malfunction of said door system.
7 more elements
An automatic door system with self-diagnosing function, comprising:
- a door;
- a motor for driving said door to open and close;
- a control unit for controlling said motor;
- and
- a sensor for sensing an object approaching and leaving said door;
- wherein:
- said control unit includes a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- said control section includes failure detecting means for examining said motor, said sensor and said control section for failure or malfunction thereof, and a memory section for storing the result of examination made by said failure detecting means;
- and
- said automatic door system further includes an output unit for outputting an indication of steps to be taken in order to identify the cause of detected failure or malfunction on the basis of the result of examination stored in said memory section.
7 more elements
An automatic door system with self-diagnosing function, comprising:
- a door;
- a motor for driving said door to open and close;
- a control unit for contolling said motor;
- and
- a sensor for sensing an object approaching and leaving said door;
- wherein:
- said control unit includes a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- said control section includes failure detecting means for examining said motor, said sensor and said control section for failure or malfunction thereof, and a memory section for storing the result of examination made by said failure detecting means together with the time of occurrence of a detected failure or malfunction;
- and
- said automatic door system further includes an output unit for outputting the result of examination and the time of occurrence of said detected failure or malfunction stored in said memory section.
7 more elements
An automatic door system with self-diagnosing function, comprising:
- a door;
- a motor for driving said door to open and close;
- a control unit for controlling said motor;
- and
- a sensor for sensing an object approaching and leaving said door;
- wherein:
- said control unit includes a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- said automatic door system further includes a motor temperature monitoring section for monitoring the temperature of said motor;
- said control section includes failure detecting means for making a judgment that said motor is failing or malfunctioning when the motor temperature as monitored by said motor temperature monitoring section is above a predetermined value;
- and
- when said failure detecting means judges that said motor is failing or malfunctioning, said failure detecting means permits said door to be opened or closed with restricted operating parameters.
8 more elements
An automatic door system with self-diagnosing function, comprising:
- a door;
- a motor for driving said door to open and close;
- a control unit for controlling said motor;
- and
- a sensor for sensing an object approaching and leaving said door;
- wherein:
- said control unit includes a control section for controlling said motor in accordance with a signal supplied thereto from said sensor;
- said automatic door system further includes a motor current monitoring section for monitoring the current flowing through said motor;
- said control sections includes failure detecting means for making a judgment that said motor is failing or malfunctioning when the current as monitored by said motor current monitoring section is above a predetermined value;
- and
- when said failure detecting means judges that said motor is failing or malfunctioning, said failure detecting means permits said door to be opened or closed with limited operating parameters.
8 more elements
Dependencies are inferred from the claim text.