JPH07968B2 - Automatic door control method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of controlling an automatic door in an emergency.

(Prior art and its problems) In an automatic door that also serves as an evacuation port, it is necessary to make an emergency operation for evacuation or fire prevention in the event of a power failure due to a fire. In the past, restoration force such as a leaf spring was used. There is an emergency self-closing device that mechanically closes the automatic door in the event of a power failure.

However, in the case of such a mechanical self-closing device, although the function as a fire door is fulfilled, when evacuating, it is necessary for each person to manually open the door, and it is not possible to evacuate smoothly.

On the other hand, there is an automatic door that is backed up by a battery power source and electrically opened / closed, but it has the following problems.

(I) When fully opened during a power failure, it does not function as a fire door (ii) When fully closed during a power failure, it does not function as a smooth evacuation exit (iii) When normally operated during a power failure Human detection sensor rather than an automatic door drive device during a fire Is likely to lose its function first, but it will remain closed or open as the automatic door operation is not guaranteed at that time.

The present invention has been proposed to solve such a problem, and an object thereof is an automatic door capable of safely and smoothly evacuating in the event of a power failure due to a fire, and moreover, reliably serving as a fireproof door. To propose a control method of.

(Means for Solving Problems) An automatic door control method according to the present invention is an automatic door in which an AC power source and a battery power source are connected to an automatic door controller and which is opened and closed by an indoor and outdoor sensor, in the vicinity of the indoor and outdoor sensor. A temperature sensor such as a thermostat or thermistor is installed in the room. After a power failure due to a fire, the AC power supply is switched to the battery power supply and the automatic door is operated in the normal opening / closing mode. When the temperature reaches a level where operation cannot be guaranteed), the automatic door is operated at a low speed by the detection signal of the temperature sensor to close the automatic door.

(Operation) Normally, the AC power supply is connected to the controller and the indoor / outdoor sensor, and the indoor / outdoor sensor performs a normal opening / closing operation.

After a power failure due to a fire, the AC power supply is automatically switched to the battery power supply, and since the indoor and outdoor sensors have not lost their functions, the indoor and outdoor sensors can open and close as usual, and the initial evacuation can be performed safely and smoothly.

When the temperature near the indoor and outdoor sensors reaches a certain temperature or more over a certain time and reaches a temperature above which the operation of the indoor and outdoor sensors cannot be guaranteed, the temperature sensor detects this and the automatic door closes at a low speed. Even if there is an object in the indoor / outdoor sensor area, the door can be surely closed by the temperature sensor, which can surely serve as a fire door.

(Example) Hereinafter, the present invention will be described based on an illustrated example.

FIG. 1 shows an example of a drive device for carrying out the control method according to the present invention, which is an emergency battery device 1.
And an automatic door controller 2 for controlling the drive motor 3, and the emergency battery device 1 is composed of an AC power supply circuit 4, a rectifier circuit 5, a battery power supply circuit 6, and the like.

Indoor and outdoor sensors 7 and 8 are connected to the automatic door controller 2, and the automatic doors are opened and closed by the indoor and outdoor sensors 7 and 8. Inside or outside of this indoor / outdoor sensor 7,8
Install the temperature sensor 9 close to 7,8. The temperature sensor 9 is a thermal switch, a bimetal thermostat, or the like, which is turned on when the temperature of the indoor and outdoor sensors 7 and 8 cannot be guaranteed, or an indoor or outdoor sensor.
Thermocouples, thermistors, etc. that detect the temperature in the vicinity of 7, 8 are used.

In the former case, an ON signal is sent to the controller 2, and in the latter case, when the detected signal is compared with a set temperature in the controller 2 and reaches a certain temperature or higher, the self-closing mode described later is performed.

For the normal opening / closing mode, a known method of opening / closing the automatic door at high speed is used (see, for example, JP-A-60-13183). That is, when the outdoor sensor 7 or the indoor sensor 8 detects a human body or the like with the door closed, the door open signal and the high speed signal are input to the speed control circuit of the controller 2,
As a result, the motor 3 rotates at high speed, and the door opens and moves at high speed. The amount of movement of the door is detected by the number of rotations of the motor 3,
When the amount of movement reaches the open movement deceleration point, the motor 3 is decelerated, and when it matches the door stroke value, the motor 3 is stopped.

When a predetermined time has elapsed, the door closes and moves at a high speed according to the door closing signal and the high speed signal. As with the opening operation, it slows down when the movement amount of the door reaches the closing movement deceleration point, and stops when it matches the door stroke value. . When a human body or the like is detected during the closing operation, the motor 3 is stopped by a stop signal and the door is opened and moved at a high speed after a lapse of a certain time.

In the self-closing mode, the door is closed at a low speed by a door closing signal and a low speed signal (because it is dangerous at a high speed), and the door closing signal and the low speed signal are controlled by a detection signal of the temperature sensor 9. It is adapted to output to the second speed control circuit.

Similar to the normal opening / closing mode, the door stops when the movement amount of the door matches the door stroke value. If the door is opened and the hand is released from this closed state, the door is closed at a low speed again by the door closing signal and the low speed signal. The force to open the door by hand is about 6 to 7 kg.

In the above configuration, normally, the AC power is supplied to the controller 2 and the relay AR ₁ is operating.
When the contact AR _1-1 is in the open state, the power supply from the battery power supply to the controller 2 is stopped, and the battery 10 is charged through the transformer 11, the bridge 12, the constant current circuit and the like.

Also, since the a-contacts AR _1-2 are closed, the sensors 7 and 8
Since AC power is supplied, the sensors 7 and 8 perform normal opening / closing operations.

At the time of power failure due to fire, the following control is performed (second
See figure).

(I) Although a fire signal is generated by a heat or smoke sensor not shown, the fire signal is ignored and the AC door is used to normally open and close the automatic door.

(Ii) When a power failure occurs, the relay AR ₁ is deenergized, the contact b AR _1-1 is closed, and the selection switch SS is turned on, switching to the battery power supply.

(Iii) Since the sensors 7 and 8 are backed up by the battery power supply, the sensors 7 and 8 operate the automatic door in the normal opening / closing mode. Most people can evacuate safely and smoothly because it takes time to enter the next self-closing mode.

(Iv) When the temperature in the vicinity of the sensors 7 and 8 exceeds a certain temperature after a certain period of time, the temperature sensor 9 detects this and closes the automatic door at a low speed.

Since the sensors 7 and 8 have lost their functions, the door is opened by hand during evacuation or rescue, and the door is closed at a low speed when released.
Further, even if a person or an object is in the area of the sensors 7 and 8, the door is surely closed by the temperature sensor, and the fire prevention function is completed.

(Effects of the Invention) As described above, according to the present invention, when a power failure due to a fire occurs, the opening and closing operations are the same as usual until the indoor and outdoor sensors lose their functions, so initial evacuation is very smooth. This is done safely, and if the indoor and outdoor sensors lose their functions, the temperature sensor will always close the door, so smoke prevention.
It can also fully function as a fire door.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an apparatus for carrying out the control method according to the present invention, and FIG. 2 is a flow chart thereof. 1 ... Emergency battery device 2 ... Automatic door controller, 3 ... Drive motor, 4 ...
… AC power supply circuit, 5 …… rectifier circuit 6 …… Battery power supply circuit 7,8 …… Indoor / outdoor sensor, 9 …… Temperature sensor, 10 ……
Buttery, 11 ... transformer 12 ... Bridge circuit

Claims (1)

[Claims] 1. A method for controlling an automatic door in which an AC power source and a battery power source are connected to an automatic door controller, and which is opened and closed by an indoor and outdoor sensor, wherein a temperature sensor is installed in the vicinity of the indoor and outdoor sensor, and an AC is provided after a power failure. The feature is that the automatic door is operated in the normal opening / closing mode by switching from the power supply to the battery power supply, and when the temperature near the indoor / outdoor sensor exceeds a certain temperature, the automatic door is operated in the self-closing mode in which the detection signal of the temperature sensor closes the door at low speed And how to control automatic doors.