JP4353723B2 - Elevator car door control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator car door control device that ensures the safety of passengers in the event of a power failure accompanying the occurrence of a fire in a building.
[0002]
[Prior art]
According to Article 112, Paragraphs 9 and 14, Item 2 of the Building Standards Act Construction Order for Buildings, “Elevator hoistway shall be fireproofed with other parts of the building and fire prevention equipment” and “Elevator boarding / exiting lobby shall be In order not to be regarded as a part of the road, it must be separated from the entrance / exit lobby hoistway. "
[0003]
Therefore, in the elevator system, a fire shutter or a door with smoke / flame proofing performance linked to a smoke detector installed on the floor is installed immediately before the elevator landing door, based on the Building Standard Act construction order mentioned above. It is customary.
[0004]
By the way, when a building fire occurs, a fire control operation method is used in which the car is forced to go straight to a predetermined evacuation floor under the operation control command of the elevator main control device, and the passenger is taken down and stopped. .
[0005]
However, in the event of a fire in a building, it is necessary not only to go straight to the evacuation floor, take the passengers down and stop, but also to fully consider the possibility of causing other troubles. There is. For example, during a fire control operation, the car may return to the refuge floor and a power failure may occur while the door is open or when the door is opened or closed. When a power failure occurs, generally the elevator control power is lost and the car door remains open. At this time, measures have been taken to prevent smoke and disaster by using the fire shutter etc. mentioned above, but the car may become a chimney in the hoistway if the car door is left open. It becomes dangerous.
[0006]
On the other hand, a large-capacity battery control power supply is installed in the machine room above the hoistway, and when a power failure occurs in the building, the car is stopped at the specified floor or the nearest floor without stopping and the passengers are taken down. An automatic landing device has been developed. Therefore, if such an automatic landing device is installed, it is possible to perform a door closing operation using a battery even if a power failure occurs while the door is opened and closed in the event of a fire.
[0007]
However, in practice, the automatic landing apparatus equipped with a large-capacity battery control power supply is very expensive, so it is not always installed in all elevators, but rather, elevators that are not installed are very Many.
[0008]
[Problems to be solved by the invention]
Therefore, in an elevator that is not equipped with an automatic landing device as described above, if a power failure occurs while the door is open or the door is opened and closed, the door opening and closing operation stops at the time of the power failure, so the car door is opened. This may lead to the expansion of disasters.
[0009]
The present invention has been made in view of the above circumstances, and provides an elevator car door control device that reliably closes a car door using a battery power source having a necessary minimum capacity in the event of a power failure accompanying a fire. With the goal.
[0010]
[Means for Solving the Problems]
(1) In order to solve the above-mentioned problems, the elevator car door control device according to the present invention forcibly stops the car at a predetermined evacuation floor when a fire of a building or the like occurs, and stops the subsequent operation. In the elevator, the power supply detection means for detecting the power failure of the battery power supply and the commercial power supply having the minimum capacity necessary for the door closing operation of the car is provided, and when the power failure detection is detected by this power supply detection means, the power line external having a door control power supply circuit connected to the battery power source in place of the commercial power supply, the door opening detecting unit that operates when the door open state input from the fire detection unit and the external operating in fire detection signal inputted from the outside When it is determined that there is a power outage from the signal input means and the detection output of the power supply detection means, and a condition signal for the occurrence of a fire and a door open is received from the external signal input means , a drive permission signal is output. And door control means for driving the door motor by supplying driving power from the battery power supply connected to the power supply line and closing the door.
[0011]
According to the present invention configured as described above, when the commercial power supply fails, the door control power supply circuit connects the battery power supply to the power supply line instead of the commercial power supply and sets the door motor in an operable state. On the other hand, the external signal input means detects a condition signal indicating whether a building fire has occurred and the car door is open. And the door control means drives the door motor using battery power and performs the door closing operation under the conditions of commercial power failure, building fire, and car door open state. Even when the vehicle is resting in a state, the door can be fully closed using the battery power source, and the car can be prevented from becoming a chimney of the hoistway.
[0012]
(2) In addition, the present invention is newly built in the passenger detection means for detecting passengers in the car and the emergency call button in the car, and has a battery in the event of a power failure of the commercial power supply. A passenger is left in the car by providing a light-emitting means that is turned on when the passenger detection means detects that the passenger is left in the car and is urged to operate the emergency call button. Even if the situation occurs, the emergency call button is promptly operated by the light emission of the light emitting means, so that it is possible to notify the outside that the passenger is left in the car.
[0013]
Further, the present invention comprises means for outputting message data for prohibiting passengers from entering the car and means for outputting voice messages in the car. When receiving a fire and door condition signal from the external signal input means, if a message prohibiting entry into the car is generated prior to the door closing operation, the passenger gets in the resting car A state where the door is closed can be avoided.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a block diagram showing an embodiment of an elevator car door control device according to the present invention.
[0016]
This car door control device includes a door control power supply circuit 1, an external signal input means 2 for detecting a door open / close state at the time of a fire, and a door controller 3 for driving the car door to open / close.
[0017]
The door control power supply circuit 1 has a function of supplying the door controller 3 with the required power of a door control battery (battery power supply) instead of the commercial power supply 11 in the event of a power failure of the commercial power supply 11. Specifically, the commercial power source 11 is connected to a power source detection relay 12 as commercial power source detection means for detecting establishment of power source.
[0018]
An a contact 12a that makes up when the power detection relay is turned on is connected to one end of the power detection relay 12, and a break occurs between the other end of the a contact 12a and the other end of the power detection relay 12 when the relay is turned on. The serial circuit of 1 b contact 12b and the door control battery (battery power source) 13 is connected. The door control battery 13 is installed, for example, in the upper part of the car and has a power capacity necessary to control the operation of the door motor 31 of, for example, about 50 W to 100 W connected to the door controller 3. It has a backup function instead.
[0019]
Further, between the first b contact 12b and the serial circuit of the door control battery 13, a second b contact 12b ′ that breaks when the relay is turned on, a floor portion of the car, and the like are provided in the car. A serial circuit comprising an emergency call light-emitting element 15 built in an emergency call button (not shown) on the operation panel in the car and passenger detection means 14 for detecting the presence or absence of a passenger is connected.
[0020]
This passenger detection means 14 is, for example, a load detector that detects the weight of the passenger, an optical detector that optically detects the passenger, or a passenger detection limit switch that detects and detects that the passenger is on board, and other detection means. Is used. Further, the emergency call light emitting element 15 has a function of notifying passengers left in the car at the time of a power outage of the emergency call button portion by light emission and, as a result, prompting the operation of the emergency call button.
[0021]
Further, a third b contact 12b ″ that breaks when the power detection relay 12 is turned on is connected to the power line.
[0022]
The external signal input means 2 is a signal source (not shown) that outputs a signal of a required level, receives an instruction from the outside along with the door opening / closing operation, and is turned on when the door is open, and when the door is fully closed There are provided a door opening detection unit 22 to be turned off and a fire detection unit 23 to be turned on in response to an instruction from a building fire detector or a control device in the event of a building fire.
[0023]
As the signal source, the door control battery 13 and other power sources are used. Moreover, although the door open detection part 22 and the fire detection part 23 were connected serially and were introduced into the door controller 3, you may introduce into the door controller 3 each separately.
[0024]
When the door controller 3 detects a power failure from the operation state of the third b contact 12b ″, the power failure presence / absence determination unit 32 that determines whether the commercial power supply 11 is out of power from the operation state of the third b contact 12b ″, The operation state of the door is monitored from the signal output from the external signal input means 2, and the power failure monitoring module 33 for sending out the monitoring result, the determination result output from the power failure presence / absence determination unit 32, and the power failure monitoring module 33. The door motor control unit 34 outputs a drive permission signal in response to various monitoring commands (not shown) received from the monitoring results from the vehicle, and for supplying drive power to the door motor 31 based on the drive permission command from the door motor control unit 34 For example, it is composed of an inverter circuit composed of MOS-FET elements and the like and an inverter control unit 35 for executing the circuit control. .
[0025]
Note that the power failure presence / absence determination unit 32, the power failure monitoring module 33, the door motor control unit 34, and the like can be configured not only in electrical hardware but also in software using a CPU.
[0026]
Next, the operation of the elevator door control apparatus as described above will be described with reference to FIG.
[0027]
In the state where the commercial power supply 11 is normally supplied, the required operating voltage is supplied to the power supply detection relay 12, so that the power supply detection relay 12 determines that the power supply is established and the contact a 12a of the relay 12 is turned on. Set to. Therefore, required power is supplied from the commercial power supply 11 to the inverter control unit 35 of the door controller 3 through the contact a 12a.
[0028]
At this time, the door motor control unit 34 confirms the state of the control system of the entire elevator system based on the output from the power failure presence / absence determination unit 32 and various commands, and supplies a drive permission signal to the inverter control unit 35.
[0029]
When the inverter control unit 35 receives the drive permission signal from the door motor control unit 34, the inverter control unit 35 performs necessary power control and drives the door motor 31.
[0030]
On the other hand, when a fire breaks out of the building, the elevator main control unit enters the fire control operation system, forcibly directs the passengers in the car to a predetermined evacuation floor, puts the passengers down and puts them into a state of resting When the commercial power supply 11 is lost at that time, that is, when a power failure occurs, the power detection relay 12 is turned off, so that the contact a 12a of the relay 12 is turned off, and the first contact b 12a , The second b contact 12b ′ and the third b contact 12b ″ are turned on. As a result, the required power is sent from the door control battery 13 to the inverter control unit 35 through the first b contact 12b. Enter the backup system.
[0031]
At this time, in the door controller 3, the power failure presence / absence determination unit 32 determines that a power failure has occurred from the operating state of the third b contact 12b "(S1). When it is determined that a power failure has occurred, the door is fully closed. (S2) Whether the car door is in the fully closed state is determined by the power failure monitoring module 33 from the output of the external signal input means 2. That is, the external signal input means 2 Upon receiving a fire occurrence signal from the building side, the fire detection unit 23 is turned on, and when the door open detection unit 22 is not fully closed, that is, when the door is open, the fire detection unit 23 is turned on. Therefore, when the power failure monitoring module 33 receives a fire / door open condition signal from the output of the external signal input means 2, it determines that the door is not fully closed, and the third b-contact Movement of 12b " Check out the power failure state from the state, and sends a door closing command by battery door motor control unit 34.
[0032]
Since the door motor control unit 34 has received a power outage state from the power outage presence / absence determination unit 32 and has received from the power failure monitoring module 33 that the door is not in a fully closed state, the inverter control unit 35 is permitted to drive to close the door. Send a signal. The inverter control unit 35 performs power supply control using the power of the door control battery 13 for the first time, drives the door motor 31 and performs a door closing operation (S3). The door motor control unit 34 determines from the power failure monitoring module 33 whether the door is fully closed (S4). As a result of this determination, if the door is not yet fully closed, the door closing drive permission signal is continuously sent to the inverter control unit 35. On the other hand, when the door is fully closed, the operation of the car is suspended.
[0033]
Therefore, according to the embodiment as described above, even when a power failure occurs due to the fire of a building and the door of the car is not fully closed, the open state of the door is reliably detected, and a small capacity Since the door control battery 13 is used to close the door, the car door does not become a chimney of the hoistway while the car door is open, and damage can be prevented from expanding.
[0034]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
[0035]
(1) In the above embodiment, an example has been described in which the car door is fully closed under a predetermined condition in the event of a power failure due to the occurrence of a fire in the building. May be left behind.
[0036]
Accordingly, in the present invention, the passenger detection limit switch, for example, the passenger detection means 14 is operating in spite of a power failure, so that the emergency call light emitting element in the emergency call button is used by using the power of the door control battery 13. Illuminate 15 and illuminate the emergency call button in the dark car. In other words, while urging passengers who are left in the car to operate the emergency call button, when the emergency call button is operated, it is an emergency situation. Notify that there are passengers in the car by using an external monitoring room or other alarm device.
[0037]
Therefore, even when a passenger is trapped in the car with the door fully closed, the emergency call light-emitting element 15 is turned on using the power of the door control battery 13 in the event of a power failure due to the fire of the building. By prompting the operation of the call button, the safety of passengers can be ensured and a serious accident can be avoided in advance.
[0038]
(2) In the above embodiment, the example of automatically driving the door fully closed at the time of a power failure due to the occurrence of a fire in the building has been described. However, when the car door is normally open at the time of a power failure, Even if the car is resting on the evacuation floor, there may be passengers who accidentally get on the car.
[0039]
Therefore, in the present invention, as shown in FIG. 3, the message data output means 36 is connected to either the power failure monitoring module 33 or the door motor control unit 34, and a door closing command is sent from the power failure monitoring module 33 to the door motor control unit 34. The door motor control unit 34 has received a power failure state from the power failure presence / absence determination unit 32 and a message output command from a predetermined time before the door motor control unit 34 sends a door closing drive permission signal. The data is output to the data output means 36. The message data output means 36 uses the battery power of the door control battery 13 as shown in FIG. 4 to read a message stored in advance in a memory, for example, from a guidance speaker 37 usually installed in the car. For example, a configuration may be adopted in which the message “Close the door. Don't get in the car” is repeated a plurality of times (S11, S12), and then the door is fully closed.
[0040]
In addition, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Further, each of the above embodiments includes various higher-level and lower-level inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, the omitted part is used when the extracted invention is implemented. Is appropriately supplemented by well-known conventional techniques.
[0041]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an elevator car door control device that can reliably fully close a car door using a battery power source having a necessary minimum capacity in the event of a power failure accompanying a fire.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of an elevator car door control device according to the present invention.
FIG. 2 is a flowchart for explaining the operation of the elevator car door control device shown in FIG. 1;
FIG. 3 is a partial configuration diagram illustrating another embodiment of the elevator car door control device.
FIG. 4 is a flowchart for explaining the operation in the other embodiment shown in FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Door control power supply circuit, 2 ... External signal input means, 3 ... Door controller, 11 ... Commercial power supply, 12 ... Power supply detection relay, 13 ... Door control battery, 14 ... Passenger detection means, 15 ... Emergency call light emitting element, DESCRIPTION OF SYMBOLS 22 ... Door open detection part, 23 ... Fire detection part, 31 ... Door motor, 32 ... Power failure presence determination part, 33 ... Power failure monitoring module, 34 ... Door motor control part, 35 ... Inverter control part, 36 ... Message data output means, 37 ... Guide speaker.

Claims (3)

In an elevator that performs fire control operation that forcibly stops the car at the designated evacuation floor and stops the subsequent operation in the event of a fire in a building, etc.
A power source detecting means for detecting a power failure of a battery power source and a commercial power source having a minimum capacity necessary for the door closing operation of the car is provided, and when the power failure is detected by the power source detecting means, the power line is connected to the commercial power source. A door control power supply circuit connected to the battery power supply instead of ,
An external signal input means having a fire detection unit that operates in response to a fire detection signal input from the outside and a door open detection unit that operates in a door open state input from the outside;
When it is determined that there is a power failure from the detection output of the power supply detection means, and a condition signal of a fire occurrence and door open state is received from the external signal input means , a drive permission signal is output and connected to the power supply line the drives the door motor by a driving power supplied from the battery power source, the car door control device for an elevator, characterized in that a door control unit causes closing the door are. In the elevator car door control device according to claim 1,
Passenger detection means for detecting passengers in the car, built in an emergency call button in the car, and connected to the battery power supply at the time of power failure of the commercial power supply, the passenger detection means is left in the car An elevator car door control device, comprising: a light-emitting means that is turned on when it is detected and prompts the operation of the emergency call button. In the elevator car door control device according to claim 1 or 2,
Means for outputting message data for prohibiting passengers from entering the car and means for outputting the message by voice in the car, and the external signal input means at the time of a power failure accompanying the occurrence of a fire in a building An elevator car door control device that generates a message prohibiting entry into a car prior to the door closing operation when a fire occurrence and door open condition signal is received from the car.

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