JP5226208B2 - Emergency elevator transmission control system - Google Patents

Description

  The present invention relates to an emergency elevator transmission control system.

  An emergency elevator is an elevator that is obliged to be installed in a building that exceeds 31m in height based on Article 34 of the Building Standards Act. Although this emergency elevator can be used as a normal elevator during normal times, it is used for fire fighting and rescue activities in the event of a fire, so it is installed based on specifications different from those of normal elevators.

  For example, in order to be able to carry the necessary fire extinguishing equipment and fire fighters, the car has minimum dimensions and capacity, and the emergency elevator is called back to the landing on the evacuation floor (usually the first floor). The installation of a “call-back button” for this purpose is prescribed. In addition, a fire-fighting operation switch that can be operated with a dedicated key is installed in the car, and when this fire-fighting operation switch is switched from “OFF” to “ON”, the car can be used regardless of whether there is a landing call on another floor. Can be moved directly to the target floor (primary fire-fighting operation), or the car can be moved up and down with the door open (secondary fire-fighting operation) (see Patent Document 1).

  Emergency elevators may also be installed with transmission control systems based on specifications different from normal elevators. 4 is an explanatory diagram showing a configuration example of a transmission control system for a normal elevator, and FIG. 5 is an explanatory diagram showing a configuration example of a transmission control system for a conventional emergency elevator.

  In FIG. 4, a machine room 2 is provided above the hoistway 1, and an elevator control device 3 and a hoisting machine 4 that is driven and controlled by the elevator control device 3 are installed in the machine room 2. Yes. An intermediate portion of a rope 5 is wound around the hoisting machine 4, and a car 6 and a counterweight 7 are attached to one end side and the other end side of the rope 5, respectively. A car operation panel 8 is disposed in the passenger car 6.

  A landing display device 10 is installed at the landing on each floor, and the landing display device 10 is provided with a landing call button 11 and a car position indicator 12. The hall display device 10 includes a communication control circuit 13, which is connected to the elevator control device 3 through a serial transmission path 14.

  The communication control circuit 13 is for enabling the hall display device 10 to perform a transmission / reception operation with the elevator control device 3. For example, when an elevator user presses a floor call button 11 (either an upper button or a lower button) on a certain floor, the communication control circuit 13 transmits a hall call signal based on the pressed button to the elevator control device 3. To do. When the elevator control device 3 receives this hall call signal, it registers this hall call and transmits a lighting command for the hall call button 11 pressed by the elevator user to the communication control circuit 13. Accordingly, the hall call button 11 is lit until the car 6 arrives.

  Further, the elevator control device 3 sends a display control signal for displaying the current car position of the car 6 (which can be detected by the number of revolutions of the hoist 4) to the communication control circuit 13 of all floors. Send to. As a result, the current car position is displayed on the car position indicator 12 of the hall display device 10 of all floors. The illustrated example shows that the car 6 is currently rising near the second floor. As described above, in the normal elevator, the hall display device 10 on each floor is configured to perform a transmission / reception operation with the elevator control device 3 by the built-in communication control circuit 13.

  On the other hand, in the case of an emergency elevator, as shown in FIG. 5, the hall display device 10 </ b> A of each floor is transmitted and received with the elevator control device 3 by the communication control circuit 13 </ b> A installed in the hoistway 1. Is supposed to do. Thus, the reason why the communication control circuit 13A is installed in the hoistway 1 that is outside the hall display device 10A is that if the communication control circuit 13A is built in the hall display device 10A, This is because there is a high possibility that the landing display device 10A covers the water due to the water discharge accompanying the fire fighting activities and the communication control circuit 13A does not function normally.

  Here, since the hall call on each floor should be invalidated during a fire fighting activity, a signal when the user presses the hall call button 11 on each floor reaches the elevator control device 3. There is no problem even if you do not. However, since the current position of the car 6 is important information for fire fighting activities, it is necessary to secure a transmission function from the elevator control device 3 to the car position indicator 12. Therefore, the communication control circuit 13A is installed in the hoistway 1 without being incorporated in the hall display device 10A.

In the case of an emergency elevator, unlike a normal elevator, a fire fighting operation switch 9 is provided on a car operation panel 8 of the car 6. This fire-fighting operation switch 9 is normally “OFF” and can be operated in the normal operation mode, but the firefighter inserts a dedicated key into the groove of the fire-fighting operation switch 9 and turns it to a predetermined position. "On" and operation in emergency operation mode becomes possible. The operation signal from the fire fighting operation switch 9 is transmitted to the elevator control device 3 via a transmission path in the tail cord (not shown).
Japanese Patent Laid-Open No. 7-247076

  However, since the communication control circuit 13A is installed in the hoistway 1 in each floor in the configuration example shown in FIG. 5, the installation man-hour and the wiring work man-hour increase accordingly. These increases in man-hours are significant in high-rise buildings with a large number of floors, which may be a factor that cannot be ignored.

  Further, since the appearance shape is different between the hall display device 10 incorporating the communication control circuit 13 and the hall display device 10A where the communication control circuit 13A is installed outside, the design in the hall is unified. There is also a negative design design factor that makes it impossible.

  The present invention has been made in view of the above circumstances, can prevent an increase in the installation man-hours and wiring work man-hours of the communication control circuit, and is designed for each hall display device of a normal elevator and an emergency elevator. It is an object of the present invention to provide an emergency elevator transmission control system that can unify the system.

  As means for solving the above-mentioned problems, the invention according to claim 1 includes an elevator main control device having two operation modes of a normal operation mode and a fire fighting operation mode, and the elevator main control device and a serial transmission line. Built-in communication control circuit to be connected, and via the communication control circuit, a hall display button for each floor having a hall call button and a car position indicator for performing transmission and reception operations with the elevator main control device, and on the serial transmission path When the elevator main control device operates an elevator in the fire fighting operation mode, the elevator main control device is directed from the landing display device side to the elevator main control device side. And a one-way transmission cutoff circuit that cuts off only the signal.

  The invention according to claim 2 is the operation mode detection circuit according to claim 1, wherein the one-way transmission cutoff circuit detects whether the operation mode is the normal operation mode or the firefighting operation mode. When the operation mode detection circuit detects the normal operation mode, a signal heading from the landing display device side to the elevator main control device side, and a heading from the elevator main control device side to the landing display device side When the two-way signal is allowed to pass and the operation mode detection circuit detects the firefighting operation mode, the signal from the landing display device side to the elevator main control device side is blocked. And a signal passage control circuit that allows passage of a signal from the elevator main control device side to the hall display device side. To.

  According to a third aspect of the present invention, in the second aspect of the present invention, the signal passing control circuit includes a driver element, an optical signal converter, and an optical fiber.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the signal passing control circuit includes a driver element and a photocoupler.

  The invention according to claim 5 is the invention according to claim 2, wherein the operation mode detection circuit is configured such that the operation mode is the fire-fighting operation mode when a fire-fighting operation switch installed in a car is turned on. It is characterized by detecting a certain thing.

  According to a sixth aspect of the present invention, in the second aspect of the present invention, the operation mode detection circuit is configured such that the operation mode is the emergency operation mode when a recall button installed near a landing is pressed. The emergency elevator transmission control system according to claim 1, wherein:

  The invention according to claim 7 is the invention according to claim 2, wherein the operation mode detection circuit detects that the operation mode is the firefighting operation mode when a fire control operation has already been performed. It is characterized by that.

  According to the present invention, in the fire fighting operation mode, the one-way transmission cutoff circuit cuts off the signal from the hall display device side to the elevator main control device side and prevents the abnormal signal from being input to the elevator main control device. Therefore, the communication control circuit can be built in the hall display device. Therefore, it is possible to prevent the installation man-hours and wiring work man-hours of the communication control circuit from increasing, and it is possible to unify the design for the hall display devices of the normal elevator and the emergency elevator.

  FIG. 1 is an explanatory diagram showing a configuration example of an emergency elevator transmission control system according to an embodiment of the present invention. The configuration of FIG. 1 employs a hall display device 10 having a built-in communication control circuit 13 in spite of being an emergency elevator. The elevator control device 3 on the serial transmission path 14 and the hall display device 10 of each floor are connected via a one-way transmission cutoff circuit 15, and this one-way transmission cutoff circuit 15 is installed in the machine room 2. Like to do.

  FIG. 2 is an explanatory diagram showing a detailed configuration of the one-way transmission cutoff circuit 15 in FIG. As shown in this figure, the one-way transmission cutoff circuit 15 has an operation mode detection circuit 16 and a signal passing control circuit 17.

  The operation mode detection circuit 16 has a contact 16a. The operation mode detection circuit 16 inputs a fire-fighting operation mode detection result from the elevator control device 3 as an on command, thereby turning on the contact 16a. Here, the case where the elevator control device 3 detects the fire fighting operation mode basically means that the fire fighting operation switch 9 of the car operation panel 8 in the car 6 is turned on (from “OFF” to “ON”). Is assumed). However, in addition, when the “call-back button” (not shown) installed near the landing is pressed, or when the fire control operation is already performed, the elevator control device 3 sets the fire-fighting operation mode. It can be configured to detect and output an ON command to the contact 16a.

  The signal passing control circuit 17 is composed of signal conversion circuits 18 and 19. The signal conversion circuit 18 includes a transmission driver circuit 20 having driver elements D1 and D2, and an optical signal converter 21, and the signal conversion circuit 19 includes a transmission driver circuit 22 having driver elements D3 and D4, and an optical signal. The signal converter 23 is configured, and the optical signal converters 21 and 23 are connected by an optical fiber 24. The output signals from the operation mode detection circuit 16 are inverted and input to the control gates of the driver elements D2 and D4.

  Next, the operation of the present embodiment configured as described above will be described. The elevator control device 3 has two operation modes, a normal operation mode and an emergency operation mode, and operates the elevator in the normal operation mode in normal times. In the normal operation mode, since the contact 16a is turned off, the output signal of the operation mode detection circuit 16 is an L (low level) signal, and the inverted signal is supplied to the control gates of the driver elements D2 and D4. (High level) signal is input. Accordingly, in this state, the driver elements D2 and D4 permit passage of signals from the communication control circuit 13 side to the elevator control device 3 side.

  Therefore, when the elevator user presses the hall call button 11, the communication control circuit 13 sends out the hall call signal onto the serial transmission path 14. This hall call signal is sent to the elevator controller 3 via the driver elements D4 and D2.

  When the elevator control device 3 receives the hall call button signal, it performs hall call registration and sends a lighting command onto the serial transmission path 14. The elevator control device 3 also constantly sends a display control signal for the current car position of the car 6 on the serial transmission path 14. These lighting commands and display control signals are sent to the communication control circuit 13 of the hall display device 10 via the driver elements D1 and D3.

  Then, the communication control circuit 13 causes the hall call button 11 to perform a lighting operation based on the lighting command, and causes the car position indicator 12 to perform a display operation on the current car position based on the display control signal.

  In this way, a fire broke out during the elevator operation of the elevator control device 3 based on the normal operation mode, and the firefighters of the fire brigade who arrived at the building by fire notification got into the car 6 and dedicated keys. Assume that the fire fighting operation switch 9 is switched from “OFF” to “ON”. The operation signal from the fire fighting operation switch 9 is transmitted to the elevator control device 3 through a transmission path in the tail cord (not shown).

  Thereby, the elevator control device 3 outputs a signal for causing the operation mode detection circuit 16 to detect the fire fighting operation mode, and switches the contact 16a that has been in the OFF state to the ON state. Then, the output signal of the operation mode detection circuit 16 becomes an H signal, and an L signal which is an inverted signal thereof is input to the control gates of the driver elements D4 and D2. Therefore, in this state, the driver elements D4 and D2 block signals from the communication control circuit 13 side to the elevator control device 3 side.

  Therefore, even if the elevator user presses the hall call button 11 and the communication control circuit 13 sends the hall call signal onto the serial transmission line 14, the hall call signal is blocked by the driver elements D4 and D2. The elevator control device 3 is not reached. On the other hand, the display control signal for the current car position that is always sent from the elevator control device 3 onto the serial transmission path 14 is the hall display device via the driver elements D1 and D3, as in the normal operation mode. 10 communication control circuits 13. Therefore, the car position indicator 12 of the hall display device 10 on each floor continuously displays the current car position, which is important information for fire fighting activities.

  Here, let us consider a case where the driver elements D4 and D2 are configured to allow passage of signals from the communication control circuit 13 side to the elevator control device 3 side even in the state of switching to the fire fighting operation mode. In this case, it is assumed that the communication control circuit 13 in the hall display device 10 covers a considerable amount of water due to water discharge from the fire hose of the fire brigade or water from the ceiling sprinkler. The hall call signal may be changed to an abnormal signal when it is output from the communication control circuit 13.

  If such an abnormal signal is sent to the elevator control device 3 via the driver elements D4 and D2, the elevator control device 3 assumes that an abnormality has occurred in the serial transmission path 14, and the serial transmission path 14 All the signal inputs are stopped, and the signal output to the serial transmission path 14 is also stopped. Accordingly, the output of the display control signal for the current car position that has been constantly sent from the elevator control device 3 to the serial transmission path 14 is also stopped. Therefore, the car position indicator 12 of the hall display device 10 on each floor does not display the current car position, which is important information for fire fighting activities.

  However, according to the configuration of the present embodiment, since the one-way transmission cut-off circuit 15 cuts off the signal from the landing display device 10 side to the elevator control device 3 side at the time of switching to the fire fighting operation mode, the elevator The control device 3 does not input an abnormal signal from the serial transmission path 14, and the elevator control device 3 can continuously output the signal on the serial transmission path 14, and the current car position as described above can be obtained. The situation where it is not displayed can be avoided.

  That is, in the present embodiment, similarly to the system of FIG. 4 for a normal elevator, the hall display with the communication control circuit 13A externally attached is adopted, although the hall display device 10 incorporating the communication control circuit 13 is adopted. It can be said that substantially the same function as the conventional system of FIG. 5 employing the apparatus 10A is ensured.

  Therefore, as in the conventional system of FIG. 5, it is possible to prevent the installation man-hour and the wiring work man-hour from increasing due to the communication control circuit. Moreover, since the same hall display device as that of an ordinary elevator can be used for an emergency elevator, it is possible to unify the design of each hall display device and to improve the design design in the hall. be able to.

  Note that the unidirectional transmission cutoff circuit 15A shown in FIG. 3 can be used in addition to the unidirectional transmission cutoff circuit 15 shown in FIG. 2 as the unidirectional transmission cutoff circuit used in the present invention.

  That is, the one-way transmission cutoff circuit 15A includes an operation mode detection circuit 16 and a signal passage control circuit 17A. The signal passing control circuit 17A includes a transmission driver circuit 20 having driver elements D1 and D2, a transmission driver circuit 22 having driver elements D3 and D4, and photocouplers PHC1 and PHC2 that connect the two driver circuits.

  According to the configuration of FIG. 3, since the optical signal converters 21 and 23 and the optical fiber 24 in FIG. 2 are replaced with the photocouplers PHC1 and PHC2, the cost can be further reduced.

Explanatory drawing which shows the structural example of the transmission control system of the emergency elevator which concerns on embodiment of this invention. Explanatory drawing which shows the detailed structure of the one-way transmission cutoff circuit in FIG. Explanatory drawing which shows the modification of the one-way transmission cutoff circuit of FIG. Explanatory drawing which shows the structural example of the transmission control system of a normal elevator. Explanatory drawing which shows the structural example of the transmission control system of the conventional emergency elevator.

Explanation of symbols

1: Hoistway 2: Machine room 3: Elevator control device 4: Hoisting machine 5: Rope 6: Ride car 7: Counterweight 8: Car operation panel 9: Fire fighting operation switch 10, 10A: Landing display device 11: Landing call Button 12: Car position indicator 13, 13A: Communication control circuit 14: Serial transmission path 15, 15A: One-way transmission cutoff circuit 16: Operation mode detection circuit 16a: Contacts 17, 17A: Signal passing control circuits 18, 19: Signal Conversion circuits 20, 22: Transmission driver circuits 21, 23: Optical signal converter 24: Optical fibers D1, D2, D3, D4: Driver elements PHC1, PHC2: Photocouplers

Claims (7)

An elevator main control device having two operation modes of a normal operation mode and a firefighting operation mode;
A communication control circuit connected to the elevator main control device via a serial transmission path is built in, and a hall call button and a car position indicator that perform transmission / reception operations with the elevator main control device via the communication control circuit are provided. A hall display device on each floor;
Provided between the elevator main control device and the hall display device on the serial transmission path, and when the elevator main control device operates the elevator in the fire fighting operation mode, the elevator main control from the hall display device side A one-way transmission cutoff circuit that cuts off only the signal going to the device side;
An emergency elevator transmission control system comprising: The one-way transmission cutoff circuit is
An operation mode detection circuit for detecting whether the operation mode is the normal operation mode or the firefighting operation mode;
When the operation mode detection circuit detects the normal operation mode, a signal traveling from the landing display device side to the elevator main control device side and a signal traveling from the elevator main control device side to the landing display device side When the two-way signal is allowed to pass and the operation mode detection circuit detects the fire-fighting operation mode, the signal directed from the landing display device side to the elevator main control device side is interrupted, And a signal passage control circuit that allows passage of a signal from the elevator main control device side to the hall display device side;
Transmission control system of the emergency elevators according to claim 1, characterized in that it is configured to include. The signal passing control circuit includes a driver element, an optical signal converter, and an optical fiber.
The emergency elevator transmission control system according to claim 2. The signal passing control circuit includes a driver element and a photocoupler.
The emergency elevator transmission control system according to claim 2. The operation mode detection circuit detects that the operation mode is the firefighting operation mode when a firefighting operation switch installed in a car is turned on;
The emergency elevator transmission control system according to claim 2. The operation mode detection circuit detects that the operation mode is the emergency operation mode when a recall button installed near a landing is pressed,
The emergency elevator transmission control system according to claim 2. The operation mode detection circuit detects that the operation mode is the firefighting operation mode when a fire control operation has already been performed.
The emergency elevator transmission control system according to claim 2.

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