JP2008105763A - Control method and device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely confirm the presence or absence of passengers in a car before staring an automatic recovering operation to be executed after an earthquake. <P>SOLUTION: Sound generated in the car 1 is collected by a microphone 4 provided in the car 1 before the automatic recovering operation to be executed after the earthquake. A reference value corresponding to sound when there are no passengers in the car 1 is decided based on the sound collected by the microphone 4 before the automatic recovering operation. By comparing the sound collected by the microphone 4 with the decided reference value, the presence or absence of passengers in the car 1 is decided. When it is decided that there are no passengers in the car 1, the automatic recovering operation after the earthquake is started. The reference value is decided based on the sound collected by the microphone 4 in a prescribed period before starting the automatic recovering operation when the sound is in a prescribed level over the prescribed period, for instance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator control method and control device having a function of performing an automatic recovery operation after an earthquake occurs.

  Elevators equipped with a function to perform automatic recovery operation after an earthquake has occurred. After performing an emergency control operation such as a stop on the nearest floor, diagnostic operation is started under specified conditions, and abnormalities in the elevator are detected during such diagnostic operation. If not, it automatically returns to normal operation. On the other hand, if any abnormality is detected in the diagnostic operation, the car is stopped on the spot (abnormality detection place) in order to prevent the damage from spreading, and the elevator is in a dormant state until manual recovery by a specialist engineer is performed. . Therefore, when the diagnosis operation is performed in a state where the passenger is in the car, when an abnormality is detected, the passenger may be trapped in the car and not rescued for a long time.

  In order to prevent the confinement accident, it is necessary to confirm that no passenger is in the car after the control operation at the time of the earthquake and before the automatic recovery operation is started. Therefore, in the past, it was confirmed that there were no passengers in the car before the start of automatic recovery operation using a weighing device that measures the load capacity of the car and a camera in the car that captures the state of the car. . Note that this is not a technology for confirming that no passengers are in the car before the start of automatic recovery operation after the earthquake, but it occurs when the car is raised and lowered as a conventional technique in diagnostic operation during automatic recovery operation. There has been proposed one that detects an abnormality of an elevator from a sound to be heard (for example, see Patent Document 1).

JP 2005-132563 A

  When checking the presence or absence of passengers in a car using a scale device or a car camera, there is a risk of false detection, particularly after an earthquake. That is, the scale device is generally installed mainly for the purpose of detecting the fullness of passengers and alleviating the start-up shock due to the difference in weight balance between the car and the counterweight. For this reason, even if a slight error occurs in the output value of the scale device, the occurrence of the error is not noticed in normal operation. Therefore, if it is not confirmed that there is no error in the output value by periodic inspection or the like, there is a possibility that the person in the car cannot be accurately detected after the earthquake. In addition, even if the output value of the scale device shows a larger value than the state without the load in the car before the start of the automatic recovery operation, does it indicate that a person is in the car? There is also a structural problem that it is impossible to distinguish whether the main rope or the like is caught in the hoistway.

  On the other hand, there is a risk that the shooting direction of the in-car camera may change due to the impact of an earthquake. In such a case, the situation in the car cannot be accurately photographed by the in-car camera, and passengers are left in the car, particularly when the presence or absence of passengers in the car is determined by automatic image determination. Nevertheless, there was a fear that there were no passengers in the car.

  In addition, the thing of patent document 1 makes the structure completely different from this invention which confirms the presence or absence of the passenger in a cage | basket | car before the earthquake automatic recovery driving | operation start.

  The present invention has been made to solve the above-described problems, and the purpose of the present invention is to reliably confirm the presence or absence of passengers in a car before the start of an automatic recovery operation performed after an earthquake. It is providing the control method and control apparatus of an elevator.

  The elevator control method according to the present invention includes a step of collecting sounds generated in a car by a microphone provided in the car before the automatic restoration operation performed after the earthquake, and a microphone collecting before the automatic restoration operation. The step of determining a reference value corresponding to the sound when there is no passenger in the car based on the sound that has been sounded is compared with the sound collected by the microphone and the determined reference value. A step of determining the presence or absence of a passenger, and a step of starting an automatic recovery operation after an earthquake when it is determined by the determination of the presence or absence of a passenger that there are no passengers in the car.

  An elevator control apparatus according to the present invention is provided in an elevator car and collects sound generated in the car, and sound collected by the microphone before an automatic recovery operation performed after an earthquake. The reference value determination unit for determining the reference value corresponding to the sound when there is no passenger in the car, the sound collected by the microphone, and the reference value determined by the reference value determination unit are compared, A passenger presence / absence determination unit that determines the presence or absence of passengers in the car, and an automatic recovery operation control unit that starts an automatic recovery operation after an earthquake when the passenger presence / absence determination unit determines that there are no passengers in the car. It is provided.

  According to this invention, the presence or absence of passengers in the car can be reliably confirmed before the start of the automatic recovery operation performed after the earthquake.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing an elevator control apparatus according to Embodiment 1 of the present invention, and FIGS. 2 and 3 are flowcharts showing the operation of the elevator control apparatus according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes a car that moves up and down in the hoistway, and 2 denotes an interphone provided in the car 1. And a microphone 4 for collecting the sound.

  5 is a control device that controls the overall control of the elevator. In addition to normal operation including raising / lowering control of the car 1, control in the event of an emergency operation such as stopping the nearest floor after the occurrence of an earthquake, Passenger presence check operation to confirm the presence or absence of passengers, after the passenger presence check operation, diagnostic operation is carried out under predetermined conditions, and automatic recovery operation to return to normal operation when no abnormality is found in this diagnostic operation, etc. Control each operation of the elevator. 6 is an earthquake detector provided in a building equipped with an elevator, and outputs earthquake occurrence information to the control device 5 when it senses shaking of the building, and 7 is a remote monitoring device connected to the control device 5. , 8 is a maintenance company that monitors the elevator by connecting to the remote monitoring device 7 via the public network 9 or the like. A passenger in the car 1 can talk to a supervisor of the maintenance company 8 by using the speaker 3 and the microphone 4 of the interphone 2.

  The control device 5 includes a voice input unit 10, a reference value determination unit 11, a reference value storage unit 12, a passenger presence / absence determination unit 13, an announcement device 14, a control circuit 15, and the like. Here, the voice input unit 10 is connected to the microphone 4 in the car 1 and the sound collected by the microphone 4 is input as a voice signal. Further, the reference value determination unit 11 is based on the audio signal input to the audio input unit 10, that is, the sound collected by the microphone 4 before the start of the automatic recovery operation performed after the earthquake. A reference value corresponding to a sound when there is no passenger is determined. For example, the reference value determination unit 11 performs the automatic restoration operation after the sound of the sound collected by the microphone 4 after the nearest floor stop, door opening operation, expulsion announcement, and door closing operation are sequentially performed by the control operation during an earthquake. When it is within a predetermined level for a predetermined period (for example, several tens of seconds) before the start, the reference value is determined based on the sound collected by the microphone 4 during the predetermined period. Specifically, a value obtained by adding a predetermined value to the average value of the sound levels collected by the microphone 4 during the predetermined period is set as the reference value. The reference value determination unit 11 collects the sound collected by the microphone 4 several times before the automatic recovery operation is started, and all the collected sounds are within a predetermined level. In addition, the reference value may be determined based on all the collected sounds.

  The reference value storage unit 12 stores the reference value determined by the reference value determination unit 11. The passenger presence / absence determination unit 13 compares the sound collected by the microphone 4 with the reference value stored by the reference value storage unit 12 to determine the presence / absence of a passenger in the car 1. For example, the passenger presence / absence determination unit 13 is left in the car 1 when a sound having a level higher than the reference value is collected by the microphone 4 within a predetermined period set after storing the reference value. It is determined that there is a passenger in the car 1 as being generated by the passenger. Further, if no sound having a level higher than the reference value is collected by the microphone 4 within the predetermined period set after storing the reference value, it is determined that there is no passenger in the car 1.

  The announcement device 14 is connected to the speaker 3, and makes an announcement that a sound is generated in the car 1 when the passenger presence / absence determination unit 13 determines the presence / absence of a passenger in the car 1. Moreover, the said control circuit 15 is a means for implementing appropriate operation | movement based on the various information from the passenger presence determination part 13 grade | etc., For example, determines with the passenger presence determination part 13 that there is no passenger in the cage | basket | car 1. When this is done, the automatic recovery operation control unit 16 that starts the automatic recovery operation after the earthquake, the door opening / closing control unit 17 that controls the opening / closing operation of the car door (and the landing door), and the scale for measuring the load on the car 1 A scale detection unit 19 that detects an output value of the device 18 and a reporting unit 20 that reports the occurrence of abnormality to the outside of the elevator are provided.

  Next, based on FIG.2 and FIG.3, operation | movement of the control apparatus of the elevator which has the said structure is demonstrated. When an earthquake of a predetermined scale occurs and the earthquake detector 6 operates (step S101), the control device 5 performs an earthquake control operation based on the earthquake occurrence information from the earthquake detector 6. Specifically, first, after the car 1 is stopped at the nearest floor (step S102), a door opening operation is performed in order to rescue the passengers in the car 1 (step S103). If the nearest floor cannot be stopped for some reason, or if the nearest floor is stopped but the door cannot be opened, the passengers in the car 1 cannot be rescued. The pause state is continued until manual recovery by (Steps S104 and S105).

  In addition, the control device 5 makes an announcement from the speaker 3 to drive the passengers in the car 1 out of the car 1 after stopping at the nearest floor and performing the door opening operation, and furthermore, the elevator cannot be used. In order to inform the passengers in the car 1 of this, the illumination in the car 1 is turned off (step S106). In addition, the said operation | movement is a measure made in order to prevent that a passenger is confined in the cage | basket | car 1 when abnormality is detected by the automatic recovery driving | operation implemented after an earthquake. Then, after a predetermined time has elapsed since the announcement and the lighting was turned off, a door closing operation is performed in order to prevent entry into the car 1 (step S107).

  The control operation at the time of earthquake ends when the door closing is completed, and the control device 5 starts a passenger presence confirmation operation for shifting from the control operation at the time of earthquake to the automatic recovery operation. If for some reason the door closing operation cannot be completed in step S107, it is not possible to shift to the automatic recovery operation with the door open. The pause state is continued (steps S104 and S105).

  In the passenger presence / absence confirmation operation, first, the sound generated in the car 1 is collected by the microphone 4, and the reference value is measured based on the collected sound (step S108). Specifically, after the door closing operation of the car 1 is completed, the sound generated in the car 1 is continuously collected by the microphone 4, and the reference value determination unit 11 is based on the audio signal input to the audio input unit 10. Thus, it is determined whether or not the sound collected by the microphone 4 is within a predetermined level for a predetermined period before the automatic recovery operation is started (step S109). When the sound collected by the microphone 4 is within a predetermined level for a predetermined period before the start of the automatic recovery operation, the reference value is set based on the sound collected by the microphone 4 within the predetermined period. judge. For example, a value obtained by adding a predetermined value to the average value of the sound levels collected by the microphone 4 during the predetermined period is determined as the reference value and stored in the reference value storage unit 12 (step S110). When a sound having a level higher than the predetermined level is collected by the microphone 4 within the predetermined period, the measurement of the reference value is repeated until the sound of the same level can be measured for the predetermined period. (Steps S108 and S109).

  When the reference value is stored in the reference value storage unit 12, the control device 5 next performs an operation for determining the presence or absence of a passenger in the car 1. Specifically, first, an announcement is made from the speaker 3 to notify the car 1 that sound (including voice) is to be generated (step S111). For example, an announcement is given to the car 1 saying "Who is there? Please make a voice or sound for 5 seconds if you have any." And after sounding the announcement for determination of the presence or absence of a passenger, the passenger presence determination unit 13 compares the sound collected by the microphone 4 with the reference value stored in the reference value storage unit 12, The presence or absence of passengers in the car 1 is determined. In the determination of the presence / absence of passengers, for example, the passenger presence / absence determination unit 13, when a sound having a level higher than the reference value is collected by the microphone 4 within a predetermined period set after storing the reference value, Assuming that the sound is a response by a passenger left in the car 1, it is determined that there is a passenger in the car 1 (step S112).

  In step S112, when it is determined by the passenger presence / absence determination unit 13 that there is no passenger in the car 1, the control device 5 ends the passenger presence / absence confirmation operation and the automatic recovery operation control unit 16 starts the automatic recovery operation. Then, when no abnormality is found in the automatic recovery operation, the normal operation is restored (step S113).

  On the other hand, in step S112, when a response sound equal to or higher than the reference value is detected and the passenger presence / absence determination unit 13 determines that there are passengers in the car 1, the passengers left in the car 1 are moved out of the car 1. After the door opening / closing operation is performed to drive out (steps S114 and S115), the reference value is re-determined based on the sound collected by the microphone 4 after the above-described driving operation is completed (step S116). Specifically, after the door is closed, the reference value determination unit 11 determines again whether or not the sound collected by the microphone 4 is at a predetermined level over a predetermined period (step S117). The obtained reference value is stored in the reference value storage unit 12 (step S118).

  When the re-determined reference value is stored in the reference value storage unit 12, the control device 5 next performs an operation for re-determining whether or not there is a passenger in the car 1. Specifically, first, an announcement is made from the speaker 3 to notify the inside of the car 1 that sound (including voice) is generated (step S119). Then, after sounding the announcement for redetermining the presence / absence of passengers, the passenger presence / absence determination unit 13 collects the sound collected by the microphone 4 and the re-determined reference value stored in the reference value storage unit 12. And the presence or absence of passengers in the car 1 is re-determined. In the redetermination of the presence / absence of the passenger, for example, a sound having a level higher than the redetermined reference value is collected by the microphone 4 within a predetermined period set after storing the redetermined reference value. In this case, it is determined again that there is a passenger in the car 1 assuming that the sound is a response by the passenger left in the car 1 (step S120).

  In step S120, when it is determined again by the passenger presence / absence determination unit 13 that there is no passenger in the car 1, the control device 5 ends the passenger presence / absence confirmation operation as if the passenger has escaped from the car 1, and automatically recovers. The operation control unit 16 starts the automatic recovery operation. Then, when no abnormality is found in the automatic recovery operation, the normal operation is restored (step S121).

  On the other hand, when a response sound equal to or higher than the re-determined reference value is detected in step S120 and the passenger presence / absence determination unit 13 re-determines that there is a passenger in the car 1, the passenger is injured for reasons such as injury. Since it is also assumed that the vehicle cannot go outside 1, it is assumed that an emergency has occurred (step S122), and the occurrence of the emergency is notified to the surroundings and outside of the elevator. Specifically, the occurrence of an emergency is notified to the vicinity of the elevator by performing a door opening operation and ringing a buzzer while the door is fully open (step S123). When a passenger in the car 1 escapes out of the car 1 by himself or a person around the landing 9 rescues a passenger in the car 1, the weight in the car 1 (for example, A decrease of 20 kg assuming a child is detected (step S124). In such a case, a door closing operation is performed to prevent other passengers from entering the car 1 (step S125).

  On the other hand, the occurrence of an emergency is notified from the reporting unit 20 to the maintenance company 8 outside the elevator (step S126). The maintenance company 8 that has received the notification performs an emergency response such as dispatching a professional engineer to the elevator (step S127). Then, the elevator is manually restored by a specialist engineer dispatched from the maintenance company 8 (step S128).

  According to the first embodiment of the present invention, the presence or absence of passengers in the car 1 can be reliably confirmed before the start of the automatic recovery operation performed after the earthquake, and any abnormality is detected in the automatic recovery operation. Even in this case, it is possible to reliably prevent a confinement accident. In addition, since the reference value of sound when determining the presence or absence of passengers is determined before the start of automatic recovery operation, it is possible to prevent false detection even when, for example, ambient noise differs between day and night. It is possible to improve the determination accuracy of the presence or absence of passengers.

  In the first embodiment of the present invention, when determining whether or not there is a passenger and re-determination, the announcement from the speaker 3 is informed that the sound is generated. It is not limited to three. For example, the same effect can be obtained by displaying characters on the liquid crystal screen in the car 1 to generate sound.

It is a block block diagram which shows the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

1 car, 2 intercom, 3 speaker, 4 microphone, 5 control device,
6 Seismic detector, 7 Remote monitoring device, 8 Maintenance company, 9 Public line network,
10 voice input unit, 11 reference value determination unit, 12 reference value storage unit,
13 Passenger presence / absence determination unit, 14 Announcement device, 15 Control circuit,
16 automatic recovery operation control unit, 17 door opening / closing control unit, 18 weighing device,
19 Weighing detection section, 20 Reporting section

Claims (8)

Collecting sound generated in the car by a microphone provided in the car before the automatic restoration operation performed after the earthquake;
Determining a reference value corresponding to the sound when no passenger is in the car, based on the sound collected by the microphone before the automatic recovery operation;
Comparing the sound collected by the microphone and the determined reference value to determine the presence or absence of passengers in the car;
When it is determined that there is no passenger in the car by determining the presence or absence of the passenger, a step of starting automatic recovery operation after the earthquake;
An elevator control method comprising: If it is determined by the presence or absence of passengers that there are passengers in the car, the door is opened and the passengers are expelled from the car;
Re-determining a reference value corresponding to the sound when there is no passenger in the car, based on the sound collected by the microphone after the expelling operation is completed;
Comparing the sound collected by the microphone and the re-determined reference value to re-determine the presence or absence of passengers in the car;
The elevator control method according to claim 1, further comprising: When it is determined that there are passengers in the car by re-determination of the presence or absence of passengers, opening the door and notifying the outside of the elevator,
The elevator control method according to claim 2, further comprising: A step of notifying the car that a sound is generated when determining whether there is a passenger and re-determination; and
The elevator control method according to claim 1 or 2, further comprising:   The reference value corresponding to the sound when there is no passenger in the car is within the predetermined period when the sound collected by the microphone is within a predetermined level for a predetermined period before the start of the automatic recovery operation. The method for controlling an elevator according to claim 1, wherein the determination is made based on sound collected by the microphone. A microphone provided in an elevator car for collecting sounds generated in the car;
A reference value determination unit for determining a reference value corresponding to a sound when there is no passenger in the car based on the sound collected by the microphone before the automatic restoration operation performed after the earthquake;
Passenger presence / absence determination unit that compares the sound collected by the microphone and the reference value determined by the reference value determination unit to determine the presence or absence of passengers in the car;
When it is determined by the passenger presence / absence determination unit that there are no passengers in the car, an automatic recovery operation control unit that starts an automatic recovery operation after an earthquake,
An elevator control device comprising: Provided in an elevator car, and an informing means for informing information in the car,
The elevator control device according to claim 6, wherein the notification unit notifies the car that a sound is generated when determining whether or not there is a passenger.   The reference value determination unit is based on the sound collected by the microphone within the predetermined period when the sound collected by the microphone is within a predetermined level for a predetermined period before the start of the automatic recovery operation. The elevator control device according to claim 6 or 7, wherein a reference value corresponding to a sound when there is no passenger in the car is determined.

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