JP4910858B2 - Elevator car person detection device and car person detection method - Google Patents

Description

  The present invention relates to an in-car person detecting device and an in-car person detecting method for detecting the presence or absence of a person in a car after an earthquake occurs or when an abnormality is detected.

  In order to prevent service degradation after an earthquake or to reduce the burden on elevator maintenance personnel after an earthquake occurs, current elevators are equipped with diagnostic operation that does not require maintenance work after maintenance operation during an earthquake. There are some that automatically perform normal operation when no abnormality is detected in such diagnostic operation. In such elevators, in general, when the nearest floor stops during an earthquake operation, the car interior lights are turned off to prompt the elevator user to get off the vehicle and to prevent another ride, the door is closed after a predetermined time has elapsed. Operation is performed. In addition, before the diagnostic operation is started, it is confirmed again that the car is unmanned, thereby preventing subsequent confinement.

  On the other hand, even if some abnormality occurs during normal operation of the elevator, an operation for checking the presence or absence of a person in the car is performed. In particular, in an elevator that is remotely monitored, the presence / absence of a person in the car is determined based on various types of elevator information obtained at the monitoring center, and is used as a reference for subsequent actions.

As a conventional technique for detecting a person in a car, for example, a load detecting device detects a load in the car and, based on the detected load, determines whether there is a person in the car and the degree of congestion. (See Patent Document 1).
In addition, as other conventional techniques, there have been proposed ones that detect a person in the car based on an image from a security camera in the elevator car or detect the presence or absence of a person in the car by a human sensor ( For example, see Patent Document 2).
Further, as another prior art, there has been proposed one that detects the presence / absence of a person in a car by a thermal image detecting means incorporating a pyroelectric thin film thermal detection element group (see, for example, Patent Document 3).

JP-A-7-89679 JP 2005-255274 A JP 7-172722 A

  When using a load detection device such as that described in Patent Document 1 to detect the presence or absence of a person in the car, the error is large. For example, when a light weight child is trapped by one person, the person is accurate. There was a possibility that it could not be detected. Moreover, when using a security camera like the thing of patent document 2, the security camera itself, the apparatus which performs image | video analysis, etc. were very expensive, and it was a factor which caused the high cost of the whole elevator. .

  On the other hand, Patent Document 2 discloses that a person in a car is detected by a human sensor, and Patent Document 3 detects a person in a car by a thermal image detection means incorporating a pyroelectric thin film thermal detection element group. It is described that These are inexpensive, but the cheaper the more likely they are to malfunction. When these detection results are used for air conditioning management in a car as described in Patent Document 3, there is no particular problem even if a malfunction occurs. However, for example, when the above detection results are used before the start of diagnostic operation after the occurrence of an earthquake, the possibility of a confinement accident due to a malfunction becomes very high, and a confined user, an elevator maintenance worker, etc. It was supposed to put a big burden on.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator that can accurately detect a person in a car when necessary and can be configured at a very low cost. It is to provide an in-car person detection device and an in-car person detection method.

  An elevator car person detecting device according to the present invention is provided in an elevator car and includes a pyroelectric sensor for detecting the presence or absence of a person in the car, a car operation panel for registering a car call, and an elevator. During normal operation of the car, the pyroelectric sensor operation is determined in relation to the elevator operation based on the presence or absence of a person detected in the car by the pyroelectric sensor, the presence or absence of a car call registered by the car operation panel, and the running state of the car. A pyroelectric sensor operation determination unit; a pyroelectric sensor availability determination unit that determines whether the pyroelectric sensor can be used as a means for detecting a person in the car based on the determination result of the pyroelectric sensor operation determination unit; It is equipped with.

  The elevator car person detecting device according to the present invention includes a pyroelectric sensor provided in the elevator car, a car operation panel provided in the car for registering a car call, and a person in the car by the pyroelectric sensor. Person detection presence / absence determination unit for determining presence / absence of detection, car call presence / absence determination unit for determining presence / absence of a car call registered by the car operation panel, traveling state determination unit for determining the traveling state of the car, and normal elevator A pyroelectric sensor operation determination unit that determines the operation of the pyroelectric sensor in association with the operation of the elevator based on the determination results of the person detection presence determination unit, the car call presence determination unit, and the running state determination unit during driving; A pyroelectric sensor availability determination unit that determines whether or not the pyroelectric sensor can be used as means for detecting a person in the car based on the determination result of the electric sensor operation determination unit; Those were example.

  The elevator car person detection method according to the present invention is based on the presence or absence of a person detected in the car by a pyroelectric sensor during the normal operation of the elevator, the presence or absence of a car call registered by the car operation panel, and the running state of the car. A pyroelectric sensor as means for detecting a person in the car based on a first step of determining the operation of the pyroelectric sensor in association with the operation of the elevator and the operation determination result of the pyroelectric sensor performed during normal operation of the elevator Only when it is determined that the pyroelectric sensor can be used as a means for detecting the person in the car and the second step of determining whether or not the car can be used, detection of the person in the car using the pyroelectric sensor when necessary And a third step of using.

  According to the present invention, the person in the car can be accurately detected when necessary, and can be configured at a very low cost.

  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 diagram for explaining the outline of an elevator car person detecting device according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram showing the elevator car person detecting device according to Embodiment 1 of the present invention. is there.

  1 and 2, 1 is an elevator cab, 2 is a car operation panel provided on a sleeve wall of the cab 1, 3 is a car door for opening and closing the car doorway, and 4 is an elevator in the cab 1 5 and 5 indicate a control panel that controls the entire elevator. When the elevator user 4 enters the car room 1 from the elevator hall, he / she operates the car operation panel 2 to register his / her destination floor (car call). Then, the control panel 5 causes the car to travel based on the car call registered by the car operation panel 2, and transports the user 4 in the car room 1 to the destination floor.

  A pyroelectric sensor 6 is provided in the car room 1 and is provided on the ceiling or the like to detect the presence or absence of a user 4 (person) in the car room 1. Note that the pyroelectric sensor 6 may have any configuration. For example, the pyroelectric sensor 6 outputs a detection signal when a predetermined thermal fluctuation occurs in the detection area.

  The control panel 5 includes a person detection presence / absence determination unit 7, a car call presence / absence determination unit 8, a traveling state determination unit 9, a pyroelectric sensor operation determination unit 10, and a storage unit 11. The person detection presence / absence determination unit 7 is a means for determining whether or not a person in the car has been detected by the pyroelectric sensor 6. For example, when the detection signal is input from the pyroelectric sensor 6, Determine presence of detection.

  The car call presence / absence determination unit 8 is a means for determining whether or not there is a current car call. judge. The traveling state determination unit 9 is means for determining the traveling state of the car. For example, the traveling state of the car is stopped or stopped based on an output value from a pulse encoder provided in an elevator hoist (not shown). Determine if it is inside.

  The pyroelectric sensor operation determination unit 10 is a means for determining whether the pyroelectric sensor 6 is operating normally. For example, when the elevator is in normal operation, the person detection presence determination unit 7, the car Based on the determination results of the call presence / absence determination unit 8 and the traveling state determination unit 9, whether the pyroelectric sensor 6 is normal or abnormal is determined. Then, the determination result of the pyroelectric sensor operation determination unit 10 is stored in the storage unit 11 one by one.

  FIG. 3 is a flowchart showing the operation of the elevator car person detecting device according to the first embodiment of the present invention, and shows the operation of the pyroelectric sensor operation determining unit 10 in detail. The operation will be described below with reference to FIG.

  The pyroelectric sensor operation determination unit 10 always determines whether or not the car has started running in a state where there is a car call by the car operation panel 2 during normal operation of the elevator (S101). When the user 4 who has entered the car room 1 operates the car operation panel 2 to register his / her destination floor and the car starts running after the car door 3 is closed, the car call presence / absence judging unit 8 If there is a call, the traveling state determination unit 9 determines that the car is traveling, and the process proceeds to S102.

  In S <b> 102, the pyroelectric sensor operation determination unit 10 determines whether the user 4 is detected by the pyroelectric sensor 6. Here, when a detection signal is input from the pyroelectric sensor 6 and the person detection presence / absence determination unit 7 determines that a person in the car is detected, the operation of the pyroelectric sensor 6 when a person is in the car room 1 is as follows. It judges that it is normal and progresses to S103. On the other hand, when no detection signal is input from the pyroelectric sensor 6 in S102 and the person detection presence / absence determination unit 7 determines that no person in the car is detected, the user 4 is in the car room 1 (the car operation panel). 2), the pyroelectric sensor 6 determines that the person in the car is not detected (S104), and stores the determination result. After storing in the unit 11, the operation is terminated.

  In S <b> 103, the pyroelectric sensor operation determination unit 10 determines whether the car is stopped in a state where there is no car call by the car operation panel 2. When the car stops at the destination floor and opens / closes the car door 3 and the user 4 gets out of the car (assuming that there is no new user 4), the car call presence / absence determining unit 8 No call is determined, and the traveling state determination unit 9 determines that the car is stopped (and the car door 3 is fully closed), and the process proceeds to S105.

  In S <b> 105, the pyroelectric sensor operation determination unit 10 determines whether the user 4 is detected by the pyroelectric sensor 6. Here, when no detection signal is input from the pyroelectric sensor 6 and the person detection presence / absence determination unit 7 determines that the person in the car is not detected, the operation of the pyroelectric sensor 6 when there is no person in the car room 1. Is determined to be normal (S106), the determination result is stored in the storage unit 11, and the operation is terminated.

  On the other hand, in S105, when the detection signal is continuously input from the pyroelectric sensor 6 for a predetermined time and the presence / absence of the person in the car is determined by the person detection presence / absence determination unit 7, there is no user 4 in the car room 1 (the car) Although the person in the car is detected by the pyroelectric sensor 6 even though there is no call (and the door is closed), the abnormal state of the pyroelectric sensor 6 is determined (S104), and the determination result Is stored in the storage unit 11, and the operation is terminated.

  Note that the operation shown in FIG. 3 is for determining whether the pyroelectric sensor 6 is operating normally in association with various operations of the elevator. For example, during normal operation of the elevator, the operation is performed every predetermined period. To be implemented. The storage unit 11 stores the determination results determined in S104 and S106 (normality and abnormality of the pyroelectric sensor 6) one by one. That is, the storage unit 11 always stores the latest results for a plurality of times determined by the pyroelectric sensor operation determination unit 10.

  The control panel 5 also includes a pyroelectric sensor availability determination unit 12 and an operation control unit 13. Whether the pyroelectric sensor availability determination unit 12 can use the pyroelectric sensor 6 as a means for detecting a person in the car based on the information stored in the storage unit 11, that is, the determination result of the pyroelectric sensor operation determination unit 10. It is a means for determining whether or not. For example, the pyroelectric sensor availability determination unit 12 determines the person in the car when the predetermined plural times determined immediately before by the pyroelectric sensor operation determination unit 10 are all normal (S106 in FIG. 3). The use permission of the pyroelectric sensor 6 as a detecting means is determined.

  It is also possible that the user 4 gets out of the car for some reason after the user 4 gets into the car room 1 and registers the car call from the car operation panel 2. In such a case, even if the pyroelectric sensor 6 operates normally, it is determined that the pyroelectric sensor operation determination unit 10 is abnormal (operation from S102 to S104 in FIG. 3). For this reason, an abnormality (S104 in FIG. 3) is not more than a predetermined number of times among the predetermined multiple results determined immediately before by the pyroelectric sensor operation determination unit 10 as the determination criterion by the pyroelectric sensor availability determination unit 12. The use permission may be determined when the error is less than a predetermined number of times and the latest result is normal.

  On the other hand, the operation control unit 13 is a means for operating the elevator based on various input signals. For example, the operation control unit 13 appropriately controls normal operation, earthquake control operation, diagnosis operation, and the like according to the situation.

  FIG. 4 is a flowchart showing the operation of the elevator car person detecting device according to the first embodiment of the present invention, and shows an operation after the occurrence of an earthquake as an example of the car person detecting method using the pyroelectric sensor 5. It is a thing. The operation will be described below with reference to FIG.

  When the safety device 14 or the like operates due to the occurrence of an earthquake and the elevator stops in the hoistway (S201), the operation control unit 13 first confirms that there are no passengers in the car before starting the automatic diagnosis operation. To do this. Specifically, the operation control unit 13 determines whether or not to detect a person in the car using the pyroelectric sensor 6 based on the determination result of the pyroelectric sensor availability determination unit 12. For example, if the pyroelectric sensor 6 has been operating normally more than a predetermined number of times continuously until the elevator stops (S202), the pyroelectric sensor availability determination unit 12 determines permission to use and proceeds to S203. .

  On the other hand, if it is determined in S202 that the pyroelectric sensor availability determination unit 12 determines that the use is not possible, the detection of the person in the car by the pyroelectric sensor 6 is not used, and the operation is terminated by reporting to the monitoring center 15. (S204). In such a case, the monitoring center 15 that has received the report dispatches a professional engineer to carry out an inspection or the like, and returns the elevator to normal operation.

  In S <b> 203, the operation control unit 13 detects a person in the car that actually uses the pyroelectric sensor 6. Here, when a detection signal is input from the pyroelectric sensor 6 and the presence / absence detection of the person in the car is determined by the person detection presence / absence determination unit 7, the operation control unit 13 performs a diagnostic operation with a person in the car. If this is done, the monitoring center 15 is notified without performing the diagnostic operation because the risk of occurrence of confinement is very high. On the other hand, if the detection signal from the pyroelectric sensor 6 is not input in S203 and the person detection presence / absence determination unit 7 determines that the person in the car is not detected, automatic diagnosis operation is started (S205). Based on this, return to normal operation (S206, S207) and notification to the monitoring center 15 (S206, S204) are performed.

  It should be noted that an announcement or the like for performing person detection may be performed before S203 so that the person in the car can be detected more accurately when necessary.

  According to Embodiment 1 of the present invention, the pyroelectric sensor 6 in the car room 1 can be used as means for detecting a person in the car, and the configuration thereof can be made very inexpensive. For example, the cost can be reduced to about 1/10 compared with the case where the presence or absence of a person in the car is detected from the video of the security camera. Further, the pyroelectric sensor operation determination unit 10 determines the operation of the pyroelectric sensor 6 until immediately before the detection of the person in the car is actually required. When necessary, the pyroelectric sensor is based on the result of the operation determination. Since it is determined whether or not the person in the car using 6 is to be detected, the detection accuracy is greatly improved, for example, no confinement occurs in the diagnostic operation after the earthquake.

It is a figure for demonstrating the outline of the person detection apparatus in the elevator car in Embodiment 1 of this invention. 1 is a configuration diagram illustrating an elevator car person detection device according to Embodiment 1 of the present invention; FIG. It is a flowchart which shows operation | movement of the elevator passenger | carrying person detection apparatus in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the elevator passenger | carrying person detection apparatus in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car room 2 Car operation panel 3 Car door 4 User 5 Control panel 6 Pyroelectric sensor 7 Person detection presence determination part 8 Car call presence determination part 9 Running state determination part 10 Pyroelectric sensor operation determination part 11 Storage part 12 Pyroelectricity Sensor availability determination unit 13 Operation control unit 14 Safety device 15 Monitoring center

Claims (7)

A pyroelectric sensor provided in an elevator car for detecting the presence or absence of a person in the car;
A car operation panel provided in the car for registering a car call;
In the normal operation of the elevator, the pyroelectric sensor is associated with the operation of the elevator based on the presence / absence of person detection in the car by the pyroelectric sensor, the presence / absence of a car call registered by the car operation panel, and the running state of the car. A pyroelectric sensor operation determination unit for determining the operation of
Based on the determination result of the pyroelectric sensor operation determination unit, a pyroelectric sensor availability determination unit that determines whether or not the pyroelectric sensor can be used as means for detecting a person in a car;
An elevator car person detecting device characterized by comprising: A pyroelectric sensor installed in the elevator car;
A car operation panel provided in the car for registering a car call;
A person detection presence / absence determination unit for determining the presence / absence of detection of a person in the car by the pyroelectric sensor;
A car call presence / absence determination unit for determining presence / absence of a car call registered by the car operation panel;
A traveling state determination unit that determines the traveling state of the car;
A pyroelectric sensor that determines the operation of the pyroelectric sensor in association with the operation of the elevator based on the determination results of the person detection presence / absence determination unit, the car call presence / absence determination unit, and the traveling state determination unit during normal operation of the elevator. A sensor operation determination unit;
Based on the determination result of the pyroelectric sensor operation determination unit, a pyroelectric sensor availability determination unit that determines whether or not the pyroelectric sensor can be used as means for detecting a person in a car;
An elevator car person detecting device characterized by comprising: A storage unit for storing the determination result of the pyroelectric sensor operation determination unit;
With
The pyroelectric sensor availability determination unit determines whether or not the pyroelectric sensor can be used as a means for detecting a person in the car based on a plurality of predetermined results determined immediately before by the pyroelectric sensor operation determination unit. The elevator car person detection device according to claim 1 or 2, wherein the person is detected.   The pyroelectric sensor operation determination unit is in a state where there is no detection of a person in the car by the pyroelectric sensor while the car is running with the car call on the car operation panel, and in the state where there is no car call on the car operation panel. 4. The abnormality of the pyroelectric sensor is determined when there is a detection of a person in the car by the pyroelectric sensor while the car is stopped. 5. Elevator car person detection device. During the normal operation of the elevator, whether the person in the car is detected by the pyroelectric sensor, whether there is a car call registered by the car operation panel, and whether or not the pyroelectric sensor is operating in relation to the operation of the car A first step of performing
A second step of determining whether or not the pyroelectric sensor can be used as a means for detecting a person in a car based on the operation determination result of the pyroelectric sensor performed during normal operation of the elevator;
A third step of using detection of an in-car person using the pyroelectric sensor only when it is determined that the pyroelectric sensor can be used as means for detecting an in-car person;
A method for detecting a person in an elevator car, comprising:   The first step is when there is no detection of a person in the car by a pyroelectric sensor while the car is running with a car call on the car operation panel, and when there is no car call on the car operation panel. 6. The elevator car person detection method according to claim 5, wherein when the pyroelectric sensor detects a person in the car while the vehicle is stopped, an abnormality of the pyroelectric sensor is determined.   The second step is a means for detecting the person in the car based on a plurality of predetermined results determined immediately before of the pyroelectric sensor operation determination results performed during normal operation of the elevator. The method for detecting a person in an elevator car according to claim 5 or 6, wherein it is determined whether or not the electric sensor can be used.

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