JPH058477B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a moving object monitoring device that tracks an object that has entered a predetermined area and outputs a tracking signal to monitor the object.

[Conventional technology]

Crimes occurring in buildings have recently increased and have become a social problem. For example, crimes have occurred where elevator cars in residential buildings take advantage of the fact that they are closed rooms and assault passengers (particularly women) inside the cars. In addition, buildings other than residential buildings, such as department stores, stores, office buildings, etc., have common areas such as hallways and halls that can be freely used by employees and an unspecified number of people other than employees. If there is a dedicated area adjacent to which people are prohibited from entering, there is a risk that crimes such as theft may occur.

Furthermore, buildings with entrances and exits facing the road outside the building are environments where outsiders can easily break into the building, and crimes such as theft are common.

Therefore, as a measure to prevent the above-mentioned crime, the present applicant proposed a monitoring control device (Japanese Patent Application No. 102088/1988).

Such monitoring and control equipment uses tracking means to track the actions of each person in designated areas such as elevator halls and hallways, which are common areas where crimes are likely to occur, and also analyzes the characteristics of these people's actions. When the determining means determines that the characteristic satisfies a predetermined condition (conditions for a person with suspicious behavior), a crime prevention device (alarm device, warning device) is activated; This system automatically detects suspicious behavior at an early stage, issues warnings and precautions, and prevents crimes.

Another monitoring and control device proposed by the present applicant (Japanese Patent Application No. 102090/1982) tracks the actions of passengers in the elevator hall, and detects when these passengers do not take the expected action when using the elevator. For example, it is possible to detect when an elevator car has arrived but not to get into it, and when this happens a large number of times, the passenger is regarded as a suspicious person and a crime prevention device (alarm device) is activated.

Such a monitoring and control device will be explained based on FIGS. 9 to 13. FIG. 9 shows a side cross section of a five-story building and will be schematically described.

In the figure, 1, 2, 3, 4, and 5 indicate elevator halls provided on each floor of the building.

Reference numeral 6 denotes an elevator car, and the car 6 is moved up and down by a drive device 7 to connect the elevator halls 1,
It is designed to stop facing 2, 3, 4, and 5.

The drive device 7 is adapted to operate based on a command from an elevator control device 8. That is,
As will be described later, the elevator control device 8 controls the operations of the destination buttons of passengers in the car 6 and the elevator hall 1.
In addition to executing controls such as starting, running, and stopping the car 6, opening/closing the door, and registering a call based on the passenger's operation of the hall button 5, as will be described later, the control signal A from the crime prevention control means 9 is executed. The car 6 is controlled based on the above. The crime prevention control means 9 outputs the control signal A when it receives the crime prevention command signal E from the monitoring control device 10, and also outputs the control signal A from the speaker 11 provided in the elevator hall 2 and the speaker 12 provided in the manager's room. It is starting to work. Although the speaker 11 is provided only in the elevator hall 2 on the second floor in the drawing, originally,
It is provided in all elevator halls 1, 2, 3, 4, and 5.

The monitoring control device 10 is connected to a television camera 13 installed to photograph the situation in the elevator hall 2 on the second floor, and analyzes the captured images to monitor the movement of the passengers M in the elevator hall 2. A tracking means 14 for tracking, and a situation in which the passenger M being tracked does not take the planned action when using the elevator is detected based on the tracking state by the tracking means 14 and the elevator state by the elevator control device 8. It consists of an analysis means 15 for counting the number of occurrences, and a determination means 16 for outputting a crime prevention command signal E to operate the crime prevention control means 9 when it is detected that the number of occurrences exceeds a specified value.

Thus, the supervisory control device 10 allows the passenger M
It can be determined whether a person is a suspicious person or not.

When the crime prevention control means 9 receives the crime prevention command signal E from the supervisory control device 10, it outputs the control signal A to the elevator control device 8, thereby preventing the car 6 from stopping at a specific floor. . Thereby, for example, if a passenger M in the elevator hall 2 is a suspicious person, the passenger M will not be able to get into the car 6, and a crime will be prevented.

FIG. 10 is a system configuration diagram of the supervisory control device 10 and the elevator control device 8. As shown in FIG.

In the figure, the tracking means 14 is the television camera 1.
3 is analyzed at short intervals (for example, 30 times per second), the movement of passenger M in elevator hall 2 on the second floor is automatically tracked, and information representing the tracking status (position X, Y coordinates, area, status etc.) are output as tracking signals 201 to 208 for each channel. In this conventional example, the tracking means 14 is provided with eight channels, each corresponding to windows W ₁ to W ₈ (described later).
Therefore, up to eight passengers can be tracked separately.

Here, a control signal 209 is given to the tracking means 14 from a control means 20, which will be described later, and this control signal 209 controls the screen display of the monitor television 17, erasing of the window Wi (i=1 to 8), and optionally It is possible to control the setting of coordinates, the start and end of tracking, and the output of information regarding any window (position data, area and status of the dark spot in the window).

The monitor television 17 is installed in the manager's room,
The image captured by the television camera 13 and the tracking situation are displayed.

An example of the image on the monitor television 17 is shown in FIG. In the figure, 18 is an elevator hall button, 19 is a hall door, and the X-axis and Y-axis are adjusted in advance so that their origin 0 is at the center of the elevator hall 2. S1 to S8 are measurement start points representing initial positions when tracking is started. In addition, in this conventional example, the darkest point of the image taken by the television camera 13 (corresponding to the human head) is detected, and its center of gravity is defined as the position Pi (i=1 to 8), and an appropriate size is placed around it. A window Wi (i=1 to 8) of a size (for example, a size that does not overlap with other passengers considering the size when passenger M is viewed from above through the television camera 13) is set. By setting this window (i=1 to 8), even if there are many other scotomas (other people), the tracking means 14 is not affected by other scotomas, and the tracking means 14 movement can be tracked.

On the other hand, the control means 20, as shown in FIG.
It constitutes the analysis means 15 and the determination means 16. The control means 20 consists of a microcomputer as shown in FIG.
2. RAM23, input circuit 20A and output circuit 2
It consists of 0B. The output circuit 20B outputs the crime prevention command signal E, and the crime prevention command signal E includes signals Ea, Eb, and Ec. Here, the crime prevention command signal Ea is input to the warning means 24. The crime prevention command signal Ea becomes "H" when issuing a warning to the passengers M in the elevator hall 2, and this fact is broadcast through the speaker 11. The warning means 24 is installed in the manager's room. Further, the crime prevention command signal Eb is inputted to the warning means 24. The crime prevention command signal Eb
becomes "H" when instructing the manager to issue an alarm, and a message to that effect is broadcast through the speaker 12. Furthermore, the crime prevention command signal Ec is input to the elevator control device 8. The crime prevention command signal Ec becomes "H" when instructing the car 6 not to stop at a specific floor, that is, an elevator hall where a suspicious person is present.

Further, as shown in FIG. 10, the elevator control device 8 is equipped with a well-known car call system that inputs a destination button signal from an operation panel 26 provided in the car 6 to register the car call for the floor desired by the passenger. Registration circuit 27
Then, the up button signal and the down button signal from the landing buttons provided in elevator halls 1 to 5 on each floor (in the 10th illustrated example, only the landing button 18 on the 2nd floor is shown) are input to generate a landing call for calling car 6. A well-known hall call registration circuit 28 for registering, an operation control circuit 29 for controlling starting, running, stopping of the car 6, door opening/closing, etc. in response to the registered car calls and hall calls, and the crime prevention command. It is comprised of a well-known stop prevention circuit 30 that outputs a signal to invalidate the registration of car calls and hall calls on the second floor when the signal Ec is input at "H".

Next, the operation of the elevator supervisory control device will be explained according to the flowcharts shown in FIGS. 12 and 13. The operations according to this flowchart are executed by an arithmetic program stored in the ROM 22 of the control means 20.

In the calculation program shown in FIG. 12, initial settings are performed in step 700 when the power is turned on. In this initial configuration step 700, the RAM
23 to a predetermined value such as "O", or set the data in each window to the tracking means 14.
The control signal 209 is used for initial settings such as setting Wi to predetermined coordinates corresponding to the measurement starting point Si, setting the output mode of the tracking signals 201 to 208, and initializing the screen of the monitor television 17.
Output. Warning means 2 which is also a security control device
4. Each crime prevention command signal Ea, Eb, and Ec is set to "L" and outputted to the alarm means 25 and the stop prevention circuit 30. After this initial setting step 700 is completed, steps 701 to 717 are repeated periodically (every 0.1 seconds in this conventional example).

First, in step 701, the tracking signals 201 to 208 are input from the tracking means 14 through the input circuit 20A shown in FIG.
1 to 8), position coordinate data xi, yi, area data (representing the area of the dark spot within the window Wi) Zi, and status data (tracking data Qi, etc.)
Set in RAM23. In addition, an elevator status signal is input from the elevator control device 8, and car position floor data CP (CP = 1st to 5th floors) and operation direction data DR (DR = 1 for up direction, DR = 1 for down direction) are input.
DR = 2, DR = 0 when there is no direction), door switch data DS (DS = 0 when the door is open, DS = 1 when the door is closed), elevator status data such as hall call data and car call data. Set in RAM23.

Subsequently, in step 702, variable data i (set in the RAM 15) corresponding to each window Wi is initialized to "1". After that, steps 703 to 717 are performed for all windows W1 to W8.
will be repeated.

In step 703, it is determined whether or not passengers within the window Wi are being automatically tracked. If automatic tracking is not in progress, the tracking data Qi is "0", so the process advances to step 704. Here, the tracking data Qi is
Each tracking means 14 outputs. In step 704, it is determined whether a passenger is detected within the window Wi. If there is a passenger within the window Wi, the area data Zi will be at least larger than a constant value RO (preset in the ROM 22), so the process proceeds to step 705, where automatic tracking is started for the window Wi. A control signal 209 is outputted via the output circuit 20B. Then, in step 709, the uplink service counter NUi and the downlink service counter NDi by car 6 after the start of tracking are counted and their total value Ni
Calculate.

The number counters NUi, NDi, and Ni are all RAM
It is set within 23. This step 709 will be explained in detail in accordance with steps 720-730 in FIG. Steps 720 to 724 in the diagram
Steps 725 to 729 indicate processing for counting the uplink service counter NUi, and steps 725 to 729 indicate processing for counting the downlink service counter NDi. Step 721 determines whether or not the flag FUi indicating whether or not car 6 has served the second floor in the upward direction is set and reset, so that car 6 arrives at the second floor (CP=2) in the upward direction (DR=1). However, if the door is open (DS=0), the flag FUi is set to "1" in step 722, and if not, the flag FUi is reset to "0" in step 724. Therefore, in step 720, the car 6 is
After arriving at the floor in the upward direction and opening the door, flag FUi is displayed.
= "1", so immediately after car 6 closes its door to answer a call on another floor or wait as an empty car, that is, the door switch data DS
When the value changes from “0” to “1”, step 72
Proceed to step 3 and check the upstream service counter here.
NUi is counted up by "1" and flag FUi is reset to "0" at step 724. The downlink service counter NDi is also incremented in the same manner.

In this way, by counting the number of services for each service direction, that is, the number of times a passenger on the second floor would have been able to board car 6, NUi and NDi, in step 730, the number of services Ni is increased and the number of services is calculated.
It is set as the sum of NUi and the number of downlink services NDi, and the process of counting the number of services in step 709 is completed.

If there is no passenger within the window Wi in step 704, the area data Zi is "0", so the process advances to step 716, where the next window
In order to process Wi+1, the variable data i is counted up by "1".

When tracking of the passenger within the window Wi is started, the tracking data Qi becomes "1" in step 703, so the process proceeds to step 706, where it is determined whether or not to end the automatic tracking. When the tracked passenger leaves elevator hall 2 by boarding car 6 or leaving elevator hall 2, the position coordinates become xi<-XH or xi>XH, or
Since yi<-YH or yi>YH, step 70
In step 7, initialize the number counters NUi, NDi, and Ni to "0" and set the window Wi as the measurement starting point.
Si and outputs a control signal 209 via the output circuit 20B to erase a message (described later) displayed on the screen of the monitor television 17 and a blinking display in a window (described later).

While the passenger being tracked is in the elevator hall 2, the service counters NUi and NDi are calculated in step 709 as described above.

In steps 710 to 715, the degree of suspicious behavior of the passenger being chased is determined in stages according to the number of services Ni, and crime prevention operations are performed accordingly. The specified values M1, M2, M3 are stored in the ROM22 in advance.
In this embodiment, they are set to 5 times, 10 times, and 15 times, respectively.

Therefore, when the value of the number of times Ni is smaller than the specified value M1, the process proceeds to step 710→716, and no crime prevention operation is performed. However, when the value of the number of services Ni is M1≦Ni<M2, the process proceeds to steps 710→711→712→716.
In step 711, the crime prevention command signal Ea is set to "H" and outputted via the output circuit 20B. Therefore, the warning means 24 issues a soft warning through the speaker 11 provided on the ceiling of the elevator hall 2, for example, by announcing the message "Press the hall button and wait." This information broadcast is a crime prevention command signal.
This is repeated periodically (eg, every 10 seconds) until Ea is reset to "L". At the same time, in step 711, the monitor TV 1 installed in the manager's room
A control signal 209 is outputted via the output circuit 20B so that a message indicating that a warning has been issued (for example, "Warning in progress") is displayed on the screen of No. 7. If the passenger being tracked follows the above warning and gets into car 6 or leaves the elevator hall or 2, step 70
6→707→708, and here the crime prevention command signal Ea is reset to "L".

Next, when the value of service count Ni becomes M2≦Ni<M3, step 710 → 711 → 712 → 71
3714→716, and in step 713, the crime prevention command signal Eb is set to "H" via the output circuit 20B.
and output it. As a result, the alarm means 25 broadcasts "There is a person behaving suspiciously in the elevator hall on the second floor" through the speaker 12 provided in the manager's room, and issues an alarm to the manager. At the same time, in step 713, the control signal 209 is sent out via the output circuit 20B so that the portion corresponding to the window Wi on the screen of the monitor television 17 is displayed blinking.
This blinking display allows the manager to confirm the position of the person in the elevator hall 2 who is behaving suspiciously.

This warning to the manager is repeated periodically (for example, every 5 seconds) until the tracked passenger disappears from the elevator hall 2 and the crime prevention command signal Eb is reset to "L" in step 708. Similarly, the blinking display of the window on the screen of monitor television 17 continues until it is reset in step 707.

Finally, when the value of the number of services Ni becomes Ni≧M3, step 710 → 711 → 712 → 713
→ Proceed to 714 → 715 → 716, and step 7
15, the crime prevention command signal Ec is sent via the output circuit 20B.
is set to "H" and output. As a result, the stop prevention circuit 30 in the elevator control device 8 prohibits the registration of second floor up calls, down calls, and car calls, and prevents the car 6 from stopping at the second floor.

In this way, the processing in steps 703 to 716 is performed for all windows W1 to W8, and when the conversion i becomes greater than 8 in step 717, the processing in this calculation cycle is terminated.

In this way, in the conventional example, the behavior of each passenger M in the elevator hall is tracked by the tracking means 14 using imaging by the television camera 13,
Based on the tracking status and elevator status, the number of times the car 6 arrives but does not board, that is, the number of times the car is serviced during the tracking period is counted, and if the number of services exceeds a fixed value, the passenger being tracked is It is determined that the person is behaving suspiciously and is ambushing the victim or waiting for an opportunity to commit a crime, and issues a warning to the person behaving in a suspicious manner or alerting the administrator, thereby making it possible to prevent crimes before they occur. can. Furthermore, since the manager does not need to constantly monitor the TV monitor, the burden on the manager can be reduced. Furthermore, since the elevator car is prevented from stopping on a floor where there is a person behaving suspiciously, it is possible to prevent crimes in which the car 6 is misused. Furthermore, since the crime prevention control device is operated in stages according to the number of times of service, it is possible to perform appropriate crime prevention according to the accuracy of determining the suspicious behavior of the person.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned moving object monitoring device, a predetermined area (for example, an elevator hall)
In order to capture a moving object that enters the window, a tracking start area (area of a constant size centered on measurement start points S1 to S8) is set up near the boundary of the predetermined area and divided into a plurality of areas. W1～
Fixedly assigned to W8. For this reason,
The following problems occurred.

That is, assume that the apparatus is in a standby state and one moving object enters the predetermined area through an arbitrary window initially set in the tracking start area. Then, the window assigned to the tracking start area enters the tracking state. Suppose that another moving object then enters the predetermined area along the same route. In this case, as described above, since the window is tracking the previous moving object, there is a problem in that the tracking means 14 cannot capture the latter moving object.

Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a moving object monitoring device that does not fail to capture a moving object that has entered a predetermined area.

[Means for solving problems]

The present invention is provided with a correction means for reconfiguring and newly allocating the entire tracking start area to a tracking means (window) that is not in a tracking state among the tracking means (windows).

[Effect]

The correction means reconfigures and reassigns the entire tracking start area to the tracking means that is not in the tracking state. Therefore, even if a moving object subsequently enters the predetermined area through the same tracking start area, the latter moving object can be captured by the newly assigned tracking means.

〔Example〕

An embodiment in which the present invention is applied to elevator monitoring and control will be described below with reference to FIGS. 1 to 8. Note that the same components as those in the prior art are given the same reference numerals, and the description thereof will be omitted.

However, in FIG. 1, 41 is a detection means, and the detection means 41 is designed to detect the number of tracking means 14 that are not in a tracking state, that is, in a standby state, among a plurality of tracking means 14 (windows). It's getting old.

Further, 48 indicates a correction means. The correction means 48
In this example, the entire tracking start area is reconfigured and allocated to the tracking means 14 that is not in the tracking state, that is, the tracking means 14 that is in the standby state.

Next, the effect will be explained.

FIG. 2 is a flowchart corresponding to FIG. 12 of the conventional example, and is the same as the conventional example except that steps 740 and 760 are added.
A description of the operations from 717 to 717 will be omitted. As will be described later, the size of the tracking start area changes depending on the number of waiting tracking means 14 (windows), but in step 705, when tracking starts, the size of the window is changed to the same size as in the conventional example. The control signal 209 is used to command the moving object to be tracked with this size from now on.

Steps 740 and 760 are executed periodically (=every 0.1 seconds). This will be explained using detailed flowcharts in FIGS. 3 and 4.

Note that FIG. 3 corresponds to the action of the detection means 41,
FIG. 4 corresponds to the action of the correction means 48. first,
This will be explained based on FIG.

First, in step 741, the window
A standby number counter WNA (stored in the RAM 23) representing the number of tracking means 14 in a standby state among the tracking means 14 corresponding to W1 to W4 is initialized to "0", and each window W1 to W4 is Initialize the window number i corresponding to W4 to "1". From now on, for windows W1 to W4, proceed to step 74.
Repeat steps 2 to 745.

In step 742, the CPU 21 determines whether the tracking means 14 corresponding to each window Wi is in the tracking state or in the standby state. If it is in the tracking state (tracking data Qi = "1"), the process proceeds to step 744 without doing anything, and the window number i is counted up by "1". On the other hand, if it is in the standby state (tracking data Qi = "0"), step 7
Step 43 increments the waiting number counter WNA by "1", and step 744 is reached. In step 745, it is determined whether all processing for windows W1 to W4 has been completed. When the value of window number i is between 2 and 4, the process returns to step 742, but when the window number i reaches 5, the process returns to step 7.
Proceed to 46.

In steps 746-750, window W5
.about.W8, the same processing as in steps 741 to 745 is performed to find the number of tracking means 14 in a standby state.

In this way, in steps 741-750, the groups of windows W1-W4 and the windows
In each group of W5 to W8, the number of tracking means 14 in a standby state is counted.

Next, the operation of resetting the tracking start area for the tracking means 14 in a standby state will be explained based on FIG. 4. First, to explain the outline of the operation, the correction means 48 is operated by the tracking means 14 in a standby state.
For (window), all tracking start areas are reconfigured and reassigned. Therefore, for example, when the number of tracking means 14 in the standby state is two, each tracking means 14 has an area consisting of four tracking start areas that can be converted into two tracking start areas. It will be assigned to configure and reconfigure.

In FIG. 4, steps 761-772 perform processing for windows W1-W4, and step 773, which is constructed in the same manner as steps 761-772, performs processing for windows W5-W8.

First, in step 761, each window W1
~ Set window number i corresponding to W4 to "1",
Variable data (hereinafter referred to as start area number) j corresponding to the tracking start area is initialized to "1". From then on, repeat step 7 until window number i reaches 5.
Repeat steps 62-772.

In step 762, if the window
If the tracking means 14 corresponding to
1 and increments the window number i by 1. If the tracking means 14 corresponding to the window Wi is on standby, step 762
→Proceed to step 763 and determine the standby number counter WNA. If the tracking means 14 corresponding to all windows W1 to W4 are on standby, the value of the waiting number counter WNA is 4, so step 763→
Proceed to 764 → 765 → 766. Here, when the standby number counter WNA=4, that is, there are four tracking means 14 in the standby state, as shown in FIG.
Window the two tracking start areas WA41 to WA44
The windows are assigned in order from W1 to W4, and a control signal is outputted via the output circuit 53 to set the window Wi in the assigned tracking start area WA4j.
In step 770, the start area number j is counted up by "1". When the number of waiting tracking means 14 is three (the value of the waiting number counter WNA is 3), the process proceeds to steps 763→764→765→767, where three tracking start areas are set as shown in FIG. WA31 to WA33 are assigned to the waiting tracking means 14 in descending order of window number, and if the number of waiting windows is 2 (the value of the waiting number counter WNA is 2), Proceed to steps 763 → 764 → 768,
Here, as shown in Figure 7, there are two tracking start areas.
WA21 and WA22 are assigned to the waiting tracking means 14. Furthermore, if the number of waiting windows is one (waiting number counter WNA = 1), as shown in FIG. It will be assigned to the tracking means 14.

In this way, in steps 761-772,
As the number of waiting tracking means 14 corresponding to windows W1 to W4 decreases, one of the tracking means 14 decreases.
Correction is made to widen the tracking start area for each individual.

Correction of the tracking start area for windows W5 to W8 is similarly performed at step 773.

In the above-mentioned embodiment, the number of waiting tracking means 14 is detected in the device for tracking the behavior of passengers in the elevator hall, and the smaller the number of waiting tracking means 14, the smaller the tracking start area per tracking means 14. Since each of these is corrected to be wider, it is less likely that a passenger passing through the entrance/exit of the elevator hall 2 will be missed.

In the above embodiment, a tracking means that uses the image captured by a television camera as an input signal is used to track the movement of an object, but the tracking means is not limited to this. For example, the movement of an object may be tracked based on input signals from an infrared camera or an ultrasonic transducer. Further, although a dark spot is detected and tracked in the above embodiment, a bright spot or a specific color or shape may be detected and tracked.

Further, this moving object monitoring device can be applied to various other places besides elevator halls.

〔Effect of the invention〕

As explained above, according to the present invention, correction means is provided to review and reassign the division of the tracer start for capturing an intruder into a predetermined area to the tracking means that is not in the tracking state. Even if moving objects continuously enter the predetermined area along the same route, it is possible to capture subsequent moving objects and provide a moving object monitoring device with high tracking accuracy.

[Brief explanation of the drawing]

Figures 1 to 8 relate to the present invention, Figure 1 is a configuration diagram, Figures 2 to 4 are flowcharts, and Figures 5 to 8 are views of the elevator hall from above to explain the operation. The explanatory diagrams, FIGS. 9 to 13, relate to the prior art, FIG. 9 is a configuration diagram, FIG. 10 is a system configuration diagram, FIG. 11 is an explanatory diagram of the elevator hall viewed from above, and FIG. FIG. 13 is a flowchart. 14... Tracking means, 15... Analysis means, 16...
...determination means, 41...detection means, 42...correction means.

Claims (1)

[Claims] 1. The detection range is a certain monitoring area where the moving object enters and exits, and always waits in a pre-assigned area among the tracking start areas formed near the entrance and exit of the monitoring area, and the moving object waits until the tracking starts. A plurality of tracking means that detect the moving object when it enters the area, track its position, and output it as tracking information; and an analysis that analyzes the behavior of the moving object based on the output of the tracking means. and determining means for determining whether the behavior is normal or abnormal based on the analysis result by the analyzing means and outputting a corresponding signal when the behavior is abnormal, wherein the tracking means is in a tracking state. A moving object monitoring device characterized by comprising: a correction means for changing the allocated area when the tracking start area is reached so that the remaining tracking means on standby share the entire area of the tracking start area.