JPH0776470A - Information display of elevator - Google Patents

Abstract

PURPOSE:To provide accurate time data to a user even in abnormal systems like the occurrence of defective transfer of data by making a display controlling means refer to a timer means to update the time data displayed along with the passage of time when data is not subjected to the normal reception by an abnormal transferring means. CONSTITUTION:A display control CPU 23 refers to a transfer status signal 30 to judge whether or not the transfer is normal. When the transfer is judged to be defective, the display control CPU 23 detects the defective transfer by the transfer status signal 30 outputted by a transfer path I/F 20. The display control CPU 23 refers to count information 32 provided from a timer circuit 31, recognizes the passage of a fixed time, update the time data therein and further use the updated time data in display data 24 to output the data to a display 26. By practicing the above, the time data are not updated as defective transfer takes place and a trouble of time display unsuitable for the actual condition is avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator information display device for providing useful information to elevator passengers.

[0002]

2. Description of the Related Art With the recent increase in the number of buildings and the increase in intelligentness, the needs of customers such as the enhancement of human interface technology for elevators are becoming more and more prominent day by day. Reflecting these requirements, in addition to the basic information such as the conventional elevator stop floor and movement direction, it also displays the current time, displays weather and temperature, displays various messages such as event information, and displays the information during special operation. A high-performance system that develops general information for the public such as notification of reasons on the display in the elevator hall or the basket and provides it to users begins to appear in the latest building,
It is believed that it will become more and more generally accepted in the future.

This system is generally called an information system,
The above-mentioned HI unit such as a display is called an information display device, and a system configuration example of this information system will be described with reference to FIG. 7.

The in-car information display 4 and the hall information display 5 in the figure are connected to the information control device 2 which is the center of the system through the information display serial transmission line 6, and useful display information is displayed. Is being offered. Useful information is, for example:

(1) Basic information ... Display of current time, weather, temperature, etc. (2) Message information ... Event information-Messages such as "Good morning" are displayed by time zone and priority items.

(3) Control operation information: Information display for the purpose of calling attention to operation such as floor guidance, occurrence of earthquake / fire, shift to dedicated operation such as VIP, etc. The information control device 2 is generally installed in the elevator machine room, is connected to the elevator control device 1, and constantly conducts an investigation of the operation contents, and the control operation is performed based on the contents of the control operation data 3 which is the provided content. Information (3) is being transmitted.

The message information (2) is communicated to the information controller 2 by the information input terminal 8 connected via the external interface (external IF) transmission path 11. When the administrator inputs the provided information to the information input terminal 8, the information is downloaded and the necessary information is expanded to the in-car information display 4 and the hall information display 5 in the order of high priority during the required time zone. It is a translation.

(1) Regarding the basic information, the time is updated by the clock and calendar IC existing in the information control device 2.
However, correction input can be made also in the information input terminal 8 described above, and a problem such as advance / delay of display data over time can be easily corrected. The display of weather, temperature, etc. is input from an externally provided sensor, etc., but these can also be easily realized by connecting in the form of a terminal via the external I / F transmission path 11. is there.

The above is the basic configuration, and the information input terminal 8 described above is a device that is generally installed in a manager's room or the like due to its character. Further, the following I is connected to the external I / F transmission line 11.
By connecting / F equipment, the convenience of this system is dramatically improved.

Telephone line I / F 9 ... Information propagation using a general telephone line (information provision from a long distance) Building LAN I / F 10 ... Information input terminal 8 described above
Function can be input from various terminals connected to the LAN in the building.

The elevator information system functions by combining these configurations. The information display device 2 installed in the basket and in the hall achieves its function with the configuration shown in FIG. In the figure, 20 is a transmission line I / F for connecting to the information display transmission line 6 to retrieve information, 21 is a buffer for storing information data detected by the transmission line I / F 20, 2
Reference numeral 3 is a CPU for controlling the display function, and 26 is a display.

The information data transmitted through the information display serial transmission line 6 is detected by the transmission line I / F 20.
It is reproduced and written in the information storage buffer 21 as the information signal 22.

The information control CPU 23 searches the information storage buffer 21 in a timely manner according to the flow chart shown in FIG. 6 (S30), and control data, time data, messages, etc. stored in different areas in the information storage buffer 21. Various data are sequentially taken out as the information signal 27 (S3
2 to S37), the data is converted into the display data 24 and provided to the display 26 together with the display control signal 25 for controlling the display method (screen batch display, scroll display, etc.). Display 2
6 converts the above-mentioned provided data into visual information such as light to provide information to the user. With the above, the information display device of the elevator is functioning.

The display 26 used for an elevator is generally a three-color LED in a hall, an EL in a basket, a liquid crystal display (including color), etc. Display tubes and the like have also been used and are becoming established as more standard functions.

[0015]

As described above, the elevator information system includes the in-car information display 4 and the hall information display 5 via the information display transmission path 6 from the information control device 2 installed in the elevator machine room. Information is downloaded to. The total length of the information display serial transmission line 6 may reach several hundreds of meters, and naturally it is necessary to consider the case of transmission failure due to transmission line abnormality (short circuit or the like). In the information display device 2, when a transmission failure occurs, the transmission line I / F 20 detects information data.
Since the reproduction cannot be performed, the information signal 22 indicating the update operation of the information storage buffer 21 is not output. Therefore, if the transmission failure is continuing, the data in the information storage buffer 21 always holds the contents just before the transmission failure occurred.

By the way, the display control CPU 23 executes the flowchart shown in FIG. 6 regardless of the state of the transmission path. While the transmission failure continues, the display data on the display unit 26 is in a non-updated state, and in particular, regarding the time display, the same hours and minutes are displayed for many minutes or hours.
It will give the user discomfort. Display control CPU2
A control method in which a transmission state detection signal detected by the transmission line I / F 20 (corresponding to 30 of the present invention in FIG. 1) is input to 3 and the display function is interrupted during continuous transmission failure is also possible, but is always provided. The fact that the displayed information is not displayed makes the user more uncomfortable and anxious, which is not appropriate.

The present invention can supply accurate time to the display in the car and the hall even when the system is abnormal such as the occurrence of transmission failure, so that no false alarm is displayed and the system abnormality is detected. It is an object of the present invention to provide an information display device for an elevator that is perceived by the user and does not cause misgivings.

[0018]

The present invention has been invented to solve the above problems, and an invention corresponding to claim 1 is a serial transmission means for propagating time data, control operation data and the like, A transmission line interface unit for connecting a terminal to this transmission unit, an information storage buffer for storing the information captured by this transmission line interface unit transmission line, and an elevator user who searches the data in this information storage buffer at appropriate times. In contrast to the display control means for converting into useful information, the display means for actually expanding the conversion data by the display control means on the screen, and the time data display, for detecting the display duration at the same time. And a transmission status signal detected by the transmission path interface means and provided to the display control means. Information about an elevator characterized in that, when data cannot be normally received due to an abnormality in the transmission means, the display control means searches the timer means and updates time data to be displayed as time passes. It is a display device.

[0019]

According to the invention corresponding to claim 1, with respect to the time data display, the transmission status signal detected by the timer means for detecting the display duration at the same time and the transmission means and provided to the display control means is added. However, when normal reception of data is not possible due to an abnormality in the transmission means, the display control means searches the timer means and adds the function to update the time data to be displayed with the passage of time. It is possible to provide accurate time data to the user both during and during the period.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of an elevator information display device according to the present invention. In the figure, an information display serial transmission line 6, a transmission line I / F 20, an information storage buffer 2
1, the information signals 22 and 27, the display control signal 25, and the display 26 are the same as those in the prior art.
23 and the display data 24 have the same configuration, but their operation flow and data contents are improved.

In this embodiment, a transmission line I / F is added to the conventional device.
The state of the information display serial transmission line 6 detected by 20 is used as a transmission status signal 30 for the display control CPU 23.
And the timer circuit 31 is added as a target of control / search by the display control CPU 23.

Regarding the time data search / display processing, the display control CPU 23 executes the flow chart shown in FIG. Display control CPU 2 as transmission status signal 30
3 performs a search (S1), and in S2, it is determined whether the transmission is normal. When it is determined that the transmission is normal, the display control CPU2
3 is the time data in the information storage buffer 21 as it is,
A search is performed (S3), and it is determined whether or not the data has been changed (S4). If the data is not changed, the data is converted into the display data 24 and output to the display 26 (S6). When it is determined in S4 that the time data has been updated (counted up), the reset signal 33 of the newly established timer circuit 31 is output (S5). In this case, the timer circuit 31 restarts counting from zero again.

When it is determined in S2 that a transmission failure has occurred, the display control CPU 23 detects this from the transmission status signal 30 output from the transmission path I / F 20, and shifts to the transmission failure mode (S7 to S11). In this mode, the display control CPU 23 searches the count information 32 provided by the timer circuit 31 (S7), recognizes the elapse of a certain time, internally updates the time data, and displays the updated time data. It is used for the data 24 and output to the display 26. That is, if a transmission failure occurs at 11:20 and continues, for example, the time data in the information storage buffer 21 remains 11:20, but the timer circuit 31
When 60 seconds are detected, the CPU judges the display data to be corrected to 11:21 (S10, S11, S).
9).

By executing the above, the conventional problem that the time data is not updated and the basic information (time) does not match the actual situation due to the occurrence of the transmission failure is avoided.

However, the above-mentioned contents are merely provisional measures associated with the occurrence of a transmission failure, and if this continues without a natural recovery, the person concerned such as the building manager should be encouraged to take immediate action. Notification of is essential. Occurrence of transmission failure: The time display during continuation depends on the timer circuit 31 inside each information display device (terminal), and since each information display device is an independent display, it is long due to individual differences of the timer circuit 31. When the time transmission is defective, the display time of each information display device may deviate, which is not preferable. Above all, it is not possible to display new messages and control information, so it is necessary to return to maintenance immediately.

The occurrence of the transmission failure should have been detected also in the information control device 2, and the information control device 2 uses the external I / F serial transmission line 11 to enter the information input device in the management room. 8 (or a display device such as a CRT monitoring panel) or a method of notifying the elevator maintenance company using the telephone line I / F 9 is possible, but the display 26 itself also makes the user feel uncomfortable. The transmission failure should be reported within the range that does not give. FIG. 3 shows an example of the change in the creation of the display data 24 so that the: symbol between the hours and the minutes of the time display data is flickered when the transmission is abnormal. This display is effective not only for early notification of the occurrence of a transmission error, but also for helping to find the transmission line error location during maintenance. The elevator has an important meaning as a common place for providing information in the building, but the time display at the time of going to work is particularly important.
The effect of improving the reliability of passengers and elevators is excellent due to the countermeasure against abnormal transmission according to the present invention.

By the way, the display control CPU shown in FIG.
The operation flowchart of 23 is configured to promptly restart and display the time data in the information storage buffer 21 when the normal transmission is restored due to the restoration of the serial transmission line 6 or the like.

The transmission path I / F 20 detects a transmission abnormality because normal data provided by the information control device 2 is deformed or disappeared in the transmission path due to the above-mentioned short circuit of the information display serial transmission path 6 or the like. In addition to the above case, there may be a case where there is an abnormality in the provided data itself or a case where no data is provided due to an abnormality of the information control device 2 itself (due to internal CPU runaway or the like).

The time data is normally transmitted during the information control device 2.
Although it has been described in the related art that the clock provided inside and the calendar IC are provided, when the cause of the transmission error is the latter, the time data restarted after the normal transmission is recovered is different from the normal time data. There is a case. That is, the time data itself supplied from the information control device 2 after the normal return of the transmission may be incorrect due to the above clock count error due to an internal CPU error in the information control device 2 or the data destruction of the calendar IC. obtain.

At this time, the display control devices 4 and 5 in the car and the hall display an abnormal time after the normal transmission is restored. The flowchart shown in FIG. 4 is an improvement of this point, that is, after the transmission is normally restored (S12, S13, S
14), the display control CPU 23 displays the information storage buffer 21
Is accessed (S15), and the acquisition of the information signal 27 is restarted. At this time, the conventional timer circuit 31 is searched (S1
9) Compare the time data in the information storage buffer 21 with the time data displayed on the display device 26 after self-correction in the display control CPU 23 (S20), and the time difference between the two is within a certain range. If it is inside, the information storage buffer 21
Expand the time data in the display 26 (S16-S
18). Further, when it is determined in S20 that the time is out of the range, it is determined that the reliability of the time data supplied from the information control device 2 is questionable, and the timer circuit 31 is searched as in the conventional case (S21). The time data corrected by the display control CPU 23 is continuously output to the display unit 26 in the form of a transmission abnormality (S21 to S).
25).

Even when the transmission is normal as described above, even when the time data supplied from the information transmission serial transmission line 6 cannot be expanded on the display 26 and the correction data is displayed, It is effective to display an abnormality on the display 26. By displaying the flicker of the symbol in the case of transmission failure shown in FIG. 3 and distinguishing it from the time of transmission abnormality by changing the cycle etc., it is possible to notify the concerned person to the failure without being noticed by general users, It can contribute to the early complete restoration of the system.

Further, the elevator has an important meaning as a common place for providing information in the building, but the time display at the time of going to work or the like is particularly important. The effect of improving the reliability of passengers and elevators is excellent due to the countermeasure against abnormal transmission according to the present invention.

The timer circuit 31 of the above-described embodiment may use a time interrupt process using crystal oscillation of a general CPU, a timer circuit by an external circuit, or a calendar IC. These applications are the processes of FIG. The configuration is almost the same as.

[0034]

According to the present invention, it is possible to supply accurate time to the display in the basket and the hall even if the system is abnormal such as the occurrence of transmission failure, and the false alarm is not displayed. It becomes possible to provide an information display device for an elevator that does not make a user feel uneasy when a system abnormality is detected by a user.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an elevator information display device according to the present invention.

FIG. 2 is a flowchart relating to time display in a display control CPU in an elevator information display device according to the present invention.

FIG. 3 is a diagram showing an example of displaying time data on an elevator display according to claims 2 and 4 of the present invention.

FIG. 4 is an operation flowchart regarding time display in the display control CPU according to claim 3 of the present invention.

FIG. 5 is a functional block diagram of an information display device for an elevator in the related art.

FIG. 6 is an operation flowchart in the display control CPU according to the related art.

FIG. 7 is a conceptual diagram of a conventional information system.

[Explanation of symbols]

6 ... Serial transmission line for information display, 20 ... Transmission line interface, 22 ... Information signal, 23 ... Display control CPU, 2
4 ... Display data, 25 ... Display control signal, 26 ... Display device,
27 ... Information signal, 30 ... Transmission status signal, 31 ... Timer circuit, 32 ... Count information, 33 ... Timer reset, 34 ... Crystal oscillator.

Claims (5)

[Claims] 1. A serial transmission means for propagating time data, control operation data, etc., a transmission path interface means for connecting a terminal to this transmission means, and a transmission path interface section for storing information taken in by the transmission path. Information storage buffer, display control means for timely retrieving the data in the information storage buffer and converting it into useful information for elevator users, and the converted data by this display control means are actually developed on the screen. The display means, the timer means for detecting the display duration of the same time with respect to the time data display, and the transmission status signal detected by the transmission path interface means and provided to the display control means, If normal reception of data is not possible due to an error in the An information display device for an elevator, wherein a step is searched and time data displayed as time passes is updated. 2. The time data displayed by the display control means by searching the timer means when the data can be normally received due to the restoration of the serial transmission line, and the normal time data in the information storage buffer. The information display device for an elevator according to claim 1, further comprising means for performing a comparison with the above, and when the two are significantly different, a means for searching the timer means and continuing displaying the displayed time data is added. . 3. The information display device for an elevator according to claim 1, wherein the display method of the display data is changed to indicate that the reception of the data is disturbed. 4. The elevator information display device according to claim 1, wherein the timer means uses a time obtained by dividing a crystal oscillation circuit that drives the display control means itself. Display device. 5. The elevator information display according to claim 1, wherein the timer means uses the time of the timer means driven by an oscillator independent of the display control means. apparatus.