JPH02295866A - Elevator position detecting device - Google Patents

Abstract

PURPOSE:To high accurately detect a position while realizing general purpose usability by respectively providing contactless transmitting means in a detector to be detected and a detector while giving a study function to the detector to be detected. CONSTITUTION:Plane antennas 21, 31, 51 (contactless transmitting means), for transmitting position data of respective detectors 20, 30 to be detected, are provided in the detectors 20, 30 provided in a lift path and a detector 50 provided in an elevator cage 4, while a memory means for writing the position data, is contained in the detectors 20, 30 to be detected. The detector 50, being based on a command from an elevator control device 10, writes the position data in the memory means in the detectors 20, 30 through the antenna 51 while reads the position data, stored in the memory means, to be transmitted to the elevator control device 10. Thus by giving a study function to the detectors 20, 30 to realize general purpose usability and reducing restriction of a set up position of the detectors 20, 30, to be detected and the detector 50, a high accurate and inexpensive elevator detecting device can be obtained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an elevator position detection device that detects the absolute position of an elevator car with respect to a hoistway, and in particular provides a learning function to a device to be detected on the hoistway side to provide versatility. This invention relates to an elevator position detection device that achieves this.

[Prior Art] Generally, an elevator apparatus is provided with an elevator control device that can control an elevator car and detect the position of the elevator car. However, even if the position detection function of the elevator control device goes down in the event of an emergency such as a disaster, it is necessary to reliably detect the position of the elevator car and operate the elevator car safely.

For this reason, in the past, in addition to providing a detector in the elevator car, a plurality of devices to be detected were provided at each required value of the hoistway (especially at the terminal end, etc.), and the absolute position of the elevator car was detected separately from the elevator control device. are doing.

FIG. 6 is a side view showing a schematic configuration of a conventional elevator position detection device disclosed in, for example, Japanese Patent Application Laid-Open No. 62-280174, and FIG. 7 is an enlarged perspective view of the main part of FIG. 6.

In the figure, near the upper and lower ends of the hoistway (1), there are plates (2) and (3) that serve as detected devices.
is installed. Each plate (2) and (3) has a step-like notch, and the first operating points (2a) and (3a), the second operating points (2b) and (
3b), third operating points 2c) and (3c), and fourth operating points (2d) and (3d). Each operating point also defines a plurality of detection zones, as described below.

On the other hand, the detector installed in the elevator car (4) (5)
has a tuning fork shape as shown in FIG. 7, and includes light projectors (6a) to (6d) and light receivers (7a) to (7d) corresponding to a plurality of operating point positions of each plate.

Next, the operation of the conventional elevator position detection device shown in FIGS. 6 and 7 will be explained.

When the elevator car (4) is on an intermediate floor, there is nothing blocking the detector (5), as shown in FIG. ad)
respond to

Now, as the elevator car (4) rises and approaches the lower end floor, the detector (5) detects the first actuation point of the plate (2) (
2a), the light from the light projector (6a) is blocked and only the light receiver (7a) becomes inoperable. This inoperation signal is transmitted to an elevator control (not shown) connected to the detector (5), which determines when the elevator car (4) has reached the upper first operating point (2a). detect this and reduce the rate of rise, for example. Further, the elevator cage 4) continues to rise, and the receivers (7b) to (7d)
When the elevator car (4) becomes inoperable one after another, the elevator control device detects the position of the elevator car (4) moment by moment, and finally the elevator car (4) is stopped.

Conversely, when the elevator car (4) descends and approaches the lower terminal floor, the absolute position of the elevator car (4) is similarly detected by the action of the plate (3) and the detector (5).

[Problems to be Solved by the Invention] As described above, the conventional elevator position detection device installs the plates (2) and (3) of a specific shape at a predetermined position, and sandwiches them between the detectors (5). Since it is designed for detection, it requires a plurality of photodetecting elements, and the mounting of the detected device and the detector is limited in space and position, and requires strict positioning accuracy. In addition, it is difficult to change the detection zone, and there is no versatility, so there is a problem that it is expensive.

This invention was made to solve the above problems, and by providing a learning function to the detected device,
The purpose of this invention is to obtain an elevator position detection device that is highly accurate and inexpensive while realizing versatility.

Means for Solving the Problems] An elevator position detection device according to the present invention provides a non-contact transmission means for transmitting position data of the detected device to the detected device and the detector, respectively, and includes a memory means for writing position data, and the detector writes the position data to the memory means in the detected device via the non-contact transmission means based on a command from the elevator control device, and The position data stored in the elevator is read out and transmitted to the elevator control device.

[Function] In this invention, the detector provided in the elevator car writes position data corresponding to the detection zone of each detected device into the memory means when writing position data, and during normal operation, the detector provided in the elevator car writes the writing position data corresponding to the detection zone of each detected device into the memory means. The position data stored in the memory means within is read out and transmitted to the elevator control device.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram showing an outline of an embodiment of the present invention.
1) and (4) are the same as described above.

In the figure, the detectors (20) and (30) installed near the upper and lower end floors of the hoistway (1) and the detector (50) installed on the elevator car (4) are transmitters and receivers, respectively. It is configured.

The detected devices (20) and (30) are a plurality of detected devices (20a) to (20c) and (30a) corresponding to each operating point.
~(30c), and planar antennas (21a)~(21c) and (31a) as non-contact transmission means, respectively.
~(31e) are individually provided. Similarly, the detector (5
0) is equipped with a planar antenna (51) facing each of the planar antennas (21) and (31).

In this case, a planar antenna (21
) and (31) are formed so as to correspond to the ascending and descending speed of the elevator car (4), so that the end portions become shorter. The detector (50) also has a control signal line (11).
An elevator control device (lO) is connected via.

The detector (50) and the detected device (20) and <30) are
For example, it is composed of mutually non-contact ID cards.

The detector (50) is supplied with power from the elevator control device (10), and the detected devices (20) and (30> are connected to the hoistway (1).
Power is supplied from a power supply line (9) that is passed through.

FIG. 2 is a block diagram showing the configuration of the detected devices (20) and (30) and the detector (50) in FIG. 1. Here, the detector (50) and a typical detected device ( 20a).

In the figure, the planar antenna (21a) of the detected device consists of a transmitting antenna (22) and a receiving antenna (23),
The detected device (20a) includes a CPU (24) and a CP
Storage unit (including ROM and RAM belonging to U (24)
25) and a modulation section (22) connected to the transmitting antenna (22).
26) and a demodulator (
27), a trigger circuit (28), memory means, that is, a non-volatile memory (29), and a CPU bus B.

In addition, the planar antenna (51) of the detector is connected to the transmitting antenna (5
2) and a receiving antenna (53), and a detector (50
) includes a CPU (54), a storage unit (55) including ROM and RAM belonging to the CPU (54), a modulation unit (56) connected to a transmitting antenna (52), and a receiving antenna <53 ), a transmission interface (58) connected to the elevator control device (10) via a control signal line (11), and a CPU bus B.
It is composed of.

The control signal line (11) transmits a command C (for example,
rewriting command, etc.) and writing position data DW, and the detector (5
It consists of three signal lines corresponding to the position data D transmitted from 0) to the elevator control device (10).

FIG. 3 is an explanatory diagram showing the transmission signal format when writing position data, from the detector (50) to the detected device (20a
) is the trigger data DT, write command CW, write position data DW, and transmission command CT.
It consists of

FIG. 4 is a flowchart showing the operating procedure in the detector (50), and FIG. 5 is a flowchart showing the operating procedure in the detected devices (20) and (30). It is stored in the ROM in (25) and (55) in advance as a control program.

Next, while referring to Figures 3 to 5,
The operation of the embodiment of the present invention shown in the figure will be explained.

First, the operating procedure of the detector (50) shown in FIG. 4 will be described. When the power is turned on, the initial setting (state St) sets a timer (not shown) that determines the program execution cycle, clears the RAM in the storage unit (55) to 0, etc., and then The following processing steps 82-S
8 is repeated.

That is, it is determined whether or not the rewrite command C is input from the elevator control bag 2 (10) (step S2), and if it is determined that the rewrite command C is present, the write command CW shown in FIG. 3 is set. (Step S3), performs input processing of the writing position data DW from the elevator control device (10) (Step S4), imports the writing position data DW, and inputs the writing position data DW. When (step S4) is completed, the signal in the format shown in FIG. 3 is modulated and amplified by the modulation section (56), and
) to the detected device (step S6)
.

On the other hand, if it is determined in step S2 that the rewrite command C has not been input, the write command CW is reset to 1.
After ~ (step S5), transmission processing to the detected device (step S6) is executed.

Next, the position data D transmitted from the detected device is received via the receiving antenna (53) (step S7),
After being decoded by the demodulator (57) and stored in the RAM, it is sent to the elevator control device (1) via the transmission interface (58).
0), step S8) and return to step S2.

The elevator control bag 2 (10) determines the absolute position π of the elevator car (4) as described above based on the position data D read from the detected device.

By the way, in the elevator control device (10), the positions and writing position data corresponding to the detected devices (20) and (30) are set in advance, and when writing the position data, the elevator control device (10) outputs the rewriting command C and the write position data DW each time the elevator car (4) reaches the position of the detected device while operating the elevator car (4).

These rewrite command C and write position data DW are taken into the detector (50) via the transmission interface (58). When the detector (50) determines that the rewrite command C is input in step S2, the detector (50) stores the write position data DW input together with the rewrite command C in the RAM in the storage unit (55), and stores this data for later transmission. Used when generating signals.

On the other hand, during normal operation, the rewrite command C and the write position data DW are not input, so the only transmission signals to the detected device are the trigger data DT and the transmission command CT (see FIG. 3).

Next, the operating procedure of the detected devices (20) and (30) shown in FIG. 5 will be described. When the power is turned on, initial settings similar to those described above (step 511) are executed, and the following processing steps S12 to S17 are repeated.

For example, during the rewriting operation, the planar antenna (51) of the detector (50) and the planar antenna (21a) of the detected device (20a) are
) are facing each other, and at this time the detector (50) does not transmit a signal in the format shown in FIG.

This transmission signal is transmitted to the receiving antenna (20a) of the detected device (20a).
23) and input to the demodulator (27) and the trigger circuit (28>. First, the trigger circuit (28)
It is determined whether trigger data DT for synchronizing communication is present (step 512), and step S12 is repeated until trigger data DT is detected.

When the trigger data DT is detected, the demodulation section (27) decodes the command and data in the transmission signal and stores it in the storage section (27).
25) and executes data reception processing (step 513). This reception processing step S13 is repeated until the transmission command CT is received in the subsequent step S14.

Then, when the transmission command CT indicating the end of the transmission data is received (step 514), it is determined whether or not there is a write command CW based on the RAM data in the storage section (25). If there is a write command CW, the received write position data DW is written into the nonvolatile memory (29) (step 516).

As a result, the write position data DW generated by the elevator control device (10) is transferred to the corresponding predetermined detected device (
20a) is set as position data D.

Thereafter, the same writing process is repeated, and position data D corresponding to the installation position is written to all detected devices (20) and (30) on the hoistway (1).

On the other hand, if it is determined in step S15 that there is no write command CW, the position data D currently stored in the nonvolatile memory (29) is signal-modulated in the modulation section (26), and then the transmitting antenna (22 ) through the detector (50
), step 517), and return to step S12. Therefore, during normal operation, position data D is read from each detected device in response to a transmission signal from the detector (50) and transmitted to the elevator control system (10).

In addition, in the detected device, after execution of the write processing step S16, the process returns to step S12, but immediately after that, the detector (50
), the data reception processing step S17 is executed as described above, and the written position data D can be checked. Incidentally, in order to check the position data D, the data transmission step S17 may be executed immediately after execution of the write processing step S16.

In this manner, by transmitting the position data D stored in the non-volatile memory (29) of each detected device to the elevator control bag ff (10) via the detector (50) during the writing operation. , writing position data DW in the elevator control device (10) and feedback position data D
It is possible to check whether the position data D has been written normally by comparing the .

Also, during normal operation, if the elevator car (4) runs at the end of the hoistway (1), the planar antenna (51) on the detector (50) side and the planar antenna (51) on the detected device side
21) or (31), the above-described transmission/reception processing operation is executed, and the position data D is read out.

Therefore, the absolute position of the elevator car (4) can be detected and safety can be ensured.

In addition, if the floor conditions of the building or the operating conditions of the elevator are changed, the elevator control device (1
By changing the program data in 0) and executing the above procedure, the position data D in the detected device can be easily and arbitrarily changed.

That is, each detected device is individualized by the learning function in response to changes in various conditions.

As a result, each detected device can be shared regardless of the installation conditions, achieving complete versatility, and the detector (
Since only one planar antenna (51) on the side 50) is required, the cost is very low. Furthermore, the planar antennas (21> and (31) on the side to be detected are connected to the planar antenna (5) on the detector side.
Since it is only necessary to face 1), there are almost no restrictions on the installation position, and the installation does not require strict positional accuracy.

In addition, in the above embodiment, the elevator control device (10)
Although the rewrite command C and the write position data are output based on the corresponding position of the detected device set in advance, the transmission signal from the detected device in response to the transmitted signal from the detector (50) The position of the detected device is detected based on the rewriting command C.
and write position data DW may be output. Alternatively, a trigger signal may be constantly transmitted from each detected device, and the rewrite command C and write position data DW may be output in response to this trigger signal.

Further, when the installation position of each detected device has been determined, the position data D may be initialized in advance in each nonvolatile memory (29). In this case, a write operation for initial setting becomes unnecessary.

Further, although the detection devices (20) and (30) are installed only at the end of the hoistway (1), they may be installed on each floor to enable floor identification. In this case, by writing unique data other than the position data D to the detected device for each floor, it becomes possible to detect the door opening/closing permission zone and to identify a specific floor for rescue in the event of a disaster.

In addition, although power is supplied to each detected device at once using the power supply line (9), if it is difficult to route the power supply line (9) along the hoistway (1), the elevator control device (10) With the power of the planar antenna (51) via the detector (50)
) may supply power by transmitting a magnetic signal of a predetermined frequency. In addition, a solar cell is installed on the side of the detected device, and the detector (5
0) or the elevator car (4).

In addition, the lengths of the planar antennas (21) and (31) on the detected device side were changed in accordance with the vertical speed of the elevator car (4), but the lengths of each planar antenna (21) and (31) They may all be the same. In this case, since the planar antennas are unified with the minimum length, the detection zone is subdivided and the number of detected devices increases, but the versatility is further improved.

Furthermore, a flat antenna (21), (
31) and (51), other non-contact transmission means such as magnetic means or optical means may be used.

[Effects of the Invention] As described above, according to the present invention, the detected device and the detector are each provided with a non-contact transmission means for transmitting position data of the detected device, and the detected device is provided with a non-contact transmission means for writing position data. A memory means is provided, and the detector writes position data to the memory means in the detected device based on a command from the elevator control device, and reads the position data from the memory means and transmits it to the elevator control device. Therefore, the device to be detected has a learning function to achieve versatility, and the restrictions on the installation position of the device to be detected and the detector are also reduced, making it possible to obtain a highly accurate and inexpensive elevator position detection device. .

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an outline of an embodiment of the present invention, and FIG.
The figure is a block diagram showing the configuration of the detector and detected device in Figure 1, Figure 3 is an explanatory diagram showing the format of the signal transmitted from the detector in Figure 1, and Figure 4 is in Figure 1. Flowchart diagram for explaining the operation of the detector, FIG.
FIG. 6 is a side view showing a conventional elevator position detection device; FIG. 7 is an enlarged perspective view showing the vicinity of the detector shown in FIG. 6. . (1... Hoistway (4)... Elevator car (10... Elevator control device (20, (30)... Detector (50)... Detector (21 = (31), (51)...Flat antenna (non-contact transmission means) (29...Nonvolatile memory (memory means) C...Rewriting command D...Position data DW
...Writing position data In the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] An elevator control device that controls the elevation of an elevator car and determines the absolute position of the elevator car; a plurality of devices to be detected provided along a hoistway of the elevator car; A non-contact transmission for transmitting position data of the detected device to the detected device and the detector, respectively, in an elevator position detection device comprising: a detector provided in the elevator car so as to face each other; means, the detected device includes a memory means for writing the position data, and the detector transmits the position data via the non-contact transmission means based on a command from the elevator control device. An elevator position detection device characterized in that the position data is written in the memory means in the detected device, and the position data stored in the memory means is read out and transmitted to the elevator control device.