JP2005255303A - Tread condition detection device for conveyance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tread condition detection device for a conveyance device allowing a worker to distinguish treads connected in an endless manner by a simple configuration to cope with actuation of a safety device and forgetting of resetting. <P>SOLUTION: When detecting a position and a condition of treads of the conveyance device for moving a plurality of treads 1 connected in the endless manner along an endless track, this tread condition detection device is provided with transmitters 7a, 7b, 7c, ..., 7k, ... which are provided on the treads 1, respectively, generate electromotive force by radio waves, operate by the electromotive force, and transmit data stored in advance to distinguish each tread by radio, a reading machine 6 for applying radio waves to the transmitters moving integrally with the treads at predetermined positions, respectively, and reading data transmitted from the transmitters, a tread distinguishing data generation means 101 for determining the data received by the reading machine to generate tread distinguishing data, and display devices 15, 20 for displaying the tread distinguishing data generated by the tread distinguishing data generation means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transport device that moves a plurality of steps connected endlessly such as an escalator and a moving road along an endless track, and more particularly to a step state detection device for a transport device that detects the position and state of a step. .

  In general, many escalators and other transport devices that have an endless track have a structure that is integrated with buildings such as buildings. When inspecting the interior, remove the steps or inspect the inside of the transport device. Not only requires tremendous effort, it is not only labor intensive but also dangerous. In addition, since the inspection of the transfer device is performed while stopping the operation of the transfer device in order to prevent danger, it is difficult to detect a sign or abnormality of a failure that occurs in the operation state of the transfer device.

  Furthermore, since it is difficult to measure the state of each part of the transport device in a transport device integrated with a building or a structure, conventionally, it has been a general idea to place a sensor in advance on the part to be measured. .

  FIG. 7 shows an apparatus for detecting the lift of an escalator step according to this concept (for example, see Patent Document 1). In the figure, the escalator has a structure in which a chain connected to a motor and a speed reducer (not shown) makes a round in the escalator. The step 1 has a front wheel 2 and a rear wheel 3, and the chain includes The front wheel 2 is connected, and the step 1 travels along the rail 4 in accordance with the movement of the chain. When the distance between the front wheel 2 (or rear wheel 3) of one adjacent step 1 and the other rear wheel 3 (or front wheel 2) is narrow, the step 1 protrudes into a staircase and the distance is wide Is stored and flattened.

The distance between the rails 4 becomes wider at the end portion of the escalator and the steps 1 are stored. However, when foreign matter such as dust adheres between the adjacent steps 1, the rear wheel 3 of the steps 1 moves along the rails 4. It does not travel, but travels while floating from the rail 4. For this reason, there is a possibility that the step 1 goes to the end of the escalator without being stored and the step 1 is damaged. In order to prevent this damage, a step lift detection switch 5 as a safety device is attached, and when the lift of the step 1 is detected, the escalator stops.
Japanese Patent Laid-Open No. 11-343092

  As described above, the escalator stops when the lift of the step is detected. However, if the escalator is suddenly stopped while the passenger is on the escalator, the passenger may fall over and it is dangerous. It is decided to. Therefore, since the step travels to some extent after the safety device actually operates, it is difficult to specify the step on which the safety device has operated.

  Moreover, even if it is forgotten to remove the step by the maintenance inspection of the escalator and perform the inspection work and to restore the step removed by the inspection mistake, the operation of the escalator becomes possible. When operating in such a state, there is a risk that an escalator passenger may be injured if he / she does not notice that the step is off and gets into a place without the step.

  The present invention has been made in view of the above circumstances, and its purpose is to identify the steps connected endlessly with a simple configuration so as to cope with the operation of the safety device and forgetting to return the step. It is an object of the present invention to provide a step state detection device for a transport device that can be performed.

  Another object of the present invention is to provide a step state detecting device for a transport device that can accurately grasp the positions of all steps connected endlessly.

  Still another object of the present invention is to provide a step state detecting device for a transport device that can identify a step in which lifting is detected.

  Another object of the present invention is to provide a step state detecting device for a transport device that can further improve safety by detecting missing steps.

The invention according to claim 1
A step state detection device for a transfer device that detects a position and a state of a step of a transfer device that moves a plurality of steps connected endlessly along an endless track,
A transmitter that is provided in each step and wirelessly transmits a step-specific signal stored in advance to identify each step;
A reader that is provided at a predetermined position and transmits a signal to a transmitter that moves integrally with the step to activate the transmitter, and reads a signal specific to the step transmitted wirelessly from the activated transmitter When,
Step identification data generating means for receiving a step specific signal read by a reader and generating a step specific signal and step position information as step identification data;
Step identification data registration means for storing the step identification data generated by the step identification data generation means;
It is the step state detection apparatus of the conveying apparatus provided with.

  According to a second aspect of the present invention, in the step state detecting device for a conveying device according to the first aspect, the step identification data registering means stores in the memory for one round according to the order of movement along the endless track. Is possible.

  According to a third aspect of the present invention, in the step state detecting device for a transport apparatus according to the first or second aspect, the step identification data generated by the step identification data generating unit and the step identification data stored by the step identification data registering unit Is provided.

  According to a fourth aspect of the present invention, in the step state detecting device of the conveying device according to the first or third aspect, the lift detecting unit, which is installed in the vicinity of the reader and detects the lift of the step, includes the lift detecting unit. A step abnormality detecting means for identifying the step where the lift detected by the lift detecting means is detected based on the step identification data of the step identifying data generating means when the lift of the step is detected; .

  According to a fifth aspect of the present invention, in the step state detecting device for a transport apparatus according to the first or third aspect, the step identification data stored in the step identification data registering means and the step identification generated by the step identification data generating means When the step identification data comparison means for comparing the data and the step identification data stored in the step registration means are different from the step identification data generated by the step identification data generation means due to the comparison by the step identification data comparison means, And step abnormality detecting means for identifying steps of different staircase identification data.

  Since the present invention is configured as described above, it is possible to identify the steps connected endlessly with a simple configuration so that the safety device can operate or cope with forgetting to return, etc. A step state detecting device is provided.

  Hereinafter, the present invention will be described in detail based on preferred embodiments shown in the drawings.

  FIG. 1 is a block diagram showing an outline of a first embodiment of a step state detecting apparatus for a conveying apparatus according to the present invention. In the figure, when moving a plurality of steps 1 connected endlessly along an endless track, transmitters 7a, 7b, 7c,..., 7k,. The transmitters 7a, 7b, 7c,..., 7k,... Function as an “electronic tag” using a semiconductor chip, and generate an electromotive force by a signal from the reader 6 when approaching the reader 6. By operating by the electromotive force, a unique signal is transmitted wirelessly to each of the steps 1. The reader 6 is fixed at a predetermined position. When transmitters 7a, 7b, 7c,..., 7k,... Moving together with the step 1 approach, signals are transmitted and transmitters 7a, 7b, 7c are transmitted. ,..., 7k,..., A signal specific to each step 1 is read.

  The step state detection device 10 receives a signal from the reader 6 and a signal from the step lift detection switch 5 and outputs an operation stop command for the transport device or displays an abnormal state on the display device 20. Step identification data generation means 101, step identification data registration means 102, step identification data comparison means 103, step abnormality detection means 104, operation stop command means 105, step identification data storage means 106, and display device 15 It has.

  Among these, the step identification data generation means 101 discriminates the data received by the reader 6 and generates step identification data, and displays the step identification data on the display device 15 or the display device 20 in response to a display request. It is configured as follows. The step identification data registration unit 102 stores the step identification data generated by the step identification data generation unit 101 in a memory for one round according to the order in which the step 1 moves along an endless track. According to the display request, the step identification data for one round is displayed on the display device 15 or the display device 20. The step identification data comparison unit 103 compares the step identification data stored in the step identification data registration unit 102 with the step identification data generated by the step identification data generation unit 101, and the comparison result is a step abnormality. It is added to the detection means 104. The step abnormality detection means 104 receives the output signal of the step lift detection switch 5 that detects the lift of the step 1 and when the lift of the step 1 is detected, the step identification data generation means 101 or the step identification data registration means 102 A function for identifying an abnormal step based on the data is compared with the step identification data stored in the step identification data registration unit 102 and the step identification data generated by the step identification data generation unit 101 to generate step identification data. And a function of determining that the step is abnormal when the data generated by the means 101 is missing. The operation stop command means 105 outputs an operation stop instruction for the transport device when the step abnormality detection means 104 determines an abnormality, and the step identification data storage means 106 stores the step identification data of the step 1 where the lift is detected. Is. When the step abnormality detecting means 104 determines that there is an abnormality, the step identification data and the abnormal state are displayed on the display device 15 and the display device 20.

  The step state detecting device 10 shown in FIG. 1 includes a step lifting detection switch 5 and a reader 6, and has a built-in display device 15 and a display device 20 connected to the outside thereof. Yes.

  Next, a more specific configuration when the step state detection device 10 configured as described above is applied to an escalator will be described with reference to FIGS. In FIG. 2, a reader 6 is provided in the truss of the escalator, and transmitters 7a, 7b, 7c,..., 7k,. The reader 6 and transmitters 7a, 7b, 7c,..., 7k,... Are generally called wireless tags, and issue signals from the reader 6 to the transmitters 7a, 7b, 7c,. Then, an electromotive force is generated in the transmitters 7a, 7b, 7c, ..., 7k, ..., and the transmitters 7a, 7b, 7c, ..., 7k, ... transmit signals to the reader 6 using the electromotive force as a power source. . When the step 1 travels, the transmitters 7a, 7b, 7c,..., 7k,... Installed on the step 1 passing on the reader 6 transmit the registered step identification data to the reader 6, respectively. Each step 1 can be determined from the transmitted data.

  FIG. 3 is a block diagram showing a detailed configuration of the step state detection device 10, in which the same reference numerals as those in FIG. 1 or 2 denote the same elements. Here, the step state detection device 10 includes a CPU 11, an input / output interface 12, a memory 13, a ROM 14, and a display device 15. Among these, the reader 6 and the display device 20 are connected to the input / output interface 12, and are connected to the CPU 11, the memory 13, the ROM 14, and the display device 15 through a common bus. As is well known, the ROM 14 pre-writes control procedures and fixed data necessary for arithmetic processing of the CPU 11 and provides them to the CPU 11 as necessary. The memory 13 includes a RAM that functions as a working area for calculation processing of the CPU 11 or an input / output buffer, and further includes a storage area for sequentially storing and holding the step identification data read by the reader 6. The display device 15 displays the latest input step identification data, step identification data for one round, data of the step 1 in which lifting is detected, and the like.

  FIG. 4 is a side view of the escalator showing an example of the detection operation by the step state detection device 10. Here, a reader 6 is installed in the vicinity of the step lift detection switch 5 that detects a lift abnormality of the step 1. When the transmitters 7a, 7b, 7c,..., 7k,... Installed on the step 1 pass over the reader 6, unique data respectively registered in the transmitters 7a, 7b, 7c,. Is transmitted to the reader 6. When the step lift detection switch 5 detects that the step 1 is abnormal, the step state detection device 10 identifies the step 1 in which the step has occurred based on the output data of the reader 6.

  FIG. 5 is a side view showing an example of an operation of detecting a state in which the step 1 is removed by inspection or the like and is not returned thereafter. In this case, the unique data of the transmitters 7a, 7b, 7c,..., 7k,. Remember me. Thereafter, while the escalator is running, data is read from the transmitter 7 a installed on the step 1 and compared with the data stored in the memory 13. Since the data is stored in the memory 13 in the order in which the steps 1 are mounted, if the step 1 is mounted without omission as shown in FIG. 7, it is transmitted from the step 1 that passes next. The incoming data of the transmitter 7 b matches the data stored at the next address in the memory 13. However, it should not be, but as shown in FIG. 5, if the step 1 is removed by inspection or the like and the vehicle is not restored, it is transmitted from the transmitter 7b installed on the step 1. The incoming data is lost, and the data of the transmitter 7c is read by the reader 6 next to the transmitter 7a, and a difference is made when compared with the data stored in the memory 13. That is, the difference in the compared data means that there is no step 1.

  Traveling without the step 1 puts the escalator passenger at risk. It is important to detect such a situation at an early stage. According to the present embodiment, if the step 1 goes around once, it is possible to detect the step 1 missing.

  FIG. 6 is a flowchart showing an example of a specific processing procedure of the CPU 11 that executes the above step state detection operation. Here, the data from the transmitter is read in step 111, and then it is determined whether or not the display mode is the display mode for the data read in step 112. If it is the display mode, the data is output to the display device in step 113. The process returns to the first step 111. If it is determined in step 112 that the mode is not the data display mode, it is further determined in step 114 whether or not it is a data registration mode. If it is the registration mode, it is determined in step 115 whether or not the escalator is activated. If it is activated, each step information data is registered in the memory in step 116, and then it is determined whether or not there is a data output request in step 117. If there is a request, it is sent to the display device in step 113. If there is no output request, the process returns to the first step 111.

  If it is determined in step 114 that the mode is not the data registration mode, it is determined in step 118 whether or not a step abnormality has occurred. If it is determined that a step abnormality has occurred, the read data is recorded in the memory in step 119. Subsequently, the escalator is stopped in step 120, and the output process to the display device in step 113 is executed. On the other hand, if it is determined in step 118 that no step abnormality has occurred, a comparison is made between the registered data in the memory and the next read data in step 121, and whether or not there is a difference in the data compared in step 122. If there is a difference, the escalator stop process in step 120 is executed. If there is a difference, the process proceeds to step 117.

  As described above, by executing the processing shown in FIG. 6, the function of each block shown in the block diagram of FIG. 1 can be realized.

  Thus, according to the first embodiment, it is possible to identify the steps connected endlessly with a simple configuration so that the safety device can operate or cope with forgetting to return, etc. It is possible to accurately grasp the positions of all the steps connected to. Furthermore, in addition to being able to identify the step where the lift was detected, it is possible to further improve safety by detecting missing steps.

  The present invention is not limited to the above-described escalator, and even if it is a moving sidewalk, it is similarly implemented as long as it is a transport device that moves a plurality of steps connected endlessly along an endless track. And the same effect as the first embodiment can be obtained.

The block diagram which shows schematic structure of 1st Example of the step state detection apparatus of the conveying apparatus which concerns on this invention. The side view of the escalator which shows the installation state of the main element which comprises 1st Example shown in FIG. The block diagram which shows the detailed structure of 1st Example shown in FIG. The side view of the escalator which shows an example of the abnormality detection operation | movement by 1st Example shown in FIG. The side view of the escalator which shows the other example of the abnormality detection operation | movement by 1st Example shown in FIG. 2 is a flowchart showing a specific processing procedure of a CPU constituting the first embodiment shown in FIG. 1. The side view which shows the structure of the general escalator shown in order to demonstrate background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Step 5 Step lift detection switch 6 Reader 7a, 7b, 7c, ..., 7k Transmitter 10 Step state detection device 20 Display device 101 Step identification data generation means 102 Step identification data registration means 103 Step identification data comparison means 104 Step Abnormality detection means 105 Operation stop command means 106 Step identification data storage means

Claims (5)

A step state detection device for a transfer device that detects a position and a state of a step of a transfer device that moves a plurality of steps connected endlessly along an endless track,
A transmitter that is provided in each of the steps and that wirelessly transmits a signal specific to the step that is stored in advance to identify each of the steps;
The transmitter is activated at a predetermined position by transmitting a signal to the transmitter that moves integrally with the step, and is specific to the step transmitted wirelessly from the activated transmitter. A reader for reading the signal;
Step identification data generating means for receiving the step specific signal read by the reader and generating the step specific signal and the position information of the step as step identification data;
Step identification data registration means for storing the step identification data generated by the step identification data generation means;
A step state detecting device for a transport device comprising:   2. The step state detecting device for a transfer device according to claim 1, wherein the step identification data registering unit can store the step identification data registration unit in a memory for one round according to an order of movement along the endless track.   The step state detecting device for a transport device according to claim 1 or 2, further comprising a display device for displaying step identification data generated by the step identification data generating unit and step identification data stored by the step identification data registering unit. . A lift detection means installed in the vicinity of the reader for detecting the lift of the step;
When the lift of the step is detected by the lift detection means, a step abnormality that identifies the step where the lift detected by the lift detection means has occurred based on the step identification data of the step identification data generation means Detection means;
A step state detecting device for a conveying device according to claim 1 or 3, further comprising: Step identification data comparison means for comparing the step identification data stored in the step identification data registration means with the step identification data generated by the step identification data generation means;
If the step identification data stored in the step registration means is different from the step identification data generated by the step identification data generation means by the comparison by the step identification data comparison means, the steps of the different step identification data are A step abnormality detecting means to be identified;
A step state detecting device for a conveying device according to claim 1 or 3, further comprising:

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