JP2006256783A - Wireless data transmitting device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the labor of a maintenance worker for maintaining properly the data transmitting environment between a shaft side transmitter-receiver and a car side transmitter-receiver. <P>SOLUTION: The invention includes a driving mechanism control part 8 which changes the transmitting/receiving position of the car side transmitter-receiver 6 through a transmitter-receiver driving mechanism 5 so that the receiving sensitivity of the car side transmitter-receiver 6 does not become the predetermined level or below when data transmission is made by radio between the shaft side transmitter-receiver 4 and the car side transmitter-receiver 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevator wireless data transmission apparatus that performs wireless data transmission between a hoistway-side transceiver and a car-side transceiver.

  In the elevator operation, various data are transmitted between the elevator control device and the elevator car. As this data transmission method, a wired method using a tail cord connecting an elevator control device and an elevator car has been mainly used. However, in recent years, the impact of the presence of tail cords on the ride quality of elevators has become a problem due to demands for higher-speed elevators associated with higher building heights and the increase in weight of tail cords due to the increase in transmission information. It has become. Therefore, recently, as disclosed in Patent Document 1, for example, a method of performing data transmission between an elevator control device and an elevator car by a wireless method has been developed.

In the data transmission device according to Patent Document 1, a hoistway side (elevator control device side) transmitter / receiver is attached to a ceiling portion of a hoistway, and a car side transmitter / receiver is attached to a roof portion of a car. Data transmission by And when attaching these transmitter / receivers, in order to make the operation | work for attaching to the angle suitable for transmission / reception operation easy, it is set as the structure which displays the attachment angle of a transmitter / receiver.
JP 2000-335248 A

  However, in the case of the data transmission device according to Patent Document 1 described above, the work for attaching the transmitter / receiver to a position suitable for the transmission / reception operation has to be performed manually by the maintenance worker, and this burdens the maintenance worker. The result is compelling. In addition, even if the maintenance worker once attaches to an appropriate position, the transmission / reception operation may not be performed properly due to the subsequent environmental change in the hoistway. The mounting angle had to be adjusted.

  The present invention has been made in view of the above circumstances, and is an elevator capable of reducing the labor of maintenance workers for appropriately maintaining the data transmission environment between the hoistway side transceiver and the car side transceiver. An object of the present invention is to provide a wireless data transmission apparatus.

  As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that a hoistway-side transceiver and a car-side transceiver that perform wireless data transmission between each other, and the hoistway-side transceiver or the car-side transceiver. In order to prevent the receiver sensitivity of the transceiver mounted on the transceiver drive mechanism capable of changing the transmission / reception position or the transmission / reception direction from being attached, and the transceiver sensitivity attached to the transceiver drive mechanism from being below a predetermined level, And a drive mechanism control unit that controls the operation of the transceiver drive mechanism according to the movement of the car.

  According to a second aspect of the present invention, in the first aspect of the present invention, in the first aspect of the present invention, the operation performed by the transceiver drive mechanism is a two-degree-of-freedom operation including at least a parallel movement operation. Features.

  According to a third aspect of the present invention, in the second aspect of the invention, the two-degree-of-freedom motion includes a rotational motion.

  According to a fourth aspect of the invention, in the invention of the second or third aspect, the drive mechanism control unit drives the transceiver so that the operations of the degrees of freedom are performed simultaneously and the operation times are the same. It is characterized by controlling the operation of the mechanism.

  According to a fifth aspect of the invention, in the invention according to any one of the first to fourth aspects, the drive mechanism control unit stops the car as a calibration operation for setting the transmission / reception position or transmission / reception direction of the transceiver. It is characterized in that it has a calibration execution means for performing inside.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the transmitter / receiver includes a reception sensitivity detection unit that detects the reception sensitivity, and the calibration execution unit is connected to the reception sensitivity detection unit. The calibration is performed based on the detection signal.

  The invention according to claim 7 is the invention according to claim 5 or 6, wherein the calibration is performed for each of a plurality of predetermined locations in the hoistway, and the drive mechanism controller is provided for each of the predetermined locations. The operation of the transceiver drive mechanism is controlled based on the result of calibration.

  According to an eighth aspect of the present invention, in the invention according to any one of the fifth to seventh aspects, the drive mechanism control unit monitors a change in reception sensitivity during an elevator operation, and when the level is lowered to a predetermined level. The receiver sensitivity is returned to a predetermined level or more by control of the transceiver driving mechanism, and the receiver sensitivity monitoring means outputs a calibration re-execution command to the calibration execution means. To do.

  The invention according to claim 9 is the invention according to claim 8, wherein the reception sensitivity monitoring means controls the transceiver driving mechanism so that an operating speed of the transceiver driving mechanism corresponds to a car speed. It is characterized by being.

  According to a tenth aspect of the present invention, in the invention according to the eighth or ninth aspect, the drive mechanism control unit detects an abnormality alarm signal when an output frequency of the re-execution command by the reception sensitivity monitoring unit is equal to or higher than a set level. Is provided with an abnormality alarm issuing means for issuing an alarm to an elevator monitoring device or an elevator monitoring center.

  The invention according to claim 11 is the invention according to any one of claims 1 to 10, wherein the installation position of the hoistway side transceiver is a ceiling or floor in the hoistway, and the installation of the car side transceiver The position is characterized in that it is at the top outside or the bottom outside of the car.

  A twelfth aspect of the invention is the invention according to any one of the first to tenth aspects, wherein a plurality of the hoistway side transceivers are installed on a side wall portion in the hoistway at a predetermined distance, and the car side transmitting / receiving A plurality of machines are also installed in the car, and the drive mechanism control unit controls the operation of the transceiver drive mechanism so that the reception sensitivity of at least one transceiver is always equal to or higher than the predetermined level. It is characterized by that.

  A thirteenth aspect of the invention is characterized in that, in the invention according to any one of the first to twelfth aspects, the wireless data transmission is data transmission using an optical signal.

  According to the present invention, the hoistway-side transceiver or the car-side transceiver is attached to the transceiver drive mechanism, and the drive mechanism controller is provided with the transceiver drive mechanism so that the reception sensitivity of the transceiver does not fall below a predetermined level. Since the control is performed, the data transmission environment between the hoistway-side transceiver and the car-side transceiver is automatically maintained appropriately.

  FIG. 1 is a schematic configuration diagram of a first embodiment of the present invention. In this figure, a car 2 in which a passenger M rides in a hoistway 1 is moved up and down. The elevator control device 3 shown above the hoistway 1 performs data input / output using a hoistway side transceiver 4 attached to the ceiling of the hoistway 1 and a cable. In this embodiment, it is assumed that the elevator control device 3 is installed in the machine room above the hoistway 1. However, in an elevator system without a machine room, the elevator or elevator of a specific floor is used. It is installed on the side wall of the road 1 or the like.

  On the other hand, a transmitter / receiver drive mechanism 5 is installed on the upper outer side of the car 2, that is, on the roof, and a car-side transmitter / receiver 6 is attached to the transmitter / receiver drive mechanism 5. A car-side control device 7 is installed in the car 2, and data is input and output between the car-side control device 7 and the car-side transceiver 6 using a cable. . In addition, a drive mechanism control unit 8 is installed outside the upper portion of the car 2, and the drive mechanism control unit 8 controls the transceiver drive mechanism 5 based on the input of a signal from the car side control device 7. It has become.

  Therefore, transmission data D can be transmitted and received wirelessly between the elevator control device 3 and the car-side control device 7 via the hoistway-side transceiver 4 and the car-side transceiver 6. The drive mechanism control unit 8 controls the operation of the transceiver drive mechanism 5 so as to move the car-side transceiver 6 in a predetermined direction (in this embodiment, the X-axis direction or the Y-axis direction). The reception sensitivity of the transmitter / receiver 6 is set so as not to become below a predetermined level.

  FIG. 2 is a block diagram showing a detailed configuration of the transceiver drive mechanism 5, the car-side transceiver 6 and the drive mechanism control unit 8 in FIG. The car-side transmitter / receiver 6 has reception sensitivity detection means 6a, and also has a known serial transmission standard interface such as RS-232C, RS-422, RS485, or Ethernet or Bluetooth. This reception sensitivity detection means 6a detects the radio reception sensitivity such as the intensity and intensity distribution of the radio reception signal from the hoistway side transceiver 4. The hoistway side transceiver 4 has the same configuration as the car side transceiver 6. In the present embodiment, the wireless signal used for data transmission between the transceivers 4 and 6 is assumed to be an optical signal excellent in straightness such as infrared rays or laser, but other wireless signals such as radio waves are used. It is also possible.

  The transceiver drive mechanism 5 includes an X-axis drive unit 5x and a Y-axis drive unit 5y. The Y-axis drive unit 5 y supports the car-side transceiver 6 via the support member 9.

  The drive mechanism control unit 8 includes calibration execution means 8a, reception sensitivity monitoring means 8b, and abnormality alarm issuing means 8c. Further, the drive mechanism control unit 8 is configured to input a detection signal from the reception sensitivity detection means 6 a via the car-side control device 7.

  Prior to the normal operation of the elevator, the calibration execution means 8a performs calibration, that is, setting work relating to the transmission / reception position of the car-side transceiver 6 in the inspection mode. In this variable range setting operation, the operations of the X-axis drive unit 5x and the Y-axis drive unit 5y are controlled.

  The reception sensitivity monitoring means 8b monitors the change of the reception sensitivity detection means 6a during the normal operation of the elevator. When the reception sensitivity detection means 8b becomes lower than a predetermined level, the reception sensitivity is returned to the predetermined level or higher by controlling the transceiver drive mechanism 5. Further, a calibration re-execution command is output to the calibration execution means 8a.

  The abnormality alarm issuing means 8c is an elevator monitoring device or an elevator monitoring whose abnormality alarm signal is not shown when the output frequency of the calibration re-execution command by the reception sensitivity monitoring means 8b is equal to or higher than a set level. It is to report to the center.

  Next, calibration performed by the calibration execution unit 8a will be described with reference to FIGS. The car-side transmitter / receiver 6 is movable in the X and Y directions shown in FIG. 1 or FIG. 2, but FIG. 3 shows the reception sensitivity good region R in the X, Y coordinate plane, that is, the variable range of the car-side transmitter / receiver 6. FIG. 4 is an explanatory diagram showing a change state of the reception sensitivity good region R according to the distance between the transceivers 4 and 6.

  The calibration execution means 8a first stops the car 2 at a position where the distance between the transceivers 4 and 6 is the minimum distance L1, and positions the car-side transceiver 6 at a substantially central portion of the operable range of the transceiver drive mechanism 5. Let Then, the calibration execution means 8a controls the X-axis drive unit 5x to place the car-side transceiver 6 at the positive operation limit a1, stores the reception sensitivity at this position, and further at the negative operation limit a3. And the reception sensitivity at this position is stored. Similarly, the calibration execution means 8a controls the Y-axis drive unit 5y to place the car-side transceiver 6 at the positive operation limit a2, stores the reception sensitivity at this position, and further stores the negative operation limit. It is located at a4 and the reception sensitivity at this position is stored.

  The calibration execution means 8a preliminarily gives four reception sensitivity coordinates b1 to b4 which are located on the same circumference and obtain the same level of reception sensitivity from the reception sensitivity data at these four points a1 to a4. Calculation is performed using the coordinate correction coefficient or the coordinate correction table. Then, the centers of these four reception sensitivity coordinates b1 to b4 are set as the virtual origin Ob. Since the center position of the circle can be specified by at least three points on the circumference, the virtual origin Ob can be set by calculating only three points out of b1 to b4.

  Next, the calibration execution means 8a stops the car 2 at a position where the distance between the transceivers 4 and 6 is the maximum distance L2, and sets the virtual origin Oc by the same method as described above. Although the position of the virtual origin Ob and the position of the virtual origin Oc are supposed to coincide with each other, in reality, a certain amount of error usually occurs. If this error is small below a certain level, either the virtual origin Ob or Oc is set as the transmission / reception position, and the elevator operation is performed with the position of the car-side transceiver 6 fixed at this transmission / reception position. .

  However, if this error exceeds a certain level, the midpoint of the virtual origins Ob and Oc is set as the transmission / reception position Ow. This transmission / reception position Ow corresponds to the virtual origin at the intermediate distance L3 between the distances L1 and L2. Thus, by setting the midpoint of the virtual origins Ob, Oc as the transmission / reception position Ow, even if the theoretically correct operation origin position is close to either of the virtual origins Ob, Oc, it is extremely large. It is possible to prevent an error from occurring.

  As described above, after the car-side transceiver 6 is fixed at the transmission / reception position suitable for the transmission / reception operation by the calibration execution means 8a, the elevator control device 3 operates the elevator. The reception sensitivity monitoring unit 8b constantly monitors the change state of the reception sensitivity based on the input of the detection signal from the reception sensitivity detection unit 6a after the operation of the elevator is started. The reception sensitivity monitoring unit 8b controls the transceiver drive mechanism 5 even if the car 2 is moving when the reception sensitivity is lowered to a level near the predetermined level and may fall below the predetermined level. To restore the reception sensitivity to a level sufficiently higher than a predetermined level.

  At this time, the reception sensitivity monitoring unit 8b outputs a command for prompting the calibration execution unit 8a to re-execute calibration. Thereby, the calibration execution means 8a again executes the calibration described above while the car 2 is stopped. However, if a passenger enters the car 2 during the execution of the calibration or if a landing call from a landing on another floor occurs, the elevator control device 3 interrupts the calibration that has been performed, Prioritize the elevator operation.

  Incidentally, as described above, the reception sensitivity monitoring means 8b may control the transceiver drive mechanism 5 even when the car 2 is moving. In this case, the reception sensitivity monitoring means 8b The transceiver drive mechanism 5 is controlled so that both the drive unit 5x and the Y-axis drive unit 5y operate at the same time and have the same operation time.

  For example, when the car-side transceiver 6 is moved from the point P1 on the XY coordinate plane shown in FIG. 5 to the point P2, at first glance, it is first moved from the point P1 to the point P3 along the X-axis direction. It seems that it is the same even if it moves from point P2 to point P3. However, if such a movement is performed, as shown in FIG. 4, the size of the good reception sensitivity region R changes in the movement process of the car-side transceiver 6, so that the point P1 is changed to the point P3. In the process of moving to or the process of moving from the point P2 to the point P3, the reception sensitivity is remarkably lowered, and there is a possibility that missing transmission data is generated. Therefore, it is not possible to adopt the control in which the movement in the X-axis direction and the Y-axis direction is separately performed and the point P3 is passed in this way. Instead, the movement in the X-axis direction and the Y-axis direction is performed simultaneously. It is necessary to perform control to move directly from the point P1 to the point P2 without passing through P3.

  The reception sensitivity monitoring means 8b further causes the operation speed of the X-axis drive unit 5x or the Y-axis drive unit 5y to correspond to the moving speed of the car 2 when controlling the transceiver drive mechanism 5 while the car 2 is moving. Is preferred. For example, FIG. 6 is a characteristic diagram of the speed change of the car 2, but the reception sensitivity monitoring means 8b is, as a general rule, at a constant high operating speed during constant speed traveling so that the operating speed gradually increases during acceleration traveling. The X-axis drive unit 5x or the Y-axis drive unit 5y is controlled so that the operation speed gradually decreases during traveling. By performing such control, the reception sensitivity monitoring means 8b can reliably prevent the reception sensitivity of the car-side transceiver 6 from dropping below a predetermined level even when the car 2 is moving. become.

  As described above, the reception sensitivity monitoring unit 8b controls the transceiver drive mechanism 5 to perform reception sensitivity when the reception sensitivity is lowered to such a level that it may fall below a predetermined level during operation of the elevator. And a command for prompting the calibration execution means 8a to re-execute calibration. Usually, the re-execution of such calibration is required when the communication environment in the hoistway 1 has changed greatly due to renovation work, attachment or removal of electrical components, or the like. Therefore, in such a case, after the calibration is re-executed, the data transmission operation between the transceivers 4 and 6 is performed again without any problem. However, if any abnormality occurs in the transceivers 4 and 6 or the cable connected to the transceivers 4 and 6 is disconnected, the reception is performed even if the re-execution of calibration is repeated. Sensitivity never returns.

  The abnormality alarm issuing means 8c is provided assuming such a case. That is, the abnormality alarm issuing unit 8c issues an abnormality alarm signal to the elevator monitoring device or the elevator monitoring center when the frequency at which the reception sensitivity monitoring unit 8b outputs the calibration re-execution command is equal to or higher than the set level. I will inform you. When the elevator monitoring device or the elevator monitoring center receives this abnormality warning signal, it performs an abnormality diagnosis and stops the operation of the elevator when it is determined that the data transmission operation between the transceivers 4 and 6 cannot be performed at all. (Elevator rescue operation is carried out if necessary, and passengers are taken down at the nearest floor) and efforts are made to recover from abnormalities.

  According to the first embodiment, the transmission / reception position of the car-side transceiver 6 is always properly maintained by the drive mechanism control unit 8 via the transceiver drive mechanism 5, so that the maintenance worker can perform this transmission / reception. There is no need to perform work to maintain the proper position. Therefore, the labor of maintenance workers is greatly reduced.

  In the first embodiment, an example in which the car-side transceiver 6 changes only the transmission / reception position by the parallel movement operation in the X-axis direction and the Y-axis direction by the X-axis drive unit 5x and the Y-axis drive unit 5y will be described. did. In this case, the operation of the transceiver drive mechanism 5 is a two-degree-of-freedom operation with only a parallel movement operation. However, the operation of the transmitter / receiver drive mechanism 5 necessary for maintaining the reception sensitivity of the car-side transmitter / receiver 6 at a predetermined level or higher is not limited to the parallel movement operation, and various operations including a rotation operation for changing the transmission / reception direction are added. Possible variations.

  For example, a parallel movement in the X-axis direction as shown in FIG. 7A and a two-degree-of-freedom operation by a rotation α around the X-axis, a parallel in the X-axis direction as shown in FIG. Movement and two-degree-of-freedom movement by rotation β about the Y axis, or parallel movement in the X and Y axis directions and rotation α about the X and Y axes as shown in FIG. A 4-degree-of-freedom motion by β can be considered. However, in any of the examples, the number of degrees of freedom is at least two, and the movement must always include at least a translation movement.

  In the first embodiment, the car-side transceiver 6, the transceiver drive mechanism 5, and the drive mechanism controller 8 are installed on the upper outer side (roof) of the car 2, and the hoistway-side transceiver 4 is the hoistway 1. In the above example, the car-side transceiver 6, the transceiver drive mechanism 5, and the drive mechanism control unit 8 are installed outside the bottom of the car 2, and the floor in the hoistway 1 is shown. It is also possible to adopt a configuration in which the hoistway side transceiver 4 is installed in the section (pit section).

  Furthermore, in the first embodiment, the example in which the transmitter / receiver capable of changing the transmission / reception position or transmission / reception direction is the car-side transmitter / receiver 6 side has been described. However, the configuration for changing the transmission / reception position or transmission / reception direction of the hoistway-side transceiver 4 is described. It is also possible to adopt.

  FIG. 8 is a schematic configuration diagram of the second embodiment of the present invention. This 2nd Embodiment is a structure suitable for the elevator system of a high-rise building or a skyscraper. In other words, in these buildings, the distance between the hoistway-side transceiver and the car-side transceiver can be very large, so with only one hoistway-side transceiver, the receiving sensitivity of both transceivers is always at a predetermined level. It is difficult to keep above. Therefore, in this second embodiment, a configuration is adopted in which a plurality of transceivers are installed on both the hoistway side and the car side so that a reception sensitivity of a predetermined level or higher can always be ensured at any car position. Yes.

  In FIG. 8, a plurality of hoistway side transceivers 4A and 4B are installed at a predetermined distance on the side wall in the hoistway 1, and a plurality of car side transceivers 6A and 6B are also installed in the car 2. Has been. In FIG. 8, the transmitter / receiver drive mechanism 5, the car-side control device 7, the drive mechanism control unit 8 and the like in FIG. 1 or FIG.

  In the state where the car-side transceivers 6A and 6B are initially at the position LA, only the transceiver 6A is located within the range of the good reception sensitivity area RA for the hoistway-side transceiver 4A. Thereafter, when the car 2 is lowered and the car-side transceivers 6A and 6B are at the position LB, the transceiver 6A is out of the range of the good reception sensitivity area RA. At this time, the car-side transceiver 6B has already received the reception sensitivity. Since it is within the range of the good region RA, there is no problem in the transmission operation between the elevator control device 3 side and the car control device 7 side. Thereafter, when the car 2 is further lowered, the car-side transceiver 6B is also out of the range of the good reception sensitivity area RA. At this time, the car-side transceiver 6A has already been in the range of the good reception sensitivity area RB with respect to the hoistway-side transceiver 4B. Since it is inside, the transmission operation is not hindered.

  As described above, in the second embodiment, the reception sensitivity of at least one transceiver is always equal to or higher than a predetermined level. Therefore, in a high-rise building or a super-high-rise building in which a wireless transmission distance becomes very long. Even in an elevator system, it is possible to ensure a stable transmission operation.

The schematic block diagram of the 1st Embodiment of this invention. The block diagram which shows the detailed structure of the transmitter / receiver drive mechanism 5, the cage | basket | car side transmitter / receiver 6, and the drive mechanism control part 8 in FIG. Explanatory drawing about operation | movement of the calibration execution means 8a in FIG. Explanatory drawing about operation | movement of the calibration execution means 8a in FIG. Explanatory drawing about operation | movement of the reception sensitivity monitoring means 8b in FIG. Explanatory drawing about operation | movement of the reception sensitivity monitoring means 8b in FIG. Explanatory drawing about the operation example of the transmitter-receiver drive mechanism 5 in FIG. 1 or FIG. The schematic block diagram of the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Car 3 Elevator control apparatus 4, 4A, 4B Hoistway side transmitter / receiver 5 Transmitter / receiver drive mechanism 5y Y-axis drive part 5x X-axis drive part 6, 6A, 6B Car side transceiver 6a Reception sensitivity detection means 7 Car side Control device 8 Drive mechanism controller 8a Calibration execution means 8b Reception sensitivity monitoring means 8c Abnormal alarm issuing means 9 Support member

Claims (13)

A hoistway-side transceiver and a car-side transceiver that perform wireless data transmission between each other;
A transmitter / receiver drive mechanism capable of attaching either the hoistway-side transmitter / receiver or the car-side transmitter / receiver and capable of changing the transmission / reception position or the transmission / reception direction;
A drive mechanism control unit for controlling the operation of the transceiver drive mechanism according to the movement of the car, in order to prevent the reception sensitivity of the transceiver attached to the transceiver drive mechanism from becoming a predetermined level or less;
An elevator wireless data transmission device characterized by comprising: The operation performed by the transceiver drive mechanism is a two-degree-of-freedom operation including at least a parallel movement operation.
The elevator wireless data transmission apparatus according to claim 1. The two-degree-of-freedom motion includes a rotational motion.
The elevator wireless data transmission device according to claim 2. The drive mechanism control unit is configured to control the operation of the transceiver drive mechanism so that the operations of the degrees of freedom are performed simultaneously and the operation times are the same.
The elevator wireless data transmission device according to claim 2 or 3. The drive mechanism control unit includes calibration execution means for performing calibration as a setting operation regarding the transmission / reception position or transmission / reception direction of the transceiver while the car is stopped.
The elevator wireless data transmission apparatus according to any one of claims 1 to 4. The transceiver has reception sensitivity detection means for detecting the reception sensitivity,
The calibration execution means performs the calibration based on a detection signal from the reception sensitivity detection means.
The elevator wireless data transmission device according to claim 5. The calibration is performed at a plurality of predetermined locations in the hoistway,
The drive mechanism control unit controls the operation of the transceiver drive mechanism based on the result of calibration at each predetermined location.
The elevator wireless data transmission apparatus according to claim 5 or 6. The drive mechanism control unit monitors a change in reception sensitivity during elevator operation. When the drive mechanism control unit decreases to near a predetermined level, the drive mechanism control unit returns the reception sensitivity to a predetermined level or more by controlling the transceiver drive mechanism, and the calibration It has a reception sensitivity monitoring means for outputting a calibration re-execution command to the execution means,
The elevator wireless data transmission device according to any one of claims 5 to 7. The reception sensitivity monitoring means controls the transceiver driving mechanism so that the operating speed of the transceiver driving mechanism corresponds to a car speed.
The elevator wireless data transmission apparatus according to claim 8. The drive mechanism control unit issues an abnormal alarm signal to the elevator monitoring device or the elevator monitoring center when an output frequency of the re-execution command by the reception sensitivity monitoring unit is equal to or higher than a set level. Having means,
10. The elevator wireless data transmission apparatus according to claim 8, wherein the elevator is a wireless data transmission apparatus. The installation position of the hoistway-side transceiver is a ceiling or floor in the hoistway, and the installation position of the car-side transceiver is the top outside or the bottom outside of the car.
The elevator wireless data transmission device according to any one of claims 1 to 10. A plurality of the hoistway side transceivers are installed at a predetermined distance on the side wall in the hoistway, and a plurality of the car side transceivers are also installed in the car.
The drive mechanism control unit controls the operation of the transceiver drive mechanism so that the reception sensitivity of at least one transceiver is always equal to or higher than the predetermined level.
The elevator wireless data transmission device according to any one of claims 1 to 10. The wireless data transmission is data transmission using an optical signal.
The elevator wireless data transmission device according to any one of claims 1 to 12.

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