JP5923805B1 - Wireless transmission system and wireless transmission method - Google Patents

Abstract

An object of the present invention is to provide a wireless transmission system and a wireless transmission method capable of wirelessly transmitting a control signal in an elevator. A wireless transmission system according to an embodiment includes a plurality of wireless devices corresponding to each of a plurality of components of an elevator. Each of the plurality of wireless devices includes a transmission unit, a reception unit, and a counter. The transmission unit wirelessly transmits the first signal output by the component corresponding to the wireless device to another wireless device. The receiving means receives a second signal output by a component corresponding to another wireless device. The counter holds a value that is updated each time a first signal is transmitted or a second signal is received. The transmission means transmits the first signal when the value held in the counter matches a predetermined value for the wireless device. Predetermined values for each of the plurality of wireless devices are different from each other. [Selection] Figure 1

Description

  Embodiments described herein relate generally to a wireless transmission system and a wireless transmission method.

  In general, an elevator is provided with a device (hereinafter referred to as an elevator control device) for controlling the entire elevator, which is called a control panel.

  The elevator control device drives the hoisting machine to control the raising / lowering operation of the car in the hoistway and, for example, a control signal for controlling opening / closing of the car door of the car landing in a predetermined hall (landing) To the car.

  On the other hand, a control signal called a car call that is output in response to an operation on a destination floor button provided in the car is transmitted from the car to the elevator controller.

  Transmission of control signals between the elevator control device and the car is performed via a transmission cable called a tail cord that connects the elevator control device and the car.

JP 2003-040553 A

  When the up / down stroke in which the elevator (car) travels is a long distance, it is necessary to lengthen the tail cord described above.

  When the tail cord is lengthened in this way, the weight of the tail cord increases. Since the tail cord is connected to the car, it is necessary to increase the capacity of the hoisting machine for moving the car up and down as the weight of the tail cord increases.

  Therefore, there is a demand for a mechanism that wirelessly transmits control signals between the elevator controller and the car without using a tail cord.

  Furthermore, by transmitting wirelessly a control signal called a hall call that is output in response to an operation on the hall call button installed in each hall, wiring (cable) necessary for transmission of the control signal, etc. It is conceivable to simplify the process.

  Therefore, the problem to be solved by the present invention is to provide a wireless transmission system and a wireless transmission method capable of wirelessly transmitting a control signal in an elevator.

The wireless transmission system according to the embodiment includes a plurality of wireless devices corresponding to each of a plurality of components of the elevator that outputs signals used for controlling the elevator. Each of the plurality of wireless devices includes a transmission unit, a reception unit, and a counter. The transmission means wirelessly transmits a first signal output by a component corresponding to the wireless device to another wireless device other than the wireless device. The receiving unit receives a second signal transmitted from a wireless device other than the wireless device and output by a component corresponding to the other wireless device. The counter holds a value that is updated each time the first signal is transmitted or the second signal is received. The transmission means transmits the first signal when a value held in the counter matches a predetermined value for the wireless device. Predetermined values for each of the plurality of wireless devices are different from each other. The plurality of components include an elevator control device that controls at least the raising / lowering operation of the car. A plurality of values are defined for the wireless device corresponding to the elevator control device.

The figure which shows the structure of the elevator 10 in embodiment. The figure for demonstrating an example of a function structure of the some radio | wireless apparatus which comprises the radio | wireless transmission system which concerns on this embodiment. The flowchart which shows an example of the process sequence of the process performed in the radio | wireless apparatus which operate | moves as a parent node. The flowchart which shows an example of the process sequence of the process performed in the radio | wireless apparatus which operate | moves as a child node. The figure for demonstrating the specific example of operation | movement of the wireless transmission system which concerns on this embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of an elevator 10 according to the present embodiment. In the elevator 10 shown in FIG. 1, an elevator control device 11 that controls the entire elevator 10, which is referred to as a control panel, is provided in the upper part of the hoistway 20.

  In the elevator 10, a car 12 and a counterweight (balance weight) 13 are provided in a hoistway 20, and are respectively supported by guide rails (not shown) so as to be able to move up and down.

  A hoisting machine 14 connected to the elevator control device 11 is provided at the upper part of the hoistway 20. A main rope 15 having one end connected to the car 12 and the other end connected to the counterweight 13 is wound around the hoisting machine 14.

  In the elevator 10, when the hoisting machine 14 is driven based on the control of the elevator control device 11, the car 12 and the counterweight 13 connected to both ends of the main rope 15 are moved up and down in opposite directions.

  Although not shown in FIG. 1, a car control device for opening and closing a car door of the car 12 that has been landed in, for example, the halls 31 to 34 is provided at the top of the car 12.

  Further, a destination floor button is provided in the car 12. The destination floor button is a button for registering the destination floor of the user who gets in the car 12. When an operation on the destination floor button is performed by a user, a signal indicating the destination floor registered by the user (hereinafter referred to as a car call) is output.

  In addition, hall call buttons are provided in the halls 31 to 34 on each floor where the car 12 is landed. The hall call button is a button for registering the position (registration floor) of the hall where the user gets on the car 12. When the user performs an operation on the hall call button in the halls 31 to 34, a signal indicating the position and destination direction (up / down) of the hall registered by the user (hereinafter referred to as hall call) Is output.

  In the present embodiment, in the vicinity of each of a plurality of constituent elements of the elevator 10 that outputs a signal (hereinafter referred to as a control signal) used to control the elevator 10 described above, a radio corresponding to the constituent element is provided. A device is provided.

  The plurality of components of the elevator 10 include, for example, an elevator control device 11, a car 12 (destination floor button), hall call buttons installed in the halls 31 to 34 on each floor, and the like. That is, the control signal for controlling the elevator 10 in this embodiment includes, for example, various control signals for controlling the entire elevator 10 output from the elevator control device 11, and a destination floor button provided in the car 12. A car call that is output in response to an operation on the hall, a hall call that is output in response to an operation on a hall call button installed in the halls 31 to 34 on each floor, and the like are included.

  In addition, if the some component of the elevator 10 in this embodiment outputs the control signal used in order to control the elevator 10, the above-mentioned elevator control apparatus 11, the car 12 (destination floor button), Other than the hall call buttons installed in the halls 31 to 34 on each floor. Furthermore, the control signal for controlling the elevator 10 in this embodiment may be a signal (data) that needs to be transmitted and received between the components of the elevator 10.

  In FIG. 1, a wireless device 16 a is shown as a wireless device corresponding to the elevator control device 11. A wireless device 16b corresponding to the car 12 is shown. Further, wireless devices 16c to 16f are shown as wireless devices corresponding to the hall call buttons installed in the halls 31 to 34 on each floor.

  A plurality of wireless devices including the wireless devices 16a to 16f shown in FIG. 1 constitute a wireless transmission system that enables wireless transmission of control signals in the elevator 10.

  With reference to FIG. 2, the functional configuration of the plurality of radio apparatuses 16a to 16f constituting the radio transmission system according to the present embodiment will be described. In FIG. 2, for convenience, the functional configuration of the wireless device 16a among the plurality of wireless devices 16a to 16f will be described.

  As illustrated in FIG. 2, the wireless device 16 a includes a storage unit 161, a transmission / reception unit 162, a counter 163, and a control unit 164.

  The storage unit 161 stores, for example, a control signal output from a component of the elevator 10 (here, the elevator control device 11) corresponding to the wireless device 16a.

  The transmission / reception unit 162 wirelessly transmits control signals stored in the storage unit 161 (that is, control signals output from the elevator control device 11 corresponding to the wireless device 16a) to other wireless devices 16b to 16f other than the wireless device 16a. Send to.

  Moreover, the transmission / reception part 162 receives the control signal transmitted by each of the other radio | wireless line apparatuses 16b-16f. The control signal transmitted by each of the other wireless devices 16b to 16f is a control signal output by a component corresponding to the wireless devices 16b to 16f.

  The counter 163 holds a value that is updated each time a control signal is transmitted by the transmission / reception unit 162 or a control signal is received by the transmission / reception unit 162. In other words, the counter 163 has a function of counting the number of transmission / reception times of the control signal in the wireless device 16a.

  The control unit 164 is a functional unit that controls the entire wireless device 16a. The control unit 164 controls the transmission timing of the control signal in the wireless device 16a in order to avoid a signal collision phenomenon (collision) between the plurality of wireless devices 16a to 16f configuring the wireless transmission system according to the present embodiment. It has a function. Specifically, the control unit 164 transmits a control signal when the value held in the counter 163 matches a predetermined value for the wireless device 16a.

  Although the functional configuration of the wireless device 16a has been described with reference to FIG. 2, the functional configurations of the other wireless devices 16b to 16f are the same as those of the wireless device 16a, and thus detailed description thereof is omitted.

  Although not described in detail, the wireless devices 16a to 16f include, as a hardware configuration, an antenna for wireless communication, a PHY circuit that executes physical layer processing in the OSI reference model, and a data link layer in the OSI reference model. An MCU (micro control unit) that executes the process (MAC process), a ROM, a RAM, and an I / O unit that exchanges control signals with the components corresponding to the wireless device.

  In the present embodiment, a frequency band of 1 GHz or less, for example, a 920 MHz band (sub-giga band) is used for wireless transmission (transmission) of control signals by the wireless devices 16a to 16f. Since the 920 MHz band has higher radio wave reachability (that is, more easily connected) than other frequency bands (for example, 2.4 GHz band, etc.), one of the plurality of wireless devices 16a to 16f (for example, , The control signal transmitted by the wireless device 16a) is received by all other wireless devices (e.g., the wireless devices 16b-16f).

  For example, a diversity antenna can be used as an antenna for wireless communication provided in the wireless devices 16a to 16f. According to this, the communication quality and reliability between the radio | wireless apparatuses 16a-16f can be improved.

  Next, the operation of the wireless transmission system according to this embodiment will be described. In the wireless transmission system according to the present embodiment, one wireless device among the plurality of wireless devices 16a to 16b operates as a parent node. On the other hand, wireless devices other than the wireless device that operates as a parent node operate as child nodes.

  In the wireless transmission system according to the present embodiment, the wireless device that operates as a parent node and the wireless device that operates as a child node differ in processing executed in the wireless device. Hereinafter, each of the process executed in the radio apparatus operating as the parent node and the process executed in the radio apparatus operating as the child node will be described. It is assumed that the wireless device that operates as a parent node and the wireless device that operates as a child node are predetermined in the wireless transmission system. Here, it is assumed that the wireless device 16a is a wireless device that operates as a parent node, and the wireless devices 16b to 16f are wireless devices that operate as child nodes.

  First, an example of a processing procedure of processing executed in the wireless device 16a operating as a parent node will be described with reference to the flowchart of FIG. The process shown in FIG. 3 is continuously executed while the elevator 10 is in an operating state.

  When the operation (operation) of the elevator 10 is started, the transmission / reception unit 162 included in the wireless device 16a is a signal for starting transmission of a control signal between the plurality of wireless devices 16a to 16f (hereinafter referred to as a start frame). ) Is transmitted (step S1).

  When the transmission / reception unit 162 transmits the start frame, the counter 163 resets a value (hereinafter referred to as a counter value) held in the counter 163 (step S2). Specifically, the counter value is reset to 0, for example.

  The control unit 164 determines whether it is the transmission timing of the wireless device 16a in the wireless transmission system by referring to the counter value (step S3). In this case, the control unit 164 determines whether or not the counter value matches a value predetermined for the wireless device 16a (hereinafter referred to as a transmission determination value of the wireless device 16a). When the counter value matches the transmission determination value of the wireless device 16a, the control unit 164 determines that it is the transmission timing of the wireless device 16a. On the other hand, when the counter value does not match the transmission determination value of the wireless device 16a, the control unit 164 determines that it is not the transmission timing of the wireless device 16a. It is assumed that the transmission determination value of the wireless device 16a is held in advance in the wireless device 16a.

  Here, it is assumed that the transmission determination value of the wireless device 16a is zero. In this case, since the counter value after the process of step S2 is executed is 0, it is determined in step S3 that it is the transmission timing of the wireless device 16a.

  When it is determined that it is the transmission timing of the wireless device 16a (YES in step S3), the control unit 164 acquires a control signal stored in the storage unit 161. Here, the control signal acquired by the control unit 164 is a control signal output by the elevator control device 11 corresponding to the wireless device 16a, for example, a control signal for the car 12 (the car control device provided in the car 12). Signal for controlling opening and closing of the car door).

  The transmission / reception unit 162 transmits the control signal (frame) acquired by the control unit 164 (step S4).

  The counter 163 updates the counter value according to the transmission of the control signal by the transmission / reception unit 162. Specifically, the counter 163 adds 1 to the counter value (step S5).

  If the process of step S5 is performed, it will return to above-mentioned step S3 and a process will be repeated.

  When it is determined in step S3 that it is not the transmission timing of the wireless device 16a (NO in step S3), the control unit 164 determines whether the counter value needs to be reset by referring to the counter value ( Step S6). In this case, the control unit 164 determines whether or not the counter value matches an upper limit value (hereinafter referred to as a reset determination value) determined by, for example, the number of a plurality of wireless devices provided in the wireless transmission system (that is, the counter value is It is determined whether or not a reset determination value has been reached. When the counter value matches the reset determination value, the control unit 164 determines that the counter value needs to be reset. On the other hand, when the counter value does not match the reset determination value, the control unit 164 determines that the counter value does not need to be reset.

  When it is determined that the counter value does not need to be reset (NO in step S6), the control unit 164 transmits a control signal (frame carrier wave) transmitted by the other wireless devices 16b to 16f (one of the wireless devices). ) Is received by the transmission / reception unit 162 (step S7).

  When it is determined that the control signal has not been received (NO in step S7), the process in step S7 is repeated. In other words, the wireless device 16a waits until control signals are received from the other wireless devices 16b to 16f.

  On the other hand, when it is determined that the control signal has been received (YES in step S7), the process in step S5 described above is executed.

  If it is determined in step S6 that the counter value needs to be reset (YES in step S6), the process returns to step S1 described above and is repeated.

  When the wireless device 16a operating as a parent node performs the processing shown in FIG. 3 and the counter value matches the transmission determination value of the wireless device 16a after the counter value is reset by transmission of the start frame. The control signal output by the elevator control device 11 corresponding to the wireless device 16a is transmitted to the other wireless devices 16b to 16f.

  Various signals (start frame and control signal) transmitted by the wireless device 16a in the processing shown in FIG. 3 are transmitted in the sub-giga band described above, so that all other wireless devices 16b to 16f other than the wireless device 16a are transmitted. Received by.

  Next, an example of a processing procedure of processing executed in the wireless device operating as a child node will be described with reference to the flowchart of FIG. Here, a case will be described in which the processing illustrated in FIG. 4 is executed in the wireless device 16b among the wireless devices 16b to 16f operating as child codes. The process shown in FIG. 4 is continuously executed while the elevator 10 is in an operating state, similarly to the process shown in FIG. The functional configuration (storage unit, transmission / reception unit, counter, and control unit) of the wireless device 16b in the description of FIG.

  First, when the start frame is transmitted by the wireless device 16a in the process shown in FIG. 3, the transmission / reception unit 162 included in the wireless device 16b can receive the start frame.

  Therefore, the control unit 164 included in the wireless device 16b determines whether or not the start frame has been received by the transmission / reception unit 162 (step S11).

  When it is determined that the start frame has been received (YES in step S11), the counter 163 included in the wireless device 16b resets the counter value held in the counter 163 (step S12). Specifically, the counter value is reset to 0, for example.

  The control unit 164 determines whether it is the transmission timing of the wireless device 16b in the wireless transmission system by referring to the counter value (step S13). In this case, the control unit 164 determines whether or not the counter value matches a value predetermined for the wireless device 16b (hereinafter referred to as a transmission determination value of the wireless device 16b). When the counter value matches the transmission determination value of the wireless device 16b, the control unit 164 determines that it is the transmission timing of the wireless device 16b. On the other hand, when the counter value does not match the transmission determination value of the wireless device 16b, the control unit 164 determines that it is not the transmission timing of the wireless device 16b. It is assumed that the transmission determination value of the wireless device 16b is held in advance inside the wireless device 16b.

  When it is determined that it is the transmission timing of the wireless device 16b (YES in step S13), the control unit 164 acquires a control signal stored in the storage unit 161 included in the wireless device 16b. Here, the control signal acquired by the control unit 164 is a control signal output by the car 12 that is a component corresponding to the wireless device 16b. For example, a control signal for the elevator control device 11 (in the car 12). A car call representing a destination floor registered by an operation on a destination floor button).

  The transmission / reception unit 162 transmits the control signal (frame) acquired by the control unit 164 (step S14).

  The counter 163 updates the counter value according to the transmission of the control signal by the transmission / reception unit 162. Specifically, the counter 163 adds 1 to the counter value (step S15).

  If the process of step S15 is performed, it will return to above-mentioned step S13 and a process will be repeated.

  When it is determined in step S11 that the start frame is not received (NO in step S11), and in step S13, when it is determined that it is not the transmission timing of the wireless device 16b (NO in step S13), the control unit 164 Determines whether the control signal (the carrier wave of the frame) transmitted by the other wireless devices 16a, 16c to 16f (one of the wireless devices) is received by the transmitting / receiving unit 162 (step S16).

  If it is determined that the control signal has not been received (NO in step S16), the process returns to step S11 and the process is repeated. In other words, the wireless device 16b waits until a start frame or a control signal transmitted by the other wireless devices 16a, 16c to 16f is received.

  On the other hand, when it is determined that the control signal has been received (YES in step S16), the process in step S15 described above is executed.

  When the wireless device 16b operating as a child node performs the processing shown in FIG. 4 and the counter value matches the transmission determination value of the wireless device 16b after the counter value is reset by reception of the start frame. The control signal output by the car 12 corresponding to the wireless device 16b is transmitted to the other wireless devices 16a and 16c to 16f.

  The process illustrated in FIG. 4 has been described as being performed by the wireless device 16b, but the process illustrated in FIG. 4 is similarly performed in the other wireless devices 16c to 16f that operate as child nodes. Specifically, after the counter value is reset by reception of the start frame, the wireless devices 16c to 16f have values that are predetermined for the wireless devices 16c to 16f (wireless devices 16c to 16f). The transmission determination value), the control signal output by the component (the hall call button installed in the hall on each floor) corresponding to the wireless devices 16c to 16f is transmitted to the other wireless devices.

  As described above with reference to FIGS. 3 and 4, the counter 163 included in each of the plurality of wireless devices 16 a to 16 f responds to transmission of a control signal from its own device and reception of a control signal from another wireless device. To update (increment) the counter value. In other words, for example, the counter value of the counter 163 included in one wireless device that has transmitted the control signal is incremented by transmission of the control signal, and the counter value of the counter 163 included in another wireless device other than the wireless device is Incremented upon receipt of the control signal. Therefore, in this embodiment, the counter value of the counter 163 included in each of the wireless devices 16a to 16f is the same value (that is, a synchronized state) between the wireless devices 16a to 16f.

  In addition, the transmission determination values of the wireless devices 16a to 16f are different from each other. According to this, in the present embodiment, only one wireless device having the same counter value and the transmission determination value among the wireless devices 16a to 16f can transmit the control signal.

  The control signals received by the wireless devices 16a to 16f are transferred to the respective components corresponding to the wireless devices 16a to 16f, and processing corresponding to the control signals is executed in the corresponding components.

  Next, a specific example of the operation of the wireless transmission system according to the present embodiment will be described with reference to FIG.

  Here, the plurality of wireless devices constituting the wireless transmission system are wireless devices 16a to 16f. Assume that the wireless device operating as a parent node is the wireless device 16a, and the wireless devices operating as child nodes are the wireless devices 16b to 16f. The transmission determination value of the wireless device 16a is 0, the transmission determination value of the wireless device 16b is 1, the transmission determination value of the wireless device 16c is 2, the transmission determination value of the wireless device 16d is 3, the transmission determination value of the wireless device 16e is 4, It is assumed that the transmission determination value of the device 16f is 5.

  Here, the reset determination value is a value determined by the number of a plurality of wireless devices provided in the wireless transmission system. For example, 1 is added to the maximum transmission determination value (here, 5) of the wireless devices 16a to 16f. Value. Therefore, in FIG. 5, description will be made assuming that the reset determination value is 6.

  In FIG. 5, “TX” means signal transmission by each of the radio apparatuses 16 a to 16 f. “RX” means reception of a signal in each of the wireless devices 16a to 16f.

  In the following description, the counter value held in the counter 163 included in each wireless device 16a to 16f is referred to as the counter value of each wireless device 16a to 16f for convenience.

  First, it is assumed that a start frame (ST) is transmitted by the wireless device 16a operating as a parent node in step S21. In this case, the counter value of the wireless device 16a is reset to 0 by transmission of the start frame (ST).

  On the other hand, the radio devices 16b to 16f operating as child nodes receive the start frame (ST) transmitted by the radio device 16a. The counter values of the wireless devices 16b to 16f are reset to 0 when the start frame (ST) is received.

  That is, in step S21, the counter values of the wireless devices 16a to 16f are all 0.

  Here, the transmission determination value of the wireless device 16a is 0 as described above. In this case, the counter value of the wireless device 16a matches the transmission determination value of the wireless device 16a. For this reason, in step S22, the wireless device 16a transmits the control signal (DT1) output by the elevator control device 11. The control signal (DT1) transmitted by the wireless device 16a includes, for example, a control signal (for example, a control signal for controlling opening / closing of the car door) for the car 12 (the car control device provided in the car 12). The counter value of the wireless device 16a is updated to 1 by transmission of the control signal (DT1).

  On the other hand, the wireless devices 16b to 16f receive the control signal (DT1) transmitted by the wireless device 16a. The counter values of the wireless devices 16b to 16f are updated to 1 by receiving the control signal (DT1).

  That is, in step S22, the counter values of the wireless devices 16a to 16f are all 1.

  When the control signal (DT1) transmitted by the wireless device 16a includes, for example, a control signal for controlling opening / closing of the car door, the car 12 (car control device) corresponding to the wireless device 16b is: Control based on the control signal (car door opening / closing control, etc.) is executed. The components corresponding to the wireless devices 16b to 16f in this case need only execute control based on the control signals only when control signals necessary for the components are received by the wireless devices 16b to 16f. The same applies when a wireless device other than the wireless device 16a transmits a control signal.

  Next, as described above, the transmission determination value of the wireless device 16b is 1. In this case, the counter value of the wireless device 16b matches the transmission determination value of the wireless device 16b. For this reason, in step S23, the wireless device 16b transmits the control signal (DT2) output by the car 12. The control signal (DT2) transmitted by the wireless device 16b includes, for example, a control signal for the elevator control device 11 (for example, a car call representing a destination floor registered by an operation on a destination floor button installed in the car 12) ) Is included. The counter value of the wireless device 16b is updated to 2 by transmission of the control signal (DT2).

  On the other hand, the radio devices 16a and 16c to 16f receive the control signal (DT2) transmitted by the radio device 16b. The counter values of the wireless devices 16a and 16c to 16f are updated to 2 by receiving the control signal (DT2).

  That is, in step S23, the counter values of the wireless devices 16a to 16f are all 2.

  When the control signal (DT2) transmitted by the wireless device 16b includes, for example, a car call, the elevator control device 11 corresponding to the wireless device 16a performs control based on the control signal (elevating operation of the car 12). Control). Specifically, the elevator control device 11 executes control for moving (landing) the car 12 to the destination floor registered by the user based on the car call.

  Next, the transmission determination value of the wireless device 16c is 2 as described above. In this case, the counter value of the wireless device 16c matches the transmission determination value of the wireless device 16c. Here, in step S24, there is no control signal (for example, hall call output in response to an operation on the hall call button installed in the hall 31) in the wireless device 16c (the storage unit 161 included therein). Assume a case. In this case, the wireless device 16c transmits a signal (NA) indicating that there is no control signal. The counter value of the wireless device 16c is updated to 3 by transmission of the signal (NA).

  On the other hand, the wireless devices 16a, 16b, 16d to 16f receive the signal (NA) transmitted by the wireless device 16c. The counter values of the wireless devices 16a, 16b, and 16d to 16f are updated to 3 when the signal (NA) is received.

  That is, in step S24, the counter values of the wireless devices 16a to 16f are all 3.

  Note that the signal (NA) transmitted by the wireless device 16 c is not a signal used to control the elevator 10. For this reason, when a signal (NA) is received by the wireless devices 16a, 16b, and 16d to 16f, the signal (NA) needs to be passed to a component corresponding to the wireless devices 16a, 16b, and 16d to 16f. Absent.

  Next, the transmission determination value of the wireless device 16d is 3 as described above. In this case, the counter value of the wireless device 16d matches the transmission determination value of the wireless device 16d. For this reason, in step S25, the radio device 16d transmits a control signal (DT4) output in response to an operation on the hall call button installed in the hall 32. The control signal (DT4) transmitted by the wireless device 16d represents, for example, a control signal for the elevator control device 11 (for example, a hall position and destination direction registered by an operation on a hall call button installed in the hall 32). Hall call). The counter value of the wireless device 16d is updated to 4 by transmission of the control signal (DT4).

  On the other hand, the wireless devices 16a to 16c, 16e, and 16f receive the control signal (DT4) transmitted by the wireless device 16d. The counter values of the wireless devices 16a to 16c, 16e, and 16f are updated to 4 by receiving the control signal (DT4).

  That is, in step S25, the counter values of the wireless devices 16a to 16f are all 4.

  When the control signal (DT4) transmitted by the wireless device 16d includes, for example, a hall call, the elevator control device 11 corresponding to the wireless device 16a performs control based on the control signal (elevating operation of the car 12). Control). Specifically, the elevator control device 11 executes control for landing the car 12 in the hall (position) registered by the user based on the hall call.

  Next, the transmission determination value of the wireless device 16e is 4 as described above. In this case, the counter value of the wireless device 16e matches the transmission determination value of the wireless device 16e. Here, in step S26, it is assumed that the wireless device 16e that is the transmission timing is in a state where it cannot transmit a signal. When the wireless device 16e is operating normally, there is no control signal (control signal output in response to an operation on the hall call button installed in the hall 33) or the control signal from the wireless device 16e. A signal indicating that is transmitted. However, if a temporary communication failure or the like occurs in the vicinity of the wireless device 16e, there is a possibility that no signal is transmitted from the wireless device 16e. When the signal is not transmitted from the wireless device 16e in this way, the counter values of the wireless devices 16a to 16f are not updated. Therefore, none of the wireless devices 16a to 16f can transmit a signal, and the elevator 10 operates. There is a delay.

  Therefore, in the present embodiment, a wireless device (hereinafter referred to as a proxy wireless device) that transmits a signal instead of a wireless device that cannot transmit a signal as described above is selected from the plurality of wireless devices 16a to 16f. It shall be determined in advance. Here, for example, it is assumed that the wireless device 16a operating as a parent node is determined in advance as a proxy wireless device. In this case, the wireless device 16a is in a case where it is not the transmission timing of the wireless device 16a (that is, the counter value does not coincide with the transmission determination value of the wireless device 16a), and signals from the other wireless devices 16b to 16f are in a certain period. If not received, a signal (DY) instead of the signal to be transmitted from the other wireless device is transmitted. In this case, the counter value of the wireless device 16a is updated to 5 by transmission of the signal (DY).

  On the other hand, when the state in which the wireless device 16e cannot transmit a signal is temporary, and the state has been resolved, the wireless devices 16b to 16f transmit signals transmitted by the wireless device 16a. (DY) is received. The counter values of the wireless devices 16b to 16f are updated to 5 when the signal (DY) is received.

  That is, in step 26, even if a signal is not transmitted from the wireless device 16e at the transmission timing, for example, the wireless device 16a (proxy wireless device) transmits a signal as a proxy of the wireless device 16e, thereby The counter values of the devices 16a to 16f are all 5.

  When the state in which a signal cannot be transmitted from the wireless device 16e is not due to a temporary communication failure or the like but due to a failure or the like of the wireless device 16e, the wireless transmission system is a wireless device other than the wireless device 16e. Only 16a to 16d and 16f are configured to operate. Here, it is assumed that the transmission determination value of each of the wireless devices 16a to 16f is managed in the wireless device 16a that is predetermined as the proxy wireless device. According to this, based on the counter value of the wireless device 16a and the transmission determination value of each of the wireless devices 16a to 16f, the wireless device 16a identifies the wireless device that has not transmitted a signal despite the transmission timing. can do. In this case, the radio device 16a indicates that the control signal from the specified radio device is not received for a certain period, for example, via the elevator control device 11 (that is, the radio device is not operating normally). A configuration for notifying an administrator or the like is also possible.

  In addition, when the wireless device 16a that is predetermined as the proxy wireless device cannot transmit a signal, any of the plurality of wireless devices 16a to 16f cannot transmit a signal as described above. there is a possibility. In order to avoid such a situation, when the proxy radio apparatus cannot transmit a signal, a radio apparatus that transmits a signal instead of the proxy radio apparatus may be further defined.

  Further, the proxy radio apparatus may be dynamically changed in order to reduce the load on one radio apparatus predetermined as the proxy radio apparatus. Specifically, a wireless device that uses a value obtained by adding (or subtracting) 1 to the counter values of the wireless devices 16a to 16f may operate as a proxy wireless device. Further, a configuration in which wireless devices other than the wireless devices 16a to 16f are prepared as proxy wireless devices may be employed.

  Next, the transmission determination value of the wireless device 16f is 5 as described above. In this case, the counter value of the wireless device 16f matches the transmission determination value of the wireless device 16f. For this reason, in step S27, the wireless device 16f transmits a control signal (DT6) output in response to an operation on the hall call button installed in the hall 34. The control signal (DT6) transmitted by the wireless device 16f represents, for example, the control signal for the elevator control device 11 (for example, the position and destination direction of the hall registered by the operation on the hall call button installed in the hall 34). Hall call). The counter value of the wireless device 16f is updated to 6 by transmission of the control signal (DT6).

  On the other hand, the wireless devices 16a to 16e receive the control signal (DT6) transmitted by the wireless device 16f. The counter values of the wireless devices 16a to 16e are updated to 6 when the control signal (DT6) is received.

  That is, in step S27, the counter values of the wireless devices 16a to 16f are all 6.

  Here, the reset determination value is 6 as described above. In this case, the counter value of the wireless device 16a that operates as the parent node matches the reset determination value. Thus, when the counter value of the wireless device 16a matches the reset determination value, the wireless device 16a determines that the counter value of each of the wireless devices 16a to 16f has reached the upper limit. In this case, in order to continue transmission of signals by the wireless devices 16a to 16f (that is, to restart transmission of the signals), it is necessary to reset the counter values of the wireless devices 16a to 16f. For this reason, in step S28, the radio | wireless apparatus 16a transmits a start frame (ST) similarly to step S21. The counter value of the wireless device 16a is reset to 0 by transmission of the start frame (ST). Similarly, the counter values of the wireless devices 16b to 16f are reset to 0 when the start frame (ST) is received. After step S28, the wireless transmission system operates in the same manner as in step S22 and subsequent steps.

  Note that, for example, the elevator control device 11 among the plurality of constituent elements of the elevator 10 controls the entire elevator 10, and therefore, there are many opportunities to transmit a control signal as compared with other constituent elements. For this reason, by setting a plurality of values (transmission determination values) for the wireless device 16a corresponding to the elevator control device 11, for example, from the wireless device 16a until the start frame (ST) is transmitted again. It is also possible to provide the opportunity for transmitting the control signal a plurality of times. Moreover, the structure which makes the period when the radio | wireless apparatus 16a transmits a control signal longer than the period when the other radio | wireless apparatuses 16b-16f transmit a control signal may be sufficient.

  As described above, the wireless transmission system according to the present embodiment includes a plurality of wireless devices 16a to 16f corresponding to each of a plurality of components of the elevator 10 that output a signal used to control the elevator 10. Each of the plurality of wireless devices 16a to 16f transmits a control signal (first signal) output by a component corresponding to the own device from the own device, or transmits from another wireless device other than the own device. A counter 163 that holds a counter value that is updated each time the received control signal (second signal) is received. Each of the plurality of wireless devices 16a to 16f transmits a control signal when the counter value held in the counter 163 matches the transmission determination value of the own device. Note that the transmission determination values of the wireless devices 16a to 16f are different from each other.

  In the present embodiment, each of the wireless devices 16a to 16f can transmit a control signal at an appropriate transmission timing according to such a configuration, so that the signal collision phenomenon between the plurality of wireless devices 16a to 16f is prevented. The control signal in the elevator 10 can be transmitted wirelessly. In other words, according to the present embodiment, the control signal is transmitted by the implicit token passing method using the sub-giga band frequency, thereby solving the so-called hidden terminal problem in the wireless LAN, for example, relatively less than CSMA / CA. It is possible to realize efficient control signal transmission with a short waiting time.

  In the present embodiment, the wireless device (a predetermined one wireless device) 16a operating as a parent node transmits a start frame (third signal) indicating that signal transmission is started. The counter value of the wireless device 16a is reset when the start frame is transmitted. The counter values of the wireless devices 16b to 16f that operate as child nodes are reset when a start frame is received. According to such a configuration, it is possible to reset the counter value for determining the transmission timing in each of the wireless devices 16a to 16f and start wireless transmission of the control signal in the wireless transmission system.

  In the present embodiment, the wireless device 16a operating as a parent node transmits a start frame when the counter value matches an upper limit value determined by the number of wireless devices 16a to 16f. According to such a configuration, it is possible to continuously and efficiently perform wireless transmission of control signals in the wireless transmission system. The start frame may be transmitted at regular intervals.

  Furthermore, in this embodiment, the wireless device (a predetermined wireless device) 16a defined as the proxy wireless device is not the transmission timing of its own device (the counter value matches the transmission determination value of the wireless device 16a). If a control signal is not received from the other radio apparatuses 16b to 16f for a certain period, a signal (third signal) instead of the control signal is transmitted. According to such a configuration, for example, even when the other wireless devices 16b to 16f (one of the wireless devices) cannot transmit the control signal, the wireless transmission of the control signal in the wireless transmission system is continued. Can be done. In the present embodiment, it is also possible to notify, for example, the elevator control device 11 that the control signals are not received from the other wireless devices 16b to 16f for a certain period.

  In the present embodiment, when there is no control signal to be transmitted at the transmission timing of the own device, a signal (third signal) indicating that the control signal does not exist is transmitted from the corresponding component. It is possible to efficiently perform wireless transmission of the control signal in the wireless transmission system without waiting for the output of the control signal.

  In the present embodiment, for example, by setting a plurality of values (transmission determination values) for the radio device 16a corresponding to the elevator control device 11, the elevator control is performed in comparison with the components of the other elevators 10. Since the opportunity to transmit the control signal output by the device 11 can be further ensured, the wireless transmission of the control signal output by the elevator control device 11 can be performed more efficiently.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Elevator, 11 ... Elevator control apparatus, 12 ... Ride car, 13 ... Counterweight, 14 ... Hoisting machine, 15 ... Main rope, 16a-16f ... Wireless apparatus, 161 ... Storage part, 162 ... Transmission / reception part, 163 ... Counter 164 ... Control unit.

Claims (7)

A plurality of wireless devices corresponding to each of a plurality of components of the elevator that outputs signals used to control the elevator;
Each of the plurality of wireless devices is
Transmitting means for wirelessly transmitting a first signal output by a component corresponding to the wireless device to another wireless device other than the wireless device;
Receiving means for receiving a second signal transmitted from a wireless device other than the wireless device and output by a component corresponding to the other wireless device;
A counter that holds a value that is updated each time the first signal is transmitted or the second signal is received;
The transmission means transmits the first signal when a value held in the counter matches a predetermined value for the wireless device,
Predetermined values for each of the plurality of wireless devices, unlike one another,
The plurality of components include at least an elevator control device that controls the lifting operation of the car,
A wireless transmission system in which a plurality of values are determined for a wireless device corresponding to the elevator control device . Transmission means included in one predetermined wireless device among the plurality of wireless devices transmits a third signal for starting signal transmission between the plurality of wireless devices,
A counter included in the predetermined one wireless device resets a value held in the counter when the third signal is transmitted;
Receiving means included in another wireless device other than the predetermined one wireless device receives the transmitted third signal,
The wireless transmission system according to claim 1, wherein a counter included in another wireless device other than the predetermined one wireless device resets a value held in the counter when the third signal is received. .   The transmission means included in the predetermined one wireless device transmits the third signal when a value held in the counter matches an upper limit value determined by the number of the plurality of wireless devices. Item 3. The wireless transmission system according to Item 2.   The transmission means included in one predetermined wireless device among the plurality of wireless devices is a case where a value held in the counter does not match a value predetermined for the wireless device. The wireless transmission system according to claim 1, wherein when the second signal is not received for a certain period of time, a third signal serving as a substitute for the second signal is transmitted. Before first wireless device predetermined SL is a wireless device that corresponds to the elevator control device,
The wireless transmission system according to claim 4, wherein the wireless device corresponding to the elevator control device further includes notification means for notifying the elevator control device that the second signal is not received for a certain period.   The transmitting means is a case where a value held in the counter matches a value predetermined for the wireless device, and there is a first signal output by a component corresponding to the wireless device The wireless transmission system according to claim 1, wherein if not, a third signal indicating that the first signal does not exist is transmitted. A wireless transmission method executed by a wireless transmission system including a plurality of wireless devices corresponding to each of a plurality of components of the elevator that outputs a signal used to control the elevator,
Each of the plurality of wireless devices transmits a first signal output by a component corresponding to the wireless device to another wireless device other than the wireless device, or other than the wireless device Holding a value that is updated each time a second signal transmitted by a component corresponding to the other wireless device is transmitted wirelessly from the other wireless device;
Each of the plurality of wireless devices includes transmitting the first signal when the held value matches a predetermined value for the wireless device; and
Predetermined values for each of the plurality of wireless devices, unlike one another,
The plurality of components include at least an elevator control device that controls the lifting operation of the car,
A wireless transmission method in which a plurality of values are determined for a wireless device corresponding to the elevator control device .

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