CN104973469A - Communication method and system for elevator - Google Patents

Abstract

The present invention provides an elevator communication method and system capable of establishing wireless communication without stopping the elevator even when there is a failure or a replacement operation is performed. A communication method for an elevator used to transmit information on each floor to an elevator drive system controlling an elevator car in a building, including a wireless terminal connected to the elevator drive system and a plurality of wireless terminals installed on each floor of the building. The wireless terminal for the lobby, the wireless terminal for the lobby on each floor transmits information to the wireless terminal for the host through a predetermined sequence of signal transmission processing between the upper and lower floors, and transmits the information of the wireless terminal for the host to the wireless terminal for each lobby. The terminal executes information transmission by broadcast communication when the wireless terminal for the lobby cannot perform information transmission based on the signal transmission process between the upper and lower layers, and secures the information to the wireless terminal for the host through other wireless terminals for the lobby that have received the broadcast communication. communication path.

Description

Elevator communication method and system

technical field

The present invention relates to a communication method and system for an elevator, in particular to an elevator communication method and system for performing communication between a wireless terminal for a hall and a host terminal through wireless communication.

Background technique

The elevator operates mainly based on the information of the hall call button installed in the landing of each floor and the destination registration button installed in the car. These pieces of information are collected by the control device of the elevator system that controls the elevators, and the allocation control of the elevators is carried out.

Therefore, the hall call buttons installed on the halls of each floor are connected to the hall terminals installed on each floor, the destination registration buttons in the car are connected to the car terminals installed in the car, and each button (hall call buttons, destination registration buttons) are sent sequentially from each terminal (hall terminal, car terminal) to the control device of the elevator system mainly by notification. That is, it is a configuration in which the control device of the elevator system serves as the host terminal for communication.

Conventionally, the host terminal and the terminal for the hall or between the host terminal and the terminal for the car are connected by a cable for transmitting electric signals, and information is transmitted by wired communication. However, in the technique of connecting the main machine terminal, the terminal for the car, and the terminal for the lobby with cables, the cables become longer in proportion to the height of the building (building) where the elevator is installed, so the installation of the cables becomes a cumbersome task. . In addition, when the floor is high, there is a problem that a relay station and multiple transmission systems must be installed due to insufficient transmission capacity. Furthermore, since the cable between the master terminal and the terminal for the car is always moving up and down while the car is raised and lowered, there is a possibility that the cable may be broken due to bending, and periodic inspection is required.

As a method for solving the above-mentioned problems caused by wired communication, there is a method using wireless communication described in Patent Document 1, for example. In the technique described in Patent Document 1, wireless communication is performed between a terminal for a hall installed on each floor and a host terminal connected to a control device of an elevator system.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2003-146546

Contents of the invention

The problem to be solved by the invention

Patent Document 1 describes the use of wireless communication for elevators. However, in the case of wireless communication, it is necessary to consider countermeasures when wireless communication does not work.

For example, when a hall terminal fails, there is a problem that the elevator cannot be used because the call signal cannot be transmitted even if the call generation button is pressed.

In addition, for example, a structure in which information is transmitted from the wireless terminal of the car to the wireless terminal of the control panel (the host terminal serving as the communication host terminal of the control device of the elevator system) via the hall terminal, such that the hall terminal plays the role of relaying wireless communication In the case of a system configuration, there is a problem that the wireless communication is interrupted midway due to a failure of the wireless communication function of the hall terminal.

Furthermore, when replacing the failed hall terminal, it is necessary to stop the elevator, and therefore the service of the elevator is stopped. When the elevator is stopped, the user cannot use the elevator, which is inconvenient especially in high-rise buildings and the like.

Therefore, an object of the present invention is to solve the problems of the above-mentioned prior art, and in particular to provide a communication method and system for an elevator that can establish wireless communication without stopping the elevator even in the event of failure or replacement work.

Technical solutions for solving problems

In order to solve the above-mentioned problems, the present invention is an elevator communication method for transmitting information on each floor to an elevator driving system controlling an elevator car in a building, and is characterized in that: (for communication of the elevator The system) includes a wireless terminal for the host connected to the elevator drive system and a plurality of wireless terminals for the lobby installed on each floor of the building, and the wireless terminals for the lobby of each floor pass signals in a predetermined sequence between the upper and lower floors. Transfer processing to transmit information to the wireless terminal for the host, and transmit the information of the wireless terminal for the host to each wireless terminal for the lobby, when the wireless terminal for the lobby cannot perform information transmission based on the signal forwarding process between the upper and lower layers , information transmission by broadcast communication is performed, and a communication path to the host wireless terminal is secured via another wireless terminal for the hall that has received the broadcast communication.

In addition, the present invention is an elevator communication system including a wireless terminal for a host computer integrated with the elevator drive system to transmit information on each floor to an elevator drive system controlling an elevator car in a building, and a wireless terminal installed in the building. A plurality of wireless terminals for halls on each floor of the elevator communication system is characterized in that: the wireless terminals for halls on each floor include: a transmission unit that performs signal forwarding processing in a predetermined order between the upper and lower floors. The host uses the wireless terminal to transmit information, and transmits the information of the host using the wireless terminal to each hallway wireless terminal; the fault detection processing part detects that the information transmission based on the signal forwarding process between the upper and lower layers cannot be performed; The means for performing information transmission by broadcast communication when the detection processing unit detects a failure, and the means for transmitting the broadcast communication when receiving the broadcast communication secure a communication path to the host wireless terminal via other hall wireless terminals.

Invention effect

According to the present invention, the communication system of the elevator detects the failure of each wireless terminal, the state of the operation mode (normal operation, maintenance operation, repairing/replacing, etc.) By changing the communication path between each wireless terminal, the elevator can be operated without stopping.

Description of drawings

Fig. 1 is a diagram showing an overall configuration of a communication system for an elevator according to the present invention.

FIG. 2 is a diagram showing a method of ensuring communication between the host wireless terminal and the hall wireless terminal.

Fig. 3 is a block diagram showing a specific example of a wireless terminal for halls capable of relaying and receiving confirmation.

Fig. 4 is a flowchart schematically showing the processing contents of the wireless terminal for the hall.

FIG. 5 is a block diagram functionally showing processing of the host wireless terminal.

FIG. 6 is a diagram showing an example of the wireless terminal database 64 .

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

【Example】

Fig. 1 is an overall configuration diagram of an elevator communication system according to the present invention. This figure shows an elevator and its communication system. First, the elevator will be explained.

An elevator basically consists of an elevator car 7 moving across a plurality of floors within a hoistway formed in a building, connected to a counterweight 6 via ropes 5 . The elevator car 7 is moved by driving the sheave 3 with the electric motor 2 . The electric motor 2 is supplied with electric power for driving by an elevator drive system 1 including a power converter and a control device, and is braked by a brake (not shown) used to stop the car. Wherein 4 are guide wheels for sling relay.

In addition, the elevator car 7 is provided with a position detection device 8 for detecting the position of the car in the elevator passage, and a floor detector 9 is fixedly arranged on the side of the building structure forming the elevator passage. Accordingly, the floor position is detected based on the relative position between the movable position detection device 8 and the fixed floor detector 9 as the car moves in the height direction. The car position information thus detected is transmitted from the elevator car 7 to the elevator drive system 1 by wired communication using a cable or wireless communication using the car wireless terminal 30 .

Wherein, in the embodiment of Fig. 1, the car position detection device 8 is arranged on the side of the elevator car 7, but it is also possible, for example, to use a pulse generator such as an encoder installed in the motor 2 to detect the position in the lifting passage by counting the pulses. car position. In addition, it is also possible to install a magnetic tape in the lifting passage as another position detection device, and detect the position of the car by detecting the magnetic tape. The position detection device in the present invention does not depend on its detection method.

Next, the communication system of the elevator will be described. In this FIG. 1, two sets of communication systems are described. One group of communication systems is the communication system between the elevator car 7 and each floor, and the other group of communication systems is the communication system between each floor. The former is a communication system between the wireless terminal 30 for the car and the wireless terminals 20, 21, 22, 23 for the hall, and should be called a car-side communication system. The latter is a communication system constructed between the wireless terminals 20, 21, 22, and 23 for the hall and the wireless terminal 10 for the host, and is called an inter-floor communication system.

In the former, that is, the car-side communication system, the car wireless terminal 30 is installed on the elevator car 7, and the hall wireless terminals 20, 21, 22, and 23 are installed in the lobby of each floor. Dotted line arrows 40, 41, 42, 43 shown in Fig. 1 illustrate the communication between the wireless terminal 30 for the car and the wireless terminal 20, 21, 22, 23 for the hall on each floor in the former, that is, the wireless terminal 30 in the car side communication system. A channel for one-to-one communication.

The elevator communication system of the present invention is mainly concerned with the latter, that is, the inter-floor communication system. In the latter, that is, the inter-floor communication system, the signals sent to the wireless terminals 20, 21, 22, and 23 for the hall are sequentially relayed between the floors and sent to the wireless terminal 10 for the host, and the signals sent to the wireless terminal 10 for the host The data is sequentially relayed between floors and transmitted to the wireless terminals 20 , 21 , 22 , and 23 for the hall. In FIG. 1, R1, R2, R3, and R4 represent wireless channels between floors in the inter-floor communication system.

In addition, in this inter-floor communication system, the signals transmitted from the wireless terminals 20, 21, 22, and 23 for halls are, for example, call signals for each floor. Therefore, the wireless terminals 20, 21, 22, and 23 for halls on each floor are provided with buttons generally in the up and down directions for enabling passengers to call the elevator at the landing.

In addition, the elevator drive system 1 including the power converter and the control device is connected to the wireless terminal 10 for the master, and the control device receives information from the wireless terminals 20, 21, 22, and 23 for the lobby on each floor via the wireless terminal 10 for the master. The call signal of the elevator controls the power converter to perform floor control of the elevator, and transmits the floor position of the elevator at that time via the wireless terminal 10 for the master to the wireless terminal for the hall on the floor.

In addition, the drive system 1 for an elevator is provided with the operation mode change means 11 which changes the operation mode of an elevator, This is a selector for changing the operation mode of an elevator, for example. The operation mode refers to the normal operation mode for automatic operation of the elevator, the maintenance operation mode for maintenance work, the installation (assembly) operation mode for installation (assembly) operation, and the rescue operation for rescuing trapped passengers. mode etc. In these operation modes, the floors used (boarding, descending) at that time are respectively prescribed. For example, in the normal mode, it is applied so that it can be stopped on all floors, and in the maintenance operation mode, it is not stopped on a specific floor designated as a maintenance target.

When these operation modes are input to the elevator system 1, the elevator drive system 1 executes floor control of the elevator according to the instructed operation mode, and transmits the operation mode to the wireless terminal 10 for the master when the operation mode is detected. The host wireless terminal 10 transmits the contents of the operation mode to the lobby wireless terminals 20, 21, 22, and 23 on each floor according to the received operation mode. As a result, when a specific floor is targeted for maintenance due to the maintenance operation mode, for example, a new communication path excluding the wireless terminal for the lobby of the floor is constructed and forwarded communication is performed.

Next, a method for ensuring wireless communication between the host wireless terminal 10 and the lobby wireless terminals 21, 22, and 23 on each floor will be described with reference to FIG. 2 . Here, a method for changing the wireless communication path of the host wireless terminal 10 when a failure or a replacement/repair state of the wireless terminal is detected from normal communication is shown.

The upper left side of FIG. 2 shows the communication paths between the wireless terminals 21, 22, and 23 for the hall and the wireless terminal 10 for the host in a normal state. When a communication path is constituted by a plurality of wireless terminals, the communication path is usually set in advance by initial setting as shown on the upper left side of FIG. 2 . In this example, the communication path initially set in the normal state is to transmit from the wireless terminal 21 for the hall to the wireless terminal 10 for the host via 22 and 23, and from the wireless terminal 10 for the host to the wireless terminal for the hall via the wireless terminals 23 and 22 for the hall. The relay path of the wireless terminal 21. The arrow R on the upper left side of FIG. 2 indicates the direction of communication (two-way communication), and the arrow R is described between wireless terminals for halls on each floor, so it indicates transmission based on relays on each floor.

Thereby on the left side of the upper end of FIG. 2 , when an arrow 50 indicating that a call is established to the wireless terminal 22 for the hall occurs, the signal is transmitted from the wireless terminal 22 for the hall to the wireless terminal 23 for the hall through the communication path R3, and the signal is transmitted to the wireless terminal 23 for the hall by the wireless terminal 22 for the hall. The wireless terminal 23 transmits to the master wireless terminal 10 through the communication path R4 as a relay. In this way, the call needs to be transmitted to the wireless terminal 10 for the master in order to allocate an elevator car, and is usually transmitted to the wireless terminal 10 for the master using the wireless terminal for the adjacent hall as a relay.

At this time, in order to confirm whether the communication data has arrived at the receiving side correctly, the receiving side usually sends a message of completion of reception to the sending side. 23 is for relay sending. At this time, when the wireless terminal 23 for the lobby receives the communication data from the wireless terminal 22 for the lobby, it transmits a message that the reception has been completed to the wireless terminal 22 for the lobby. At this time, the signal sent back (returned) from the wireless terminal 23 for the hall to the wireless terminal 22 for the hall is a reception confirmation signal.

FIG. 3 shows a specific example of a wireless terminal for halls that can perform the above-mentioned relay and reception confirmation. As shown in the figure, the hall wireless terminal 200 is composed of an antenna 203 serving also as a transmission and reception, a transmission and reception unit 201 composed of a reception unit 201R and a transmission unit 201S, and a computing unit 202 such as a computer.

In the case where the wireless terminal 200 for the hall in FIG. 3 is 23, an example of a signal frame for wireless communication transmitted from the wireless terminal 22 for the hall to the wireless terminal 23 for the hall according to the call signal 50 is shown in S1, and the transmission destination of the address unit A is as shown in S1. The address AR is the host wireless terminal 10 , and the source address AS is the lobby wireless terminal 22 . In the data section D, the contents of the paging signal 50 are described.

When the wireless terminal 23 for the hall receives the signal frame S1 of the wireless communication, it automatically sends back the reception acknowledgment signal ACK to the wireless terminal 22 for the hall. The transmission destination address AR of the address part A of the reception acknowledgment signal ACK is the wireless terminal 22 for the lobby, and the transmission source address AS is the wireless terminal 23 for the lobby. In the data part D, the content of the return confirmation signal is described. This processing is performed automatically upon receipt.

In this regard, in the calculation unit 202, the signal frame S1 of the wireless communication is analyzed, and if the content is not aimed at itself, the source address AS of the address unit A is changed to the wireless terminal 23 for the hall, and the wireless terminal 23 is used for the host computer. The terminal 10 sends a signal S2. In addition, when the signal frame S1 of the wireless communication is aimed at itself, internal calculation processing is performed according to the reception content.

Moreover, the wireless terminal 23 for a hall monitors the reception acknowledgment signal ACK automatically transmitted by the wireless terminal for halls (including the wireless terminal 10 for hosts) on the upper floor which received the signal S2 transferred by relay. After transmitting the forwarding signal S2, the wireless terminal 23 for the hall determines that the communication with the upper layer is abnormal because the reception confirmation signal ACK is not received within a predetermined time. The abnormality determination information is sent to the wireless terminal for the lobby on the lower floor. In addition, the wireless terminal 22 for the lobby that finally issued the call signal 50 also knows it through the forwarding of the determination abnormality information. The detection content of this case includes information for specifying the location (layer or channel) where communication abnormality has occurred.

The above description has been made using the example of the wireless terminal 23 for the hall, but all the wireless terminals for the hall including the wireless terminal 10 for the master are configured to operate based on the above-mentioned communication protocol. Among them, the communication protocol can be arbitrary, but it must have a relay forwarding function and be able to identify the location of abnormality by receiving confirmation (positioning) signals and the like.

The upper center of FIG. 2 shows a state in which the wireless terminal 23 for the lobby has failed. At this time, when the call 50 is established in the wireless terminal 22 for the hall, the wireless terminal 22 for the hall transmits information to the wireless terminal 23 for the hall that relays, but the corresponding terminal among the wireless terminals 23 for the hall fails, Therefore, communication data cannot be received. Therefore, the wireless terminal 22 for the hall does not receive the information that the reception is completed, and can detect that its own information cannot be communicated correctly. In addition, the location of the communication failure at this time can be known.

The upper right side of FIG. 2 shows a method for notifying the host wireless terminal of the detected failure when the lobby wireless terminal 22 detects a failure of the lobby wireless terminal 23 . The channel in this case is represented by RX, which means, for example, that broadcast communication (broadcast communication) is performed. Usually, as shown in the upper left side of FIG. 2, the communication path of wireless communication is predetermined, but by adopting a method of communicating with unspecified multiple terminals as shown in the upper right side of FIG. The failed hall uses the wireless terminal 23 to directly transmit to the host computer using the wireless terminal 10 .

At this time, as the conditions for the wireless terminal 22 for the lobby to transmit the communication data during wireless communication, the communication method (for example, broadcasting, etc.) for unspecified multiple transmissions, the transmission destination is the wireless terminal 10 for the host, and a failure occurs. The terminal is the wireless terminal 23 for the hall, and therefore, each wireless terminal for the hall can perform retransmission until the wireless terminal 10 for the host receives the data.

Also, consider a case where the wireless terminal 22 for the hall and the wireless terminal 10 for the host are physically far apart during transmission during broadcast communication accompanied by a communication abnormality, and the wireless communication cannot reach directly. As a countermeasure, the car 30 may be moved to an intermediate point between the wireless terminal 22 for the hall and the wireless terminal 10 for the master, and the wireless terminal 30 for the car may be used as a relay (right side of the lower end in FIG. 2 ).

2 shows a state in which a direct communication path R10 has been successfully secured between the hall wireless terminal 22 and the host wireless terminal 10 excluding the wireless terminal 23 for the hall that has failed. In addition, in the state where the communication path is successfully secured by broadcast communication, the wireless terminal 22 for the hall and the wireless terminal 10 for the host are in a normal forwarding relationship, and it is only necessary to perform signal transmission and reception. Broadcast communication is only a communication method used transitionally.

In this way, the left side of the lower end of FIG. 2 shows a state where the host wireless terminal 10 has re-established the communication path after receiving failure information from the hall wireless terminal 22 . By excluding the failed wireless terminal 23 for the hall from the communication path and directly establishing a communication path with the wireless terminal 22 for the hall, the elevator can be operated even when the wireless terminal for the hall fails. In the above example, an example of the wireless terminal 22 for the hall is shown, but any wireless terminal for the hall can detect the failure of the terminal and reconfigure the path of the wireless communication by the method described above.

Fig. 4 is a flowchart schematically showing the processing contents of the wireless terminal for the hall. In the first processing step S100, it is checked whether the received signal is based on the normal transmission frame S1 of the destination or the transmission frame of the untargeted broadcast communication.

In the case of the normal transmission frame S1 specifying the destination, in processing step S101, a reception acknowledgment signal ACK is sent back, and then in processing step S102, a transfer signal S2 is issued. After the forwarding signal S2 is sent, it is confirmed in the processing step S103 whether the corresponding reception confirmation signal ACK has been received within a certain period of time. If it is successfully received, it is considered that the transmission and reception have been completed normally, and a series of processing ends (processing step S108). However, the processing of the processing step S103 is executed not only when the received signal is forwarded, but also when a call occurs in itself and a signal is sent from itself, and the confirmation processing of the reception acknowledgment signal ACK is performed.

In processing step S103, when the corresponding reception acknowledgment signal ACK is not received within a certain period of time after transmission of the repeat signal S2 (including when transmitted from itself), the following countermeasures can be taken. One of the countermeasures is to send a signal notifying the original transmission source of a reception failure. The notification of the reception failure is sequentially forwarded, and the wireless terminal for the hall which sent out the signal first also knows it. In addition, it is preferable that the received failure notification includes information for specifying the location of the failure.

Another countermeasure is to perform broadcast communication in processing step S105. The communication content in the broadcast communication includes the information of the trouble location. In addition, who performs the broadcast communication may be the wireless terminal for the hall that first detected a communication failure, or the wireless terminal for the hall that first sent out a signal. In the processing step S104 of the flowchart of FIG. 4 , it is not specified by whom, but it is described only that the fault location is specified.

Next, by broadcast communication, the master wireless terminal 10 receives it, confirms the fault location, and then notifies all hall wireless terminals of communication using a new communication path of the hall wireless terminal whose fault location has been eliminated. Then, when a new route has been successfully secured (processing step S107), the series of processing ends (processing step S108). The above processing is considered to be the processing of the wireless terminal for the hall that first started communication, but it may also be the responsibility of the wireless terminal for the hall that first detects a communication failure.

On the other hand, the processing in another hall wireless terminal that has received the broadcast communication will be described below. This processing starts when a transmission frame of broadcast communication of an unspecified destination is received in the first processing step S100. In this lobby wireless terminal, the received transmission frame of the broadcast communication is transmitted as it is (forwarding: processing step S106). Each lobby wireless terminal receiving the broadcast communication forwards the content as it is, so that the content is detected by the wireless terminal 10 for the host, and the wireless terminal 10 for the host knows the occurrence and location of the communication failure.

FIG. 5 is a block diagram functionally showing processing of the host wireless terminal 10 . According to this block diagram, in the host wireless terminal 10, the communication data and the information of the designated operation mode from each hall wireless terminal or car wireless terminal 30 are acquired, and finally sent to the wireless communication system side (each hall wireless terminal or The communication data sent by the car using the wireless terminal), or the communication data sent to the side of the elevator drive system.

Among them, focusing first on the communication data on the acquisition side, the reception processing unit 60 receives the communication data transmitted from each wireless terminal for halls or wireless terminals 30 for cars. Then, when the communication data is data for making a call from each hall wireless terminal, the information on the floor of the called car is output to the call generation processing unit 62 . In the call generation processing part 62, based on the call information output from the reception processing part 60, the moving direction and the destination floor of the car are generated, and based on the generated information on the moving direction of the car and the destination floor, the wireless terminal 10 for the host computer This information is transmitted to the elevator driving system 1 side via the transmission processing unit 66 to perform floor control of the elevator, and to communicate with the wireless communication system side (the wireless terminal for each lobby or the wireless terminal for the car) via the transmission processing unit 66. data sent. This information is displayed appropriately in the car and on each floor.

Next, in the host wireless terminal 10 , when the received communication data includes the failure information of the wireless terminal, it outputs the information of the failed terminal to the failure detection processing unit 63 . In the failure detection processing unit 63 , the failure information of the wireless terminal in the communication data processed by the reception processing unit 60 is extracted and recorded in the wireless terminal database 64 . Furthermore, the failure detection processing unit 63 transmits a command for reestablishing a wireless communication route to the communication route change processing unit 65 .

In the communication route change processing unit 65, the process of changing the route is executed in accordance with the information recorded in the wireless terminal database 64 and the instructed operation mode. Regarding the operation mode, the operation mode set by the operation mode change unit 11 is detected in the operation mode detection processing unit 61 , and the detected operation mode is output to the communication path change processing unit 65 . On the other hand, in the wireless terminal database 64, the information of each wireless terminal is accumulated, and information such as the unique code of the wireless terminal, the associated floor, and whether there is a failure is stored. In addition, the operation mode refers to the normal operation mode for automatic operation of the elevator as described above, the maintenance operation mode for maintenance work, the installation operation mode for installation operation, and the rescue operation for rescuing trapped passengers. mode etc.

The communication path change processing unit 65 outputs a command to reconfigure the communication path when there is a failed wireless terminal according to the processing in the failure detection processing unit 63 or when the communication path is to be changed according to the operation mode.

The processing here is, for example, when the elevator is in the normal operation mode of automatic operation, it is determined to carry out sequential forwarding processing between floors in the sequence on the left side of the upper end of Figure 2 according to the initial operation value, and the maintenance operation mode used when performing maintenance work In this case, it is determined that, for example, sequential transfer processing between the layers is performed in the order of excluding the wireless terminal 22 for the hall for which maintenance has been instructed. In addition, in these operation modes, when a faulty wireless terminal is found by the processing in the fault detection processing unit 63, it is determined that the faulty wireless terminal 23 for the hall is also eliminated. sequential forwarding processing.

In the transmission processing unit 66, confirmation information of a call, a command to reestablish a communication path, information indicating completion of reception of communication data, and the like are transmitted to the wireless communication system side.

FIG. 6 shows an example of a wireless terminal database 64 capable of realizing the above processing. In this example, the unique code 64A of each wireless terminal is associated with the location 64B of the terminal, and the state 64C of each terminal and whether it is in the network (network state 64D) are managed. From the example in Figure 6, it can be seen that the unique code A is associated with the 1st floor, B with the 2nd floor, C with the 4th floor, D with the 3rd floor, and E with the car. exclude.

However, since the order of the unique code 64A and the floor 64B does not necessarily match, the association between the unique code and the floor is set at the stage of installing the elevator or the like. By managing with the table in this way, when a wireless terminal is in a faulty state and is in the network, it is possible to output a command to remove the faulty wireless terminal and rebuild the communication network.

According to the above invention, it is an elevator communication system, which includes a car wireless terminal installed in the elevator car, and a multi-channel wireless terminal installed on each floor for wireless communication with the car wireless terminal and the control panel wireless terminal. A wireless terminal for the lobby, a control panel wireless terminal installed on the control panel, and an elevator operation mode changing unit. The control panel wireless terminal has communication path change processing and failure detection processing. The communication path change processing removes any wireless terminal and changes the communication path. Detect the failure of each wireless terminal and the status of the operation mode (normal operation, maintenance operation, being repaired/replaced, etc.) through the fault detection process of the wireless terminal on the control panel, and dynamically change the communication between the wireless terminals through the communication path change process path, thereby avoiding the interruption of wireless communication in the middle, and enabling the elevator to work without stopping.

Symbol Description

1: Elevator drive system; 2: Motor; 3, 4: Rope pulley; 5: Sling; 6: Counterweight; 7: Elevator car; 8: Car position detection device; 9: Floor detector; 10: Host 20, 21, 22, 23: wireless terminals for the lobby; 30: wireless terminals for the car.

Claims (8)

1. a communication means for elevator, its elevator drive system for the car to the elevator controlled in building transmits the information of each layer, it is characterized in that:

Comprise multiple entrance halls wireless terminal of the main frame wireless terminal being attached to described elevator drive system and each layer being arranged on building, the entrance hall wireless terminal of described each layer by the signal forward process being previously determined order between levels by information transmission to described main frame wireless terminal, and by the information transmission of described main frame wireless terminal to each entrance hall wireless terminal

When the information transmission of the signal forward process between entrance hall wireless terminal can not carry out based on described levels, the information performed based on broadcast communication sends, and guarantees the communication path to described main frame wireless terminal via other entrance hall wireless terminals receiving broadcast communication.

2. the communication means of elevator as claimed in claim 1, is characterized in that:

Described entrance hall wireless terminal, the backhaul signals confirmation of receipt signal when receiving signal, can not carry out based on signal forward process information transmission according to not receiving signal reception acknowledgement signal to be judged as after signal sends.

3. the communication means of elevator as claimed in claim 1 or 2, is characterized in that:

When described entrance hall wireless terminal performs the information transmission based on broadcast communication, in a part for the information of transmission, comprise the information of the entrance hall wireless terminal that there occurs transmission fault.

4. the communication means of the elevator according to any one of claims 1 to 3, is characterized in that:

The described order that predetermined signal between levels forwards is set according to the operation mode of elevator.

5. the communication means of elevator as claimed in claim 4, is characterized in that:

The described order that predetermined signal between levels forwards, when the operation mode of elevator is normal operating mode, determine the forward process successively for carrying out the order between each layer according to running initial value, when the operation mode of elevator is the maintenance operation mode carrying out upkeep operation, determine the forward process successively of the order between each layer for carrying out getting rid of after the entrance hall wireless terminal that is instructed to carry out safeguarding.

6. the communication means of the elevator according to any one of Claims 1 to 5, is characterized in that:

In the car of elevator, carry car wireless terminal, this car wireless terminal possesses the relay function for carrying out forward relay to described broadcast communication.

7. the communication system of an elevator, it elevator drive system comprised in order to the car to the elevator controlled in building transmits multiple entrance halls wireless terminal of the information of each layer and the main frame wireless terminal that is combined with described elevator drive system and each layer of being arranged on building, and the feature of the communication system of described elevator is:

The entrance hall wireless terminal of described each layer, comprise: transmission unit, it is come described main frame wireless terminal transmission information by the signal forward process of the predetermined order between levels, and the information to main frame wireless terminal described in the wireless terminal transmission of each entrance hall; Fault detection handling part, its detection can not to carry out based on described levels between the situation of information transmission of signal forward process; The unit sent based on the information of broadcast communication is performed when this fault detection handling part detects fault; With the unit sending this broadcast communication when receiving broadcast communication, guarantee the communication path to described main frame wireless terminal via other entrance hall wireless terminals.

8. the communication system of elevator as claimed in claim 7, is characterized in that:

Be attached to the main frame wireless terminal of described elevator drive system, comprise following unit: it communication path comprising the fault detection handling part and change communication path that can not carry out the situation of the information transmission based on signal forward process according to the infomation detection received changes handling part, sends new communication path when can not carry out described information transmission to described entrance hall wireless terminal.