WO2003000580A1

WO2003000580A1 - Elevator system

Info

Publication number: WO2003000580A1
Application number: PCT/JP2001/004551
Authority: WO
Inventors: Ikuo Yamato; Hiromi Inaba; Atsuya Fujino
Original assignee: Hitachi, Ltd.
Priority date: 2001-05-30
Filing date: 2001-05-30
Publication date: 2003-01-03
Also published as: JPWO2003000580A1; EP1396455B1; JP4375020B2; CN1509252A; CN1312024C; EP1396455A1; EP1396455A4

Abstract

An elevator system in which the tail codes can be decreased, the system is hardly influenced by phasing, and the car-to-controller communication time is short. In a mode of the invention, the position of a car radio terminal (31) can be deduced on the basis of the information from an encoder (52) installed in an electric motor (51) for moving a car (30). A fixed radio terminal connectable to the car radio terminal can be selected from fixed radio terminals (20 to 23). In another mode of the invention, the fixed radio terminals (20-23) search for the car radio terminal (31) periodically, and one of the fixed radio terminals is always connected to the car radio terminal. The connected fixed radio terminal puts up a flag in a controller (10). In further another mode of the invention, the car radio terminal (31) searches for the fixed radio terminals (20-23) periodically and is always connected one of them. The connected fixed radio terminal puts up a flag in the controller (10).

Description

Specification

Elevator overnight system

Technical field

The present invention relates to signal communication between an elevator car and a control device, and more particularly to an elevator communication technology using wireless communication. Background art

Conventionally, wired communication was applied to the communication between the elevator and the elevator car and the control device by cable wiring using a tail code. For this reason, the cost of wiring work was a problem. In the case of a skew elevator, it was necessary to periodically replace the tail cord, and the maintenance cost was also a problem.

As a means to solve this problem, it is conceivable to wirelessly transmit signals between the car and the control device. However, considering the radio wave environment of the hoistway, there is a possibility that sufficient transmission quality cannot be ensured due to fusing by reflected waves.

As a means to solve this problem, a low-power wireless system that connects a main controller and a plurality of fixed wireless terminals distributed and arranged by wire and connects to mobile wireless terminals in the service area can be considered. Such a wireless system is disclosed in Japanese Patent Application Laid-Open No. 7-170558. In this prior art, fixed radio terminals which are connected to a control device by wire and form a service area are distributed and arranged. With this system, in the communication between the control device and the mobile wireless terminal, data transmission is performed between the control device and the fixed wireless terminal by wired communication, and between the fixed wireless terminal and the mobile wireless terminal by wireless communication. Disclosure of the invention

When performing communication between the control device and the mobile radio terminal, the control device needs to specify which fixed radio terminal to communicate with the mobile radio terminal. In the above prior art, the control device determines which fixed wireless terminal can communicate with the mobile wireless terminal by polling each fixed wireless terminal. For this reason, when the number of fixed wireless terminals increases, it takes time to search for mobile wireless terminals, and it becomes impossible to transmit control information for every single elevator that requires real-time performance. There's a problem.

An object of the present invention is to provide an elevator system that can reduce tail codes, is less susceptible to fuzzing, and has a short communication time between a car and a control device.

Therefore, as one aspect of the present invention, a fixed wireless terminal that can be connected to a car wireless terminal is configured by estimating the position of the car wireless terminal based on information of an encoder provided in a motor that raises and lowers the car. Can be selected. Also, as another aspect of the present invention, a fixed wireless terminal periodically searches for a car wireless terminal and always connects to one of the fixed wireless terminals, and at the same time, the connected fixed wireless terminal sets a flag to the control device. I did it.

Further, as another aspect of the present invention, a car radio terminal periodically searches for a fixed radio terminal and always connects to one of the fixed radio terminals, and at the same time, the connected fixed radio terminal sets a flag to the control device. I did it. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a configuration diagram of an elevator system according to the present invention. FIG. 2 is an interrupt flow chart of the control device. FIG. 3 is a configuration diagram of a fixed wireless terminal flag in the control device. Figure 4 shows the data transmission flow of the controller. -It is a figure. FIG. 5 is a diagram showing an incoming call interrupt flow of the fixed wireless terminal. FIG. 6 is a flowchart of the reception and reception of the car radio terminal. FIG. 7 is a flowchart for searching for a car radio terminal of a fixed radio terminal. FIG. 8 is an incoming interrupt flow chart of the control device. FIG. 9 is an interrupt flow chart of the car radio terminal. FIG. 10 is a flowchart of an incoming call interruption of a fixed wireless terminal. FIG. 11 is a block diagram of another elevator system according to the present invention. FIG. 12 is a configuration diagram of another elevator system according to the present invention. FIG. 13 is a sectional view of an elevator system according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of an elevator system according to the present invention will be described with reference to the drawings.

FIG. 1 shows a configuration of an elevator system according to an embodiment of the present invention. In FIG. 1, fixed wireless terminals 20 to 23 are dispersedly arranged in a hoistway, and adjacent fixed wireless terminals 2 are arranged. 0 to 23 are connected by a transmission line. Also, a control device 10 for controlling the operation of the elevator is connected to be able to communicate with the fixed wireless terminal devices 20 to 23.

The car 30 of the elevator is provided with a car radio terminal device 31 that performs radio communication with the fixed radio terminal devices 20 to 23. The counterweight 40 is suspended along with the basket 30 on a slipper via a sheave 50 and a pulley 60. An electric motor 51 is connected to the sheave 50, and the car 30 is driven up and down by driving the electric motor. An encoder 52 is connected to the motor, and the control device 10 estimates the car position based on the output of the encoder.

The controller 10 operates while exchanging signals with the car wireless terminal 31. Perform line control. For example, a door opening / closing command, car position information, and the like are transmitted from the control device 10 to the fixed wireless terminals 20 to 23 by wire transmission, and further transmitted from the fixed wireless terminals 20 to 23 (one of them). It is transmitted to the car wireless terminal 31 by wireless transmission. In addition, the signal of the destination registration button in the car is transmitted from the car radio terminal 31 to the fixed radio terminals 20 to 23 by radio transmission. Further, the control device 1 is transmitted from the fixed radio terminals 20 to 23 by wire transmission. Transmitted to 0. The radio used here is a short-range radio that does not require a license or permission, for example, a weak radio wave with a communication range of 10 m or less and a transmission power of 1 mW or less. By using the short-range wireless communication as in the present embodiment, the influence of fading due to the reflected wave is eliminated, so that the deterioration of transmission quality can be prevented.

The operations of the control device 10, fixed wireless terminals 20 to 23, and car wireless terminal 31 in the embodiment of FIG. 1 are shown in FIGS. 2 to 6.

FIG. 2 shows an interrupt task in which the control device 10 estimates the position of the car 30 and determines a fixed wireless terminal connectable to the car wireless terminal 31.

The controller 10 periodically interrupts the timer to estimate the position of the car 30 (step 201). After the interruption in the evening, the control device 10 reads the position information of the car 30 from the encoder 52 provided in the electric motor 51 that moves up and down the car 30 (steps 202, 203). The nearest fixed wireless terminal is determined from the car position information (step 204), and the fixed wireless terminal flag assigned to a recording unit (not shown) in the control device 10 is updated (step 205). The fixed wireless terminal flag is data indicating whether each bit can be connected to each fixed wireless terminal as shown in FIG. 3, for example. By executing this operation periodically, the control device 10 can always grasp the fixed wireless terminal that can be connected to the car 30. FIG. 4 shows a task of transmitting data from the control device 10 to the car radio terminal 31 via the fixed radio terminal.

The controller 10 starts this task when transmitting data to the car wireless terminal 31. First, check the fixed wireless terminal flag described above (step

4 0 1), select a fixed wireless terminal that can be connected to the car wireless terminal 3 1, and connect to the fixed wireless terminal (step 4 0 2). Thereafter, a connection request to the car radio terminal 31 is issued (step 4003), and data to be transmitted next is transmitted to the fixed radio terminal (step 404).

Fig. 5 shows the operation of the fixed wireless terminal. The fixed wireless terminal determines whether the input is a connection request or data in response to an incoming interrupt (step 501). In the case of a connection request, a call is made to the car wireless terminal 31 (step

502), if there is a response, the connection is made (steps 503, 504). If there is no response, the controller 10 is informed (steps 503, 505). If the input is data, the data is transmitted according to the destination (steps 506 to 509).

FIG. 6 shows the operation of the car radio terminal 31.

The car radio terminal 31 receives the data from the control device 10 when an incoming interrupt occurs (step 6001), and performs a predetermined operation such as displaying the car position (step 6002).

As described above, according to the present embodiment, since the control device 10 can estimate the position of the car 30 based on the data from the encoder 52, there is no need to perform an extra polling process, and the control device 10 and the car radio terminal 31 are not required. Since data can be transmitted overnight to the car wireless terminal 31 via a connectable fixed wireless terminal, data transfer can be performed at a higher speed than conventional systems.

Another embodiment according to the present invention will be described with reference to FIGS. FIG. 7 shows a car connection task of the fixed wireless terminal according to the present invention. In the fixed wireless terminal, a timer interrupt is periodically performed to check whether the car wireless terminal 31 exists within the wireless reach. (Step 701). Evening After the interruption, the car radio terminal 31 is called (step 702), and if there is a response, the control device 10 is flagged (steps 703, 704). If there is no response, the controller 10 is informed of that (step 705). FIG. 8 shows the operation of the control device 10. If the input is a flag in response to the incoming interrupt (step 801) (step 802), the control device 10 checks the fixed wireless terminal of the transmission source (step 803). Is updated (step 800). If there is input data, the data is received (step 805).

By the above operation, the control device 10 can always recognize the fixed wireless terminal connectable to the car wireless terminal 31. Data transmission from the control device 10 to the car radio terminal 31 is the same as in FIGS. The control device 10 checks the fixed wireless terminal flag and selects a fixed wireless terminal connectable to the car wireless terminal 31 as shown in FIG. It connects to the fixed wireless terminal, issues a connection request to the car wireless terminal 31, and sends the data to be transmitted to the fixed wireless terminal. As shown in Fig. 5, the fixed wireless terminal determines whether the input is a connection request or a short response to an incoming interrupt. In the case of a connection request, a call is made to the car radio terminal 31. If a response is received, connection is made. If there is no response, the controller 10 is so notified. If the input is data, send the data according to the destination. As shown in FIG. 6, the car radio terminal 31 receives data from the control device 10 and performs a predetermined operation such as displaying a car position when an incoming call interrupt occurs. .

As described above, according to the present embodiment, the control device 10 sets the fixed wireless terminal flag A fixed wireless terminal that can be connected can be selected in a day. This eliminates the need for extra polling and allows data to be transmitted to the car via a fixed wireless terminal that can be connected to the car wireless terminal 31. be able to.

Another embodiment according to the present invention will be described with reference to FIGS. 9 and 10. FIG.

FIG. 9 shows an interrupt task of the car radio terminal 31. The car wireless terminal 31 periodically issues a timer interrupt (step 91). When an evening interrupt occurs, a search is made for a connectable fixed wireless terminal (steps 903 and 904), and a connection is made with the connectable fixed wireless terminal (step 905). Thereby, the car wireless terminal 31 is always connected to one of the fixed wireless terminals. Interrupt sources other than the evening interrupt include incoming interrupts and transmission interrupts. When an incoming call interrupt occurs, the car radio terminal 31 receives a message from the connected fixed radio terminal (step 906). When a transmission interrupt occurs, the car wireless terminal 31 transmits data to the connected fixed wireless terminal (step 907).

FIG. 10 shows the operation of the fixed wireless terminal.

The fixed wireless terminal determines whether the input is a connection request or data in response to an incoming interrupt (step 1001) (step 1002). In the case of a connection request, a connection with the car radio terminal 31 is made (step 1003), and a flag is set to the control device after the connection (step 1004). If the input is overnight, the data is transmitted according to the destination (steps 1005-108). The operation of the control device is the same as in FIG.

As described above, according to the present embodiment, the control device 10 can select a connectable fixed wireless terminal based on the data of the fixed wireless terminal flag. Therefore, there is no need to perform extra polling processing, and it is possible to connect to the car wireless terminal 31 Since data can be transmitted to a car via a wireless terminal, data can be transferred at a higher speed than conventional systems.

FIG. 11 shows another embodiment according to the present invention.

In the present embodiment, fixed wireless terminals 20 to 23 are arranged on each floor, and a call button 200 to 203 is provided. When the call button is pressed every night, a call is registered in the control device 10 via the fixed wireless terminal. According to this embodiment, the call registration of the elevator every night can be performed by the fixed wireless terminals 20 to 23, so that it is not necessary to provide another terminal for the call button.

FIG. 12 shows another embodiment according to the present invention.

This embodiment is different from the embodiment shown in FIG. 11 in that an antenna is also provided on the platform side of each fixed terminal. As a result, it is possible to communicate with the control device 10 via the fixed wireless terminal by the mobile wireless terminal 70 (mobile phone, personal computer, etc.) provided with the short-range wireless device from each landing. The information exchanged between the mobile radio terminal 70 and the control device 10 includes the following.

In the case of using the entire event, the mobile radio terminal 70 registers the call of the event every night to the control device 10. Also, the operation information (car position and driving direction) of the elevator 1 is transmitted from the control device 10 to the mobile radio terminal 70 and displayed on the display device of the mobile radio terminal 70.

When the maintenance of the elevator is performed, the maintenance information of the elevator is transmitted from the control device 10 to the mobile radio terminal 70 and displayed on the display device of the mobile radio terminal 70.

FIG. 13 is a sectional view of a hoistway according to the present invention.

In this figure, 200 is the antenna section of the fixed wireless terminal, and 310 is the car. It is an antenna unit of a wireless terminal. In the present embodiment, the antenna unit 200 of the fixed wireless terminal and the antenna unit 310 of the car wireless terminal are both installed on the horizontal projection plane at a position that does not overlap the car and the weight. With this, the positional relationship between the antenna unit 200 of the fixed wireless terminal and the antenna unit 310 of the car wireless terminal can be established, so that there is no possibility that wireless communication between the two will be hindered.

Claims

The scope of the claims

1. In an elevator system including a car moving between a plurality of floors in a hoistway and a control device for controlling the operation of the car,

A plurality of fixed wireless terminals connected to the control device via a transmission line and distributed in a hoistway, a car wireless terminal provided in the car, and a means for detecting the position of the car; and Means for selecting the fixed wireless terminal that wirelessly communicates with the car wireless terminal, and performing signal transmission between the control device and the car wireless terminal via the selected fixed wireless terminal. Elevator overnight system that features.

2. In an elevator system including a car moving between a plurality of floors in a hoistway and a control device for controlling the operation of the car,

A plurality of fixed wireless terminals connected to the control device via a transmission line and distributed in a hoistway, a car wireless terminal provided in the car, and a means for detecting the position of the car; and Means for selecting one fixed wireless terminal from the plurality of fixed wireless terminals, and performing signal transmission between the control device and the car wireless terminal via the selected fixed wireless terminal. Elevator system.

3. An elevator system provided with a car moving between a plurality of floors in a hoistway and a control device for controlling the operation of the car,

At least one of the plurality of fixed wireless terminals connected to the control device by a transmission line and distributed in a hoistway, a transmission line connecting between adjacent wireless terminals, and A car radio terminal; an encoder provided in a motor driving the car; a means for detecting a car position based on an output of the encoder; and a fixed radio terminal closest to the car radio terminal based on the detection. Means for selecting the selected fixed wireless terminal. A signal transmission between the control device and the car radio terminal via a controller.

4. An elevator system provided with a car for moving between a plurality of floors in a hoistway and a control device for controlling the operation of the car, wherein the elevator is connected to the control device by a transmission line and A plurality of fixed wireless terminals arranged in a distributed manner; a car wireless terminal provided in the car; a means for periodically searching for a fixed wireless terminal capable of communicating with the car wireless terminal; A system for transmitting and receiving signals between the control device and the car radio terminal via a terminal.

5. In an elevator system provided with a car that moves between a plurality of floors in a hoistway and a control device that controls the operation of the car, at least one of the elevator devices is connected to the control device by a transmission line. And a plurality of fixed wireless terminals distributed in the hoistway, a transmission line connecting the adjacent fixed wireless terminals, a car wireless terminal provided in the car, the car wireless terminal and the fixed Means for transmitting a connection signal to the control device at the same time as connecting the fixed wireless terminal existing in the communicable range to the car wireless terminal when the wireless terminal is within the communicable range. Means for storing the transmitted connection signal; and a fixed radio for communicating with the car radio terminal based on the stored connection signal when performing signal transmission between the control device and the car radio terminal. Jer base one coater systems that comprising the means for selecting the end.

6. In claims 1 to 5,

An elevator, wherein communication between the fixed wireless terminal and the car wireless terminal is performed by short-range wireless communication with an output power of 1 mW or less.

7. In Claims 1 to 5, An elevator system, wherein the fixed wireless terminal is installed in each hall of each elevator.

8. In claims 1 to 5,

An elevator system, wherein the fixed wireless terminal is provided with an antenna on each of an elevator hall side and a hoistway side.