JP2015227239A - Control system for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system for an elevator which suppresses interference of radio waves transmitted from an antenna at a landing and an antenna at a car, and which can prevent occurrence of a region where tag detection is impossible.SOLUTION: A control system for an elevator includes: a landing antenna and a car antenna for transmitting radio signals to first and second transmission ranges respectively; a tag for transmitting a radio signal including identification information when receiving the radio signals from the landing and car antennas; a landing receiver and a car receiver capable of receiving the radio signal from the tag; and control means for outputting a landing call registration request based on the identification information of the radio signal which the landing receiver has received, and for outputting a destination floor call registration request based on the identification information of the radio signal which the car receiver has received. The first transmission range is set to include the landing, and the second transmission range is set to include the inside of the car and also it is set to be able to include the landing of the floor where the car is stopped. The control means stops the transmission of the radio signal from the landing antenna of the floor at which the car is stopped.

Description

  The present invention relates to an elevator control system.

  In the conventional elevator control system, the tag is installed in the vicinity of the hall corresponding to each service floor of the elevator, and a tag that is always owned by the elevator user and wirelessly transmits ID information unique to the user. A plurality of receiving means for receiving the ID information transmitted from the tag, and the destination information for reading the specific code included in the ID information and recognizing the destination floor information of the user holding the tag based on the specific code There is known one that includes a recognition unit and a prior call registration unit that registers a destination call in advance in response to destination floor information (see, for example, Patent Document 1).

JP 2003-341945 A

  As described above, the conventional elevator control system disclosed in Patent Document 1 is provided with receiving means for receiving ID information transmitted from a tag possessed by the user at the landing, and automatically based on the received ID information. Call registration. Moreover, although what was shown by this patent document 1 has installed the receiving means in the landing, it is also considered to provide the same receiving means in a cage | basket | car.

  Furthermore, since a power consumption increases when a radio signal is constantly transmitted from the tag, it is conceivable to use a so-called semi-active tag that transmits a radio signal in response to an external signal. However, when antennas that transmit signals to the tags are installed on both the landing and the car, radio wave interference occurs in areas where the transmission ranges of these antennas overlap, making it impossible to detect tags in those areas. End up.

  The present invention has been made to solve such a problem, and in a system that detects a semi-active type tag possessed by a user at both a landing and a car, a radio wave transmitted from a landing antenna and a car. It is possible to obtain an elevator control system capable of suppressing the interference with radio waves transmitted from the antenna and preventing the occurrence of an area where the tag cannot be detected.

  In the elevator control system according to the present invention, a hall antenna provided at the elevator hall and transmitting a radio signal inside the preset first transmission range, and provided in the elevator car and preset. A car antenna that transmits a radio signal inside the second transmission range and a user of the elevator, and when receiving a radio signal from the landing antenna and the car antenna, the user can be uniquely identified A tag that transmits a radio signal including various identification information, a landing receiver that is provided in the hall and can receive a radio signal transmitted from the tag, and a radio signal that is provided in the car and transmitted from the tag. A receivable car receiver and the control panel of the elevator based on the identification information included in the radio signal received by the hall receiver Control means for outputting a place call registration request and outputting a destination floor call registration request to the control panel based on identification information included in a radio signal received by the car receiver. The transmission range is set to include the hall, and the second transmission range includes the interior of the car, and is set to include the hall of the floor where the car is stopped, The control means is configured to stop transmission of radio signals from the landing antenna on the floor where the car is stopped.

  In the elevator control system according to the present invention, it is possible to suppress the interference between the radio wave transmitted from the landing antenna and the radio wave transmitted from the car antenna, thereby preventing the occurrence of an area where the tag cannot be detected. Play.

It is a figure which shows typically the whole structure of the state which the car of the elevator control system which concerns on Embodiment 1 of this invention does not stop at a landing. It is a figure which shows typically the whole structure of the state which the car of the elevator control system which concerns on Embodiment 1 of this invention has stopped at the landing. It is a flowchart which shows operation | movement of the control system of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control system of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the control system of the elevator which concerns on Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIGS. 1 to 5 relate to Embodiment 1 of the present invention. FIG. 1 is a diagram schematically showing an overall configuration in a state where a car of an elevator control system is not stopped at a landing, and FIG. 2 is an elevator. FIG. 3 to FIG. 5 are flowcharts schematically showing the operation of the elevator control system. FIG.

  As shown in FIGS. 1 and 2, a car 10 is provided in the elevator hoistway 1. The car 10 can move up and down in the hoistway 1 across a plurality of floors. A landing 2 is provided on each floor where the car 10 can be stopped. A car door 11 is provided in the car 10. The car door 11 opens and closes a car doorway provided in front of the car 10. Each hall 2 is provided with a hall entrance (not shown) and a hall door for opening and closing the hall entrance.

  The entire operation of the elevator including operation of the car 10 and opening / closing of the car door 11 is controlled by the elevator control panel 3. When the car 10 stops on the floor and the elevator control panel 3 opens the car door 11, the landing door of the landing 2 on the stop floor is also opened together. Then, the user 4 can go back and forth between the hall 2 on the stop floor and the inside of the car 10 through the hall entrance / exit of the hall 2 on the stop floor and the car entrance / exit of the car 10.

  The elevator user 4 possesses a tag 5. The tag 5 is a so-called semi-active RFID (Radio Frequency IDentification) tag. In the tag 5, identification information (ID) capable of uniquely identifying each of a plurality of users is recorded in advance.

  Each hall 2 is provided with a hall antenna 21 and a hall receiver 22. Further, the car 10 is provided with a car antenna 31 and a car receiver 32. The hall antenna 21 transmits a radio signal inside the preset first transmission range 41. As shown in FIG. 1, the first transmission range 41 is set to include the hall 2 where the hall antenna 21 is installed.

  The car antenna 31 transmits a radio signal inside the preset second transmission range 42. Here, the car antenna 31 and the car receiver 32 are arranged on the car door 11 side in the car 10. That is, the car antenna 31 and the car receiver 32 are disposed in the car 10 at positions as close to the landings 2 as possible. By doing so, as shown in FIGS. 1 and 2, the second transmission range 42 includes the interior of the car 10 and may include the landing 2 on the floor where the car 10 is stopped. Set to

  The radio signals transmitted by the hall antenna 21 and the car antenna 31 are LF radio waves. LF is an abbreviation for Low Frequency. That is, the LF radio waves transmitted by the hall antenna 21 and the car antenna 31 belong to the long wave band. The tag 5 can receive LF radio waves, that is, radio signals transmitted by the landing antenna 21 and the car antenna 31.

  The tag 5 is normally in a sleep state, and stops transmitting radio signals. When the tag 5 receives radio signals transmitted from the hall antenna 21 and the car antenna 31, the tag 5 is activated from the sleep state.

  The activated tag 5 transmits a radio signal including identification information recorded on the tag 5 itself. The radio signal transmitted by the tag 5 is an RF radio wave. RF is an abbreviation for Radio Frequency and means radio frequency or high frequency. That is, the RF radio wave transmitted by the tag 5 specifically belongs to, for example, a UHF (Ultra High Frequency) band. The tag 5 has a built-in battery for supplying power for transmitting a radio signal.

  The hall receiver 22 and the car receiver 32 can receive RF radio waves, that is, radio signals transmitted by the tag 5. The hall receiver 22 can particularly receive a radio signal transmitted from the tag 5 within the first transmission range 41. In addition, the car receiver 32 can receive a radio signal transmitted from the tag 5 within the second transmission range 42 in particular.

  The hall antenna 21 and the car antenna 31, and the hall receiver 22 and the car receiver 32 are controlled by the ID controller 50. When the hall receiver 22 receives the radio signal transmitted from the tag 5, the received signal is input to the ID controller 50. The ID controller 50 first acquires identification information included in the radio signal received by the hall receiver 22. Then, it is authenticated whether or not the user 4 of the identification information has the authority to use the elevator (hereinafter simply referred to as “use authority”).

  For this purpose, the ID controller 50 stores in advance identification information of the user 4 who has authority to use. The ID controller 50 collates the identification information included in the radio signal received by the hall receiver 22 with the identification information stored in advance as that of the user 4 who has authority to use.

  If the identification information stored in advance as that of the user 4 having the authority to use matches the identification information included in the received radio signal, the ID controller 50 receives the received information. It is authenticated that the user 4 of the identified identification information has the use authority (authentication success).

  On the other hand, if the identification information stored in advance as the user 4 having the authority to use does not match the identification information included in the received wireless signal, the ID controller 50 receives the received information. It is not authenticated that the user 4 of the identified identification information has the right to use (authentication failure).

  When authenticating that the user 4 of the identification information included in the radio signal received by the hall receiver 22 has the authority to use, the ID controller 50 receives the radio signal including the identification information. The hall call registration request to the floor where is installed is output to the elevator control panel 3.

  Further, a radio signal transmitted from the tag 5 received by the car receiver 32 is also input to the ID controller 50. The ID controller 50 authenticates whether or not the user 4 of the identification information included in the radio signal received by the car receiver 32 has the authority to use the same as when the hall receiver 22 receives the radio signal. .

  When the user 4 of the identification information included in the radio signal received by the car receiver 32 authenticates the use authority, the ID controller 50 sends a destination floor call registration request to the elevator control panel 3. Is output.

  Here, in order to register a destination floor call, information on the target destination floor is required. Therefore, the ID controller 50 stores the identification information of the user 4 having the use authority in advance in association with the destination floor. When the authentication of the user 4 is successful, the ID controller 50 acquires the destination floor associated with the identification information of the user 4. Then, the ID controller 50 outputs the acquired destination floor call registration request to the destination floor to the elevator control panel 3.

  Alternatively, the destination floor may be recorded in the tag 5 together with the identification information. In this case, a radio signal including identification information and a destination floor is transmitted from the tag 5 to the car receiver 32. Then, the ID controller 50 acquires the destination floor of the user 4 from the radio signal received by the car receiver 32 and outputs a destination floor call registration request.

  In this way, the ID controller 50 outputs a hall call registration request to the elevator control panel 3 based on the identification information included in the radio signal received by the hall receiver 22, and the radio received by the car receiver 32. Control means for outputting a destination floor call registration request to the elevator control panel 3 based on the identification information included in the signal is configured.

  The elevator control panel 3 registers the hall call and the destination floor call according to the hall call registration request and the destination floor call registration request, respectively. Then, the elevator control panel 3 causes the car 10 to travel so as to respond to the registered call.

  As shown in FIG. 1, when the car 10 is not stopped on any floor, the ID controller 50 transmits radio signals from both the landing antenna 21 and the car antenna 31. Therefore, when the tag 5 of the user 4 at the hall 2 enters the first transmission range 41, the tag 5 is activated and transmits a radio signal. The radio signal transmitted by the tag 5 is received by the hall receiver 22 of the hall 2, and the ID controller 50 outputs a hall call registration request to the elevator control panel 3.

  Further, when the tag 5 of the user 4 in the car 10 enters the second transmission range 42, the tag 5 is activated and transmits a radio signal. The radio signal transmitted by the tag 5 is received by the car receiver 32, and the ID controller 50 outputs a destination floor call registration request to the elevator control panel 3.

  On the other hand, as shown in FIG. 2, when the car 10 is stopped on the floor, the ID controller 50 as a control means transmits a radio signal from the landing antenna 21 on the floor where the car 10 is stopped. Stop. The ID controller 50 transmits a radio signal from the car antenna 31.

  Further, when the ID controller 50 serving as the control unit stops the transmission of the radio signal from the landing antenna 21 on the floor where the car 10 is stopped, the identification included in the radio signal received by the car receiver 32. Based on the information, both the destination floor call registration request and the hall call registration request are output to the elevator control panel 3.

  Here, as described above, the second transmission range 42 in which the radio signal is transmitted from the car antenna 31 includes the inside of the car 10 and may include the landing 2 on the floor where the car 10 is stopped. Is set to Therefore, the second transmission range 42 of the radio signal transmitted from the car antenna 31 of the car 10 stopped on the floor extends from the inside of the car 10 to the landing 2 on the floor where the car 10 is stopped. ing. That is, the tag 5 of the user 4 at the hall 2 can enter the second transmission range 42.

  In this state, when the tag 5 of the user 4 at the hall 2 enters the second transmission range 42, the tag 5 is activated and transmits a radio signal. The radio signal transmitted by the tag 5 is received by the car receiver 32, and the ID controller 50 outputs a hall call registration request to the hall 2 on the floor where the car 10 is stopped to the elevator control panel 3. .

  Further, when the tag 5 of the user 4 in the car 10 enters the second transmission range 42, the tag 5 is activated and transmits a radio signal. The radio signal transmitted by the tag 5 is received by the car receiver 32, and the ID controller 50 outputs a destination floor call registration request to the elevator control panel 3.

  The flow of the operation of the elevator control system configured as described above will be described with reference to the flowcharts of FIGS. 3 to 5 form one flow diagram based on these three figures. 3 to FIG. 5 correspond to the same reference numerals.

  First, when the car 10 is not stopped at the landing 2 in step S1 in FIG. 3, the process proceeds to step S2. In step S <b> 2, the ID controller 50 transmits a radio signal from the hall antenna 21. In the following, if a radio signal from the tag 5 is received by the hall antenna 21, the ID controller 50 outputs a hall call registration request. The ID controller 50 also transmits a radio signal from the car antenna 31. Thereafter, when the car antenna 31 receives a radio signal from the tag 5, the ID controller 50 outputs a destination floor call registration request (floor registration request).

  After step S2, the process proceeds to step S3. In step S <b> 3, the ID controller 50 confirms whether or not the tag 5 of the user 4 is in the first transmission range 41 of the hall antenna 21. If the tag 5 is in the first transmission range 41, the process proceeds to step S4. On the other hand, if the tag 5 is not in the first transmission range 41, step S3 is repeated.

  In step S <b> 4, the tag 5 that has received the radio signal from the hall antenna 21 transmits a radio signal including identification information (ID) to the hall receiver 22. In subsequent step S <b> 5, the hall receiver 22 that has received the radio signal from the tag 5 transmits identification information (ID) included in the received radio signal to the ID controller 50. Then, the process proceeds to step S6.

  In step S6, the ID controller 50 identifies the identification information (ID) included in the radio signal received by the hall receiver 22 and the identification information (ID) stored in advance as that of the user 4 who has the authority to use. ). Then, the process proceeds to step S7.

  In step S7, the result of the collation in step S6 is confirmed. If the authentication fails, the series of operation flow ends. On the other hand, if the authentication is successful, the process proceeds to step S8.

  In step S8, upon successful authentication, the ID controller 50 outputs a hall call registration request to the elevator control panel 3, and the elevator control board 3 registers the hall call. Then, in response to the registered hall call, the elevator control panel 3 causes the car 10 to travel to the floor of the hall 2, and the car 10 arrives at the floor of the hall 2.

  In subsequent step S9, the elevator control panel 3 opens the car door 11. And it progresses to step S10 and the ID controller 50 stops transmission of the radio signal from the hall antenna 21. FIG. While the transmission of the radio signal from the hall antenna 21 is stopped, the ID controller 50 requests the hall call registration request and the destination floor call registration request (floor) based on the response from the tag 5 to the radio signal transmitted from the car antenna 31. Registration request).

  After step S10, the process proceeds to step S11. When the tag 5 enters the second transmission range 42 of the car antenna 31 in step S11, the tag 5 that has received the radio signal from the car antenna 31 in the subsequent step S12 sends identification information (ID) to the car receiver 32. A radio signal including Then, the process proceeds to step S13.

  In step S <b> 13, the car receiver 32 that has received the wireless signal from the tag 5 transmits identification information (ID) included in the received wireless signal to the ID controller 50. In subsequent step S14, the ID controller 50 confirms (authenticates) the identification information (ID) and the destination floor corresponding to the identification information.

  If the authentication is successful, the ID controller 50 outputs both a hall call registration request and a destination floor call registration request. The elevator control panel 3 that has received the hall call registration request attempts to register the hall call. However, since the car 10 has already stopped and opened on the floor in step S9, the hall call is not registered. The elevator control panel 3 registers the destination floor call according to the destination floor call registration request.

  After step S14, “A” is reached, and the process proceeds from the corresponding “A” in FIG. 4 to step S15. In step S15, it is confirmed whether or not there is only one authenticated tag 5. If there is only one authenticated tag 5, the process proceeds to step S16. In step S <b> 16, after the user 4 of the tag 5 gets on the car 10, the elevator control panel 3 closes the car door 11.

  In subsequent step S <b> 17, the ID controller 50 restarts transmission of radio signals from the hall antenna 21. In the following, if a radio signal from the tag 5 is received by the hall antenna 21, the ID controller 50 outputs a hall call registration request. If the car antenna 31 receives a radio signal from the tag 5, the ID controller 50 outputs a destination floor call registration request (floor registration request).

  After step S17, the process proceeds to step S18. In step S18, the elevator control panel 3 causes the car 10 to travel to the destination floor according to the destination floor call registration. And a series of operation | movement flows are complete | finished.

  On the other hand, if there is not only one tag 5 authenticated in step S15, the process proceeds to step S19. In step S19, it is confirmed whether or not the direction of the destination floor associated with the identification information of the plurality of authenticated tags 5 and the traveling direction of the car 10 are the same. If the direction of the destination floor associated with the identification information of the plurality of tags 5 is the same as the traveling direction of the car 10, the process proceeds to step S16.

  On the other hand, if the direction of the destination floor associated with the identification information of the plurality of tags 5 and the traveling direction of the car 10 are not the same, the process proceeds to step S20. In step S20, the elevator control panel 3 causes the car 10 to travel so as to give priority to the destination floor of the previously authenticated tag 5. In subsequent step S27, the tag 5 is assigned to the destination floor in a direction different from the traveling direction of the car 10.

  The specific method of this treatment differs slightly depending on whether the elevator includes a plurality of cars 10 or only one car 10. When the elevator includes a plurality of cars 10, the elevator control panel 3 calls another car 10. If the elevator is provided with only one car 10, the elevator control panel 3 calls the same car 10 again after responding to the call to the destination floor prioritized in step S20. After step S27, “B” is reached, and the process proceeds from the corresponding “B” in FIG. 3 to step S8.

  On the other hand, if the car 10 is stopped at the landing 2 in step S1 in FIG. 3, the process reaches “C” and proceeds from the corresponding “C” in FIG. 5 to step S28. Note that step S1 in FIG. 5 represents the same step as step S1 in FIG. Therefore, if the car 10 is not stopped at the landing 2 in step S1 in FIG. 5, the process reaches “D” and proceeds from the corresponding “D” in FIG. 3 to step S2.

  In step S28, the ID controller 50 stops the transmission of the radio signal from the hall antenna 21. While the transmission of the radio signal from the hall antenna 21 is stopped, the ID controller 50 requests the hall call registration request and the destination floor call registration request (floor) based on the response from the tag 5 to the radio signal transmitted from the car antenna 31. Registration request).

  After step S28, the process proceeds to step S29. In step S <b> 29, the ID controller 50 confirms whether the tag 5 of the user 4 is in the second transmission range 42 of the car antenna 31. If the tag 5 is in the second transmission range 42, the process proceeds to step S30. On the other hand, if the tag 5 is not in the second transmission range 42, step S29 is repeated.

  In step S <b> 30, the tag 5 that has received the radio signal from the car antenna 31 transmits a radio signal including identification information (ID) to the car receiver 32. In subsequent step S <b> 31, the car receiver 32 that has received the radio signal from the tag 5 transmits identification information (ID) included in the received radio signal to the ID controller 50. Then, the process proceeds to step S32.

  In step S32, the ID controller 50 identifies the identification information (ID) included in the radio signal received by the car receiver 32, and the identification information (ID) stored in advance as that of the user 4 having the authority to use. ). Then, the process proceeds to step S33.

  In step S33, the collation result in step S32 is confirmed, and if the authentication fails, the series of operation flow ends. On the other hand, if the authentication is successful, the process proceeds to step S34.

  In step S <b> 34, the ID controller 50 outputs a hall call registration request to the elevator control panel 3 upon successful authentication. The elevator control panel 3 that has received the hall call registration request attempts to register the hall call. However, since the car 10 has already stopped on the floor, the elevator control panel 3 opens the car door 11 without registering the hall call.

  After step S34, the process proceeds to step S35. In step S <b> 35, after the car door 11 is opened, the ID controller 50 checks whether the tag 5 of the user 4 is in the second transmission range 42 of the car antenna 31. If the tag 5 is in the second transmission range 42, the process reaches “E” in FIG. 5 and proceeds from the corresponding “E” in FIG. 3 to step S12.

  On the other hand, if the tag 5 is not in the second transmission range 42, the process proceeds to step S36. In step S36, it is determined that the user 4 who was at the landing 2 has left, and the elevator control panel 3 closes the car door 11. And a series of operation | movement flow is complete | finished, or it returns to step S1 and performs a flow again.

  The elevator control system configured as described above is provided in the hall 2, provided in the hall 10 for transmitting a radio signal inside the preset first transmission range 41, and in the car 10, and set in advance. The car antenna 31 that transmits radio signals to the inside of the second transmission range 42 and the user 4 possessed and receives radio signals from the landing antenna 21 and the car antenna 31 to uniquely identify the user 4 A tag 5 that transmits a wireless signal including possible identification information, a landing receiver 22 that is provided in the hall 2 and that can receive a wireless signal transmitted from the tag 5, and a car 10 that is transmitted from the tag 5. A hall call registration request is output to the elevator control panel 3 based on the identification information included in the radio signal received by the car receiver 32 and the hall receiver 22 that can receive the radio signal. Rutotomoni, a, and ID controller 50 is a control means for outputting the destination floor call registration request to the elevator control panel 3 based on the identification information included in the radio signal received by the car receiver 32. The first transmission range 41 is set so as to include the hall 2, and the second transmission range 42 includes the interior of the car 10 and includes the hall floor 2 where the car 10 is stopped. The ID controller 50 that is set so as to obtain the control means stops the transmission of the radio signal from the hall 2 antenna on the floor where the car 10 is stopped.

  For this reason, it is possible to suppress the interference between the radio wave transmitted from the hall antenna and the radio wave transmitted from the car antenna, thereby preventing the occurrence of an area where the tag cannot be detected.

  Further, the ID controller 50 as the control means includes the radio signal received by the car receiver 32 when the transmission of the radio signal from the landing antenna 21 on the floor where the car 10 is stopped is stopped. The destination floor call registration request and the hall call registration request are output to the elevator control panel 3 based on the identification information. For this reason, even if the transmission of the radio signal from the hall antenna 21 is stopped, the hall call can be registered by the tag 5 from the hall 2, and the convenience is not lowered.

  1 hoistway, 2 landing, 3 elevator control panel, 4 user, 5 tag, 10 car, 11 car door, 21 landing antenna, 22 landing receiver, 31 car antenna, 32 car receiver, 41 first transmission range, 42 Second transmission range, 50 ID controller

Claims (2)

A hall antenna that is provided at a hall of the elevator and transmits a radio signal inside a preset first transmission range;
A car antenna provided in the elevator car for transmitting a radio signal inside a preset second transmission range;
A tag that is carried by the user of the elevator and receives a radio signal from the landing antenna and the car antenna, and transmits a radio signal including identification information that can uniquely identify the user;
A hall receiver provided at the hall and capable of receiving a radio signal transmitted from the tag;
A car receiver provided in the car and capable of receiving a radio signal transmitted from the tag;
Based on the identification information included in the radio signal received by the hall receiver, the hall call registration request is output to the control panel of the elevator based on the identification information included in the radio signal, and based on the identification information included in the radio signal received by the car receiver. Control means for outputting a destination floor call registration request to the control panel,
The first transmission range is set to include the hall,
The second transmission range is set so as to include the inside of the car and include the hall of the floor where the car is stopped,
The said control means is an elevator control system which stops transmission of the radio signal from the said landing antenna of the floor where the said car has stopped.   The control means is configured to control the control based on identification information included in a radio signal received by the car receiver when transmission of a radio signal from the hall antenna of the floor where the car is stopped is stopped. The elevator control system according to claim 1, wherein a destination floor call registration request and a hall call registration request are output to the panel.

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