JP2006206245A - Signal transmitting method for elevator device and elevator device using the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a signal transmitting method for an elevator device to transmit signals concerning the safety of elevator and signals concerning the control of the elevator. <P>SOLUTION: Conditional signals concerning the safety of the elevator are emitted at certain intervals from a safety sensor terminal fed with the conditional signals concerning the safety of the elevator sensed by a signal sensing means, and from a control sensor terminal fed with the conditional signals concerning the control of the elevator sensed by another signal sensing means, the conditional signals concerning the control of the elevator are emitted at the specified intervals different from the intervals of the first named conditional signals for safety, and these two sorts of conditional signals are transmitted as serial data via a common communication path. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a signal transmission method of an elevator apparatus that operates an elevator by transmitting a signal related to elevator safety and a signal related to control of the elevator through a communication path, and an elevator apparatus using the method.

A safety system used in an elevator apparatus includes a series circuit of a plurality of signal detection means such as sensors, switches, or contacts, and if any one of these signal detection means is not closed, the elevator is in a dangerous state. In the past, a mechanical device called a safety chain has been used. This safety system is a mechanical device, and there is no concern that it will become inoperable due to a power failure.

However, recently, with the provision of fail-safe technology in the event of a power failure due to advances in electronic technology, signal detection means such as sensors, switches, or contacts for detecting the safety state of elevators are connected by a bus node. An electronic safety system has been proposed in which a controller that controls the operation of an elevator is connected by a communication path, and the elevator is stopped in a safe manner when the controller senses a dangerous state of the elevator by a detection signal from the signal detection means. (For example, refer to Patent Document 1).

JP-T-2002-538061 (Background Art and paragraphs 0013 to 0017) (FIG. 1)

An electronic safety system that connects a signal detection means such as a sensor, a switch, or a contact for detecting the safety state of an elevator and a controller disclosed in Patent Document 1 and a controller via a communication path is a signal related to the safety of the elevator. For example, for the control of elevators, such as signals indicating the car's position in the terminal floor (top or bottom floor) of the building where the elevator is installed and the landing range of the destination floor No consideration is given to the transmission of the signals involved and is not disclosed.

For this reason, in order to transmit the signal regarding the control detected by signal detection means, such as a sensor, a switch, or a contactor, to the controller, it is necessary to provide another communication path different from the communication path in the safety system. There were two communication channels. Therefore, there is a problem that wiring between devices such as an elevator safety device or a control device is complicated and expensive.

  The present invention has been made in view of the above problems, and a signal transmission method for an elevator apparatus that transmits a signal related to elevator safety and a signal related to elevator control through a common communication path, and an elevator apparatus using the method. Is to provide.

  The elevator apparatus signal transmission method according to the present invention outputs the state signal related to the safety of the elevator at a predetermined cycle from the safety sensor terminal to which the state signal related to the safety of the elevator detected by the signal detection means is input. A state signal output from the safety sensor terminal from a control sensor terminal to which a state signal related to elevator control detected by a signal detection means different from the signal detection means is input; Elevator status signals output at different predetermined cycles and transmitted from the two sensor terminals are transmitted as serial data through a common communication path.

  Further, the signal transmission method of the elevator apparatus according to another invention includes a state signal related to the safety of the elevator detected by the signal detection means and a state related to the control of the elevator detected by the signal detection means different from the signal detection means. A state signal related to the safety of the elevator is output at a predetermined cycle from a sensor terminal to which the signal is input, and a state signal related to the control of the elevator is output at a predetermined cycle different from the state signal related to the safety of the elevator The state signal related to the safety of the elevator and the state signal related to the control of the elevator are transmitted as serial data through a common communication path.

The elevator apparatus according to the present invention also includes a safety sensor terminal that receives an elevator safety status signal from the signal detection means and outputs the input status signal in a predetermined cycle, and a signal different from the signal detection means. A state signal related to elevator control is input from the detection means, the control sensor terminal that outputs the input state signal at a predetermined cycle different from the safety sensor terminal, the state signal output from the safety sensor terminal, and the above A communication path for transmitting the status signal output from the control sensor terminal as serial data, and the status signal output from the safety sensor terminal via the communication path is processed, and when the dangerous state of the elevator is detected, the elevator Output a stop signal and process a status signal output from the control sensor terminal. A controller for outputting a cage position stop signals are those with a.

An elevator apparatus according to another invention receives an elevator safety status signal detected by the signal detection means and an elevator control status signal detected by a signal detection means different from the signal detection means. The state signal related to the safety of the input elevator is output at a predetermined cycle, and the state signal related to the control of the input elevator is output at a predetermined cycle different from the state signal related to the safety of the elevator. A sensor terminal, a communication path that transmits the status signal related to the safety of the elevator output from the sensor terminal, and a status signal related to the control of the elevator output from the sensor terminal, as serial data, and the communication path It processes the elevator safety status signal output from the sensor terminal, and A controller that outputs an elevator stop signal upon detection of a state, processes a state signal related to elevator control output from the sensor terminal, and outputs an elevator car position stop signal; .

  According to this invention, the signal related to the safety of the elevator and the signal related to the control of the elevator are transmitted as serial data through the common communication path, and the elevator is operated based on this data, so the length of the communication path is shortened. In addition to minimizing the influence of voltage loss and lowering the control voltage, there is an effect that the wiring between devices such as an elevator safety device or a control device can be configured simply and inexpensively.

  Exemplary embodiments of a signal transmission method for an elevator apparatus and an elevator apparatus using the method according to the present invention will be described below with reference to the accompanying drawings.

Embodiment 1 FIG.
FIG. 1 and FIG. 2 are diagrams for explaining Embodiment 1 of the present invention. FIG. 1 is an overall configuration diagram of an elevator apparatus. FIG. 2 is a communication on a communication path of signals related to elevator safety and signals related to elevator control. It shows a schematic configuration diagram of data.

In FIG. 1, an elevator apparatus 100 is connected to a controller 10, a machine room 20, a hoistway 30, a car 40, an elevator controller 60 connected to the controller 10 via an interface 50, and also connected to the controller 10 via an interface 70. And a communication path 90 that controls signal transmission between the controller 10, the machine room 20, the hoistway 30, and the car 40.

As will be described later, the controller 10 receives a plurality of safety sensor terminals 21, 31A, 31B, 31C, 41, 42 for inputting state signals related to elevator safety (hereinafter referred to as elevator safety signals), and the elevators. It communicates via a communication path 90 with each of a plurality of control sensor terminals 35, 36, 47 that input state signals related to control (hereinafter referred to as elevator control signals).
The controller 10 includes a microprocessor system 11, and the controller 10 receives signals from each of a plurality of safety sensor terminals 21, 31A, 31B, 31C, 41, 42 for inputting elevator safety signals. Signals from each of the plurality of control sensor terminals 35, 36, and 47 that input elevator control signals are input as serial data via the communication path 90, as will be described later. The controller 10 continuously processes input data, and controls the elevator by giving an output signal to the elevator control device 60 or the driving / braking device 80 in a specific state. The communication path 90 is realized by using a unique communication protocol or using a standard communication protocol called a controller area network (CAN), for example.

  Next, a safety sensor terminal for inputting an elevator safety signal from a signal detection means (hereinafter referred to as a safety signal detection means) comprising a sensor, a switch, or a contact for detecting an elevator safety signal, and a control signal A control sensor terminal for inputting an elevator control signal from signal detection means (hereinafter referred to as control signal detection means) comprising a sensor, a switch, a contact or the like for detecting the above will be described.

First, the hoistway 30 will be described. The safety sensor terminals 31A, 31B, and 31C input elevator safety signals detected by the safety signal detection means, and output the input safety signals at a predetermined transmission cycle as will be described later. Is done.
In other words, the safety sensor terminals 31A, 31B, and 31C are connected to the lock switches 33A, 33B, and 33C that detect the open / closed states of the landing doors 32A, 32B, and 32C of the corresponding floors in the hoistway 30, respectively. The safety sensor terminal 31A is also connected to a pit switch 34 that is installed in the lower part of the hoistway 30 and used by a worker.

The safety sensor terminals 31A, 31B, and 31C give the controller 10 status signals of the lock switches 33A, 33B, and 33C provided to the landing doors 32A, 32B, and 32C via the communication path 90. If the controller 10 determines that a dangerous state exists in the elevator, the controller 10 transmits a stop signal to the driving / braking device 80 via the interface 70 so as to stop the elevator safely. The status signals of the lock switches 33A, 33B, and 33C are also given from the controller 10 to the elevator control device 60 via the interface 50.

The status signal of the pit switch 34 is also given from the safety sensor terminal 31A to the controller 10 via the communication path 90. When detecting that the pit switch 34 is activated, the controller 10 gives a stop signal to the driving / braking device 80 so as to immediately control and stop the car 40. The controller 10 also gives a status signal to the elevator controller 60 to update it.

On the other hand, the control sensor terminals 35 and 36 receive elevator control signals detected by the control signal detection means, and the safety signals output from the safety sensor terminals 31A, 31B, and 31C as will be described later. The control sensor terminal 35 is connected to an upper terminal position detection sensor 37 that is provided at the uppermost part of the hoistway 30 and detects the car position at the uppermost part of the hoistway. . Further, the control sensor terminal 35 gives a status signal of the upper end position detection sensor 37 to the controller 10 via the communication path 90. When it is detected that the car 40 has reached the vicinity of the top floor and the upper end position detection sensor 37 has been activated during traveling, the status signal is given from the controller 10 to the elevator control device 60 via the interface 50, and the car 40 has gone too far. Speed control is performed so that there is no.

The control sensor terminal 36 is connected to a lower terminal position detection sensor 38 that is provided at the lowermost part of the hoistway 30 and detects a car position at the lowermost part of the hoistway. Further, the control sensor terminal 36 gives a status signal of the lower end position detection sensor 38 to the controller 10 via the communication path 90. When it is detected that the car 40 has reached the lowermost part and the lower end position detection sensor 38 is activated during traveling, the status signal is given from the controller 10 to the elevator controller 60 via the interface 50, and the car 40 is overrun. Speed control is performed so that there is no.

The upper end position detection sensor 37 and the lower end position detection sensor 38 are provided for controlling the speed of the elevator at the end floor and stopping the car 40 with high accuracy.

  Next, the machine room 20 will be described. The safety sensor terminal 21 inputs a signal detected by the safety signal detection means. That is, the safety sensor terminal 21 is connected to an overspeed switch 22 provided in the machine room 20 for detecting an actual overspeed of the car 40. The safety sensor terminal 21 gives a state signal of the overspeed switch 22 to the controller 10 through the communication path 90 at a predetermined cycle as will be described later. When the overspeed state is detected by the overspeed switch 22, the controller 10 transmits a stop signal to the drive / brake device 80 via the interface 70 so that the car 40 is safely stopped. It should be noted that a state signal of the overspeed switch 22 indicating that an overspeed state has occurred is also given from the controller 10 to the elevator control device 60 via the interface 50.

  Further, the car 40 will be described. The safety sensor terminals 41 and 42 receive signals detected by the safety signal detection means, and an inspection switch 43 and an emergency stop switch 44 are connected to the safety sensor terminal 41. The safety sensor terminal 41 gives status signals of the inspection switch 43 and the emergency stop switch 44 to the controller 10 via the communication path 90. When the operation of the emergency stop switch 44 is detected, emergency processing is started, and when the operation of the inspection switch 43 is detected, inspection mode processing is started.

The safety sensor terminal 42 is connected to a car door switch 46 that detects the open / closed state of the car door 45. The safety sensor terminal 42 gives a status signal of the car door switch 46 from the car door 45 to the controller 10 via the communication path 90. If the controller 10 determines that a dangerous state exists in the elevator, the controller 10 transmits a stop signal to the driving / braking device 80 via the interface 70 so as to stop the elevator safely. A state signal indicating a dangerous state of the elevator is also given from the controller 10 to the elevator control device 60 via the interface 50.

On the other hand, the control sensor terminal 47 is connected to a landing position detection sensor 48 that is provided in the car 40 and detects the landing range of the car on each floor. The control sensor terminal 47 gives a status signal of the landing position detection sensor 48 to the controller 10 via the communication path 90. When it is detected that the car 40 has reached the vicinity of the stop floor and the landing position detection sensor 48 has been activated while the elevator is running, the status signal is given from the controller 10 to the elevator controller 60 via the interface 50, Speed control is performed so that 40 stops at the stop floor with high accuracy. The landing position detection sensor 48 is provided for controlling the speed of the elevator on the destination floor and landing the car 40 with high accuracy. The cycle of the safety signal output from the safety sensor terminals 41 and 42 to the controller 10 is a predetermined cycle, and the cycle of the control signal output from the control sensor terminal 47 to the controller 10 is The period is longer than the period of the safety signal output from the controller 42 to the controller 10, and details will be described later.

Next, the procedure of communication processing between each of the safety sensor terminals 21, 31A to 31C, 41, 42 and the controller 10 to which the elevator safety signal is input, and the respective control sensor terminals 35 and 36 to which the elevator control signal is input. , 47 and the controller 10 will be described.
FIG. 2 shows communication data between the safety sensor terminals 21, 31A to 31C, 41, 42 and the controller 10 for inputting the elevator safety signal, and the control sensor terminals 35, 36, 47 and the controller 10 for inputting the elevator control signal. It shows a schematic configuration of communication data between the two.

The status signals of the lock switches 33A to 33C, the pit switch 34, the inspection switch 43, and the emergency stop switch 44 of the landing doors 32A to 32C, which are elevator safety signals, are assigned to the areas of safety signal data 1 to safety signal data N. And is transmitted every predetermined period. The safety signal data 1 to safety signal data N are output from the safety sensor terminals 21, 31 </ b> A to 31 </ b> C, 41, 42 to the controller 10 as status signals from the respective safety signal detection means at a timing corresponding to the data. Is done.

On the other hand, the state signals of the upper end position detection sensor 37, the lower end position detection sensor 38, and the landing position detection sensor 48, which are elevator control signals, are assigned to the control signal data area. The state signal of the upper end position detection sensor 37 is transmitted in the second period, the state signal of the lower end position detection sensor 38 is transmitted in the second period, and the state signal of the landing position detection sensor 48 is transmitted in the third period. The control signal data is output from the control sensor terminal to the controller 10 as a status signal from the control signal detection means at a timing corresponding to a predetermined cycle at the timing of the data. The transmission of the elevator control signal is completed in a series of transmissions in three cycles, but at a transmission rate that completes the transmission in a period (eg, 100 msec) that is not problematic for the control of the elevator. There is no problem if it is transmitted.

  That is, as shown in FIG. 2, the elevator safety signal and the elevator control signal are transmitted through a common communication path 90 as serial data, and the elevator safety signal is transmitted in a shorter cycle than the elevator control signal. The elevator safety signal is preferentially communicated so that the elevator can be safely stopped even when a dangerous state occurs in the elevator. The communication protocol may be realized using any communication protocol as long as the safety signal of the elevator can be preferentially communicated over the control signal of the elevator.

  According to Embodiment 1 of the present invention, the elevator safety signal and the elevator control signal are transmitted as serial data through a common communication path, and the elevator is operated based on this data. In addition to minimizing the effects of voltage loss and lowering the control voltage, wiring between devices such as devices related to elevator safety or devices related to control can be configured simply and inexpensively.

Embodiment 2. FIG.
FIG. 3 is an overall configuration diagram of an elevator apparatus illustrating Embodiment 2 of the present invention. The components having the same reference numerals as those in FIG.

1 is different from FIG. 1 in that a sensor terminal is not provided for each signal detection means including sensors, switches, contacts, or the like, but is divided into a plurality of groups around the place where the signal detection means is arranged. The sensor terminal is provided every time.

That is, in the hoistway 30, the status signals of the lock switches 33A, 33B, 33C and the pit switch 34 of the landing doors 32A, 32B, 32C, the status signal of the upper end position detection sensor 37, and the lower end position detection sensor 38 are displayed. The car terminal 40 is provided with the status signal of the inspection switch 43, the status signal of the emergency stop switch 44, and the status signal of the car door switch 46 of the car door 45. The elevator apparatus 101 is configured by providing the sensor terminal 301.

  In addition, as an embodiment other than the above-described configuration, it is further divided into a plurality of groups centering on the place where the signal detection means is arranged, and the hoistway 30 has lock switches 33A, 33B, 33C and a sensor terminal that inputs a status signal of the pit switch 34, a sensor terminal that inputs a status signal of the upper terminal position detection sensor 37, and a sensor terminal that inputs a status signal of the lower terminal position detection sensor 38 It may be.

  According to the second embodiment, since the sensor terminal is provided in units of groups centering on the place where the signal detection means such as the hoistway 30, the machine room 20, and the car 40 is arranged, in addition to the effects of the first embodiment, There is an effect that the sensor terminals can be integrated and configured at low cost.

Embodiment 3 FIG.
FIG. 4 is an overall configuration diagram of an elevator apparatus for explaining Embodiment 3 of the present invention. Components having the same reference numerals as those in FIGS.

1 and 3 is divided into a plurality of groups centering on a place where signal detecting means including sensors, switches, contacts, etc. is arranged, and an elevator safety signal is input in each group. A safety sensor terminal and a control sensor terminal for inputting an elevator control signal are separately provided.

That is, in the hoistway 30, a safety sensor terminal 400 for inputting status signals of the lock switches 33A, 33B, 33C and the pit switch 34 of the landing doors 32A, 32B, 32C as an elevator safety signal, and an elevator control signal The control sensor terminal 401 for inputting the state signal of the upper end position detection sensor 37 and the state signal of the lower end position detection sensor 38 is provided.
In addition, the car 40 has a safety sensor terminal 402 for inputting a status signal of the inspection switch 43, a status signal of the emergency stop switch 44, and a status signal of the car door switch 46 of the car door 45 as elevator safety signals, and an elevator. The elevator apparatus 102 is configured by providing a control sensor terminal 403 that inputs a status signal of the landing position detection sensor 48 as a control signal.

  According to the third embodiment, the safety sensor terminal for inputting the safety signal of the elevator in units of groups around the place where the signal detection means such as the hoistway 30, the machine room 20, and the car 40 is arranged, and the control of the elevator Since the control sensor terminals for inputting signals are individually provided, in addition to the effects of the first embodiment, the safety sensor terminal for inputting the safety signals of the elevator has an influence even when the input processing of the elevator control signals is disturbed. Therefore, there is an effect that it is possible to achieve both high reliability and high safety for the aggregation of sensor terminals and the communication of elevator safety signals.

  As described above, an elevator apparatus signal transmission method and an elevator apparatus using the method according to the present invention transmit signals related to elevator safety and signals related to elevator control as serial data through a common communication path. Therefore, the industrial applicability is great.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole elevator apparatus block diagram explaining Embodiment 1 of this invention. It is a schematic block diagram of the communication data in the communication channel of the signal related to the safety of the elevator and the signal related to control of the elevator. It is a whole block diagram of the elevator apparatus explaining Embodiment 2 of this invention. It is a whole block diagram of the elevator apparatus explaining Embodiment 3 of this invention.

Explanation of symbols

10 controller 11 microprocessor system 20 machine room 21, 31A to 31C, 35, 36, 41, 42, 47, 300, 301, 400, 401, 402, 403 sensor terminal 22 overspeed switch 30 hoistway 32A to 32C, 45 Stop doors 33A to 33C, 46 Lock switch 34 Pit switch 37 Upper end position sensor 38 Lower end position sensor 40 Car 43 Inspection switch 44 Emergency stop switch 50, 70 Interface 60 Elevator control device 80 Drive / braking device 90 Communication path 100, 101 , 102 Elevator equipment

Claims (7)

  A state signal related to the safety of the elevator detected by the signal detection means is output at a predetermined cycle from the safety sensor terminal to which the state signal related to the safety of the elevator is input, and detected by a signal detection means different from the signal detection means. From the control sensor terminal to which the status signal related to the control of the elevator is input, the status signal related to the control of the elevator is output at a predetermined cycle different from the status signal output from the safety sensor terminal, and the both sensor terminals A signal transmission method for an elevator apparatus, wherein the elevator status signal output from the vehicle is transmitted as serial data through a common communication path.   From the sensor terminal to which the status signal related to the safety of the elevator detected by the signal detection means and the status signal related to the control of the elevator detected by the signal detection means different from the signal detection means are input, the safety of the elevator A state signal related to the elevator control is output at a predetermined period different from a state signal related to the safety of the elevator, and the state signal related to the safety of the elevator and the control of the elevator A signal transmission method for an elevator apparatus, characterized in that a status signal related to the vehicle is transmitted as serial data through a common communication path.   The signal transmission method for an elevator apparatus according to claim 1 or 2, wherein a cycle of the state signal related to safety of the elevator is shorter than a cycle of the state signal related to control of the elevator. A state signal related to the safety of the elevator is input from the signal detection means, and a safety sensor terminal that outputs the input state signal in a predetermined cycle;
A control sensor terminal that receives a status signal related to elevator control from a signal detection means different from the signal detection means, and outputs the input status signal at a predetermined cycle different from that of the safety sensor terminal;
A communication path for transmitting the status signal output from the safety sensor terminal and the status signal output from the control sensor terminal as serial data;
Processes the status signal output from the safety sensor terminal via the communication path, outputs the stop signal of the elevator when the dangerous state of the elevator is detected, and processes the status signal output from the control sensor terminal And a controller for outputting the elevator car position stop signal,
An elevator apparatus comprising:   A plurality of signal detection means for detecting a status signal related to the safety of the elevator and a plurality of signal detection means for detecting a status signal related to the control of the elevator, and a signal detection means for detecting a status signal related to the safety of the elevator; The place where each of the signal detection means for detecting the status signal related to the control of the elevator is divided into a plurality of groups, and the status signal related to the safety of the elevator arranged for each of the divided groups is detected. All of the signal detection means are connected to the same safety sensor terminal, and all of the signal detection means for detecting the status signals related to the control of the elevators arranged for each of the divided groups are connected to the same control sensor terminal. The elevator apparatus according to claim 4. The state signal related to the safety of the elevator detected by the signal detection means and the state signal related to the control of the elevator detected by the signal detection means different from the signal detection means are input, and the safety signal of the input elevator is related. A sensor terminal that outputs a state signal at a predetermined cycle and outputs a state signal related to the control of the input elevator at a predetermined cycle different from the state signal related to the safety of the elevator;
A communication path for transmitting, as serial data, a status signal related to the safety of the elevator output from the sensor terminal and a status signal related to the control of the elevator output from the sensor terminal;
A state signal related to the safety of the elevator output from the sensor terminal via the communication path is processed, and when the dangerous state of the elevator is detected, a stop signal of the elevator is output, and the elevator signal output from the sensor terminal is output. A controller that processes state signals related to control and outputs a car position stop signal for the elevator;
An elevator apparatus comprising:   The elevator apparatus according to any one of claims 4 to 6, wherein a period of the state signal related to safety of the elevator is shorter than a period of the state signal related to control of the elevator.

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