JP6090008B2 - Elevator control device - Google Patents

Description

  The present invention relates to an elevator control device.

  In conventional elevators, devices that always accept call registration and require signal transmission between devices, such as hall devices, are generally supplied with power even when the elevator is on standby. In the case of an elevator with a large number of stop floors such as for a high-rise building, the number of landing devices increases, so even if the power per vehicle is small, the total power is large. Therefore, in order to save power during standby when the elevator is not used, countermeasures for equipment that does not affect the operation return time (for example, stop lighting and cooling / ventilation fans, floor indicators) 2. Description of the Related Art Elevators are known in which power is saved by control such as dimming. However, a device that accepts an operation input from a user such as a landing device conveys information between devices, so that a communication circuit of a signal processing device (such as a CPU) that generates a communication signal is always in an operating state. In general, power is consumed even in a standby state.

  For example, Patent Document 1 discloses an elevator control device that can reduce wasteful power consumption during standby and can easily return to a normal mode in response to an operation of a landing button. Specifically, the elevator control device performs various types of information communication between a hall device installed on each floor, a hall device including a microcomputer to which a contact signal of the hall button is input, and the hall device. In an elevator control device including an elevator control panel including a CPU that controls supply of landing power to the landing device, and a transmission path that performs various types of information communication between the landing device and the elevator control panel, under the control of the CPU Circuit breaker that turns on / off the landing power supply, backup power supply that supplies backup voltage when the landing power supply is cut off, backup voltage is supplied to the elevator control panel when the landing button is turned on, and backup power is consumed when the landing button is turned off With a button backup circuit that prevents the occurrence of a problem and a button processing circuit that inputs a contact signal to the microcomputer when the hall power is supplied. That.

JP 2003-54846 A JP 2011-116527 A Japanese Patent No. 4854882

  However, in the configuration described in Patent Document 1, power is supplied to the microcomputer by turning on the landing button, and after the microcomputer starts up, the signal of the landing button is read by the microcomputer via the button processing circuit. Therefore, the hall call is not registered unless the hall button is pressed long or twice.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide an elevator control device capable of ensuring convenience when returning from the standby mode to the normal mode while saving power in the standby mode associated with non-use of the elevator.

An elevator control device according to the present invention includes a landing button for registering a landing call, a landing device installed at the landing and having a first control unit to which a contact point signal of the landing button is input, and a landing power supply for the landing device. An elevator control device having a second control unit that controls supply of electric power from the elevator, and having an elevator control panel that performs information communication with the hall device, and a transmission path that is used for information communication, The control unit 2 has, as operation modes, a normal mode in which power is supplied from the landing power supply and a standby mode in which power supply from the landing power supply is cut off, and is provided in the elevator control panel. Opening / closing means that closes the power line of the landing power supply in the normal mode and opens the power supply line in the standby mode based on a command from the control unit, and a landing device that accumulates and stores power in the normal mode. A storage means for supplying via the contact a backup voltage based on the power in the standby mode, provided in a portion where the signal contacts are input in the landing device, it is charged by the backup voltage, for potential holding which holds the signal of the contact comprising a storage element, and when said contact is closed during the standby mode, the backup voltage is supplied to the elevator control panel via the contacts and the transmission path, the opening and closing means is supplied with the backup voltage and closed to shift to the normal mode, and the first control unit, when a transition from the standby mode to the normal mode, activated by the supply of electric power from the landing power, held by the potential holding storage element The signal of the said contact is detected .

  According to the elevator control device of the present invention, it is possible to ensure convenience when returning from the standby mode to the normal mode while saving power in the standby mode associated with the non-use of the elevator.

It is a block diagram which shows the structure of the elevator control apparatus in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the elevator control apparatus at the time of transfering from normal mode to standby mode. It is a flowchart which shows operation | movement of the elevator control apparatus at the time of transfer (returning) from standby mode to normal mode. It is a flowchart which shows the refresh operation | movement of the capacitor | condenser for input pulse generation performed suitably during execution of standby mode. It is a block diagram which shows the structure of the elevator control apparatus in Embodiment 2 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. The overlapping explanation of the part is appropriately simplified or omitted.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of an elevator control apparatus 100 according to Embodiment 1 of the present invention. An elevator control device 100 that controls an elevator includes an elevator control panel 1 installed in a hoistway or the like, and a landing device (landing operation panel) 2 installed at an elevator landing on each floor. In addition, landing buttons (up button 3a and down button 3b) for registering hall calls are installed at the landings of each floor.

  The hall device 2 includes a hall CPU (first control unit) 4 to which signals at the contacts of hall buttons 3a and 3b installed on each floor are input. The elevator control panel 1 includes a landing power supply 5 that supplies power to each landing device 2 and a control panel CPU (second control unit) 6 that controls the supply of power from the landing power supply 5. .

  The control panel CPU 6 has a normal mode in which power is supplied from the landing power supply 5 and a standby mode in which power supply from the landing power supply 5 is cut off as elevator operation modes. In the normal mode, the control panel CPU 6 performs various types of information communication (serial communication) with the hall CPU 4 using the upstream communication transmission path 7 and the downstream communication transmission path 8. The elevator control panel 1 side is provided with a normal communication transmission / reception circuit 9a, and the hall device 2 side is provided with a normal communication transmission / reception circuit 9b.

  The elevator control panel 1 has a control panel side standby relay (opening / closing means) 13 for opening / closing (switching) a landing power source switching contact 11 for opening / closing the power line 10 of the landing power source 5 and a normal communication / standby switching contact 12. I have. Electric power is supplied to the control panel side standby relay 13 from the hall power supply 5. When the control panel side standby relay 13 is energized, the landing power source switching contact 11 is closed and the normal communication / standby switching contact 12 is connected to the normal communication transmitting / receiving circuit 9a side. When the excitation is released, the landing power supply switching contact 11 is opened, and the normal communication / standby switching contact 12 is connected to the pulse detection circuit 17 described later.

  Further, the elevator control panel 1 includes a latch circuit 14 that controls excitation and release of the control panel side standby relay 13 based on a normal mode command and a standby mode command from the control panel CPU 6. More specifically, the latch circuit 14 holds the control panel side standby relay 13 in an excited state when receiving the normal mode command via the normal mode command line 15, and the standby mode via the standby mode command line 16. When receiving a command, the control panel side standby relay 13 is configured to be held in an excitation released state.

  Further, the elevator control panel 1 includes a pulse detection circuit 17. The pulse detection circuit 17 detects a single pulse sent from the hall device 2 via the downlink communication transmission path 8 in accordance with the call registration operation of the hall button 3a or 3b during the standby mode. As the pulse detection circuit 17, for example, a photocoupler can be used. The latch circuit 14 is configured to release the excitation release state of the control panel side standby relay 13 when the pulse detection circuit 17 detects a single pulse.

  On the other hand, the landing device 2 is provided with input circuits 18a and 18b for inputting signals of the contacts of the landing buttons 3a and 3b to the landing CPU 4 for the landing buttons 3a and 3b, respectively. Also, the output signal lines 19a and 19b of the landing buttons 3a and 3b are branched in the middle, one after branching is connected to the input circuits 18a and 18b, and the other is connected to the downstream communication transmission line 8. Has been.

  The hall device 2 includes a hall-side standby relay 21 that opens and closes the input pulse transmission contacts 20a and 20b that open and close the output signal lines 19a and 19b of the hall buttons 3a and 3b. Electric power is supplied to the hall standby relay 21 from the hall power supply 5. The landing-side standby relay 21 opens the input pulse transmission contacts 20a and 20b when excited by the supply of power, and closes the input pulse transmission contacts 20a and 20b when the excitation is reversed. It has become.

  Further, the hall device 2 includes button power supply lines 22a and 22b, input pulse generating capacitors (storage means) 23a and 23b, contact input potential holding capacitors (potential holding storage elements) 24a and 24b, and a power source side. Backflow prevention diodes 26a and 26b, transmission path side backflow prevention diodes 27a and 27b, and input circuit side backflow prevention diodes 28a and 28b are provided for the landing buttons 3a and 3b, respectively.

  The button power supply lines 22a and 22b branch from the power supply line 10 and supply power from the landing power supply 5 to the landing buttons 3a and 3b, respectively. One ends of the input pulse generating capacitors 23 a and 23 b are connected to the button power supply lines 22 a and 22 b, and the other ends are connected to the ground line 25. Input pulse generating capacitors 23a and 23b receive power from the landing power supply 5 in the normal mode and store the power (as backup power). The backup voltage based on the stored power is stored in the landing button 3a, The signal is supplied to the input circuits 18a and 18b and the downstream communication transmission line 8 through the contact 3b and the output signal lines 19a and 19b.

  One ends of the contact input potential holding capacitors 24 a and 24 b are connected to the output signal lines 19 a and 19 b after branching to the input circuits 18 a and 18 b, and the other ends are connected to the ground line 25. As described above, the contact input potential holding capacitors 24 a and 24 b are provided in the landing device 2 where the signals of the contacts of the landing buttons 3 a and 3 b are input.

  The power supply side backflow prevention diodes 26a and 26b are for preventing the charge stored in the input pulse generating capacitors 23a and 23b from flowing out to the power supply line 10 during the standby mode. The transmission path side backflow prevention diodes 27a and 27b receive charges accumulated in the input pulse generating capacitors 23a and 23b toward the input circuit 18a or 18b of the other hall buttons 3a or 3b connected to the downlink communication transmission path 8. This is to prevent leakage during the standby mode. The input circuit side backflow prevention diodes 28a and 28b are for preventing current from flowing from the input circuits 18a and 18b on the output signal lines 19a and 19b after branching to the input circuits 18a and 18b.

  Next, the operation of the elevator control apparatus 100 having the above configuration will be described with reference to FIGS.

  First, the normal mode will be described. During execution of the normal mode, as described above, the control panel CPU 6 performs various information communication (serial communication) with the hall CPU 4 using the upstream communication transmission path 7 and the downstream communication transmission path 8. At this time, in order to supply electric power from the landing power source 5 to the landing device 2 via the power line 10, the landing power source switching contact 11 in the elevator control panel 1 is closed and the normal communication / The standby switching contact 12 is connected to the normal communication transmitting / receiving circuit 9a side. In the hall device 2, the input pulse generating capacitors 23 a and 23 b receive power supplied from the hall power supply 5 and accumulate power (as backup power).

  When the landing button 3a or 3b of the landing device 2 is pushed and the contact is closed, the contact input potential holding capacitor 24a or 24b is supplied along with the supply of power from the landing power supply 5 via the button power supply line 22a or 22b. Current flows through the input circuit 18a or 18b. As a result, when the input voltage of the landing CPU 4 reaches the “HIGH” level, the landing CPU 4 detects that the landing button 3a or 3b has been pressed. The detection information on the operation of the landing button 3a or 3b is transmitted from the landing CPU 4 to the control panel CPU 6 via the upstream communication transmission path upstream 7, and a landing call is registered.

  FIG. 2 is a flowchart showing the operation of the elevator control apparatus 100 when shifting from the normal mode to the standby mode. When a predetermined standby condition for shifting from the normal mode to the standby mode is satisfied during the execution of the normal mode (that is, when the control panel CPU 6 detects that the landing call has not been registered for a predetermined time), the control panel CPU 6 The standby mode command is transmitted from the controller to the latch circuit 14, and the excitation of the control panel side standby relay 13 is released (S101).

  In response to the operation of S101, the elevator control panel 1 and the hall device 2 transition to the following states (S102). In other words, the power supply to the hall device 2 on each floor is cut off by opening the hall power source switching contact 11. When the normal communication / standby switching contact 12 is switched, the downstream communication transmission path 8 is connected to the pulse detection circuit 17. On the landing device 2 side, the excitation of the landing standby relay 21 is canceled by stopping the supply of power, the input pulse transmission contacts 20a and 20b are closed, and the output signal lines 19a and 19b of the landing buttons 3a and 3b are transmitted. It is connected to the downlink communication transmission path 8 via the roadside backflow prevention diodes 27a and 27b. By such an operation, the operation mode of the elevator shifts from the normal mode to the standby mode. Also, when shifting to the standby mode, the landing CPU 4 is stopped because the power supply is cut off, but the input pulse generating capacitors 23a and 23b store the charges charged by the power supply in the normal mode. It is in the state.

  FIG. 3 is a flowchart showing the operation of the elevator control device 100 when shifting (returning) from the standby mode to the normal mode. When the landing button 3a or 3b is operated and the contact is closed during the execution of the standby mode, the contact input potential holding capacitor 24a or 24b is charged by the charge of the input pulse generating capacitor 23a or 23b and the contact input is performed. The potential of the potential holding capacitor 24a or 24b rises (S201). Accordingly, the input terminal voltage of the hall CPU 4 connected to the input circuit 18a or 18b becomes a high potential. Further, the charge of the input pulse generating capacitor 23a or 23b is supplied to the downstream communication transmission line 8 via the output signal line 19a or 19b and the transmission line side backflow prevention diode 27a or 27b, and the potential of the downstream communication transmission line 8 is increased. (S201). Along with this, the charge of the input pulse generating capacitor 23a or 23b flows into the pulse detection circuit 17 of the elevator control panel 1 as a single pulse, and an increase in potential is detected (S202). Thereby, it is detected that the landing button 3a or 3b is pressed on the landing device 2 side. When it is detected by the pulse detection circuit 17 that the landing button 3a or 3b has been pressed, the control panel side standby relay 13 is excited by the latch circuit 14 and this excitation state is maintained (S202).

  In response to the operation of S202, the elevator control panel 1 changes to the following state (S203). That is, the landing power source contact point 11 is closed and power is supplied to the landing devices 2 on each floor. When the normal communication / standby switching contact 12 is switched, the downlink communication transmission path 8 is connected to the normal communication transmitting / receiving circuit 9a.

  In response to the operation of S202, the landing device 2 side performs the following operations in accordance with the input of power from the landing power supply 5 (S204). That is, first, the landing-side standby relay 21 is excited to open the input pulse transmission contacts 20a and 20b, whereby the landing buttons 3a and 3b are released from the downlink communication transmission path 8. As a result, the serial signal for information communication between the hall CPU 4 and the control panel CPU 6 is not destroyed when the high potential pulse of the hall button 3a or 3b flows into the downstream communication transmission path 8 in the normal mode. be able to. The charges held by the contact input potential holding capacitors 24a and 24b are actively eliminated by spontaneous discharge due to a load connected in parallel or consumption by a switch connected in parallel controlled by the landing CPU 4 or the like, Provided for the next input. Further, since the transmission path side backflow prevention diodes 27a and 27b are provided, charges are absorbed by other than the pulse detection circuit 17 of the elevator control panel 1 when a plurality of landing buttons 3a and 3b are pressed simultaneously. Thus, interference can be prevented so that the amplitude and time width of the pulse do not become small.

  In S204, the landing CPU 4 is activated by the supply of electric power from the landing power supply 5 together with the excitation of the landing standby relay 21, and the landing CPU 4 detects the voltage at the input terminal held by the contact input potential holding capacitor 24a or 24b. As a call registration transmission process in the normal mode by detecting the level (high potential state), the hall call registration information (including floor and traveling direction information) is transmitted as a serial signal to the elevator control panel 1 as an upstream communication transmission line. 7 is transmitted. As a result, the place where the landing buttons 3a and 3b are operated is recognized on the elevator control panel 1 side.

  FIG. 4 is a flowchart showing the refresh operation of the input pulse generating capacitors 23a and 23b, which is appropriately executed during execution of the standby mode. The input pulse generating capacitors (power storage means) 23a and 23b during execution of the standby mode have a characteristic that the stored charge gradually decreases due to the discharge of the capacitors themselves and the generation of leakage current to the peripheral circuits. Even if the contact point of the landing button 3a or 3b is closed in a state where the storage amount is reduced, the detection of the operation of the landing button 3a or 3b in the pulse detection circuit 17 and the landing CPU 4 may fail due to insufficient backup voltage. .

  Therefore, in the present embodiment, in order to prevent this phenomenon, the refresh operation of the input pulse generating capacitors 23a and 23b shown in FIG. 4 is executed at predetermined intervals during the execution of the standby mode. In this refresh operation, the control panel CPU 6 switches from the standby mode to the normal mode for a short time by issuing a normal mode command and a standby mode command every predetermined time during execution of the standby mode, and the input pulse generating capacitor 23a. , 23b is repeated.

  More specifically, as shown in FIG. 4, in the refresh operation, when the control panel CPU 6 detects that the standby mode is continuously performed for a predetermined time, the control panel CPU 6 issues a normal mode command to the latch circuit 14. The control panel side standby relay 13 is excited (S301). As a result, the landing power source switching contact 11 is closed, the normal communication / standby switching contact 12 of the downstream communication transmission line 8 is connected to the normal communication transmitting / receiving circuit 9a side, and the standby mode is shifted to the normal mode. As a result, in the hall device 2, the power supply from the hall power supply 5 is received, and the input pulse generating capacitors 23 a and 23 b are supplementarily charged. The period for switching from the standby mode to the normal mode is the characteristics of the input pulse generation capacitors 23a and 23b to be used, the magnitude of the leakage current to the peripheral circuit, the high potential recognition level of the hall CPU 4 and the high potential recognition of the pulse detection circuit 17. It is preferable to determine according to the level. More specifically, in this supplementary charging, the capacitors 24a and 24b for holding the contact input potential and the electrostatic capacity of the downstream communication transmission path 8 are charged, and the pulse of the pulse detection circuit 17 on the elevator control panel 1 side is charged. It is necessary to maintain an amount of charge that can supply a current necessary for detection for a predetermined time or more. For this reason, it is preferable to determine the auxiliary charging period and the auxiliary charging time based on the total value of the leakage current amount of the input pulse generating capacitors 23a and 23b itself and the leakage current amount of the peripheral circuits. Further, it is preferable that the auxiliary charging time is determined according to the charging characteristics of the input pulse generating capacitors 23a and 23b to be used.

  After a predetermined time required for charging the input pulse generating capacitors 23a and 23b has elapsed after shifting to the normal mode by the process of S301, a standby mode command is transmitted from the control panel CPU 6 to the latch circuit 14, and the control panel side standby is performed. The excitation of the relay 13 is released (S302). As a result, the normal mode is shifted to the standby mode again. While the standby mode continues, the operation shown in FIG. 4 is repeatedly executed.

  As described above, the elevator control device 100 includes the input pulse generating capacitors 23a and 23b that can supply the backup voltage based on the electric power accumulated in the normal mode via the contacts of the landing buttons 3a and 3b in the standby mode, The hall device 2 includes contact input potential holding capacitors 24a and 24b that are charged by the supply of the backup voltage as the contacts of the buttons 3a and 3b are closed and the potential is increased. According to the elevator control device 100, when the contact of the landing button 3a or 3b is closed during the standby mode, the backup voltage passes through the contact, the output signal line 19a or 19b, and the downlink communication transmission path 8. Then, it is supplied to the elevator control panel 1. Along with this, the control panel side standby relay 13 operates so as to close the landing power supply switching contact 11, power is supplied to the landing devices 2 on each floor, and the mode is shifted to the normal mode. Thus, when the landing button 3a or 3b is operated during the standby mode, the contact input potential holding capacitor 24a using the backup voltage of the input pulse generating capacitors 23a and 23b charged in the normal mode, By increasing the potential of 24b, the contact input potential of the landing button 3a or 3b output to the landing CPU 4 can be held. As a result, it is possible to register a hall call with an operational feeling equivalent to a normal push operation without pressing the hall buttons 3a and 3b for a long time or twice, and resumption of power supply from the hall power source 5 Is possible. For this reason, according to the elevator control device 100 according to the present embodiment, it is possible to reduce the standby power of the landing device 2 to zero (excluding power for auxiliary charging) by shutting off the landing power supply 5 in the standby mode. In addition, in response to the operation of the landing button 3a or 3b during the standby mode, the supply of the landing power supply 5 can be promptly resumed to shift to the normal mode.

  In addition, the elevator control device 100 has a configuration in which the input operation information of the hall device 2 by the hall button 3a or 3b in the standby mode is transmitted to the elevator control panel 1 as a single pulse, so that a complicated format is used by the CPU or the like. Thus, no means for generating a signal is required. As a result, a small amount of electric power (charge) can be stored during the standby mode, and there is no need to install dedicated wiring for detection. Moreover, it is not necessary to provide an electricity storage device that is large and expensive, has a large mounting space, and requires periodic replacement, such as a Ni-MH battery or an electric double layer capacitor, such as a small capacitor (23a, 23b, 24a, 24b). A small-capacity storage element is sufficient, and it is not necessary to provide a power generation device such as solar power generation.

  As described above, according to the elevator control device 100 according to the present embodiment, when it is detected that the elevator is not used for a predetermined time in the “normal mode” in which the elevator is in the normal operation state, the landing power supply 5 Is switched to the “standby mode”, and when the hall button 3a or 3b is operated, the hall power supply 5 is quickly turned on to return to the “normal mode” of the normal communication operation state without requiring a long press or the like. As a result, a function for reducing standby power without impairing convenience can be provided at a low cost.

  Further, according to the elevator control apparatus 100 according to the present embodiment, during the execution of the standby mode, the refresh operation of the input pulse generating capacitors 23a and 23b is executed by temporarily shifting to the normal mode every predetermined time. Is done. Thus, by providing the function of performing the auxiliary charging of the input pulse generating capacitors 23a and 23b every predetermined time, the input pulse generating capacitors 23a and 23b can be discharged during the standby mode. It is possible to prevent occurrence of input pulse generation due to insufficient charge after waiting for a long time due to the leakage of charge due to leakage current, resulting in detection error of signals at the contacts of the landing buttons 3a and 3b.

  By the way, in the first embodiment described above, the contacts 11 and 12 are opened and closed (switched) by the mechanical control panel side standby relay 13 and the landing side standby relay 21 for switching between the normal mode and the standby mode. , 20a and 20b are described as an example, but a semiconductor switch may be used instead of such a mechanical relay.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to FIG.

  FIG. 5 is a block diagram showing a configuration of an elevator control device 200 according to Embodiment 2 of the present invention. The elevator control device 200 of the present embodiment replaces the normal mode command line 15 and the standby mode command line 16 connected to the control panel CPU 6 in the elevator control panel 1 for switching between the normal mode and the standby mode. A communication transmission line monitoring CPU (third control unit) 29, an upstream communication transmission line monitoring line 30, a downstream communication transmission line monitoring line 31, a normal mode command line 32, and a standby mode command line 33 are provided. This is different from the elevator control device 100 of the first embodiment.

  One end of the upstream communication transmission line monitoring line 30 is connected to the upstream communication transmission line 7, and the other end is connected to the communication transmission line monitoring CPU 29. One end of the downlink communication transmission line monitoring line 31 is connected to the downlink communication transmission line 8, and the other end is connected to the communication transmission line monitoring CPU 29. The communication transmission line monitoring CPU 29 is configured separately from the control panel CPU 6, and monitors signals using the upstream communication transmission line monitoring line 30 and the downstream communication transmission line monitoring line 31. The communication transmission line monitoring CPU 29 transmits a normal mode command to the latch circuit 14 via the normal mode command line 32 and transmits a standby mode command via the standby mode command line 33.

  When the registration signal of the hall call from the hall device 2 is not detected for a predetermined time, the communication transmission line monitoring CPU 29 sends a standby mode command to the latch circuit 14, and as a result, the operation mode of the elevator is changed from the normal mode to the standby mode. Transition. Further, in order to supplement the input pulse generating capacitors 23a and 23b by the refresh operation, the timer mode provided in the communication transmission line monitoring CPU 29 is used to switch to the normal mode for a short time every predetermined time. For such switching, the communication transmission line monitoring CPU 29 has a function of transmitting a normal mode command.

  The elevator control device 200 including the communication transmission path monitoring CPU 29 that monitors the communication transmission paths 7 and 8 described above can achieve the same effects as the elevator control apparatus 100 of the first embodiment described above. The configuration of the present embodiment is a configuration that can be easily retrofitted to an existing elevator of a conventional system.

  DESCRIPTION OF SYMBOLS 1 Elevator control board, 2 hall device, 3a hall button (up button), 3b hall button (down button), 4 hall CPU, 5 hall power supply, 6 control board CPU, 7 upstream communication transmission path, 8 downstream communication transmission path, 9a, 9b Transmission / reception circuit for normal communication, 10 power line, 11 contact for switching on / off of landing power source, 12 contact for normal communication / standby switching, 13 standby relay on control panel, 14 latch circuit, 15, 32 normal mode command line, 16, 33 standby mode command line, 17 pulse detection circuit, 18a, 18b input circuit, 19a, 19b output signal line, 20a, 20b input pulse transmission contact, 21 landing standby relay, 22a, 22b button power supply line, 23a, 23b Capacitors for generating input pulses, 24a, 24b Capacitors for maintaining contact input potential, 25 Ground line, 26a, 26b Power supply side backflow prevention diode, 27a, 27b Transmission path side backflow prevention diode, 28a, 28b Input circuit side backflow prevention diode, 29 Communication transmission line monitoring CPU, 30 Uplink transmission transmission line monitoring line, 31 Downlink communication transmission Road monitoring line, 100, 200 Elevator control device

Claims (3)

A hall button for registering hall calls;
A landing device installed at a landing and having a first control unit to which a contact point signal of the landing button is input;
An elevator control panel having a second control unit for controlling power supply from a landing power supply to the landing device, and performing information communication with the landing device;
In an elevator control device comprising a transmission path used for the information communication,
The second control unit has, as operation modes, a normal mode for supplying power from the hall power supply and a standby mode for cutting off power supply from the hall power supply,
Opening / closing means provided in the elevator control panel, for closing the power line of the hall power source in the normal mode based on a command from the second control unit, and opening the power line in the standby mode;
Power storage means provided in the landing device, storing power during the normal mode, and supplying a backup voltage based on the stored power via the contacts during the standby mode;
A potential holding power storage element that is provided at a portion where the signal of the contact is input in the hall device, is charged by the backup voltage, and holds the signal of the contact ;
When the contact is closed during the standby mode, the backup voltage is supplied to the elevator control panel via the contact and the transmission path, and the switching means is closed by receiving the supply of the backup voltage. and proceeds to the normal mode, and,
When the first control unit shifts from the standby mode to the normal mode, the first control unit is activated by the supply of power from the landing power supply and detects the signal of the contact held by the potential holding power storage element Elevator control device.   The elevator control device according to claim 1, wherein the elevator control panel temporarily shifts to the normal mode every predetermined time during the standby mode. The elevator control panel includes a latch circuit that holds the opening / closing means in an open state,
The elevator control panel includes a third control unit that monitors the presence or absence of a registration signal for a hall call using information communication with the first control unit, separately from the second control unit,
3. The elevator control device according to claim 1, wherein the third control unit transmits a standby command signal to the latch circuit when detecting that there is no registration of a hall call for a predetermined time during the normal mode.

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