MXPA97007604A - Supervision of elevadorman door systems - Google Patents

Abstract

The present invention relates to a method for monitoring a manual elevator door system comprising the steps of: providing a plurality of sensor signals, detecting the sensor signals, determining in response to detection of the sensor signals that a Elevator truck is stopped at a halt determined in response to detecting sensor signals that a lift truck door is open, determine in response to detecting sensor signals that an elevator door is latched, determine in response to the detection of the sensor signals that an elevator box door is closed, determining in response to detection of the sensor signals that a call has been assigned to the elevator car during a time when the elevator car door is closed; and providing an operating data signal in response to the determinations, wherein the operating data signal s representative that the manual elevator door system is in a non-alarm condition

Description

Supervision of Manual Elevator Door Systems Technical Field The present invention relates to elevator door monitoring and, more particularly, supervision of manual elevator door systems.

BACKGROUND OF THE INVENTION Elevator door systems operating a plurality of remote sites can be monitored using sensors at remote sites and transmitting information about the present status of a number of parameters during the operation of the subjects on the sites. In conventional elevator door monitoring systems, the parameters are analyzed by a signal transducer in order to determine whether any parameters have changed state. If so, the present value of the changed parameter is plugged into a Boolean expression that d finishes an alarm condition in order to determine if the Boolean expression is satisfied and, therefore, the alarm condition is present. If this is the case, an alarm condition is transmitted and displayed as an alarm message. However, conventional elevator door monitoring systems focus on the supervision of automatic elevator doors that require little or no passenger interaction. In contrast, manual lift door systems often require passenger interaction and the amount of this interaction varies according to the complexity of the manual elevator door system. The passage interaction can introduce, in conventional monitoring systems, a mere number of false alarm states that reduce the reliability of alarm data.

Disclosure of the Invention An object of the present invention is to provide an improved apparatus and method for monitoring a manual elevator door system. A further object of the present invention is to provide an apparatus and method that maximizes the reliability of the alarm data when monitoring a manual elevator door system. Another object of the present invention is to provide apparatus and method for differentiating between passenger interaction a failure condition in a manual lift door system.

In accordance with the present invention, a method for monitoring a manual elevator door system that comprises the steps of: providing a plurality of sensor signals; detect sensor signals; determining in response the detection of sensor signals that an elevator car is stopped at a halt; determine in response to the detection of the sensor signals that an elevator car is with the door open; determining in response to the detection of the sensor ports that is not holding an ascending box door; determining in response to detection of sens signals that an elevator box door is closed; determining in response to detection of the sensor signals that a call has been made to the elevator car for a time that the elevator door is closed; and providing an operating data signal in response to the determinations where the operating data signal is representative d that the manual elevator door system is in a non-alarm or non-alarm condition. In accordance with the present invention, an apparatus for monitoring a manual elevator door system comprises a plurality of sensors for providing sensor signals and a processor for processing the plurality of sensor signals. The processor provides an operating data signal s an elevator car is stopped at a halt, a lift truck door is open, a liftgate door is closed and unlatched, and a call for an elevator car has been registered while the liftgate door is open. elevator is closed. The parking signal is representative of the fact that the manual elevator door system is in a non-alarm condition. In further accordance with the present invention, a method for monitoring a manual elevator door system comprising the steps of: providing a plurality of sensors; detect sensor signals; determine in response to detection of sensor signals that an elevator car is stopped at a halt; determining in response the detection of the sensor signals that a lift elevator box door is closed; determining at start up detection of the sensor signals that a call assigns to the elevator car; and determining that a gate has not closed in response to the call within a predetermined time; and provide an alarm data signal response of said determinations. In additional accordance with the present invention, monitoring apparatus of a manual elevator door system comprises: a plurality of sensors for providing sensor signal and a processor for processing the plurality of sensor signal. The processor provides a wing data signal if an elevator car is stopped at a halt, an elevator car door is housed in the elevator car, a call has been assigned for the elevator car, and a car door is assigned. has not closed in response to the call within a predetermined time Brief Description of the Drawings Figure 1 is an illustration of an elevator superstructure system; and Figures 2, 3 and 4 are illustrations of a state machine model for a manual elevator door system, in accordance with the present invention, which normally operates from state to state in a sequential closed loop state chain. of normal operations.

BEST MODE FOR CARRYING OUT THE INVENTION Figure 1 illustrates a remote elector monitoring system 10 for monitoring individual elevators in remotely located buildings 12, to transmit alarm and operation data to associated local monitoring centers 14. The method of communication between remote buildings and the various local systems is a bidirectional communication system by which inoperative elevators are identified and the individual elevator door operating information is transferred to a local supervisory center through of the use of local telephone lines that may include radiofrequency transmission trajectories. It should be understood that while the remote elevator monitoring system described herein utilizes the public switch telephone network available within the local community in which a particular local supervisory center and its remote buildings are located associated with- two, other equivalent forms of communication can be used. For example, other communication systems such as an Internet or Intranet communication system can be used with the present invention. Each remote building of the remote element monitoring system includes a main 18 and one or more subordinates 2 The individual subordinates 20 are directly attached to sockets associated with an associated elevator and elevator door. The subordinates 20 transmit signals indicative of the status of selected parameters through a communication line 22 comprising a pair of wires. The use of a two-wire communication line between the main 18 and its associated subordinate 20 provides both an economic means of transmitting data and the ability to economically dispose the principal in a remote location of the subordinates. For example, if all the subordinates are placed in a set of elevator machines that have a hostile environment in an elevator shaft, the main one can be placed economically in a more benign environment in the building. Even though the architecture of the remote elevator monitoring system within a remote building has been described as having a principal that communicates with one or more subordinates using an efficient two-wire communication line, it must be understood by the one- Experienced messes in the field can also be used other means of communication and data transmission including less efficient me. It should also be understood that due to the number of subordinates capable of being fixed to a given communication line is finite, it may be necessary within a given remote building to use more than one group of principal-subordinate. Each principal 18 includes a microprocessor that evaluates the operation data and determines whether an alarm condition exists according to a state machine model that is co-dified within the microprocessor software. The microprocessor through signal processors conditions the inputs provided by each subordinate 20. These inputs are then used by a state machine to determine the status of -the doors as explained below. As a result of the direct connection of the subordinates to the sensors, the machine is directly responding to the real devices that are being monitored. In this way, any errors that can be introduced to an elevator controller are avoided. This is an advantage over conventional remote monitoring systems that are indirectly responsible to the sensors through elevator controller inputs. Since the inputs are processed by the microprocessor, various events and conditions are recorded and stored in memory. In one embodiment, each subordinate also includes a microprocessor that evaluates the operation data and determines whether an alarm condition exists according to a state machine model that is encoded within the microprocessor software. Each of the remote buildings 12 communicates with its associated local supervising center 14 to provide an alarm and operation data. More specifically, each principal 18 communicates with modem 26 in the associated local supervisory center 14. The local processor 28 stores the data withdrawn internally and alerts the local staff as to the existence of an alarm condition and useful operating data to determine the cause of the alarm. The local processor 28 alerts local personnel to these conditions through a printer 30. It should be understood that other means of communicating with local personnel, such as a CRT (cathode ray tubes), can easily be used. It should be understood that even when a pre-cursor and a CRT are shown for use with the invention, the use of only one of them would suffice. Each local processor 28 can transmit alarm and operation data through the modem 26 to another mode 32 located in the storage unit -of data. The alarm and operation data can then be stored in a database 34 for long term evaluation. While volume data storage is a desirable feature of the present invention, it should be understood that storing data in volume for the purpose of evaluating long-term performance is not absolutely essential to the practice of the present invention. Of course, it should be recognized by those skilled in the art that the present invention can be used in a variety of supervisory subjects.

A manual elevator door state machine is implemented in each main 18. Alternatively, the state machine is implemented in the main and each subordinate 20. The -state machine is a sequence model of the manual door system and requires access to a number of door signals as described below. The manual elevator door status machine is also defined as a manual elevator door sequencer. The manual door state machine comprises nodes and vectors. A node is the resulting state of the door due to a sequence of events that have occurred in the door system. Each state that can assume the elevator door is represented graphically by a circle. The mnemonics used within the circle identify the state as described below. A vector is the action or trajectory that the system must take in response to a set of conditions that arise - through the inputs or some other parameter that is being monitored. Each vector has the following characteristics: a) Goto State - Once the conditions are filled, < - ': - the machine updates the new node. b) Vector Priority - All vectors outside a no do receive priority by the vector number; the lowest number having the highest priority. c) Vector Conditions - All vectors have the following conditions: 1) Single Input Conditions - Any input could be true or false, that is, the condition must be true before the goto vector is executed. For example, a vector can be associated with the following conditions: VI: DS (T) which means that vector 1 will be carried out if the signal DS is equal to the logical value of True; VI: DS (F) which means that the vector 1 will be carried out if the signal DS is equal to the - logical value of False. 2) Multiple conditions in a vector - If multiple conditions are present for a vector, a logical "Y" of all conditions is required to bring a new node up to date, that is, all conditions must be true before the goto veto is executed. d) Data functions - Each vector is able to output some output data to the memory. The output capabilities of a vector include accounts that are data that represent specific events such as specific state accounts. Out of sequence, 1 as. Accounts are also used to follow alarm states. Manual door state machine models of different operating states of manual door. Each state is - a result of the previous state and a given condition (ie, change of an entry) that was achieved. The manual door state machine uses a plurality of manual gate sensor signals when determining whether a condition was met as explained below. The selection of the correct sequences - for each manual door system is based on the kind of door system being monitored and its associated available door signals. There are three types of manual door systems that are monitored; to say, manual door systems that have a manual elevator door and an automatic carriage door with two door security chain monitoring signals available for supervision, door systems that have a door box of manual elevator and an automatic carriage door with three door security chain monitoring systems and manual door systems * that have a manual elevator door box and either a manual car door or no door car. The manual door systems have a manual lift box door and an automatic carriage door with two available door safety chain monitoring signals-to monitor with the most popular type of system available. The car door is automatic and only operates in the presence of a halt area. Usually, the elevator box door is an oscillating door that operates by a spring attached to the door so that the turn rotates to its closed position after a passenger has operated the door. The elevator box door must be opened by the passenger who is in the halt or in the car. The elevator box door usually requires independent clamping by a solenoid and is monitored by an ADS auxiliary door switch and a DS door switch. The auxiliary door switch ADS informs the door system if the elevator door is in the closed position and the door switch DS informs the door system if the elevator door is in the closed position and In one embodiment, the supervision of this class of manual doors requires a state machine with seven inputs In the class of manual handling systems the faults associated with the car door and the elevator door are grouped together The next class of manual door systems includes a manual door system that has a manual elevator door and an automatic car door with three available door security chain monitoring signals for inspection. of door systems is similar to the first class described above with the exception that the -car door is in a closed position. The door informs the door system if the car door is in a closed position. The information from the gate switch GS allows the state machine to differentiate between the carriage door faults and the elevator door gate failures as explained below. In one embodiment, the supervision of this class of manual doors requires a state machine with eight inputs. The next class of manual door systems includes a manual door system that has a manual elevator door and either a manual car door or no car door. The operation of this class of door systems is very similar to that of the last of the two door systems' described above with the exception that less -signs are available to determine door failures. As a result, limited supervision can be achieved. However, the interaction of passage can still be distinguished from mechanical failures. In one embodiment, the supervision of this class of manual doors requires a state machine with six inputs. A state machine for each of the above-described door classes substantially supervises the complete sequence of operations performed by the elevator doors. In this way, the state machine 'is the logarithm and altorithm of; kernel that models the normal behavior of the door system in an elevator system. If the elevator door fails to follow the normal sequence, or fails to meet the transition criterion 'between successive states representative of normal operation, an inoperative condition or a fault condition is detected by a transition outside the normal sequence of states towards an inoperative or alarm state. A detailed description of the operation of each of the state machines follows. Each state in the diagrams of Figures 2, 3 and 4 is described along with the requirements and conditions of transition from the state to another successive state. It should be understood that the actual implementation hardware of the state machine requires a programmer to encode all the requirements of the state machine and in particular a language according to the particular hardware being used; however, the coding details are not described because of the particular hardware and. the programming techniques used are a matter of choice that does not cover the inventi concept. vo. In the following description, any malfunction by the gate or gate controller that results in a failure in transition from a particular state to the normal sequence is detected. The specific transition outside of the normal sequence is detected and identified by a transition to a particular -inventory condition. It should be kept in mind that the state machine serves a supervisory function, while a real elevator failure is the casual factor whereas the detection serves only as a supervisory function of the lifting system. Referring to Figure 2, a hand-held door handler of the first class of manual door systems operates as described below. The inputs used by this manual gate state machine are shown in Table I. The mnemonics for the nodes are shown in Table II.

TABLE I Input Definition of Mnemonic BUT Input Button BRK Brake Relay LND Area of the halt DS State Subject of the Elevator Box Door * ADS Auxiliary Door Switch - State Closed Elevator Box Door DOL Open Door Limit - Open Door Door Status INOP Elevator Fault - Elevator Stops TABLE II Node Definition of Nemónico START The system starts in this state DCLS Closed Door CAL Cart Arrived at Apeadero HULK Elevator Box Unhooked DOP Open Cart Door HO Open Lift Box HWC Closed Lift Box DCC Door Closely Ordered Close CDCG Car Door Closing "DNIS Doors Out of Service! DSO C Doors Started Open Without Order The first step in the state machine is to determine if the elevator is at a halt (ie, LND (T)), the brake is holding the machine ( that is, BRK (T)), the censor box door is unlocked and the carriage door is open (ie, DOL (T)). The state machine then moves from the START node to the next DOP node and the status of the door, as it is provided, by the state machine, is updated to Open Door, the state machine moves from the DOP node to the Ordered Door to Close the DCC Node if the door of the elevator --seve to closed (ie, ADS (T)) and a call is logged (BUT (T)). This represents a condition where a passenger may have entered a call to the system, away from the elevator and then another call was recorded for the elevator from somewhere else. This feature allows the scoring machine to ignore "park operation" type operations without requiring an additional parking operation input or may not be available in these types of elevators. The alternative condition that can be detected in the DOP node occurs if the ADS auxiliary door switch is operated by a passenger entering or exiting the car (ie, ADS (F)) and thus the state machine moves to node H O. Door status is also updated to open door. If a passenger, as the state machine on the HWO node, opened the elevator door manual door then the status machine waits to detect the elevator box door in the closed position (ie, ADS (T) ). The elevator box door may be mounted with a spring device or some other device that will return the door to the closed position. When ADS (T) is detected, the system is updated to the "HWC node and the door status is updated at the close of the door.If this condition is not detected for a certain amount of time, the system declares a ADS fault (manual gate failed to close - ADSF node) and updates the door status to DS Fault The common features associated with this type of favila include: a) The lift box door that gets stuck as a result of a return device; and b)) The elevator can not accept other calls because it can not detect a closed door status of the lift box, this may be due to a Door Breaker Fault in the contact. ADSF, the state machine can only be returned to normal operation if it detects a closed-door elevator door condition (ie, ADS (T)) This usually occurs after a mechanic's intervention if c-exists a breaker failure or of disposition of return. The state machine moves to the hwc node and the door status is updated to Door Closing.

In the HWC node, the state machine waits for a registered call. When the call is detected (ie, BUT (T)), the state machine moves to the DCC node. If a call is recorded and the elevator box door is closed, it is ordered to the car door that closes. Alternatively, if the - state machine detects that the elevator box door was opened again on this floor without moving the elevator (ADS (F)), then the state machine moves back to the HWO node and sets the gate status to Open Door. This represents a cushion where a passenger can reach the floor and the elevator is already parked on that floor or a condition where a passenger returns to the elevator shortly after leaving the elevator car. All these conditions which are considered to be normal transmission interference with the elevator system are not interpreted by the present invention as alarm conditions. If the carriage doors are closing at the -DCC node, the state machine will detect a DOL condition (F) and put the state of the doors to the CDCG node. If the elevator car door failed, the state machine remains in this node. This feature allows the mechanic to determine the t >; nature of the fault before taking to the site. If the elevator car is no longer assigned to the call (BUT (F)) then the status switch returns to the HWC node and the status of the doors is closed, but the elevator car is waiting for a call. A probable cause of the system being in the node - CDCG and the condition DOL (T) is detected is that the passage opened the door again by the door opening button or by reversing the doors. The state machine moves back to the DCC node and waits for DOL (F); that is, the door has begun to close again. This allows the state machine to eliminate the investment and another passenger to interact with the closed door operation. If while in the CDCG node, a clamped door condition is detected (ie DS (T)) and the brakes have been requested to stop holding the lifted in step (BRK (T)) the system is then detected moves to the DCLS node. This represents the condition of closed doors and a moving elevator. The door entrance is updated to Puerta Cerrada. If the state machine detects that the car door has not been closed-after a certain time, then it declares a car door in fault to close by updating the CDFC node. The default time is a normal closing time multiplied by a factor such as ten. The alarm condition in the CDFC node represents a failure for the car door to close or a system failure to detect the clamping of the manual elevator door. This fault condition requires intervention by the mechanic and may represent a trapped passenger condition. However, if a DS (T) and a BRK (G) are detected during this state, the alarm is cleared. If the state machine detects a DS (F) condition in the DCLS node, the doors have been unlatched or opened. In this way, the state machine moves to the DSOWC node and sets the gate state to Door Closing to -current. This is a failure condition. It is helpful to the mechanic to know that the door was open while the car was in operation, because it may represent that an elevator l worked badly, hacking an elevator car door as the cam was traveling through. of an elevator box. You can also tell the mechanic that the liftgate door switch or car gate switch may have failed. Alternatively, when in the DCLS node, if the monitoring system detects a BRK (F) and a halt area - (ie, LND (T)) the car has reached its destination and the state machine moves to the destination. CAL node and the gate state is set to -current to Gate Opening. If the state machine in the CAL no. Detects a DS (F) then the elevator box door has been disengaged and the state machine is moved to the HULK node. If no changes are detected in the entries in the node --HULK, for a predetermined amount of time longer than the average time of the normal open car door, - the state machine moves to the CDFO node and a car door failed to open it is declared alarm. This condition represents that the car door operator has failed and that the disengagement mechanism H is not physically disengaged. It is also possible that the DOL switch may have failed and is unable to indicate that the door has been opened. Each of these conditions requires a mechanic to intervene and correct the problem. Alternatively, in the HULK node, if a condition --DOL (T) is detected then the state machine moves to the CDPO node and the - door state is Door Open. If at any point during operation of the state machine an INOP (T) condition is detected then something other than the door system has disabled the elevator and the elevator doors are not in service. Referring to Figure 3, a manual door state machine for the second class of door systems - manual operates as described below. The gateway switch input is available for monitoring in this class of gate systems. The gate switch signal - provides additional information pertaining to fault conditions so that additional nodes are implemented by the state machine for both normal operations and for failed operation detection. The configuration logic 42, 44 which uses the signal GS of the 'circuit breaker' is described below. The mnemonics for the additional nodes used in the door-state machine are shown in Table III.

TABLE III Node Definition of Nemónico ULKF Unlocking Failure DOPG Opening of Carriage Door LKF Locking Failure LOCK Holding Wait If the signal GS of the circuit breaker changes to a logical "0" (ie, GS (F)) in the HULK node then the car-door is opening and the state machine moves to DOPG. If the switch signal GS does not change (ie, GS (I) remains) then the state machine moves to the --ULKF node and a trip failure is detected. The de-clutch failure occurs as a result of a problem in the clamping mechanism or in the connection between the clamp and the operator. If the state machine is in the DOPG node and a DOL (T) condition is stopped (ie, the carriage door is completely open) then the state machine moves to the DOP node. If DOL (T) is not detected within a certain time, the system moves to the CDFO node and the carriage gate failed to open and becomes clear as the Gate State. In one embodiment, the determined time is the average time of a normal car open door multiplied by a factor, for example, such as three. The failed car door operator can cause this failure, it is also possible that the DOL switch may have failed and - is unable to indicate that the door has been opened. In any situation, a mechanic is required to intervene and correct the problem. If the state machine is in the CDCG node and the system detects a GS (T) (ie the carriage gate switch is closed and activated) then it moves to the LOCK node. If the state machine does not detect a change in the switch signal GS for a specified time, the state machine moves to the CDFC node and a car door is declared failed to open in the Gate State. In a modality, the determined time is the average time of a car door closes normally muLiplized by a factor such as, for example, three. This condition indicates that the car door may have -fallen as a result of a door jam or as a result of a failed gate switch. In any situation, a mechanic is required to intervene and correct the problem. If in the LOCK node, the elevator box doors are properly clamped and the brakes are removed to retain the elevator (ie, DS (T) and a BRK (T)) then the state machine determines that a condition exists. of normal operation and moves to the DCLS node. However, if no clamping or brake removal action is detected in a certain amount of time, the state machine moves to the LKF node and declares a clamping failure or brake failure. Referring to Figure 4, if the door system being monitored is in the third class of manual door systems then the monitoring system uses a state machine that requires only the following inputs and the following nodes: Input Definition of Bmonicone BUT Button Input BRK Brake Relay LND Barrier Area DS Status of Elevator Box Door ADS Auxiliary Door Switch - Closed Elevator Box Door Status INOP Elevator Fault - Elevator Stored Node Definition of Nemónico STÍART The system starts in this state DCLS Closed door CAL Cart Arrived at the Apeadero HULK Elevator box Unhooked HWO Open elevator box HWC Closed elevator box CDCG Closed door DNIS Doors not in service DSOWC doors opened to open without Order The nodes of this state machine are a subset of the nodes of the state machines described above. In this way, the operation of this state machine, with respect to the common nodes, is as described above. in this manner, the present invention provides an improved apparatus and method for monitoring a manual elevator door system that maximizes the reliability of the alarm data when monitoring a manual elevator door system-differentiating between passenger interaction and a failing condition in a manual elevator door system. Various changes can be made to the foregoing description without abandoning the spirit and scope of the present invention as will be obvious to one of ordinary experience in the field of the present invention.

Claims (19)

1. - A method for monitoring a manual elevator door system comprising the steps of: providing a plurality of sensor signals; detect sensor signals; determine in response to the detection of sensor signals * that an elevator car is stopped at a halt; determining in response to detection of the sensor signals that an elevator car door is open; determining in response to detection of the sensor signals that an elevator box door is unlatched; determining in response to detection of the sensor signals that an elevator box door is closed; determining in response to detection of the sensor signals that a call has been assigned to the elevator car during a time when the elevator door is closed; and providing an operating data signal in response to the determinations, wherein the operating data signal is representative that the manual elevator door system is in a non-alarm condition.

2. A method for monitoring a manual elevator pedestal system as described in claim 1, further comprising the steps of transmitting the operation data signal to a monitoring center.

3. A method for monitoring a manual elevator door system as described in claim 1, further comprising the steps of: determining in response to detection of the sensor signals that the elevator door is open; determining in response to detection of the sensor signals f 'that a call made at another halt has not been assigned to the elevator car while the elevator door is open for a certain time; and providing an alarm data signal in response to the determinations, wherein the operating data is representative that the manual elevator door system is in an alarm condition.

4. A method for monitoring a manual elevator door system as described in claim 3, wherein the alarm data signal represents a manual door closure failure.

5. A method for monitoring a manual elevator pedestal system as described in claim 3, further comprising the steps of transmitting the alarm data signal to a monitoring center.

6. A method for monitoring a manual elevator door system comprising the steps of: providing a plurality of sensor signals; detect sensor signals; determine in response to detection of sensor signals that an elevator car is stopped at a halt; determining in response to detection of the sensor signals that an elevator car door of the elevator car is closed; determining in response to detection of the sensor signals that a call is assigned to the elevator car; and determining that a car door has not been closed in response to the call within a certain time; and providing an alarm data signal in response to said determinations.

7. A method for monitoring a manual elevator door system as described in claim 6, wherein the method provides an alarm data signal if the reverse has not occurred and the car door has not been closed in response to the alarm. call within a certain time.

8. A method for monitoring a manual elevator door system as described in claim 6, further comprising the steps of transmitting the alarm data signal to a monitoring center.

9. A method for monitoring a manual elevator door system as described in claim 6, wherein the alarm data signal represents a car door latch failure.

10. - A method for monitoring a manual elevator door system as described in claim 6, wherein the alarm data signal represents an elevator box door fastening failure.

11. An apparatus for monitoring a manual lift door system of an elevator system having an elevator car, an elevator car door and an elevator car door, the apparatus comprising: a plurality of sensors to provide sensor signals; and a processor for processing the plurality of sensor signals, wherein the processor provides an operation data signal if the elevator car stops at a halt, the elevator car carriage door is open, the elevator door The elevator is closed and unlatched, and a call for the elevator car has been registered while the elevator door is closed, wherein the operating data signal is representative of the fact that the manual door-opener system is not It is in alarm condition.

12. An apparatus for monitoring a manual elevator door system as described in claim 11, wherein the operating data signal comprises a door-to-door signal.

13. An apparatus for monitoring a manual elevator door system as described in claim 11, wherein the processor provides an alarm data signal if a call at another halt for the elevator car has not been made. registered while the lift box door is open for a certain time.

14. An apparatus for monitoring a manual elevator door system as described in claim 13, wherein the alarm data signal represents a manual door closure failure.

15. An apparatus for monitoring a manual elevator door system as described in claim 13, the processor transmits the alarm data signal to a centimeter of the monitoring.

16. An apparatus for monitoring a door system -of a manual elevator of an elevator system having an elevator car, an elevator car door and an elevator elevator door, the apparatus comprising: a plurality of sensors to provide sensor signals; and a processor for processing the plurality of sensor signals, wherein the processor provides an alarm data signal if the elevator car stops at a halt, the elevator car door of the elevator car is closed, a call for the elevator car has been assigned, and the car door has not been closed in response to the call within a certain time.

17. - An apparatus for monitoring a manual elevator door system as described in claim 16, in which the processor transmits the alarm data signal to a supervision bus.

18. An apparatus for monitoring a manual elevator door system as described in claim 16, wherein the alarm data signal represents a closing failure of the car door.

19. An apparatus for monitoring a manual elevator door system as described in claim 16, wherein the alarm data signal represents an elevator box door fastening failure.