JPH1149446A - Diagnosis system for automatic grounding device of elevator at power failure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diagnosis system for an automatic grounding device of an elevator at power failure capable of allowing the diagnosis of a battery for the automatic grounding device at power failure and the diagnosis of an operating condition for rescue operation without interrupting elevator operating service. SOLUTION: A diagnosis device has a temperature detector 14 to detect a temperature, current detecting means 11 to detect a dischage current in a battery 31, voltage and current storage means 12 to store voltage information Vn and current information In, discharge amount computing means 13 to compute a discharge amount Xn and store a time Txn when the discharge amount is a specified value An, diagnosis reference voltage storage means 15 to store diagnosis reference voltage Vj, operation information storage means 16 to store elevator operation information Dn, reference operation information storage means 17 to store an ideal value Tjn, control means 18 to diagnose the capacity of the battery 31 and a operating condition for rescue operation and communication means 19 to communicate the diagnosis result of the battery and the diagnosis result of the operating condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diagnostic device for an automatic landing device at the time of an elevator power failure.

[0002]

2. Description of the Related Art Elevating devices for buildings such as elevators are equipped with a battery as a backup power supply for rescue operation at the time of power failure. A battery as a backup power source is required to have high reliability in order to reliably perform a rescue operation at the time of a power failure. For this reason, the battery of the automatic landing device at the time of power failure is subjected to a comprehensive diagnosis by measuring the voltage, the amount of the electrolyte solution, and the specific gravity in addition to the appearance check in a regular maintenance operation.

[0003] In addition, in order to check the operation state of the automatic landing device at the time of power failure, a maintenance staff operates a diagnostic switch provided at the automatic landing device at the time of power failure to perform a rescue operation for inspection using a battery as a power supply. If the rescue operation ends normally, the operation state is determined to be normal.

[0004]

The above-described battery inspection method according to the prior art is very troublesome because it requires measurement of a plurality of items such as battery voltage, electrolyte volume and specific gravity.
There is a problem that a difference in the diagnosis result appears depending on the experience of the maintenance staff.

[0005] Further, in the conventional operation state inspection method, it is necessary that maintenance personnel continue to monitor the operation state, it is necessary to interrupt the normal elevator operation service during the rescue operation, and the rescue operation is abnormal. When the process is completed, there is a problem that the cause of the abnormality must be separately investigated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a diagnostic apparatus for an automatic landing device at the time of an elevator power failure, in which a battery check operation and an operation state check operation currently performed by a maintenance person can be automatically performed without interrupting an elevator operation service. Is to provide.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is intended to prevent passengers from being trapped in a car when an elevator that drives a motor using a commercial AC power supply in a normal state loses power. In a diagnostic device for an automatic landing device at the time of an elevator power outage that drives a motor using a battery as a power source and performs rescue operation, current detection means for detecting a discharge current of the battery, and a voltage and current for storing a battery voltage and a discharge current during the rescue operation Storage means for calculating the amount of battery discharge during the rescue operation by integrating the current detection results of the current detection means, and for storing the time at which the amount of discharge reaches a specific value; and calculating the temperature during the rescue operation. Temperature detecting means for detecting, diagnostic reference voltage storing means for storing a diagnostic reference voltage at the time of battery diagnosis, operating information storing means for storing elevator operating information, rescue The reference operation information storage means storing the ideal value of the contact operation timing at the time of turning, the clock function for measuring the day of the week and the date and the function of creating an elevator call, and the discharge amount stored in the voltage / current storage means to a specific value The battery voltage at the time of the failure is compared with the diagnosis reference voltage of the diagnosis reference voltage storage means to determine the capacity of the battery, and the contact operation timing at the time of rescue operation is obtained from the operation information stored in the operation information storage means. Control means for diagnosing a rescue operation state by comparing this with an ideal value of the contact operation timing stored in the reference operation information storage means,
Equipped with communication means for communicating the battery diagnosis result and the operation state diagnosis result with the elevator maintenance company, the rescue operation for diagnosis is automatically performed without interrupting the elevator operation service, and the battery diagnosis and the operation state are performed. Is diagnosed.

In the present invention, during a predetermined time period during which the elevator utilization rate is low, the control means outputs a power failure signal to create a power failure state, and starts a rescue operation for diagnosis. At this time, the temperature information is detected by the temperature detection means, the discharge current during the rescue operation is detected by the current detection means, and the battery voltage and current information during the rescue operation are stored in the voltage / current storage means. Here, the discharging amount calculating means calculates the discharging amount during the rescue operation by integrating the current information, and stores the time when the discharging amount reaches a specific value. Further, the driving information storage means stores driving information of the elevator during the rescue operation.

After the rescue operation is completed, the control means reads out the detected temperature information and the voltage information at the time when the discharge amount reaches a specific value from the voltage / current storage means, and then reads out the specific discharge amount from the diagnostic reference voltage storage means. Then, a diagnostic reference voltage that matches the temperature detected by the temperature detecting means is read, and the battery is diagnosed by comparing with the battery voltage at the specific discharge amount.

[0010] Further, the control means obtains the operation timing of the contact operated during the rescue operation from the operation information stored in the operation information storage means, and obtains this from the ideal value of the contact operation timing stored in the reference operation information storage means. Then, the driving state during the rescue operation is diagnosed. The communication means communicates the battery diagnosis result and the operation state diagnosis result to the elevator maintenance company.

Thus, the battery check operation and the operation state check operation currently performed by the maintenance staff can be automatically performed without interrupting the elevator operation service.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 is a block diagram of the present invention.
Is connected to the commercial AC power supply 4 to detect a power failure of the commercial AC power supply, a main converter 21 that converts an AC voltage of the commercial AC power supply 4 into a DC voltage, and smoothes an output voltage of the main converter 21. A smoothing capacitor 22, a main inverter 23 for converting a DC voltage into a three-phase AC voltage having a variable voltage and a variable frequency, an electric motor 24 connected to the main inverter 23 to drive a car 26, and a sheave 24 attached to a rotating shaft of the electric motor 24; , A counterweight 27 connected to the car 26 in a slidable manner, an elevator power supply 28 connected to the commercial AC power supply 4, and an elevator controller 29 connected to the elevator power supply 28.

The automatic landing device 3 at the time of a power failure is
8, connected to the charger 30, connected to the charger 30,
A battery 31 serving as a power supply at the time of power failure, an inverter 32 for converting a DC voltage of the battery 31 into a three-phase AC voltage, and boosting transformers 33, 34, and 35 for boosting an output voltage of the inverter 32 to a commercial AC power supply voltage include the power failure. Detector 20
The normally closed contact a and the normally closed contact b, 36, which are opened by a command output by the
And 37 provide a rescue operation circuit that closes in response to a command output from the power failure detector 20 and supplies a three-phase AC voltage of the step-up transformer 33 to the power supply device 28 and a DC voltage of the battery 31 to the main converter 21 at the time of power failure. It comprises a normally open contact c and a normally open contact d to be formed.

The automatic landing apparatus 1 at the time of a power failure according to the present invention has the following configuration. 11 is a current detecting means for detecting the discharge current of the battery 31, 12 is a voltage / current storing means for storing the voltage information Vn of the battery 31 during the rescue operation and the current information In detected by the current detecting means 11, and 13 is a voltage / current storing Means 1
2 to calculate the amount of discharge Xn during the rescue operation by integrating the current information In stored in the storage unit 2 and to determine whether the amount of discharge is a predetermined specific value A.
discharge amount calculating means for storing the time Txn at which n has been reached, 14
Is a temperature detecting means for detecting temperature information Thn at the time of rescue operation; 15 is a voltage at an arbitrary temperature and an arbitrary discharge amount of the battery degraded to the minimum capacity necessary for the rescue operation as a diagnosis reference voltage Vj at the time of battery diagnosis. The stored diagnostic reference voltage storage means 16 stores elevator operation information D during rescue operation.
operating information storage means for storing n; reference operation information storage means for storing an ideal value Tjn of the operation timing of the contact operated during rescue operation; and 18 a clock function for measuring the day of the week, date and time, and an elevator call. A discharge amount Xn from the voltage / current storage means 12
And the diagnostic reference voltage Vjn that matches the rescue operation temperature information THn detected by the temperature detecting means 14 at the time Tn when the diagnostic reference voltage Vj
n is compared with the voltage information Vn to diagnose the capacity of the battery 31. Further, the contact operation timing Tdjn at the time of rescue operation is obtained from the operation information Dn stored in the operation information storage means 16, and this is referred to as the reference operation information storage means. Control means for diagnosing the operating state of the rescue operation by comparing with the ideal value Tjn of the contact operation timing stored in the memory 17; communication for transmitting the battery diagnosis result and the operating state diagnosis result by the control means 18 to the elevator maintenance company 5 It comprises means 19.

Here, the concept of the diagnostic reference voltage Vj stored in the diagnostic reference voltage storage means 15 will be described with reference to FIG.
The diagnostic reference voltage Vj stores the battery voltage at an arbitrary temperature and an arbitrary discharge amount of a battery degraded to the minimum capacity required for rescue operation. When the discharge amount is the same, the higher the temperature, the higher the diagnostic reference voltage Is higher, and when the temperature is the same, the smaller the discharge amount, the higher the reference voltage.
Since a plurality of temperatures and reference voltages corresponding to a plurality of discharge amounts are provided, the rescue operation is performed by using the temperature information THn detected by the temperature detection unit 14 and the discharge amount Xn obtained by the discharge amount calculation unit 13. Diagnostic reference voltage Vjn that meets the conditions of the time
Can be taken out.

Next, the operation of the present invention will be described with reference to the flowcharts of FIGS.

Steps 1 and 2 are processing for judging start conditions of rescue operation for diagnosis. First, the current day of the week and time are measured, and it is determined whether or not the time period is during which the elevator utilization is low (step 1).
The operation information is read from the control device 29 via the control unit, and it is determined whether there is a passenger of the elevator at present (step 2). The control means 18 repeats these determination processes until the conditions of step 1 and step 2 are satisfied, and shifts to the process of step 3 after the determination conditions are satisfied.

Steps 3 to 7 are preparatory processes for rescue operation for diagnosis. First, the control means 18 outputs a descent operation call to the elevator control device 29 (step 3). In response to this, the elevator control device 29 starts a normal descent operation. After the descent operation is completed, the control means 18
Generates an ascending operation call to the elevator controller 29 (step 4), and the elevator starts normal ascending operation.

Here, the control means 18 reads out the position information of the car 26 from the elevator control device 29 via the operation information storage means 16 (step 5), and judges whether the current car position is within the door opening / closing zone (step 5). Step 6). Step 5 until the car position is outside the door opening / closing zone,
Step 6 is repeated.

When the control means 18 confirms that the car position is outside the door opening / closing zone, it outputs a power failure signal PF to the power failure detector 20 (step 7). Power failure signal PF
The power failure detector 20 which has received the signals (i.e., the normal power contact detector) opens the normally closed contact a34 and the normally closed contact b35, and closes the normally open contact c36 and the normally open contact d37. Normally closed contact a34 and normally closed contact b
When the circuit 35 is opened, the elevator power supply device 28 and the main converter 21 are disconnected from the commercial AC power supply 4 to be in a power outage state, and the elevator is emergency stopped. On the other hand, the normally open contact c3
6 and the normally open contact d37, the main converter 21
The DC voltage of the battery 31 is applied, and the DC voltage of the battery 31 is converted to a three-phase AC voltage by the inverter 32, boosted to the commercial AC power voltage by the boost transformer 33, and supplied to the elevator power supply device 28. You. Thereby, the elevator control device 29 is restarted.

Here, the restarted elevator control device 2
9 detects the occurrence of a power failure and starts a rescue operation (step 8). After starting the rescue operation, the control means 18 detects and stores the temperature information Thn at the time of the rescue operation using the temperature detecting means 13 (step 9). Subsequently, the control unit 18 sets 0 to a flag n for managing the number of times of measurement of the voltage information Vn and the current information In during the rescue operation (step 10).

The processing from step 11 to step 14 is as follows:
This is detection processing of voltage information Vn and current information In in battery diagnosis. First, the voltage / current information storage unit 12 stores the battery voltage information Vn during the rescue operation and the current information In detected by the discharge current detection unit 11 (Step 1).
1). Subsequently, the discharge amount calculation means 13 integrates the current information In stored in the voltage / current storage means 12, calculates the discharge amount Xn during the rescue operation (step 12), and sets the discharge amount Xn to a predetermined specific value. It is determined whether or not An has been reached (step 13). Here, the specific value An of the discharge amount is a value equal to an arbitrary discharge amount stored in the diagnosis reference voltage storage unit 15.

If the discharge amount is not An in step 13, the process proceeds to step S15. If the discharge amount becomes An, the process proceeds to step S14.
The time Txn when the discharge amount reaches An is calculated by the discharge amount calculating means 13.
After that, the process proceeds to step S15.

Steps 15 to 18 are processing for measuring driving information for diagnosing the driving state of the rescue driving.
First, the control unit 18 reads the current operation information Dn and the previous operation information Dn-1 from the operation information storage unit 16 (steps 15 and 16). Subsequently, the control means 1
8 compares the current driving information Dn with the previous driving information Dn-1, and determines whether there is a change in the driving information (step 1).
7). If there is no change in the driving information, step 1
Shift to the processing of No. 9, and conversely, if there is a change in the driving information,
After storing the change occurrence time Tdn (step 18),
The process moves to step S19.

In step 19, the operation information storage means 1
No. 6 overwrites the previous operation information Dn-1 with the current operation information Dn and updates the content of the previous operation information. In step 20, the control means 18 determines whether the rescue operation for diagnosis has been completed. If the rescue operation has not been completed,
In step 21, 1 is added to the measurement number management flag n to update the measurement number. Thus, the control means 18
Repeats the processing from step 11 to step 20 until the rescue operation ends. On the other hand, if it is determined in step 20 that the rescue operation has been completed, the process proceeds to step 22 and the total number of measurements Jn is stored in the number-of-times-of-measurement management flag n.

Steps 23 to 27 are a battery diagnosis process. First, the control means 18 reads the battery voltage Vn at time Txn from the voltage / current storage means 12 (step 23). Next, the control means 18 reads the temperature Thn during the rescue operation and the diagnostic reference voltage Vjn at the specific discharge amount An from the diagnostic reference voltage storage means 15 (step 24).

The control means 18 compares the battery voltage Vn at time Txn with the diagnostic reference voltage Vjn (step 25). If Vn> Vj, the capacity of the battery is larger than that of the deteriorated battery, that is, necessary for rescue operation. Diagnosis is made as having passed with capacity (step 26). On the other hand, when Vn ≦ Vj, the capacity of the battery is smaller than that of the deteriorated battery, that is, the battery does not have the capacity necessary for rescue operation, and it is determined that the battery is rejected (step 27).

Steps 28 to 34 are operation state diagnosis processing during rescue operation. In step 28, the control means 18 sets 0 to the measurement number management flag n. Next, the control means 18 obtains the difference between the time Tdn + 1 at which the operation information has changed and the time Tdn at which the operation information change occurred one time before, and stores the difference as the operation timing Tdjn of the nth contact operated during the rescue operation. (Step 2
9). Subsequently, the control unit 18 controls the reference operation information storage unit 1
7, the ideal value Tjn of the operation timing of the n-th contact operating during the rescue operation is read (step 30), and is compared with the contact operation timing Tdjn (step 3).
1). If the difference between the actually measured contact operation timing Tdjn and the ideal value Tjn of the contact operation timing is within an allowable range,
During the rescue operation, the operation timing of the contact that operates nth time is diagnosed as normal (step 32), and conversely, Tdjn and Td
If the difference n exceeds the allowable range, the operation timing of the contact is diagnosed as abnormal (step 33). Control means 18
Repeats the processing from step 29 to step 35 for the total number of measurements Jn times (step 34), and diagnoses the operation timing of all the contacts operating during the rescue operation.

Finally, the communication 19 transmits the battery diagnosis result obtained in step 26 or step 27 and the operation information diagnosis result obtained in step 32 or step 33 to the elevator maintenance company 5.

In the present embodiment, the start of the rescue operation for diagnosis is managed by the control means 18. However, the start command of the rescue operation is transmitted from the elevator maintenance company 5 to the communication means 1.
9 to make a diagnosis at any time.
Further, according to the present invention, since the operation timings of all the contacts operating during the rescue operation can be diagnosed, even if the rescue operation does not end normally for some reason, the cause of the abnormality can be easily investigated.

[0032]

As described above, according to the present invention, the rescue operation for diagnosis is automatically started at a predetermined time period when the elevator utilization is low, and the discharge amount of the battery at this time becomes a specific value. The battery voltage at the time when the battery voltage reaches the predetermined value and the battery voltage at the time when the discharge amount of the battery degraded to the minimum capacity for rescue operation stored in advance reaches a specific value to diagnose the capacity of the battery and to increase the elevator control device The operation state of the rescue operation is diagnosed by comparing the contact operation timing obtained from the operation information at the time of the rescue operation with the ideal value of the contact operation timing stored in the reference operation information storage means, and the battery diagnosis result and the operation state diagnosis result are obtained. Is transmitted to the elevator maintenance company, and the battery operation and the operation state inspection work conventionally performed by the maintenance staff are interrupted by the elevator operation service. It can be automatically performed without.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a configuration of a diagnostic device of an automatic landing device at the time of an elevator power failure according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing the concept of a diagnostic reference voltage storage means.

FIG. 3 is a flowchart showing the operation of the present invention (part 1);
It is.

FIG. 4 is a flowchart showing the operation of the present invention (part 2);
It is.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diagnosis device of automatic landing device at power failure 11 Current detection means 12 Voltage current storage means 13 Discharge amount calculation means 14 Temperature detection means 15 Diagnosis reference voltage storage means 16 Operation information storage means 17 Reference operation information storage means 18 Control means 19 Communication Means 2 Elevator 20 Power Failure Detector 21 Main Converter 22 Smoothing Capacitor 23 Main Inverter 24 Electric Motor 25 Sheave 26 Riding Car 27 Balancing Weight 28 Power Supply 29 Control Circuit 3 Automatic Landing Device at Power Failure 30 Charger 31 Battery 32 Inverter 33 Boost Transformer 34 , 35 normally closed contact a, normally closed contact b 36, 37 normally open contact c, normally open contact d 4 commercial AC power supply 5 elevator maintenance company

Continued on the front page (72) Inventor Keijiro Amano 2477 Takaba, Hitachinaka City, Ibaraki Prefecture Inside Hitachi Car Engineering Co., Ltd. (72) Inventor Takashi Fujimoto 2477 Takaba Hitachinaka City, Ibaraki Prefecture Inside Hitachi Car Engineering Corporation

Claims (2)

[Claims] 1. An elevator blackout for rescue operation in which an elevator that drives a motor using a commercial AC power supply as a power source in a normal state is out of power by driving the motor using a battery as a power source to prevent passengers from being trapped in a car. In the diagnosis device of the automatic landing device, the current detection means for detecting the discharge current of the battery, the voltage / current storage means for storing the battery voltage and the discharge current during the rescue operation, and integrating the current detection results of the current detection means Calculates the amount of battery discharge during the rescue operation and stores the time when the amount of discharge reaches a specific value, temperature detection means for detecting the temperature during the rescue operation, and stores a diagnostic reference voltage for battery diagnosis Diagnostic reference voltage storage means, operating information storage means for storing elevator operating information, reference storing ideal values of contact operation timings during rescue operation Transfer information storage means, a clock function for measuring the day of the week and date and time, a function for creating an elevator call, a battery voltage at the time when the discharge amount stored in the voltage / current storage means reaches a specific value, and the diagnostic reference voltage storage means. The battery capacity is diagnosed by comparing the reference voltage with the diagnosis reference voltage, and the contact operation timing at the time of rescue operation is determined from the operation information stored in the operation information storage means, and the contact operation timing is stored in the reference operation information storage means. Interruption of the elevator operation service by providing control means for diagnosing the rescue operation state in comparison with the ideal value of the operation timing, and communication means for communicating the battery diagnosis result and the operation state diagnosis result with the elevator maintenance company Elevator power failure characterized by automatically performing rescue operation for diagnosis, and diagnosing battery diagnosis and operating status Diagnostic device for automatic landing equipment. 2. The diagnostic reference voltage stored in the diagnostic reference voltage storage means is a battery voltage at an arbitrary temperature and an arbitrary discharge amount of a battery deteriorated to a minimum capacity required for rescue operation. The diagnostic device for an automatic landing device at the time of an elevator power failure according to claim 1.