KR100785179B1 - Elevator Governor - Google Patents

Abstract

The elevator governor according to the present invention measures the speed of the vehicle 1 based on an encoder 8 that detects a physical quantity that changes with the lifting and lowering of the vehicle 1 of the elevator, and a signal output from the encoder 8. And a first microcomputer 9 for determining whether or not the calculated speed of the vehicle 1 has exceeded a preset first or higher speed level, wherein the speed of the vehicle 1 is equal to or greater than the first or more speed level. When the first microcomputer 9 determines that it has passed, the vehicle 1 is stopped.

Description

Elevator governor {Elevator Governor}

The present invention relates to an elevator governor, and more particularly, to an electronic governor using a microprocessor.

In general, the governor of an elevator can be roughly divided into a disc type and a flyball type. Such a specific structure is described, for example in "Explanation of the Construction Standards Act and Enforcement Decree Elevator Technical Standards" issued by the Japan Elevator Association (1994 edition). According to this document, both the disc type and the flyball type change both the vehicle's movement to rotational movement and the pendulum installed therein acts in response to the speed by centrifugal force, thereby detecting the speed and opening the speed switch. Next, there is a structure in which the governor rope is buried in the mouth to operate the emergency stop device. In addition, below, the operation | movement which opens an overspeed switch is called a catch operation | movement which restricts a switch operation | movement, a governor rope, and operates an emergency stop device.

Further, Japanese Patent Laid-Open No. 2001-122549 describes a means for causing electrical energy in accordance with a vehicle speed and an actuator operated by the electrical energy, and means for performing overspeed detection and catching.

Such a technique converts a vehicle's movement into a pendulum to obtain a switch operation or a catch operation, or converts a vehicle's movement into electrical energy, and operates an actuator according to the electrical energy to perform a switch operation and a catch operation. It is a technique to get. In other words, each movement is obtained by converting the movement of the vehicle into mechanical energy or electrical energy of the pendulum. The operation is assured by converting it to another energy once, but there is some gap in the operation speed, and it is not easy to prevent the malfunction.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to implement a governor that can be precise and prevents malfunction without sacrificing stability.

An elevator governor according to the present invention includes a detector for detecting a physical quantity that changes with the elevation of an elevator vehicle, a first speed calculator for calculating the speed of the vehicle based on a signal output from the detector, and And a first microcomputer having a first speed determination section that determines whether or not the speed of the vehicle calculated by the first speed calculating section has exceeded a first predetermined speed level, wherein the speed of the vehicle is equal to the first speed level. When the first speed judging section determines that the vehicle has passed, the vehicle is stopped.

Moreover, the speed governor for elevators in this invention is a detector which detects the physical quantity which changes with the elevation of the vehicle of an elevator, and the 1st speed calculating part which calculates the speed of the said vehicle based on the signal output from the said detector. A first speed determining unit that determines whether or not the speed of the vehicle calculated by the first speed calculating unit exceeds a preset first speed level, and the speed of the vehicle calculated by the first speed calculating unit is determined by the first speed calculating unit. And a first microcomputer having a second speed determining unit that determines whether or not a second speed level higher than a first speed level has been exceeded, wherein the first speed determining unit determines that the speed of the vehicle has exceeded the first speed level. In the case, the power supply to the hoisting winch of the vehicle is stopped, and the speed of the vehicle exceeds the second speed level. If the second speed determination unit is determined, it is to activate the emergency stop of the vehicle.

Moreover, the speed governor for elevators of this invention is a detector which detects the physical quantity which changes with the elevation of the vehicle of an elevator, the 1st speed calculating part which calculates the speed of the said vehicle based on the signal output from the said detector, And a first microcomputer having a first speed determining unit that determines whether or not the speed of the vehicle calculated by the first speed calculating unit has exceeded a first preset speed level, and monitors an operating state of the first microcomputer. The first speed determining unit determines that the speed of the vehicle exceeds the first speed level, or that the first microcomputer is in a state in which speed determination is impossible. If the device determines, the vehicle is stopped.

Moreover, the speed governor for elevators of this invention is a detector which detects the physical quantity which changes with the elevation of the vehicle of an elevator, the 1st speed calculating part which calculates the speed of the said vehicle based on the signal output from the said detector, And a first microcomputer having a first speed judging section for judging whether or not the speed of the vehicle calculated by the first speed calculating section has exceeded a preset first speed level, and based on the signal output from the detector. A second microcomputer having a second speed calculating section for calculating a speed of the vehicle and a second speed determining section for determining whether or not the speed of the vehicle calculated by the second speed calculating section has exceeded a first predetermined speed level. The first speed determining unit determines that the speed of the vehicle has exceeded the first speed level, and Is to stop the vehicle when the second speed determination unit determines that the speed of the vehicle has exceeded the first speed level.

The first monitoring device for monitoring the operating state of the first microcomputer, the second monitoring device for monitoring the operating state of the second microcomputer, and the first microcomputer are in a state where speed determination is impossible. The vehicle is stopped when the first monitoring device determines, or when the second monitoring device determines that the second microcomputer is in a state in which speed determination is impossible.

Moreover, the elevator governor in this invention is a detector which detects the physical quantity which changes with the elevation of the vehicle of an elevator, and the 1st speed calculating part which calculates the speed of the said vehicle based on the signal output from the said detector. And a second microcomputer having a first microcomputer having a second speed calculating section that calculates a speed of the vehicle based on a signal output from the detector, wherein the first microcomputer is provided by the first speed calculating section. And a first deviation determining unit that determines whether or not a deviation between the calculated vehicle speed and the vehicle speed calculated by the second speed calculating unit exceeds a preset value, and the determination result of the first deviation determining unit Stop the vehicle on the basis of.

Further, the second microcomputer determines whether the deviation between the speed of the vehicle calculated by the first speed calculating unit and the speed of the vehicle calculated by the second speed calculating unit exceeds a preset value. It has a 2nd deviation determination part, and stops the said vehicle based on the determination result of the 2nd deviation determination part.

Moreover, it has a battery which supplies power to the said detector and the said microcomputer at the time of a power failure.

The vehicle is stopped by interrupting the power supply to the hoist of the vehicle.

Moreover, the vehicle is stopped by operating the emergency stop of the vehicle.

The detector is an encoder or an acceleration sensor.

1 is a configuration diagram of an elevator having a governor according to the first embodiment.

2 is a view showing a drive circuit of an actuator for emergency stop operation.

Fig. 3 is a diagram showing a drive circuit such as a main contactor MC 27 of the motor drive circuit.

4 is a schematic diagram of a motor drive circuit.

5 is a conceptual diagram showing the configuration of the encoder 8. FIG.

FIG. 6 is a diagram showing an internal configuration of the first microcomputer 9 and the second microcomputer 10. FIG.

FIG. 7 is a diagram showing an internal configuration of the first microcomputer 9 and the second microcomputer 10 of the second embodiment. FIG.

8 is a configuration diagram when an acceleration sensor 53 is used as a detector.

Next, embodiment of this invention is described as follows.

Embodiment 1

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described using FIGS.

In FIG. 1, the vehicle 1 is connected to one end of the main wire rope 4, and the counterweight 3 is connected to the other end of the main wire rope 4. A part of this main wire rope 4 is wound around the drive sheave of the hoisting machine 2, and the vehicle 1 and the counterweight 3 lift up and down the inside of the hoistway as the drive steel wheel rotates. do. The upper pulley 5 is arranged in the upper part of the hoistway or in the machine room installed on the hoistway. Further, a lower pulley 6 is disposed below the hoistway, and an endless looped rope 7 extends to the upper pulley 5 and the lower pulley 6. Since the lower pulley 6 is further suspended, the rope 7 is suspended in tension. Moreover, since one part of the rope 7 is connected to the vehicle 1, the upper pulley 5 and the lower pulley 6 rotate with the elevation of the vehicle 1.

The upper pulley 5 is equipped with an encoder 8 having two outputs, and the encoder 8 detects rotation of the upper pulley 5 and outputs a pulse signal. Since the upper pulley 5 rotates with the lifting and lowering of the vehicle 1, the encoder 8 is a detector that detects a physical quantity that changes with the lifting and lowering of the vehicle 1. The output signal from the encoder 8 is a signal that changes in response to the speed of the vehicle 1.

In the processing unit 100 of the governor, the first microcomputer 9, the second microcomputer 10, the first microcomputer monitoring device 11, the second microcomputer monitoring device 12, and the AND circuits 13 and 15 are provided. It is installed.

The first output signal of the encoder 8 is input to the first microcomputer 9, and the first microcomputer 9 calculates the speed of the vehicle 1 from this first output signal. The second output signal of the encoder 8 is input to the second microcomputer 10, and the second microcomputer 10 calculates the speed of the vehicle 1 from this second output signal. The first microcomputer monitoring device 11 monitors the operating state of the first microcomputer 9, and the second microcomputer monitoring device 12 monitors the operating state of the second microcomputer 10. The AND circuit 13 receives the output signal from the first microcomputer 9 and the output signal from the first microcomputer monitoring device 11, and turns off the relay A1 17 when either of the output signals is LO. Block it. The AND circuit 15 receives the output signal from the first microcomputer 9 and the output signal from the second microcomputer monitoring device 12, and when any one of the output signals is LO, relay B1 19. Block it.

The relay A2 18 receives the output signal from the second microcomputer 10 and is cut off when this output signal is LO.

The relay B2 20 receives the output signal from the second microcomputer 10 and is cut off when this output signal is LO.

The vehicle 1 is provided with an emergency stop, which has an actuator 40. The emergency stop is activated by operating the actuator 40.

The power supply 200 normally supplies current from each of the three-phase AC current sources 29 to the respective portions in the processing unit 100, the encoder 8, and the actuator 40 of the emergency stop, and the battery 210 at the time of power failure. Current is supplied to each of the above parts. The battery 210 is normally charged in advance.

2 is a diagram showing a driving circuit of the actuator 40 for emergency stop, which is the upper contact point (점: 24) of the relay B1 (19) and the upper contact point (25) of the relay B2 (20). And coil B 26 of actuator 40. The coil B 26 is normally supplied with power, and since the actuator 40 is excited by this power supply, the emergency stop does not operate. When abnormality occurs, the excitation of the actuator 40 is cut off by the power supply to the actuator 40 cut off, and an emergency stop is operated.

3 is a diagram showing a driving circuit such as the main contactor MC 27 of the motor driving circuit, which is the upper contact 21 of the relay A1 17 and the upper contact 22 of the relay A2 18. ), The contact 23 of the other safety device of the elevator, the main contactor MC 27 of the motor drive circuit, the main contactor drive circuit 28, and the contactor BK 36 for driving the brake of the hoisting machine 2. And a contactor drive circuit 37 for brake driving.

4 is a schematic diagram of a motor drive circuit. The motor drive circuit is connected to the three-phase AC power supply 29 and drives an inverter 31 for driving the contact 30 of the main contactor MC 27 and the motor 32 mounted to the hoisting machine 2. Equipped.

5 is a conceptual diagram showing the internal configuration of the encoder 8, the encoder 8 is a magnetic sensor 33 for detecting the irregularities of the disk 35, the disk 35 is provided with irregularities in a gear shape and outputs a pulse signal; Has 34). The disc 35 is installed in the upper pulley 5, and the disc 35 also rotates by the rotation of the upper pulley 5. The magnetic sensors 33 and 34 detect the unevenness of the master 35 and output a pulse signal. The output signal from this magnetic sensor 33 is input to the first microcomputer 9 as the first output signal. The output signal from the magnetic sensor 34 is also input to the second microcomputer 10 as the second output signal.

FIG. 6 is a diagram illustrating an internal configuration of the first microcomputer 9 and the second microcomputer 10. Inside the first microcomputer 9, a first speed calculating section 41, a first speed determining section 42, and a second speed determining section 43 are provided. The first output signal from the encoder 8 is input to the first speed calculating section 41. The output signal from the first speed calculating section 41 is input to the first speed determining section 42 and the second speed determining section 43. Inside the second microcomputer 10, a second speed calculating section 44, a third speed determining section 45, and a fourth speed determining section 46 are provided.

<Action, movement>

Next, the operation and operation of such a circuit will be described with reference to FIGS. 1 to 6.

First, when the vehicle 1 is raised or lowered, the encoder 8 mounted on the upper pulley 5 outputs a signal corresponding to the speed of the vehicle 1. That is, the magnetic sensors 33 and 34 of the encoder 8 detect the unevenness of the master 35 and output a pulse signal. The first output signal output from the magnetic sensor 33 is input to the first microcomputer 9, and the second output signal output from the magnetic sensor 34 is input to the second microcomputer 10.

The first speed calculating section 41 of the first microcomputer 9 calculates the speed of the vehicle 1 by counting pulses of the first output signal, and outputs a signal representing the detection speed of the vehicle 1 to the first speed plate. It outputs to the front part 42 and the 2nd speed determination part 43. The first speed determination unit 42 determines whether the speed of the vehicle 1 has exceeded a predetermined first or higher speed level, and when the speed of the vehicle 1 has exceeded the first or more speed level, The signal is output to the AND circuit 13. When the signal of LO is input to the AND circuit 13, the relay A1 17 is cut off. As a result, the correlation contact 21 of the relay A1 17 is interrupted | blocked, and electric power supply to the main contactor MC27 and the brake drive contactor BK36 is cut off. And since electric power supply to the inverter 31 is cut off, electric power supply to the hoisting machine 2 is cut off, and an elevator stops. In addition, since the power supply to the brake drive contactor BK 36 is cut off, the brake is operated to stop the elevator quickly.

On the other hand, when the speed of the vehicle 1 does not exceed the first or more speed level, the first speed determination unit 42 always outputs a HI signal to the AND circuit 13, so that the elevator does not stop quickly.

The second speed determining unit 43 of the first microcomputer 9 receives a signal indicating the speed of the vehicle 1 from the first speed calculating unit 41, so that the speed of the vehicle 1 is at least a second predetermined value. It is determined whether the speed level is exceeded. On the other hand, the second abnormal speed level is set to a value higher than the first abnormal speed level. When the speed of the vehicle 1 exceeds the second or more speed level, the second speed determining unit 43 outputs a signal of LO to the AND circuit 15. When the signal of LO is input to the AND circuit 15, the relay B1 19 is cut off. As a result, the upper contact point 24 of the relay B1 19 is cut off, and the feeding of the actuator 40 to the coil B 26 is cut off. As a result, the excitation of the actuator 40 is cut off, and the emergency stop is operated. As a result, the elevator stops suddenly.

On the other hand, when the speed of the vehicle 1 does not exceed the second abnormal speed level, the second speed determining unit 43 always outputs the HI signal to the AND circuit 15, so that the emergency stop does not operate. .

On the other hand, the second microcomputer 10 also receives the second output signal from the encoder 8 and operates similarly to the first microcomputer 10. That is, when the speed of the vehicle 1 exceeds the first or more speed level, the third speed determination unit 45 outputs a signal of LO to the relay A2 18. When the LO signal is input to the relay A2 18, the upper contact 22 of the relay A2 18 is cut off, and power supply to the main contactor MC 27 and the brake drive contactor BK 36 is cut off. . And since electric power supply to the inverter 31 is cut off, electric power supply to the hoisting machine 2 is cut off, and an elevator stops. In addition, since the power supply to the brake drive contactor BK 36 is cut off, the brake is operated to stop the elevator quickly.

In addition, when the speed of the vehicle 1 exceeds the second or more speed level, the fourth speed determination unit 46 outputs a signal of LO to the relay B2 20. When the LO signal is input to the relay B2 20, the upper contact 25 of the relay B2 20 is cut off, and power supply to the coil B 26 of the actuator 40 is cut off. As a result, the excitation of the actuator 40 is broken and the emergency stop is operated. As a result, the elevator stops suddenly.

When the 1st microcomputer 9 congests and falls into the state in which speed determination is impossible, the 1st microcomputer monitoring apparatus 11 outputs the signal of LO. Since the LO signal is input to the AND circuit 13, the relay A1 17 is cut off and the elevator stops suddenly as described above.

When the second microcomputer 10 runs into a state where speed determination is impossible, the second microcomputer monitoring device 12 outputs a signal of LO. Since the LO signal is input to the AND circuit 15, the relay B1 19 is cut off, and the emergency stop is operated as described above, and the elevator suddenly stops.

The governor for elevators in this embodiment provides the following effects. Since the first speed determination unit 42 of the first microcomputer 9 determines whether the speed of the vehicle 1 has exceeded the first or more speed level, there are few cases in which an operation occurs. It is possible to prevent malfunction.

Further, the first microcomputer 9 determines whether the speed of the vehicle 1 has exceeded the first or more speed level, and whether the speed of the vehicle 1 has exceeded the second or more speed level. Since it is made, the stop operation | movement of two steps of elevators can be performed.

Moreover, the 1st microcomputer monitoring apparatus 11 has the 1st microcomputer monitoring apparatus 11 which monitors the operation state of the 1st microcomputer 9, and the 1st microcomputer 9 is in the state in which speed determination is impossible. When it judges, since the vehicle 1 is made to stop, the safety of a governor can be improved.

In addition, the first and second two microcomputers 9 and 10 are provided so that the first speed determination section 42 of the first microcomputer 9 sets the speed of the vehicle 1 to the first or more speed level. Since the vehicle 1 is stopped when it is determined that it has passed or when the third speed determination unit 45 of the second microcomputer 10 determines, the reliability of the governor can be improved.

Moreover, since the 2nd microcomputer monitoring apparatus 12 which monitors the operation state of the 2nd microcomputer 10 is provided, the safety | security of a governor can be improved further.

In addition, since the battery 210 backs up the power supply at the time of power failure, the encoder 8, the first microcomputer 9, the second microcomputer 10, and the actuator from the battery 210 also at the time of power failure. (26), the first microcomputer monitoring device 11 and the second microcomputer monitoring device 12 can be operated.

Embodiment 2

In addition to the configuration of Embodiment 1, the configuration shown in FIG. 7 may be added to the first microcomputer 9 and the second microcomputer 10. With this configuration, in the second embodiment, the detection speeds obtained by the calculation by the first microcomputer 9 and the second microcomputer 10 are compared, and if there is a discrepancy in the two detection speeds, the relay is considered abnormal. Block (17 or 19).

In FIG. 7, the first microcomputer 9 has a first comparison unit 47, a first deviation determination unit 48, and a second deviation determination unit 49. The output signal of the first deviation determination unit 48 is output to the AND circuit 13, and the output signal of the second deviation determination unit 49 is output to the AND circuit 15. The second microcomputer 10 has a second comparing unit 50, a third deviation determining unit 51, and a fourth deviation determining unit 52. The output signal of the third deviation determination unit 51 is output to the relay B2 20, and the output signal of the fourth deviation determination unit 52 is output to the relay A2 18.

Next, the operation will be described.

The output signal from the first speed calculating section 41 and the output signal from the second speed calculating section 44 are input to the first comparing section 47. The output signal from the first speed calculating section 41 and the output signal from the second speed calculating section 44 are signals indicating the detection speed of the vehicle 1. In the first comparator 47, the speed of the vehicle 1 calculated by the first speed calculator 41 is compared with the speed of the vehicle 1 calculated by the second speed calculator 44. Output the absolute value of the deviation. The first deviation determining unit 48 outputs a signal of LO to the AND circuit 13 when the absolute value of the speed deviation is larger than the first predetermined deviation amount. When the LO signal is input to the AND circuit 13, the relay A1 17 is cut off, and as a result, power supply to the main contactor MC 27 and the brake drive contactor BK 36 is cut off. Since the power supply to the inverter 31 is cut off, the power supply to the hoisting machine 2 is cut off and the elevator stops. In addition, since the power supply to the brake drive contactor BK 36 is cut off, the brake is operated to stop the elevator quickly.

The second deviation determining unit 49 outputs the LO signal to the AND circuit 15 when the absolute value of the speed deviation is larger than the preset second deviation amount. This second deviation amount is a value larger than the first deviation amount. When the signal of LO is input to the AND circuit 15, the relay B1 19 is cut off and emergency stop is activated. As a result, the elevator stops suddenly.

The second comparator 50 also operates in the same manner as the first comparator 47 to output the absolute value of the deviation of the speed. The third deviation determining unit 51 outputs a signal of LO to the relay A2 18 when the absolute value of the speed deviation is larger than the first deviation amount. As a result, the upper contact 22 of the relay A2 18 is cut off, and power supply to the main contactor MC 27 and the brake drive contactor BK 36 is cut off. And power supply to the hoisting machine 2 is cut | disconnected by the power supply to the inverter 31 being cut off, and an elevator stops. In addition, since the power supply to the brake drive contactor BK 36 is cut off, the brake is operated to stop the elevator quickly.

The fourth deviation determining unit 52 outputs a signal of LO to the relay A2 20 when the absolute value of the speed deviation is larger than the second deviation amount. As a result, the emergency stop is activated.

The absolute value of the speed of the vehicle 1 calculated by the first speed calculating section 41 and the speed and the deviation of the vehicle 1 calculated by the second speed calculating section 44 are smaller than the first deviation amount. In this case, the first to fourth deviation determination units 48, 49, 51, 52 output a signal of HI. Therefore, the elevator is operated as usual.

The governor for elevators of this embodiment provides the following effects.

The first microcomputer 9 receives the output signal from the second speed calculating section 44 and uses the speed of the vehicle 1 calculated by the first speed calculating section 41 and the second speed calculating section 44. Since the first deviation determining unit 48 determines whether or not the calculated deviation from the speed of the vehicle 1 exceeds the first deviation amount, the reliability of the governor can be improved.

In addition, the first microcomputer 9 has a second deviation determining unit 49, and is calculated by the speed of the vehicle 1 calculated by the first speed calculating unit 41 and the second speed calculating unit 44. Since it is determined whether or not the deviation from the speed of the vehicle 1 has exceeded the second deviation amount, the elevator can be stopped in two steps.

Since the second microcomputer 10 also has a third deviation determining unit 51 and a fourth deviation determining unit 52, it is necessary to stop the elevator even when the first microcomputer 9 is not operated. It is possible.

Embodiment 3

In the above embodiment, the programs of the first microcomputer 9 and the second microcomputer 10 may be written to a device that cannot be renewed, for example, a ROM. This makes it possible to avoid changing the program for some reason, leading to unsafe operation.

Embodiment 4

In the said embodiment, although the encoder 8 was used for the detection of the speed of the vehicle 1, you may make it calculate the speed by an acceleration sensor.

8 is a configuration diagram when an acceleration sensor is used.

An acceleration sensor 53 is mounted on the ceiling of the vehicle 1, and the first speed calculating unit 41 and the second speed calculating unit 44 each have an acceleration signal calculating unit 54 and an integrator 55.

The acceleration sensor 53 detects the acceleration of the vehicle 1 and outputs a signal corresponding to the acceleration of the vehicle 1. The acceleration sensor 53 is a detector that detects a physical quantity in which the acceleration of the vehicle 1 changes with the elevation of the vehicle 1. Since the other structure is the same as that of embodiment mentioned above, description is abbreviate | omitted.

The acceleration signal calculation unit 54 obtains an output signal from the acceleration sensor 53 and calculates the acceleration. The integrator 55 integrates the acceleration calculated by the acceleration signal calculation unit 54 and outputs the speed of the vehicle 1. Subsequent processing is the same as that of embodiment mentioned above.

The governor of the present invention can improve accuracy without sacrificing safety.

As mentioned above, this invention is applied to an elevator as an electronic governor.

Claims (11)

delete A detector for detecting a physical quantity that changes with the elevation of the vehicle in the elevator, A first speed calculating unit calculating the speed of the vehicle and a speed determining unit of the vehicle calculated by the first speed calculating unit based on a signal output from the detector, and determining whether or not the speed exceeds a preset first speed level. A first microcomputer having a first speed judging section, A first monitoring device for monitoring an operating state of the first microcomputer, When the first speed determining unit determines that the speed of the vehicle has exceeded the first speed level, or when the first monitoring device determines that the first microcomputer is in a state in which speed determination is impossible, the vehicle Elevator governor, characterized in that for stopping. A first detector and a second detector for detecting a physical quantity that changes with the elevation of the vehicle of the elevator; On the basis of the signal output from the first detector, it is determined whether the first speed calculating section for calculating the speed of the vehicle and the speed of the vehicle calculated by the first speed calculating section exceed a preset first speed level. A first microcomputer having a first speed judging section, On the basis of the signal output from the second detector, it is determined whether or not the speed of the vehicle calculated by the second speed calculating section calculating the speed of the vehicle and the second speed calculating section exceeds a first predetermined speed level. And a second microcomputer having a third speed judging section, The vehicle when the first speed determination unit determines that the speed of the vehicle has exceeded the first speed level, or when the third speed determination unit determines that the speed of the vehicle has exceeded the first speed level. Elevator governor, characterized in that for stopping. delete A first detector and a second detector for detecting a physical quantity that changes with the elevation of the vehicle in the elevator, A first microcomputer having a first speed calculating section for calculating a speed of the vehicle based on a signal output from the first detector; A second microcomputer having a second speed calculating section for calculating a speed of the vehicle based on a signal output from the second detector, The first microcomputer determines whether the deviation between the speed of the vehicle calculated by the first speed calculating unit and the speed of the vehicle calculated by the second speed calculating unit exceeds a preset value. Has a deviation determination unit, An elevator governor is stopped based on the determination result of the said 1st deviation determination part. The method of claim 5, And the second microcomputer determines whether a deviation between the speed of the vehicle calculated by the first speed calculating unit and the speed of the vehicle calculated by the second speed calculating unit exceeds a preset value. Has a deviation determination unit, An elevator governor is stopped based on a determination result of the third deviation determining unit. delete The method according to any one of claims 2, 3, 5 or 6, An elevator governor comprising a battery for feeding the detector and the microcomputer in case of power failure. The method according to any one of claims 2, 3, 5 or 6, An elevator governor is stopped by interrupting the power supply to the hoist of the vehicle. The method according to any one of claims 2, 3, 5 or 6, An elevator governor is stopped by operating the emergency stop of the vehicle. The method according to any one of claims 2, 3, 5 or 6, The detector is an elevator governor, characterized in that the encoder or the acceleration sensor.

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