Elevator brake release power supply system, elevator and control method

Abstract

The present invention discloses an elevator brake releasing power supply system, an elevator and a control method. In the elevator brake releasing power supply system, a rescue speed selection module responds to a speed selection operation and outputs a speed selection signal. The detection control module determines the rescue speed based on the received speed selection signal, so as to output a star-lock release instruction to the star-lock processing module to disable the star-lock signal of the elevator system when receiving a brake release button operation signal, and output a brake signal to the brake power supply. The brake power supply drives the brake device to release the brake so that the elevator car is leveled at the rescue speed, so that the rescue speed can be selected during emergency rescue, and the car can be controlled to quickly slide and level at a suitable faster speed, thereby improving the rescue speed and alleviating the emotions of passengers waiting for rescue in the car. In addition, improving the rescue speed can shorten the power supply time of the backup battery, reduce the risk of rescue failure due to insufficient battery capacity, eliminate the need for large-capacity battery support and intensive battery inspection, and reduce costs.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of elevators, and in particular to an elevator brake release power supply system, an elevator, and a control method. Background Art

[0002] In order to meet the safety and emergency rescue needs in abnormal situations, elevators are usually equipped with a brake system to engage the brake in abnormal situations and release the brake in emergency rescue to level the car and then rescue.

[0003] At present, under abnormal circumstances, the elevator brakes and the three-phase input of the motor is locked through the star-locking contactor. After the brake is released, the motor blocks the torque under the star-locking effect, and the car slides to the level under the action of gravity. Due to the star-locking effect, the car usually slides to the level at a relatively low speed (usually less than 0.05m / s). On the one hand, the slow sliding speed affects the mood of the passengers in the car. On the other hand, the slow sliding speed prolongs the power supply time of the brake coil, and the capacity of the backup battery is high. When the backup battery capacity is insufficient, the risk of rescue failure increases. It is necessary to strengthen the capacity inspection of the backup battery to replace the backup battery with insufficient capacity, which is costly. Summary of the Invention

[0004] The embodiments of the present invention provide an elevator brake release power supply system, an elevator, and a control method to solve the problems of the current elevator brake release power supply system, such as the slow car sliding speed affecting passengers' emotions during rescue, and the high capacity requirements of the backup battery leading to high rescue failure risks and costs.

[0005] In a first aspect, an embodiment of the present invention provides an elevator brake release power supply system, including a mains power supply, a backup battery, a detection control module, a brake power supply for powering the elevator's brake device, a system power supply, a rescue speed selection module, a button operation module, a star-sealing processing module, and a star-sealing contactor, wherein the backup battery is respectively connected to the mains power supply, the detection control module, the brake power supply, and the system power supply, and the detection control module is respectively connected to the mains power supply, the backup battery, the button operation module, the brake power supply, and the rescue speed selection module;

[0006] The detection control module is used to:

[0007] When an abnormality in the mains power is detected, if a system power button operation signal output by the button operation module is received, the system power supply is controlled;

[0008] receiving a speed selection signal output by the rescue speed selection module in response to a speed selection operation of a user, and determining a rescue speed based on the speed selection signal;

[0009] If the button operation module receives the release button operation signal, it outputs a star-blocking release instruction to the star-blocking processing module, and the star-blocking processing module disables the elevator system's star-blocking signal when receiving the star-blocking release instruction;

[0010] Output a release signal to the brake power supply. When receiving the release signal, the brake power supply supplies power and drives the star-sealing contactor to disconnect, and drives the brake device to release so that the elevator car is leveled at the rescue speed.

[0011] Optionally, it further includes a speed detection module and a current detection module, both of which are connected to the detection control module;

[0012] The speed detection module is used to detect the sliding speed of the elevator car;

[0013] The current detection module is used to detect the real-time current of the brake device;

[0014] The detection control module is further configured to output a release signal to the brake power supply based on the sliding speed and the real-time current, so as to perform PID control on the brake power supply to control the sliding speed of the elevator car to be equal to the rescue speed.

[0015] Optionally, an inverter module connected to the brake power supply is further included, the input end of the inverter module is connected to the brake power supply, the output end of the inverter module is connected to the input end of the motor, and the detection control module is further used to:

[0016] After receiving the brake release signal for a preset time, if the sliding speed is 0, the elevator car is determined to be in a balanced load state;

[0017] The inverter module is controlled to drive the motor to rotate.

[0018] Optionally, a leveling sensor is further included, and the leveling sensor is connected to the detection control module;

[0019] The leveling sensor is used to output a leveling signal to the detection control module when detecting that the elevator car is level;

[0020] The detection control module is used to control the brake power supply to stop working when receiving the leveling signal, and the brake device is powered off and braked.

[0021] Optionally, a buzzer is further included, which is connected to the leveling sensor. The leveling sensor is also used to drive the buzzer when detecting that the elevator car is level.

[0022] Optionally, a direction detection module connected to the detection control module is further included, and the direction detection module is used to detect the movement direction of the elevator car.

[0023] Optionally, the detection control module is further configured to:

[0024] When the rescue stop signal output by the button operation module is received, the brake power supply is controlled to stop working.

[0025] In a second aspect, an embodiment of the present invention provides an elevator, which includes a brake device, a motor, and an elevator brake release power supply system as described in any one of the first aspects, wherein the brake power supply in the elevator brake release power supply system is connected to the brake device, and the motor is used to drive the elevator car to move.

[0026] In a third aspect, an embodiment of the present invention provides an elevator brake release power supply control method, which is applied to the elevator brake release power supply system according to any one of the first aspects, comprising:

[0027] When an abnormality in the mains power is detected, if a system power supply button operation signal is received from the button operation module, the system power supply is controlled;

[0028] receiving a speed selection signal output by the rescue speed selection module in response to a speed selection operation of the user, and determining a rescue speed based on the speed selection signal;

[0029] If the button operation module receives the release button operation signal, it outputs the star-blocking release instruction to the star-blocking processing module. The star-blocking processing module disables the elevator system's star-blocking signal when receiving the star-blocking release instruction.

[0030] The brake release signal is output to the brake power supply. When the brake power supply receives the brake release signal, it supplies power to drive the star-sealing contactor to disconnect and drive the brake device to release so that the elevator car reaches the floor at the rescue speed.

[0031] Optionally, output a release signal to the brake power supply, including:

[0032] Detect the sliding speed of the elevator car;

[0033] Detect the real-time current of the brake device;

[0034] Based on the sliding speed and real-time current, a release signal is output to the brake power supply to perform PID control on the brake power supply to control the sliding speed of the elevator car to be equal to the rescue speed.

[0035] The elevator brake release power supply system of this embodiment is provided with a rescue speed selection module. When the system is powered by the backup battery when the mains power is abnormal, the rescue speed selection module responds to the speed selection operation and outputs a speed selection signal. The detection control module determines the rescue speed based on the speed selection signal, so that when the brake release button operation signal is received, the star-locking release instruction is output to the star-locking processing module. The star-locking processing module disables the star-locking signal of the elevator system when receiving the star-locking release instruction. When outputting the brake signal to the brake power supply, the brake power supply supplies power and drives the star-locking contactor to disconnect when receiving the brake release signal, and drives the brake device to release so that the elevator car is leveled at the rescue speed. The rescue speed can be selected during emergency rescue, and the car can be quickly controlled to slide and level at a suitable faster speed, thereby improving the rescue speed and alleviating the emotions of passengers waiting for rescue in the car. Furthermore, the improvement of the rescue speed can shorten the power supply time of the backup battery, reduce the risk of rescue failure due to insufficient battery capacity, and does not require large-capacity battery support and intensive battery inspections, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of an elevator brake release power supply system provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of an elevator brake release power supply system provided by another embodiment of the present invention;

[0038] Figure 3 The present invention provides a flowchart of an elevator brake release power supply control method. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0040] Figure 1 This is a structural schematic diagram of an elevator brake release power supply provided in an embodiment of the present invention. The elevator brake release power supply system of this embodiment is used to supply power when the elevator is abnormal to achieve emergency braking and electric brake release after emergency braking for rescue. For example, when the mains power is abnormal (such as undervoltage or power outage), the power supply to the brake coil of the elevator's brake device is stopped, so that the brake device is braked to prevent the movement of the elevator car. During emergency rescue, the brake coil is powered, so that the elevator car slides to the leveling position under the action of gravity. At the leveling position, rescuers open the hall door and the car door to release the passengers trapped in the car.

[0041] like Figure 1As shown, the elevator brake release power supply system of this embodiment includes a mains power supply 1, a backup battery 2, a detection and control module 3, a brake power supply 4 for powering the brake device of the elevator, a system power supply 5, a rescue speed selection module 6, a button operation module 7, a star-sealing processing module 8 and a star-sealing contactor 9. The backup battery 2 is respectively connected to the mains power supply 1, the detection and control module 3, the brake power supply 4 and the system power supply 5 to power the detection and control module 3, the brake power supply 4 and the system power supply 5 when the mains power is abnormal. The detection and control module 3 is respectively connected to the mains power supply 1, the backup battery 2, the button operation module 7, the brake power supply 4 and the rescue speed selection module 6.

[0042] Among them, the mains power supply 1 can be a circuit module that converts AC mains (AC220V or AC380V) into DC power. The mains power supply 1 can include an AC-DC module and a rectifier, filter, and charging circuit to convert the AC mains power into DC power to power the elevator system and charge the backup battery 2. The backup battery 2 can include a rechargeable battery and its related peripheral circuits. The detection and control module 3 can include a controller and its peripheral circuits (such as a detection circuit for detecting whether the mains power is abnormal). The brake power supply 4 can include a transformer and a rectifier and filter module to boost the backup battery 2 to a high-frequency voltage and then rectify and filter it to output it to the brake device. The system power supply 5 can be a module that supplies power to the elevator's main control board, indicator lights, etc. The system power supply 5 can also include a rectifier and filter circuit to rectify and filter the current and voltage output by the backup battery 2 and then power the elevator's main control board, indicator lights, call board, buzzer, and other electrical components through the system power supply port.

[0043] The rescue speed selection module 6 is used to provide multiple rescue speeds for rescue personnel to choose from. In this embodiment, the rescue speed refers to the sliding speed of the elevator car. In one embodiment, the rescue speed selection module 6 may include multiple mechanical selection switches or speed selection gears. Rescuers can select the rescue speed through the mechanical selection switches or speed selection gears. In another embodiment, the rescue speed selection module 6 may include a touch display screen, which displays multiple rescue speeds. Rescuers can select the rescue speed through touch operations on the touch display screen.

[0044] The button operation module 7 may include a system power button and a release button. The system power button is used to control the system power supply 5 to power on or off the system power supply port. The release button is used to control the brake power supply 4 to power on or off the brake device. The star-sealing processing module 8 is used to receive the system star-sealing signal from the elevator system and drive the star-sealing contactor 9 to close, so that the three-phase line of the motor is short-circuited to achieve star-sealing.

[0045] like Figure 1As shown, when the mains power is abnormal, the brake power supply 4 stops supplying power to the brake device due to the mains power failure, the brake coil of the brake device loses power, the brake device engages, and the elevator car stops moving. At the same time, the star-locking processing module 8 receives the system star-locking signal, and the star-locking contactor 9 closes to achieve star-locking.

[0046] When the mains power is abnormal and the emergency rescue stage begins, the backup battery 2 supplies power to the brake power supply 4, system power supply 5, detection and control module 3, rescue speed selection module 6, button operation module 7, star-sealing processing module 8 and star-sealing contactor 9. The rescuer can first press the system power button on the button operation module 7. The detection and control module 3 can receive the system power supply button operation signal output by the button operation module 7. The detection and control module 3 controls the system power supply 5 to supply power to the system power supply port. The elevator's main control board, direction sensor, etc. can work normally after being powered on. After the rescuer selects the rescue speed on the rescue speed selection module 6, the rescue speed selection module 6 outputs a speed selection signal to the detection and control module 3. The detection and control module 3 analyzes the speed selection signal to determine the rescue speed. When the rescuer presses the release button on the button operation module 7, the button operation module 7 outputs a release signal to the detection and control module 3 and outputs a release star-lock instruction to the star-lock processing module 8. The star-lock processing module 8 disables the system star-lock signal and no longer processes the star-lock signal output by the elevator system. After receiving the release signal, the detection and control module 3 controls the brake power supply 4 to output voltage and current. The brake power supply 4 also supplies power to the coil of the star-lock contactor 9. The star-lock contactor 9 is disconnected to release the star-lock. After the brake power supply 4 outputs voltage and current, the brake coil in the brake device is energized, and the brake device is released, allowing the elevator car to slide to the leveling position at the set rescue speed. For example, the detection and control module 3 can control the duty cycle of the switch tube in the electronic transformer of the brake power supply 4 to adjust the current I passing through the brake coil to control the speed of the elevator car to be equal to the rescue speed.

[0047] The elevator brake release power supply system of this embodiment is provided with a rescue speed selection module. When the system is powered by the backup battery when the mains power is abnormal, the rescue speed selection module outputs a speed selection signal in response to the speed selection operation. The detection control module determines the rescue speed based on the speed selection signal, so that when the brake release button operation signal is received, the star-locking release instruction is output to the star-locking processing module. The star-locking processing module disables the star-locking signal of the elevator system when receiving the star-locking release instruction. When the brake signal is output to the brake power supply, the brake power supply drives the star-locking contactor to disconnect when receiving the brake release signal, and drives the brake device to release so that the elevator car is leveled at the rescue speed. The rescue speed can be selected during emergency rescue, and the car can be quickly controlled to slide and level at a suitable faster speed, thereby improving the rescue speed and alleviating the emotions of passengers waiting for rescue in the car. Furthermore, the improvement of the rescue speed can shorten the power supply time of the backup battery, reduce the risk of rescue failure due to insufficient battery capacity, and do not require large-capacity battery support and intensive battery inspections, thereby reducing costs.

[0048] like Figure 2 As shown, in another embodiment, the elevator brake release power supply system further includes a speed detection module 10 and a current detection module 11, and the speed detection module 10 and the current detection module 11 are both connected to the detection control module 3, wherein the speed detection module 10 can be a rotary encoder of the motor in the elevator, and the speed detection module 10 is used to detect the sliding speed of the elevator car. The current detection module 11 can be a current sampling circuit of the brake coil, which is used to detect the real-time current of the brake device. The speed detection module 10 and the current detection module 11 respectively send the sliding speed of the elevator car and the real-time current of the brake coil to the detection control module 3. The detection control module 3 is also used to output a release signal to the brake power supply 4 based on the sliding speed and the real-time current, so as to perform PID (proportional-integral-derivative control) control on the brake power supply 4 to control the sliding speed of the elevator car to be equal to the rescue speed.

[0049] Specifically in this embodiment, the detected slipping speed is used as the feedback quantity, and the speed difference is obtained by comparing the feedback quantity with the rescue speed. The transformer in the brake power supply 4 is controlled by the speed difference and the real-time current to increase or decrease the output current of the brake power supply 4 so that the output current matches the slipping speed of the elevator car, and finally the slipping speed is equal to the rescue speed. For details, please refer to the PID algorithm and will not be described in detail here.

[0050] This embodiment detects the sliding speed of the elevator car through the speed detection module, and detects the real-time current output by the brake power supply 4 through the current detection module. The brake power supply 4 is PID controlled according to the sliding speed and the real-time current, thereby ensuring that the elevator car slides to the leveling position at a stable rescue speed, thereby improving the sliding stability of the elevator car during emergency rescue.

[0051] In one embodiment, the device further includes an inverter module connected to the brake power supply 4, wherein the input of the inverter module is connected to the brake power supply 4, and the output of the inverter module is connected to the input of the motor. The inverter module can be a module that converts direct current into alternating current, such as various DC-AC modules. The detection and control module 3 is further configured to, after receiving the brake release signal for a preset duration, determine that the elevator car is in a balanced load state if the sliding speed is zero, and control the inverter module to drive the motor to rotate.

[0052] Specifically, if after a preset time (such as 2 seconds or 5 seconds) after receiving the release signal, the speed detection module 10 detects that the slipping speed of the elevator car is 0, indicating that the elevator car is in a balanced load state, and the elevator car cannot be rescued by slipping under the action of gravity, the detection control module 3 can control the operation of the inverter module, drive the motor to rotate through the inverter module, and drive the car to move by the motor to break the balanced state of the elevator car, thereby realizing emergency rescue when the elevator car is in a balanced load state, and improving the success rate of emergency rescue under various working conditions.

[0053] In another optional embodiment, the elevator brake release power supply system also includes a leveling sensor 12, which is connected to the detection control module 3. Exemplarily, the leveling sensor 12 can be a leveling switch, a photoelectric sensor, etc., to output a leveling signal to the detection control module 3 when the elevator car reaches the leveling position. When receiving the leveling signal, the detection control module 3 controls the brake power supply 4 to stop working, the brake power supply 4 stops outputting voltage and current, and the brake coil in the brake device loses power to achieve braking. The elevator car stops moving after leveling, and rescue personnel can go to the leveling position to open the hall door and the car door to release the trapped passengers in the car, thereby realizing automatic braking when the elevator car is leveled, thereby improving the degree of automation of emergency rescue.

[0054] Furthermore, the elevator brake release power supply system may also include a buzzer, which is connected to a leveling sensor. The leveling sensor is also used to drive the buzzer when it detects that the elevator car is level, so as to prompt rescuers that the elevator car is level through the sound broadcast by the buzzer. The rescuers release the release button, open the hall door and the car door to release the trapped passengers.

[0055] Optionally, when the detection control module 3 receives the stop rescue signal output by the button operation module 7, it controls the brake power supply 4 to stop working. For example, when the rescuer releases the release button, or when the rescuer releases the system power button and the release button at the same time, the button operation module 7 outputs the stop rescue signal to the detection control module 3, and the detection control module 3 controls the brake power supply 4 to stop outputting voltage and current to control the elevator car to stop moving.

[0056] This embodiment also includes a direction detection module 13 connected to the detection control module 3. The direction detection module 13 is used to detect the movement direction of the elevator car. Exemplarily, the direction detection module 13 can be a module for detecting the rotation direction of the motor's rotary encoder to determine the movement direction of the elevator car. The direction detection module 13 can be used to detect the movement direction of the car.

[0057] An embodiment of the present invention also provides an elevator, which includes a brake device, a motor and an elevator brake release power supply system according to an embodiment of the present invention. The brake power supply in the elevator brake release power supply system is connected to the brake device, and the motor is used to drive the elevator car to move.

[0058] Figure 3 This is a flow chart of an elevator brake release power supply control method provided by an embodiment of the present invention. The elevator brake release power supply control method according to the embodiment of the present invention is applicable to the case where the elevator brake release power supply is controlled during an elevator emergency rescue. The method can be executed by the elevator brake release power supply system according to the embodiment of the present invention, such as Figure 3 As shown, the elevator brake release power supply control method according to the embodiment of the present invention may specifically include the following steps:

[0059] S301 , when a mains power anomaly is detected, if a system power supply button operation signal output by a button operation module is received, the system power supply is controlled.

[0060] like Figure 2 As shown, the elevator brake release power supply system of this embodiment includes a mains power supply 1, a backup battery 2, a detection control module 3, a brake power supply 4 for powering the elevator's brake device, a system power supply 5, a rescue speed selection module 6, a button operation module 7, a star-sealing processing module 8, and a star-sealing contactor 9.

[0061] The detection control module 3 may include a controller and its peripheral circuits (such as a circuit for detecting whether the mains power is abnormal). The detection control module 3 can detect whether the mains power is abnormal such as undervoltage or power failure, and when the mains power is abnormal, the backup battery 2 is switched to supply power.

[0062] The button operation module 7 may include a system power button and a release button. The system power button is used to control the system power 5 to power on or off the system power supply port. When the AC power abnormal braking device is engaged, the rescue personnel can press the system power button at the rescue site. The button operation module 7 outputs the system power button operation signal to the detection control module 3. The detection control module 3 can control the system power 5 to power on the system power supply port to power the elevator's main control board, direction sensor lights and other electronic components through the backup battery 2.

[0063] S302: Receive a speed selection signal output by the rescue speed selection module in response to a speed selection operation of the user, and determine a rescue speed based on the speed selection signal.

[0064] The rescue speed selection module 6 is used to provide multiple rescue speeds for rescuers to choose from. Rescuers can select a rescue speed through the rescue speed selection module 6. The rescue speed selection module 6 responds to the speed selection operation and outputs a speed selection signal to the detection control module 3. The detection control module 3 analyzes the speed selection signal (for example, determines signals of different voltage and current sizes to determine the corresponding rescue speed) to determine the rescue speed.

[0065] S303: If a release button operation signal is received from the button operation module, a star-blocking release instruction is output to the star-blocking processing module. The star-blocking processing module disables the star-blocking signal of the elevator system upon receiving the star-blocking release instruction.

[0066] In this embodiment, the button operation module 7 includes a release button, which is used to control the brake power supply 4 to power on or off the brake device. Specifically, when the rescue personnel press the release button on the button operation module 7, the button operation module 7 outputs a release star-sealing instruction to the star-sealing processing module 8. The star-sealing processing module 8 disables the system star-sealing signal and no longer processes the star-sealing signal output by the elevator system.

[0067] S304: Output a release signal to the brake power supply. When receiving the release signal, the brake power supply supplies power to drive the star-blocking contactor to disconnect, and drives the brake device to release so that the elevator car is leveled at the rescue speed.

[0068] When the rescuer presses the release button on the button operation module 7, the button operation module 7 outputs a release signal to the detection and control module 3. After receiving the release signal, the detection and control module 3 controls the brake power supply 4 to output voltage and current. The brake power supply 4 also supplies power to the coil of the star-sealing contactor 9. The star-sealing contactor 9 is disconnected to release the star. After the brake power supply 4 outputs voltage and current, the brake coil in the brake device is energized, and the brake device is released. Since the star is released, the effect of the star-sealing locking torque disappears. The current passing through the brake coil can adjust the brake braking force to control the sliding speed of the elevator car, so that the elevator car slides to the leveling position at the set rescue speed. For example, the detection and control module 3 can control the duty cycle of the switching tube in the electronic transformer of the brake power supply 4 to adjust the current I passing through the brake coil to control the speed of the elevator car to be equal to the rescue speed.

[0069] Optionally, the sliding speed of the elevator car and the real-time current of the brake device can be detected, and a release signal can be output to the brake power supply based on the sliding speed and the real-time current to perform PID control on the brake power supply to control the sliding speed of the elevator car to be equal to the rescue speed.

[0070] Specifically, such as Figure 2 As shown, the elevator brake release power supply system also includes a speed detection module 10 and a current detection module 11. The speed detection module 10 and the current detection module 11 are both connected to the detection control module 3. The speed detection module 10 is used to detect the sliding speed of the elevator car, and the current detection module 11 is used to detect the real-time current of the brake device. The speed detection module 10 and the current detection module 11 respectively send the sliding speed of the elevator car and the real-time current of the brake coil to the detection control module 3. The detection control module 3 outputs a release signal to the brake power supply 4 based on the sliding speed and the real-time current to perform PID (proportional-integral-derivative control) control on the brake power supply 4 to control the sliding speed of the elevator car to be equal to the rescue speed.

[0071] Optionally, when receiving the leveling signal, the brake power supply is controlled to stop working, and the brake device is powered off and braked. Specifically, Figure 2 As shown, the elevator brake release power supply system also includes a leveling sensor 12, which is connected to the detection control module 3. When the detection control module 3 receives the leveling signal, it controls the brake power supply 4 to stop working, and the brake power supply 4 stops outputting voltage and current. The brake coil in the brake device loses power to realize braking. The elevator car stops moving after leveling. Rescuers can go to the leveling position to open the hall door and the car door to release the trapped passengers in the car, realizing automatic braking when the elevator car is leveled, thereby improving the degree of automation of emergency rescue.

[0072] Optionally, it also includes: after receiving the release signal for a preset time, if the slipping speed is 0, it is determined that the elevator car is in a balanced load state, and the inverter module is controlled to drive the motor to rotate. Specifically, if the speed detection module 10 detects that the slipping speed of the elevator car is 0 after a preset time (such as 2 seconds or 5 seconds) after receiving the release signal, it indicates that the elevator car is in a balanced load state, and the elevator car cannot achieve slipping rescue under the action of gravity. The detection control module 3 can control the inverter module to work, and drive the motor to rotate through the inverter module. The motor determines that the car movement breaks the balanced state of the elevator car, so as to achieve emergency rescue in the balanced load state of the elevator car.

[0073] It should be noted that, for the method embodiment, since it is basically similar to the elevator brake release power supply system embodiment, the description is relatively simple. For relevant details, please refer to the partial description of the elevator brake release power supply system embodiment.

[0074] The elevator brake release power supply control method of this embodiment is as follows: after the elevator brake release power supply uses a backup battery to power the system when the mains power is abnormal, the rescue speed selection module outputs a speed selection signal in response to the user's speed selection operation, and determines the rescue speed based on the speed selection signal, so as to output a star-lock release instruction to the star-lock processing module when receiving the brake release button operation signal. The star-lock processing module disables the star-lock signal of the elevator system when receiving the star-lock release instruction, and outputs a brake signal to the brake power supply. When receiving the brake release signal, the brake power supply powers the star-lock contactor to disconnect and drives the brake device to release so that the elevator car is leveled at the rescue speed. This realizes that the rescue speed can be selected during emergency rescue, and a suitable faster speed can be selected to control the car to quickly slide and level, thereby improving the rescue speed and alleviating the emotions of passengers waiting for rescue in the car. Furthermore, the improvement in the rescue speed can shorten the power supply time of the backup battery, reduce the risk of rescue failure due to insufficient battery capacity, and does not require large-capacity battery support and intensive battery inspections, thereby reducing costs.

[0075] Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general-purpose hardware. Of course, it can also be implemented with hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the existing technology, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the elevator brake release power supply control method of each embodiment of the present invention.

[0076] It is worth noting that in the above-mentioned embodiment of the elevator brake release power supply system, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0077] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An elevator brake release power supply system, characterized in that: It includes a mains power supply, a backup battery, a detection and control module, a brake power supply for powering the brake device of the elevator, a system power supply, a rescue speed selection module, a button operation module, a star-sealing processing module and a star-sealing contactor. The backup battery is respectively connected to the mains power supply, the detection and control module, the brake power supply and the system power supply. The detection and control module is respectively connected to the mains power supply, the backup battery, the button operation module, the brake power supply and the rescue speed selection module; The detection control module is used to: When an abnormality in the mains power is detected, if a system power button operation signal output by the button operation module is received, the system power supply is controlled; receiving a speed selection signal output by the rescue speed selection module in response to a speed selection operation of a user, and determining a rescue speed based on the speed selection signal; If the button operation module receives the release button operation signal, it outputs a star-blocking release instruction to the star-blocking processing module, and the star-blocking processing module disables the elevator system's star-blocking signal when receiving the star-blocking release instruction; Output a release signal to the brake power supply. When receiving the release signal, the brake power supply supplies power and drives the star-sealing contactor to disconnect, and drives the brake device to release so that the elevator car is leveled at the rescue speed.

2. The elevator brake release power supply system according to claim 1, characterized in that: It also includes a speed detection module and a current detection module, both of which are connected to the detection control module; The speed detection module is used to detect the sliding speed of the elevator car; The current detection module is used to detect the real-time current of the brake device; The detection control module is further configured to output a release signal to the brake power supply based on the sliding speed and the real-time current, so as to perform PID control on the brake power supply to control the sliding speed of the elevator car to be equal to the rescue speed.

3. The elevator brake release power supply system according to claim 2, characterized in that: It also includes an inverter module connected to the brake power supply, the input end of the inverter module is connected to the brake power supply, the output end of the inverter module is connected to the input end of the motor, and the detection control module is further used to: After receiving the brake release signal for a preset time, if the sliding speed is 0, the elevator car is determined to be in a balanced load state; The inverter module is controlled to drive the motor to rotate.

4. The elevator brake release power supply system according to claim 3, characterized in that: It also includes a leveling sensor, which is connected to the detection control module; The leveling sensor is used to output a leveling signal to the detection control module when detecting that the elevator car is level; The detection control module is used to control the brake power supply to stop working when receiving the leveling signal, and the brake device is powered off and braked.

5. The elevator brake release power supply system according to claim 4, characterized in that: It also includes a buzzer, which is connected to the leveling sensor. The leveling sensor is also used to drive the buzzer when it detects that the elevator car is level.

6. The elevator brake release power supply system according to any one of claims 1 to 5, characterized in that: It also includes a direction detection module connected to the detection control module, and the direction detection module is used to detect the movement direction of the elevator car.

7. The elevator brake release power supply system according to any one of claims 1 to 5, characterized in that: The detection control module is also used for: When the rescue stop signal output by the button operation module is received, the brake power supply is controlled to stop working.

8. An elevator, characterized in that: The elevator includes a brake device, a motor and the elevator brake release power supply system according to any one of claims 1 to 7, wherein the brake power supply in the elevator brake release power supply system is connected to the brake device, and the motor is used to drive the elevator car to move.

9. A method for controlling the power supply of an elevator brake release, characterized in that: The elevator brake release power supply system according to any one of claims 1 to 7 comprises: When an abnormality in the mains power is detected, if a system power supply button operation signal is received from the button operation module, the system power supply is controlled; receiving a speed selection signal output by the rescue speed selection module in response to a speed selection operation of the user, and determining a rescue speed based on the speed selection signal; If the button operation module receives the release button operation signal, it outputs the star-blocking release instruction to the star-blocking processing module. The star-blocking processing module disables the elevator system's star-blocking signal when receiving the star-blocking release instruction. The brake release signal is output to the brake power supply. When the brake power supply receives the brake release signal, it supplies power to drive the star-sealing contactor to disconnect and drive the brake device to release so that the elevator car reaches the floor at the rescue speed.

10. The elevator brake release power supply control method according to claim 9, characterized in that: Output release signal to brake power supply, including: Detect the sliding speed of the elevator car; Detect the real-time current of the brake device; Based on the sliding speed and real-time current, a release signal is output to the brake power supply to perform PID control on the brake power supply to control the sliding speed of the elevator car to be equal to the rescue speed.

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