Control device, elevator and control method

Abstract

A control device (100), an elevator (1000) and a control method. The control device (100) comprises a first control module (10) and a second control module (20), wherein the first control module (10) comprises a first controller (11); and a plurality of control circuits (21) of the second control module (20) are connected to the first controller (11), the first controller (11) controls the connection or disconnection of the plurality of control circuits (21), when being connected, the control circuits supply power to corresponding brakes (200), and when the control circuits are deenergized, braking is performed. The control device can shorten an action response time of a brake, such that the brake performs braking in a timely manner.

Description

Control device, elevator, and control method

[0001] Priority information

[0002] This disclosure claims priority and benefits of the patent application with patent application number "202310804752.2" filed with the State Intellectual Property Office of China on June 30, 2023, and incorporates the entire text of it herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of elevator control, and more particularly, to a control device, an elevator, and a control method. Background Art

[0004] At present, vertical lifting equipment such as elevators and freight elevators are braked by holding brakes. However, this braking method requires multiple brake contactors. The brake's braking and release states are controlled by connecting and disconnecting the brake contactors. However, the response time of the brake contactors is long, resulting in untimely braking.

[0005] Summary of the Invention

[0006] Embodiments of the present disclosure provide a control device, an elevator, and a control method.

[0007] A control device according to one embodiment of the present disclosure includes a first control module and a second control module. The first control module includes a first controller; the second control module includes multiple control circuits connected to the first controller. The first controller is configured to control the multiple control circuits to be turned on or off. When the control circuits are turned on, they supply power to corresponding brakes. When the control circuits are turned on, the brakes are configured to apply braking force.

[0008] Another embodiment of the present disclosure discloses an elevator comprising a car, a brake, and a control device, wherein the control device comprises a first control module and a second control module, wherein the first control module comprises a first controller; the second control module comprises a plurality of control circuits connected to the first controller, the first controller being configured to control the plurality of control circuits to be turned on or off, the control circuits being configured to supply power to corresponding brakes when turned on, and the brakes to apply braking when powered off. The brakes are used to brake the car.

[0009] A control method according to one embodiment of the present disclosure is applied to a control device, wherein the control device includes a first control module and a second control module, wherein the first control module includes a first controller, and the second control module includes a plurality of control lines. The control method includes controlling the plurality of control lines to be turned on or off by the first controller, wherein the control lines are configured to supply power to corresponding brakes when turned on, and to brake when powered off.

[0010] The control device, elevator, and control method of the disclosed embodiments include a first control module and a second control module. The first control module includes a first controller, and the second control module includes multiple control circuits connected to the first controller. The first controller is configured to control the conduction and disconnection of the multiple control circuits. When the control circuits are conducted, they can supply power to the corresponding brakes. When the control circuits are disconnected, they no longer supply power to the corresponding brakes. The brakes can brake when powered off, but not when powered on. Compared to controlling the application and release of the brakes by coordinating the conduction and disconnection of multiple brake contactors, which has a longer electrical response time, controlling the application and non-application of the brakes by the first controller can reduce the brake's action response time, ensuring timely application.

[0011] Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0013] FIG1 is a schematic diagram of an elevator scene according to certain embodiments of the present disclosure;

[0014] FIG2 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0015] FIG3 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0016] FIG4 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0017] FIG5 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0018] FIG6 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0019] FIG7 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0020] FIG8 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0021] FIG9 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure;

[0022] FIG10 is a schematic structural diagram of a control device according to certain embodiments of the present disclosure.

[0023] Figure Number:

[0024] Elevator 1000, control device 100, first control module 10, first controller 11, safety circuit 12, fourth switch element 121, first switch element 13, second switch element 14, coil 141 of second switch element, contact 142 of second switch element, voltage sampling point 15, second control module 20, control circuit 21, third switch element 22, converter 24, second controller 25, driver 26, third control module 30, brake 200, car 300, power supply 400. DETAILED DESCRIPTION

[0025] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present disclosure, and should not be understood as limiting the embodiments of the present disclosure.

[0026] At present, for vertical lifting equipment such as elevators 1000 and freight elevators, when the car 300 of the elevator 1000 carries 125% of the rated load and runs downward at the rated speed, the drive main unit should be stopped by the brake 200 alone, or when a fault occurs in the elevator 1000, a structure for braking the brake 200 needs to be installed, for example, by braking in a holding brake manner. However, this braking manner requires multiple holding brake contactors, and the braking and releasing states of the brake 200 are controlled by connecting and disconnecting the holding brake contactors. However, the response time of the holding brake contactor is relatively long, resulting in untimely braking of the brake 200.

[0027] Referring to Figures 1 and 2 , a control device 100 according to one embodiment of the present disclosure includes a first control module 10 and a second control module 20. The first control module 10 includes a first controller 11; the second control module 20 includes a plurality of control lines 21 connected to the first controller 11. The first controller 11 is configured to control the plurality of control lines 21 to be turned on or off. When the control lines 21 are turned on, they are configured to supply power to the corresponding brakes 200. When the control lines 21 are turned on, the brakes 200 are configured to brake.

[0028] Among them, the brake 200 can be a bidirectional thrust elevator brake. When the brake 200 is energized, it generates bidirectional electromagnetic thrust, which causes the brake 200 to be separated from the car 300. When the power is off, the electromagnetic force disappears, and under the action of the pressure of the external brake spring, a friction brake 200 with power-off braking is formed. The brake 200 is used to brake the car 300 of the elevator 1000.

[0029] Specifically, the control device 100 includes a first control module 10 and a second control module 20. The first control module 10 is used to control the brake 200 to brake in the event of a malfunction of the elevator 1000, or to control the elevator 1000 to ascend, descend, or stop during normal operation. The second control module 20 is used to control the power on and off of the brake 200.

[0030] The first control module 10 includes a first controller 11. The first controller 11 may be a microcontroller unit (MCU) of the elevator 1000 and serve as a main controller of the elevator 1000. For example, the first controller 11 may control the ascent, descent, and stop of the elevator 1000.

[0031] The second control module 20 includes multiple control lines 21 (for example, the number of control lines 21 may be 1, 2, or 3, etc.), and the control line 21 may be a line for controlling the working state of the brake 200 of the elevator 1000. Multiple control lines 21 can be connected to the first controller 11, so that the first controller 11 can control the multiple control lines 21 to enter a disconnected or connected state respectively. The multiple control lines 21 also need to be connected to the brakes 200 of the elevator 1000. For example, the multiple control lines 21 can be connected to multiple brakes 200, with each control line 21 connected to a brake 200, so that one brake 200 is controlled by one control line 21; or multiple brakes 200 can be connected in series to one control line 21, so that multiple brakes 200 are controlled by one control line 21; or multiple control lines 21 can be connected to one brake 200, so that one brake 200 is controlled by multiple control lines 21. If any control line 21 is disconnected, the brake 200 can still be braked by other brakes 200. Thus, the power supply or de-powering of the brake 200 of the elevator 1000 is controlled by the conduction and disconnection of the control lines 21. For example, when the control line 21 is turned on, the control line 21 can transmit current to the brake 200 of the elevator 1000. At this time, the brake 200 is in a released state. It should be noted that the released state of the brake 200 is that the brake 200 does not brake, and the elevator 1000 can operate normally; when the control line 21 is disconnected, the control line 21 cannot transmit current to the brake 200 of the elevator 1000. At this time, the brake 200 is powered off and is in a braking state. The brake 200 will brake the elevator 1000, causing the elevator 1000 to stop running.

[0032] In this manner, the first control module 10 includes a first controller 11, and the second control module 20 includes multiple control lines 21. The multiple control lines 21 are connected to the first controller 11. The first controller 11 is configured to control the conduction and disconnection of the multiple control lines 21. When the control lines 21 are conducted, they can supply power to the corresponding brake 200. When the control lines 21 are disconnected, they no longer supply power to the corresponding brake 200. The brake 200 can brake when powered off, but not when powered on. Compared to controlling the application and release of the brake 200 by coordinating the conduction and disconnection of multiple brake contactors, which has a longer electrical response time, controlling the application and non-application of the brake 200 by the first controller 11 can reduce the action response time of the brake 200, ensuring timely application of the brake 200.

[0033] Referring to FIG2 , in some embodiments, the first control module 10 further includes a safety circuit 12, a first switch 13, and a second switch 14. The safety circuit 12, the first switch 13, and the second switch 14 are connected in series. A first controller 11 is connected to the first switch 13. The first controller 11 is configured to control the first switch 13 to be turned on or off. When the first switch 13 or the safety circuit 12 is turned off, the second switch 14 is turned off; when both the first switch 13 and the safety circuit 12 are turned on, the second switch 14 is turned on.

[0034] The power supply 400 is connected to the plurality of control circuits 21 through the second switch element 14 , and supplies power to the plurality of control circuits 21 when the second switch element 14 is turned on.

[0035] Specifically, the first control module 10 includes a safety circuit 12, a first switch 13, and a second switch 14. The safety circuit 12 can be a safety circuit installed in the elevator 1000. For example, the safety circuit can be a safety switch installed in each safety component of the elevator 1000, and the installed safety switches are connected in series to jointly control a safety relay. The first switch 13 can be a logic control unit of the elevator 1000, or the first switch 13 can also be a diode or a transistor; the first switch 13 can receive a signal from the first controller 11 and control the conduction and disconnection of the first switch 13 through the signal. For example, the first switch 13 is a diode. When the diode receives a low-level signal from the first controller 11, the diode is in the off state and disconnects the current in the circuit. The second switch element 14 can be a terminal relay or contactor of the elevator 1000 safety circuit. Taking a relay as an example, the second switch element 14 also includes a coil 141 of the second switch element 14 and a contact 142 of the second switch element 14. The coil 141 of the second switch element 14 and the contact 142 of the second switch element 14 are connected in series. The number of second switch elements 14 can be multiple, which is not limited here. The multiple second switch elements 14 are connected in series, and the first controller 11 can control the current output of the power supply 400 based on the status of the second switch elements 14. The safety circuit 12, the first switch element 13, and the coil 141 of the second switch element are connected in series, so that when the safety circuit 12 or the first switch element 13 is disconnected, the second switch element 14 is disconnected, and when both the safety circuit 12 and the first switch element 13 are connected, the second switch element 14 is connected.

[0036] Optionally, when elevator 1000 is in a standby state and unoccupied, a safety check can be performed on second switch 14. For example, when the clock reaches 1:00 a.m., first controller 11 controls the on and off switching of first switch 13 and energizes and deenergizes second switch 14. Thus, first controller 11 monitors the braking state of brake 200 to determine whether second switch 14 is in a normal and controllable state. During the elevator's standby period, second switch 14 remains off, and upon receiving a command to start elevator 1000, remains on. This increases the service life of the second switch and improves the safety of elevator 1000.

[0037] The power supply 400 can be the brake power supply of the elevator 1000. The power supply 400 can be an AC power supply or a DC power supply. The power supply 400 is connected to multiple control lines 21 through the second switch 14, and when the second switch 14 is in the on state, it provides current to the multiple control lines 21, so that the current can be transmitted to the brake 200 of the elevator 1000 through the multiple control lines 21.

[0038] Optionally, when the elevator 1000 needs to stop running, the first controller 11 notifies the power supply 400 to stop supplying power to the control circuit 21 through bus communication (for example, the bus communication can be UART protocol, SPI protocol, CAN protocol, etc.). In this way, the use of a brake contactor to stop supplying power to the control circuit 21 can be avoided, thereby avoiding the problem of arcing of the brake contactor contacts and reducing the noise generated by the brake contactor.

[0039] Optionally, the second control module 20 also includes a converter 24, which can be a thermoelectric converter; the two ends of the converter 24 are respectively connected to the power supply 400 of the elevator 1000 and multiple control lines 21. When the power supply 400 of the elevator 1000 is an AC power supply 400, the AC power flowing through the converter 24 can be converted into DC power by the converter 24, and the converted DC power is transmitted to the brake 200 of the elevator 1000 through multiple control lines 21.

[0040] In this way, by controlling the conduction or disconnection of the safety circuit 12, the first switch element 13 and the second switch element 14 included in the first control module 10, the current output by the power supply 400 in the elevator 1000 can be controlled to flow to multiple control lines 21, thereby controlling the power supply 400 to supply power to the brake 200 of the elevator 1000, and reducing the noise in the elevator 1000 control device 100.

[0041] Please refer to Figure 3. In some embodiments, the first controller 11 is connected to a preset voltage sampling point 15 in the first control module 10. When the safety circuit 12 is disconnected, the voltage at the voltage sampling point 15 is a first preset voltage; when the safety circuit 12 is connected, the voltage at the voltage sampling point 15 is a second preset voltage, which is greater than the first preset voltage. The first controller 11 is configured to obtain the voltage at the voltage sampling point 15 and control the multiple control lines 21 to be disconnected when the voltage at the voltage sampling point 15 is the first preset voltage.

[0042] Specifically, a voltage sampling point 15 is preset in the first control module 10. A device for collecting the voltage at the end of the safety circuit 12, such as a sampling chip or a voltmeter, is provided at the voltage sampling point 15. The voltage sampling point 15 is provided on the line between the safety circuit 12 and the first switch element 13, or on the line between the first switch element 13 and the second switch element 14. The voltage sampling point 15 is connected to the first controller 11, so that the first controller 11 can obtain the voltage at the end of the safety circuit 12 through the voltage sampling point 15. When the safety circuit 12 is disconnected, the voltage of the sampling point obtained by the first controller 11 is a first preset voltage. At this time, the first controller 11 can control multiple control lines 21 to be disconnected, so that the multiple control lines 21 stop supplying power to the brake 200 of the elevator 1000; when the safety circuit 12 is on, the voltage of the sampling point obtained by the first controller 11 is a second preset voltage, and the value of the second preset voltage is greater than the value of the first preset voltage. At this time, the first controller 11 can control multiple control lines 21 to be turned on, so that the multiple control lines 21 can supply power to the brake 200 of the elevator 1000.

[0043] In this way, the first controller 11 controls the conduction and disconnection of multiple control lines 21 by detecting the voltage at the voltage sampling point 15. When the safety circuit 12 is suddenly disconnected, the first controller 11 monitors the voltage at the end of the safety circuit 12 and stops the multiple control lines 21 from supplying power to the brake 200 of the elevator 1000, shortening the response time of the braking action of the brake 200 of the elevator 1000, and reducing the noise in the control device 100 of the elevator 1000.

[0044] Please refer to Figure 3. In some embodiments, the second control module 20 also includes multiple third switch elements 22, each of which is located in each control line 21. The third switch element 22 is configured to control the conduction or disconnection of the corresponding control line 21, and the first controller 11 is configured to control the conduction or disconnection of the multiple third switch elements 22.

[0045] Specifically, the second control module 20 includes a third switch 22, which may be a diode, a transistor, or the like. The number of third switches 22 may be multiple, and this is not limited herein. One or more third switches 22 are respectively provided on each control circuit 21, and the third switches 22 are connected to the first controller 11. One or more third switches 22 can control the corresponding control circuit 21 to be conductive or disconnected, and the first controller 11 can control the one or more third switches 22 to be conductive or disconnected, thereby enabling the first controller 11 to control the corresponding control circuit 21 to be conductive or disconnected by controlling the third switches 22. For example, there are two third switches 22, namely K1 and K2. The control circuit 21 corresponding to K1 is L1, and the control circuit 21 corresponding to K2 is L2. L1 supplies power to the brake 200 of the elevator 1000, and L2 supplies power to the other brake 200 of the elevator 1000. When the elevator 1000 performs a power detection on the brake 2001 of the elevator 1000, the third switch element 22K1 is turned on, the third switch element 22K2 is turned off, and the control line 21L1 provides current to the brake 2001 to obtain the situation that the brake 2001 of the elevator 1000 brakes the elevator 1000; when the elevator 1000 performs a power detection on the brake 2002 of the elevator 1000, the third switch element 22K2 is turned on, the third switch element 22K1 is turned off, and the control line 21L2 provides current to the brake 2002 to obtain the situation that the brake 2002 of the elevator 1000 brakes the elevator 1000.

[0046] In this way, the first controller 11 controls the corresponding control line 21 to be turned on or off by controlling one or more third switch elements 22, thereby avoiding using the second switch element 14 to control the on and off of multiple control lines 21 when the elevator 1000 is in a light-load state, thereby improving the service life of the second switch element 14 and reducing the noise in the elevator 1000 control device 100.

[0047] Please refer to Figure 4. In some embodiments, the second control module 20 also includes a second controller 25. The plurality of third switch elements 22 are connected to the first controller 11 through the second controller 25. The second controller 25 is configured to control the plurality of third switch elements 22 to be turned on or off when receiving the first control signal from the first controller 11.

[0048] Specifically, the second control module 20 includes a second controller 25, which can be another microcontroller unit of the elevator 1000. The number of second controllers 25 is not limited here. The second controller 25 can be connected to one or more third switch elements 22 and connected to the first controller 11, so that the first controller 11 is connected to the one or more third switch elements 22 through the second controller 25. When the second controller 25 receives a first control signal from the first controller 11, it controls the one or more third switch elements 22 to be turned on or off.

[0049] Optionally, the second controller 25 can continue to communicate with the first controller 11, and one or more third switch elements 22 are in the on state. When the second controller 25 does not receive communication information from the first controller 11, the second controller 25 can control one or more third switch elements 22 to disconnect.

[0050] In this way, the second controller 25 controls the conduction or disconnection of one or more third switch elements 22 by receiving the first control signal sent by the first controller 11. When the first controller 11 fails and cannot control the conduction and disconnection of multiple control lines 21, the second controller 25 can complete the conduction and disconnection of the elevator 1000 and the multiple control lines 21, thereby shortening the response time of the braking action of the elevator 1000 brake 200 and improving the safety of the operation of the elevator 1000.

[0051] Referring to FIG. 5 , in some embodiments, a plurality of third switch elements 22 are connected to a voltage sampling point 15 preset in the first control module 10. When the voltage at the voltage sampling point 15 is a first preset voltage, one or more of the plurality of third switch elements 22 are disconnected. When the voltage at the voltage sampling point 15 is a second preset voltage, one or more of the plurality of third switch elements 22 are connected, and the second preset voltage is greater than the first preset voltage.

[0052] Specifically, one or more third switch elements 22 can be connected to a voltage sampling point 15 preset in the first control module 10. When the third switch element 22 obtains that the voltage at the voltage sampling point 15 is a first preset voltage, the one or more third switch elements 22 will be disconnected, and one or more control lines 21 will be disconnected, thereby cutting off the DC output of the corresponding control line 21 of the converter 24, and the converter 24 stops supplying power to the brake 200 of the elevator 1000. When the third switch element 22 obtains that the voltage at the voltage sampling point 15 is a second preset voltage, the one or more third switch elements 22 will be connected, and one or more control lines 21 will be connected, so that the converter 24 can output DC through the corresponding control line 21 to supply power to the brake 200 of the elevator 1000. For example, the third switch element 22 can be a diode. When the diode receives a low level at the voltage sampling point 15, the diode is in a cut-off state, and the brake 200 starts to brake the elevator 1000; when the diode receives a high level at the voltage sampling point 15, the diode is in a conductive state, and the brake 200 starts to release the elevator 1000.

[0053] In this way, by detecting the voltage at the voltage sampling point 15 to control the conduction and disconnection of the third switch 22, and then controlling the conduction and disconnection of the corresponding control line 21, when the safety circuit 12 is suddenly disconnected, the third switch 22 monitors the voltage at the end of the safety circuit 12 to stop multiple control lines 21 from supplying power to the brake 200 of the elevator 1000, thereby shortening the response time of the braking action of the brake 200 of the elevator 1000.

[0054] Referring to FIG. 6 , in some embodiments, the second control module 20 includes a driver 26 . The driver 26 is connected to the plurality of third switch elements 22 . The driver 26 is configured to control one or more of the plurality of third switch elements 22 to be turned on or off.

[0055] Specifically, the second control module 20 includes a driver 26, which can be a reverse driver 26. The driver 26 is connected to one or more third switch elements 22, and the driver 26 can control the one or more third switch elements 22 to be turned on or off, thereby controlling the converter 24 to supply power to the brake 200 of the elevator 1000.

[0056] In this way, by controlling one or more third switch elements 22 to be turned on or off through the driver 26, it is possible to avoid using the second switch element 14 to control the on and off of multiple control lines 21 when the elevator 1000 is in a light-load state, thereby improving the service life of the second switch element 14.

[0057] Referring to FIG. 7 , the driver 26 is connected to both the voltage sampling point 15 preset by the first control module 10 and the first controller 11 . The driver 26 is configured to control one or more of the plurality of third switch elements 22 to be turned on or off according to the first control signal of the first controller 11 and / or the voltage at the voltage sampling point 15 .

[0058] Specifically, the driver 26 in the second control module 20 can be connected to the voltage sampling point 15 and the first controller 11 in the first control module 10, respectively. The driver 26 can receive the first control signal from the first controller 11 and the voltage at the voltage sampling point 15, thereby controlling one or more of the plurality of third switching elements 22 to be turned on or off according to the first control signal from the first controller 11 and the voltage at the voltage sampling point 15. For example, the driver 26 can be connected to the voltage sampling point 15 and the first controller 11, respectively, via an AND gate logic connection. When the driver 26 receives the second preset voltage at the voltage sampling point 15 and the first control signal indicating that the third switching elements 22 are turned on, the driver 26 can control the one or more third switching elements 22 to be turned on. When the driver 26 receives the first control signal indicating that the third switching elements 22 are not turned on or the voltage at the voltage sampling point 15 is the first preset voltage, the driver 26 can control the one or more third switching elements 22 to be turned off.

[0059] In this way, by configuring the driver 26 to control one or more of the multiple third switch elements 22 to be turned on or off according to the first control signal of the first controller 11 and the voltage of the voltage sampling point 15, the response time of the braking action of the brake 200 of the elevator 1000 can be shortened and the safety of the operation of the elevator 1000 can be improved.

[0060] Optionally, referring to FIG. 8 , the driver 26 may be connected to the first controller 11 ; and / or the driver 26 may be connected to the second controller 25 ; and / or the driver 26 may be connected to a preset voltage sampling point 15 .

[0061] Specifically, the driver 26 in the second module can be connected to the first controller 11, and the driver 26 can control the conduction and disconnection of the third switch element 22 according to the control information of the first controller 11; and / or the driver 26 can be connected to the second controller 25, and the driver 26 can control the conduction and disconnection of the third switch element 22 according to the control information of the second controller 25; and / or the driver 26 can be connected to the voltage sampling point 15, and the driver 26 can control the conduction and disconnection of the third switch element 22 according to the voltage at the voltage sampling point 15.

[0062] Referring to FIG. 9 , in some embodiments, multiple brakes 200 are connected to the first controller 11 , and the first controller 11 is configured to obtain the braking status of the multiple brakes 200 and control the output voltage of the power supply 400 in the elevator 1000 according to the braking status.

[0063] Specifically, the elevator 1000 has a plurality of brakes 200, and it should be noted that the number of brakes 200 is greater than or equal to two. The plurality of brakes 200 are connected to the first controller 11 via a bus. The first controller 11 can obtain the braking status of the plurality of brakes 200, which can be either a braking state or an unbraking state. Furthermore, the first controller 11 can control the output voltage of the power supply 400 in the elevator 1000 based on the braking state of the brakes 200. For example, when the brake 200 is transitioning from a braking state to an unbraking state, the power supply 400 in the elevator 1000 has a starting voltage of 110V. Subsequently, when the brake 200 is in an unbraking state, the power supply 400 in the elevator 1000 has a maintaining voltage of 80V.

[0064] Optionally, the first controller 11 controls the power supply 400 in the second control module 20 by issuing a first control signal. At this time, the first control module 10 can determine the braking state of the brake 200 of the elevator 1000, and issue a prompt message when the braking state of the brake 200 does not conform to the braking state corresponding to the first control signal; or, when the braking state of the brake 200 does not conform to the braking state corresponding to the first control signal, the first controller 11 further controls the power supply 400 in the elevator 1000, for example, the first controller 11 controls the first switch 13 to disconnect and the first controller 11 controls the third switch 22 to disconnect.

[0065] In this way, the first controller 11 can form a closed-loop control of the voltage switching of the power supply 400 in the elevator 1000 by controlling the output voltage of the power supply 400 in the elevator 1000 according to the braking state.

[0066] Please refer to Figures 1 and 9 again. In some embodiments, the control device 100 also includes a third control module 30. The first controller 11 is connected to the car 300 of the elevator 1000 through the third control module 30. The third control module 30 is configured to control the operation of the car 300 according to the second control signal sent by the first controller 11.

[0067] Specifically, the control device 100 includes a third control module 30, which can be a drive inverter for the elevator 1000. The first controller 11 can be connected to the elevator car 300 of the elevator 1000 through the third control module 30. The third control module 30 controls the operation of the elevator car 300 according to the second control signal issued by the first controller 11. For example, the first switch 13 and the second switch 14 are turned on according to the second control signal issued by the first controller 11, so that the power supply 400 in the elevator 1000 inputs current to the control circuit 21, and the control circuit 21 transmits current to the brake 200, so that the brake 200 is energized. The first controller 11 obtains the braking state of the brake 200 and controls the operation of the elevator car 300 according to the second control signal issued by the first controller 11 through the bus.

[0068] Please refer to FIG. 10 . In some embodiments, the safety circuit 12 includes one or more fourth switch elements 121 . The one or more fourth switch elements 121 are connected in series. When any fourth switch element 121 is disconnected, the safety circuit 12 is disconnected.

[0069] Specifically, the safety circuit 12 includes a fourth switch element 121. The fourth switch element 121 may be a diode, a transistor, or the like. The number of fourth switch elements 121 is not limited herein. Multiple fourth switch elements 121 are connected in series within the safety circuit 12. That is, if any of the multiple fourth switch elements 121 is disconnected, the safety circuit 12 is also disconnected.

[0070] In this way, by connecting one or more fourth switch elements 121 in the safety circuit 12 in series, the safety circuit 12 can be directly disconnected when a fault occurs in the elevator 1000, thereby shortening the response time of the brake 200 in issuing a braking action.

[0071] Referring again to Figures 1 and 2, an elevator 100 according to one embodiment of the present disclosure includes a car 300, a brake 200, and a control device 100. The brake 200 is used to brake the car 300. The control device 100 includes a first control module 10 and a second control module 20. The first control module 10 includes a first controller 11; the second control module 20 includes multiple control lines 21, which are connected to the first controller 11. The first controller 11 is configured to control the connection or disconnection of the multiple control lines 21. When the control lines 21 are connected, they are configured to supply power to the corresponding brake 200. When the control lines 21 are disconnected, the brake 200 is configured to brake.

[0072] A control method according to an embodiment of the present disclosure is applied to a control device 100, wherein the control device 100 includes a first control module 10 and a second control module 20, wherein the first control module 10 includes a first controller 11, and the second control module 20 includes a plurality of control lines 21. The method includes controlling the plurality of control lines 21 to be turned on or off by the first controller 11, wherein the control lines 21 are configured to supply power to the corresponding brake 200 when the control lines 21 are turned on, and the brake 200 performs braking when the power is off.

[0073] Specifically, the control method controls the conduction and disconnection of multiple control lines 21 by sending a control signal through the first controller 11. When the first controller 11 controls the multiple control lines 21 to be conducted, the current in the power supply 400 can be transmitted to the brake 200, and the brake 200 can brake the car 300 of the elevator 1000 when it is energized; when the first controller 11 controls the multiple control lines 21 to be disconnected, the current in the power supply 400 cannot be transmitted to the brake 200, and the brake 200 can release the car 300 of the elevator 1000 when it is powered off, so that the control method can realize braking and releasing of the brake 200 through the first controller 11.

[0074] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0075] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0076] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A control device, wherein: include: A first control module includes a first controller; The second control module includes multiple control lines, which are connected to the first controller. The first controller is configured to control the multiple control lines to be turned on or off. The control lines are configured to supply power to the corresponding brakes when they are turned on, and to brake when the power is off.

2. The control device according to claim 1, wherein: The first control module further includes a safety circuit, a first switch and a second switch. The safety circuit, the first switch and the second switch are connected in series. The first controller is connected to the first switch. The first controller is configured to control the first switch to be turned on or off. When the first switch or the safety circuit is turned off, the second switch is turned off; when the first switch and the safety circuit are both turned on, the second switch is turned on. The power source is connected to the plurality of control lines through the second switch element, and supplies power to the plurality of control lines when the second switch element is turned on.

3. The control device according to claim 2, wherein: The first controller is connected to a voltage sampling point preset in the first control module, and when the safety circuit is disconnected, the voltage at the voltage sampling point is a first preset voltage; When the safety circuit is turned on, the voltage at the voltage sampling point is a second preset voltage, and the second preset voltage is greater than the first preset voltage; The first controller is configured to obtain the voltage at the voltage sampling point, and control the plurality of control lines to be disconnected when the voltage at the voltage sampling point is a first preset voltage.

4. The control device according to claim 1, wherein: The second control module also includes multiple third switch elements, each of which is located in each of the control lines, and the third switch elements are configured to control the conduction or disconnection of the corresponding control lines. The first controller is configured to control the conduction or disconnection of the multiple third switch elements.

5. The control device according to claim 4, wherein: The third switch element is a diode or a transistor.

6. The control device according to claim 4, wherein: The plurality of third switch elements are connected to the first controller.

7. The control device according to claim 4, wherein: The second control module also includes a second controller, and the plurality of third switch elements are connected to the first controller via the second controller. The second controller is configured to control the plurality of third switch elements to be turned on or off upon receiving a first control signal from the first controller.

8. The control device according to claim 4, wherein: The plurality of third switch elements are connected to a voltage sampling point preset in the first control module, and when the voltage at the voltage sampling point is a first preset voltage, one or more of the plurality of third switch elements are disconnected; When the voltage at the voltage sampling point is a second preset voltage, one or more of the plurality of third switch elements are turned on, and the second preset voltage is greater than the first preset voltage.

9. The control device according to claim 4 or 7, wherein: The second control module includes a driver connected to each of the plurality of third switch elements, and the driver is configured to control one or more of the plurality of third switch elements to be turned on or off.

10. The control device according to claim 9, wherein: The driver is connected to both the voltage sampling point preset by the first control module and the first controller, and is configured to control one or more of the plurality of third switch elements to be turned on or off according to a first control signal of the first controller and / or the voltage at the voltage sampling point.

11. The control device according to claim 1, wherein: The plurality of brakes are connected to the first controller, and the first controller is configured to obtain the braking status of the plurality of brakes and control the output voltage of the power supply of the second control module according to the braking status.

12. The control device according to claim 1, wherein: Also includes: A third control module, wherein the first controller is connected to the elevator car through the third control module, and the third control module is configured to control the operation of the car according to a second control signal sent by the first controller.

13. The control device according to claim 2, wherein: The safety circuit comprises one or more fourth switch elements, and the one or more fourth switch elements are connected in series. When any one of the fourth switch elements is disconnected, the safety circuit is disconnected.

14. An elevator, wherein: A car, a brake and a control device as described in any one of claims 1 to 11, wherein the brake is used to brake the car.

15. A control method, wherein: Applied to a control device, the control device includes a first control module and a second control module, the first control module includes a first controller, and the second control module includes a plurality of control lines, the method includes: The first controller controls the multiple control lines to be turned on or off, and the multiple control lines are respectively connected to multiple brakes one by one. The control lines are configured to supply power to the corresponding brakes when turned on, and to brake when the power is off.

Images