System, electronic device and method for detecting conveyor device brake status

Abstract

The invention provides a system for detecting the state of a brake of a conveying device, and the system comprises a resistance detection part which is used for detecting the resistance of the brake; the voltage acquisition part is used for acquiring the brake lifting voltage of the brake; a memory to store instructions; a processor configured to execute the instruction and calculate a temperature of the brake based on an initial resistance of the brake and a resistance of the brake detected by the resistance detection circuit when the instruction is executed; and the state of the brake is determined according to the calculated temperature and the brake lifting voltage acquired by the voltage acquisition component, and a signal representing the state is generated. An electronic device and a method for detecting a state of a conveyor brake are also provided.

Description

Technical Field

[0001] The present application relates to technologies related to a conveying device, and more specifically, to technologies for detecting a brake state of a conveying device. Background Art

[0002] Elevators are used to transport passengers and / or goods. Passenger safety is one of the most important factors for elevators, and the elevator car must be controlled not to fall freely or move upward or move uncontrollably. Therefore, most countries have issued relevant regulations for elevator safety to ensure that elevators can be regularly maintained and operate safely. For example, the minimum release voltage of the brake is required to be less than 80% of the rated voltage, and the brake wear is required to be checked regularly. At present, the maintenance and inspection of elevators are mainly carried out manually on site, such as manually checking the wear of the brake lining on site. It is necessary to make improvements in the maintenance of elevators. Summary of the invention

[0003] The present invention provides a system for detecting the state of a conveying device brake, which includes a resistance detection component, which is used to detect the resistance of the brake; a voltage acquisition component, which is used to acquire the brake-lifting voltage; a memory, which is used to store instructions; a processor, which is configured to execute the instructions and calculate the temperature of the brake based on the initial resistance of the brake and the resistance of the brake detected by the resistance detection circuit when executing the instructions; determine the state of the brake based on the calculated temperature and the brake-lifting voltage acquired by the voltage acquisition component; and generate a signal indicating the abnormal state when it is determined that the state of the brake is abnormal.

[0004] The system for detecting the brake state of the conveying device, optionally, when the processor executes the instruction, determines the state of the brake based on the calculated temperature and the brake voltage collected by the voltage collection component through the following operations: based on the calculated temperature, the brake voltage is compared with the voltage upper limit threshold; when the brake voltage is greater than the voltage upper limit threshold, it is determined that the brake state is abnormal.

[0005] The system for detecting the brake status of the conveying device, optionally, when the processor executes the instruction, further: compares the brake voltage with the voltage lower limit threshold; generates a warning signal when the brake voltage is less than the voltage upper limit threshold but greater than the voltage lower limit threshold; and generates a signal indicating that the brake status is normal or does not generate a signal when the brake voltage is less than the voltage lower limit threshold.

[0006] The system for detecting the brake status of a conveying device may optionally further include an output device.

[0007] According to another aspect of the present application, an electronic device for detecting the state of the brake of a conveying device is also provided, and the electronic device includes: a first connection part, which is used to obtain the resistance of the brake; a second connection part, which is used to obtain the brake-lifting voltage; a memory, which is used to store instructions; a processor, which is configured to execute the instructions, and when executing the instructions: calculate the temperature of the brake based on the initial resistance of the brake and the obtained resistance of the brake; determine the state of the brake based on the calculated temperature and the obtained brake-lifting voltage; and generate a signal indicating the abnormal state when it is determined that the state of the brake is abnormal.

[0008] The electronic device, optionally, when the processor executes the instruction, determines the state of the brake based on the calculated temperature and the brake voltage collected by the voltage collection component through the following operations: comparing the brake voltage with the voltage upper limit threshold value based on the calculated temperature; when the brake voltage is greater than the voltage upper limit threshold value, determining that the state of the brake is abnormal.

[0009] The electronic device, optionally, when the processor executes the instruction, further: compares the brake voltage with the voltage lower limit threshold; generates a warning signal when the brake voltage is less than the voltage upper limit threshold but greater than the voltage lower limit threshold; and generates a signal indicating that the brake state is normal or does not generate a signal when the brake voltage is less than the voltage lower limit threshold.

[0010] The electronic device may, optionally, be characterized in that the first connecting portion comprises: a signal receiving portion, and a resistance detecting component.

[0011] In the electronic device, optionally, the second connecting portion includes: a signal receiving portion and a voltage collecting component.

[0012] The electronic device, optionally, the system further comprises an output device, the output device comprises one or both of a display module and a communication module, the display module comprises one or more of a display screen, an indicator light, and a voice output device.

[0013] According to another aspect of the present application, a method for detecting the state of a conveying device brake is also provided, the method comprising obtaining the resistance of the brake; obtaining the brake-lifting voltage of the brake; calculating the temperature of the brake based on the initial resistance of the brake and the obtained resistance of the brake; determining the state of the brake based on the calculated temperature and the obtained brake-lifting voltage; and when it is determined that the state of the brake is abnormal, generating a signal representing the state.

[0014] A non-transitory storage medium is also provided for storing program instructions, which implement any one of the methods described herein when the program instructions are executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following will describe the embodiments of the present application in detail with reference to the accompanying drawings so that the present application can be more fully understood, wherein:

[0016] Figure 1 The structure of the elevator brake is briefly illustrated;

[0017] Figure 2 The curve of the brake voltage changing with the gap is shown;

[0018] Figure 3 is a schematic diagram of the structure of a system 3 for detecting the state of an elevator brake according to an example of the present application;

[0019] Figure 4 Schematic diagram of preset areas according to some examples of the present application;

[0020] Figure 5 is a schematic diagram of the structure of an electronic device 5 for detecting the state of an elevator brake according to some examples of the present application;

[0021] Figure 6 A flow chart illustrating a method for detecting the state of an elevator brake;

[0022] Figure 7 Example Figure 6 An implementation process of step S606 shown in FIG. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art to accurately understand the subject matter for which protection is sought in the present application, the specific implementation of the present application will be described in detail below in conjunction with the accompanying drawings.

[0024] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the invention described herein can be implemented in an order other than the examples illustrated or described herein. In addition, "first" and "second" are used only for descriptive purposes, rather than to express or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise stated, "multiple" means two or more.

[0025] As used hereinafter, the words “example” or “exemplarily” or “exemplarily” mean “serving as an example, embodiment, or illustration.” Any embodiment described as “example” or “exemplarily” or “exemplarily” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026] The term "transport device" in this application includes devices such as elevators for transporting passengers and / or goods. The brake of the conveying device brakes the conveying device in its closed state to stop the conveying device, and releases the brake on the conveying device when the brake is switched from the closed state to the open state. In the following embodiments of this application, an elevator will be used as an example of a conveying device, and accordingly, the elevator brake will be used as the conveying device brake for description.

[0027] In the present application, the brake resistance and the brake temperature refer to the resistance of the brake coil and the temperature of the brake coil by way of example and not limitation.

[0028] Figure 1 The structure of the elevator brake is briefly shown. Figure 1 As shown, the brake includes a brake component 11, an elastic component 15 such as a spring, a static plate 17 and a drive circuit (not shown). The brake component 11 includes a gate lining 12 and an armature plate 14 combined together, wherein the gate lining 12 is arranged on the side facing the component to be braked and the armature plate 14 is arranged on the side facing the static plate 17. The drive circuit includes a coil 160. It should be noted that the names of the various components of the brake described in this application may be different in actual applications due to various factors such as the application environment. For example, the armature plate 14 may be called an iron plate, a moving plate, etc., the gate lining 12 may be called a brake shoe, a brake lining, etc., and the brake wheel 10 may also be called a rope pulley, a brake drum, etc. It should be understood that the brake actually includes more parts than the structure illustrated here. The schematic diagram of the brake in this application is only used to explain its principles and working processes related to this application in a concise and intuitive manner, and is not used to illustrate or limit the specific structure and shape of the brake.

[0029] Voltage is applied to the coil 160 to energize it. As the voltage increases, the magnetic field generated by the coil 160 increases. The force of the magnetic field causes the armature plate 14 to overcome the force of the elastic component 15 and move in a direction away from the brake wheel 10, thereby releasing the brake. The voltage applied to the coil 160 to release the brake component from closed to open is the opening voltage, also known as the release or pick voltage. The power applied to the coil 160 is cut off, and the electromagnetic force acting on the armature plate 14 disappears. Under the action of the spring 15, the armature plate 14 moves toward the brake wheel 10, causing the brake lining 12 of the brake component to abut against the brake wheel 10, and the brake wheel 10 is braked by the friction between the brake lining 12 and the brake wheel 10. As the elevator is used, the brake lining 12 gradually wears due to friction with the brake wheel 10, causing the gap between the brake lining 12 and the brake wheel 10 to increase, which leads to an increase in the pick voltage.

[0030] Figure 2 The curve of the brake voltage changing with the gap is shown, where the horizontal axis represents the gap in millimeters and the vertical axis represents the brake voltage V pick , in volts. Curve 20 is the brake voltage V when the brake is at 20 degrees Celsius. pick Curve 22 is the relationship curve between the brake voltage and the gap when the brake is at 100 degrees Celsius.

[0031] Figure 3 is a schematic diagram of the structure of a system 3 for detecting the state of an elevator brake according to an example of the present application. Figure 3 As shown, the system 3 includes a resistance detection component 30, a voltage acquisition component 32, a memory 34 and a processor 36. The resistance detection component 30 is used to detect the resistance of the brake. The voltage acquisition component 32 is used to acquire the brake voltage. The memory 34 stores instructions. The processor 36 is configured to execute the instruction, and when executing the instruction, the temperature of the brake is calculated based on the brake resistance detected by the resistance detection component 30 and the initial resistance of the brake; the state of the brake is determined by the calculated temperature and the acquired brake voltage; and, when it is determined that the brake state is abnormal, a signal indicating the abnormal state is generated.

[0032] In the embodiment of the present application, for example, the resistance of the brake coil is used as the resistance of the brake, for example Figure 1 The coil 160 in the brake. The temperature rise and fall of the coil will affect its own resistance. Therefore, the brake temperature can be determined according to the resistance detected by the resistance detection component 30. It should be noted that in each example of the present application, the brake temperature is exemplified but not limited to the coil temperature.

[0033] The resistance detection component 30 can be implemented by a resistance detection circuit. Other components or means that can detect resistance are also feasible. For example, the resistance detection component 30 is implemented as a signal receiver in some possible cases to receive a signal indicating the size of the brake resistance transmitted by the elevator controller or the brake controller.

[0034] The voltage acquisition component 32 is configured to acquire the brake release voltage of the brake, which can be implemented as a circuit or a voltage sensor when possible. Figure 1 Taking the brake of the embodiment of the present invention as an example, as the voltage applied to the coil 160 increases, the brake component 11 leaves the brake wheel 10 and moves toward the static plate 17. During the movement of the brake component 11, the switch provided on the brake will be triggered. According to the example of the present application, the voltage collection component 32 is configured to collect the voltage of the coil 160 when the switch is triggered as the brake lifting voltage. For example, the voltage collection component 32 can be connected to the switch of the brake to collect the voltage when the switch is triggered.

[0035] As an alternative, the voltage acquisition component 32 can also be implemented as a signal receiver for receiving a signal transmitted by the elevator controller or the brake controller indicating the magnitude of the brake voltage when the switch is triggered. The implementation of the voltage acquisition component 32 is not limited to that described herein, as long as the system 3 can obtain the brake voltage.

[0036] In addition, the switch, i.e., the switch set on the brake and triggered as described above, can be a switch that is already on the brake and will be triggered during the brake lifting process, or can be a switch that is set separately to be triggered. It should be noted that, although the embodiments of the present application use the voltage when the switch is triggered as the value of the brake lifting voltage, the voltage at other times during the brake lifting process is also feasible.

[0037] For example, the relationship between the temperature and resistance of the coil in this example is expressed by formula (1):

[0038]

[0039] Among them, R T is the resistance detected by the resistance detection component 30, R initial is the initial resistance of the coil, t T The resistance detection component 30 detects the resistance R T Brake temperature at time t initial The brake temperature at the initial resistance.

[0040] The initial resistance of the coil is a resistance value predetermined and stored in the system 3, such as a resistance value stored in the memory 14. When the processor 16 executes the instruction in the memory 14, it obtains the resistance value of the initial resistance from the memory 14 and calculates the temperature t according to formula (1).T It should be noted that the initial resistance of the coil may be, for example, the resistance value of the coil at 20 degrees Celsius.

[0041] For the coil, at the same temperature, the gap becomes larger and the brake voltage also becomes larger. According to the example of the present application, the relationship between temperature and brake voltage can be predetermined. In other words, for each temperature, the voltage upper limit threshold at the temperature can be predetermined. In the embodiment of the present application, for the same temperature, the voltage upper limit threshold for the temperature is predetermined, and the voltage lower limit threshold for the temperature is also determined. If the brake voltage is greater than the voltage upper limit threshold for the temperature, it indicates that the brake is abnormal; if the brake voltage is between the voltage upper limit threshold and the voltage lower limit threshold, it indicates that the brake state is likely to enter an abnormal state, or is about to enter an abnormal state; when the brake voltage is less than the voltage lower limit threshold, it indicates that the brake is normal. In some examples, when the brake is abnormal, a signal indicating the brake abnormality is issued, and when the brake is about to enter an abnormality, an early warning signal indicating an early warning is issued.

[0042] According to the example of the present application, the processor 16 compares the collected brake voltage with the voltage upper limit threshold value based on the calculated temperature. That is to say, for the calculated temperature, the collected brake voltage at the temperature is compared with the voltage upper limit threshold value and the voltage lower limit threshold value for the temperature. When the brake voltage is greater than the voltage upper limit threshold value, the processor 16 generates a signal indicating that the brake state is abnormal; when the brake voltage is less than the voltage upper limit threshold value but greater than the voltage lower limit threshold value, the processor 16 generates an early warning signal; when the brake voltage is less than the voltage lower limit threshold value, the processor 16 may not process or generate a signal indicating that the brake is normal.

[0043] For example, for temperature t T , the voltage upper limit threshold and voltage lower limit threshold can be determined by the following formulas (2) and (3):

[0044] V1=0.75*V R *K (2)

[0045] V2=0.8*V R *K (3)

[0046] Among them, V1 is the lower voltage threshold, V2 is the upper voltage threshold, K is the calculation factor, V R is the rated voltage; the constant 0.75 in formula (2) and the constant 0.8 in formula (3) can be set according to the actual application, for example, the constant in formula (2) can be set to 0.78, 0.70, etc., and the constant 0.8 in formula (3) can be set to 0.82, 0.79, etc., as long as the purpose of detecting the brake state can be achieved. However, it should be understood that they should be set within a reasonable range.

[0047] K is calculated according to the following formula (4):

[0048]

[0049] Among them, R T is the resistance detected by the resistance detection component 30, t T The resistance detection component 30 detects the resistance R T The brake temperature at limited It is a set resistance value, which can be set by referring to the requirements of relevant specifications and standards for elevator brake temperature, such as 110 degrees, etc. limited The corresponding resistance value is R limited The resistance of the coil.

[0050] The correspondence between the coil temperature and the brake voltage can be predetermined, thereby forming a correspondence table between temperature and voltage. Figure 4 The relationship between the brake voltage and the coil temperature is exemplarily illustrated. In this example, the rated voltage of the elevator brake is 48 volts, the horizontal axis is the temperature in degrees Celsius, and the vertical axis is the brake voltage in volts. The voltage upper limit threshold and the voltage lower limit threshold set for each temperature can form an upper limit curve 400 and a lower limit curve 410, thereby constructing a normal brake state, an abnormal brake state, and a warning area. Figure 4 As shown, the brake voltage falls in area 40, indicating that the brake state is normal; the brake voltage falls in area 42, indicating that the brake state is close to abnormal; the brake voltage falls in area 44, indicating that the current brake state is abnormal.

[0051] The system 3 for detecting the state of the elevator brake can be implemented in an existing device. For example, it can be implemented in the control cabinet of the elevator control system. In this case, an operation key can be set for the system 3 so that the maintenance personnel can notify the operation key to operate the system 3 during the elevator maintenance process to detect the state of the elevator brake. For example, when the elevator is not carrying passengers, or during maintenance, the maintenance personnel press the operation key to detect the current resistance of the brake to calculate the current temperature of the brake according to formula (1). On the other hand, the brake is switched from closed to open (i.e., the brake is lifted), the brake lifting voltage is obtained, and the brake state is determined based on the temperature and the brake lifting voltage. After determining the state, the controller outputs a signal indicating the state so that the maintenance personnel can understand the brake state.

[0052] As an alternative, system 3 can be implemented in an electronic device independent of the elevator, and the elevator brake state is determined by electrically connecting the electronic device to the elevator brake. For example, system 3 can be implemented in a portable electronic device such as a handheld device, and the electronic device is electrically connected to the elevator system, specifically, the brake subsystem of the elevator system, such as the terminal part corresponding to the brake in the control cabinet, so as to determine the elevator brake state based on the collected brake voltage, etc. It can be seen that the detection process of the elevator brake using system 3 no longer judges the brake state by manually detecting the gap, saving manpower and various costs for elevator maintenance.

[0053] Figure 5 1 is a schematic diagram of the structure of an electronic device 5 for detecting the state of an elevator brake according to some examples of the present application. As shown in the figure, the electronic device 5 includes a first connection part 50, a second connection part 52, a memory 54, and a processor 56. Optionally, the electronic device 5 also includes a trigger button 57 and an output device 58. The power supply of the electronic device 5 can come from a battery or a mains power supply.

[0054] The first connection part 50 is used to obtain the resistance of the elevator brake. In some examples, the first connection part 50 can be connected to the corresponding interface of the elevator brake, and the resistance of the elevator brake is detected by the resistance detection component arranged in the first connection part 50. In some examples, the first connection part 50 is configured as a signal receiving part, which can be electrically connected to the elevator brake, so as to receive a signal indicating the resistance of the elevator brake from the elevator brake, such as a signal sent by the elevator brake controller.

[0055] The second connection part 52 is used to obtain the brake lifting voltage. In some examples, the second connection part 52 may include a voltage collection component to collect the brake lifting voltage when the second connection part 52 is connected to the brake and during the brake lifting process. In other examples, the second connection part 52 may be configured as a signal receiving part, which may be electrically connected to the elevator brake to receive a signal from the elevator brake, such as a signal indicating the magnitude of the brake lifting voltage sent by the elevator brake controller.

[0056] In the present application, the signal receiving unit may receive the signal by line connection, but it is also possible to receive the signal by wireless communication.

[0057] In addition, according to some embodiments of the present application, the electronic device 5 can be connected to the controller of the elevator through the first connection part 50 and the second connection part 52 to obtain the resistance and the brake voltage of the brake. In some specific examples, the first connection part 50 and the second connection part 52 can be connected to the corresponding interface of the control box of the elevator to obtain the resistance and the brake voltage.

[0058] The memory 54 stores instructions, and the processor 56 is configured to execute these instructions and calculate the temperature t according to formula (1) when executing these instructions. T And take the calculated temperature as the reference to determine whether the collected gate voltage is within the range of Figure 4 The area 40 shown in the figure indicates that the brake is normal, the area 44 indicates that the brake is abnormal, or the warning area 42 indicates that the brake is about to be abnormal.

[0059] Specifically, for the calculated temperature t T , the collected gate voltage and the temperature t T When the brake voltage is greater than the upper voltage threshold, the processor 16 generates a signal indicating that the brake state is abnormal; when the brake voltage is less than the upper voltage threshold but greater than the lower voltage threshold, the processor 16 generates a warning signal; when the brake voltage is less than the lower voltage threshold, the processor 16 may not perform any processing or generate a signal indicating that the brake is normal.

[0060] According to some examples of the present application, the electronic device 5 also includes an output device 58, which outputs the signal generated by the processor 56. The output device 58 includes a communication interface and / or a display device. The communication interface is used to transmit the signal generated by the processor 56 from the electronic device 5 to other devices, such as computers, notebooks, tablet computers and smart phones from which the user can obtain the signal. The display device can be a display screen, a display, etc., an audio output component, etc. provided on the electronic device 5. According to a specific example of the present application, the display device of the electronic device 5 includes three display lights, and the display colors thereof are different from each other, so that the user can know which brake state the display signal represents by the color. For example, the red light is on when the brake voltage falls in the unsafe area, the yellow light is on when the brake voltage falls in the warning area, and the green light is on when the brake voltage falls in the safe area.

[0061] According to some examples of the present application, the electronic device 5 further includes a button 57. When the button 57 is operated, the electronic device 5 is powered on, and then performs its function of detecting the brake. The button 57 can be a trigger type, a press type, a voice control type, etc. button.

[0062] The system for conveying the brake state of the device according to the example of the present application can be set in the electronic device for conveying the brake state of the device according to the example of the present application. Figure 3 and Figure 4The resistance detection component 30 is arranged at the first connection part 50, the voltage collection component 32 is arranged at the second connection part 52, and the memory 34 and the processor 36 can be respectively implemented in the memory 54 and the processor 56. The electronic device 5 according to the example of the present application can be implemented as a portable electronic device, such as a handheld terminal, or in some possible cases, can be implemented in a handheld terminal such as a mobile phone, a tablet computer, etc.

[0063] The first connection part and the second connection part of the electronic device 5 according to the present application are connected to the elevator control cabinet, and the elevator brake temperature and the brake voltage are obtained respectively. The obtained brake voltage is compared with the voltage upper limit threshold and the voltage lower limit threshold at the predetermined temperature, and the state of the brake can be determined according to the brake voltage, and an indication signal is issued according to the state. Generally speaking, a corresponding relationship table between the coil temperature and the brake voltage is pre-stored in the electronic device 5. Comparing the obtained brake voltage with the voltage upper limit threshold and the voltage lower limit threshold at the predetermined temperature is equivalent to determining the position of the collected brake voltage in the relationship table based on the calculated temperature, for example Figure 4 Which area in .

[0064] The present application also provides a method for detecting the state of an elevator brake. Figure 6 The flowchart of the method is shown in FIG. Figure 6 As shown, in step S600, the resistance of the brake is obtained. For example, the resistance of the brake is detected by a resistance detection circuit or component. In step S602, the brake-lifting voltage is obtained. For example, the brake-lifting voltage is collected by a voltage acquisition circuit. In step S604, the temperature of the brake is calculated based on the acquired resistance of the brake and the initial resistance of the brake. In step S606, the state of the brake is determined by the calculated temperature and the acquired brake-lifting voltage. In step S608, when it is determined that the state of the brake is abnormal, a signal indicating that the brake state is abnormal is generated.

[0065] According to some examples of the present application, the lift-off voltage is compared with both the upper and lower temperature thresholds and the lower temperature threshold. Figure 7 The process according to these examples is illustrated. Figure 7As shown, in step S706, the collected brake-lifting voltage is compared with the voltage upper limit threshold value based on the calculated temperature. If the collected brake-lifting voltage is greater than the voltage upper limit threshold value, it is determined that the brake state is abnormal, and the process proceeds to step S708 to generate a signal indicating brake abnormality. If the collected brake-lifting voltage is less than the voltage upper limit threshold value, it is further compared with the voltage lower limit threshold value, as shown in step S709. If the collected brake-lifting voltage is greater than the voltage lower limit value, an early warning signal is generated, as shown in step S710. If the collected brake-lifting voltage is less than the voltage lower limit threshold value, a signal indicating that the brake state is normal can be generated, as shown in step S711, or no signal is generated.

[0066] Combination Figure 6 and Figure 7 The various examples of the method for detecting the state of the elevator brake described above can be combined with Figure 3 The various examples of the system 3 described above are implemented, or the above is combined with Figure 5 The various examples of the electronic device 5 described are implemented.

[0067] In practical applications, Figure 6 and Figure 7 The various examples of the method for detecting the elevator brake status described can be implemented as one or more programs by program instructions, and implemented by a device having a processor and, if necessary, two interfaces for connecting to an elevator controller.

[0068] The present application also provides a non-temporary storage medium storing program instructions. When the instructions stored in the storage medium are executed, the examples described above can be implemented.

[0069] The above examples of the present application are all described using elevator brakes as specific examples, but the systems, electronic devices and methods of the above examples can also be applied to conveying devices such as escalators.

[0070] The processor in each example of the present application may be, but is not limited to, a single processor or multi-processor system of any of a variety of possible architectures, including homogeneously or heterogeneously arranged field programmable gate arrays (FPGAs), central processing units (CPUs), application specific integrated circuits (ASICs), digital signal processors (DSPs), or graphics processing units (GPUs) hardware. The memory may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), or other electronic, optical, magnetic, or any other computer-readable medium.

[0071] Although specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it should be understood that the features of the various embodiments and examples of the present application are examples and are not intended to be limiting. In other words, the present application may be implemented in other ways without departing from the principles of the present application, including new embodiments formed by combining features of the various embodiments and examples.

Claims

1. A system for detecting the brake status of a conveying device, characterized in that: The system comprises: A resistance detection component, which is used to detect the resistance of the brake; A voltage collection component, which is used to collect the brake voltage of the brake; A memory for storing instructions; A processor configured to execute the instructions and when executing the instructions: calculating the temperature of the brake based on the initial resistance of the brake and the detected resistance; Determining the state of the brake according to the calculated temperature and the acquired brake-lifting voltage; and When it is determined that the state of the brake is abnormal, a signal indicating the abnormal state is generated.

2. The system according to claim 1, characterized in that When executing the instruction, the processor determines the state of the brake according to the calculated temperature and the acquired brake-lifting voltage through the following operations: Based on the calculated temperature, the brake voltage is compared with an upper voltage threshold; When the brake-lifting voltage is greater than the voltage upper limit threshold, it is determined that the brake state is abnormal.

3. The system according to claim 2, characterized in that When executing the instruction, the processor further: Comparing the brake-lifting voltage with a voltage lower threshold; When the brake-lifting voltage is less than the voltage upper limit threshold but greater than the voltage lower limit threshold, generating an early warning signal; as well as When the brake-lifting voltage is less than the voltage lower limit threshold, a signal indicating that the brake state is normal is generated or no signal is generated.

4. The system according to any one of claims 1 to 3, characterized in that: The system further includes an output device, which includes one or both of a display module and a communication module, and the display module includes one or more of a display screen, an indicator light, and a voice output device.

5. An electronic device for detecting the brake status of a conveyor device, characterized in that: The electronic device comprises: A first connection portion, which is used to obtain the resistance of the brake; A second connection portion, which is used to obtain a brake-lifting voltage of the brake; A memory for storing instructions; A processor configured to execute the instructions and when executing the instructions: calculating a temperature of the brake based on the initial resistance of the brake and the acquired resistance; Determining the state of the brake according to the calculated temperature and the acquired brake-lifting voltage; and When it is determined that the state of the brake is abnormal, a signal indicating the abnormal state is generated.

6. The electronic device according to claim 5, characterized in that: When executing the instruction, the processor determines the state of the brake according to the calculated temperature and the acquired brake voltage through the following operations: Based on the calculated temperature, the brake voltage is compared with an upper voltage threshold; When the brake-lifting voltage is greater than the voltage upper limit threshold, it is determined that the state of the brake is abnormal.

7. The electronic device according to claim 6, characterized in that: When executing the instruction, the processor further: Comparing the brake-lifting voltage with a voltage lower threshold; When the gate voltage is less than the upper voltage threshold but greater than the lower voltage threshold, a warning signal is generated; as well as When the brake-lifting voltage is less than the voltage lower limit threshold, a signal indicating that the brake state is normal is generated or no signal is generated.

8. The electronic device according to any one of claims 5 to 7, characterized in that: The first connecting portion includes: a signal receiving portion and a resistance detecting component.

9. The electronic device according to any one of claims 5 to 7, characterized in that: The second connecting part includes: a signal receiving part and a voltage collecting component.

10. The electronic device according to any one of claims 5 to 7, characterized in that: The system further includes an output device, which includes one or both of a display module and a communication module, and the display module includes one or more of a display screen, an indicator light, and a voice output device.

11. A method for detecting the brake state of a conveying device, characterized in that: The method comprises: obtaining the resistance of the brake; Obtaining the brake voltage of the brake; calculating a temperature of the brake based on the initial resistance of the brake and the acquired resistance; Determining the state of the brake according to the calculated temperature and the acquired brake voltage; and In the event that a state of the brake is determined to be abnormal, a signal indicative of the state is generated.

12. The method according to claim 11, characterized in that The step of determining the state of the brake based on the calculated temperature and the acquired brake-lifting voltage includes: Based on the calculated temperature, the brake voltage is compared with an upper voltage threshold; When the brake-lifting voltage is greater than the voltage upper limit threshold, it is determined that the state of the brake is abnormal.

13. The method according to claim 12, characterized in that The method further comprises: Comparing the brake-lifting voltage with a voltage lower threshold; When the brake-lifting voltage is less than the voltage upper limit threshold but greater than the voltage lower limit threshold, generating an early warning signal; and When the brake-lifting voltage is less than the voltage lower limit threshold, a signal indicating that the brake state is normal is generated or no signal is generated.

14. The method according to any one of claims 11 to 13, characterized in that The generated signal representing the brake state is output.

15. The system according to any one of claims 1 to 4, the electronic device according to any one of claims 5 to 10, the method according to any one of claims 11 to 14, characterized in that: The conveying device is an elevator.

16. A non-transitory storage medium for storing program instructions, which implement the method according to any one of claims 11 to 14 when the program instructions are executed.

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