Detection circuit and elevator

Abstract

The embodiment of the invention relates to the field of circuits, and provides a detection circuit and an elevator, the detection circuit comprises a plurality of detection modules, each detection module is electrically connected with a plurality of switch modules of different types, the detection modules are used for detecting the on-off state of each switch module connected with the detection modules and generating and outputting on-off state signals, each detection module is electrically connected, so that each detection module receives all switch state signals output by other detection modules; the control module is electrically connected with one detection module and is used for acquiring all the switch state signals and adjusting the working state of the control module, and different switch modules correspond to different delays in the delay off states; and the execution module is electrically connected with the control module and controls a brake device of the elevator to be started or disconnected, and the delay time required for disconnection of the brake device is different if the delay corresponding to the delay disconnection state of the control module is different. The accuracy of fault positioning can be improved.

Description

Technical Field

[0001] The disclosed embodiments relate to the field of circuits, and in particular to a detection circuit and an elevator. Background Art

[0002] With the development of cities, high-rise buildings have been built frequently, and the use of elevators has become more and more popular. An elevator is a device that moves vertically between different floors in a shaft. There are car doors on the elevator car, and corresponding hall doors on the shaft wall lead to each floor. The opening of the car door and hall door allows passengers to enter and exit the car.

[0003] To ensure the safe operation of the elevator, multiple electrical safety devices are installed on the elevator. The elevator can only operate when each electrical safety device is normal. Summary of the invention

[0004] The embodiments of the present disclosure provide a detection circuit and an elevator, which can at least improve the accuracy of fault location.

[0005] According to some embodiments of the present disclosure, on the one hand, the embodiments of the present disclosure provide a detection circuit for an elevator, comprising: a plurality of detection modules, each of which is electrically connected to a plurality of switch modules of different types, any of which includes one or a plurality of switches of the same type connected in series, the detection module being used to detect the switch state of each switch module connected to the detection module, and to generate and output a switch state signal corresponding to the on state of each switch module, wherein each of the detection modules is electrically connected via a communication bus so that each of the detection modules receives all of the switch state signals output by the remaining detection modules; a control module, which is electrically connected to one of the detection modules and is used to obtain all of the switch state signals. signal, and adjusts the working state of the control module in response to the switch state signal, wherein, if all the switch state signals represent that all the switch modules are closed, the control module is in the on state, and if one of the switch state signals represents that the corresponding switch module is disconnected, the control module has a delayed disconnection state corresponding to the disconnected switch module, and the delays corresponding to the delayed disconnection states of different switch modules are different; an execution module, the execution module is electrically connected to the control module, and controls the brake device of the elevator to be turned on or off in response to the working state of the control module, wherein the delays corresponding to the delayed disconnection states of the control modules are different, and the delay time required for the brake device to be disconnected is different.

[0006] In some embodiments, the number of the switch modules connected to the detection module is N; the types of the N switch modules are classified according to the risk levels, and are divided into the first severity level, the second severity level to the Nth severity level, wherein the first severity level corresponds to the highest risk, and the Nth severity level corresponds to the lowest risk; the higher the risk level of the disconnected switch module, the shorter the delay corresponding to the delayed disconnection state.

[0007] In some embodiments, the control module includes: a relay, the relay includes a contact switch, and the contact switch receives the switch status signal to close or open; wherein, when all the switch status signals indicate that all the switch modules are closed, the contact switch is closed; when one of the switch status signals indicates that the corresponding switch module is disconnected, the contact switch is disconnected after a preset delay, wherein the higher the severity level of the disconnected switch module, the shorter the preset delay.

[0008] In some embodiments, each of the detection modules includes: a first detection unit, which is electrically connected to the multiple different types of switch modules and outputs a first switch state signal; a second detection unit, which is electrically connected to the multiple different types of switch modules and outputs a second switch state signal, and the first detection unit and the second detection unit of the same detection module are electrically connected to the same switch module; wherein the control module receives the first switch state signal and the second switch state signal.

[0009] In some embodiments, the control module includes: a first relay, the first relay includes a first contact switch, the first contact switch receives the first switch status signal to close or open; a second relay, the second relay includes a second contact switch, the second contact switch receives the second switch status signal to close or open; wherein, when the first switch status signal indicates that all the switch modules are closed, the first contact switch is closed, and when the second switch status signal indicates that all the switch modules are closed, the second contact switch is closed.

[0010] In some embodiments, the first contact switch is connected in series with the second contact switch.

[0011] In some embodiments, the control module also includes: a control unit, which detects the elevator position, door opening and closing status or destination floor of the elevator and generates an elevator status signal; a third relay, which includes a third contact switch, and the third contact switch receives the elevator status signal to close or open.

[0012] In some embodiments, the third relay includes: a fourth relay, the fourth relay includes a fourth contact switch, the fourth contact switch receives the elevator status signal to close or open; a fifth relay, the fifth relay includes a fifth contact switch, the fifth contact switch receives the elevator status signal to close or open; the fourth contact switch is connected in series with the fifth contact switch.

[0013] In some embodiments, the control module is electrically connected to the detection module that is closest to it.

[0014] According to some embodiments of the present disclosure, on the other hand, an elevator is provided, comprising part or all of the detection circuit as described above.

[0015] The technical solution provided by the embodiments of the present disclosure has at least the following advantages: first, the switches are classified, and a detection module is electrically connected to multiple switch modules through a detection module, so that multiple switch modules of different types can be detected through the detection module, and each detection module is electrically connected through a communication bus, that is, each detection module can obtain the opening state of the switch modules in all detection modules from each other, and then electrically connected to a detection module through a control module. In this way, all switch status signals can be obtained through a control module, and when all switch status signals indicate that all switch modules are closed, the control module is in the on state, and then the execution module is controlled, and the fault can be clearly located, and can be located to a certain switch or a certain type of switch, thereby reducing the difficulty of troubleshooting.

[0016] On the other hand, the control module also has a delayed disconnection state corresponding to the disconnected switch module, and the delays corresponding to the delayed disconnection states of different switch modules are different. In this way, a control module is added, so that different control measures can be taken for different types of switch modules to take into account the safety of the detection circuit and the system availability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings, and these exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise specified, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the traditional technology, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A circuit diagram of a detection circuit provided in an embodiment of the present disclosure;

[0019] Figure 2 A circuit diagram of another detection circuit provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] As can be seen from the background technology, there are many elevator safety switches, which are scattered in layout and divided into different types. When different types of safety switches are activated, different processing methods need to be adopted. The conventional processing method is to connect the switches in series to the control system and control the corresponding actuators (host, brake, etc.).

[0021] The related technology has an ambiguous problem when locating faults. When any safety switch is actuated, the system can only recognize the action of the safety switch, but cannot locate which specific switch or type of switch action it is. The processing method after the switch is actuated is single, and only one control method can be executed, and the control flexibility is poor. Moreover, the related technology also has the problem of large voltage drop. After multiple safety switches are connected in series, the line voltage drop is large due to the wire impedance and the switch impedance, and a higher voltage level needs to be used, which results in poor safety.

[0022] The disclosed embodiment provides a detection circuit, which first classifies switches and electrically connects multiple switch modules through a detection module, so that multiple switch modules of different types can be detected through the detection module, and each detection module is electrically connected through a communication bus, that is, each detection module can obtain the opening state of the switch modules in all detection modules from each other, and then electrically connected to a detection module through a control module. In this way, all switch status signals can be obtained through a control module, and when all switch status signals indicate that all switch modules are closed, the control module is in the on state, and then controls the execution module, and the fault can be clearly located, and can be located to a certain switch or a certain type of switch, thereby reducing the difficulty of troubleshooting.

[0023] On the other hand, the control module also has a delayed disconnection state corresponding to the disconnected switch module, and the delays corresponding to the delayed disconnection states of different switch modules are different. In this way, a control module is added, so that different control measures can be taken for different types of switch modules to take into account the safety of the detection circuit and the system availability.

[0024] Terms such as first or second can be used to describe various components, but these components are not limited by the above terms. The above terms are used to distinguish one component from another component, for example, without departing from the scope of the concept according to the present disclosure, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component.

[0025] In addition, "connected / coupled" means that one component is directly electrically coupled to another component or is indirectly electrically coupled through another component. The singular form may include the plural form unless explicitly stated in the sentence. In addition, "include / comprise" or "includes / comprises" used in this specification indicates that one or more components, steps, operations, and elements exist or have been added. The specific structural or functional descriptions of the examples of the implementation of the concepts disclosed in this specification are only illustrated to describe the examples of the implementation of the concepts, and the examples of the implementation of the concepts can be implemented in various forms, but these descriptions are not limited to the examples of the implementation described in this specification.

[0026] According to the concept, various modifications and changes can be applied to the examples of the embodiments, so that the examples of the embodiments will be illustrated in the drawings and described in the specification. However, the examples of the embodiments according to the concept are not limited to the specific embodiments, but include all changes, equivalents or replacements included in the spirit and technical scope of the present disclosure.

[0027] It should be understood that when an element is described as being "coupled" or "connected" to another element, the element may be directly coupled or directly connected to the other element, or may be coupled or connected to the other element through a third element. Conversely, it should be understood that when an element is referred to as being "directly coupled to" or "directly coupled to" another element, no other element is placed between them. Other expressions describing the relationship between components (i.e., "between" and "directly between" or "adjacent to" and "directly adjacent to") need to be interpreted in the same manner.

[0028] The terms used in this specification are only used to describe specific examples of the embodiments and are not intended to limit the present disclosure. If there is no clear opposite meaning in the context, the singular form may include the plural form. In this specification, it should be understood that the term "including" or "having" indicates the presence of the features, quantities, steps, operations, components, parts or combinations thereof described in the specification, but the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts or combinations thereof cannot be precluded.

[0029] If there is no contrary definition, all terms (including technical terms or scientific terms) used herein have the same meaning as those generally understood by ordinary technicians in the field. If the terms defined in the commonly used dictionary are not clearly defined in this specification, they should be interpreted as having the same meaning as in the context of the relevant technology, and not interpreted as ideal or overly formal meanings.

[0030] Descriptions of well-known components and processing techniques may be omitted so as not to unnecessarily obscure the embodiments of the disclosure.

[0031] Throughout the specification, the same reference numerals refer to the same elements. Thus, even if a reference numeral is not mentioned or described with reference to one figure, it may be mentioned or described with reference to another figure. Furthermore, even if a reference numeral is not shown in one figure, it may be mentioned or described with reference to another figure.

[0032] In addition, the logic level of the signal may be different or opposite to the described logic level. For example, a signal described as having a logic "high" level may alternatively have a logic "low" level, and a signal described as having a logic "low" level may alternatively have a logic "high" level.

[0033] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented.

[0034] refer to Figure 1 and Figure 2 , Figure 1 A circuit diagram of a detection circuit provided in an embodiment of the present disclosure; Figure 2 A circuit diagram of another detection circuit provided in an embodiment of the present disclosure.

[0035] In some embodiments, the detection circuit may include: multiple detection modules 100, each detection module 100 is electrically connected to multiple switch modules 103 of different types, any switch module 103 includes one or multiple switches of the same type connected in series, the detection module 100 is used to detect the switch state of each switch module 103 connected to the detection module 100, and generate and output a switch state signal corresponding to the on state of each switch module 103, wherein each detection module 100 is electrically connected to each other through a communication bus so that each detection module 100 receives all switch state signals output by the remaining detection modules 100.

[0036] The detection circuit may also include: a control module 101, the control module 101 is electrically connected to a detection module 100, and is used to obtain all switch state signals and adjust the working state of the control module 101 in response to the switch state signals, wherein if all switch state signals indicate that all switch modules 103 are closed, the control module 101 is in an on state, and if one of the switch state signals indicates that the corresponding switch module 103 is disconnected, the control module 101 has a delayed disconnection state corresponding to the disconnected switch module 103, and the delays corresponding to the delayed disconnection states of different switch modules 103 are different.

[0037] The detection circuit may also include: an execution module 102, which is electrically connected to the control module 101 and controls the elevator's braking device to be turned on or off in response to the working state of the control module 101, wherein the delay corresponding to the delayed off state of the control module 101 is different, and the delay time required for the braking device to be disconnected is different.

[0038] The disclosed embodiment provides a detection circuit, which first classifies switches and electrically connects a detection module 100 to multiple switch modules 103, so that the detection module 100 can detect multiple switch modules 103 of different types, and each detection module 100 is electrically connected to each other through a communication bus, that is, each detection module 100 can obtain the opening state of the switch modules 103 in all detection modules 100 from each other, and then electrically connect to a detection module 100 through a control module 101, so that all switch status signals can be obtained through a control module 101, and when all switch status signals indicate that all switch modules 103 are closed, the control module 101 is in the on state, and then controls the execution module 102, and the fault can be clearly located, and can be located to a certain switch or a certain type of switch, thereby reducing the difficulty of troubleshooting. On the other hand, the control module 101 also has a delayed disconnection state corresponding to the disconnected switch module 103, and the delays corresponding to the delayed disconnection states of different switch modules 103 are different. In this way, the control module 101 is also added, so that different control measures can be taken for different types of switch modules 103 to take into account the safety of the detection circuit and the system availability.

[0039] In some embodiments, the multiple switches in the detection circuit can be divided into zones first, each zone containing multiple switches, and then the switches in each zone are classified and electrically connected to the detection module 100 according to the classification. In other words, each zone corresponds to a detection module 100, and the switches in the corresponding area are detected by the detection module 100. The area corresponding to the detection module 100 is set, so that the area corresponding to the fault can be further determined. In addition, the switches in each zone have been classified in advance, so that it can be further confirmed which switch has an abnormality, thereby further improving the accuracy of fault detection.

[0040] In some embodiments, switches of each type are connected in series, and multiple switches of different types are connected in parallel and connected to the detection module.

[0041] In some embodiments, the switches may include: car top maintenance switch, safety clamp electrical switch, maintenance operation switch, maintenance up switch, maintenance down switch, car door lock switch, etc.; the switches may also include: buffer switch, clamping rope electrical switch, speed limiter electrical switch, upper limit switch, lower limit switch, floor door lock switch, etc.; the switches may also include: pit switch box emergency stop switch, speed limiter tensioning wheel broken rope switch, pit maintenance box switch, etc.

[0042] In some embodiments, the control module 101 is electrically connected to the nearest detection module 100. In this way, the wiring distance between the control module 101 and the detection module 100 can be reduced, thereby reducing the voltage drop of the line between the control module 101 and the detection module 100, enabling decentralized safety switch detection, reducing the impedance of a single line, and the system can use a low voltage level safety voltage.

[0043] In some embodiments, the number of switch modules 103 connected to the detection module 100 is N; the types of the N switch modules 103 are classified according to the risk level, and are divided into the first severity level, the second severity level to the Nth severity level, wherein the first severity level corresponds to the highest risk, and the Nth severity level corresponds to the lowest risk; the higher the risk level of the disconnected switch module 103, the shorter the delay corresponding to the delayed disconnection state. In other words, when classifying the switch, first determine the risk corresponding to the switch. For example, the switch is a speed limiter tensioner rope break switch, and correspondingly, the speed limiter tensioner rope break switch is determined to be the first severity level. When the detection module 100 detects that the speed limiter tensioner rope break switch is abnormal, it is immediately disconnected, so that the corresponding control strategy can be selected according to different risk levels. Compared with the related art, the related art usually connects all switches in series. When any switch is disconnected, the control module outputs the same control signal, and the control method is single. The embodiment of the present disclosure outputs different control signals according to switches of different risk levels, so that safety and system availability can be taken into account, and frequent failures or people trapped can be avoided.

[0044] For example, the types of switches are divided into the first severity level, the second severity level to the Nth severity level. When the detection module 100 receives a switch state signal of a switch of the first severity level, for example, the switch of the first severity level is disconnected, at this time, the control module 101 controls the execution module 102 to execute the first severity execution control, that is, to control the execution module 102 to be disconnected within X unit time; when the detection module 100 receives a switch state signal of a switch of the second severity level, for example, the switch of the second severity level is disconnected, at this time, the detection module 100 controls the execution module 102 to execute the second severity execution control, that is, to control the execution module 102 to be disconnected within X+1 unit time; similarly, when the detection module 100 receives a switch state signal of a switch of the nth severity level, for example, the switch of the nth severity level is disconnected, at this time, the detection module 100 controls the execution module 102 to execute the Nth severity execution control, that is, to control the execution module 102 to be disconnected within X+n unit time.

[0045] It is understandable that the higher the risk level, the more necessary it is to immediately stop all work. Therefore, according to different classifications, switch settings corresponding to control signals of different severity levels can be used to add different control strategies. Moreover, when the risk level is not high, the current work can continue to be performed. Taking elevator operation as an example, when the risk level is not high, the elevator will continue to run until all people in the elevator are emptied, and then the elevator will be stopped, which can also improve the customer experience.

[0046] It should be noted that the X unit time in the above may be a fixed delay time of the system, and 1 unit time may be 1ms, 1s, 2s, etc., which may be adjusted accordingly according to specific circumstances and requirements.

[0047] In some embodiments, the switches may be classified according to their functions. For example, switches may be classified as switches that can perform emergency power operation or switches that cannot perform emergency power operation. Installation and rescue may be limited, so that different response strategies may be implemented according to different switches.

[0048] In some embodiments, the control module 101 includes: a relay 111, the relay 111 includes a contact switch 121, and the contact switch 121 receives a switch status signal to close or open; wherein, when all switch status signals indicate that all switch modules 103 are closed, the contact switch 121 is closed; when one of the switch status signals indicates that the corresponding switch module 103 is disconnected, the contact switch 121 is disconnected after a preset delay, wherein the higher the severity level of the disconnected switch module 103, the shorter the preset delay.

[0049] The switch status signal is received through the relay 111, so when the switch in any switch module 103 is disconnected, the contact switch 121 will be controlled to be disconnected, and the contact switch 121 will select the delayed disconnection time according to the severity level of the switch module 103, so that different control strategies can be selected to take into account both safety and system availability.

[0050] In some embodiments, the relay 111 further includes a coil, which is electrically connected to the contact switch 121 , and the coil receives a switch state signal to control the contact switch 121 to open or close.

[0051] In some embodiments, each of the detection modules 100 includes: a first detection unit 110, the first detection unit 110 is electrically connected to multiple different types of switch modules 103, and outputs a first switch state signal; a second detection unit 120, the second detection unit 120 is electrically connected to multiple different types of switch modules 103, and outputs a second switch state signal, and the first detection unit 110 and the second detection unit 120 of the same detection module 100 are electrically connected to the same switch module 103; wherein the control module 101 receives the first switch state signal and the second switch state signal.

[0052] By setting each detection module 100 to include a first detection unit 110 and a second detection unit 120, a double redundant design is implemented. When any one of the first detection unit 110 and the second detection unit 120 detects that the switch module 103 is abnormal, both output a corresponding control signal, thereby increasing the detection accuracy of the detection module 100. Moreover, for the detection module 100, when any one of the first detection unit 110 and the second detection unit 120 has a problem, the detection module 100 will still work normally, thereby increasing the reliability of the detection module 100.

[0053] In some embodiments, only one detection unit may be set in the detection module 100, or more detection units may be set. The more detection units there are, the higher the reliability of detection by the detection module 100 will be, and the fewer detection units there are, the lower the cost of the detection module 100 will be.

[0054] In some embodiments, the control module 101 includes: a first relay 131, the first relay 131 includes a first contact switch 141, and the first contact switch 141 receives a first switch state signal to close or open; a second relay 151, the second relay 151 includes a second contact switch 161, and the second contact switch 161 receives a second switch state signal to close or open; wherein, when the first switch state signal indicates that all switch modules 103 are closed, the first contact switch 141 is closed, and when the second switch state signal indicates that all switch modules 103 are closed, the second contact switch 161 is closed.

[0055] For the solution in which the detection module 100 includes a first detection unit 110 and a second detection unit 120, the control module 101 is set to include a first relay 131 and a second relay 151. The first detection unit 110 transmits a first switch state signal to the first relay 131, thereby controlling the closing and opening of the first contact switch 141. The second switch state signal is transmitted to the second relay 151 through the second detection unit 120, thereby controlling the closing and opening of the second contact switch 161. A double redundant design is implemented by the first relay 131 and the second relay 151, thereby further improving the control reliability of the control module 101.

[0056] In some embodiments, the first contact switch 141 and the second contact switch 161 are connected in series to provide a control signal to the execution module 102. It can be understood that for the control module 101, the control module 101 actually outputs an enable signal. When any one of the first contact switch 141 and the second contact switch 161 is disconnected, the enable signal will not be output, and the execution module 102 will not work. Therefore, setting the control module 101 to include the first relay 131 and the second relay 151 can improve the reliability of the control execution module 102.

[0057] refer to Figure 1 In some embodiments, the control module 101 also includes: a control unit 171, which detects the elevator position, door opening and closing status or destination floor of the elevator and generates an elevator status signal; a third relay 181, which includes a third contact switch 191, and the third contact switch 191 receives the elevator status signal to close or open.

[0058] For the control module 101, the elevator position, door opening and closing status or destination floor of the elevator is also detected, so as to implement the detection of the operating status of the elevator. In this way, when an abnormality occurs in the elevator, the third contact switch 191 of the third relay 181 is controlled to be disconnected, so that the control execution module 102 does not receive the enable signal, and the control execution module 102 does not work, thereby improving the reliability of the control of the control module 101.

[0059] refer to Figure 2 In some embodiments, the third relay 181 includes: a fourth relay 201, the fourth relay 201 includes a fourth contact switch 221, and the fourth contact switch 221 receives an elevator status signal to close or open; a fifth relay 211, the fifth relay 211 includes a fifth contact switch 231, and the fifth contact switch 231 receives an elevator status signal to close or open; the fourth contact switch 221 and the fifth contact switch 231 are connected in series.

[0060] By setting the third relay 181 to include the fourth relay 201 and the fifth relay 211 to form a double redundant design, when the fourth relay 201 receives an abnormal signal, the fourth contact switch 221 will be controlled to be disconnected; when the fifth relay 211 receives an abnormal signal, the fifth contact switch 231 will be controlled to be disconnected, thereby further improving the detection accuracy of the detection circuit.

[0061] In some embodiments, the third relay 181 may include more relays to further improve the control accuracy of the third relay 181 , or the third relay 181 may include only one relay to reduce the cost of the entire detection circuit.

[0062] In some embodiments, the fourth contact switch 221 and the fifth contact switch 231 are connected in series, so that when either the fourth contact switch 221 or the fifth contact switch 231 is disconnected, the control module 101 will not provide a control signal to the execution module 102, thereby further improving the reliability of the control execution module 102.

[0063] In some embodiments, the first contact switch 141, the second contact switch 161, the fourth contact switch 221 and the fifth contact switch 231 can also be connected in series. In this way, if any switch among the first contact switch 141, the second contact switch 161, the fourth contact switch 221 and the fifth contact switch 231 is disconnected, no signal will be provided to the execution unit.

[0064] The following will be combined Figure 2 A detailed description is provided for an embodiment of the present disclosure:

[0065] When any one of the first detection unit 110 or the second detection unit 120 detects that a certain switch or a certain type of switch is disconnected, the detection module 100 will output a corresponding control signal, that is, when the switch is disconnected, the detection module 100 will output a switch state signal, and the corresponding first detection unit 110 provides a first switch state signal to the first relay 131, and the second detection unit 120 provides a second switch state signal to the second relay 151, and the first relay 131 controls the first contact switch 141 to be disconnected, and the second relay 151 controls the second contact switch 161 to be disconnected, so that the execution unit does not accept the enable signal and does not work; on the other hand, the control unit 171 also detects the operating status of the elevator in real time. When there is a problem with the elevator status, the control unit 171 will also provide an elevator status signal to the fourth relay 201 and the fifth relay 211, and the fourth relay 201 controls the fourth contact switch 221 to be disconnected, and the fifth relay 211 controls the fifth contact switch 231 to be disconnected, so that the execution unit does not accept the enable signal and does not work.

[0066] The embodiment of the present disclosure provides a detection circuit, which first classifies switches, and electrically connects a detection module 100 with multiple switch modules 103, so that the detection module 100 detects multiple switch modules 103 of different types, and each detection module 100 is electrically connected through a communication bus, that is, each detection module 100 can mutually obtain the open state of the switch modules 103 in all detection modules 100, and then, it is electrically connected to a detection module 101 through a control module 101, so that all switch state signals can be obtained through a control module 101, and when all switch state signals indicate that all switch modules 103 are closed, the control module 101 is in a conducting state, and then controls the execution module 102. On the other hand, the control module 101 also has a delayed disconnection state corresponding to the disconnected switch module 103, and the delay corresponding to the delayed disconnection state of different switch modules 103 is different. In this way, the control module 101 is also added, so that different control measures can be taken for different types of switch modules 103 to take into account the safety of the detection circuit and the availability of the system.

[0067] Another embodiment of the present disclosure further provides an elevator, which may include the above-mentioned detection circuit. It should be noted that the same or corresponding parts of the above-mentioned embodiments can be referred to the corresponding description of the above-mentioned embodiments, and will not be repeated below.

[0068] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present disclosure, so the protection scope of the embodiments of the present disclosure shall be based on the scope defined in the claims.

Claims

1. A detection circuit for an elevator, characterized in that: include: A plurality of detection modules, each of which is electrically connected to a plurality of switch modules of different types, any of which includes one or a plurality of switches of the same type connected in series, the detection module being used to detect the switch state of each switch module connected to the detection module, and to generate and output a switch state signal corresponding to the on state of each switch module, wherein each of the detection modules is electrically connected to each other via a communication bus, so that each of the detection modules receives all of the switch state signals output by the remaining detection modules; A control module, the control module is electrically connected to one of the detection modules, and is used to obtain all the switch state signals, and adjust the working state of the control module in response to the switch state signals, wherein if all the switch state signals indicate that all the switch modules are closed, the control module is in an on state, and if one of the switch state signals indicates that the corresponding switch module is disconnected, the control module has a delayed disconnection state corresponding to the disconnected switch module, and the delays corresponding to the delayed disconnection states of different switch modules are different; an execution module, the execution module is electrically connected to the control module, and controls the brake device of the elevator to be turned on or off in response to the working state of the control module, wherein the delays corresponding to the delayed disconnection states of the control modules are different, and the delay time required for the brake device to be disconnected is different.

2. The detection circuit according to claim 1, characterized in that: The number of the switch modules connected to the detection module is N; the types of the N switch modules are classified according to the risk levels, and are divided into the first severity level, the second severity level to the Nth severity level, wherein the first severity level corresponds to the highest risk, and the Nth severity level corresponds to the lowest risk; the higher the risk level of the disconnected switch module, the shorter the delay corresponding to the delayed disconnection state.

3. The detection circuit according to claim 2, characterized in that: The control module comprises: A relay, wherein the relay comprises a contact switch, and the contact switch is closed or opened upon receiving the switch state signal; Among them, when all the switch status signals indicate that all the switch modules are closed, the contact switch is closed; when one of the switch status signals indicates that the corresponding switch module is disconnected, the contact switch is disconnected after a preset delay, wherein the higher the severity level of the disconnected switch module, the shorter the preset delay.

4. The detection circuit according to claim 1, characterized in that: Each of the detection modules comprises: A first detection unit, the first detection unit is electrically connected to the plurality of different types of switch modules and outputs a first switch state signal; a second detection unit, the second detection unit being electrically connected to the plurality of switch modules of different types and outputting a second switch state signal, the first detection unit and the second detection unit of the same detection module being electrically connected to the same switch module; Wherein, the control module receives the first switch state signal and the second switch state signal.

5. The detection circuit according to claim 4, characterized in that: The control module comprises: A first relay, wherein the first relay includes a first contact switch, and the first contact switch is closed or opened upon receiving the first switch state signal; A second relay, wherein the second relay includes a second contact switch, and the second contact switch is closed or opened upon receiving the second switch state signal; When the first switch state signal indicates that all the switch modules are closed, the first contact switch is closed; and when the second switch state signal indicates that all the switch modules are closed, the second contact switch is closed.

6. The detection circuit according to claim 5, characterized in that: The first contact switch is connected in series with the second contact switch.

7. The detection circuit according to claim 1 or 6, characterized in that: The control module also includes: A control unit, wherein the control unit detects an elevator position, a door opening and closing state, or a destination floor of the elevator and generates an elevator state signal; The third relay includes a third contact switch, and the third contact switch receives the elevator status signal to close or open.

8. The detection circuit according to claim 7, characterized in that: The third relay comprises: a fourth relay, wherein the fourth relay includes a fourth contact switch, and the fourth contact switch is closed or opened upon receiving the elevator status signal; a fifth relay, wherein the fifth relay includes a fifth contact switch, and the fifth contact switch is closed or opened upon receiving the elevator status signal; The fourth contact switch is connected in series with the fifth contact switch.

9. The detection circuit according to claim 1, characterized in that: The control module is electrically connected to the detection module that is closest to it.

10. An elevator, characterized in that: The detection circuit comprises the detection circuit as claimed in any one of claims 1 to 9.

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