Detection circuit and elevator

Abstract

The embodiment of the utility model 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] Embodiments of the present disclosure 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 are emerging frequently, and the use of elevators is becoming more and more popular. An elevator is a device that moves vertically between different floors in a hoistway. There is a car door on the elevator car, and corresponding landing doors are provided on the hoistway wall leading to each floor. The opening of the car door and the landing 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 Utility Model

[0004] 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, an embodiment of the present disclosure provides a detection circuit for an elevator, including: a plurality of detection modules, each of the detection modules is electrically connected to a plurality of switch modules of different types, and any one of the switch modules includes one or a plurality of switches of the same type connected in series. The detection module is used to detect the switch state of each switch module connected to the detection module, generate and output a switch state signal corresponding to the open state of each switch module. Among them, each of the detection modules is electrically connected through a communication bus, so that each detection module receives all 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. Among them, if all the switch state signals indicate that all the switch modules are closed, the control module is in a conducting state. If one of the switch state signals indicates that the corresponding switch module is open, the control module has a delayed off state corresponding to the open switch module, and the delays corresponding to the delayed off states of different switch modules are different; an execution module, the execution module is electrically connected to the control module, and in response to the working state of the control module, controls the opening or closing of the braking device of the elevator. Among them, if the delays corresponding to the delayed off states of the control module are different, the delay time required for the braking device to open 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 level, and are divided into a first strict level, a second strict level to an Nth strict level, wherein the first strict level corresponds to the highest risk and the Nth strict 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 closes or opens in response to the switch state signal; wherein, when all the switch state signals indicate that all the switch modules are closed, the contact switch closes; when one of the switch state signals indicates that the corresponding switch module is open, the contact switch opens after a preset delay, and the higher the strict level of the open switch module, the shorter the preset delay.

[0008] In some embodiments, each detection module includes: a first detection unit, the first detection unit is electrically connected to the multiple different types of switch modules and outputs a first switch state signal; a second detection unit, the second detection unit 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, and the first contact switch closes or opens in response to the first switch state signal; a second relay, the second relay includes a second contact switch, and the second contact switch closes or opens in response to the second switch state signal; wherein, when the first switch state signal indicates that all the switch modules are closed, the first contact switch closes, and when the second switch state signal indicates that all the switch modules are closed, the second contact switch closes.

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

[0011] In some embodiments, the control module further includes: a control unit, the control unit detects the elevator position, the door opening and closing state or the destination floor of the elevator and generates an elevator state signal; a third relay, the third relay includes a third contact switch, and the third contact switch closes or opens in response to the elevator state signal.

[0012] In some embodiments, the third relay includes: a fourth relay which includes a fourth contact switch inside, and the fourth contact switch closes or opens upon receiving the elevator status signal; a fifth relay which includes a fifth contact switch inside, and the fifth contact switch closes or opens upon receiving the elevator status signal; and the fourth contact switch and the fifth contact switch are connected in series.

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

[0014] According to some embodiments of the present disclosure, on the other hand, the present disclosure also provides an elevator including some or all of the above detection circuits.

[0015] The technical solutions provided by the embodiments of the present disclosure have at least the following advantages: First, the switches are classified, and a detection module is electrically connected to multiple switch modules, so that the detection module can detect multiple switch modules of different types. Moreover, each detection module is electrically connected to each other through a communication bus. That is to say, each detection module can obtain the on states of the switch modules in all detection modules. Then, the control module is electrically connected to one detection module. In this way, all switch status signals can be obtained through one control module, and when all switch status signals indicate that all switch modules are closed, the control module is in a conducting state, thereby controlling the execution module. Moreover, the fault can be clearly located, and it can be located to a certain one or a certain type of switch, reducing the difficulty of fault 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, the control module is further added, so that different control measures can be taken for different types of switch modules to balance the safety of the detection circuit and the system availability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments unless otherwise stated. The figures in the drawings do not constitute a scale limitation; in order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the conventional technology, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a circuit diagram of a detection circuit provided by an embodiment of the present disclosure;

[0019] Figure 2 Another circuit diagram of the detection circuit provided by the embodiment of the present disclosure. Specific embodiments

[0020] As can be seen from the background art, there are many elevator safety switches, which are scattered in layout and divided into different types. When different types of safety switches act, different processing methods need to be taken. The conventional processing method is to connect the switches in series and then connect them to the control system, and control the corresponding execution components (main machine, brake, etc.).

[0021] There are fuzzy problems in fault location in the related art. When any safety switch acts, the system can only recognize that the safety switch acts, but cannot locate which specific switch or which type of switch acts; the processing method after the switch acts is single, and only one control method can be executed, so the control flexibility is poor; moreover, there is also a problem of large voltage drop in the related art. After multiple safety switches are connected in series, due to the wire impedance and switch impedance, the line voltage drop is large, and a higher voltage level needs to be used, resulting in poor safety.

[0022] The embodiment of the present disclosure provides a detection circuit. First, the switches are classified, and a detection module is electrically connected to multiple switch modules, so as to detect multiple switch modules of different types through the detection module. Moreover, each detection module is electrically connected through a communication bus. That is to say, each detection module can obtain the opening states of the switch modules in all detection modules from each other. After that, a control module is electrically connected to a detection module. In this way, all switch state signals can be obtained through a control module, and when all switch state signals indicate that all switch modules are closed, the control module is in a conducting state, and then the execution module is controlled. Moreover, the fault can be clearly located, and it can be located to a certain switch or a certain type of switch, reducing the difficulty of fault 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 corresponding to different switch modules are different. In this way, the control module is also added, so that different control measures can be taken for different types of switch modules, taking into account the safety of the detection circuit and the availability of the system.

[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. For example, without departing from the scope of the concept of the present disclosure, the first component can be called the second component, and similarly, the second component can be called the first component.

[0025] In addition, "connected / coupled" means that one component is directly electrically coupled to another component or indirectly electrically coupled through another component. As long as it is not explicitly stated in the sentence, the singular form may include the plural form. In addition, "comprising / including" or "comprises / includes" used in this specification means the presence or addition of one or more components, steps, operations, and elements. The specific structural or functional descriptions of the examples of the embodiments according to the concepts disclosed in this specification are only illustrated to describe the examples of the embodiments according to the concepts, and the examples of the embodiments according to the concepts can be implemented in various forms, but these descriptions are not limited to the examples of the embodiments described in this specification.

[0026] According to the concept, various modifications and changes can be applied to the examples of the embodiments, such 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 substitutions included within the spirit and technical scope of the present disclosure.

[0027] It should be understood that when describing that one element is "coupled" or "connected" to another element, the element can be directly coupled or directly connected to another element, or can be coupled or connected to another element through a third element. Conversely, it should be understood that when an element is referred to as "directly connected to" or "directly coupled to" another element, no other elements are disposed therebetween. 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 way.

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

[0029] If there is no contrary definition, all terms used herein (including technical terms or scientific terms) have the same meaning as generally understood by those of ordinary skill in the art. If the terms defined in the common dictionary are not clearly defined in this specification, they should be interpreted as having the same meaning as in the context of the related art, and not be 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 present disclosure.

[0031] Throughout the specification, the same reference numerals refer to the same elements. Therefore, even if a reference numeral is not mentioned or described with reference to one drawing, it can be mentioned or described with reference to another drawing. In addition, even if a reference numeral is not shown in one drawing, it can be mentioned or described with reference to another drawing.

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

[0033] The embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in the embodiments of the present disclosure, many technical details are provided to help the reader 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 still be implemented.

[0034] Reference Figure 1 and Figure 2 , Figure 1 is a circuit diagram of a detection circuit provided by an embodiment of the present disclosure; Figure 2 is a circuit diagram of another detection circuit provided by an embodiment of the present disclosure.

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

[0036] The detection circuit may further include: a control module 101, the control module 101 is electrically connected to one detection module 100, and is configured to obtain all the switch state signals and adjust the working state of the control module 101 in response to the switch state signals. Wherein, if all the switch state signals indicate that all the switch modules 103 are closed, the control module 101 is in a conducting state; if one of the switch state signals indicates that the corresponding switch module 103 is open, the control module 101 has a delayed-off state corresponding to the open switch module 103, and the delays corresponding to the delayed-off states of different switch modules 103 are different.

[0037] The detection circuit may further include: an execution module 102, which is electrically connected to the control module 101 and controls the elevator braking device to be turned on or off in response to the operating state of the control module 101. Among them, if the delay corresponding to the delayed disconnection state of the control module 101 is different, the delay time required for the braking device to disconnect is different.

[0038] The embodiment of the present disclosure provides a detection circuit. First, the switches are classified, and a detection module 100 is electrically connected to a plurality of switch modules 103 to detect the plurality of switch modules 103 of different types through the detection module 100. Moreover, each detection module 100 is electrically connected through a communication bus. That is to say, each detection module 100 can obtain the on states of the switch modules 103 in all detection modules 100 from each other. After that, the control module 101 is electrically connected to a detection module 100. In this way, 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 the execution module 102 is controlled. Moreover, the fault can be clearly located, and it can be located to a certain switch or a certain type of switch, reducing the difficulty of fault 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 further added, so that different control measures can also be taken for different types of switch modules 103 to balance the safety of the detection circuit and the system availability.

[0039] In some embodiments, the multiple switches in the detection circuit can be partitioned first, each partition contains multiple switches, and then the switches in each partition are classified and electrically connected to the detection module 100 according to the classification. In other words, each partition corresponds to a detection module 100, and the switches in the corresponding area are detected through the detection module 100. By setting the area corresponding to the detection module 100, the area corresponding to the fault can be further determined. Coupled with the fact that the switches in each area have been classified in advance, it is possible to further confirm which switch is abnormal, thereby further improving the accuracy of fault detection.

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

[0041] In some embodiments, the switches may include: car top maintenance switch, safety gear 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 governor electrical switch, upper limit switch, lower limit switch, landing door lock switch, etc.; the switches may also include: pit switch box and emergency stop switch, speed governor tensioner rope break 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 allowing the system to use a low-voltage 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, divided into the first severe level, the second severe level to the Nth severe level, where the first severe level corresponds to the highest risk and the Nth severe 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 switches, first judge the risk corresponding to the switch. For example, if the switch is a speed governor tensioner rope break switch, correspondingly, judge that the speed governor tensioner rope break switch is at the first severe level. When the detection module 100 detects an abnormality of the speed governor tensioner rope break switch, it immediately disconnects. Thus, corresponding control strategies can be selected according to different risk levels. Compared with the related art, in the related art, usually all the switches are connected in series, and when any switch is disconnected, the control module outputs the same control signal, and the control method is single. In the embodiments of the present disclosure, different control signals are output corresponding to switches of different risk levels, thereby also taking into account safety and system availability, and avoiding frequent failures or trapping people, etc.

[0044] For example, the types of switches are divided into the first strict level, the second strict level to the Nth strict level. When the detection module 100 receives the switch state signal of the switch at the first strict level, for example, the switch at the first strict level is turned off. At this time, the control module 101 controls the execution module 102 to execute the first strict execution control, that is, to control the execution module 102 to turn off within X unit time. When the detection module 100 receives the switch state signal of the switch at the second strict level, for example, the switch at the second strict level is turned off. At this time, the detection module 100 controls the execution module 102 to execute the second strict execution control, that is, to control the execution module 102 to turn off within X + 1 unit time. Similarly, when the detection module 100 receives the switch state signal of the switch at the nth strict level, for example, the switch at the nth strict level is turned off. At this time, the detection module 100 controls the execution module 102 to execute the Nth strict execution control, that is, to control the execution module 102 to turn off within X + n unit time.

[0045] It can be understood that the higher the risk level, the more urgently all work needs to be aborted. Therefore, corresponding control signals with different strict levels are set according to different switches, so that different control strategies can be added. Moreover, when the risk level is not high, the current work can continue to be executed. Taking the elevator operation as an example, when the risk level is not high, the elevator will continue to run until the people in the elevator are emptied, and then the operation of the elevator will be aborted, thus improving the user experience of customers.

[0046] It should be noted that the above X unit time can be the fixed delay time of the system. 1 unit time can be 1 ms, 1 s, 2 s, etc., and can be adjusted according to specific situations and requirements.

[0047] In some embodiments, the classification of the switches can also be based on functions. For example, the switches can be divided into switches that can perform emergency power operation or switches that cannot perform emergency power operation, and installation and rescue can be limited, so as to execute different response strategies 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 closes or opens in response to the switch state signal. Among them, when all switch state signals indicate that all switch modules 103 are closed, the contact switch 121 closes; when one of the switch state signals indicates that the corresponding switch module 103 is open, the contact switch 121 opens after a preset delay. Among them, the higher the strict level of the open switch module 103, the shorter the preset delay.

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

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

[0051] In some embodiments, each detection module 100 includes: a first detection unit 110, the first detection unit 110 is electrically connected to a plurality of different types of switch modules 103, and outputs a first switch status signal; a second detection unit 120, the second detection unit 120 is electrically connected to a plurality of different types of switch modules 103, and outputs a second switch status signal, 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 status signal and the second switch status signal.

[0052] By setting each detection module 100 to include a first detection unit 110 and a second detection unit 120, a dual redundancy design is realized. When any one of the first detection unit 110 and the second detection unit 120 detects an abnormality in the switch module 103, a corresponding control signal will be output, so that the detection accuracy of the detection module 100 can be increased. 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, and the reliability of the detection module 100 can also be increased.

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

[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 closes or disconnects according to the first switch status signal; a second relay 151, the second relay 151 includes a second contact switch 161, and the second contact switch 161 closes or disconnects according to the second switch status signal; wherein, when the first switch status signal indicates that all switch modules 103 are closed, the first contact switch 141 closes, and when the second switch status signal indicates that all switch modules 103 are closed, the second contact switch 161 closes.

[0055] For the solution where the corresponding detection module 100 includes a first detection unit 110 and a second detection unit 120, the control module 101 is provided to include a first relay 131 and a second relay 151. A first switch state signal is transmitted from the first detection unit 110 to the first relay 131 to control the closing and opening of the first contact switch 141. A second switch state signal is transmitted from the second detection unit 120 to the second relay 151 to control the closing and opening of the second contact switch 161. A dual redundancy design is implemented through the first relay 131 and the second relay 151, thereby further improving the reliability of the control of the control module 101.

[0056] In some embodiments, the first contact switch 141 and the second contact switch 161 are 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 open, the enable signal will not be output, and the execution module 102 will not work. Therefore, providing the control module 101 with the first relay 131 and the second relay 151 can improve the reliability of controlling the execution module 102.

[0057] Reference Figure 1 , in some embodiments, the control module 101 further includes: a control unit 171 that detects the elevator position, door opening / closing state, or destination floor of the elevator and generates an elevator state signal; a third relay 181 that includes a third contact switch 191 inside, and the third contact switch 191 closes or opens upon receiving the elevator state signal.

[0058] For the control module 101, it also detects the elevator position, door opening / closing state, or destination floor of the elevator to thereby detect the operating state of the elevator. Thus, when the elevator malfunctions, the third contact switch 191 of the third relay 181 is also controlled to open, so that the execution module 102 does not receive the enable signal and the execution module 102 does not work, thereby further improving the reliability of the control of the control module 101.

[0059] Reference Figure 2 , in some embodiments, the third relay 181 includes: a fourth relay 201 that includes a fourth contact switch 221 inside, and the fourth contact switch 221 closes or opens upon receiving the elevator state signal; a fifth relay 211 that includes a fifth contact switch 231 inside, and the fifth contact switch 231 closes or opens upon receiving the elevator state signal; the fourth contact switch 221 and the fifth contact switch 231 are in series.

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

[0061] In some embodiments, the third relay 181 may also include a larger number of relays, thereby further improving the control accuracy of the third relay 181. The third relay 181 may also be provided with only one relay, thereby reducing 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 with each other. Thus, when any one of the fourth contact switch 221 and 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 controlling the 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 may also be connected in series with each other. In this way, when any one of 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 with Figure 2 to provide a detailed description of 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 status signal. Correspondingly, the first detection unit 110 provides a first switch status signal to the first relay 131, and the second detection unit 120 provides a second switch status signal to the second relay 151. The first relay 131 controls the first contact switch 141 to disconnect, and the second relay 151 controls the second contact switch 161 to disconnect, so that the execution unit does not receive an enable signal and does not work. On the other hand, the control unit 171 also continuously detects the operating status of the elevator. 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. The fourth relay 201 controls the fourth contact switch 221 to disconnect, and the fifth relay 211 controls the fifth contact switch 231 to disconnect, so that the execution unit does not receive an enable signal and does not work.

[0066] An embodiment of the present disclosure provides a detection circuit. First, switches are classified, and a detection module 100 is electrically connected to a plurality of switch modules 103, so as to detect different types of a plurality of switch modules 103 through the detection module 100. Moreover, each detection module 100 is electrically connected through a communication bus. That is to say, each detection module 100 can obtain the on states of the switch modules 103 in all detection modules 100 from each other. After that, a control module 101 is electrically connected to a detection module 100. In this way, 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 the execution module 102 is controlled. On the other hand, the control module 101 also has a delay-off state corresponding to the open switch module 103, and the delays corresponding to the delay-off states of different switch modules 103 are different. In this way, the control module 101 is further added, so that different control measures can also be taken for different types of switch modules 103, so as to balance the safety of the detection circuit and the system availability.

[0067] Another embodiment of the present disclosure further provides an elevator, which may include the above detection circuit. It should be noted that for the same or corresponding parts in the foregoing embodiments, reference may be made to the corresponding descriptions in the foregoing embodiments, and details will not be repeated hereinafter.

[0068] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present disclosure. In actual applications, various changes can be made in form and details 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. Therefore, the protection scope of the embodiments of the present disclosure should be determined by the scope defined by the claims.

Claims

1. A detection circuit for an elevator, characterized in that, Including: A plurality of detection modules, each of the detection modules is electrically connected to a plurality of switch modules of different types. Any of the switch modules includes one or a plurality of switches of the same type connected in series. The detection module is configured to detect the switch state of each of the switch modules connected to the detection module, generate and output a switch state signal corresponding to the on state of each of the switch modules. Among them, each of the detection modules is electrically connected through a communication bus, so that each of the detection modules receives all 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 configured to obtain all the switch state signals, and adjust the working state of the control module in response to the switch state signals. Among them, if all the switch state signals indicate that all the switch modules are closed, the control module is in a conducting state. If one of the switch state signals indicates that the corresponding switch module is open, the control module has a delayed off state corresponding to the open switch module, and the delays corresponding to the delayed off states of different switch modules are different; An execution module, the execution module is electrically connected to the control module, and controls the opening or closing of the braking device of the elevator in response to the working state of the control module. Among them, if the delays corresponding to the delayed off states of the control module are different, the delay time required for the braking device to open is different.

2. The detection circuit according to claim 1, wherein 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 level, and are divided into the first strict level, the second strict level to the Nth strict level. Among them, the first strict level corresponds to the highest risk, and the Nth strict level corresponds to the lowest risk; the higher the risk level of the open switch module, the shorter the delay corresponding to the delayed off state.

3. The detection circuit according to claim 2, characterized in that, The control module includes: A relay, the relay includes a contact switch, and the contact switch closes or opens in response to the switch state signal; Among them, when all the switch state signals indicate that all the switch modules are closed, the contact switch closes; when one of the switch state signals indicates that the corresponding switch module is open, the contact switch opens after a preset delay. Among them, the higher the strict level of the open switch module, the shorter the preset delay.

4. The detection circuit according to claim 1, wherein Each of the detection modules includes: A first detection unit, the first detection unit is electrically connected to the plurality of switch modules of different types, and outputs a first switch state signal; A second detection unit, the second detection unit is electrically connected to the plurality of switch modules of different types, and outputs a second switch state signal. The first detection unit and the second detection unit of the same detection module are electrically connected to the same switch module; Among them, 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 includes: The first relay, wherein a first contact switch is included in the first relay, and the first contact switch closes or opens in response to the first switch state signal; The second relay, wherein a second contact switch is included in the second relay, and the second contact switch closes or opens in response to the second switch state signal; Wherein, when the first switch state signal indicates that all the switch modules are closed, the first contact switch closes, and when the second switch state signal indicates that all the switch modules are closed, the second contact switch closes.

6. The detection circuit according to claim 5, wherein The first contact switch and the second contact switch are connected in series.

7. The detection circuit according to claim 1 or 6, characterized in that, The control module further includes: A control unit, which detects the elevator position, door opening / closing state or destination floor of the elevator and generates an elevator state signal; A third relay, wherein a third contact switch is included in the third relay, and the third contact switch closes or opens in response to the elevator state signal.

8. The detection circuit according to claim 7, wherein The third relay includes: A fourth relay, wherein a fourth contact switch is included in the fourth relay, and the fourth contact switch closes or opens in response to the elevator state signal; A fifth relay, wherein a fifth contact switch is included in the fifth relay, and the fifth contact switch closes or opens in response to the elevator state signal; The fourth contact switch and the fifth contact switch are connected in series.

9. The detection circuit according to claim 1, wherein The control module is electrically connected to the nearest detection module.

10. An elevator, characterized in that, Including the detection circuit according to any one of claims 1 to 9 above.

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