A novel elevator door system protection device and elevator door system
By changing the status characteristics of the signal, the problem of increasing wiring costs of traditional elevator door system protection devices is solved, and multiple signal analysis and fault judgments are realized for single signal transmission, reducing wiring costs.
Patent Information
- Application Number
- CN202420518868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-18
AI Technical Summary
Under the requirements of the new standard, traditional elevator door system protection devices need to add a signal output to achieve fault judgment, resulting in the need to reserve two I/O interfaces, which increases the wiring cost.
By changing the status characteristics of the signal (pulse period or duty cycle) of the signal, the signal type is distinguished, so that only a single signal transmission is required between the elevator door system protection device and the elevator door system can be used for signal analysis and fault judgment.
The wiring between the elevator door system protection device and the elevator door system is reduced, the acquisition point of the elevator door system for input signals is reduced, and the wiring cost is reduced.
Smart Images
Figure CN222699767U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator safety protection, and in particular to a novel elevator door system protection device and an elevator door system. Background Art
[0002] With the development of the elevator industry and the introduction of new standards, the problem of elevator door systems has attracted increasing attention. The new standard mentions the detection range requirements of the door system protection device, and more importantly, adds fault judgment to the door system. Because if the door system protection device fails, when the passenger enters the elevator, it cannot sense the reverse door opening, and the elevator door system will close the door and there will be a risk of people being pinched.
[0003] At present, traditional door system protection devices usually output a high and low level signal to the elevator door system to determine whether there is an object blocking the monitoring area. After the new standard is introduced, the traditional door system protection device needs to add an additional signal output during fault self-detection to collect fault signals for the elevator door system. Therefore, the elevator door system needs to reserve two I / O interfaces to connect with the door system protection device to realize the judgment of obstruction signals and fault signals, which increases the wiring cost. Utility Model Content
[0004] The purpose of the utility model is to provide a novel elevator door system protection device and an elevator door system, which can parse and process a variety of signals to distinguish the signal types by changing the state characteristics of the signal (pulse period or its duty cycle), so that only a single-channel signal transmission is required between the elevator door system protection device and the elevator door system to parse and distinguish normal signals, obstruction signals and fault signals to determine the specific state of the detection sensor, thereby reducing the wiring between the two and the elevator door system's collection of input signals.
[0005] To achieve the above object, according to the first aspect of the utility model, a novel elevator door system protection device is provided, comprising:
[0006] Detection sensor;
[0007] A signal acquisition unit, connected to the detection sensor, and used to acquire multiple signals from the detection sensor;
[0008] A signal analysis unit, whose input end is connected to the signal acquisition unit and whose output end is provided with a single signal output interface, is used to analyze and process multiple signals by changing the state characteristics of the signals to distinguish the signal types and output a single signal through the signal output interface.
[0009] Optionally, the signal analysis unit analyzes and distinguishes normal signals, obstruction signals and fault signals by changing a pulse period of the signal.
[0010] Optionally, the signal analysis unit analyzes and distinguishes normal signals, obstruction signals and fault signals by changing the pulse period duty cycle of the signal.
[0011] Optionally, the novel elevator door system protection device further includes:
[0012] An alarm module is integrated in the elevator door system protection device and is used to give an alarm when the detection sensor fails.
[0013] According to a second aspect of the utility model, there is provided an elevator door system, comprising:
[0014] The door controller has a single signal input interface at its input end. The door controller and the elevator door system protection device perform single-channel signal transmission via a single signal line to reduce wiring and save input signal collection points of the elevator door system.
[0015] The beneficial effect of the utility model is that by changing the state characteristics of the signal (pulse period or its duty cycle), multiple signals are analyzed and processed to distinguish the signal types, so that only a single signal transmission is required between the elevator door system protection device and the elevator door system to analyze and distinguish normal signals, obstruction signals and fault signals to determine the specific state of the detection sensor, thereby reducing the wiring between the two and the elevator door system's collection of input signals.
[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of signal transmission between an elevator door system protection device and an elevator door system in the prior art;
[0018] Figure 2 A schematic diagram of signal transmission between an elevator door system protection device and an elevator door system according to an embodiment of the utility model;
[0019] Figure 3 A schematic diagram of a pulse period of a signal changed by an elevator door system protection device according to an embodiment of the utility model;
[0020] Figure 4 A schematic diagram of a pulse cycle duty cycle of a signal of an elevator door system protection device according to another embodiment of the utility model;
[0021] In the figure: 1. Elevator door system protection device; 11. Detection sensor; 12. Signal acquisition unit; 13. Signal analysis unit; 2. Elevator door system; 21. Door controller. DETAILED DESCRIPTION
[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0025] See also Figure 1 , the traditional elevator door system protection device uses a single high and low level signal to determine whether there is an object blocking the monitoring area (that is, this signal output can only determine whether there are two states of whether there is an object blocking the monitoring area of the door system protection device). In order to realize the analysis and judgment of multiple signals (such as adding device failure status), it is necessary to set a corresponding number of signal outputs. At the same time, the elevator door system also needs to reserve a corresponding number of I / O interfaces to realize multi-channel connection with the elevator door system protection device and correspondingly transmit multiple signals independently, thereby realizing the judgment of multiple signals, so that the elevator door system can perform corresponding actions according to the judged signals. However, such a setting will increase the signal input points and wiring costs of the elevator door system.
[0026] Therefore, see Figure 2 A novel elevator door system protection device 1 shown in a preferred embodiment of the present application includes a detection sensor 11, a signal acquisition unit 12 and a signal analysis unit 13. The signal acquisition unit 12 is connected to the detection sensor 11 and is used to collect multiple signals from the detection sensor 11. The input end of the signal analysis unit 13 is connected to the signal acquisition unit 12, and a single signal output interface is provided at its output end. The signal analysis unit 13 is used to analyze and process multiple signals by changing the state characteristics of the signals to distinguish the signal types and output a single signal through the signal output interface. An elevator door system 2 shown in a preferred embodiment of the present application includes a door controller 21, and a single signal input interface is provided at its input end. The door controller 21 and the elevator door system protection device 1 perform single-channel signal transmission through a single signal line to reduce wiring and save input signal collection points of the elevator door system 2.
[0027] According to the scheme of the embodiment of the utility model, by changing the state characteristics of the signal, multiple signals are analyzed and processed to distinguish the signal types, so that only a single-channel signal transmission is required between the elevator door system protection device 1 and the elevator door system 2 to analyze and distinguish the normal signal, the blocking signal and the fault signal to determine the specific state of the detection sensor 11 (that is, by changing the state characteristics of the signal according to the signal type, multiple signals can be distinguished from each other even through a single-channel signal transmission), thereby reducing the wiring between the elevator door system protection device 1 and the elevator door system 2 and the collection of input signals by the elevator door system 2.
[0028] The following is a detailed description with specific embodiments:
[0029] In one embodiment, the signal analysis unit 13 analyzes and distinguishes normal signals, shielding signals and fault signals by changing the pulse period of the signal. Figure 3 For example, in a normal state, when no one enters the elevator (i.e., the detection sensor 11 is not blocked), the pulse period of the signal can be set to 40ms; when someone enters the elevator (i.e., the detection sensor 11 is blocked), the pulse period of the signal can be set to 80ms; when the detection sensor 11 fails, the pulse period of the signal can be set to 120ms. The specific pulse period values of the signal under different states are not limited here.
[0030] In another embodiment, the signal analysis unit 13 analyzes and distinguishes normal signals, shielding signals and fault signals by changing the pulse cycle duty cycle of the signal. Figure 4For example, under normal conditions, if a pulse period of the signal output by the detection sensor 11 is 40ms and no one enters the elevator (i.e., the detection sensor 11 is not blocked), the signal can be set to a high level for 30ms and a low level for 10ms within a pulse period; when someone enters the elevator (i.e., the detection sensor 11 is blocked), the signal can be set to a low level for 10ms and a high level for 30ms within a pulse period; when the detection sensor 11 fails, the duty cycle of the signal in each pulse period can be changed again, or the signal can be directly output as a completely high level or a completely low level within a pulse period. The specific pulse period duty cycle values of the signal under different states are not limited here.
[0031] Specifically, in this embodiment, the detection sensor 11 is a grating. When the grating fails, it will continue to give a door opening signal, and the elevator door system 2 can preset a time to decide whether to perform the door closing action with 4J kinetic energy according to the new elevator standard. Furthermore, the grating failure types include cable disconnection or disconnection, infrared tube and other device failures, component cold soldering and PCB disconnection.
[0032] With the analysis of the signal by the elevator door system protection device 1, the elevator door system 2 can realize the determination output of the single-channel multi-state logic according to the corresponding analysis scheme, thereby executing the corresponding action. At the same time, since the elevator door system protection device 1 can determine different states by itself, an alarm module (such as a responsive buzzer and voice module) can also be added to the elevator door system protection device 1 to provide an alarm reminder when the elevator door system protection device 1 is in a fault state.
[0033] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A new type of elevator door system protection device, characterized in that: include: Detection sensor; A signal collection unit, connected to the detection sensor, for collecting a variety of signals; A signal analysis unit, whose input end is connected to the signal acquisition unit and whose output end is provided with a single signal output interface, is used to analyze and process multiple signals by changing the state characteristics of the signals to distinguish the signal types and output a single signal through the signal output interface.
2. The novel elevator door system protection device according to claim 1 is characterized in that: The signal analysis unit analyzes and distinguishes normal signals, shielding signals and fault signals by changing the pulse period of the signal.
3. The novel elevator door system protection device according to claim 1 is characterized in that: The signal analysis unit analyzes and distinguishes normal signals, shielding signals and fault signals by changing the pulse cycle duty cycle of the signal.
4. The novel elevator door system protection device according to claim 1 is characterized in that: Also includes: An alarm module is integrated in the elevator door system protection device and is used to give an alarm when the detection sensor fails.
5. An elevator door system, characterized in that: include: A door controller having a single signal input interface at its input end, wherein single-channel signal transmission is performed between the door controller and the elevator door system protection device according to any one of claims 1 to 4 through a single signal line to reduce wiring and save input signal collection points of the elevator door system.