Emergency voice pacifying circuit for power failure of elevator car
By designing an emergency voice comfort circuit for power outage in elevator car, the delay relay and rectifier diode can still perform voice comfort after the external AC power is disconnected, which solves the problem that existing elevator products cannot be voice comforted after power outage, and improves passengers' A sense of security and maintenance efficiency.
Patent Information
- Application Number
- CN202421209504.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Existing elevator products cannot be voiced after power outage, which makes passengers prone to anxiety in the event of failure and makes it difficult for maintenance personnel to quickly locate the fault.
Design an emergency voice comfort circuit for power outage in elevator car. By controlling the switching of power supply and backup power, and using delay relays and rectifier diodes, we ensure that voice comfort can still be performed after the external AC power is disconnected.
It can still be voice-soothed after the external AC power is disconnected, reducing passenger anxiety and inspection time for maintenance personnel, and improving the safety and user experience of the elevator.
Smart Images
Figure CN222454184U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of elevator control, and in particular relates to an emergency voice soothing circuit for a power outage in an elevator car. Background Art
[0002] The new elevator standard requires that the elevator cabin has a voice soothing function when there is a fault or power outage, so that passengers do not have a lot of psychological pressure and reduce the loss of faults. When encountering an elevator fault, if there is no soothing voice broadcast, the passengers in the elevator are easily at a loss because they do not know what to do when facing the elevator fault, and they may even become irritable, which is not conducive to the safety of passengers. At the same time, the staff who inspect the elevator need to spend a long time to find out what kind of fault the elevator has because there is no soothing voice broadcast.
[0003] However, existing elevator products on the market do not have the power outage voice soothing function after a power outage. When the external power is cut off, the elevator system itself has also been powered off, and normal voice soothing cannot be performed. Utility Model Content
[0004] In order to make up for the deficiencies of the prior art, the utility model aims to provide an elevator car power outage emergency voice soothing circuit, which can disconnect the control circuit of the backup power supply by switching the control power supply and the backup power supply, and can also provide voice soothing after the external AC power supply is disconnected. To achieve this purpose, the specific technical solution of this application is as follows:
[0005] The elevator car power outage emergency voice soothing circuit comprises a controller, a control power supply and a backup power supply. The controller controls the playing of the elevator voice soothing, and its power supply input side is connected to the 220V AC power, and its output side is connected to the backup power supply and the control power supply through the relay K1; the two ends of the coil of the relay K1 are respectively connected to the output side of the controller and the control power supply, the backup power supply is connected to the normally open contact of the relay K1 after being connected in series with the diode D1, and the control power supply is connected to the normally closed contact of the relay K1.
[0006] Furthermore, the backup power supply is a 12V DC power supply, and the control power supply outputs a 24V DC voltage; the DC12V interface end of the backup power supply is connected in series with a diode D1 and then connected to the normally open contact of the relay K1, the 0V interface end of the backup power supply is connected to the 0V interface end of the control power supply, and the DC24V interface end of the control power supply is connected to the normally closed contact of the relay K1.
[0007] Furthermore, the relay K1 is a time-delay relay.
[0008] Furthermore, the diode D1 is a rectifier diode.
[0009] Compared with the prior art, the utility model has the following advantages: the circuit structure of the present application is simple, and the switching of the control power supply and the backup power supply is achieved by arranging a delay relay and a rectifier diode between the control power supply, the backup power supply and the controller, and voice soothing playback can be performed after the external AC power supply is disconnected. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a circuit diagram of the utility model.
[0011] In the figure: 1-controller, 2-control power supply, 3-backup power supply. DETAILED DESCRIPTION
[0012] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.
[0013] like Figure 1 As shown, an elevator car power outage emergency voice soothing circuit includes a controller 1, a control power supply 2 and a backup power supply 3. The controller 1 controls the playing of the elevator voice soothing, and its power supply input side is connected to the 220V AC power, and its output side is connected to the backup power supply 3 and the control power supply 2 through the relay K1; the two ends of the coil of the relay K1 are respectively connected to the output side of the controller 1 and the control power supply 2, the backup power supply 3 is connected to the normally open contact of the relay K1 after being connected in series with a diode D1, and the control power supply 2 is connected to the normally closed contact of the relay K1.
[0014] Among them, the backup power supply 3 is a 12V DC power supply, and the control power supply 2 outputs a 24V DC voltage, that is, a transformer is set inside the control power supply to convert 220V AC power into 24V DC power output. Relay K1 is a time delay relay; diode D1 is a rectifier diode, and the preferred model is IN4007. The DC12V interface end of the backup power supply 3 is connected in series with the diode D1 and then connected to the normally open contact of the relay K1, the 0V interface end of the backup power supply 3 is connected to the 0V interface end of the control power supply 2; the DC24V interface end of the control power supply 2 is connected to the normally closed contact of the relay K1.
[0015] It can be understood that when the power input side of the controller 1 detects that the control power supply 2 is supplying power, the output port of the controller 1 outputs a low level, the relay K1 is actuated, and the normally open contact connecting the relay K1 and the diode D1 is closed. At this time, due to the action of the diode D1, the 24V voltage output by the control power supply 2 will not damage the 12V voltage of the backup power supply 3. When the external power is cut off, the 24V DC voltage of the control power supply 2 disappears. At the same time, since there is a delay in disconnecting the relay K1, the backup power supply 3 supplies power to the relay K1 coil and the DC24V port of the control power supply 2 through the diode D1 as the power supply of the controller 1.
[0016] The elevator of this application uses a universal elevator emergency five-party call power supply. When there is no DC24V power supply from the control power supply 2, the elevator system can detect the external AC220V and monitor the power failure; when the external power is off and the DC24V of the control power supply 2 is disconnected, the backup power supply 3 can directly supply power to the controller 1 and the elevator system through this circuit. In the backup power mode, after playing the voice soothing, the controller 1 disconnects the power supply of the backup power mode through its output side outputting a high level, and the backup power stops supplying power to the elevator system.
[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An elevator car power outage emergency voice soothing circuit, characterized in that: The invention comprises a controller (1), a control power supply (2) and a backup power supply (3). The controller (1) controls the playing of elevator voice soothing, and its power supply input side is connected to 220V AC power, and its output side is connected to the backup power supply (3) and the control power supply (2) through a relay K1; two ends of the coil of the relay K1 are respectively connected to the output side of the controller (1) and the control power supply (2); the backup power supply (3) is connected to the normally open contact of the relay K1 after being connected in series with a diode D1, and the control power supply (2) is connected to the normally closed contact of the relay K1.
2. The elevator car power outage emergency voice soothing circuit according to claim 1 is characterized in that: The backup power supply (3) is a 12V DC power supply, and the control power supply (2) outputs a 24V DC voltage; the DC12V interface end of the backup power supply (3) is connected in series with a diode D1 and then connected to the normally open contact of the relay K1, the 0V interface end of the backup power supply (3) is connected to the 0V interface end of the control power supply (2), and the DC24V interface end of the control power supply (2) is connected to the normally closed contact of the relay K1.
3. The elevator car power outage emergency voice soothing circuit according to claim 1 is characterized in that: The relay K1 is a time delay relay.
4. The elevator car power outage emergency voice soothing circuit according to claim 1 is characterized in that: The diode D1 is a rectifier diode.