CN218841388U

CN218841388U - Elevator button signal acquisition circuit

Info

Publication number: CN218841388U
Application number: CN202223223601.8U
Authority: CN
Inventors: 刘雄波; 汤松柏
Original assignee: Guangzhou Lubangtong IoT Co Ltd
Current assignee: Guangzhou Lubangtong IoT Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-04-11
Anticipated expiration: 2032-12-01

Abstract

The utility model provides an elevator key signal acquisition circuit, including the elevator button circuit that the elevator is current to be used for the pilot lamp control, the button that elevator button circuit is provided with the elevator control panel, is connected with the elevator control panel and the key pilot lamp and the first resistance of being connected with the elevator control panel after establishing ties, elevator button circuit is through being used for pressing the button signal acquisition circuit that the signal gathered and the controller signal connection who handles the collection signal nature, signal acquisition circuit is provided with isolating device, the isolating device input is parallelly connected with the series circuit both ends of button pilot lamp and first resistance, the one end and the controller of isolating device output are connected and the other end is connected with the ground wire, isolating device is connected through pull-up resistance and control power supply with the controller. Through the utility model discloses can effectively reduce the cost, not influence the stability of elevator work.

Description

Elevator button signal acquisition circuit

Technical Field

The utility model belongs to the elevator field especially relates to an elevator key signal acquisition circuit.

Background

The elevator key is widely applied to traditional elevator equipment and is a standard matching function of an elevator. The elevator is used as a special industry because the safety of the elevator is concerned with life. If need gather elevator service information, can not change its original design promptly, guarantee again even if collection circuit work is abnormal, can not influence elevator normal operating yet. At present, due to the popularization of the internet of things, a site elevator needs to be recorded on a certain floor, the daily use times of the certain floor and the like, most of key detection circuits on the market at present are complex in design and high in cost, and the elevator market with millions of stocks at home and abroad cannot be popularized and applied on a large scale. Therefore, an elevator key signal acquisition circuit is needed to meet the use requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an elevator key signal acquisition circuit can effectively reduce the cost, does not influence the stability of elevator work.

For realizing this purpose, an elevator key signal acquisition circuit is provided, including the elevator key circuit that the elevator is present to be used for the pilot lamp control, elevator key circuit is provided with elevator control panel, the button be connected with the elevator control panel and the key pilot lamp and the first resistance of being connected with the elevator control panel after establishing ties, elevator key circuit through be used for pressing the button signal to carry out the signal acquisition circuit of gathering with carry out the controller signal connection of handling to gathering signal nature, signal acquisition circuit is provided with isolating device, the isolating device input is parallelly connected with the series circuit both ends of key pilot lamp and first resistance, the one end and the controller of isolating device output are connected and the other end is connected with the ground wire, isolating device and controller be connected through pull-up resistance and control power supply.

Preferably, the isolating device is an optocoupler, and the input end of the isolating device is connected in parallel with two ends of a series circuit of the key indicator lamp and the first resistor through a series current-limiting resistor.

Preferably, the resistance value of the current limiting resistor is 2.2K omega.

Preferably, the control power supply is a power supply circuit of the controller, and the control power supply provides a direct current 3.3V voltage.

Preferably, the controller is a single chip microcomputer.

Preferably, the pull-up resistor has a resistance of 10K Ω.

Preferably, the number of the signal acquisition circuits is the same as that of the elevator key circuits correspondingly.

Compared with the prior art, the utility model, its beneficial effect lies in:

the utility model discloses a signal acquisition circuit carries out the button through the power supply condition that detects button pilot lamp through setting up isolating device and pull-up resistance and presses signal acquisition, and stable in structure can effectively reduce the cost, does not influence the stability of elevator work. The utility model discloses well current-limiting resistor's setting can effectively protect isolating device, and control power supply can simplify the circuit for the supply circuit of controller, saves the cost.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1-2, the utility model provides an elevator key signal acquisition circuit, elevator key circuit 100 that is used for the pilot lamp control including the elevator is present, elevator key circuit 100 is provided with elevator control panel P1, key K1 be connected with elevator control panel P1 and the key pilot lamp D7 and the first resistance R1 of being connected with elevator control panel P1 after establishing ties, elevator key circuit 100 is through being used for pressing key K1 to carry out the signal acquisition circuit 200 of gathering and the controller 300 signal connection who carries out the nature processing to gathering the signal, signal acquisition circuit 200 is provided with isolating device U1, isolating device U1 input is parallelly connected with key pilot lamp D7 and first resistance R1's series circuit both ends, the one end and the controller 300 of isolating device U1 output are connected and the other end is connected with the ground wire, isolating device U1 is connected with controller 300 through pull-up resistance R2 and is connected with control power VDD. The number of the signal acquisition circuits 200 is the same as that of the elevator key circuits 100. The number of the elevator key circuits 100 is set according to the number of floors, and the signal acquisition circuits 200 are correspondingly set to have the same number to monitor the keys K1 on each floor.

The isolating device U1 is an optocoupler, and the input end of the isolating device U1 is connected with two ends of a series circuit of the key indicator lamp D7 and the first resistor R1 in parallel through a series current limiting resistor R3. The resistance of the current limiting resistor R3 is 2.2K omega. The pull-up resistor R2 has a resistance of 10K omega. In this embodiment, the power supply for the key indicator D7 from the elevator control board P1 is dc 12V or dc 24V, so that the current limiting resistor R3 can effectively protect the isolation device U1. The isolation device U1 is a universal photoelectric isolation type optocoupler. The key indicator light D7 is set to a red light or a green light.

The control power supply VDD is a power supply circuit of the controller 300, and the control power supply VDD supplies a dc 3.3V voltage. The controller 300 is a single chip microcomputer, and the controller 300 can be provided with a storage element and a display, and can store and display detected data.

In this embodiment, when the key K1 is pressed, the LED-position changes to low level in response to the operation of the key K1 after passing through the elevator control board P1, so that the key indicator D7 is turned on and lighted, which is the same as the effect we see when taking an elevator on a daily basis. Therefore, when the key K1 is pressed down, the key indicator lamp D7 behind the elevator control panel P1 is necessarily conducted, and the condition that the key indicator lamp D7 is not bright after the key K1 is pressed down does not exist; meanwhile, after the key K1 is pressed down, the isolating device U1 and the current-limiting resistor R3 are connected in parallel to an indicator lamp pin of the key indicator lamp D7, and the signal acquisition circuit 200 is triggered to work through the change of the pin. Before the button K1 is pressed, the connection end of the isolating device U1 and the controller 300 is at a high level of 3.3V, and after the button K1 is pressed, it is at a low level of 0V. The time that the key K1 is pressed is consistent with the time collected by the controller 300, so that the time length of the key K1 pressed can be judged; the number of times that the key K1 is pressed can be judged, and the frequency of the use of the key on the corresponding floor on the same day or the same day can be calculated. In this embodiment, all the used devices are passive devices, and even if the electronic device of the signal acquisition circuit 200 is damaged, the normal operation of the elevator key circuit 100 is not affected by the reverse connection of the lines. Through the utility model discloses every way signal acquisition circuit 200 cost is less than 0.5 yuan, can effectively reduce the cost, does not influence the stability of elevator work.

The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein, but is not intended to be foreclosed in other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an elevator button signal acquisition circuit, includes elevator button circuit (100) that the elevator is used for the pilot lamp control now, elevator button circuit (100) are provided with elevator control panel (P1), button (K1) be connected with elevator control panel (P1) and the button pilot lamp (D7) and first resistance (R1) of being connected with elevator control panel (P1) after establishing ties, its characterized in that, elevator button circuit (100) through be used for pressing button (K1) signal acquisition circuit (200) that the signal gathered with carry out the signal to gathering controller (300) signal connection that handles that the signal nature is gathered, signal acquisition circuit (200) are provided with isolating device (U1), isolating device (U1) input and button pilot lamp (D7) and first resistance (R1) both ends of series circuit connect in parallel, the one end of isolating device (U1) output is connected with controller (300) and the other end is connected with ground wire, the connection of isolating device (U1) and controller (300) is connected with pull up resistance (R2) and control power supply (VDD).

2. The elevator key signal acquisition circuit according to claim 1, wherein the isolation device (U1) is an optocoupler, and the input end of the isolation device (U1) is further connected in parallel with two ends of a series circuit of the key indicator lamp (D7) and the first resistor (R1) through a series current limiting resistor (R3).

3. The elevator key signal acquisition circuit according to claim 2, wherein the resistance of the current limiting resistor (R3) is 2.2K Ω.

4. The elevator key signal acquisition circuit according to claim 1, wherein the control power supply (VDD) is a power supply circuit of the controller (300), and the control power supply (VDD) provides a direct current 3.3V voltage.

5. The elevator key signal acquisition circuit according to claim 1 or 4, wherein the controller (300) is a single chip microcomputer.

6. The elevator key signal acquisition circuit according to claim 1, wherein the pull-up resistor (R2) has a resistance of 10K Ω.

7. The elevator key signal acquisition circuit according to claim 1, wherein the number of the signal acquisition circuits (200) is the same as the number of the elevator key circuits (100).