Household elevator monitoring device

Abstract

The utility model provides a household elevator monitoring device. The household elevator monitoring device comprises an elevator car outdoor monitoring assembly and an elevator car indoor monitoring assembly. The elevator car outdoor monitoring assembly comprises an ESP32-WROOM server, a first camera, a first liquid crystal module, a first sound module and an entrance door emergency door opening action module. The ESP32-WROOM server is connected with a first camera, a first liquid crystal module, a first sound module and an entrance door emergency door opening action module; the entrance door emergency door opening action module is connected with an entrance door electronic door lock; the elevator car indoor monitoring assembly comprises an ESP32-WROOM client side, a second camera, a second liquid crystal module, a second sound module and an elevator car door switch. And the ESP32-WROOM client is connected with the second camera, the second liquid crystal module, the second sound module and the car door switch. By means of the technical scheme, the technical effect that people trapped in the home elevator can be rescued in time is achieved.

Description

Technical Field

[0001] This utility model relates to the field of home elevator rescue technology, and in particular to a home elevator monitoring device. Background Technology

[0002] Home elevators are installed in private residences and are for the exclusive use of family members. They are installed within the building and serve as a means for the single family to access their home. Classified as household appliances, they are inaccessible to the general public or other residents. When a home elevator malfunctions and traps someone inside, the trapped person may panic and become fearful because the entrance door is locked and rescuers cannot enter in time. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a home elevator monitoring device, so as to enable people trapped in home elevators to receive timely rescue.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a home elevator monitoring device, comprising an outdoor monitoring component and an indoor monitoring component; the outdoor monitoring component includes an ESP32-WROOM server, a first camera, a first LCD module, a first sound module, and an emergency door opening action module; the ESP32-WROOM server is connected to the first camera, the first LCD module, the first sound module, and the emergency door opening action module; the emergency door opening action module is connected to the electronic door lock; the indoor monitoring component includes an ESP32-WROOM client, a second camera, a second LCD module, a second sound module, and a car door switch; the ESP32-WROOM client is connected to the second camera, the second LCD module, the second sound module, and the car door switch.

[0005] In a preferred embodiment, both the ESP32-WROOM server and the ESP32-WROOM client use an ESP-WROOM-32 module; the ESP-WROOM-32 module is equipped with a WiFi-BT-BLE MCU, and the ESP32-WROOM server and the ESP32-WROOM client communicate with each other through the WiFi-BT-BLE MCU.

[0006] In a preferred embodiment, both the first camera and the second camera use the OV5640 camera sensor.

[0007] In a preferred embodiment, both the first liquid crystal module and the second liquid crystal module use a 2.4-inch LCD screen, and the ST7789 chip is used as the driving chip for the LCD screen.

[0008] In a preferred embodiment, both the first and second audio modules are network voice intercom modules; the network voice intercom module includes a single independent button module, an INMP441 omnidirectional microphone module, a MAX98357 audio amplifier, and a small speaker.

[0009] In a preferred embodiment, the 1-bit independent button module is a digital level, with a high level when pressed and a low level when released.

[0010] In a preferred embodiment, the emergency door opening action module includes a relay module, the relay contacts of which control the electromagnetic coil of the electronic door lock.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention is applicable to a wireless control device for indoor and outdoor monitoring and remote door opening of home elevators. Specifically, it relates to a novel device that does not require connection to a home wireless router, but communicates point-to-point via a wireless WIFI device. It can monitor the situation inside and outside the home elevator, and when a person is trapped in the elevator, the trapped person can open the outdoor door in time through the home elevator monitoring device to allow rescuers to enter the house for rescue. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a home elevator monitoring device according to a preferred embodiment of the present invention;

[0013] Figure 2 This is a pin layout diagram of the ESP-WROOM-32 module according to a preferred embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the OV5620 camera module assembly according to a preferred embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the OV5640 CMA interface of a preferred embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of the interface of a 2.4-inch LCD screen according to a preferred embodiment of the present invention.

[0017] Figure 6 This is a schematic diagram of the button module according to a preferred embodiment of the present invention;

[0018] Figure 7 This is a schematic diagram of an omnidirectional microphone module according to a preferred embodiment of the present invention;

[0019] Figure 8 This is a schematic diagram of the MAX98357 audio amplifier module according to a preferred embodiment of the present invention;

[0020] Figure 9 This is a circuit diagram of the relay module of a preferred embodiment of the present invention;

[0021] Figure 10 This is a power supply diagram for a preferred embodiment of the present invention;

[0022] Figure 11 This is a schematic diagram of an outdoor monitoring device box according to a preferred embodiment of the present invention;

[0023] Figure 12 A schematic diagram of the monitoring device installed on the car control panel according to a preferred embodiment of this utility model; Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] A home elevator monitoring device, reference Figure 1-12 The system includes an outdoor monitoring component for the car and an indoor monitoring component for the car. The outdoor monitoring component includes an ESP32-WROOM server, a first camera, a first LCD module, a first audio module, and an emergency door opening action module for the entrance door. The ESP32-WROOM server is connected to the first camera, the first LCD module, the first audio module, and the emergency door opening action module for the entrance door. The emergency door opening action module for the entrance door is connected to the electronic door lock for the entrance door. The indoor monitoring component includes an ESP32-WROOM client, a second camera, a second LCD module, a second audio module, and a car door switch. The ESP32-WROOM client is connected to the second camera, the second LCD module, the second audio module, and the car door switch.

[0028] Both the ESP32-WROOM server and the ESP32-WROOM client use the ESP-WROOM-32 module; the ESP-WROOM-32 module is equipped with a WiFi-BT-BLE MCU, and the ESP32-WROOM server and the ESP32-WROOM client communicate with each other through the WiFi-BT-BLE MCU.

[0029] Both the first and second cameras use the OV5640 camera sensor.

[0030] Both the first and second LCD modules use 2.4-inch LCD screens and employ the ST7789 chip as the driver chip for the LCD screens.

[0031] Both the first and second audio modules are network voice intercom modules; the network voice intercom module includes a 1-key independent button module, an INMP441 omnidirectional microphone module, a MAX98357 audio amplifier, and a small speaker.

[0032] The single independent button module operates at a digital level; pressing it results in a high level, and releasing it results in a low level.

[0033] The emergency door opening module includes a relay module, whose relay contacts control the electromagnetic coil of the electronic door lock.

[0034] This patented monitoring and control device uses one ESP32 module group as a server and another ESP32 module group as a client. The ESP32 server creates its own wireless network (ESP32 soft access point), which other Wi-Fi devices can connect to. The ESP32 client is configured as a station. It can connect to the ESP32 server's wireless network. The client can send requests to the server to request data or other information. It only needs to use the server's IP address to send requests along a specific path. The server listens for incoming requests and sends appropriate responses. The client receives the data and displays it on an LCD screen.

[0035] This direct point-to-point communication mode, operating under independent server and client conditions, overcomes the shortcomings of most current wireless monitoring systems that rely on connecting to a home wireless router and broadband access, resulting in poor signal strength. The advantages of this B / C direct communication method include: no broadband access required, no wireless router needed, strong anti-interference capabilities, no latency, fast response speed, and efficient and reliable data transmission.

[0036] 1. Technical parameters and functions of each component of the monitoring and control device

[0037] (1) ESP32-WROOM-32 module

[0038] The ESP-WROOM-32 is a powerful and versatile MCU module with WiFi-BT-BLE integration, suitable for low-power sensor networks and demanding tasks. At its core is the ESP32-WROOM-32 chip, which is scalable and adaptive. The ESP32 integrates a rich set of peripherals, including a capacitive touch sensor, Hall effect sensor, low-noise sensor amplifier, SD card interface, Ethernet interface, high-speed SDIO / SPI, UART, I2S, and I2C. 2 C, etc.

[0039] The ESP-WROOM-32 also integrates traditional Bluetooth, Bluetooth Low Energy, and Wi-Fi, supporting a very wide range of communication connections. After being amplified, the output power can reach 22dBm, enabling maximum wireless transmission range and network connectivity. Table 1: ESP-WROOM-32 Chip Functions:

[0040]

[0041]

[0042] Table 2 ESP-WROOM-32 Module Pin Definitions:

[0043]

[0044]

[0045] (2) OV5640 camera module group

[0046] The ATK-MC5640 module is a high-performance 5MP high-definition camera module. This module uses the OV5640 chip.

[0047] At its core is the camera sensor, the OV5640, a 1 / 4-inch CMOS QSXGA (2592*1944) image sensor. The ATK-MC5640 module also integrates an active crystal oscillator and an LDO chip, along with autofocus (AF) and two 1W high-brightness LED flashes, offering excellent value for money.

[0048] The OV5640 module connects to external circuits via a 2*9 pin header. Detailed descriptions of each pin are shown in Table 3 below:

[0049] Table 3:

[0050] pin Function 3.3V 3.3V power input GND power ground SCL SCCB communication clock signal SDA SCCB communication data signals VSYNC Frame synchronization signal output HREF Horizontal synchronization signal output RST Reset signal (active low) D0-D7 8-bit data output PCLK Pixel clock output PWDN Power-down enable signal (active high) FLASH External control flash signal (active high)

[0051] (3) 2.4-inch LCD module

[0052] The display module uses a 2.4-inch LCD screen with a resolution of 320*240 pixels and supports 16-bit true color display. The module uses ST7789 as the LCD driver chip, which has built-in RAM and does not require an external driver or memory. The external ESP32 master control chip can drive the module using only the SPI interface.

[0053] The 2.4-inch display module is connected to the external circuit via a 2*4 header (2.54mm pitch). A detailed description of each pin is shown in Table 4 below:

[0054] Table 4:

[0055] Serial Number name illustrate 1 VCC3.3 3.3V power supply 2 LCD_CS SPI communication chip select signal (active low) 3 LCD_SDA SPI communication MOSI signal lines 4 LCD_RST Hardware reset pin (active low) 5 SLCD_WR Write command / data signal lines (low level: write command; high level: write data) 6 SLCD_SCK SPI communication SCK signal line 7 LCD_PWR LCD backlight control pins (low level: off; high level: on) 8 GND power ground

[0056] 2.4-inch LCD screen module pin definitions

[0057] (4) Network voice intercom module

[0058] The network voice intercom module consists of a single independent button module, an INMP441 omnidirectional microphone module, a MAX98357 audio amplifier, and a φ20mm speaker.

[0059] 1) One independent button module / elevator car panel button)

[0060] The module measures 15.09*21.12mm. The button output is a digital level; pressing the button results in a high level, and releasing it results in a low level.

[0061] The interface is 3-pin. These buttons are installed on the outdoor monitor panel and the elevator car control panel, respectively.

[0062] 2) INMP441 Omnidirectional Microphone Module

[0063] Product Features: High-precision 24-bit digital I / O 2 It features a Type-C interface, a high signal-to-noise ratio of 61dBA, high sensitivity of -26dBFS, a stable frequency response from 60Hz to 15KHz, and low current consumption of 1.4mA.

[0064] Interface definition:

[0065] ①SCK:I 2 S-interface serial data clock

[0066] ②WS:I 2 S-interface serial data word selection

[0067] ③L / R: Left / Row channel selection. When set to low level, the microphone is in I... 2When the left channel output of C-frame is set to low, the microphone outputs on the right channel.

[0068] ④SD:I 2 S-interface serial data output

[0069] ⑤VCC: Input power supply, 1.8V to 3.3V

[0070] ⑥GND: Power ground

[0071] 3) MAX98357 audio amplifier

[0072] MAX98357 I 2 The S amplifier module is developed using the MAX98357 chip. 2 S-digital Class D power amplifier module. Compatible with ESP32 with I... 2 This module, combined with an S-interface main control chip, can be widely used in IoT nodes, audio players, and other projects. It supports 3.3V to 5V power supply. With 5V power and a 4Ω speaker, it delivers over 2.5W of output power. Furthermore, multiple modes can be set by modifying the SD port resistor: amplifier off, left channel output, right channel output, and mixed channel output. The default setting is mixed channel, and the SD interface is exposed, allowing for function switching by connecting different external resistors. This module is compact, features a stamp hole design, and can be directly plugged in or mounted on the project PCB. The output supports both PH2.0 speaker interface and stamp hole connection methods, offering flexibility and convenience.

[0073] Product Features:

[0074] ①MAX98357 I2S digital Class D amplifier, power > 2.5W

[0075] ② Wide voltage supply from 3.3V to 5V

[0076] ② Audio channels can be switched

[0077] ③ The gain is adjustable

[0078] ④ Stamp hole design allows for both patch and direct insertion installation.

[0079] Interface characteristics:

[0080] ①BCLK: Bit clock input

[0081] ②DIN: Digital Input Signal

[0082] ③GAIN: Gain and Channel Selection

[0083] ④SD: Power off and channel selection

[0084] ⑤GND: Power ground

[0085] ⑥VCC: Positive power supply, DC 2.5V~5.5V 4) Small speaker

[0086] The audio output uses a φ20mm speaker with a thickness of 5.2mm.

[0087] (5) Relay control module

[0088] The relay module is mainly used for remote unlocking of outdoor door electronic locks. The relay contacts on the module control the electromagnetic coil of the door lock.

[0089] Module parameters:

[0090] 1) Dimensions: 50.5 (L) x 38.5 (W) x 18.5 (H)

[0091] 2) The board has 4 fixing screw holes around its perimeter, with a hole diameter of 3mm, for easy installation and fixing.

[0092] 3) Use 5V power supply voltage, load: 250V 10A AC or 30V 10A DC.

[0093] 4) Trigger level 3V-5V, trigger current 5mA.

[0094] 5) Fully compatible with 3.3V and 5V TTL control signals

[0095] 6) The relay has a pair of normally open and normally closed contacts.

[0096] (6) Power supply module

[0097] The device is powered by two sets of power supplies, namely DC5V and DC3.3V.

[0098] Electrical parameters:

[0099] 1) Input voltage: DC24V

[0100] 2) Output voltage: DC5V / DC3.3V

[0101] 3) Module size: 48*48mm

[0102] 4) Output current: DC5V 3A(max), DC 3.3V 1A(max)

[0103] Home elevators are installed in private residences and are for the exclusive use of family members. They are installed within the building and serve as a means for the single family to access their home. Classified as household appliances, they are inaccessible to the general public or other residents. When a home elevator malfunctions and traps someone inside, the locked door prevents rescuers from quickly entering, causing panic and fear. This control device addresses this issue. When someone is trapped in a home elevator, they can call for help. Upon arrival at the door, the trapped person can use the LCD screen inside the elevator car to communicate remotely with the rescuers outside. They can also remotely open the door using the emergency door opening button on the control panel inside the elevator car, allowing rescuers to enter and carry out the rescue.

Claims

1. A home elevator monitoring device characterized by comprising: The application relates to a monitoring assembly for a lift car, which comprises an outer lift car monitoring assembly and an inner lift car monitoring assembly; the outer lift car monitoring assembly comprises an ESP32-WROOM server, a first camera, a first liquid crystal module, a first sound module and an emergency opening action module of a household door; the ESP32-WROOM server is connected with the first camera, the first liquid crystal module, the first sound module and the emergency opening action module of the household door; the emergency opening action module of the household door is connected with an electronic door lock of the household door; the inner lift car monitoring assembly comprises an ESP32-WROOM client, a second camera, a second liquid crystal module, a second sound module and a lift door switch; the ESP32-WROOM client is connected with the second camera, the second liquid crystal module, the second sound module and the lift door switch.

2. A home elevator monitoring device according to claim 1, characterized in that The ESP32-WROOM server and the ESP32-WROOM client both adopt ESP-WROOM-32 modules; the ESP-WROOM-32 modules are provided with WiFi-BT-BLE MCUs, and the ESP32-WROOM server and the ESP32-WROOM client are connected through the WiFi-BT-BLE MCUs.

3. A home elevator monitoring device according to claim 1, characterized in that, The first camera and the second camera both adopt OV5640 camera sensors.

4. The home elevator monitoring device of claim 1, wherein, The first liquid crystal module and the second liquid crystal module both adopt 2.4LCD liquid crystal screens, and ST7789 chips are used as driving chips of the LCD liquid crystal screens.

5. The home elevator monitoring device of claim 1, wherein, The first sound module and the second sound module both are network voice intercom modules; the network voice intercom module comprises a 1-bit independent button module, an INMP441 omnidirectional microphone module, a MAX98357 audio amplifier and a small loudspeaker.

6. A home elevator monitoring device according to claim 5, characterized in that The 1-bit independent button module is a digital level, and the high level is pressed and the low level is released.

7. A home elevator monitoring device according to claim 1, characterized in that, The emergency opening action module of the household door comprises a relay module, and a relay contact of the relay module controls an electromagnetic coil of the electronic door lock of the household door.

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