Intelligent mattress air pressure balance control system and intelligent mattress

Abstract

The utility model provides an intelligent mattress air pressure balance control system which comprises an air bag module, an air pressure sensor group, a film pressure sensor group, an air pressure acquisition module, a surface pressure acquisition module, an air path execution module, an electrical main control module and a power supply module, the air pressure sensor group comprises a plurality of air pressure sensors, and the thin film pressure sensor group comprises a plurality of thin film pressure sensors which are uniformly distributed on the surface of the air bag module; and the electrical main control module is electrically connected with the gas path execution module and is used for sending a control signal of the gas pump to the gas path execution module. The problems that according to an existing mattress, the pressure conditions of all parts of the human body cannot be accurately judged, an air bag cannot be accurately inflated to reach a proper pressure value, a certain part of the human body cannot be sufficiently supported, and then the sleep comfort degree is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of smart mattresses, in particular to a smart mattress air pressure balancing control system and a smart mattress. Background Art

[0002] Some existing airbag mattresses have internal airbag assemblies. By controlling the air pump and solenoid valve to inflate and deflate the airbags, the internal air pressure is adjusted, thereby varying the height of the airbags and, in turn, the mattress's firmness to achieve balanced pressure distribution across the body. However, when a person lies down, because the pressure on the airbag surface is not equal to the internal pressure, using only the pressure sensor to measure the internal pressure cannot provide big data on a person's pressure distribution and sleep preferences. This inability to accurately determine the pressure level of each part of the body makes it impossible to accurately inflate the airbags to the appropriate pressure, resulting in a lack of adequate support for specific body parts, which in turn affects sleep comfort. Utility Model Content

[0003] The purpose of the present utility model is to provide an intelligent mattress air pressure equalization control system and an intelligent mattress thereof, which are used to solve the problem that current mattresses cannot accurately judge the pressure conditions of various parts of the human body, cannot accurately inflate the airbags to the appropriate pressure value, cannot provide sufficient support to certain parts of the human body, and thus affect sleep comfort.

[0004] The technical solution of the present invention is implemented as follows: a smart mattress air pressure equalization control system, including an airbag module, an air pressure sensor group, a thin film pressure sensor group, an air pressure acquisition module, a surface pressure acquisition module, an air circuit execution module, and an electrical main control module, wherein the airbag module includes a plurality of detachable airbag strips, the air pressure sensor group includes a plurality of air pressure sensors, and the thin film pressure sensor group includes a plurality of thin film pressure sensors uniformly distributed on the surface of the airbag module; each of the airbag modules is connected to the air pressure sensor through an air pipe; the air pressure sensor group is electrically connected to the air pressure acquisition module; the air pressure acquisition module is communicatively connected to the electrical main control module; the electrical main control module is electrically connected to the air circuit execution module for sending an air pump control signal thereto; and also includes a power supply module; the power supply module supplies power to the air pressure acquisition module, the air pressure sensor group, the air circuit execution module, the electrical main control module, the thin film pressure sensor group, and the surface pressure acquisition module.

[0005] As a preferred technical solution, the air circuit execution module includes an air pump and a normally closed solenoid valve, and the airbag module is connected to the air pressure sensor group, the air pump and the normally closed solenoid valve through a three-way connector and an air pipe; the air circuit execution module contains a relay circuit board, which controls the relay pin switch by receiving the control signal sent by the electrical main control module, thereby controlling the inflation of the air pump and the deflation of the airbag module.

[0006] As a preferred technical solution, the air pressure acquisition module is connected to the electrical main control module via an RS485 bus, and is used to send the collected air pressure data to the electrical main control module for subsequent processing.

[0007] As a preferred technical solution, the airbag module is composed of 8 detachable environmentally friendly TPU airbag strips arranged in a longitudinal / transverse / longitudinal and transverse combination. The airbag module composed of 8 airbag strips is connected to the 8 air pressure sensors of the air pressure sensor group through air pipes. The air pressure sensor group is welded on the circuit board and connected to the circuit board of the air pressure acquisition module through a connector for collecting the internal air pressure data of the airbag strips.

[0008] As an optimal technical solution, the air pressure acquisition module includes an STM32 chip, an EEPROM memory chip, a power supply voltage stabilization circuit and a single-chip computer minimum system, which is used to receive the air pressure data transmitted by the air pressure acquisition module, receive the airbag surface pressure data transmitted by the surface pressure acquisition module, and forward the current internal air pressure data and surface pressure data to the host computer; the host computer is connected to the electrical main control module, which is used to receive the air pressure data and airbag surface pressure data uploaded by the electrical main control module, make decisions on the control strategy, set and adjust the airbag target air pressure value and send it to the electrical main control module, thereby controlling the inflation and deflation of the airbag.

[0009] As a preferred technical solution, the air circuit execution module consists of 8 air pumps, 16 three-way connectors, 8 normally closed solenoid valves, 16 relays and corresponding circuit boards. Each air pump is connected to 2 three-way connectors, 1 airbag and 1 air pressure sensor through an air pipe; the 8 normally closed solenoid valves are respectively connected to the relay pins in the air circuit execution module, and the air pumps are respectively connected to the corresponding pins of the remaining 8 relays. The 8 relays form a group, one group controls the deflation of the airbag, and the remaining group is responsible for controlling the inflation of the air pump.

[0010] As a preferred technical solution, the model of the air pressure sensor is TG6P39I, which supports IIC communication protocol. The air pressure acquisition module consists of an STM32F405RGT7 microcontroller, a CH340E chip, an EEPROM chip, a power supply voltage regulator circuit and a microcontroller minimum system.

[0011] As an optimal technical solution, the electrical main control module consists of an STM32F405RGT7 microcontroller, an EEPROM chip, a power supply voltage stabilization system, an RS-485 transceiver system and a microcontroller minimum system. The USRT1-related pins of the electrical main control module are responsible for exchanging data with the event processing and communication system, the UART2-related pins are responsible for communicating with the air pressure acquisition module, the UART3-related pins are responsible for exchanging data with the surface pressure acquisition module, and the GPIO pins are responsible for controlling the air path execution module to perform airbag inflation and deflation operations.

[0012] A smart mattress comprises a mattress body and the above-mentioned smart mattress air pressure equalization control system.

[0013] Compared with the existing technology, this solution has the following beneficial effects: when a human body lies on the airbag cushion, the thin film pressure sensors and air pressure acquisition modules evenly distributed on the surface of the airbag module can quickly and accurately judge the pressure conditions of various parts of the body, and then send control signals of the air pump through the electrical main control module; the air circuit execution module contains a relay circuit board to control the inflation of the air pump and the deflation of the airbag module, so as to better control the inflation and deflation of the airbags in different areas, so that the mattress airbags can provide sufficient support to various parts of the human body, fit the human body curve, and promote sleep comfort. In addition, big data information on people's preferred sleeping positions can also be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the working principle of the utility model;

[0016] Figure 2 This is a schematic diagram of the airbag module of the present utility model;

[0017] Figure 3 This is a schematic diagram of the gas circuit connection of the gas circuit execution module of the present utility model;

[0018] Figure 4 This is the circuit diagram of the air pressure sensor group of the utility model;

[0019] Figure 5 This is the circuit diagram of the air pressure acquisition module of the utility model;

[0020] Figure 6 This is the circuit diagram of the surface pressure acquisition module of the utility model;

[0021] Figure 7 This is a circuit diagram of the gas circuit execution module of the utility model;

[0022] Figure 8 This is a schematic diagram of the air pump connection of the air circuit execution module of the utility model;

[0023] Figure 9 This is a schematic diagram of the solenoid valve connection of the gas circuit execution module of the utility model;

[0024] Figure 10 This is the pin connection diagram of the electrical main control module chip of this utility model.

[0025] Description of reference numerals:

[0026] 1. Airbag module; 2. Thin film pressure sensor; 3. Air pressure sensor; 4. Air pump; 5. Normally closed solenoid valve; 6. Three-way connector; 7. Air pipe. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solution of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the utility model provides an air pressure equalization control system, including an airbag module, an air pressure sensor group, a film pressure sensor group, an air pressure acquisition module, a surface pressure acquisition module, an air path execution module, an electrical main control module, an event processing and communication system, and a power supply module.

[0029] like Figure 2-Figure 3 As shown, the airbag module consists of eight detachable airbag strips made of environmentally friendly TPU, measuring 240mm x 800mm, arranged longitudinally. The airbag module is divided into single-person airbag mattresses (with airbag strips arranged longitudinally) and double-person airbag mattresses (with airbag strips arranged both transversely and longitudinally). The eight airbags are numbered sequentially according to their position, from ① to ⑧. Several thin-film pressure sensors 2 are affixed to the surface of each airbag strip at regular intervals, forming the thin-film pressure sensor assembly. Each airbag strip in the airbag module 1 has an air nozzle, which is connected to the air pressure sensor 3, air pump 4, normally closed solenoid valve 5, and three-way connector 6 via an air pipe 7.

[0030] like Figure 4-Figure 5As shown, 8 air pressure sensors 3 form an air pressure sensor group which is welded on the circuit board and connected to the circuit board of the air pressure acquisition module via the connector RS2r54-FEMALE; it is used to collect the air pressure data inside the airbag. Figure 4 The air pressure sensor is model TG6P39I and supports the IIC communication protocol. The sensor's SDA pin is connected to the GPIO of the microcontroller in the air pressure acquisition module and reused as the SDA pin of the IIC. The air pressure acquisition module is mainly composed of an STM32F405RGT7 microcontroller, a CH340E chip, an EEPROM chip, a power supply voltage regulator circuit, and a microcontroller minimum system. It should be noted that the air pressure acquisition module is powered by the power module. The microcontroller's UART_RX and UART_TX pins communicate with the computer through the CH340E chip and then through Macro-USB for program download and debugging. The air pressure acquisition module converts the microcontroller's UART_RX and UART_TX pins into RS485_A and RS485_B lines through the SIT3485ESA / NC transceiver to communicate with the electrical main control module, sending the collected air pressure data to the electrical main control module for subsequent processing.

[0031] like Figure 6 As shown, the thin film pressure sensor 2 is connected to the surface pressure acquisition module via a thin film pressure sensor group connector (model 321020RF0ABK00A04). It is worth noting that one surface pressure acquisition module can connect to eight thin film pressure sensors to collect surface pressure data from two adjacent airbags. Since the airbag module 1 has a total of eight airbags, four surface pressure acquisition modules are required, and its communication method adopts the Modbus communication protocol. The analog signal output by the thin film pressure sensor group is amplified by the 02_ANALOG_IN signal processing system, and then converted into a digital signal by the MCU ADC pin. It is then sent to the electrical main control module after being encoded by the MCU message. The MCU serial port pin on the surface pressure acquisition module is connected to the SIT3485ESA chip to convert it into two communication lines, RS485_A and RS485_B, for communication with the electrical main control module. The SW_PW_RES pin on the surface pressure acquisition module controls the start and stop of data acquisition by the thin film pressure sensor group. Data acquisition can be turned off when idle to reduce power consumption.

[0032] like Figure 7-Figure 9 As shown, the gas circuit execution module is connected to the chip of the main control module. There are two groups of relays in the gas circuit execution module, namely the gas circuit execution module air pump control relay group and the gas circuit execution module solenoid valve control relay group, a total of 16 relays, which control the on and off of the air pump and the normally closed solenoid valve respectively. Figure 8Figure 1 shows the air pump connection diagram for the air circuit actuator module. For example, the K1 relay, model LT218D, connects to the PMW_PUMP pin of the main electrical control module. This pin acts as the master switch for the air pump, ensuring subsequent actions are only taken when it is high. SW_HCURR_1 controls the air pump's on and off. K1's pins 4 and 3 connect to the air pump's power input and output, respectively. When the main electrical control module 13 simultaneously sets both the PMW_PUMP and SW_HCURR_1 pins high, air pump 1 activates, inflating airbag 1.

[0033] like Figure 9 The figure shows the solenoid valve connection diagram for the air circuit actuator module. Taking relay K9 as an example, pin 1 of the relay first passes through a MOSFET device. The source of the MOSFET is then connected in series with a transistor before being connected to the positive terminal of the D_DRV_L power supply. The gate is connected to the SW_LOW_C_1 pin of the electrical main control module. The control terminal of the transistor is connected to the PWM_VALVE pin of the electrical main control module. The PWM_VALVE pin is the master switch of the normally closed solenoid valve; the relay can only perform subsequent actions when it is at a high level. The SW_LOW_C_1 pin and the SW_LOW_C_2 pin together control the on and off of the K9 relay. Pins 4 and 3 of relay K9 are connected to the positive input and negative output terminals of the normally closed solenoid valve, respectively. The air circuit actuator module controls the corresponding relay pins using control signals from the electrical main control module, thereby controlling the inflation of the air pump and the deflation of the airbag module 1. The power module provides power to the air pressure acquisition module, the air pressure sensor group, the air circuit actuator module, the electrical main control module, and the surface pressure acquisition module.

[0034] like Figure 10 As shown in the figure, it is a pin connection diagram of the main control module chip. The electrical main control module is mainly composed of an STM32F405RGT7 single-chip microcomputer, an EEPROM chip, a power supply voltage stabilization system, an RS-485 transceiver system and a single-chip microcomputer minimum system. The USRT1 related pins of the electrical main control module are responsible for exchanging data with the event processing and communication system, the UART2 related pins are responsible for communicating with the air pressure acquisition module, the UART3 related pins of the electrical main control module are responsible for exchanging data with the surface pressure acquisition module, and the GPIO pins are responsible for controlling the air path execution module to perform airbag inflation and deflation operations.

[0035] When in use, when a person lies on the airbag cushion, the pressure conditions of various parts of the body can be judged more quickly and accurately, thereby better controlling the inflation and deflation of airbags in different areas, so that the mattress airbags can provide sufficient support to various parts of the human body, fit the human body curve, and promote sleep comfort. In addition, big data information on a person's preferred sleeping position can also be obtained.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smart mattress air pressure balance control system, characterized in that: The invention comprises an airbag module, an air pressure sensor group, a thin film pressure sensor group, an air pressure acquisition module, a surface pressure acquisition module, an air circuit execution module, and an electrical main control module, wherein the airbag module comprises a plurality of detachable airbag strips, the air pressure sensor group comprises a plurality of air pressure sensors (3), and the thin film pressure sensor group comprises a plurality of thin film pressure sensors (2) uniformly distributed on the surface of the airbag module (1); each airbag module (1) is connected to the air pressure sensor (3) via an air pipe (7); the air pressure sensor group is electrically connected to the air pressure acquisition module; the air pressure acquisition module is communicatively connected to the electrical main control module; the electrical main control module is electrically connected to the air circuit execution module for sending a control signal of an air pump (4) thereto; and a power supply module is also included; the power supply module supplies power to the air pressure acquisition module, the air pressure sensor group, the air circuit execution module, the electrical main control module, the thin film pressure sensor group, and the surface pressure acquisition module.

2. The smart mattress air pressure balance control system according to claim 1, characterized in that: The air circuit execution module includes an air pump (4) and a normally closed electromagnetic valve (5); the air bag module (1) is connected to the air pressure sensor group, the air pump (4) and the normally closed electromagnetic valve (5) via a three-way connector (6) and an air pipe (7); a relay circuit board is provided in the air circuit execution module, which controls the relay pin switch by receiving a control signal from the electrical main control module, thereby controlling the inflation of the air pump (4) and the deflation of the air bag module (1).

3. The smart mattress air pressure balance control system according to claim 1, characterized in that: The air pressure acquisition module is connected to the electrical main control module via an RS485 bus and is used to send the collected air pressure data to the electrical main control module for subsequent processing.

4. The smart mattress air pressure balance control system according to claim 1, characterized in that: The airbag module (1) is composed of eight detachable environmentally friendly TPU airbag strips arranged in a longitudinal / transverse / longitudinal / transverse combination. The airbag module (1) composed of the eight airbag strips is connected to the eight air pressure sensors (3) of the air pressure sensor group through air pipes (7). The air pressure sensor group is welded on a circuit board and connected to the circuit board of the air pressure acquisition module through a connector for collecting air pressure data inside the airbag strips.

5. The smart mattress air pressure balance control system according to claim 1, characterized in that: The air pressure acquisition module includes an STM32 chip, an EEPROM memory chip, a power supply voltage stabilization circuit and a single-chip computer minimum system, which is used to receive air pressure data transmitted by the air pressure acquisition module, receive airbag surface pressure data transmitted by the surface pressure acquisition module, and forward current internal air pressure data and surface pressure data to a host computer; the host computer is connected to the electrical main control module, and is used to receive the air pressure data and airbag surface pressure data uploaded by the electrical main control module, make decisions on the control strategy, set and adjust the airbag target air pressure value and send it to the electrical main control module, thereby controlling the inflation and deflation of the airbag.

6. The smart mattress air pressure balance control system according to claim 4, characterized in that: The air circuit execution module is composed of 8 air pumps (4), 16 three-way connectors (6), 8 normally closed solenoid valves (5), 16 relays and corresponding circuit boards. Each air pump (4) is connected to 2 three-way connectors (6), 1 air bag and 1 air pressure sensor (3) through an air pipe (7); the 8 normally closed solenoid valves (5) are respectively connected to the relay pins in the air circuit execution module, and the air pump (4) is respectively connected to the corresponding pins of the remaining 8 relays. The 8 relays form a group, one group controls the deflation of the air bag, and the remaining group is responsible for controlling the inflation of the air pump (4).

7. The smart mattress air pressure balance control system according to claim 1, characterized in that: The air pressure sensor (3) is of model TG6P39I and supports IIC communication protocol. The air pressure acquisition module is composed of an STM32F405RGT7 single-chip microcomputer, a CH340E chip, an EEPROM chip, a power supply voltage stabilization circuit and a single-chip microcomputer minimum system.

8. The smart mattress air pressure balance control system according to claim 1, characterized in that: The electrical main control module is composed of an STM32F405RGT7 single-chip microcomputer, an EEPROM chip, a power supply voltage stabilization system, an RS-485 transceiver system and a single-chip microcomputer minimum system. The USRT1-related pins of the electrical main control module are responsible for exchanging data with the event processing and communication system, the UART2-related pins are responsible for communicating with the air pressure acquisition module, the UART3-related pins are responsible for exchanging data with the surface pressure acquisition module, and the GPIO pins are responsible for controlling the air path execution module to perform airbag inflation and deflation operations.

9. A smart mattress, characterized in that: The invention comprises a mattress body and an intelligent mattress air pressure equalization control system as described in any one of claims 1 to 8.

Images