一种无线通信的压力变送装置
By integrating a wireless communication module and a power management pressure transmitter, the problems of complex wiring in traditional pressure monitoring equipment and high power consumption of existing wireless devices are solved, achieving efficient and reliable pressure monitoring, reducing operating costs and improving system safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ONE TWO THREE INTERNET OF THINGS TECH CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional pressure monitoring equipment has complex wiring and high costs, while existing wireless equipment has high power consumption and unstable communication, which affects the reliability and accuracy of the monitoring system.
Design a pressure transmitter with wireless communication, integrating a wireless communication module, a pressure sensor, and a power supply module. It adopts a hollow cylindrical structure and integrates a display panel and a main control circuit board. It has pressure monitoring, data display, and wireless communication functions. Power management optimizes power usage, and a 4G wireless communication module is used to achieve remote real-time monitoring.
It simplifies equipment installation and maintenance, reduces operating costs, improves the reliability and accuracy of the monitoring system, and can promptly detect potential safety risks and prevent accidents caused by abnormal pressure.
Smart Images
Figure CN224518003U_ABST
Abstract
Claims
1. A pressure transmitter for wireless communication, characterized by Includes the device housing (1); The device housing (1) is a hollow cylinder with a cylindrical circumferential surface and an axial front and rear end surface; A display panel (2) is provided on the front end of the device housing (1), and a main control circuit board is provided inside the device housing (1); The first side of the cylindrical circumference of the device housing (1) is provided with a pressure connection port (3); the second side of the cylindrical circumference of the device housing (1) is provided with an antenna receiving cavity (4), and the antenna receiving cavity (4) is connected to an antenna outlet (5). The pressure connection port (3) is disposed opposite to the antenna receiving cavity (4) on the cylindrical circumferential surface of the device housing (1); A front fixing cover (6) is provided at the front end of the device housing (1), and the front fixing cover (6) fixes the display panel (2) at the front end of the device housing (1); a rear fixing cover (7) is provided at the rear end of the device housing (1), and the rear fixing cover (7) fixes the main control circuit board inside the device housing (1). The main control circuit board is equipped with a main controller (9), a wireless communication module (10), a power supply module (11), a pressure sensing interface (12), and a power supply switch module (13). The main controller (9) is connected to the wireless communication module (10), the power supply module (11), the pressure sensing interface (12), and the power supply switch module (13). The power supply module (11) is connected to the wireless communication module (10) through the power supply switch module (13). The pressure sensing interface (12) is connected to a pressure sensor (19), which is located at the pressure connection port (3). The wireless communication module (10) is connected to an antenna (8), which is located inside the antenna receiving cavity (4) and extends out along the antenna outlet (5).
2. The pressure transmitter of claim 1, wherein, The display panel (2) is equipped with a display screen (14) and buttons; The display screen (14) and buttons are both connected to the main controller (9), and the buttons are located at the bottom of the display screen (14); The buttons include a wake-up button (15), an increase button (16), and a decrease button (17), with the wake-up button (15) positioned between the increase button (16) and the decrease button (17).
3. The pressure transmitter of claim 2 wherein, The power module (11) includes a battery VBAT, a boost unit (11.1), and a first buck unit (11.2). The battery VBAT is connected to the input terminal of the boost unit (11.1) and the input terminal of the first buck unit (11.2); The output terminal of the first step-down unit (11.2) is connected to the first voltage terminal VCC1, and the output terminal of the step-up unit (11.1) is connected to the second voltage terminal VCC2. The first voltage terminal VCC1 is connected to the main controller (9), and the second voltage terminal VCC2 is connected to the power supply switch module (13).
4. The wireless communication pressure transmitter according to claim 3, characterized in that, The boost unit (11.1) includes a boost chip U2; The boost chip U2 has an input pin IN, an output pin VOUT, an enable pin EN, an overvoltage protection pin OVP, a power indicator pin PG, a programming input pin ISET, an analog ground pin AGND, a heat dissipation pin EPAD, two digital ground pins PGND, a feedback pin FB, and two power switch pins SW. The input pin IN of the boost chip U2 is the input terminal of the boost unit, and the output pin VOUT is the output terminal of the boost unit. The input pin IN of the boost chip U2 is connected to the battery VBAT, and is connected to resistor R7, resistor R6, inductor L1 and capacitor C8. The other end of capacitor C8 is grounded, the other end of resistor R6 is connected to the enable pin EN of boost chip U2, the other end of resistor R7 is connected to the power indicator pin PG, and the other end of inductor L1 is connected to both power switch pins SW. The programming input pin ISET of the boost chip U2 is connected to a resistor R10, and the other end of the resistor R10 is grounded. The analog ground pin AGND of the boost chip U2 is connected to the heat sink pin EPAD, the overvoltage protection pin OVP, and the two digital ground pins PGND, and is grounded. The output pin VOUT of the boost chip U2 is connected to capacitor C9, resistor R9, capacitor C10, and capacitor C11, and is also connected to the second voltage terminal. The other end of capacitor C9 is connected to the other end of resistor R9 and the feedback pin FB of boost chip U2, and is also connected to resistor R11; The other end of capacitor C10 is connected to the other end of capacitor C11 and the other end of resistor R11, and is grounded.
5. The pressure transmitter of claim 3 wherein, The power supply switch module (13) includes a display switch unit (13.1) and a communication power switch unit (13.2). The display switch unit (13.1) includes a first voltage input terminal, a first voltage output terminal, and a first controlled terminal; The first voltage input terminal is connected to the first voltage terminal VCC1, the first voltage output terminal is connected to the display screen (14), and the first controlled terminal is connected to the main controller (9); The communication power switch unit (13.2) includes a second voltage input terminal, a second voltage output terminal, and a second controlled terminal; The second voltage input terminal is connected to the second voltage terminal VCC2, the second voltage output terminal is connected to the wireless communication module (10), and the second controlled terminal is connected to the main controller (9).
6. The pressure transmitter of claim 5, wherein, The display switch unit (13.1) also includes transistor Q5 and MOSFET Q4; The base of transistor Q5 is connected to resistors R19 and R21 and capacitor C49. The other end of resistor R19 is connected to the first controlled terminal DIS CON, and the other end of resistor R21 is connected to the emitter of transistor Q5 and the other end of capacitor C49, and grounded. The collector of transistor Q5 is connected to resistor R20 and is connected to the gate of MOSFET Q4. The source of MOSFET Q4 is connected to the other end of resistor R20 and the first voltage input terminal. The drain of MOSFET Q4 is connected to capacitor C47, which is also connected to the first voltage output terminal. The other end of capacitor C47 is grounded, and the first voltage output terminal is connected to the display power supply terminal DISPLAY_VCC.
7. The pressure transmitter of claim 5 wherein, The communication power switch unit (13.2) also includes transistor Q11 and MOSFET Q7; The base of transistor Q11 is connected to resistors R39 and R46 and capacitor C53. The other end of resistor R39 is connected to the second controlled terminal EN_4G, and resistor R46 is connected to the other end of capacitor C53 and the emitter of transistor Q11, and grounded. The collector of transistor Q11 is connected to resistors R38 and R36. The other end of resistor R38 is connected to the gate of MOSFET Q7, and the other end of resistor R36 is connected to the source of MOSFET Q7 and the second voltage terminal VCC2. It is also connected to capacitors C45, C44 and C26. The other end of capacitor C45 is connected to the other end of capacitor C44 and the other end of capacitor C26, and is grounded. The drain of MOSFET Q7 is connected to capacitors C29, C30, C46, and C51, and is connected to the second voltage output terminal. The second voltage terminal VCC2 is connected to the communication power terminal VDD_4G; The other end of capacitor C29 is connected to the other end of capacitor C39, the other end of capacitor C46, and the other end of capacitor C51, and is grounded.
8. The pressure transmitter of claim 3 wherein, The power module (11) also includes an external power interface, which is connected to a second step-down unit. The second step-down unit is connected to the input terminal of the boost unit (11.1) and the input terminal of the first step-down unit (11.2).
9. The wireless communication pressure transmitter of claim 1, wherein, The wireless communication module (10) adopts a 4G wireless communication module, including a 4G wireless communication chip U7; The 4G wireless communication chip U7 is connected to a SIM card slot (18), an antenna interface, and a communication bus; The communication bus includes 4G signal receiving lines and 4G signal transmitting lines.
10. The pressure transmitter of claim 9, wherein, The 4G wireless communication chip U7 has a SIM pin group, an antenna pin ANT_MAIN, a communication output power pin VDD_EX, a 4G transmit pin TX_4G, a 4G receive pin RX_4G, and a power supply pin VD. The main controller (9) is equipped with a serial output pin USART1_TX and a serial input pin USART1_RX; The SIM pin group is connected to the SIM card holder (18), and the SIM card holder (18) is connected to the SIM card (20). The antenna pin ANT_MAIN is connected to the Zener diode D5 and then to the antenna interface. The antenna pin ANT_MAIN is connected to the negative terminal of Zener diode D5, and the positive terminal of Zener diode D5 is grounded; The antenna interface is connected to the antenna (8), which includes a signal pin and two ground pins; The power supply pin VD is connected to the communication power supply terminal VDD_4G; The 4G signal receiving circuit includes transistor Q8; The base of transistor Q8 is connected to capacitor C31 and resistor R25. The other end of capacitor C31 is connected to the other end of resistor R25 and the communication output power pin VDD_EX. The collector of transistor Q8 is connected to resistor R26 and is connected to the 4G receiver pin RX_4G. The other end of resistor R26 is connected to the communication output power pin VDD_EX. The emitter of transistor Q8 is connected to the serial output pin USART1_TX of the main controller (9); The 4G signal transmission line includes transistor Q10; The base of transistor Q10 is connected to capacitor C52 and resistor R47. The other end of capacitor C52 is connected to the other end of resistor R47 and is connected to the communication power output pin VDD_EX. The emitter of transistor Q10 is connected to the 4G emitter pin TX_4G; The collector of the triode Q10 is connected with a resistor R41 and with the serial input pin USART1_RX of the main controller (9), the other end of the resistor R41 being connected with the first voltage terminal VCC1.