Multi-channel wireless pressure transmitter

Abstract

The invention discloses a multi-channel wireless pressure transmitter, and belongs to the technical field of pressure transmitters. The pressure transmitter comprises an explosion-proof box, and a multi-channel measuring mechanism, a positioning module, a wireless communication module, a Bluetooth function module, a magnetic reset module, an acceleration monitoring module and a main control unit are arranged in the explosion-proof box. The multi-channel measuring mechanism comprises a plurality of pressure measuring modules, the positioning module is integrated with a Beidou positioning chip, the wireless communication module is composed of an NB-IoT / 4G communication module, a high-gain antenna and an SIM card function module, and the magnetic reset module is composed of a magnetic sensing element and a reset control unit. Multi-channel pressure measurement, NB-IoT / 4G wireless communication, a Bluetooth function, Beidou positioning, magnetic reset, displacement and angle monitoring alarm and an SIM card function are integrated, and a highly integrated intelligent pressure detection terminal is formed. Therefore, the crossing from single pressure measurement to multi-parameter monitoring, remote management and equipment state self-diagnosis is realized, and diversified monitoring requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure transmitters, and more particularly to a multi-channel wireless pressure transmitter. Background Art

[0002] In fields such as smart city construction and industrial automation, there are many demands for pressure testing equipment, including high precision, multi-function, convenient installation, stable communication, and easy maintenance.

[0003] Traditional pressure transmitters can often only measure a single pressure signal, failing to meet the requirements of applications that require simultaneous monitoring of multiple nodes. They often rely on wired transmission, resulting in high wiring costs and difficulty adapting to mobile monitoring scenarios. Traditional devices lack intelligent verification mechanisms, making data loss more likely in complex environments. Their lack of positioning capabilities makes it impossible to implement device tracking and regionalized pressure management. Furthermore, when software anomalies or board failures occur, the reset operation of traditional pressure transmitters is often complex, requiring the device casing to be opened for internal operation. This is not only time-consuming and labor-intensive, but may also introduce new failure risks. Therefore, developing a new type of pressure transmitter is of great significance. In light of this, we propose a multi-channel wireless pressure transmitter. Summary of the Invention

[0004] The object of the present invention is to provide a multi-channel wireless pressure transmitter to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A multi-channel wireless pressure transmitter includes an explosion-proof box, in which a multi-channel measuring mechanism, a positioning module, a wireless communication module, a Bluetooth function module, a magnetic reset module, an acceleration monitoring module and a main control unit are arranged; The multi-channel measurement mechanism includes multiple pressure measurement modules, which can synchronously collect multiple pressure signals. The pressure measurement modules are adapted to the standardized interface of the main control unit; The positioning module integrates the Beidou positioning chip and communicates bidirectionally with the main control unit to obtain the device's geographic location information; The wireless communication module consists of an NB-IoT / 4G communication module, a high-gain antenna, and a SIM card function module. The NB-IoT / 4G communication module uses the high-gain antenna to achieve remote transmission of pressure data, positioning information, device status, etc. The Bluetooth function module contains a Bluetooth module that can establish a connection with an external smart terminal for parameter configuration, device status query and real-time data viewing; The magnetic reset module consists of a magnetic sensing element and a reset control unit. When the external magnetic field reaches the set threshold, it triggers the reset of the main control unit and related boards. The acceleration monitoring module is equipped with an acceleration sensor to collect the acceleration data of the equipment in real time and transmit it to the main control unit to determine whether there is any displacement or vibration abnormality of the equipment; The main control unit is centered around the main control chip and interacts with the multi-channel pressure measurement module, positioning module, wireless communication module, Bluetooth function module, magnetic reset module, acceleration monitoring module, and button and display module to complete data processing, command distribution, and overall equipment control. Button and display module: supports local manual operation and basic status display, and two-way communication with the main control unit.

[0006] Preferably, a mounting bracket is provided on the explosion-proof box, and a plurality of aviation plugs and terminal blocks are provided at the bottom of the explosion-proof box. The terminal blocks are connected to the square plastic shell antenna through the plastic shell antenna connecting line, and the aviation plugs are connected to the metal joints through the cable belt metal bellows.

[0007] Preferably, in the multi-channel measurement mechanism, the measurement range of each pressure measurement module can be independently configured, and the main control unit can perform synchronous calibration and compensation operations on multiple channels of pressure data.

[0008] Preferably, the high-gain antenna of the wireless communication module is designed with optimized impedance matching and works with the NB-IoT / 4G communication module to improve data transmission stability in complex environments.

[0009] Preferably, the acceleration monitoring module is provided with a three-axis acceleration sensor, which can monitor the acceleration changes of the device in the X, Y and Z directions in real time and transmit the data in vector form to the main control unit.

[0010] Preferably, the reset control unit of the magnetic reset module is provided with an anti-false triggering mechanism, which triggers the main control unit and related boards to reset when the magnetic sensing element detects magnetic field changes for multiple times in succession.

[0011] Preferably, the multi-channel measurement mechanism further includes a temperature compensation module for real-time monitoring of the operating temperature of each pressure measurement module and transmitting the temperature data to the main control unit, which performs real-time temperature compensation on the pressure measurement results according to the temperature data.

[0012] Preferably, the positioning module combines the data of the acceleration monitoring module to trigger an alarm and upload the positioning and abnormal information when the device posture is abnormal, the pressure data is out of range, or the device fails.

[0013] Preferably, the SIM card function module of the wireless communication module relies on the operator network to provide a basic communication link for NB-IoT / 4G communication.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention features multi-channel integrated innovation: it integrates multi-channel pressure measurement, NB-IoT / 4G wireless communication, Bluetooth functionality, Beidou positioning, magnetic reset, displacement and angle monitoring alarm, and SIM card functionality into a highly integrated intelligent pressure detection terminal. This achieves a leap from single pressure measurement to multi-parameter monitoring, remote management, and device status self-diagnosis, supports multiple sensor types, and meets diverse monitoring needs.

[0015] (2) This invention uses NB-IoT / 4G communication technology combined with high-gain antennas to significantly reduce device power consumption and extend device battery life while ensuring stable data transmission. NB-IoT's wide coverage and strong penetration make it suitable for various complex environments, solving the transmission problems of traditional wireless communication methods when the signal is weak or the distance is long. The multiple verification design of the high-gain antenna further improves communication stability, providing reliable communication guarantee for remote monitoring of a large number of dispersed devices in smart cities.

[0016] (3) The design of the magnetic reset function of the present invention breaks the limitation of the complex reset operation of traditional equipment. Reset can be completed through a simple magnetic suction operation, reducing the difficulty and cost of equipment maintenance; the application of Bluetooth APP realizes the wireless and intelligent setting of on-site parameters and equipment management, improving work efficiency; the introduction of SIM card function facilitates the network configuration and remote management of the equipment, and enhances the flexibility and scalability of the equipment. (4) The present invention combines displacement monitoring with installation and panel angle monitoring alarm mechanisms to monitor the installation and operating posture of the equipment in real time. When the equipment moves abnormally and tilts at an angle, the alarm information is promptly reported, providing a strong guarantee for the safe operation of the equipment and filling the gap in traditional pressure transmitters in monitoring the equipment's own status. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a circuit system block diagram of the multi-channel wireless pressure transmitter of the present invention; Figure 2 It is a schematic diagram of the overall structure of the multi-channel wireless pressure transmitter of the present invention.

[0018] Explanation of the numbers in the figure: 1. Explosion-proof box; 2. Mounting bracket; 3. Shell; 4. Square plastic shell antenna; 5. First aviation plug; 6. Second aviation plug; 7. Cable with metal bellows; 8. Plastic shell antenna connecting wire; 9. Screw; 10. Circuit board; 11. External screw inner hole terminal block; 12. External screw inner pin terminal block; 13. Base; 14. Metal connector. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example: See also Figure 1-2 A multi-channel wireless pressure transmitter includes an explosion-proof box 1, in which a multi-channel measuring mechanism, a positioning module, a wireless communication module, a Bluetooth function module, a magnetic reset module, an acceleration monitoring module and a main control unit are arranged; The multi-channel measurement mechanism includes multiple pressure measurement modules that can synchronously collect multiple pressure signals. The pressure measurement modules are compatible with the standardized interfaces of the main control unit. The modular design enables flexible configuration, which not only allows for the synchronous collection of multiple pressure signals, but can also be expanded into a multi-physical quantity fusion monitoring platform. Each pressure measurement module uses a high-precision pressure sensor, and temperature sensors, gas concentration sensors, displacement sensors, etc. can also be used. These pressure measurement modules can simultaneously accurately measure pressure signals from multiple different sources. For example, in industrial pipelines, they can simultaneously measure the fluid pressure in the pipeline and the pressure at the branch pipeline, providing high-precision, synchronous, multi-parameter data acquisition capabilities. Through synchronous acquisition and precise measurement, the time difference during multi-point measurement is eliminated, the consistency of the data in the time dimension is guaranteed, and a reliable foundation for system-level analysis is provided.

[0021] The positioning module integrates a Beidou positioning chip and communicates bidirectionally with the main control unit to obtain the device's geographic location information. It can also combine data from the acceleration monitoring module to trigger an alarm and upload positioning and abnormal information when the device's posture is abnormal, the pressure data is out of range, or the device fails. The positioning module provides precise geographic location information and implements active intelligent alarms. The Beidou positioning chip has high-precision positioning capabilities and can quickly and accurately obtain the device's geographic location information. The positioning module is connected to the main control unit and transmits real-time positioning data to the main control unit. The main control unit can transmit positioning information data to the monitoring center as needed, making it easier for management personnel to track and manage the device's location. The positioning module combines data from the acceleration monitoring module to trigger an alarm and upload positioning and abnormal information when the device's posture is abnormal, the pressure data is out of range, or the device fails.

[0022] The wireless communication module consists of an NB-IoT / 4G communication module, a high-gain antenna, and a SIM card module. The NB-IoT / 4G communication module uses the high-gain antenna to remotely transmit pressure data, location information, device status, and other information. The SIM card provides the basic communication link for NB-IoT / 4G communications, relying on the carrier network. The device has a built-in NB-IoT / 4G chip and utilizes a square-shaped plastic-enclosed antenna (square-shaped plastic-enclosed antenna 4) combined with a high-gain antenna. The wireless communication module antenna connects to the NB-IoT / 4G module via a waterproof SMA male-screw-inner-hole IPEX1-30CM (male-screw-inner-hole terminal block 11) and a waterproof SMA male-screw-inner-pin IPEX1-30CM (male-screw-inner-pin terminal block 12). The SMA connectors have an IP68 waterproof rating. The antenna feeder connects to the main control circuit board via plastic-enclosed antenna cable 8, which uses a shielded design to minimize signal attenuation.

[0023] The Bluetooth function module contains a Bluetooth module that can establish a connection with the Bluetooth APP of an external smart terminal for parameter configuration, device status query and real-time data viewing. Users can conveniently set transmitter parameters, such as setting the pressure measurement range and data transmission interval, through a dedicated APP on a smart device such as a mobile phone or tablet. At the same time, they can also view the device's working status, pressure measurement data, battery power and other information in real time, facilitating on-site debugging and equipment management without the need for additional professional debugging tools.

[0024] The magnetic reset module consists of a magnetic sensing element and a reset control unit. When an external magnet approaches, causing the magnetic sensing element to detect a set threshold magnetic field, and the magnetic attraction lasts for a preset duration, the reset control unit triggers a reset of the main control unit and related boards, without requiring removal of the housing. A magnetic reset circuit, containing a magnetic sensing element and a reset control unit, is located on the transmitter's main control circuit board. When a magnet is applied to the outside of the pressure gauge for 5 seconds, the sensor detects that the magnetic field strength has reached the set threshold and transmits a signal to the reset control unit. Upon receiving the signal, the reset control unit triggers a board reset operation, restoring the device to its initial operating state. The magnetic reset module enables a safe and convenient soft reset of the device without opening the explosion-proof housing (which is complex, can damage the seal, introduce danger, or require power outages). This resolves common software freezes or abnormal status issues, greatly improving device availability and ease of maintenance.

[0025] The acceleration monitoring module, equipped with an accelerometer, collects real-time acceleration data from the device and transmits it to the main control unit. This data is used to determine whether the device is experiencing abnormal displacement or vibration, assisting with posture and fault monitoring. It also provides information on the device's safety status (e.g., whether it has been moved, tipped over, or impacted) and environmental vibration (e.g., vibrations from nearby construction or abnormal equipment operation). The module features a triaxial accelerometer that monitors acceleration changes in the X, Y, and Z axes in real time and transmits this data in vector form to the main control unit. The triaxial accelerometer provides full vector motion information. This data is used not only to trigger posture alarms but also to provide raw data for vibration analysis.

[0026] The main control unit is centered around the main control chip and interacts with the multi-channel pressure measurement module, positioning module, wireless communication module, Bluetooth function module, magnetic reset module, acceleration monitoring module, and button and display module to complete data processing, command distribution, function scheduling, and overall equipment control. As an information hub and control center, the main control unit is responsible for data acquisition, fusion processing (such as multi-channel synchronization and temperature compensation), logical judgment (alarm conditions), communication scheduling, command execution (reset), power consumption management, and other functions, and is the basis for realizing all advanced functions of the equipment.

[0027] The keypad and display module supports local manual operation and basic status display, and provides two-way communication with the main control unit. This module provides the most basic and reliable local operation and status indication, serving as a supplement or backup to Bluetooth interaction, especially when a smart device is not available or Bluetooth is faulty. Bidirectional communication means the main control unit can control the display content, and the user can input commands through keypad input.

[0028] SIM card functional module: This module uses a SIM card to enable NB-IoT / 4G communication through the carrier network. The SIM card provides an independent communication identity and data transmission channel. It allows users to select the appropriate carrier package and network service based on different application scenarios and needs, ensuring stable data communication between the device and the data monitoring center. The wireless communication module's network access method (SIM card) provides an independent communication channel with flexible carrier and package selection, which is essential for ensuring the reliable operation of NB-IoT / 4G remote communications.

[0029] In this application, the explosion-proof box 1 is provided with a mounting bracket 2, and the bottom of the explosion-proof box 1 is provided with multiple aviation plugs and terminal blocks. The terminal blocks are connected to the square plastic shell antenna 4 via the plastic shell antenna connection line 8. The aviation plug is connected to the metal connector 14 via the cable belt metal bellows 7. Among them, the metal connector 14 is provided with a base 13. The aviation plug includes a first aviation plug 5 and a second aviation plug 6. The terminal blocks include an external screw inner hole terminal block 11 and an external screw inner pin terminal block 12.

[0030] In this application, in a multi-channel measurement mechanism, the measurement range of each pressure measurement module can be independently configured, and the main control unit can perform synchronous calibration and compensation operations on multiple pressure data to ensure the consistency of multi-channel measurements.

[0031] In this application, the high-gain antenna of the wireless communication module is designed with optimized impedance matching and works with the NB-IoT / 4G communication module to improve the data transmission stability in complex environments.

[0032] In this application, the reset control unit of the magnetic reset module is provided with an anti-false triggering mechanism. When the magnetic sensing element detects a change in the magnetic field, it is necessary to meet the set threshold magnetic field three times in a row and the continuous magnetic attraction time reaches the preset time before the main control unit and related boards are triggered to reset.

[0033] In this application, the multi-channel measurement mechanism also includes a temperature compensation module, which is used to monitor the operating temperature of each pressure measurement module in real time and transmit the temperature data to the main control unit. The main control unit performs real-time temperature compensation on the pressure measurement results based on the temperature data to eliminate the impact of temperature changes on measurement accuracy.

[0034] The wireless multi-channel pressure transmitter provided by this invention simultaneously measures and transmits multiple pressure signals, meeting the needs of complex scenarios. It features wireless communication, Bluetooth, Beidou positioning, and mobile alarms, facilitating device parameter setting, information viewing, location tracking, and abnormality warnings. A high-gain antenna ensures stable communication and operates in a temperature range of -30°C to 70°C. Furthermore, it can accurately monitor the installation position, mounting angle, and panel angle, providing abnormality alarms, improving the safety and stability of device operation. Its magnetic reset function eliminates the difficulties associated with traditional reset operations.

[0035] Equipment Use: 1. Adjust the transmitter's mounting angle based on the location and orientation of the on-site pipeline valves. Install the device in the appropriate position to ensure full contact between the pressure sensing interface and the measured medium. After installation, check the device's mounting angle on the data monitoring platform to ensure it is within the correct range. Also, select a channel with the appropriate pressure measurement range to connect to the corresponding monitoring point based on actual monitoring needs.

[0036] 2. The device automatically begins measuring multiple pressure signals and uploads pressure data, device status, angle information, and positioning information to the data monitoring platform via the NB-IoT / 4G communication module. During data transmission, pressure data from all channels is clearly distinguished and ensured to be accurate.

[0037] 3. Users can view and manage the device's operating status, pressure measurement data, battery level, angle information, etc. at any time through the Bluetooth app. They can also remotely monitor and manage the device on the monitoring platform, such as modifying parameters and viewing historical data. When viewing pressure data, the measurement results of each channel can be clearly identified.

[0038] 4. When pressure data is abnormal, equipment fails, or acceleration occurs and the panel angle is tilted, the system automatically sends an alarm message. Maintenance personnel will go to deal with the equipment problem based on the location information, angle information and fault type in the alarm message.

[0039] 5. If the device requires a reset due to software anomalies or board failure, the operator can use a magnet to attract the device to the magnetic reset area marked on the instrument housing for 5 seconds to complete the device reset operation. After the reset, check whether the device has returned to normal operation, including whether the two pressure measurement channels can measure and transmit data normally.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel wireless pressure transmitter, characterized in that: It comprises an explosion-proof box (1), wherein a multi-channel measuring mechanism, a positioning module, a wireless communication module, a Bluetooth function module, a magnetic reset module, an acceleration monitoring module and a main control unit are arranged in the explosion-proof box (1); The multi-channel measurement mechanism includes multiple pressure measurement modules, which can synchronously collect multiple pressure signals. The pressure measurement modules are adapted to the standardized interface of the main control unit; The positioning module integrates a Beidou positioning chip and communicates bidirectionally with the main control unit to obtain the device's geographic location information; The wireless communication module consists of an NB-IoT / 4G communication module, a high-gain antenna, and a SIM card function module. The NB-IoT / 4G communication module realizes remote transmission of pressure data, positioning information, device status, etc. via the high-gain antenna; The Bluetooth function module includes a Bluetooth module that can establish a connection with an external smart terminal for parameter configuration, device status query and real-time data viewing; The magnetic reset module consists of a magnetic sensing element and a reset control unit. When the external magnetic field reaches a set threshold, it triggers the main control unit and related boards to reset; The acceleration monitoring module is equipped with an acceleration sensor to collect the acceleration data of the device in real time and transmit it to the main control unit to determine whether there is any displacement or vibration abnormality of the device; The main control unit is centered around the main control chip and interacts with the multi-channel pressure measurement module, positioning module, wireless communication module, Bluetooth function module, magnetic reset module, acceleration monitoring module, and button and display module to complete data processing, command distribution, and overall equipment control. Button and display module: supports local manual operation and basic status display, and two-way communication with the main control unit.

2. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The explosion-proof box (1) is provided with a mounting bracket (2), and the bottom of the explosion-proof box (1) is provided with a plurality of aviation plugs and wiring sockets, the wiring sockets are connected to the square plastic shell antenna (4) via a plastic shell antenna connecting line (8), and the aviation plugs are connected to the metal connector (14) via a cable with a metal corrugated tube (7).

3. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: In the multi-channel measurement mechanism, the measurement range of each pressure measurement module can be configured independently, and the main control unit can perform synchronous calibration and compensation operations on multiple pressure data.

4. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The high-gain antenna of the wireless communication module is designed with optimized impedance matching and works in conjunction with the NB-IoT / 4G communication module to improve data transmission stability in complex environments.

5. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The acceleration monitoring module is equipped with a three-axis acceleration sensor, which can monitor the acceleration changes of the device in the X, Y, and Z directions in real time and transmit the data in vector form to the main control unit.

6. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The reset control unit of the magnetic reset module is provided with an anti-false triggering mechanism. When the magnetic sensing element detects magnetic field changes for multiple times in succession, it triggers the main control unit and related boards to reset.

7. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The multi-channel measurement mechanism also includes a temperature compensation module for real-time monitoring of the operating temperature of each pressure measurement module and transmitting the temperature data to the main control unit, which performs real-time temperature compensation on the pressure measurement results according to the temperature data.

8. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The positioning module combines the data from the acceleration monitoring module to trigger an alarm and upload positioning and abnormal information when the device posture is abnormal, the pressure data is out of range, or the device fails.

9. The multi-channel wireless pressure transmitter according to claim 1, characterized in that: The SIM card function module of the wireless communication module relies on the operator network to provide the basic communication link for NB-IoT / 4G communication.

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