Intelligent excess pressure monitoring device

Abstract

The intelligent residual pressure monitoring device comprises a residual pressure sensor, a mounting plate, a sealing cover, a cover opening and closing control mechanism, a single-chip microcomputer, an electromagnetic valve and a pump machine, the residual pressure sensor is mounted on the surface of the mounting plate, the sealing cover is mounted on the mounting plate, the residual pressure sensor is covered with the sealing cover, the cover opening and closing control mechanism is connected with the sealing cover, and the single-chip microcomputer is connected with the electromagnetic valve. The sealing cover is sequentially connected with an electromagnetic valve and a pump machine through a pipeline, and the residual pressure sensor, the cover opening and closing control mechanism, the electromagnetic valve and the pump machine are all electrically connected with a single chip microcomputer; according to the technical scheme, the cover opening and closing control mechanism closes the sealing cover, standard pressure (such as 0Pa, 50Pa and 100Pa) is generated and injected into the sealing cover for calibration reference under the cooperation of the pump machine and the electromagnetic valve, the output of the residual pressure sensor is corrected through linear regression, data before and after calibration are compared, and calibration is repeated if the error is greater than 1Pa, so that automatic calibration of the residual pressure sensor is realized, and the calibration accuracy is improved. And the reliability of the residual pressure monitoring device is improved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent overpressure monitoring equipment, and in particular to an intelligent overpressure monitoring device. Background Technology

[0002] Overpressure monitoring devices are automated control equipment used in key areas such as building lobbies, stairwells, and refuge rooms. Their core function is to monitor and regulate the air pressure difference between areas in real time to ensure the effectiveness of safe evacuation routes. Currently, overpressure monitoring devices on the market lack automatic calibration functions and mostly rely on manual periodic operation, making it difficult to eliminate inherent sensor deviations in a timely manner, resulting in insufficient reliability. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the aforementioned problems in the prior art, this utility model provides an intelligent residual pressure monitoring device.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] An intelligent residual pressure monitoring device includes a residual pressure sensor, a mounting plate, a sealing cover, an opening and closing cover control mechanism, a microcontroller, a solenoid valve, and a pump.

[0008] The residual pressure sensor is mounted on the surface of the mounting plate;

[0009] The sealing cover is mounted on the mounting plate and houses the residual pressure sensor inside it;

[0010] The opening and closing cover control mechanism is connected to the sealing cover and is used to control the opening and closing of the sealing cover;

[0011] The sealing cover is connected to the solenoid valve and the pump in sequence via pipelines;

[0012] The residual pressure sensor, the cover opening and closing control mechanism, the solenoid valve, and the pump are all electrically connected to the microcontroller.

[0013] Preferably, the mounting plate has an annular groove corresponding to the sealing cover, and sealing grooves are formed on both sides of the inner wall of the annular groove, with sealing rings installed in the sealing grooves.

[0014] Preferably, the opening and closing cover control mechanism includes a rotating base, a connecting plate, and a control motor;

[0015] The rotary seat is fixedly mounted on the mounting plate;

[0016] One end of the connecting plate is fixedly connected to the sealing cover, and the other end of the connecting plate is rotatably connected to the rotating base via a rotating shaft, which is connected to the control motor.

[0017] Preferably, the control motor is a micro servo motor or a micro stepper motor with electromagnetic braking function.

[0018] Preferably, it also includes a temperature sensor, which is mounted on the mounting plate and electrically connected to the microcontroller.

[0019] Preferably, it also includes a timer, which is electrically connected to the microcontroller.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are as follows: By adopting the above technical solution, the opening and closing cover control mechanism closes the sealing cover, and through the cooperation of the pump and solenoid valve, a standard pressure (such as 0Pa, 50Pa, 100Pa) is generated and injected into the sealing cover for calibration reference. The output of the residual pressure sensor is corrected by linear regression, and the data before and after calibration are compared. If the error is >1Pa, the calibration is repeated, thereby realizing the automatic calibration of the residual pressure sensor and improving the reliability of the residual pressure monitoring device. Attached Figure Description

[0022] Figure 1 A schematic diagram of an intelligent residual pressure monitoring device;

[0023] Figure 2 This is a schematic diagram of a smart overpressure monitoring device connected to a solenoid valve and a pump.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Mounting plate;

[0026] 2. Overpressure sensor;

[0027] 3. Sealing cover;

[0028] 4. Opening and closing cover control mechanism;

[0029] 5. Solenoid valve;

[0030] 6. Pumps;

[0031] 7. Annular groove. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please refer to Figures 1 to 2This utility model provides an intelligent residual pressure monitoring device, including a residual pressure sensor 2, a mounting plate 1, a sealing cover 3, an opening and closing cover control mechanism 4, a microcontroller, a solenoid valve 5, and a pump 6.

[0034] The residual pressure sensor 2 is mounted on the surface of the mounting plate 1;

[0035] The sealing cover 3 is installed on the mounting plate 1 and covers the residual pressure sensor 2 inside it;

[0036] The opening and closing cover control mechanism 4 is connected to the sealing cover 3 and is used to control the opening and closing of the sealing cover 3;

[0037] The sealing cover 3 is connected in sequence to the solenoid valve 5 and the pump 6 via pipelines;

[0038] The residual pressure sensor 2, the cover opening and closing control mechanism 4, the solenoid valve 5, and the pump 6 are all electrically connected to the microcontroller.

[0039] In use, the opening and closing control mechanism 4 closes the sealing cover 3. With the cooperation of the pump 6 and the solenoid valve 5, a standard pressure (such as 0Pa, 50Pa, 100Pa) is generated and injected into the sealing cover 3 for calibration reference. The output of the residual pressure sensor 2 is corrected by linear regression. The data before and after calibration are compared. If the error is >1Pa, the calibration is repeated, thereby realizing the automatic calibration of the residual pressure sensor 2 and improving the reliability of the residual pressure monitoring device.

[0040] In this embodiment, the mounting plate 1 has an annular groove 7 corresponding to the sealing cover 3. Both sides of the inner wall of the annular groove 7 are provided with sealing grooves, and sealing rings are installed in the sealing grooves. With the setting of sealing grooves and sealing rings, the connection and sealing performance between the sealing cover 3 and the mounting plate 1 are greatly improved.

[0041] In this embodiment, the opening and closing cover control mechanism 4 includes a rotating base, a connecting plate, and a control motor;

[0042] The rotating base is fixedly mounted on the mounting plate 1;

[0043] One end of the connecting plate is fixedly connected to the sealing cover 3, and the other end of the connecting plate is rotatably connected to the rotating base via a rotating shaft, and the rotating shaft is connected to the control motor;

[0044] In use, the opening and closing of the sealing cover 3 is controlled by controlling the rotation of the rotating shaft driven by the motor.

[0045] In this embodiment, the control motor is a micro servo motor or a micro stepper motor with electromagnetic braking function. When in use, the micro servo motor has a self-locking function, which can prevent the sealing cover 3 from opening automatically due to excessive pressure inside the sealing cover 3. Similarly, the micro stepper motor with electromagnetic braking function also has a self-locking function, which is also used to prevent the sealing cover 3 from opening automatically due to excessive pressure inside the sealing cover 3.

[0046] In this embodiment, a temperature sensor is also included. The temperature sensor is mounted on the mounting plate 1 and electrically connected to the microcontroller. The temperature sensor monitors the external ambient temperature, and automatically triggers the calibration function if there is a sudden change in the environment (such as a temperature change > 5°C).

[0047] In this embodiment, a timer is also included. The timer is electrically connected to the microcontroller and can realize the function of periodic automatic calibration.

[0048] The working principle of this utility model is as follows:

[0049] The opening and closing control mechanism 4 closes the sealing cover 3. With the cooperation of the pump 6 and the solenoid valve 5, a standard pressure (such as 0 Pa, 50 Pa, 100 Pa) is generated and injected into the sealing cover 3 for calibration reference. The output of the residual pressure sensor 2 is corrected by linear regression. The data before and after calibration are compared. If the error is >1 Pa, the calibration is repeated, thereby realizing the automatic calibration of the residual pressure sensor 2 and improving the reliability of the residual pressure monitoring device.

[0050] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0051] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent excess pressure monitoring device, characterized in that, It includes a pressure sensor, mounting plate, sealing cover, opening and closing cover control mechanism, microcontroller, solenoid valve and pump; The residual pressure sensor is mounted on the surface of the mounting plate; The sealing cover is mounted on the mounting plate and houses the residual pressure sensor inside it; The opening and closing cover control mechanism is connected to the sealing cover and is used to control the opening and closing of the sealing cover; The sealing cover is connected to the solenoid valve and the pump in sequence via pipelines; The residual pressure sensor, the cover opening and closing control mechanism, the solenoid valve, and the pump are all electrically connected to the microcontroller.

2. The intelligent excess pressure monitoring device of claim 1, wherein, The mounting plate has an annular groove corresponding to the sealing cover. Both sides of the inner wall of the annular groove have sealing grooves, and a sealing ring is installed in the sealing groove.

3. The intelligent excess pressure monitoring device of claim 1, wherein, The opening and closing cover control mechanism includes a rotating base, a connecting plate, and a control motor; The rotary table is fixedly mounted on the mounting plate; One end of the connecting plate is fixedly connected to the sealing cover, and the other end of the connecting plate is rotatably connected to the rotating base via a rotating shaft, which is connected to the control motor.

4. The intelligent excess pressure monitoring device of claim 3, wherein, The control motor is a micro servo motor or a micro stepper motor with electromagnetic braking function.

5. The intelligent excess pressure monitoring device of claim 1, wherein, It also includes a temperature sensor, which is mounted on the mounting plate and electrically connected to the microcontroller.

6. The intelligent excess pressure monitoring device of claim 1, wherein, It also includes a timer, which is electrically connected to the microcontroller.

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