Pressure centralized control system special for Internet of Things and having multipath output

Abstract

The utility model relates to a multi-output pressure centralized control system special for the Internet of Things, which is applied to the technical field of fire protection of the Internet of Things, and comprises the following steps: acquiring pipe network pressure data of a fire protection pipe network measuring node through a pressure sensor, and outputting a switching value signal to a fire pump control module through a processor to realize linkage pump starting of a fire pump; meanwhile, the processor also outputs an analog quantity signal to the display module, and a pipe network pressure value is displayed through the display module, so that the real-time pressure data of the pipe network is acquired and uploaded; compared with a traditional pressure switch, the pressure switch not only meets switching value signal output of traditional equipment, but also has analog quantity signal output, and is more suitable for use of an Internet of Things fire fighting system.

Description

Technical Field

[0001] This utility model relates to the field of Internet of Things (IoT) fire protection technology, specifically to an IoT-specific pressure control system with multiple outputs. Background Technology

[0002] Existing fire pipeline pressure switches typically only output digital signals, lacking analog signal output. This digital signal output means that when the pressure switch only outputs a digital signal, it can only provide a simple on / off signal indicating that the pressure is above or below a certain set value, without providing a specific pressure value. In other words, it cannot acquire a precise pressure value, which limits the system's accurate control and regulation capabilities. Furthermore, due to the lack of an analog signal, the control system cannot fine-tune according to pressure changes and can only perform simple on / off operations. This leads to poor control performance in systems requiring high-precision control, such as fire protection systems, affecting the system's stability and reliability. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a dedicated pressure control system for the Internet of Things with multiple outputs, so as to solve the problem in the prior art that pressure switches only have switch signal outputs and no analog signal outputs, which makes it impossible to realize signal acquisition and display, and impossible to realize precise control of the system.

[0004] This utility model provides a dedicated pressure control system for the Internet of Things with multiple outputs, the system comprising:

[0005] Pressure sensor: Used to acquire pipeline pressure data at the measurement nodes of the fire protection pipeline network and send the acquired pipeline pressure data to the processor;

[0006] Processor: Used to receive pipeline pressure data sent by the pressure sensor, and output switch signals to the fire pump control module according to the pipeline pressure data;

[0007] The processor is also used to output an analog signal to the display module after receiving the pipeline pressure data;

[0008] Display module: used to display the pipeline pressure value based on the analog signal output by the processor;

[0009] Fire pump control module: used to start the fire pump according to the switch signal output by the processor.

[0010] Preferably, it further includes:

[0011] A / D conversion module:

[0012] The A / D conversion module is connected to the pressure sensor, the display module, and the processor, respectively.

[0013] The A / D conversion module is used to convert the analog signal output by the pressure sensor into a digital signal and send it to the processor;

[0014] The A / D conversion module is also used to convert the digital output signal sent by the processor into an analog output signal and send it to the display module.

[0015] Preferably, it further includes:

[0016] Alarm module:

[0017] The alarm module is used to generate an alarm based on the switch signal output by the processor.

[0018] Preferably,

[0019] The processor has a preset pressure threshold.

[0020] After receiving the pipeline pressure data, the processor compares the pipeline pressure data with a preset pressure threshold using a built-in comparator.

[0021] When the pipeline pressure data is less than a preset pressure threshold, the processor sends a switch signal to the fire pump control module to start the fire pump.

[0022] Preferably,

[0023] The processor is also used to send a switch signal to the alarm module to activate the alarm module when the pipeline pressure data is less than a preset pressure threshold.

[0024] Preferably,

[0025] The pressure sensor is a ceramic piezoresistive pressure sensor.

[0026] Preferably,

[0027] The processor is used to output a 4-20mA analog signal to the display module.

[0028] The technical solutions provided by the embodiments of this utility model may include the following beneficial effects:

[0029] This application acquires pipeline pressure data from fire protection pipeline measurement nodes using pressure sensors, and outputs a switch signal to the fire pump control module via a processor to achieve coordinated start-up of the fire pump. Simultaneously, the processor also outputs an analog signal to the display module, which displays the pipeline pressure value, enabling real-time acquisition and uploading of pipeline pressure data. Compared to traditional pressure switches, this application not only meets the switch signal output requirements of traditional equipment but also has an analog signal output capability, making it more suitable for use in IoT fire protection systems.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0032] Figure 1 This is an overall system schematic diagram of a dedicated pressure control system for the Internet of Things with multiple outputs, according to an exemplary embodiment.

[0033] Figure 2 This is an electrical wiring diagram illustrated according to another exemplary embodiment;

[0034] Figure 3 This is a schematic diagram of a switch point setting according to another exemplary embodiment;

[0035] In the attached diagram: 1-Pressure sensor, 2-A / D conversion module, 3-Processor, 4-Display module, 5-Alarm module, 6-Fire pump control module. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0037] Example 1

[0038] Figure 1 This is an exemplary embodiment illustrating an overall system diagram of a dedicated IoT pressure control system with multiple outputs, the system comprising:

[0039] Pressure Sensor 1: In this embodiment, the pressure sensor is an imported ceramic piezoresistive pressure sensor used to acquire pipeline pressure data at the measurement nodes of the fire protection pipeline network. The structure of the ceramic piezoresistive pressure sensor generally consists of a sensing element, a metal electrode, a ceramic film, and a housing. The sensing element is usually made of high-pressure ceramic, which has high mechanical strength and stability and can withstand pressure well. The metal electrode is responsible for converting the physical quantity sensed by the sensing element into an electrical signal, thereby amplifying and processing the signal. The ceramic film is the key part connecting the sensing element and the metal electrode, playing an important role in force transmission and conductivity. The housing is a key component that protects the entire sensor structure, effectively isolating it from environmental interference and preventing foreign substances from affecting the accuracy of the sensor. It also has a high degree of compatibility with fire protection pipelines.

[0040] Processor 3: In this embodiment, processor 3 is used to receive pipeline pressure data sent by pressure sensor 1 and output a switch signal to fire pump control module 6 based on the pipeline pressure data. Specifically, processor 3 presets a pressure threshold, which is a low pressure threshold. That is, when the pressure of the fire pipeline drops to this threshold, the pressure inside the fire pipeline is insufficient, and the fire pump needs to be started to increase the pressure inside the pipeline so that the fire-fighting device can work normally. After receiving the real-time pipeline pressure data sent by pressure sensor 1, processor 3 needs to compare the real-time pipeline pressure with the preset pressure value through an internal comparator and output a switch signal based on the comparison result. That is, when the pipeline pressure is less than the preset pressure threshold, processor 3 outputs a switch signal to fire pump control module 6, thereby automatically starting the fire pump when the pressure is low.

[0041] Meanwhile, the processor 3 in this application is also used to receive the digital signal converted by the A / D conversion module 2 (AD unit) and generate a digital output signal after reading it. The digital output signal is then converted into an analog output signal by the A / D conversion module 2 (DA unit) and sent to the display module 4. The display module 4 displays the pipeline pressure value according to the analog output signal, thereby realizing the acquisition and uploading of real-time pipeline pressure data. It should be noted that the analog output signal in this embodiment is an analog output of 4 to 20mA.

[0042] The processor 3 in this application is also connected to an alarm module 5. When the processor 3 compares the real-time pressure data of the pipeline network with the preset pressure threshold, if the pipeline network pressure is less than the preset pressure threshold, the processor 3 will also output a switch signal to the alarm module 5 to control the alarm module 5 to perform a low pressure alarm.

[0043] This embodiment also provides an electrical wiring diagram for a dedicated IoT pressure control system, as shown in the attached diagram. Figure 2As shown, DC24V+ represents the positive pole of the power input, DC24V- represents the negative pole of the power input, mA+ represents the positive pole of the 4-20mA analog output, mA- represents the negative pole of the 4-20mA analog output, 1ON represents the normally open contact of relay 1, 1COM represents the common terminal of relay 1, 1OC represents the normally closed contact of relay 1, 2ON represents the normally open contact of relay 2, 2COM is the common terminal of relay 2, and 2OC represents the normally closed contact of relay 2;

[0044] Before using this system, parameter settings need to be made, mainly the switch point settings, which usually include: Pressure range: This is the maximum and minimum pressure values that the pressure switch can measure and control. It is crucial to select a pressure range suitable for the application requirements to ensure that the switch responds accurately in the expected working environment; Set point: The set point is the pressure threshold that triggers the action of the pressure switch. When the actual pressure reaches or exceeds this set point, the switch will perform corresponding actions, such as opening or closing a circuit. Dead zone: The dead zone is a pressure range near the set point. Within this range, changes in pressure will not trigger the action of the switch. The setting of the dead zone can prevent frequent false actions caused by small fluctuations in pressure; Action mode: The action mode defines the behavior of the switch when the pressure reaches the set point. Common action modes include normally closed (NC) and normally open (NO). In the normally closed mode, when the pressure reaches the set point, the switch will disconnect the circuit; while in the normally open mode, when the pressure reaches the set point, the switch will close the circuit;

[0045] As attached Figure 3 As shown: FILT this value is the display filtering coefficient, AL1H is the closing value of switch 1 (AL1 / SP1), AL1F is the releasing value of switch 1 (AL1 / SP1), AL2H is the closing value of switch 2 (AL2 / SP2), AL2F is the releasing value of switch 2 (AL2 / SP2), END to save and exit; It should be noted that if AL1H > AL1F, then this SP1 is in the upper limit alarm mode. If AL1H < AL1F, then this SP1 is in the lower limit alarm mode. If AL1H = AL1F, then this SP1 is closed, and the hysteresis = Abs(AL1H - AL1F).

[0046] The setting of SP2 is the same as that of SP1;

[0047] The display module 4 of this embodiment also includes a shift key, a set key, and an increase key. In the zero-pressure state, long press the shift key for about 3 - 4 seconds to clear the value. Performing the clear operation again will restore to the factory calibration state, and the default clear value in the factory state is 0.

[0048] This system can be directly installed on the measuring point via the pressure interface. In special situations, such as vibration or high temperature environments, mechanical decoupling can be achieved by connecting the pressure interface via a miniature flexible hose. When connecting the hose, this product can be fixed with an independent mounting bracket.

[0049] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0050] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0051] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0052] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0053] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0054] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0055] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0056] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dedicated pressure control system for the Internet of Things (IoT) with multiple outputs, characterized in that: The system includes: Pressure sensor: Used to acquire pipeline pressure data at the measurement nodes of the fire protection pipeline network and send the acquired pipeline pressure data to the processor; Processor: Used to receive pipeline pressure data sent by the pressure sensor, and output switch signals to the fire pump control module according to the pipeline pressure data; The processor is also used to output an analog signal to the display module after receiving the pipeline pressure data; Display module: used to display the pipeline pressure value based on the analog signal output by the processor; Fire pump control module: used to start the fire pump according to the switch signal output by the processor; Also includes: A / D conversion module: The A / D conversion module is connected to the pressure sensor, the display module, and the processor, respectively. The A / D conversion module is used to convert the analog signal output by the pressure sensor into a digital signal and send it to the processor; The A / D conversion module is also used to convert the digital output signal sent by the processor into an analog output signal and send it to the display module. The processor is used to output a 4-20mA analog signal to the display module.

2. The system according to claim 1, characterized in that, Also includes: Alarm module: The alarm module is used to generate an alarm based on the switch signal output by the processor.

3. The system according to claim 2, characterized in that, The processor has a preset pressure threshold. After receiving the pipeline pressure data, the processor compares the pipeline pressure data with a preset pressure threshold using a built-in comparator. When the pipeline pressure data is less than a preset pressure threshold, the processor sends a switching signal to the fire pump control module to start the fire pump.

4. The system according to claim 3, characterized in that, The processor is also used to send a switch signal to the alarm module to activate the alarm module when the pipeline pressure data is less than a preset pressure threshold.

5. The system according to claim 4, characterized in that, The pressure sensor is a ceramic piezoresistive pressure sensor.

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