Industrial plant safety intelligent connection panoramic monitoring and early warning device

Abstract

The utility model belongs to the technical field of monitoring and early warning, and particularly relates to an industrial factory building safety intelligent connection panoramic monitoring and early warning device which comprises an MCU microcontroller, an infrared temperature sensor, a signal processing module and an alarm module. The infrared temperature sensor is connected with the MCU microcontroller through the signal processing module; the microcontroller is connected with the alarm module; the signal processing module comprises a signal amplifying circuit and a signal filtering circuit; the signal amplification circuit comprises a signal amplification chip; the slide rheostat is connected between the-Rg pin and the + Rg pin of the signal amplification chip, so that the amplification factor of the signal amplification circuit can be changed by adjusting the resistance value of the slide rheostat, the detection sensitivity is improved, detection and amplification of small voltage are facilitated, and when a fire disaster is in the bud, the fire disaster can be prevented from being damaged. Therefore, the fire hazard can be predicted as early as possible.

Description

Technical Field

[0001] This utility model belongs to the field of monitoring and early warning technology, specifically relating to an intelligent panoramic monitoring and early warning device for industrial plant safety. Background Technology

[0002] Industrial enterprises are characterized by high technological complexity and high value concentration, making factory safety a crucial factor in their production. Fire risk is a significant contributor to factory insecurity.

[0003] To address factory fires, some countermeasures have been implemented, such as using infrared temperature sensors to collect factory temperature data and generate an output voltage signal. This signal is then amplified by a signal amplifier circuit, filtered, and sent to a microcontroller. The microcontroller determines the presence of fire risk based on the received voltage and activates an alarm if one is detected. However, the current signal amplification circuits have low sensitivity to small output voltage signals, making it difficult to accurately detect fires in their early stages and thus hindering early fire prediction. Summary of the Invention

[0004] To address the technical problems mentioned above, this utility model provides an intelligent panoramic monitoring and early warning device for industrial plant safety, which helps improve the sensitivity of acquiring small voltage signals output by infrared temperature sensors, thereby enabling early prediction of fires.

[0005] To achieve the above technical solution, this utility model provides an intelligent panoramic monitoring and early warning device for industrial plant safety, including: an MCU microcontroller, an infrared temperature sensor, a signal amplification circuit, a signal filtering circuit, and an alarm module;

[0006] The infrared temperature sensor is connected to the MCU microcontroller via a signal processing module; the microcontroller is connected to the alarm module.

[0007] The signal processing module includes: a signal amplification circuit and a signal filtering circuit;

[0008] The signal amplification circuit includes: a signal amplification chip U1, which uses an AD623 amplifier; the IN- pin of the signal amplification chip U1 is connected to the second detection point 2 of the infrared temperature sensor; the -Rg pin of the signal amplification chip U1 is connected to the fixed end of the first sliding rheostat R1; the +Rg pin of the signal amplification chip U1 is connected to the sliding end of the first sliding rheostat R1; the IN+ pin of the signal amplification chip U1 is connected to the first detection point 1 of the infrared temperature sensor; and the +VS pin of the signal amplification chip U1 is connected to the first power supply VCC1 and is... The first end of the second resistor R2 is connected; the second end of the second resistor R2 is connected to the first end of the third resistor R3, the negative terminal of the Zener diode D1, the control terminal of the Zener diode D1, and the first end of the first capacitor C1; the second end of the first capacitor C1 is connected to the positive terminal of the Zener diode D1 and the sliding end of the fourth sliding rheostat R4, and the sliding end of the fourth sliding rheostat R4 is also grounded; the fixed end of the fourth sliding rheostat R4 is connected to the second end of the third resistor R3 and the REF pin of the signal amplifier chip U1, and the OUT pin of the signal amplifier chip U1 is connected to the signal filtering circuit.

[0009] Furthermore, the signal filtering circuit includes:

[0010] The second capacitor C2 and the sixth resistor R6; the first end of the second capacitor C2 and the first end of the sixth resistor R6 are connected to the OUT pin of the signal amplifier chip U1; the second end of the second capacitor C2 is connected to the positive input terminal of the filter chip U2; the second end of the sixth resistor R6 is grounded through the third capacitor C3 and connected to the negative input terminal of the filter chip U2; the output terminal of the filter chip U2 is connected to the integrator circuit.

[0011] Furthermore, an integration circuit is also provided between the signal filtering circuit and the MCU microcontroller.

[0012] Furthermore, the integrating circuit includes: a seventh resistor R7, the first end of which is connected to the output of the signal filtering circuit; the second end of the seventh resistor R7 is connected to the negative input of the integrating chip U3 and the fixed end of the ninth sliding rheostat R9; the positive input of the integrating chip U3 is grounded through an eighth sliding rheostat; the sliding end of the ninth sliding rheostat R9 is connected to the output of the integrating chip U3, and the output of the integrating chip U3 is connected to an I / O port of the MCU microcontroller.

[0013] Furthermore, the device also includes a GPRS communication module, an RS485 communication module, and a monitoring and management module; the GPRS communication module is connected to the microcontroller; the microcontroller is connected to the monitoring and management module through the RS485 communication module to monitor and manage the acquired signals.

[0014] Furthermore, the MCU microcontroller adopts an STM32 series microcontroller.

[0015] The beneficial effects of this utility model are:

[0016] (1) By connecting a sliding rheostat between the -Rg pin and the +Rg pin of the signal amplification chip U1, the amplification factor of the signal amplification circuit can be changed by adjusting the resistance value of the sliding rheostat, thereby improving the detection sensitivity. This helps to detect and amplify small voltages, so that fires can be accurately detected when they are in the bud, and thus fires can be predicted as early as possible.

[0017] (2) This utility model adds an integration circuit between the filter circuit and the MCU microcontroller, which helps to smooth the waveform of the input signal, remove high-frequency noise and interference, and thus obtain a more stable output signal, further improving the accuracy of the warning.

[0018] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is an electrical schematic diagram of an industrial plant safety intelligent panoramic monitoring and early warning device according to one embodiment;

[0021] Figure 2 This is a circuit diagram of the signal processing module of an intelligent panoramic monitoring and early warning device for industrial plant safety, as shown in one embodiment.

[0022] 1-MCU microcontroller; 2-infrared temperature sensor; 3-signal processing module; 4-alarm module; 3-1 signal amplification circuit; 3-2 signal filtering circuit; 3-3 integration circuit. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, each technical and scientific term used in this embodiment has the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.

[0027] In this utility model, terms such as "fixed connection," "connected," and "joined" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For researchers or maintenance personnel in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0028] Example 1:

[0029] This embodiment provides an intelligent panoramic monitoring and early warning device for industrial plant safety, such as... Figure 1 As shown, it includes: MCU microcontroller 1, infrared temperature sensor 2, signal processing module 3, and alarm module 4.

[0030] The signal processing module 3 includes: a signal amplification circuit 3-1, a signal filtering circuit 3-2, and an integration circuit 3-3.

[0031] The infrared temperature sensor is connected to the MCU microcontroller via a signal processing module. The voltage signal output by the infrared temperature sensor is amplified, filtered, and integrated before being sent to the MCU microcontroller. The microcontroller is connected to the alarm module to control the alarm module to trigger an alarm.

[0032] Among them, the infrared temperature sensor 2 adopts a thermopile type infrared temperature sensor based on the thermoelectric effect. When there is a temperature difference between two different points, a voltage signal will be output. The infrared temperature sensor includes two detection points, namely the first detection point and the second detection point.

[0033] The signal amplification circuit includes: a signal amplification chip U1, which uses an AD623 amplifier; the IN- pin of the signal amplification chip U1 is connected to the second detection point of the infrared temperature sensor; the -Rg pin of the signal amplification chip U1 is connected to the fixed end of the first sliding rheostat R1; the +Rg pin of the signal amplification chip U1 is connected to the sliding end of the first sliding rheostat R1; the IN+ pin of the signal amplification chip U1 is connected to the first detection point of the infrared temperature sensor; the +VS pin of the signal amplification chip U1 is connected to the first power supply VCC1 and is connected to the second... The first end of resistor R2 is connected to the first terminal of the second resistor R2; the second end of the second resistor R2 is connected to the first end of the third resistor R3, the negative terminal of Zener diode D1, the control terminal of Zener diode D1, and the first end of the first capacitor C1; the second end of the first capacitor C1 is connected to the positive terminal of Zener diode D1 and the sliding terminal of the fourth sliding rheostat R4, and the sliding terminal of the fourth sliding rheostat R4 is also grounded; the fixed end of the fourth sliding rheostat R4 is connected to the second end of the third resistor R3 and the REF pin of the signal amplifier chip U1, and the OUT pin of the signal amplifier chip U1 is connected to the signal filtering circuit.

[0034] The signal filtering circuit includes: a second capacitor C2 and a sixth resistor R6; the first end of the second capacitor C2 and the first end of the sixth resistor R6 are connected to the OUT pin of the signal amplification chip U1; the second end of the second capacitor C2 is connected to the positive input terminal of the filter chip U2; the second end of the sixth resistor R6 is grounded through the third capacitor C3 and connected to the negative input terminal of the filter chip U2; the output terminal of the filter chip U2 is connected to the integrator circuit.

[0035] The integrating circuit includes: a seventh resistor R7, the first end of which is connected to the output of the filter chip U2; the second end of the seventh resistor R7 is connected to the negative input of the integrating chip U3 and the fixed end of the ninth sliding rheostat R9; the positive input of the integrating chip U3 is grounded through the eighth sliding rheostat; the sliding end of the ninth sliding rheostat R9 is connected to the output of the integrating chip U3, and the output of the integrating chip U3 is connected to an I / O port of the MCU microcontroller.

[0036] This embodiment connects a sliding rheostat between the -Rg and +Rg pins of the signal amplification chip U1. This allows the amplification factor of the signal amplification circuit to be changed by adjusting the resistance of the sliding rheostat, thereby improving the detection sensitivity. This helps to detect and amplify small voltages, enabling accurate detection when a fire is in its early stages, and thus predicting the fire as early as possible.

[0037] In addition, adding an integration circuit between the filtering circuit and the MCU microcontroller helps to smooth the waveform of the input signal, remove high-frequency noise and interference, thereby obtaining a more stable output signal and further improving the accuracy of the warning.

[0038] In another embodiment, the device further includes a GPRS communication module, an RS485 communication module, and a monitoring and management module; the GPRS communication module is connected to the microcontroller; the microcontroller is connected to the monitoring and management module through the RS485 communication module to monitor and manage the acquired signals.

[0039] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, for the terminal embodiments, since they are basically similar to the method embodiments, the description and comparison are simple, and the relevant parts can be referred to the description in the method embodiments.

[0040] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An industrial plant safety intelligent connection panoramic monitoring and early warning device, characterized in that, include: MCU microcontroller, infrared temperature sensor, signal processing module and alarm module; The infrared temperature sensor is connected to the MCU microcontroller via a signal processing module; Connect the microcontroller and the alarm module; The signal processing module includes: a signal amplification circuit and a signal filtering circuit; The signal amplification circuit includes: a signal amplification chip U1, which uses an AD623 amplifier; the IN- pin of the signal amplification chip U1 is connected to the second detection point 2 of the infrared temperature sensor; the -Rg pin of the signal amplification chip U1 is connected to the fixed end of the first sliding rheostat R1; the +Rg pin of the signal amplification chip U1 is connected to the sliding end of the first sliding rheostat R1; the IN+ pin of the signal amplification chip U1 is connected to the first detection point 1 of the infrared temperature sensor; and the +VS pin of the signal amplification chip U1 is connected to the first power supply VCC1 and is... The first end of the second resistor R2 is connected; the second end of the second resistor R2 is connected to the first end of the third resistor R3, the negative terminal of the Zener diode D1, the control terminal of the Zener diode D1, and the first end of the first capacitor C1; the second end of the first capacitor C1 is connected to the positive terminal of the Zener diode D1 and the sliding end of the fourth sliding rheostat R4, and the sliding end of the fourth sliding rheostat R4 is also grounded; the fixed end of the fourth sliding rheostat R4 is connected to the second end of the third resistor R3 and the REF pin of the signal amplifier chip U1, and the OUT pin of the signal amplifier chip U1 is connected to the signal filtering circuit.

2. The industrial plant safety intelligent connection panoramic monitoring and early warning device according to claim 1, characterized in that, The signal filtering circuit includes: The second capacitor C2 and the sixth resistor R6; the first end of the second capacitor C2 and the first end of the sixth resistor R6 are connected to the OUT pin of the signal amplifier chip U1; the second end of the second capacitor C2 is connected to the positive input terminal of the filter chip U2; the second end of the sixth resistor R6 is grounded through the third capacitor C3 and connected to the negative input terminal of the filter chip U2; the output terminal of the filter chip U2 is connected to the integrator circuit. 3.The industrial plant safety intelligent connection panoramic monitoring and early warning device according to claim 1, characterized in that, The signal processing module also includes an integration circuit disposed between the signal filtering circuit and the MCU microcontroller.

4. The industrial plant safety intelligent connection panoramic monitoring and early warning device according to claim 3, characterized in that, The integrating circuit includes: a seventh resistor R7, the first end of which is connected to the output of the signal filtering circuit; the second end of the seventh resistor R7 is connected to the negative input of the integrating chip U3 and the fixed end of the ninth sliding rheostat R9; the positive input of the integrating chip U3 is grounded through an eighth sliding rheostat; the sliding end of the ninth sliding rheostat R9 is connected to the output of the integrating chip U3, and the output of the integrating chip U3 is connected to an I / O port of the MCU microcontroller.

5. The industrial plant safety intelligent connection panoramic monitoring and early warning device according to claim 1, characterized in that, The device also includes a GPRS communication module, an RS485 communication module, and a monitoring and management module; the GPRS communication module is connected to the microcontroller; the microcontroller is connected to the monitoring and management module through the RS485 communication module to monitor and manage the collected signals. 6.The industrial plant safety intelligent connection panoramic monitoring and early warning device according to claim 1, characterized in that, The MCU microcontroller is an STM32 series microcontroller.

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