Portable integrated environment intelligent monitoring box system

Abstract

The portable integrated environment intelligent monitoring box system comprises a closed box body formed by an upper cover and a lower shell, a gas inlet and a display module are arranged on a mounting plate at the top of the lower shell, and a gas monitoring module, a dust monitoring module, a data processing module comprising a conversion module and a microprocessor and the like are arranged in the lower shell; according to the gas monitoring module, a gas sensor detects air entering from a gas inlet to obtain gas weak current signals, a first signal conditioning circuit converts the gas weak current signals into voltages, and the voltages are sent into a conversion module to be converted into first digital voltage signals after being amplified and filtered; according to the dust monitoring module, a dust sensor detects air to obtain dust weak current signals, a second signal conditioning circuit converts the dust weak current signals into voltages, and the voltages are sent into a conversion module to be converted into second digital voltage signals after being amplified and filtered; the microprocessor converts the first digital voltage signals and the second digital voltage signals into gas concentration values and dust concentration values respectively, and gives an alarm when any gas concentration value or dust concentration value exceeds a corresponding threshold value.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring equipment technology, and in particular to a portable, integrated device capable of intelligently monitoring toxic and harmful factors in the environment, which can be widely used in various scenarios such as industrial sites, laboratories, and outdoor environments for monitoring toxic and harmful factors. Background Technology

[0002] In the current field of environmental monitoring, the monitoring of toxic and hazardous factors in the environment is of paramount importance. Currently, there are many types of equipment available for monitoring toxic and hazardous factors in the environment. Traditional monitoring equipment is often large in size and typically needs to be fixed in specific locations, such as laboratories or monitoring stations. While these devices offer high monitoring accuracy, they are extremely inaccessible and cannot meet the needs of outdoor mobile monitoring or rapid monitoring of different locations.

[0003] In addition, there are portable monitoring devices, which are relatively small and easy to carry. For example, some portable gas detectors are mainly used to detect a few specific gases, such as carbon monoxide and hydrogen sulfide. These devices are usually simple in structure, generally consisting of a sensor, a display screen, and simple control buttons. After the sensor detects the gas concentration, it transmits the signal to a simple internal processing circuit, and then displays the gas concentration value on the display screen.

[0004] However, these existing portable monitoring devices have significant limitations. The closest solutions are the portable single or limited-gas detectors mentioned above, which can only monitor a limited number of toxic and harmful factors and cannot achieve comprehensive monitoring of multiple factors, such as different gases, dust, temperature, and humidity. Furthermore, these devices lack intelligent analysis and data transmission capabilities; they cannot automatically analyze, store, or remotely transmit the monitored data, requiring manual data recording, which is inefficient. When toxic and harmful factors exceed the standard, they typically only provide simple sound or light alarms, offering limited warning effectiveness. In addition, the battery life of these devices is generally insufficient, requiring frequent charging during long-term outdoor monitoring, affecting the continuity of monitoring work.

[0005] The shortcomings of existing technology are:

[0006] 1. It has limited functionality, only able to monitor a few types of toxic and harmful environmental factors, and cannot achieve comprehensive monitoring of multiple factors, making it difficult to fully understand the environmental situation.

[0007] 2. It lacks intelligent analysis functions and cannot automatically process, analyze, and store the monitored data. It relies on manual recording, which easily leads to data errors and omissions.

[0008] 3. Insufficient data transmission capability prevents real-time remote transmission of monitoring data, hindering centralized management and timely analysis and decision-making.

[0009] 4. The alarm methods are limited, mostly simple sound or light alarms, which may not attract the attention of staff in a timely manner in complex environments, resulting in poor warning effects.

[0010] 5. Poor battery life; frequent charging is required during long-term outdoor monitoring, affecting the continuity and efficiency of monitoring work.

[0011] 6. Although some portable devices are small in size, their structural design is not reasonable enough, their operation is not convenient enough, and they are not easy to quickly carry out monitoring work. Summary of the Invention

[0012] This invention addresses the problems and shortcomings of existing technologies by providing a portable integrated intelligent environmental monitoring box system.

[0013] The present invention solves the above-mentioned technical problems through the following technical solution:

[0014] This invention provides a portable integrated intelligent environmental monitoring box system, characterized in that it includes a sealed box body composed of an upper cover and a lower shell. The mounting plate fixed on the top of the lower shell is provided with an air inlet for connecting an external sampling tube and a display module. The lower shell integrates a gas monitoring module and a dust monitoring module located near the air inlet, as well as a data processing module, a communication module, an alarm module, and a power supply module for powering the system. The gas monitoring module includes a gas sensor and a first signal conditioning circuit. The dust monitoring module includes a dust sensor and a second signal conditioning circuit. The data processing module includes a conversion module and a microprocessor.

[0015] The gas sensor is used to detect oxygen, toxic and harmful gases and volatile gases in the air entering through the air inlet to obtain various gas detection signals, namely weak current signals of each gas. The first signal conditioning circuit is used to convert the weak current signals of each gas into voltage signals and then send the first analog voltage signals obtained after amplification and filtering to the conversion module. The conversion module is used to convert each first analog voltage signal into a corresponding first digital voltage signal.

[0016] The dust sensor is used to detect dust in the air entering through the air inlet to obtain various dust detection signals, namely weak current signals of each dust particle. The second signal conditioning circuit is used to convert each weak current signal of dust particle into a voltage signal and then amplify and filter it to obtain a second analog voltage signal, which is then sent to the conversion module. The conversion module is used to convert each second analog voltage signal into a corresponding second digital voltage signal.

[0017] The microprocessor is used to convert each first digital voltage signal into a corresponding gas concentration value according to a preset calibration curve relating gas voltage signal and gas concentration value. It also converts each second digital voltage signal into a corresponding dust concentration value according to a preset calibration curve relating dust voltage signal and dust concentration value. When any gas concentration value or dust concentration value exceeds a corresponding set threshold, it controls the alarm module to sound an alarm. The microprocessor also displays each gas concentration value and dust concentration value through a display module and reports monitoring data and alarm information through a communication module.

[0018] The positive and progressive effects of this invention are as follows:

[0019] 1. To achieve comprehensive monitoring of various toxic and harmful environmental factors, including monitoring of various gases (such as carbon monoxide, sulfur dioxide, formaldehyde, etc.), dust (such as PM2.5, PM10, etc.), and parameters such as temperature and humidity.

[0020] 2. The integrated intelligent analysis module enables automatic collection, processing, analysis, and storage of monitoring data, reducing manual intervention and improving the accuracy and integrity of the data.

[0021] 3. Added remote data transmission function, which can transmit monitoring data to designated terminal devices or platforms in real time, facilitating centralized management and timely decision-making.

[0022] 4. Adopt an alarm mechanism that combines multiple alarm methods to improve the warning effect of alarms and ensure that staff can detect dangers in a timely manner in complex environments.

[0023] 5. Optimize power supply design to improve the equipment's battery life and ensure smooth operation of long-term outdoor monitoring work.

[0024] 6. Improve the structural design of the equipment to make it easier to operate, and enable it to be quickly deployed and retracted to meet the monitoring needs of different scenarios. Attached Figure Description

[0025] Figure 1-2 This is a schematic diagram of the structure of a portable integrated intelligent environmental monitoring box system according to a preferred embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of a portable integrated intelligent environmental monitoring box system according to a preferred embodiment of the present invention.

[0027] Figure 4 This is a circuit diagram of the O2 signal conditioning sub-circuit of a preferred embodiment of the present invention.

[0028] Figure 5 This is a circuit diagram of the NO signal conditioning sub-circuit of a preferred embodiment of the present invention.

[0029] Figure 6 This is a circuit diagram of the NO2 signal conditioning sub-circuit of a preferred embodiment of the present invention.

[0030] Figure 7 This is a battery management circuit diagram of a preferred embodiment of the present invention.

[0031] Figure 8 The circuit diagram of the alarm module is a preferred embodiment of the present invention.

[0032] Figure 9 This is a wireless radio frequency circuit diagram of a preferred embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] For ease of description, only the parts relevant to the present invention are shown in the accompanying drawings. The terms "first," "second," etc., used in this invention are merely for the convenience of describing the technical solutions of the invention and do not have a specific limiting effect; they are all general references and do not constitute a limitation on the technical solutions of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Terms indicating positional relationships, such as "middle," "horizontal," "vertical," "longitudinal," "front," "rear," "left," "right," "inner," and "outer," are based on the positional relationships shown in the illustrated drawings and do not imply that the components referred to must be presented in the described positional relationships, and do not constitute a limitation on the technical solutions of the present invention.

[0035] like Figure 1-9 As shown, this embodiment of the invention provides a portable integrated intelligent environmental monitoring box system, including a sealed box 100 composed of a lower shell 1 and an upper cover 2. A mounting plate 3 is fixed to the top of the lower shell 1. The mounting plate 3 is provided with an air inlet 4, an air outlet 5, a meteorological interface 6, a noise interface 7, and a charging port 8 for connecting an external sampling tube. A power switch 9, a display module 10, and a printer 11 are also embedded in the mounting plate 3. A gas monitoring module and a dust monitoring module are integrated inside the lower shell 1 near the air inlet 4. The lower shell 1 also integrates a data processing module, a communication module 18, an alarm module 19, and a power supply module 20 for powering the system.

[0036] In this embodiment, the sealed enclosure 100 uses an aluminum alloy frame and ABS patterned plate, resembling a portable suitcase with a weight of less than 3kg for easy carrying. The interior of the enclosure has well-organized partitions for storing various modules and offers excellent shock and moisture resistance, protecting internal components from damage during movement. A dust filter is installed inside the air inlet 4 to prevent dust from entering and affecting sensor accuracy. A cotton-insulating plate is fixed inside the upper cover 2, and the data processing module is installed in the center of the lower shell.

[0037] The enclosure features a sealed structure to isolate the equipment from external salt spray air during storage and operation. When the enclosure is closed, the silicone sealing strip between the upper cover 2 and the lower shell 1 is tightened by the latch 23, achieving a seal inside the enclosure.

[0038] The gas monitoring module includes a gas sensor 12 and a first signal conditioning circuit 13; the dust monitoring module includes a dust sensor 14 and a second signal conditioning circuit 15; and the data processing module includes a conversion module (ADUC7060 conversion module) 16 and a microprocessor 17.

[0039] Among them, the gas sensor 12 is used to detect oxygen, toxic and harmful gases and volatile gases in the air that enters through the external sampling tube and the air inlet 4 to obtain various gas detection signals, namely the weak current signals of each gas. The first signal conditioning circuit 13 is used to convert the weak current signals of each gas into voltage signals and then send the first analog voltage signals obtained after amplification and filtering to the conversion module 16. The conversion module 16 is used to convert each first analog voltage signal into a corresponding first digital voltage signal.

[0040] The dust sensor 14 is used to detect dust in the air that enters through the external sampling tube and the air inlet 4 to obtain various dust detection signals, namely weak current signals of each dust particle. The second signal conditioning circuit 15 is used to convert each weak current signal of dust particle into a voltage signal and then send the second analog voltage signal obtained after amplification and filtering to the conversion module 16. The conversion module 16 is used to convert each second analog voltage signal into a corresponding second digital voltage signal.

[0041] The microprocessor 17 is used to convert each first digital voltage signal into a corresponding gas concentration value according to the preset calibration curve of the relationship between gas voltage signal and gas concentration value corresponding to each first digital voltage signal, and to convert each second digital voltage signal into a corresponding dust concentration value according to the preset calibration curve of the relationship between dust voltage signal and dust concentration value corresponding to each second digital voltage signal. When any gas concentration value or dust concentration value exceeds the corresponding set threshold, the microprocessor 17 controls the alarm module 19 to sound an alarm. The microprocessor 17 also displays each gas concentration value and dust concentration value through the display module 10, and reports monitoring data and alarm information through the communication module 18.

[0042] Specifically, the gas sensor 12 includes an electrochemical sensor and a semiconductor sensor. The electrochemical sensor is used to detect oxygen and toxic or harmful gases in the air and obtain corresponding weak gas current signals. The semiconductor sensor is used to detect volatile gases in the air and obtain corresponding weak gas current signals.

[0043] The first signal conditioning circuit 13 includes an O2 signal conditioning sub-circuit for O2, a toxic and harmful gas signal conditioning sub-circuit for various toxic and harmful gases, and a volatile gas signal conditioning sub-circuit for volatile gases.

[0044] The O2 signal conditioning sub-circuit is used to convert the weak gas current signal from the oxygen electrochemical sensor into a voltage signal, and after amplification and filtering, the obtained O2 analog voltage signal is sent to the conversion module to be converted into an O2 digital voltage signal.

[0045] like Figure 4 As shown, the O2 signal conditioning sub-circuit includes: an operational amplifier U5A forming an electrochemical path together with the sensing electrode and negative electrode of the oxygen electrochemical sensor U9; the positive input terminal of the operational amplifier U5A is connected to the reference voltage Vref through resistor 16; the negative input terminal is electrically connected to the output terminal through resistor R22; the positive power supply pin is connected to the positive voltage 5V (VCC5V) provided by the power supply module; the negative power supply pin is connected to the negative voltage 5V (VCC-5V) provided by the power supply module; and the output terminal of the operational amplifier U5A is electrically connected to the negative electrode of the oxygen electrochemical sensor U9. Amplifier U5B converts the weak gas current signal output from the sensing electrode into a voltage signal, amplifies it, filters it through capacitor C6, and then sends it to the conversion module. The positive input terminal of operational amplifier U5B is connected to the reference voltage Vref through resistor R26, the negative input terminal is electrically connected to the sensing electrode of oxygen electrochemical sensor U9 through resistor R23, the negative input terminal is also electrically connected to the output terminal through parallel resistor R20 and capacitor C6, the positive power supply pin is connected to a positive voltage of 5V, the negative power supply pin is connected to a negative voltage of 5V, and the output terminal VOUT4 of operational amplifier U5B is electrically connected to the conversion module.

[0046] The toxic and harmful gas signal conditioning sub-circuit is used to convert the weak gas current signal from the toxic and harmful gas electrochemical sensor into a voltage signal. After amplification and filtering, the obtained toxic and harmful gas analog voltage signal is sent to the conversion module to be converted into a toxic and harmful gas digital voltage signal.

[0047] The signal conditioning circuits for toxic and harmful gases include NO (nitric oxide) signal conditioning circuits, CO (carbon monoxide) signal conditioning circuits, O3 (ozone) signal conditioning circuits, NO2 (nitrogen dioxide) signal conditioning circuits, SO2 (sulfur dioxide) signal conditioning circuits, and CO2 (carbon dioxide) signal conditioning circuits.

[0048] Among them, such as Figure 5 As shown, the NO signal conditioning sub-circuit includes: an operational amplifier U4A forming an electrochemical path with the sensing electrode and negative electrode of the NO electrochemical sensor U7; the negative input terminal of the operational amplifier U4A is electrically connected to the sensing electrode of the NO electrochemical sensor U7 through resistors R4 and R2; the positive power supply pin is connected to the positive voltage 5V (VCC5V) provided by the power supply module; the negative power supply pin is connected to the negative voltage 5V (VCC-5V) provided by the power supply module; the output terminal is electrically connected to the negative electrode of the NO electrochemical sensor U7; the output terminal is also connected between resistors R4 and R2 through capacitor C2; the positive input terminal of the operational amplifier U4A is grounded through resistor R13 and also through resistor R... 10 is electrically connected to the adjustable terminal of the adjustable resistor R9. The adjustable resistor R9 is connected in parallel with the diode D1, and one end of the parallel connection is connected to a negative voltage of 5V through the resistor R6, and the other end is grounded. The operational amplifier U4B converts the weak gas current signal output by the sensing electrode into a voltage signal, amplifies it, and then filters it through the capacitor C3 before sending it to the conversion module. The positive input terminal of the operational amplifier U4B is grounded through the resistor R15, the negative input terminal is electrically connected to the reference electrode of the NO electrochemical sensor U7 through the resistor R11, the output terminal VOUT3 is electrically connected to the conversion module and connected to the negative input terminal through the parallel resistor R7 and capacitor C3, the positive power supply pin is connected to a positive voltage of 5V, and the negative power supply pin is connected to a negative voltage of 5V.

[0049] The NO electrochemical sensor uses three electrodes: a sensing electrode, a reference electrode, and a negative electrode. Figure 5 In this circuit, due to the unique characteristics of the NO electrochemical sensor, a bias is required. This means the sensing electrode operates at a much higher potential than the reference electrode. A 300mV bias voltage is provided via U4A to ensure no current flows through the reference electrode. A battery cannot be directly connected between the sensing and reference electrodes. This bias voltage must be maintained at all times, even when the instrument is open-circuited; otherwise, restarting the instrument would require a very long startup time. The selected 300mV bias voltage allows the sensor parameters to reach their optimal balance. A positive bias voltage means the sensing electrode potential is higher than the reference electrode potential. Therefore, the circuit uses a dual power supply, powered by +5V and -5V respectively.

[0050] like Figure 6As shown, the NO2 signal conditioning sub-circuit includes: a field-effect transistor Q1 short-circuited between the reference electrode and the sensing electrode to ensure the instrument is ready to operate when the circuit is open; the source (pin 1) of the field-effect transistor Q1 is electrically connected to the sensing electrode of the NO2 electrochemical sensor U6, the drain (pin 3) is electrically connected to the reference electrode of the NO2 electrochemical sensor U6, and the gate (pin 2) is connected to a positive voltage of 5V; an operational amplifier U1A forms an electrochemical path with the sensing electrode and the negative electrode of the NO2 electrochemical sensor U6; the negative input terminal of the operational amplifier U1A is electrically connected to the sensing electrode of the NO2 electrochemical sensor U6 through resistors R3 and R1; the positive power supply pin is connected to a positive voltage of 5V (VCC5V); and the negative power supply pin is connected to a negative voltage. The positive input terminal is grounded through resistor R5, the output terminal is electrically connected to the negative electrode of NO2 electrochemical sensor U6, and the output terminal is also connected between resistors R3 and R1 through capacitor C1. The operational amplifier U1B converts the weak gas current signal output by the sensing electrode into a voltage signal, amplifies it, and then filters it through capacitor C4 before sending it to the conversion module. The positive input terminal of operational amplifier U1B is grounded through resistor R14, the negative input terminal is electrically connected to the reference electrode of NO2 electrochemical sensor U6 through resistor R12, the output terminal VOUT0 is electrically connected to the conversion module and connected to the negative input terminal through parallel resistor R8 and capacitor C4, the positive power supply pin is connected to a positive voltage of 5V, and the negative power supply pin is connected to a negative voltage of 5V.

[0051] The CO signal conditioning circuit and the O3 signal conditioning circuit are the same as the NO signal conditioning circuit, and the SO2 signal conditioning circuit and the CO2 signal conditioning circuit are the same as the NO2 signal conditioning circuit.

[0052] The volatile gas signal conditioning sub-circuit is used to convert the weak gas current signal from the volatile gas electrochemical sensor into a voltage signal. After amplification and filtering, the resulting volatile gas analog voltage signal is sent to the conversion module to be converted into a volatile gas digital voltage signal. The volatile gas signal conditioning sub-circuit includes a TVOC signal conditioning sub-circuit and a formaldehyde signal conditioning sub-circuit, similar to the NO2 signal conditioning sub-circuit.

[0053] The dust sensor 14 includes a laser scattering dust sensor or a beta-ray dust sensor, and the second signal conditioning circuit 15 includes a PM2.5 signal conditioning sub-circuit, a PM10 signal conditioning sub-circuit, and a PM100 signal conditioning sub-circuit, and the same as the NO signal conditioning sub-circuit.

[0054] In addition, the system also includes a meteorological monitoring module and a noise monitoring module. Multiple base screws are installed on the mounting plate 3. The base screws are fixed with nuts. The meteorological monitoring module and the noise monitoring module are fixed on the top of the base bracket. The meteorological monitoring module includes an ultrasonic five-element integrated sensor 21, and the noise monitoring module includes a noise transmitter 22.

[0055] The connector of the ultrasonic five-element integrated sensor 21 is connected to the meteorological interface 6. The ultrasonic five-element integrated sensor 21 is used to detect the wind speed, wind direction, temperature, humidity and atmospheric pressure of the surrounding environment and send them to the conversion module 16 to be converted into digital signals. The connector of the noise transmitter 22 is connected to the noise interface 7. The noise transmitter 22 is used to detect the noise of the surrounding environment and send it to the conversion module 16 to be converted into digital signals. The microprocessor 17 is used to display the wind speed, wind direction, temperature, humidity, atmospheric pressure and noise through the display module 10, and to report the monitored wind speed, wind direction, temperature, humidity, atmospheric pressure and noise through the communication module 18.

[0056] The power module 20 includes a battery management circuit and a rechargeable lithium battery. For example... Figure 7 As shown, the battery management circuit includes an MCP73871 chip, which is used to charge the rechargeable lithium battery through the charging port.

[0057] The power module uses a high-capacity rechargeable lithium battery (e.g., 10000mAh) as its power source, equipped with a high-efficiency battery management circuit, and supports fast charging. A full charge allows for over 12 hours of continuous operation. The power module also features a low-battery alarm function, promptly reminding the user to charge when the battery is low. Furthermore, the device supports external power supply to meet the needs of long-term fixed monitoring.

[0058] In terms of power modules, in addition to lithium batteries, solar charging combined with lithium batteries can also be used to achieve continuous power supply in outdoor environments with sunlight, reducing dependence on external charging.

[0059] like Figure 8 As shown, the alarm module 19 includes an audible alarm circuit, a visual alarm circuit, and a vibration alarm circuit. The audible alarm circuit includes: a blue light-emitting diode D1 and a red light-emitting diode D2. The anode of LED D1 is electrically connected to the microprocessor through resistor R15, and the cathode is connected to a positive voltage of 3V provided by the power supply module. The anode of LED D2 is electrically connected to the microprocessor through resistor R16, and the cathode is connected to a positive voltage of 3V provided by the power supply module. The visual alarm circuit includes: a buzzer B1. The positive terminal of buzzer B1 is grounded through capacitor C12 and also connected to a positive voltage of 3V through resistor R9. The negative terminal of buzzer B1 is electrically connected to the collector of NPN transistor N1. The base of NPN transistor N1 is electrically connected to the microprocessor, and the base is also grounded through resistor R8. The emitter is grounded. The vibration alarm circuit includes: a vibration motor J4. The positive terminal of vibration motor J4 is connected to a positive voltage of 3V through resistor R21. The negative terminal of vibration motor J4 is grounded through capacitor C7 and also connected to the collector of NPN transistor N2. The base of NPN transistor N2 is electrically connected to the microprocessor, and the base is also grounded through resistor R17. The emitter is grounded.

[0060] The alarm module 19 integrates three alarm modes: audible alarm (buzzer with adjustable volume), visual alarm (high-brightness LED light emitting different colors to distinguish different alarm levels), and vibration alarm (built-in vibration motor). When the concentration of toxic or harmful factors detected exceeds a preset threshold, the alarm module 19 is activated under the control of the microprocessor 17, with all three alarm modes operating simultaneously to ensure that staff receive timely warnings. A voice alarm function can be added to the alarm module, providing staff with more intuitive information through preset voice prompts (such as "Carbon monoxide concentration exceeds the standard, please evacuate immediately").

[0061] The communication module 18 includes a GPRS / 4G wireless communication module and a Bluetooth module. The GPRS / 4G wireless communication module is used to transmit processed monitoring data in real time to a remote monitoring platform or terminal device (such as a computer or mobile phone), enabling remote data sharing and management. The Bluetooth module is used for communication between the device and nearby terminal devices, facilitating local data export and device debugging. It also includes a 433MHz wireless self-organizing network (200m transmission distance) built using a CC1101 RF chip, supporting GPRS remote data transmission and enabling real-time synchronization of hazard information and multi-level early warning.

[0062] like Figure 9 As shown, the SCLK, SO, GDO2, GDO0, CSn, and SI pins of the CC1101 RF chip are all electrically connected to the corresponding pins of the microprocessor. The RBIAS pin of the CC1101 RF chip is grounded through resistor R14, and the GND pin is grounded. The DVDD pin of the CC1101 RF chip is grounded through capacitor C12. The DCOUPL pin of the CC1101 RF chip is grounded through capacitor C9 and also connected to a positive voltage of 3V provided by the power supply module. The DGUARD pin of the CC1101 RF chip is grounded through capacitor C2 and also connected to a positive voltage provided by the power supply module. The AVDD pins of the CC1101 RF chip are grounded through capacitors and also connected to the positive voltage of 3V provided by the power supply module. The XOSC_Q1 and XOSC_Q2 pins of the CC1101 RF chip are connected to the crystal oscillator circuit. The RF_P pin of the CC1101 RF chip is grounded through inductor L1 and capacitor C14, and is also connected to the antenna through capacitor C16, inductor L3, inductor L4 and capacitor C17. Inductor L3 is grounded through capacitor C19, and inductor L4 is grounded through capacitor C12. The RF_N pin of the CC1101 RF chip is electrically connected through inductor L2 and inductor L3, and is also grounded through capacitor C29.

[0063] In this embodiment, the sensor's output signal is processed by a signal conditioning circuit to improve the signal's stability and accuracy.

[0064] In this embodiment, the data processing module is based on a high-performance microprocessor 17 (such as an STM32 series microcontroller). It is responsible for receiving signals transmitted from the sensor module, analyzing and processing these signals, and converting them into corresponding monitoring data (such as gas concentration values, dust concentration values, etc.). The microprocessor 17 also has a built-in data storage unit, which can store at least 100,000 monitoring data points for subsequent querying and analysis.

[0065] In this embodiment, the display module 10 uses a high-definition touch screen (e.g., 5 inches) to display various monitoring data, equipment operating status, alarm information, etc. in real time. It is easy to operate, allowing for parameter setting and data querying via touch. Alternatively, besides a touch screen, a combination of a regular display screen and physical buttons can be used for the display module, which is less expensive.

[0066] In this embodiment, the processed monitoring data can be analyzed to determine the pollution level and trend of toxic and harmful factors in the environment. When the data exceeds the preset threshold, an alarm signal is issued through the alarm module. The processed monitoring data is stored in an orderly manner and supports data query and export (which can be exported to Excel format) based on conditions such as time and monitoring location.

[0067] In this embodiment, the operation of the control communication module is used to realize data transmission with remote platforms or near-field terminal devices, ensuring the stability and security of data transmission.

[0068] In this embodiment, a user-friendly interface is provided, allowing staff to perform operations such as powering on / off the device, setting parameters (e.g., alarm thresholds, sampling frequency), and querying data via the display screen.

[0069] In this embodiment, the modules work together through internal circuit connections. The signals collected by the sensor module are transmitted to the data processing module. After processing, the data processing module sends the data to the display module for display. At the same time, the data is stored in the data storage unit and transmitted through the communication module. When the data exceeds the limit, the data processing module triggers the alarm module to work.

[0070] In this embodiment, a portable integrated multi-parameter design is adopted: gas (O2, O3, CO, etc.) and meteorological (wind speed, wind direction, temperature, etc.) monitoring functions are integrated into a single box. Through modular sensor layout and internal circuit integration, the simultaneous monitoring of multiple toxic and harmful environmental factors is realized, solving the problem of existing equipment having scattered functions and requiring multiple devices to cooperate.

[0071] In this embodiment, the structure and materials for resistance to harsh environments are innovative: an aluminum alloy frame + ABS patterned plate box is adopted, the external accessories are wrapped with ethylene-vinyl acetate copolymer, and the inside is filled with EVA sponge. Combined with the sealed design, it meets the requirements of working temperature of -20℃~60℃, humidity of 0~90% RH and salt spray corrosion environment, and improves the adaptability to special scenarios such as islands and reefs.

[0072] In this embodiment, a low-power intelligent power management system is designed with the MCP73871 chip as the core, and a lithium battery (16000mA) charging management circuit is designed to support simultaneous charging and discharging of the AC-DC adapter and the charging interface. With the control of an ultra-low-power STM32 microcontroller, the battery life is ≥12 hours, solving the problem of insufficient battery life of portable devices.

[0073] In this embodiment, the integrated sound, light, electricity, and vibration alarm and wireless networking technology are used: when the monitored parameters exceed the standard, a triple alarm is triggered by a buzzer (sound), red and blue LEDs (light), and a vibration motor (vibration); a 433MHz wireless self-organizing network (transmission distance 200m) is built using the CC1101 RF chip, which supports GPRS remote data transmission to achieve real-time synchronization of danger information and multi-level early warning.

[0074] In this embodiment, a multi-sensor collaborative calibration and data fusion algorithm is implemented. For different types of sensors such as electrochemical, laser, and ultrasonic sensors, a signal conditioning circuit is designed to achieve data filtering, threshold comparison, and fusion analysis through an STM32 chip, ensuring measurement accuracy ≤ ±3% FS and solving the data consistency problem when monitoring multiple parameters.

[0075] In this embodiment, the human-computer interaction and modular expansion structure are as follows: a 7-inch industrial touch screen is provided to realize parameter setting and data visualization, a USB interface and sensor expansion slot are reserved to support firmware upgrades and function expansion (such as adding a gas sensor), taking into account both ease of operation and future upgrade needs.

[0076] This invention is comprehensive in function and can simultaneously monitor multiple toxic and harmful environmental factors, including various gases, dust, temperature, and humidity. Compared with existing single-function monitoring equipment, it can more comprehensively reflect the environmental conditions.

[0077] This invention is highly intelligent, integrating intelligent analysis, automatic storage, and data transmission functions, reducing manual operation and improving the efficiency and reliability of monitoring work.

[0078] This invention provides convenient data transmission, supports both remote wireless transmission and short-range Bluetooth transmission, facilitates centralized management and rapid analysis of monitoring data, and enables timely detection of environmental problems and the implementation of corresponding measures.

[0079] This invention offers diverse alarm methods with excellent warning effects. The simultaneous operation of sound, light, and vibration alarms effectively alerts staff in various complex environments, thereby improving the safety of monitoring work.

[0080] This invention boasts strong battery life, employing a high-capacity lithium battery and an efficient charging management circuit, enabling long continuous working time to meet the needs of extended outdoor monitoring and reducing the impact of charging frequency on operations.

[0081] This invention is highly portable and easy to operate. The box is reasonably designed, lightweight, and easy to carry. The user interface is user-friendly, enabling rapid deployment of monitoring work and adapting to different monitoring scenarios.

[0082] This invention has a large data storage capacity, capable of storing a large amount of historical data, which facilitates the analysis and research of environmental change trends and provides data support for environmental governance.

[0083] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A portable integrated intelligent environmental monitoring box system, characterized in that, The system includes a sealed enclosure consisting of an upper cover and a lower shell. The mounting plate fixed to the top of the lower shell has an air inlet for connecting an external sampling tube and a display module. The lower shell integrates a gas monitoring module and a dust monitoring module located near the air inlet, as well as a data processing module, a communication module, an alarm module, and a power supply module for powering the system. The gas monitoring module includes a gas sensor and a first signal conditioning circuit. The dust monitoring module includes a dust sensor and a second signal conditioning circuit. The data processing module includes a conversion module and a microprocessor. The gas sensor is used to detect oxygen, toxic and harmful gases and volatile gases in the air entering through the air inlet to obtain various gas detection signals, namely weak current signals of each gas. The first signal conditioning circuit is used to convert the weak current signals of each gas into voltage signals and then send the first analog voltage signals obtained after amplification and filtering to the conversion module. The conversion module is used to convert each first analog voltage signal into a corresponding first digital voltage signal. The dust sensor is used to detect dust in the air entering through the air inlet to obtain various dust detection signals, namely weak current signals of each dust particle. The second signal conditioning circuit is used to convert each weak current signal of dust particle into a voltage signal and then amplify and filter it to obtain a second analog voltage signal, which is then sent to the conversion module. The conversion module is used to convert each second analog voltage signal into a corresponding second digital voltage signal. The microprocessor is used to convert each first digital voltage signal into a corresponding gas concentration value according to a preset calibration curve relating gas voltage signal and gas concentration value. It also converts each second digital voltage signal into a corresponding dust concentration value according to a preset calibration curve relating dust voltage signal and dust concentration value. When any gas concentration value or dust concentration value exceeds a corresponding set threshold, it controls the alarm module to sound an alarm. The microprocessor also displays each gas concentration value and dust concentration value through a display module and reports monitoring data and alarm information through a communication module.

2. The portable integrated intelligent environmental monitoring box system as described in claim 1, characterized in that, The gas sensor includes an electrochemical sensor and a semiconductor sensor. The electrochemical sensor is used to detect oxygen and toxic and harmful gases in the air to obtain corresponding weak gas current signals. The semiconductor sensor is used to detect volatile gases in the air to obtain corresponding weak gas current signals. The first signal conditioning circuit includes an O2 signal conditioning sub-circuit for O2, a toxic and harmful gas signal conditioning sub-circuit for various toxic and harmful gases, and a volatile gas signal conditioning sub-circuit for volatile gases. The O2 signal conditioning sub-circuit is used to convert the weak gas current signal from the oxygen electrochemical sensor into a voltage signal, and after amplification and filtering, the obtained O2 analog voltage signal is sent to the conversion module to be converted into an O2 digital voltage signal. The toxic and harmful gas signal conditioning sub-circuit is used to convert the weak gas current signal from the toxic and harmful gas electrochemical sensor into a voltage signal, and after amplification and filtering, the obtained toxic and harmful gas analog voltage signal is sent to the conversion module to be converted into a toxic and harmful gas digital voltage signal. The volatile gas signal conditioning sub-circuit is used to convert the weak gas current signal from the volatile gas electrochemical sensor into a voltage signal, and after amplification and filtering, the obtained volatile gas analog voltage signal is sent to the conversion module to be converted into a volatile gas digital voltage signal.

3. The portable integrated intelligent environmental monitoring box system as described in claim 2, characterized in that, The O2 signal conditioning sub-circuit includes: an operational amplifier U5A forming an electrochemical path together with the sensing electrode and negative electrode of the oxygen electrochemical sensor U9; the positive input terminal of the operational amplifier U5A is connected to the reference voltage Vref through resistor 16, the negative input terminal is electrically connected to the output terminal through resistor R22, the positive power supply pin is connected to the positive voltage 5V provided by the power supply module, and the negative power supply pin is connected to the negative voltage 5V provided by the power supply module; the output terminal of the operational amplifier U5A is electrically connected to the negative electrode of the oxygen electrochemical sensor U9; the operational amplifier U5B converts the weak gas current signal output by the sensing electrode into a voltage signal, amplifies it, filters it through capacitor C6, and sends it to the conversion module; the positive input terminal of the operational amplifier U5B is connected to the reference voltage Vref through resistor R26, the negative input terminal is electrically connected to the sensing electrode of the oxygen electrochemical sensor U9 through resistor R23, the negative input terminal is also electrically connected to the output terminal through a parallel resistor R20 and capacitor C6, the positive power supply pin is connected to the positive voltage 5V, the negative power supply pin is connected to the negative voltage 5V, and the output terminal VOUT4 of the operational amplifier U5B is electrically connected to the conversion module.

4. The portable integrated intelligent environmental monitoring box system as described in claim 2, characterized in that, The toxic and harmful gas signal conditioning sub-circuit includes an NO signal conditioning sub-circuit, a CO signal conditioning sub-circuit, an O3 signal conditioning sub-circuit, an NO2 signal conditioning sub-circuit, an SO2 signal conditioning sub-circuit, and a CO2 signal conditioning sub-circuit. The NO signal conditioning sub-circuit includes: an operational amplifier U4A forming an electrochemical path with the sensing electrode and negative electrode of the NO electrochemical sensor U7; the negative input terminal of the operational amplifier U4A is electrically connected to the sensing electrode of the NO electrochemical sensor U7 through resistors R4 and R2; the positive power supply pin is connected to a positive voltage of 5V provided by the power supply module; the negative power supply pin is connected to a negative voltage of 5V provided by the power supply module; the output terminal is electrically connected to the negative electrode of the NO electrochemical sensor U7; and the output terminal is also connected between resistors R4 and R2 through capacitor C2; the positive input terminal of the operational amplifier U4A is grounded through resistor R13 and is also connected to an adjustable voltage through resistor R10. The adjustable terminal of resistor R9 is electrically connected. The adjustable resistor R9 is connected in parallel with diode D1, and one end of the parallel connection is connected to a negative voltage of 5V through resistor R6, and the other end is grounded. Operational amplifier U4B converts the weak gas current signal output by the sensing electrode into a voltage signal, amplifies it, and then filters it through capacitor C3 before sending it to the conversion module. The positive input terminal of operational amplifier U4B is grounded through resistor R15, the negative input terminal is electrically connected to the reference electrode of NO electrochemical sensor U7 through resistor R11, the output terminal VOUT3 is electrically connected to the conversion module and connected to the negative input terminal through the parallel resistor R7 and capacitor C3, the positive power supply pin is connected to a positive voltage of 5V, and the negative power supply pin is connected to a negative voltage of 5V. The NO2 signal conditioning sub-circuit includes: the source of the field-effect transistor Q1 is electrically connected to the sensing electrode of the NO2 electrochemical sensor U6, the drain is electrically connected to the reference electrode of the NO2 electrochemical sensor U6, and the gate is connected to a positive voltage of 5V; the operational amplifier U1A forms an electrochemical path with the sensing electrode and the negative electrode of the NO2 electrochemical sensor U6; the negative input terminal of the operational amplifier U1A is electrically connected to the sensing electrode of the NO2 electrochemical sensor U6 through resistors R3 and R1; the positive power supply pin is connected to a positive voltage of 5V; the negative power supply pin is connected to a negative voltage of 5V; the positive input terminal is grounded through resistor R5; and the output terminal is connected to the NO2 signal conditioning sub-circuit. The negative electrode of the chemical sensor U6 is electrically connected, and the output terminal is also connected between resistors R3 and R1 through capacitor C1. The operational amplifier U1B converts the weak gas current signal output by the sensing electrode into a voltage signal, amplifies it, and then filters it through capacitor C4 before sending it to the conversion module. The positive input terminal of the operational amplifier U1B is grounded through resistor R14, the negative input terminal is electrically connected to the reference electrode of the NO2 electrochemical sensor U6 through resistor R12, the output terminal VOUT0 is electrically connected to the conversion module and connected to the negative input terminal through parallel resistor R8 and capacitor C4, the positive power supply pin is connected to a positive voltage of 5V, and the negative power supply pin is connected to a negative voltage of 5V. The CO signal conditioning sub-circuit and O3 signal conditioning sub-circuit are the same as the NO signal conditioning sub-circuit, and the SO2 signal conditioning sub-circuit and CO2 signal conditioning sub-circuit are the same as the NO2 signal conditioning sub-circuit; The volatile gas signal conditioning sub-circuit includes a TVOC signal conditioning sub-circuit and a formaldehyde signal conditioning sub-circuit, as well as a NO2 signal conditioning sub-circuit.

5. The portable integrated intelligent environmental monitoring box system as described in claim 4, characterized in that, The dust sensor includes a laser scattering dust sensor or a beta-ray dust sensor, and the second signal conditioning circuit includes a PM2.5 signal conditioning sub-circuit, a PM10 signal conditioning sub-circuit, and a PM100 signal conditioning sub-circuit, as well as a NO signal conditioning sub-circuit.

6. The portable integrated intelligent environmental monitoring box system as described in claim 2, characterized in that, The system also includes a meteorological monitoring module and a noise monitoring module. The mounting plate is also equipped with a meteorological interface and a noise interface. The mounting plate is also equipped with multiple anchor bolts. The anchor bolts are fixed with a base bracket by nuts. The meteorological monitoring module and the noise monitoring module are fixed on the top of the base bracket. The meteorological monitoring module includes an integrated ultrasonic five-element sensor. The connector of the integrated ultrasonic five-element sensor is connected to the meteorological interface. The integrated ultrasonic five-element sensor is used to detect the wind speed, wind direction, temperature, humidity and atmospheric pressure of the environment and send them to the conversion module to be converted into digital signals. The noise monitoring module includes a noise transmitter, the connector of which is connected to a noise interface. The noise transmitter is used to detect the noise in the environment and send it to the conversion module to be converted into a digital signal.

7. The portable integrated intelligent environmental monitoring box system as described in claim 1, characterized in that, The power module includes a battery management circuit and a rechargeable lithium battery, and the mounting plate is also provided with a charging port; The battery management circuit includes an MCP73871 chip, which is used to charge the rechargeable lithium battery through the charging port.

8. The portable integrated intelligent environmental monitoring box system as described in claim 1, characterized in that, The alarm module includes an audible alarm circuit, a visual alarm circuit, and a vibration alarm circuit. The audible alarm circuit includes: a light-emitting diode D1 for emitting blue light and a light-emitting diode D2 for emitting red light. The anode of the light-emitting diode D1 is electrically connected to the microprocessor through a resistor R15, and the cathode is connected to a positive voltage of 3V provided by the power supply module. The anode of the light-emitting diode D2 is electrically connected to the microprocessor through a resistor R16, and the cathode is connected to a positive voltage of 3V provided by the power supply module. The optical alarm circuit includes: a buzzer B1, the positive terminal of which is grounded through capacitor C12 and connected to a positive voltage of 3V through resistor R9; the negative terminal of the buzzer B1 is electrically connected to the collector of NPN transistor N1; the base of NPN transistor N1 is electrically connected to the microprocessor; the base is also grounded through resistor R8; and the emitter is grounded. The vibration alarm circuit includes: a vibration motor J4, the positive terminal of the vibration motor J4 is connected to a positive voltage of 3V through a resistor R21, the negative terminal of the vibration motor J4 is grounded through a capacitor C7 and is also electrically connected to the collector of an NPN transistor N2, the base of the NPN transistor N2 is electrically connected to a microprocessor, the base is also grounded through a resistor R17, and the emitter is grounded.

9. The portable integrated intelligent environmental monitoring box system as described in claim 1, characterized in that, The sealed enclosure uses an aluminum alloy frame and ABS patterned plate. A dustproof net is installed inside the air inlet, and a cotton insulation board is fixed inside the top cover. The data processing module is installed in the center of the lower shell.

10. The portable integrated intelligent environmental monitoring box system as described in claim 1, characterized in that, The communication module includes a GPRS / 4G wireless communication module and a Bluetooth module; This also includes the use of the CC1101 RF chip to build a 433MHz wireless self-organizing network. The SCLK, SO, GDO2, GDO0, CSn, and SI pins of the CC1101 RF chip are all electrically connected to the corresponding pins of the microprocessor. The RBIAS pin of the CC1101 RF chip is grounded through resistor R14, and the GND pin is grounded. The DVDD pin of the CC1101 RF chip is grounded through capacitor C12. The DCOUPL pin of the CC1101 RF chip is grounded through capacitor C9 and also connected to a positive voltage of 3V provided by the power supply module. The DGUARD pin of the CC1101 RF chip is grounded through capacitor C2. The power supply module provides a positive voltage of 3V. The AVDD pins of the CC1101 RF chip are grounded through capacitors. The XOSC_Q1 and XOSC_Q2 pins of the CC1101 RF chip are connected to the crystal oscillator circuit. The RF_P pin of the CC1101 RF chip is grounded through inductor L1 and capacitor C14. It is also connected to the antenna through capacitor C16, inductor L3, inductor L4 and capacitor C17. Inductor L3 is grounded through capacitor C19 and inductor L4 is grounded through capacitor C12. The RF_N pin of the CC1101 RF chip is electrically connected through inductor L2 and inductor L3 and is also grounded through capacitor C29.

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