Multi-sensor indoor environment monitoring structure

Abstract

The utility model provides a multi-sensor indoor environment monitoring structure, and relates to the technical field of indoor environment monitoring. Comprising a data server, a sensor unit box, a built-in sensor suite and a sampling gas circuit switching box, a difference value detection air pipe type probe arranged on an air supply pipe of an air supply unit and difference value detection room type probes arranged on air exhaust branch pipes connected with an air exhaust main pipe in a plurality of monitoring rooms are internally provided with sensor suites used for monitoring dew point temperature and organic volatile matter of sampling gas coming out of a sampling gas pipe. Counting values of carbon monoxide and particles; according to the utility model, the built-in sensor suite consisting of the dew point temperature sensor, the carbon monoxide sensor, the particle counter, the MOS type TVOC sensor and the PID type TVOC sensor is arranged in the sensor unit box, and sampling gas in a plurality of monitoring rooms is monitored by a group of built-in sensor suite, so that the sensor investment cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of indoor environment monitoring, in particular to a multi-sensor indoor environment monitoring structure. Background Art

[0002] Chemicals and hazardous gases commonly used in laboratories are toxic. Prolonged exposure to these substances can have serious health consequences for laboratory workers. Ventilation systems can promptly remove toxic gases and hazardous substances generated indoors, preventing them from accumulating to harmful concentrations within the laboratory, reducing exposure risks for laboratory workers and ensuring their health and safety.

[0003] Existing indoor environmental monitoring systems for laboratory environments monitor multiple rooms by installing multiple sensors in each room to monitor environmental quality. This approach suffers from high initial sensor installation costs and high overall replacement costs when sensors expire. Therefore, this utility model proposes a multi-sensor indoor environmental monitoring system to address the shortcomings of the existing technology. Utility Model Content

[0004] In response to the above problems, the purpose of the present utility model is to provide a multi-sensor indoor environment monitoring structure. By arranging a built-in sensor kit consisting of a dew point temperature sensor, a carbon monoxide sensor, a particle counter, a MOS type TVOC sensor and a PID type TVOC sensor in the sensor unit box, the sampled gases in multiple monitoring rooms are monitored by a set of built-in sensor kits, avoiding the troubles caused by sensor drift, errors and insufficient air supply quality, and effectively reducing the sensor investment cost.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A multi-sensor indoor environment monitoring structure includes a data server, a sensor unit box, a built-in sensor kit, a sampling air path switching box, a difference detection duct type probe arranged on the air supply pipe of the air supply unit, and a difference detection room type probe respectively arranged on the exhaust branch pipe connected to the exhaust main pipe in multiple monitoring rooms. The sampling air path switching box is provided with two groups. The difference detection duct type probe and the multiple difference detection room type probes are divided into two paths and are respectively connected to the main control units in the two groups of sampling air path switching boxes through cables. The sampling air path switching box is provided with a sampling air path interface, and the sampling air path interface is provided with multiple Sampling air pipe, the sampling ports in the multiple monitoring rooms are evenly divided and connected one-to-one with the multiple sampling air pipes on the two sampling air circuit switching boxes. A built-in sensor kit is provided in the sensor unit box, and the built-in sensor kit is used to monitor the dew point temperature, organic volatiles, carbon monoxide and particle count value of the sampling gas coming out of the sampling air pipe. The sampling air circuit switching box is connected to the sensor unit box through an output air pipe. A vacuum pump is provided on one side of the sensor unit box, and the sensor unit box is connected to the input end of the vacuum pump. The data server is electrically connected to the built-in sensor kit through a cable, and the data server is connected to the user interface device.

[0007] A further improvement is that a temperature sensor is provided on the sampling gas pipe, and the temperature sensor is used to monitor the temperature value of the sampling gas in the sampling gas pipe.

[0008] A further improvement is that the built-in sensor suite includes a dew point temperature sensor, an organic volatile compound sensor, a carbon monoxide sensor and a particle counter.

[0009] A further improvement is that the volatile organic compound sensor includes a MOS type TVOC sensor and a PID type TVOC sensor.

[0010] A further improvement is that the sampling air pipe and the output air pipe are both made of nanomaterials.

[0011] A further improvement is that the data server is connected to a building equipment management system to which the air supply unit and the monitoring room belong. After the data server is connected to the building equipment management system, the air exchange rate of multiple monitoring rooms can be controlled.

[0012] The beneficial effects of the utility model are as follows: the utility model arranges a built-in sensor suite consisting of a dew point temperature sensor, a carbon monoxide sensor, a particle counter, a MOS type TVOC sensor and a PID type TVOC sensor in the sensor unit box, thereby enabling monitoring of the dew point temperature, carbon monoxide content, particle count value and organic volatile compound content of the sampled gas. The sampled gases of multiple monitoring rooms are all monitored by a set of built-in sensor suites, thereby avoiding the troubles caused by sensor drift, error and insufficient air supply quality, and effectively reducing the investment cost of sensors. Moreover, through monitoring of multiple sensors, multiple relevant parameters can be simultaneously incorporated into the variable air volume judgment system, thereby making ventilation control more scientific and effective and ensuring environmental safety.

[0013] The sampling gas circuit switching box of the utility model is provided with two groups, which can send the sampling gas in multiple monitoring rooms into the sensor unit box for monitoring in two ways, avoiding the problem of excessive switching pressure of the sampling gas circuit switching box caused by a single form, and can improve the stability of indoor environment monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main view of the built-in sensor kit structure inside the sensor unit box of the utility model.

[0016] Among them: 1. Data server; 2. Sensor unit box; 3. Sampling gas path switching box; 4. Air supply unit; 401, air supply pipe; 5. Differential detection duct type probe; 6. Exhaust main pipe; 601, exhaust branch pipe; 7. Differential detection room type probe; 8. Sampling gas pipe; 9. Sampling port; 10. Output gas pipe; 11. Vacuum pump; 12. User interface device; 13. Temperature sensor; 14. Dew point temperature sensor; 15. Carbon monoxide sensor; 16. Particle counter; 17. MOS type TVOC sensor; 18. PID type TVOC sensor. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] according to Figure 1-2As shown, this embodiment proposes a multi-sensor indoor environment monitoring structure, including a data server 1, a sensor unit box 2, a built-in sensor kit, a sampling air circuit switching box 3, a difference detection duct type probe 5 arranged on the air supply pipe 401 of the air supply unit 4, and a difference detection room type probe 7 respectively arranged on the exhaust branch pipe 601 connected to the exhaust main pipe 6 in multiple monitoring rooms. The sampling air circuit switching box 3 is provided with two groups. The difference detection duct type probe 5 and the multiple difference detection room type probes 7 are divided into two paths and are respectively connected to the main control units in the two groups of sampling air circuit switching boxes 3 through cables. The difference detection duct type probe 5 of the utility model is used to detect the difference in various parameters between the inspected area and the outdoor fresh air (that is, the difference in various parameters between the gas in the air supply pipe 401 and the outdoor fresh air), and the difference detection room type probe 7 is used to detect the difference in various parameters between the inspected area and the fresh air coming out of the air supply pipe 401. The various parameter differences between the air supply, the sampling air circuit switching box 3 is provided with a sampling air circuit interface, the sampling air circuit interface is provided with multiple, the sampling air circuit interface is provided with a sampling air pipe 8, the sampling ports 9 in the multiple monitoring rooms are evenly divided and connected one-to-one with the multiple sampling air pipes 8 on the two sampling air circuit switching boxes 3, the sensor unit box 2 is provided with a built-in sensor kit, the built-in sensor kit is used to monitor the dew point temperature, organic volatiles, carbon monoxide and particle count value of the sampling gas coming out of the sampling air pipe 8, the sampling air circuit switching box 3 is connected to the sensor unit box 2 through the output air pipe 10, a vacuum pump 11 is provided on one side of the sensor unit box 2, the sensor unit box 2 is connected to the input end of the vacuum pump 11, the data server 1 is electrically connected to the built-in sensor kit through a cable, and the data server 1 is connected to the user interface device 12. The sampling gas collected from the sampling ports 9 of multiple monitoring rooms passes through the sampling gas pipe 8 to the sampling gas path switching box 3. After the sampling gas path switching box 3 switches the detection route, the sampling gas from different monitoring rooms passes through the output gas pipe 10 separately to be monitored by the built-in sensor kit in the sensor unit box 2, and then is discharged from the sensor unit box 2 by the vacuum pump 11. The monitoring results of the built-in sensor kit are transmitted to the data server 1, and the user interface device 12 obtains the monitoring results of the built-in sensor kit by connecting to the data server 1.

[0019] The sampling gas pipe 8 is provided with a temperature sensor 13 , and the temperature sensor 13 is used to monitor the temperature of the sampling gas in the sampling gas pipe 8 .

[0020] The built-in sensor suite includes a dew point temperature sensor 14, a volatile organic compound sensor, a carbon monoxide sensor 15, and a particle counter 16. The dew point temperature sensor 14 measures the temperature at which water vapor in air or other gases begins to condense into liquid water, also known as the dew point temperature. The dew point temperature is a physical quantity that intuitively represents the humidity in the current atmospheric environment. The carbon monoxide sensor 15 is used to detect the carbon monoxide concentration in the sampled gas. The carbon monoxide sensor 15 selectively interacts with carbon monoxide and converts the measured chemical parameter (concentration) into a signal that the transmission system can respond to. The particle counter 16 is an instrument specifically designed to measure the particle size and distribution of airborne dust particles. It primarily counts dust particles based on the principle of light scattering. When dust-laden gas passes through a beam of intense light, the particles emit scattered light. This scattered light is projected through a focusing lens onto a photomultiplier tube, which converts the light pulses into electrical pulses. By measuring the number and intensity of the electrical pulses, the number and size of the particles can be determined.

[0021] The volatile organic compound (VOC) sensors include a MOS (metal oxide semiconductor) sensor 17 and a PID (inertial pressure) TVOC sensor 18. MOS TVOC sensors are air quality sensors based on micromachining technology and a metal oxide semiconductor process. They are specifically designed to detect the concentration of volatile organic compounds (VOCs) in the air. When organic compounds in the sampled gas come into contact with the sensor, a chemical reaction occurs on the sensor surface, causing a change in resistance. This change in resistance is proportional to the concentration of TVOCs in the air, enabling accurate detection of TVOC concentration. The PID TVOC sensor is a sensor specifically designed for detecting volatile organic compounds (TVOCs). It operates based on the principle of photoionization detection (PID). PID sensors use ultraviolet (UV) light to ionize organic molecules into positive and negative ions (ionization) that can be detected by the detector. The detector captures the positive and negative charges of the ionized gas and converts them into current signals, thereby measuring gas concentration. When the gas to be measured absorbs high-energy UV light, the gas molecules are excited by the UV light and temporarily lose electrons to become positively charged ions. After being detected on the detector electrodes, the gas ions quickly recombine to form the original gas and vapor molecules. The PID sensor can detect gas concentrations as low as ppb (parts per billion) levels. The PID sensor has a fast response time and can quickly detect changes in gas concentration. The PID sensor can detect a variety of volatile organic compounds, including but not limited to alkanes, alkenes, and aromatic hydrocarbons. The PID sensor is a non-destructive detector that does not change the gas molecules to be measured. The gas that has passed PID detection can still be collected for further measurement.

[0022] Both the sampling gas pipe 8 and the output gas pipe 10 are nanomaterial pipes. Due to their microporous structure and high gas permeability, nanomaterial gas sampling pipes can achieve efficient gas transmission. This efficient gas transmission technology improves the efficiency and safety of gas sampling and transmission. Nanomaterials have extremely high specific surface areas, which means that the number of surface atoms increases, resulting in unique surface and interface effects. This enhances the adsorption capacity of nanoparticles for gases, which helps improve the sampling efficiency and accuracy of gas sampling pipes.

[0023] The data server 1 is connected to a building equipment management system to which the air supply unit 4 and the monitoring room belong. After the data server 1 is connected to the building equipment management system, the air exchange rate of multiple monitoring rooms can be controlled.

[0024] The present invention sets a built-in sensor kit consisting of a dew point temperature sensor 14, a carbon monoxide sensor 15, a particle counter 16, a MOS type TVOC sensor 17 and a PID type TVOC sensor 18 in the sensor unit box 2, so as to monitor the dew point temperature, carbon monoxide content, particle count value and organic volatile compound content of the sampled gas. The sampled gases of multiple monitoring rooms are all monitored by a set of built-in sensor kits, which avoids the troubles caused by sensor drift, error and insufficient air supply quality, and can also effectively reduce the sensor investment cost. Moreover, through monitoring of multiple sensors, it is possible to simultaneously incorporate multiple related parameters into the variable air volume judgment system, making the ventilation control more scientific and effective, and ensuring environmental safety. The sampling gas circuit switching box 3 of the present invention is provided with two groups, which can send the sampling gases in multiple monitoring rooms into the sensor unit box 2 for monitoring in two ways, avoiding the problem of excessive switching pressure of the sampling gas circuit switching box 3 caused by a single form, and can improve the stability of indoor environment monitoring.

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-sensor indoor environment monitoring structure, characterized by: The invention comprises a data server (1), a sensor unit box (2), a built-in sensor kit, a sampling gas path switching box (3), a difference detection duct type probe (5) arranged on the air supply pipe (401) of the air supply unit (4), and a difference detection room type probe (7) respectively arranged on the exhaust branch pipe (601) connected to the exhaust main pipe (6) in multiple monitoring rooms, wherein the sampling gas path switching box (3) is provided with two groups, the difference detection duct type probe (5) and the plurality of difference detection room type probes (7) are divided into two groups and respectively connected to the main control units in the two groups of sampling gas path switching boxes (3) through cables, the sampling gas path switching box (3) is provided with a sampling gas path interface, the sampling gas path interface is provided with a plurality of sampling gas pipes (8), and the sampling gas path interface is provided with a plurality of sampling gas pipes (8). The sampling ports (9) in the monitoring room are evenly divided and connected to a plurality of sampling gas pipes (8) on the two sampling gas circuit switching boxes (3) in a one-to-one correspondence. The sensor unit box (2) is provided with a built-in sensor kit, and the built-in sensor kit is used to monitor the dew point temperature, organic volatiles, carbon monoxide and particle count value of the sampling gas coming out of the sampling gas pipe (8). The sampling gas circuit switching box (3) is connected to the sensor unit box (2) through an output gas pipe (10). A vacuum pump (11) is provided on one side of the sensor unit box (2). The sensor unit box (2) is connected to the input end of the vacuum pump (11). The data server (1) is electrically connected to the built-in sensor kit through a cable, and the data server (1) is connected to the user interface device (12).

2. A multi-sensor indoor environment monitoring structure according to claim 1, characterized in that: The sampling gas pipe (8) is provided with a temperature sensor (13), and the temperature sensor (13) is used to monitor the temperature value of the sampling gas in the sampling gas pipe (8).

3. The multi-sensor indoor environment monitoring structure according to claim 1, characterized in that: The built-in sensor kit includes a dew point temperature sensor (14), an organic volatile compound sensor, a carbon monoxide sensor (15), and a particle counter (16).

4. The multi-sensor indoor environment monitoring structure according to claim 3, characterized in that: The volatile organic compound sensor comprises a MOS type TVOC sensor (17) and a PID type TVOC sensor (18).

5. The multi-sensor indoor environment monitoring structure according to claim 1, characterized in that: The sampling air pipe (8) and the output air pipe (10) are both nanomaterial pipes.

6. The multi-sensor indoor environment monitoring structure according to claim 1, characterized in that: The data server (1) is connected to a building equipment management system to which the air supply unit (4) and the monitoring room belong. After the data server (1) is connected to the building equipment management system, the air exchange rate of the plurality of monitoring rooms can be controlled.

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