CN218332018U

CN218332018U - Ambient air monitoring device

Info

Publication number: CN218332018U
Application number: CN202222273287.8U
Authority: CN
Inventors: 孙天乐; 魏泽鸿; 陈臻琪; 麦有全
Original assignee: Guangdong Shenzhen Ecological Environment Monitoring Center Station Guangdong Dongjiang River Basin Ecological Environment Monitoring Center
Current assignee: Guangdong Shenzhen Ecological Environment Monitoring Center Station Guangdong Dongjiang River Basin Ecological Environment Monitoring Center
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-01-17
Anticipated expiration: 2032-08-29

Abstract

The utility model provides an ambient air monitoring device, which comprises a sensor for monitoring ambient air and a collecting device for collecting output parameters of the sensor; the acquisition device is connected with the monitoring host; the sensor for monitoring ambient air comprises: the system comprises a rain gauge, an air pressure sensor, a temperature sensor and a three-dimensional anemometer; the collection system comprises: the pulse analog quantity acquisition module is connected with the rain gauge; the voltage analog quantity acquisition module is sequentially connected with the air pressure sensor and the temperature sensor; the device also comprises a communication module which transmits the pulse analog quantity acquisition module, the voltage analog quantity acquisition module and the digital signals output by the three-dimensional anemoscope to a monitoring host. The utility model discloses in utilize the collection system to unify the back with the analog signal digitization of sensor output and enter into the monitoring host computer, be fit for rear end data processing.

Description

Ambient air monitoring device

Technical Field

The utility model relates to an ambient air monitoring devices field, especially a high accuracy ambient air monitoring devices of meteorological parameters such as air temperature and humidity, atmospheric pressure, rainfall and wind speed of monitoring environment.

Background

In the field of environmental air monitoring, digital RS-232 protocols are mostly adopted for data acquisition and transmission, existing back-end data processing software and hardware of related enterprises and public institutions are mostly developed, and most instruments and instruments in the market also provide RS-232 protocol data output. However, in a miniaturized meteorological parameter monitoring device such as a simple sensor or a working condition device, an analog quantity output is mostly adopted for reasons such as size and cost, and therefore, conversion processing of signals is required. There is no targeted solution to this, due to differences in the design of various items, the use of equipment, the industry, etc. Most enterprises and institutions are either self-customized to test or purchase one-stop solutions for project contractors based on project needs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ambient air monitoring device adopts unified signal acquisition unit to handle the information acquisition that all sensors detected in the device is unified.

The utility model discloses realize that its technical purpose technical scheme is: an ambient air monitoring device comprises a sensor for monitoring ambient air and an acquisition device for acquiring output parameters of the sensor; the acquisition device is connected with the monitoring host;

the sensor for monitoring ambient air comprises: the system comprises a rain gauge, an air pressure sensor, a temperature sensor and a three-dimensional anemometer;

the collection system comprises: the pulse analog quantity acquisition module is connected with the rain gauge; the voltage analog quantity acquisition module is sequentially connected with the air pressure sensor and the temperature sensor;

the device also comprises a communication module which transmits the pulse analog quantity acquisition module, the voltage analog quantity acquisition module and the digital signals output by the three-dimensional anemoscope to a monitoring host.

Further, in the above ambient air monitoring apparatus: the communication module comprises an RS-485 signal converter arranged at one end of the sensor and an RS-85 and RS-232 interchange module arranged at one end of the monitoring host.

Further, in the above ambient air monitoring apparatus: the acquisition device set up on a circuit board, the circuit board on still be provided with switching power supply, switching power supply provides 5V, 12V, 24V stable DC power supply for all sensors and the acquisition device of monitoring ambient air respectively.

Further, in the above ambient air monitoring apparatus: the pulse analog quantity acquisition module uses two paths of frequency and number counting input modules with the model number of first English 7080B; the voltage analog acquisition module adopts an analog acquisition module with the model number of first English C _4017 +.

Further, in the above ambient air monitoring apparatus: an active conversion module with the model number of first English C-7520 is further arranged on the circuit board to realize signal exchange between RS-232 and RS-485 and 433.

The utility model discloses in utilize the collection system to unify the back with the analog signal digitization of sensor output and enter into the monitoring host computer, be fit for rear end data processing.

The present invention will be described in more detail with reference to the following embodiments.

Drawings

FIG. 1 is a structural diagram of the environmental air monitoring device of the present invention;

figure 2 is the utility model discloses ambient air monitoring devices test terminal structure picture.

Detailed Description

The embodiment is an environmental air monitoring device, which mainly monitors environmental parameters such as rainfall, air pressure, temperature, humidity, wind speed and the like in an environment, wherein the rainfall is measured by a rain gauge, a pulse signal is output by the rainfall, the air pressure is monitored by an air pressure sensor, the temperature and the humidity are monitored by a temperature and humidity sensor, the monitoring of the air pressure sensor and the output of the temperature and humidity sensor are voltage signals which are analog signals, the wind speed is measured by a three-dimensional anemometer, and at present, the output of the three-dimensional anemometer is a digital signal. In this embodiment, ambient air is monitored, the sensors can be installed outdoors in a centralized manner as required, as shown in fig. 1, a detection terminal is arranged outdoors such as on a roof, or a special meteorological terminal is provided, a rain gauge, an air pressure sensor, a temperature and humidity sensor, a three-dimensional anemometer and the like are installed outdoors in a centralized manner, as pulse signals are output by the rain gauge, analog voltage signals are output by the air pressure sensor and the temperature and humidity sensor, an integrated circuit board specially used for collecting output signals of the sensors is required at the detection terminal, a collecting device (collecting board) for collecting output signals of the sensors is arranged on a PCB, the collecting board is shown in fig. 2, and the collecting device comprises a pulse analog quantity collecting module connected with the rain gauge; the voltage analog quantity acquisition module is sequentially connected with the air pressure sensor and the temperature sensor; the pulse analog quantity acquisition module is a conversion module for converting pulse quantity into digital quantity, and the voltage analog quantity acquisition module is a module for digitizing voltage signals. Here, the pulse analog quantity acquisition module and the voltage analog quantity acquisition module (AD conversion module) are TTL signals as the signals output by the three-dimensional anemometer, and since the monitoring host is generally installed indoors and is generally spaced from the acquisition board, the TTL signals are converted into signals of an RS-485 protocol, and an RS-485 driver is used to transmit the TTL signals (digital signals) to the monitoring host indoors with a balanced signal of plus or minus 24 VDC. Then, the indoor signal conversion between RS-485 and RS-232 is adopted to be connected into the monitoring host, and the signal is processed in the monitoring host.

In this embodiment, a power supply is further unified on the collecting board PCB, and a mains supply is used as a power supply to perform power supply conversion on 220VAC to form several types of voltage-stabilized dc power outputs of ± 24VDC, +/-12 VDC, 5VDC, etc., and the rain gauge and the three-dimensional anemometer provide a 24VDC power supply, the air pressure sensor provides a 12VDC power supply, the temperature and humidity sensor provides a 5V power supply, and the pulse analog quantity collecting module, the voltage analog quantity collecting module (AD conversion module), etc. on the collecting board provide ± 24VDC power, a ± 12VDC power supply, a 5V power supply, etc. as shown in fig. 2.

Utilize present host computer to build ambient air monitoring devices in this embodiment, utilize outdoor a relatively spacious place installation monitoring ambient air's sensor to include: the rain gauge, the air pressure sensor, the temperature sensor and the three-dimensional anemograph are designed into a circuit board, a switching power supply is arranged on the circuit board, the switching power supply converts commercial power into stable direct current output comprising 5VDC, 12VDC and 24VDC voltage-stabilized output and supplies the stable direct current output to each sensor for monitoring ambient air, and the pulse analog quantity acquisition module uses two commercially available frequency-counting and counting input modules with the model number of first English 7080B; in the embodiment, because the data acquisition modules output 24V balanced signals and a computer in a machine room only has an RS-232 interface, the voltage analog acquisition module also has a module which is sold as an active conversion module of the first English C-7520 and realizes signal exchange between RS-232, RS-485 and RS 433.

Claims

1. An ambient air monitoring device comprises a sensor for monitoring ambient air and an acquisition device for acquiring output parameters of the sensor; the acquisition device is connected with the monitoring host; the method is characterized in that:

the collection system includes: the pulse analog quantity acquisition module is connected with the rain gauge; the voltage analog quantity acquisition module is sequentially connected with the air pressure sensor and the temperature sensor; the pulse analog quantity acquisition module is a conversion module for converting pulse quantity into digital quantity, and the voltage analog quantity acquisition module is a module for digitizing voltage signals;

the monitoring system also comprises a communication module which transmits the pulse analog quantity acquisition module, the voltage analog quantity acquisition module and the digital signals output by the three-dimensional anemoscope to the monitoring host.

2. The ambient air monitoring device of claim 1, wherein: the communication module comprises an RS-485 signal converter arranged at one end of the sensor and an RS-85 and RS-232 interchange module arranged at one end of the monitoring host.

3. The ambient air monitoring device of claim 1, wherein: the acquisition device set up on a circuit board, the circuit board on still be provided with switching power supply, switching power supply provides 5V, 12V, 24V stable DC power supply for all sensors and the acquisition device of monitoring ambient air respectively.

4. The ambient air monitoring device of claim 3, wherein: the pulse analog quantity acquisition module uses two paths of frequency and number counting input modules with the model number of first English 7080B; the voltage analog quantity acquisition module adopts an analog quantity acquisition module with the model number of first English C _4017 +.

5. The ambient air monitoring device of claim 4, wherein: an active conversion module with the model number of first English C-7520 is further arranged on the circuit board to realize signal exchange between RS-232 and RS-485 and 433.