JP2001251317A - Environment monitoring unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to install a conventional environment monitoring unit to a measurement point having accurate altitude information and to synchronize the measured time of each measurement point with each other for the unit. SOLUTION: The environment monitoring unit is provided with a measurement means (51) that dissolves an external gas transmitted through a porous glass plate into a gas content absorbing liquid flowing through a very small flow path and measures the gas concentration from the concentration of a reactant produced by reacting the gas content dissolved into the gas content absorbing liquid with a specific chemical fluid in real time, a positioning means (54) that obtains position data and time data, an internal clock (53a) that is calibrated by the time data, and a communication means (59) that transmits environment data obtained through the measurement of the measurement means on the basis of the time of the internal clock together with a specific ID code to a center in real time or a storage device (58) that stores the environment data and the time at the measurement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environment monitoring apparatus suitable for measuring environmental data at a large number of observation points.

[0002]

BACKGROUND OF THE INVENTION For example, in order to know the distribution of nitrogen oxides NOx and sulfur oxides SOx in the atmosphere by sampling the air at many points as an observation of air pollution, the measurement points must be placed in accurate mesh positions. Need to be placed.

In some cases, it is required that the time for performing the measurement is synchronized at all the measurement points. For example, in the observation of the spectrum of the sun or the measurement of the intensity of ultraviolet rays, complete synchronization is required at the measurement time at each measurement point. Furthermore,
In some cases, accurate data cannot be obtained unless measurement points are measured not only in a two-dimensional area but also in a three-dimensional space including altitude information.

[0004]

However, in the conventional apparatus, it is difficult to set the measurement point at a location including accurate altitude information, and when the measurement location extends over a global scale. However, it was difficult to synchronize the measurement times at each measurement point.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has an environment monitoring apparatus capable of accurately grasping a measurement point and synchronizing measurements at a plurality of measurement points. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION An environmental monitoring apparatus according to the present invention comprises: measuring means for measuring various environmental data; positioning means for obtaining position data and time data; and an internal clock calibrated by the time data. Communication means for transmitting environmental data obtained by the measurement means based on the time of the internal clock and the time of measurement together with a unique ID code to the center.

The communication means may be replaced by a storage means for storing and storing the measured data together with the time data at the time of the measurement, and the stored measured data is read out later. Alternatively, the information is transmitted to the center at a predetermined timing.

[0008] If the measuring means includes a means capable of real-time measurement as defined in claim 4, the gas concentration can be transmitted in real time as defined in claim 5, and
As described in claim 6, the measurement can be performed continuously, and only the measurement data at the required time can be transmitted.

[0009]

FIG. 1 is a control block diagram showing an embodiment of an environment monitoring device 50 of the present invention. This environment monitoring device 50 is, for example, a mesh of the whole of Japan as shown in FIG. Divided mesh intersection M
Installed in Reference numeral 51 denotes a gas absorption reaction measuring unit, which knows the NOx concentration from the concentration of a product generated by the reaction of the reagent with the NOx in the air blown by the blowing fan 8. Reference numeral 52 denotes a driving unit for driving the blowing fan 2 and a pump described later.

Reference numeral 53 denotes a control unit for centrally controlling the apparatus 50, and has a clock 53a inside. The control unit 5
3 stores an ID code unique to the apparatus 50. 5
Reference numeral 4 denotes a GPS (global positioning system), which is a positioning device. Position data and time data obtained by the GPS 54 are supplied to a control unit 53, and the internal clock is periodically calibrated to an accurate time by the time data. It has become so. 55 is an antenna for GPS5. In addition to the GPS 54, GLONASS and the like developed in Russia can be used as positioning means.

Reference numeral 56 denotes a display unit capable of displaying data measured by the apparatus 50, data measured by the GPS 54, and the like. Reference numeral 57 denotes a panel key for setting and inputting various operation operations such as measurement time to the apparatus 50.
Reference numeral 58 denotes a storage unit that stores data measured by the gas absorption reaction measurement unit 51 together with data on the time and position at the time of the measurement. Reference numeral 59 denotes a communication unit for transmitting the measurement data stored in the storage device 58 to the center 71 in FIG. The communication section 59 is connected to any one of a mobile phone 60, a radio 61 capable of communicating with a communication satellite, or a telephone line or a communication network L. In the case of an operation method in which data stored in the storage device 58 is read later, the center 7 is used.
No communication with 1 is required.

FIG. 2 shows the details of the gas absorption reaction measuring section 51. The analysis cell 1 has a region AR1 (gas component absorption section) on a transparent glass lower strip plate serving as a lower plate.
A plurality of flow paths 7a to 7f are formed at the position, and a single linear flow path 7 is formed downstream thereof. An upper strip plate made of glass is superimposed on the lower strip plate, and a circular plate made of porous glass that allows only gas to pass therethrough is fitted in the area AR1.

The gas component absorbing liquid sent out from the liquid storage container 15 of the liquid supply unit 9 by the pump 16 is guided from the liquid inlet 5 to the above-mentioned flow paths 7a to 7f. While the gas component absorbing liquid flows through these flow paths 7a to 7f, the gas in the air blown by the blowing fan 8 permeates through the porous glass and melts.

The gas component absorbing liquid in which the gas is dissolved is:
In the reaction section AR2 provided in the middle of the linear flow path 7, the pump 1
The chemical solution sent out at 8 is sent from the chemical solution inlet 13 into the linear flow path 7 in the reaction section AR2, and the chemical solution reacts with a specific gas (here, NOx) dissolved in the gas component absorbing liquid. To give the product.

The gas component absorbing liquid containing this product is supplied to a gas analysis section A provided further downstream of the linear flow path 7.
In R3, the laser beam LB emitted from the laser beam irradiating section 19 is irradiated, and the fluorescent light LL generated by the laser irradiation is irradiated.
Is detected by the fluorescence detector 20, and the concentration of NOx contained in the atmosphere is determined from the detected amount.

The analysis cell 1 is 2 cm long, 5 cm wide,
Although it is an ultra-small size of about 1 mm in thickness, it can be measured almost in real time even with a gas having a low concentration, and can be used for a long time because only a small amount of a reagent solution is required. The analysis cell 1 was filed by the present applicant as a "gas analyzer" (Japanese Patent Application No. 2000-006432) in another application, and details thereof are disclosed in the application.

When the present environmental monitoring device 70 is installed at the mesh intersection M, the positioning data from the GPS 54 displayed on the display unit 56 is used.
Can be installed at the exact point. The measurement interval is 5 minutes and 1
When the measurement data for the time is set to be transmitted collectively to the center 71, the measurement is performed every 5 minutes based on the accurate internal clock, and the measurement data is stored in the storage device 58 together with the measurement time at that time. You. Then, for example, at every hour, the stored data for one hour is added to its own ID code and transmitted to the center 71. still,
The transmission timing does not have to be the same time between the devices 50.

Further, since the gas absorption reaction measuring section 51 can obtain measurement data in real time, the measurement data can be transmitted to the center 71 in real time. Only the data can be sampled and transmitted to the center 71.

The center 71 collects data transmitted from each environmental monitoring device 50 for each ID code,
On the monitor 72, for example, the measured concentration at the installation point of the apparatus 70 is displayed as a bar graph diagram 73 attached to a two-dimensional mesh.

The environmental monitoring device 50 described above
Can be configured more compactly than conventional fixed-point observation instruments such as polluted points, so it is highly portable, and is not restricted by equipment installation, so it is advantageous for on-site environmental monitoring and measurement mounted on mobile objects Becomes For example, one environmental monitoring device 50 can be mounted on a car, run along a main trunk line, measured, and the measured data can be stored or transmitted to a center in real time. In addition, the environmental monitoring device 50 is mounted on each of a plurality of vehicles,
By running each car, you can get a wide range of environmental data.

Since the environment monitoring device 50 includes the GPS 5, position data including altitude information can be obtained in real time. Therefore, this device 50 is mounted on an airplane or a helicopter, and carbon dioxide, methane, nitrous oxide
By measuring (N ₂ O), chlorofluorocarbon, etc. at different altitudes, the distribution of gas concentrations in the three-dimensional space 74 can be known as shown in FIG. Can be detected. The use of this apparatus is also effective in analyzing the mechanism of SOx gas inflow from China, which is becoming more serious.

The time data obtained by the GPS 5 has extremely high accuracy (with an error of 1 μsec or less), so that the measurement performed by each device 50 is completely synchronized. It is also suitable for measurement requiring synchronization, such as measurement.

As environmental data other than the gas concentration in the outside world, which is a detection target in the above-described embodiment, multi-point simultaneous measurement can be performed on a global scale for various data such as water pollution, noise, and vibration pollution.

[0024]

As described above, according to the present invention, since the information on the installation location of the environmental monitoring device and the time information at the time of measurement are obtained from the GPS built in the device, the present invention is compactly constructed, so that accurate position information is obtained. And time information can be obtained, which facilitates installation at a target measurement location.
Also, even when this device is installed on a global scale, there is no internal clock error between each device, so the measurements made by each device can be completely synchronized, and measurement of environmental data on a global scale can be performed. Will be possible.

[Brief description of the drawings]

FIG. 1 is a control block diagram of an environment monitoring device showing an embodiment of the present invention.

FIG. 2 is a diagram showing details of a gas absorption reaction measuring unit in FIG. 1;

FIG. 3 is a system diagram showing a form of data collection to a center.

FIG. 4 is a diagram showing a measurement in a wide three-dimensional space;

[Explanation of symbols]

 Reference Signs List 8 blowing fan 50 environment monitoring device 51 gas absorption reaction measuring unit 52 driving unit 53 control unit 53a internal clock 54 GPS 56 display unit 57 panel key 58 storage device 71 center 72 monitor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F073 AA19 AB02 CC01 CC09 CC20 DD02 GG01 5K033 AA09 BA11 CB15 DA01 DA06 DB12 DB14 DB20 EA06 EA07 5K048 AA00 BA35 DB01 DC01 EA11 EB10 EB11 HA01 HA02

Claims (6)

[Claims] 1. A measuring means for measuring various environmental data, a positioning means for obtaining position data and time data, an internal clock calibrated by the time data, and the measuring means based on the time of the internal clock. A communication means for transmitting environmental data obtained by measurement and a time at the time of measurement together with a unique ID code to a center. 2. A measuring means for measuring various environmental data; a positioning means for obtaining position data and time data; an internal clock calibrated by the time data; and the measuring means based on the time of the internal clock. A storage device for storing environmental data obtained by measurement and a time at the time of measurement. 3. The environment monitoring apparatus according to claim 2, further comprising communication means for transmitting the data and the unique ID code stored in the storage device to the center at a predetermined timing. 4. An external gas permeated through the porous glass is dissolved in a gas component absorbing liquid flowing in the microchannel, and the gas component dissolved in the gas component absorbing liquid is reacted with a specific chemical solution to generate a gas. Measuring means for measuring the gas concentration in real time from the concentration of the reactant, positioning means for obtaining position data and time data, an internal clock calibrated by the time data, and the measurement based on the time of the internal clock. Communication means for transmitting environmental data obtained by the means and time at the time of measurement together with a unique ID code to the center, or storage means for storing environmental data and time at the time of measurement. Environmental monitoring equipment. 5. The environment monitoring apparatus according to claim 4, wherein said communication means transmits the measurement data in real time. 6. The environment monitoring apparatus according to claim 4, wherein said communication means transmits measurement data at a predetermined time.