Water is the most basic and most important element of the global environment. It does not only exist in oceans and rivers. Water exists in various forms in the environment surrounding us, such as groundwater, snow, glaciers, and water vapor in the atmosphere. Therefore, in order for people to coexist with water, it is important to know about “water merged into the environment”. Based on the technology cultivated in water level gauges, Takuwa is working on developing technologies to measure water merged in the environment in various forms.
Our compact water level observation buoy is a water level gauge that can be transported and installed by drone when access to a river channel blocked due to an earthquake or torrential rain is disabled, and once installed, it can measure the water level of the river channel.
The component consists of a buoy equipped with a satellite or mobile communication device, an anchor for mooring the buoy, and a cage equipped with a pressure sensor that is equipped with an underwater communication function. It measures water pressure with a pressure sensor, and sends observation data (time, position, water pressure (converted to water level), air pressure, and power supply voltage data) from the buoy floating on the water surface via Iridium satellite or mobile communication in email format to your computer at specified intervals. You can monitor water level and other observation data using a receiving application dedicated for the buoy (to install the application, you may need to ask for permission from the administrator of the PC).
Our groundwater aeration sound measuring device was developed through joint research and development, using the “groundwater aeration sound exploration method” researched by Yasuyuki Tada, a chief researcher at the Kansai branch of the Forestry and Forest Products Research Institute, a national research and development organization, as the measurement principle.
It listens to the sound of groundwater flow and easily finds a large groundwater flow path* that was undetectable.
There are various sounds underground that are caused by groundwater flowing, friction of gravel, or action of insects. It uses a noise cut filter and sound control to remove various sorts of noises underground and capture only the sound of groundwater flow.
The sound of groundwater flow is loudest near a large flow path, so it is useful for identifying a large groundwater flow path. This product is effective in cases where identifying the location of groundwater flow is the key to solving problems.* Flow path in which groundwater flows collectively
In our multi-purpose sound source detector, the sound source detected by the pickup sensor is signal processed and wirelessly transmitted to a tablet or PC, and the intensity of sound is indicated audibly or visually by voice or display on the liquid crystal.
On the tablet/PC, representative values for the intensity of sound from the sound source at the observation point is calculated and displayed. On it, you can see frequency characteristics obtained through real-time FFT processing and map data at the measurement point.
There are various sounds underground that are caused by friction of gravel or action of insects. It eliminates various sorts of underground noise and capture only the sound of groundwater flow.
The sound of groundwater flow is at its maximum near a large underground flow path, thus it enables you to identify the location of a large underground flow path that was unidentifiable. The detector is effective in cases where identifying the location of groundwater flow is the key to solving problems.
Our laser scanning road condition sensor combines a laser scanning sensor with a radiation thermometer to measure the road surface height, reflected light amount, and road surface temperature and determine the road surface condition (frozen/snowy/wet/dry/slush). It is ideal for road surface condition management and suitable to support timely snow removal activities in heavy snowfall areas.
View a catalogOur laser snow depth measuring device measures the “depth of snow” that falls naturally and covers the ground.
The Japan Meteorological Agency, the Ministry of Land, Infrastructure, Transport and Tourism, and local governments have set up observation stations throughout the country, and they are using data of snow depth to make plans for snow damage and snow removal.
It is installed at a height of about 4 to 8.5 m above the ground, and an infrared laser is irradiated diagonally downward from the sensor onto the snow surface. This device measures snow depth by converting the time it takes for laser light to hit the snow surface, be reflected, and be received by the sensor, into distance.
Conventional ultrasonic sensors use ultrasonic waves that are affected by air temperature and wind, but lasers are not affected by air temperature and wind, thus they can provide stable measurements.
It is a direct observation type of sensor designed to observe the amount of sediment (sedimentation) that has accumulated on the riverbed. It measures the amount of sedimentation using the conductivity of the riverbed sediments and the conductivity of the river water. Its measurement data is output in the form of signals specific to the sensor.
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