Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Yuuji Terashima

Takeshi Fujiyama

Kazuhiro Yanagi

Keiji Hirata

Takashi Haruguchi

Hisahiro Tanaka

Yutaka Miyazono

Tadashi Shiraishi

Syogo Horinouchi

Seiji Kimura

Naomi Shirai

Kazumi Ootubo

A first beam source radiates, as a reference beam, 905 nm of near infrared beam having a characteristic in which light tends not to be absorbed in water toward a leaf of a plant. A second beam source radiates, as a measuring beam, 1550 nm of near infrared beam having a characteristic in which light tends to be absorbed in water toward the leaf of the plant. A threshold level setter/water content index detector calculates a water content index of one leaf which is a total sum &#x3a3; Ln (I/I) of the reflection intensity ratio. A controller displays a graph representing the time-serial change of the water content contained in the plant from the start to the end of the measurement period on a UI screen of a monitor. Further, the controller is connected to an environmental control device that controls environmental conditions surrounding the plant, and instructs the control device to change or maintain the environmental conditions based on a change of increase and decrease in the water content contained in the calculated plant.

Device for observing water content, method for observing water content, and cultivation device

First beam source radiates a near infrared reference beam of 905 nm, in which light tends not to be absorbed in water toward a leaf of a plant. Second beam source radiates a near infrared measuring beam of 1550 nm, in which light tends to be absorbed in water toward the leaf of the plant. Threshold level setter/water content index detector calculates a water content index of one leaf as a total sum &#x3a3; Ln(I/I) of the reflection intensity ratio. Controller displays a graph representing a total sum of water content of the leaf and a pixel average value as a time-transition of the water content contained in the plant from the start of the measurement period on a UI screen of a monitor. Viewed from the first and second beam sources, a white reference substrate covering a back surface of the leaf is disposed on the leaf of the plant.

Moisture content observation device, moisture content observation method, and cultivation device

A threshold level setter/water content index detector calculates an &#x3a3; Ln (I/I) which is a total sum of the reflection intensity ratio as a water content index of one leaf. A controller displays a graph representing the time-transition of the water content contained in the leaf of the plant from the start to the end of the measurement period on a UI screen of monitor. The controller fixedly determines and sets, as a leaf, a set of reflection positions where the water content for each reflection position which is calculated at the start of the measurement period exceeds a threshold level. When viewed from first beam source and second beam source, white reference substrate which covers a back surface of the leaf of the plant is disposed on the leaf of the plant.

Moisture content observation device, moisture content observation method, and cultivating device

A water content evaluation apparatus which evaluates water content of a part of an object is provided. A water content at each of irradiation positions of the part of the object is calculated based on a first reflection light of a laser reference beam, having a first wavelength that is not absorbed by water, that is reflected at all the irradiation positions of the object and a second reflection light of a laser measuring beam, having a second wavelength that is absorbed by water, that is reflected at all the irradiation positions of the object. Irradiation positions of the object in which the water content is equal to or larger than at least one predetermined threshold level are output.

Water content of a part of object evaluation method and water content of a part of object evaluation apparatus

A true leaf and a plurality of artificial leaves are attached on a white reference substrate. A first light source radiates a reference beam of 905 nm while sequentially scanning toward the white reference substrate. A second light source radiates a measuring beam of 1550 nm while sequentially scanning toward the white reference substrate. A threshold level setter/water content index detector calculates a relative water content of a true leaf based on the intensity of each reflection light of the reference beam and the measuring beam which are respectively reflected by the true leaf and a plurality of artificial leaves.

Moisture content observation device, moisture content observation method, cultivation device and sample

There is provided a plant stress detection apparatus including a first light source that radiates a reference beam of a first wavelength that has a characteristic of tending not to be absorbed in water toward a plant by optical scanning, a second light source that radiates a measuring beam of a second wavelength that has a characteristic of tending to be absorbed in water toward the plant by optical scanning, and a detector that detects presence or absence of water or undulation of the plant based on reflection light of the reference beam that is reflected at an irradiation position of the plant that has a first irradiation area and reflection light of the measuring beam that is reflected at an irradiation position of the plant that has a second irradiation area that is different from the first irradiation area.

Device for detecting plant stress and method for detecting plant stress

A water content evaluation apparatus which evaluates water content of a part of a plant is provided. A water content at each of irradiation positions of the part of the plant is calculated based on a first reflection light of a laser reference beam, having a first wavelength that is not absorbed by water, that is reflected at all the irradiation positions of the plant and a second reflection light of a laser measuring beam, having a second wavelength that is absorbed by water, that is reflected at all the irradiation positions of the plant. Irradiation positions of the plant in which the water content is equal to or larger than at least one predetermined threshold level are displayed, in at least one corresponding predetermined color.

Water content of a part of plant evaluation method and water content of a part of plant evaluation apparatus

In a water content evaluation method, when water content of a part of a plant is evaluated, a white reference substrate (background material) is disposed so as to cover a back surface of a leaf of plant. A first beam source radiates a near infrared beam (reference beam) with a wavelength of 905 nm that has a characteristic of tending not to be absorbed in water toward leaf. A second beam source radiates a near infrared beam (measuring beam) with a wavelength of 1550 nm that has a characteristic of tending to be absorbed in water toward the leaf. Threshold level setter/water content index detector calculates a water content index of one leaf that is total sum &#x3a3; Ln (I905/I1550) of the reflection intensity rate at all irradiation positions of the leaf based on a reflection light of a reference beam and a reflection light of a measuring beam that are reflected on all irradiation positions of the leaf.

A substance detection sensor includes a first light source, a second light source, and a substance detector. The first light source irradiates a detection area including a plurality of target areas with reference light having a first wavelength through surface irradiation using optical scanning. The second light source irradiates the detection area with first measuring light having a second wavelength different from the first wavelength through the surface irradiation using the optical scanning. The substance detector detects a specific substance in the detection area based on reflection light of the reference light from the first light source and reflection light of the first measuring light from the second light source.

Substance detection sensor, substance detecting method, and substance detection system having dual light source with optical scanning

A detection camera includes an imaging optical unit and a light receiving unit that acquire image data, a first detection processing unit that detects a specified substance, a second detection processing unit that acquires distance information from the imaging optical unit to the specified substance, and a display control unit that outputs display data in which information regarding the specified substance is combined with the image data in a case where the distance information is in a detection target distance range.

Image output apparatus, image output method, and image output system

A dot matrix printer of a dispersion printing type in which a printing noise is suppressed and dots arranged in longitudinal rows are driven while shifting the timing for every print wire dot. The present dot matrix printer is characterized by a construction in which respective print wires are driven at different timings within one pitch, and a space around a print head is surrounded by a housing and a platen, and a sound generated in the space is transmitted outside through walls. Further, the present dot matrix printer is characterized in that there is provided a memory storing printing intervals among the whole dots and print head conduction time, and the print head is driven in accordance with information read out of said memory in order to correct deviation of dot rows arranged in a longitudinal direction of the print head from perpendicularity. According to the present dot matrix printer, since the print head is driven at a high frequency by an inexpensive control unit, the noise frequency at printing with the print head becomes high, and the generated noise is transmitted outside through walls. Therefore, attenuation in a high-pitched tone compass is large through walls, thus exhibiting an effect that the operation sound of the printer leaking outside is made smaller.

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Fukuoka, Japan

Yuuji Terashima