Dai-ichi Seiko Co., Ltd.

Ipex Inc.

Towa Corporation

Kenji Ogata

Shogo Kurogi

Yoshiyuki Watanabe

Akihiko Hosaka

Yoshifumi Ikeda

Yoshihiro Mitsui

Masashi Nishiguchi

Kazuhiro Okada

Satoshi Era

Shinya Sakamoto

Shohei Takeda

Kenji Yamaoka

Yuki Hayata

Hisatoshi Sakamoto

Takeshi Suzuki

Shunsuke Wada

Shohei Ushio

Kenichiro Imamura

Shin Nagaoka

Daisuke Higashi

Keita Matsuoka

Yasukazu Takano

An odor detection device () includes an odor sensor (), environmental information measurement means (), odor information collection means (), difference information acquisition means (), and correction means (). The odor sensor () detects information on an odor emitted from an odor source (). The environmental information measurement means () measures information on an environment, correlated with the amount of water vapor contained in surrounding gas. The difference information acquisition means () acquires the difference amount of water vapor, indicating a difference between information on an environment surrounding the odor sensor () and information on an environment surrounding the odor source (). The correction means () corrects information on an odor, collected by the odor information collection means (), on the basis of difference information acquired by the difference information acquisition means ().

Odor detection device, odor detection method, and program

Each of detection instruments (. . . ) of which the number is enabled to be increased or decreased includes at least one sensitive membrane sensitive to a substance, generates first data representing the result of detection of the substance corresponding to the sensitive membrane, and includes second data in which the result of the detection of the substance corresponding to the sensitive membrane is associated with the membrane information of the sensitive membrane. An information terminal () collects the first data and the second data from each of the detection instruments (. . . ), and compares the first data and the second data, to specify an object to be detected.

Detection system

An information management system () includes an odor sensor () and an information processor (). The odor sensor () senses an odor emitted from a source (T). The information processor () includes a preference information inputter () and a user information acquirer (). The user information acquirer () acquires user information indicating the attribute of a user. The preference information inputter () inputs preference information indicating the preference of the user for the odor sensed by the odor sensor (). A storage () associates odor information indicating the kind of the odor sensed by the odor sensor (), the user information acquired by the user information acquirer (), and the preference information input into the preference information inputter () with each other, and stores the odor information, the user information, and the preference information.

Information management system, information management method, and program

A substance sensor includes sensitive membranes to react with substances included in the odors of a gas in correspondence with the substances, and is configured to detect the reaction values of the sensitive membranes. An odor specifier specifies the odors of the gas on the basis of the reaction values of the sensitive membranes. A reaction value calculator calculates reaction values corresponding to the odors specified by the odor specifier on the basis of the reaction values of the sensitive membranes. A percentage calculator calculates the percentages of the reaction values corresponding to the odors specified by the odor specifier to the total of the reaction values corresponding to the odors. A display displays the percentages of the reaction values corresponding to the odors, calculated by the percentage calculator, so that comparison of the percentages is enabled between the odors specified by the odor specifier.

Odor detection system, odor detection method, and program

A substance detection element is described herein. The substance detection element includes a supporting substrate, a plate-shaped beam, a detection electrode, and a substance adsorption film. The plate-shaped beam is provided with a piezoelectric element. The detection electrodes detects information about the vibration frequency of the beam. The substance adsorption films changes the vibration frequency of the beam by adhesion of a substance. The substance adsorption films and the detection electrodes are respectively provided at the same position on the front and the back of the beam.

Substance detection device with improved efficiency

A through-hole () is disposed in a supporting substrate (). Plate-shaped beams ((A,B)) each includes a piezoelectric element, extends from an edge of the through-hole () toward an opposite edge to close a part of the through-hole (), supports a substance adsorption film to which a constitutive substance to be detected adheres, and has a vibration frequency that is varied due to adhesion of the constitutive substance to the substance adsorption film. Drive electrodes () apply a voltage to the piezoelectric element to vibrate and deform the beams (). Detection electrodes () detect information about the vibration frequencies of the beams ().

Substance detecting element

An actuator includes an arm starting end having a piezoelectric element, a first end of the arm starting end connected to an inner side of a fixed frame, the arm starting end extending in a straight line, along a Y-axis direction through a gap between the fixed frame and a mirror surface, from the first end to beyond a middle point of an outer side of the mirror surface; an arm terminating end including a first end connected to the middle point of the outer side of the mirror surface, the arm terminating end extending parallel to the arm starting end; and an arm relay that connects a second end of the arm starting end to a second end of the arm terminating end, the arm relay being formed in a zigzag.

Movable reflective device

Diaphragms () each include laminated layers including a piezoelectric layer. The diaphragms () are each warped to oscillate due to expansion and contraction of the piezoelectric layer or due to an oscillatory force from the outside. The diaphragms have mutually different resonance frequencies. A casing () has an internal space (C) for accommodating the diaphragms () and a fixing part (D) for fixing a portion of each of the diaphragms (). The casing () transmits oscillations between the diaphragms () and the outside via the fixing part (D).

Vibration device

A fixed frame () is fixed to an external member. An ultrasonic oscillator () is disposed inside the fixed frame () and includes a flexible first substrate and a first piezoelectric element deposited on the first substrate in the form of a thin film. The ultrasonic oscillator () is warped in response to expansion or contraction of the first piezoelectric element and generates ultrasonic waves. Actuator units () include a flexible second substrate coupling the first substrate to the fixed frame () and a second piezoelectric element deposited on the second substrate in the form of a thin film. The actuator units () are warped in response to expansion or contraction of the second piezoelectric element and cause the ultrasonic oscillator () to swing relative to the fixed frame (). The fixed frame (), the first substrate, and the second substrate are composed of the same substrate.

Ultrasonic sensor

An oscillator () for warping to oscillate due to expansion and contraction of a piezoelectric layer, having a tabular shape and including a substrate and the piezoelectric layer layered on the substrate. A casing () has an internal space (C) accommodating the oscillator () and a fixing section (D) fixing the circumferential edge of the oscillator (). The casing () is conductive of oscillations transmitted from the oscillator () via the fixing section (D) to the outside. A signal input unit () receives an audio voltage signal input from a smartphone and applies the signal to the piezoelectric layer. The oscillator () has a main surface (A) having an entire width Wlonger than the entire width of the fixing section (D) in a direction orthogonal to a direction from the fixing section (D) to the center of the oscillator ().

Bone conduction device

A tableting punch or a die includes a base material and a tableting surface layer on the base material. The tableting surface layer includes crystalline yttrium oxide containing nitrogen and a group 4A element.

Tableting punch or die and tableting machine including the same

A piezoelectric driver () includes n piezoelectric layers (A toD) (where n is an integer equal to or greater than 2) that are stacked, with electrode layers (B toD) each interposed between any adjacent piezoelectric layers, and with electrode layers (A andE) further formed underneath the lowermost piezoelectric layer (A) and on top of the uppermost piezoelectric layer (D), and the piezoelectric driver () is bent and displaced in the direction in which the piezoelectric layers are stacked. A signal converter () converts an n-bit digital signal (IS) into n bits of a bit string data signal (BS) comprising of bit data indicating whether a drive voltage to be applied to each of the piezoelectric layers (A toD) via the electrode layers (A toB) is on or off. An output device () outputs, in accordance with values of the individual bits in the bit string data signal (BS) provided through conversion performed by the signal converter (), drive voltages to be applied to the individual piezoelectric layers (A toD).

Speaker system

Actuators (), which are a pair of members, are disposed one on either side of a movable frame () in the X-axis direction, and oscillate the movable frame () about the X axis in relation to a fixed frame () by deformation caused by stretching and contracting of piezoelectric elements. Actuators (), which are a pair of members, are disposed one on either side of a mirror () in the Y-axis direction, and oscillate the mirror () about the Y axis in relation to the movable frame () by deformation caused by stretching and contracting of the piezoelectric elements. The length of each actuator () extending in the Y-axis direction is longer than a distance between an inner side of the fixed frame () to which the actuator () is connected and the middle point of an outer side of the movable frame () in the Y-axis direction.

Movable reflective element and two-dimensional scanning device

An array speaker device (A) includes a vibrator () arranged on one face of a substrate having a uniform thickness, the vibrator being formed of a base material layer (), a first electrode layer (), a piezoelectric element layer (), and a second electrode layer (), each of which has a uniform thickness, and which are layered in the order mentioned on the substrate. A hole through which a sound wave is outputted in the thickness direction of the substrate is provided on the substrate at a position corresponding to the vibrator (), the sound wave being generated by vibration of the vibrator () to which a voltage signal is applied via the first electrode layer () and the second electrode layer (). Scallops (S) made of an indentation and a projection alternating in the thickness direction of the substrate are formed on the inner circumferential wall of the hole.

Speaker device and method for manufacturing speaker device

A mirror with a reflective layer formed thereon is supported within a frame-shaped support by two U-shaped arms. A plate-like arm connects fixation points (Q, Q), and a plate-like arm connects fixation points (Q, Q). A pair of piezoelectric elements (E, E) disposed along a longitudinal axis (L) on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E) disposed along the longitudinal axis (L) on the upper surface of an inside bridge. Similarly, a pair of piezoelectric elements (E, E) disposed on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E) disposed on the upper surface of an inside bridge. When a positive drive signal is applied to the piezoelectric elements (E, E, E, E) and a negative drive signal is applied to the piezoelectric elements (E, E), the mirror is displaced efficiently.

Growing community of inventors

Ogori, Japan

Kenji Ogata