摘要:
The present invention provides a control system including: plural wireless measuring units, each of which, when receiving a radio signal, uses the signal as an energy source to measure a physical quantity, and generates and sends a radio signal having an attribute reflecting the measured physical quantity; a transmitter; a receiver; a storage unit which stores position data of the wireless measuring units in accordance with their identification data; a calculation unit which calculates physical quantities based on the received radio signals; a recognition unit which recognizes a distribution of the calculated physical quantities with reference to position data stored in accordance with identification data specified by the received radio signals; an identifying unit which identifies a state of an object on the surface based on the distribution of the recognized physical quantities; and a control unit which performs a control depending on the state of the identified object.
摘要:
A sensor includes: a receiver that receives signals sent from outside; a first converter that converts signals received by the receiver into acoustic waves; a second converter that converts the acoustic waves propagating along a predetermined area into signals; a transmitter that transmits the signals that are output from the second converter; and an attachment that is attached to a propagation path of the acoustic waves on the predetermined area, that undergoes an irreversible change in response to an environmental change and that changes the propagation characteristics of the acoustic waves on the predetermined area due to this change.
摘要:
The present invention provides a cooling system including: a cold air generator which supplies cold air into a case of an apparatus; a wireless temperature sensor which is provided near at least one module constituting the apparatus and sends temperature data as a radio signal; a transmitter/receiver which sends a radio signal having a predetermined frequency to the temperature sensor and receives a radio signal from the temperature sensor; and a controller which controls an operation of the cold air generator on the basis of a radio signal received by the transmitter/receiver.
摘要:
A responder authenticity determination system, comprising: a responder that sends a response signal in response to a received signal; an interrogation signal generator that generates an interrogation signal having a random waveform; a transceiver that sends the generated interrogation signal to the responder, and receives a response signal from the responder; and an authenticity determination unit that determines authenticity of the responder based on the received response signal and the random waveform of the generated interrogation signal.
摘要:
A non-contact signal transmission apparatus transmits electric power and a signal in a non-contact manner via magnetic induction. The apparatus includes: a pair of annular electric power cores provided in opposing relationship to each other; a pair of electric power coils respectively provided in an annular form at one of the pair of electric power cores; and a pair of signal coils respectively provided in an annular form inside one of the pair of electric power cores. Relative permeability inside and around the signal coils is lower than relative permeability of the electric power cores.
摘要:
The present invention provides a cooling system including: a cold air generator which supplies cold air into a case of an apparatus; a wireless temperature sensor which is provided near at least one module constituting the apparatus and sends temperature data as a radio signal; a transmitter/receiver which sends a radio signal having a predetermined frequency to the temperature sensor and receives a radio signal from the temperature sensor; and a controller which controls an operation of the cold air generator on the basis of a radio signal received by the transmitter/receiver.
摘要:
A wireless response device comprises an antenna that receives a question signal, an identification signal generating unit that generates a response signal for a question signal received by the antenna, and that operates passively, and an impedance conversion unit provided between the antenna and the identification signal generating unit, whose impedance changes in response to the state of the environment.
摘要:
A sensor includes a substrate, a medium on which a surface acoustic wave propagates, a reference electrode, an antenna, a transducer that includes a first electrode connected to the antenna and a second electrode connected to the reference electrode and arranged opposite to the first electrode, and that has a function of converting a signal received by the antenna into a surface acoustic wave propagating on the medium, and a function of converting a surface acoustic wave propagating on the medium and reaching the transducer into a signal and outputting the signal to the antenna, a reflector that throws back a surface acoustic wave generated by the transducer, propagating on the medium, and reaching the reflector, toward the transducer, and an impedance converter connected to the reference electrode, impedance of which changes in response to a change in circumstances surrounding the sensor.
摘要:
The present invention provides a sheet with plural wireless measuring units, each of which, when a radio signal is sent, measures physical quantity surrounding itself by using the radio signal as an energy source, and generates and sends a radio signal having an attribute reflecting the measured physical quantity.
摘要:
A data input system including electronic paper and a stylus writing device is disclosed. The electronic paper includes a transparent display substrate on which a number of optically readable code patterns have been formed, the optically readable code patterns representing positional information on a display surface, a rear surface substrate opposing the display substrate, and coloring particles that are enclosed between the display substrate and the rear surface substrate and that are movable by applying an electric or a magnetic field. The electronic paper displays an image due to motion of the particle. The stylus writing device includes a writing head provided at the end of the stylus for writing the image by applying an electric or a magnetic field to the electronic paper by contact and includes an optical reading device for optically reading the code patterns formed on the display surface where the end of the stylus contacts.