Abstract: A measurement apparatus unit is mountable to a vehicle. The measurement apparatus unit includes a first sensor, a first storage apparatus, and a first relay. The first sensor is arranged in a first area among a plurality of areas that are segmented in advance in the vehicle. The first storage apparatus stores therein detection data that is acquired from the first sensor. The first storage apparatus is arranged in a second area that differs from the first area among the plurality of areas. The first relay communicably connects at least the first sensor and the first storage apparatus. The first area and the second area are separated from each other in a traveling direction of the vehicle.

Abstract: A connection assembly includes a sensor substrate, a layer substrate coupled to the sensor substrate so as to face an upper surface of the sensor substrate, and a wire connected between the sensor substrate and the layer substrate. The sensor substrate includes first and second projections provide on the upper surface of the sensor substrate and extending in an extension direction along the upper surface of the sensor substrate. The wire has a first end sandwiched between the layer substrate and the first projection, and a second end sandwiched between the layer substrate and the second projection. The connection assembly provides reliable connection.

Abstract: A sensor includes a sensor element, a package accommodating the sensor element in an inside of the package, a grounding electrode disposed in the package, a lid covering an opening of the package, and a lead extending from the package. The lead includes first and second portions. The first portion of the lead is electrically connected to the grounding electrode and extends along a side surface of the package with a gap provided between the first portion and the side surface. The second portion of the lead is disposed between the lid and the package and extends toward the inside of the package. In this sensor, the opening can be sealed without soldering and reliably connect the lid to the grounding electrode.

Abstract: A connection assembly includes a sensor substrate, a layer substrate coupled to the sensor substrate so as to face an upper surface of the sensor substrate, and a wire connected between the sensor substrate and the layer substrate. The sensor substrate includes first and second projections provide on the upper surface of the sensor substrate and extending in an extension direction along the upper surface of the sensor substrate. The wire has a first end sandwiched between the layer substrate and the first projection, and a second end sandwiched between the layer substrate and the second projection. The connection assembly provides reliable connection.

Abstract: A sensor includes a sensor element, a package accommodating the sensor element in an inside of the package, a grounding electrode disposed in the package, a lid covering an opening of the package, and a lead extending from the package. The lead includes first and second portions. The first portion of the lead is electrically connected to the grounding electrode and extends along a side surface of the package with a gap provided between the first portion and the side surface. The second portion of the lead is disposed between the lid and the package and extends toward the inside of the package. In this sensor, the opening can be sealed without soldering and reliably connect the lid to the grounding electrode.

Abstract: A vibration power generator comprises: a fixed substrate; a vibrating body having a surface opposed to the fixed substrate, the vibrating body being vibratable to the fixed substrate; electret electrodes aligned in a vibration direction on one of the surface of the fixed substrate and the surface of the vibrating body; and first fixed electrodes and second fixed electrodes alternately aligned in the vibration direction on the other thereof, wherein when the vibrating body is at a resting position, each of the electret electrodes overlaps with both electrodes of a corresponding fixed electrode pair, the corresponding fixed electrode pair being one of the first fixed electrodes and one of the second fixed electrodes that are opposed to the electret electrode, and when the vibrating body is not at a resting position, each of the electret electrodes always overlaps with at least one electrode of the corresponding fixed electrode pair.

Abstract: A sensor includes a first substrate, a supporter connected to the first substrate, a weight facing the first substrate, a beam of which first end is connected to the supporter and of which second end is connected to the weight, a second substrate facing the weight, and a first projection disposed on the first substrate. This senor allows effectively preventing the beam from a breakage caused by the beam twisted due to a rotation of the weight when an impact is applied to the sensor. The sensor thus can improve anti-impact property.

Abstract: Electricity generated by a vibration power generator 200 can be extracted efficiently by providing the vibration power generator 200, a rectifier circuit bridge 205, an output controlling circuit 201, a load detecting circuit 202 and a frequency detecting circuit 204 and detecting a frequency of the vibration power generator 200 and then controlling an impedance of an output controlling circuit 101 depending on the frequency.

Abstract: A vibration power generator includes a first substrate, a first electrode on the first substrate, a second substrate spaced from and opposite the first substrate, and a second electrode on the second substrate. The first electrode vibrates with respect to the second substrate, and the first electrode and the second electrode include a film retaining electric charges. The vibration generator includes a third electrode with a film retaining electric charges on the first substrate, and a fourth electrode with a film retaining electric charges on the second substrate. The third electrode and the fourth electrode are arranged so that the first substrate is retained in a predetermined position when an external force does not act on the first substrate, while an electrostatic force for returning the first substrate to a predetermined position acts on the first substrate and the first substrate moves with respect to the second substrate.

Abstract: A vibration power generator including a first substrate; first electrodes disposed over one surface of the first substrate; a second substrate spaced from the first substrate and opposed to the one surface of the first substrate; and second electrodes disposed over one surface of the second substrate so as to be opposed to the first electrodes, wherein one of the first and second electrodes includes a film holding a charge; one of the first and second substrates is a vibratory substrate; and an overlapped area between the first and second electrodes becomes minimum and then maximum, or becomes maximum and minimum, and an electrostatic capacity Cp formed between the first and second electrodes when the overlapped area becomes maximum changes, and the change of Cp comprises an increase of Cp, while the vibratory substrate is displaced from the vibration center to the vibration end.

Abstract: A vibration power generator is provided that increases output power by improving the electrostatic capacitance when the area of the overlap between electret electrodes and counter electrodes is maximum while having the function of limiting the spread of the electric field from the electret electrodes.

Abstract: A vibration power generator comprises: a fixed substrate; a vibrating body having a surface opposed to the fixed substrate, the vibrating body being vibratable to the fixed substrate; electret electrodes aligned in a vibration direction on one of the surface of the fixed substrate and the surface of the vibrating body; and first fixed electrodes and second fixed electrodes alternately aligned in the vibration direction on the other thereof, wherein when the vibrating body is at a resting position, each of the electret electrodes overlaps with both electrodes of a corresponding fixed electrode pair, the corresponding fixed electrode pair being one of the first fixed electrodes and one of the second fixed electrodes that are opposed to the electret electrode, and when the vibrating body is not at a resting position, each of the electret electrodes always overlaps with at least one electrode of the corresponding fixed electrode pair.

Abstract: A vibration power generator is provided that increases output power by improving the electrostatic capacitance when the area of the overlap between electret electrodes and counter electrodes is maximum while having the function of limiting the spread of the electric field from the electret electrodes.

Abstract: A vibration power generating device includes a first substrate and a second substrate, a first electrode formed on the first substrate, a fixed structural body, elastic structural bodies which connect the first substrate and the fixed structural body with each other, and a second electrode formed on the second substrate. Since the overlapping area of the electrodes is increased by arranging rectangular or square conductor parts of the first electrode and rectangular or square conductor parts of the second electrode in a checkerboard pattern, a generation region where power is generated by vibration is increased.

Abstract: There is provided a vibration power generator for converting vibration energy into electric power. The vibration power generator includes a fixed substrate, and a vibrator capable of vibrating with respect to the fixed substrate. Fixed electrode pieces are disposed on the fixed substrate, and electret electrode pieces opposed to the fixed electrode pieces are disposed on the vibrator. The vibration power generator is adapted to generate electricity, through changes in capacitances between the fixed electrode pieces and the electret electrode pieces, due to the vibration of the vibrator. The electret electrode pieces have opposite end portions in the vibration direction which have a higher average electric-charge density per unit area than that of middle portions, in the vibration direction, of the electret electrode pieces.

Abstract: A vibration power generator 110 including a first fixed substrate 111L, a second fixed substrate 111U, a movable substrate 112 which is vibratory relative to the first and second fixed substrates, a plurality of first electrodes 119a formed over the second fixed substrate, a plurality of second electrodes 119b formed on the movable substrate and opposed to the first electrodes, wherein one of the first electrode 119a and the second electrode 119b includes a film holding a charge, is fixed to a rotating body such that the first fixed substrate 111L, the second fixed substrate 111U and the movable substrate 112 are perpendicular to a radial direction of the rotating body and the first fixed substrate is disposed nearer to a rotational axis side of the rotating body.

Abstract: A vibration power generator includes a first substrate, a first electrode disposed on a lower surface of the first substrate and including a film retaining electric charges, a second substrate opposing the lower surface of the first substrate, a second electrode disposed on an upper surface of the second substrate, a third electrode disposed on the upper surface of the first substrate and including a film retaining the electric charges, a third substrate opposing the upper surface of the first substrate, and a fourth electrode disposed on a lower surface of the third substrate and opposing the third electrode. The film of the first electrode has a polarity different from a polarity of the film of the third electrode, and the vibration power generator includes a restoring force generation member giving a restoring force when an external force is not exerted to the first substrate.

Abstract: A power generator comprises a first substrate 102, a second substrate 103 opposed to the first substrate, first electrodes 104L and 104R and a first electrode 106 which are formed on the first substrate, second electrodes 105L and 105R and a second electrode 107 which are formed on the second substrate, wherein electric charge of the same polarity is held by the first electrode and the second electrode, and the first substrate vibrates such that an angle formed between a segment connecting a centroid of the first electrode 104L (104R) and a centroid of the second electrode 105L (105R), and a half line extending from the centroid of the second electrode 105L (105R) toward the first electrode 104L (104R) in a stationary state in parallel to the main surface of the second substrate does not exceed 55 degrees while the first substrate 102 is stationary and vibrates.

Abstract: A vibration power generator including a first substrate; first electrodes disposed over one surface of the first substrate; a second substrate spaced from the first substrate and opposed to the one surface of the first substrate; and second electrodes disposed over one surface of the second substrate so as to be opposed to the first electrodes, wherein one of the first and second electrodes includes a film holding a charge; one of the first and second substrates is a vibratory substrate; and an overlapped area between the first and second electrodes becomes minimum and then maximum, or becomes maximum and minimum, and an electrostatic capacity Cp formed between the first and second electrodes when the overlapped area becomes maximum changes, and the change of Cp comprises an increase of Cp, while the vibratory substrate is displaced from the vibration center to the vibration end.

Abstract: A power generator comprises a first substrate 102, a second substrate 103 opposed to the first substrate, first electrodes 104L and 104R and a first electrode 106 which are formed on the first substrate, second electrodes 105L and 105R and a second electrode 107 which are formed on the second substrate, wherein electric charge of the same polarity is held by the first electrode and the second electrode, and the first substrate vibrates such that an angle formed between a segment connecting a centroid of the first electrode 104L (104R) and a centroid of the second electrode 105L (105R), and a half line extending from the centroid of the second electrode 105L (105R) toward the first electrode 104L (104R) in a stationary state in parallel to the main surface of the second substrate does not exceed 55 degrees while the first substrate 102 is stationary and vibrates.