摘要:
An object of the invention is to reduce 1/f noise and white noise at the same time by integrally reducing noise of an MR sensor and noise of an operation circuit part. A magnetoresistive sensor according to the invention includes a plurality of magnetoresistive sensor parts each having a bridge circuit in which four magnetoresistive elements are connected, and outputs of the respective magnetoresistive sensor parts are connected in parallel to one another to an input of an amplifier circuit (see FIG. 2).
摘要:
The disclosed magnetic immunoassay device, which performs magnetic immunoassays using antigen-antibody reactions, can perform speedy immunoassays without bound/free separation in the test samples. The device is also practical, being capable of stable magnetism measurement without magnetic shielding. The disclosed magnetic immunoassay device is provided with: an excitation coil that uses an AC magnetic field to magnetize a test sample containing a magnetic marker; a magnetism sensor that measures magnetism in the test sample and outputs a magnetism signal; and a displacement sensor for detecting changes in the distance between the test sample and the magnetism sensor. By optimally setting the bandwidth of a lock-in amplifier, which detects changes in the phase of the magnetism signal outputted by the magnetism sensor, and the rotational speed produced by a drive system, which moves the test sample at low speeds, the impact of environment magnetic noise is reduced, and correcting the magnetism signal using distance information obtained from the displacement sensor allows stable magnetism measurement.
摘要:
In order to provide a magnetic field measuring apparatus facilitating the pressure control in a gas cell, or capable of inspecting the internal pressure of the gas cell without using any special process, the magnetic field measuring apparatus is configured such that a process layer of the magnetic field measuring apparatus has such a structure that includes a first hollow portion and a second hollow portion provided opposed to first hollow portion with a first isolation wall interposed therebetween. Alternatively, a method for manufacturing the magnetic field measuring apparatus includes breaking the first isolation wall after generating alkali metal (FIG. 17 and FIG. 20).
摘要:
For measuring hardness of an object, a measurement apparatus is pushed against the object and a degree of hardness calculation system calculates hardness based on information from the measurement apparatus. The measurement apparatus includes an acceleration sensor which outputs first information of acceleration of a contact area of the measurement apparatus, and a second sensor, such as a magnetic sensor or a pressure sensor, which outputs second information based on pressure applied to the contact area. The degree of hardness calculation system generates a second-derivative waveform by twice differentiating a waveform based on the output of the second sensor, compares the second-derivative waveform and the information of acceleration from the acceleration sensor, and calculates hardness of the object based on the comparison result.
摘要:
A living body inspection apparatus includes: a first detecting unit detecting a displacement of two positions in a lateral direction of a subject's larynx; a second detecting unit detecting a swallowing sound of the subject; a displaying unit displaying a waveform regarding the displacement of the two positions formed using information from the first detecting unit and a waveform regarding the swallowing sound formed using information from the second detecting unit; a processor instructing the displaying unit; and a flexible holding member including a pair of sensor holding members having flexibility and provided with the first and second detecting units at one ends, and a mounting member integrally formed with the pair of sensor holding members at other ends to hold the sensor holding members, the other ends being made open so that the mounting member is mounted on and held by the subject's larynx.
摘要:
A compression depth calculation system is configured to calculate the compression depth which is a magnitude of depression of the compressed object generated by the compression and includes a measuring apparatus to be mounted on the object, and a compression depth calculating apparatus is configured to calculate the compression depth on the basis of information from the measuring apparatus. The compression depth calculation apparatus calculates a coefficient of transformation on the basis of a second-order differential waveform created for the information acquired from a magnetic sensor and acceleration information acquired from an acceleration sensor, creates a displacement waveform of a compressed portion by multiplying the acquired information by the coefficient of transformation, and calculates the compression depth on the basis of the displacement waveform.
摘要:
For measuring hardness of an object, a measurement apparatus is pushed against the object and a degree of hardness calculation system calculates hardness based on information from the measurement apparatus. The measurement apparatus includes an acceleration sensor which outputs first information of acceleration of a contact area of the measurement apparatus, and a second sensor, such as a magnetic sensor or a pressure sensor, which outputs second information based on pressure applied to the contact area. The degree of hardness calculation system generates a second-derivative waveform by twice differentiating a waveform based on the output of the second sensor, compares the second-derivative waveform and the information of acceleration from the acceleration sensor, and calculates hardness of the object based on the comparison result.
摘要:
In order to provide a magnetic field measuring apparatus facilitating the pressure control in a gas cell, or capable of inspecting the internal pressure of the gas cell without using any special process, the magnetic field measuring apparatus is configured such that a process layer of the magnetic field measuring apparatus has such a structure that includes a first hollow portion and a second hollow portion provided opposed to first hollow portion with a first isolation wall interposed therebetween. Alternatively, a method for manufacturing the magnetic field measuring apparatus includes breaking the first isolation wall after generating alkali metal (FIG. 17 and FIG. 20).
摘要:
It is an object to calculate a compression depth easily with high degree of accuracy. The present invention provides a compression depth calculation system 1000 configured to calculate the compression depth which is a magnitude of depression of the compressed object generated by the compression and includes a measuring apparatus 1 to be mounted on the object, and a compression depth calculating apparatus 2 configured to calculate the compression depth on the basis of information from the measuring apparatus 1. The compression depth calculation apparatus 2 calculates a coefficient of transformation on the basis of a second-order differential waveform created for the information acquired from a magnetic sensor 19 and acceleration information acquired from an acceleration sensor 13, creates a displacement waveform of a compressed portion by multiplying the acquired information by the coefficient of transformation, and calculates the compression depth on the basis of the displacement waveform.
摘要:
A light pumping magnetic measurement apparatus configured to suppress an influence on a magnetic field from a heater and facilitate reduction in size and integration of a gas cell when heating the gas cell in order to improve a sensitivity of detection of the magnetic field is provided. This measurement apparatus includes a first glass substrate, a substrate 102 having a thermal conductivity higher than glass, and a second glass substrate laminated in this order. At least one portion of a through hole formed on the substrate 102 having a thermal conductivity higher than the glass and penetrating therethrough when viewed in cross section constitutes a void 111 hermetically sealed by the first glass substrate and the second glass substrate, the void is filled with alkali metal gas generated by an alkali metal solid substance or liquid 112, and a flow channel (through hole) 113 connected to inlet-outlet ports 114 provided on the laminated substrate is formed in the vicinity of the void 111 of a substrate 103, so that the temperature of the alkali metal gas may be adjusted by causing the fluid to flow to the flow channel (through hole).