Abstract: An infrared module that enables temperature regulation of an infrared sensor to be readily achieved and a method of correcting the infrared module are provided. The infrared module (10) includes an infrared sensor (11) that detects infrared radiation emitted from an object being measured, a computation and control processor (20) that includes a temperature measurement unit (22) that obtains a signal from the infrared sensor and measures a temperature of its own, the computation and control processor obtaining a temperature signal from the temperature measurement unit and performing a computation, and a heating element (60) that regulates a temperature of the infrared sensor by generating heat, wherein the infrared sensor and the computation and control processor are stacked.

Abstract: Provided is a sensor system having an improved SNR. The sensor system (1) includes: a sensor (gas sensor 10) including a light-emitting element (11) and a detecting element (light-receiving element 12) that detects a signal that is based on light emitted from the light-emitting element; and a computation device (20) that, by taking an interval in which the light-emitting element emits light as an ON interval and an interval in which the light-emitting element does not emit light as an OFF interval, uses the signal as detected in the ON interval and the signal as detected in a plurality of the OFF interval to compute one measurement value.

Abstract: Provided is a photodetection apparatus which includes a mounting board, and an optical sensor device that includes a first surface on the mounting board side and a second surface on a side opposite to the mounting board, and is mounted on the mounting board. The optical sensor device includes an optical sensor that includes a light receiving surface on the second surface side, a signal processing circuit that is electrically connected to the optical sensor, and a lead frame that is provided on the second surface side with respect to the signal processing circuit, and shields a surface of the signal processing circuit on the second surface side. The mounting board has a conductive pattern that faces the signal processing circuit and shields a surface of the signal processing circuit on the first surface side.

Abstract: A gas sensor module (100) includes an infrared light emitting diode (10) configured to emit infrared light in accordance with a drive current, a quantum infrared sensor (20) configured to detect infrared light that passes through a detection target gas, a drive circuit (30) configured to output the drive current to the infrared light emitting diode (10), a charging circuit (50) to be connected to a power source and configured to output a charge current having a smaller current amount than the drive current, and a capacitor (40) configured to charge by the charge current being supplied from the charging circuit (50) and discharge by supplying the drive current to the drive circuit (30).

Abstract: A gas sensor module (100) includes an infrared light emitting diode (10) configured to emit infrared light in accordance with a drive current, a quantum infrared sensor (20) configured to detect infrared light that passes through a detection target gas, a drive circuit (30) configured to output the drive current to the infrared light emitting diode (10), a charging circuit (50) to be connected to a power source and configured to output a charge current having a smaller current amount than the drive current, and a capacitor (40) configured to charge by the charge current being supplied from the charging circuit (50) and discharge by supplying the drive current to the drive circuit (30).

Abstract: An amplifier circuit includes a converter configured to convert a predefined physical quantity to a resistance value, and the resistance value converted by the converter is converted to a voltage value and then amplified. The converter includes variable resistance sensors of piezoresistance elements. A bias unit is configured to determine a bias current of the converter, and includes bias resistances. An operation amplifier unit receives, as input signals, output signals from the bias unit and the converter, and includes feedback resistances respectively connected to input and output ends of a first operational amplifier. The first operational amplifier is a whole differential operational amplifier including a common-mode feedback circuit.

Abstract: An amplifier circuit includes a converter configured to convert a predefined physical quantity to a resistance value, and the resistance value converted by the converter is converted to a voltage value and then amplified. The converter includes variable resistance sensors of piezoresistance elements. A bias unit is configured to determine a bias current of the converter and includes bias resistances. An operation amplifier unit receives, as input signals, output signals from the bias unit and the converter, and includes feedback resistances respectively connected to input and output ends of a first operational amplifier. The first operational amplifier is a whole differential operational amplifier including a common-mode feedback circuit.

Abstract: An oscillation type inertia force sensor includes an oscillator, an oscillation circuit unit, and a detection circuit unit. The oscillation circuit unit functions as a self oscillation circuit of a closed loop with the oscillator as a resonant element, and includes an AGC circuit. The AGC circuit includes a VGA circuit, a comparison circuit comparing a predetermined reference voltage with a voltage of the monitor signal to output a control signal based on the compared result, and a pulse width modulation circuit modulating the control signal to a pulse width modulation signal. Based on the pulse width modulation signal, the driving signal is modulated with the output of the VGA circuit switched between an ON state and OFF state to control the degree of the amplification factor of the VGA circuit.

Abstract: There is provided a charge pump circuit suited for reducing the power consumption. A capacitor 201a, a capacitor 201b, a capacitor 201c, and switching elements 202a to 202k, for electrically connecting or separating capacitors 201a, 201b, and 201c, repeats: a first state where charge supplied from an input power-supply voltage VDD is accumulated in the capacitors 201a and 201b; a second state where the charge accumulated in the capacitor 201a is transferred to the third capacitor 201c, and a positive output power-supply voltage is held by the charge accumulated in the capacitor 201b; a third state where the charge supplied from an input power supply is accumulated in the capacitors 201a and 201b; and a fourth state where the charge accumulated in the capacitor 201b is transferred to the third capacitor 201c, and the positive output power-supply voltage VCC is held by the charge accumulated in the capacitor 201a.

Abstract: There is provided a charge pump circuit suited for reducing the power consumption. A capacitor 201a, a capacitor 201b, a capacitor 201c, and switching elements 202a to 202k, for electrically connecting or separating capacitors 201a, 201b, and 201c, repeats: a first state where charge supplied from an input power-supply voltage VDD is accumulated in the capacitors 201a and 201b; a second state where the charge accumulated in the capacitor 201a is transferred to the third capacitor 201c, and a positive output power-supply voltage is held by the charge accumulated in the capacitor 201b; a third state where the charge supplied from an input power supply is accumulated in the capacitors 201a and 201b; and a fourth state where the charge accumulated in the capacitor 201b is transferred to the third capacitor 201c, and the positive output power-supply voltage VCC is held by the charge accumulated in the capacitor 201a.

Abstract: An oscillation type inertia force sensor includes an oscillator, an oscillation circuit unit, and a detection circuit unit. The oscillation circuit unit functions as a self oscillation circuit of a closed loop with the oscillator as a resonant element, and includes an AGC circuit. The AGC circuit includes a VGA circuit, a comparison circuit comparing a predetermined reference voltage with a voltage of the monitor signal to output a control signal based on the compared result, and a pulse width modulation circuit modulating the control signal to a pulse width modulation signal. Based on the pulse width modulation signal, the driving signal is modulated with the output of the VGA circuit switched between an ON state and OFF state to control the degree of the amplification factor of the VGA circuit.

Abstract: In an elevator interlock apparatus, a catch is disposed on a landing entrance, and a latch is disposed on a landing door. The latch engages with the catch and prevents movement of the landing door in a door opening direction when the landing door is in a fully-closed state. A release detector detects whether or not the latch is in a position engaged with the catch by detecting a change in a magnetic field without contacting the latch.