Sensor and rolling bearing apparatus with sensor
First Claim
Patent Images
1. A bearing apparatus, comprising:
- a sensor for a bearing, comprising;
a sensor being incorporated into the bearing or its surroundings, whereinthe sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature,the sensor is a temperature sensor which detects an abnormality of the bearing, andan output voltage characteristic of the temperature sensor is linearized within a temperature range of from 0°
C. to 200°
C.; and
at least one of a rotation speed sensor and a vibration sensor.
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Abstract
A rolling bearing apparatus with sensor includes a sensor unit retaining a plurality of types of sensors for detecting the status of a rolling bearing, in a single holder. The plurality of types of sensors are at least two types of sensors of a rotation speed sensor, a temperature sensor, and an acceleration sensor.
25 Citations
17 Claims
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1. A bearing apparatus, comprising:
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a sensor for a bearing, comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing, and an output voltage characteristic of the temperature sensor is linearized within a temperature range of from 0°
C. to 200°
C.; andat least one of a rotation speed sensor and a vibration sensor. - View Dependent Claims (2, 3, 4)
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5. A bearing apparatus, comprising:
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a sensor for a bearing comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing and one of more fixed resistors is connected to the sensor; and at least one of a rotation speed sensor and a vibration sensor. - View Dependent Claims (6, 7, 8)
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9. A bearing apparatus, comprising:
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a sensor for a bearing comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing, one or more fixed resistors is connected to the sensor, and the sensor is constructed by a thermistor, and the one or more fixed resistor are connected in parallel with the thermistor; and at least one of a rotation speed sensor and a vibration sensor. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A bearing apparatus comprising:
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a sensor for a bearing comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing, and an output voltage characteristic of the temperature sensor is linearized within a temperature range of from 0°
C. to 200°
C.;a temperature detection circuit; and a cable for connecting the sensor and the temperature detection circuit, wherein the temperature detection circuit has a resistor for converting an output of the sensor into a voltage, and an output VT of the temperature sensor from the temperature detection circuit satisfies the following equations;
wherein R16 is a first resistance value, Rt is an electric resistance value of the thermistor, R15 is a second resistance value, RT is a combined resistance value of the thermistor and the second resistance value, and VS is a power voltage supplied to the temperature sensor.
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16. A bearing apparatus comprising:
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a sensor for a bearing comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing, and one or more fixed resistors is connected to the sensor; a temperature detection circuit; and a cable for connecting the sensor and the temperature detection circuit, wherein the temperature detection circuit has a resistor for converting an output of the sensor into a voltage, and an output VT of the temperature sensor from the temperature detection circuit satisfies the following equations;
wherein R16 is a first resistance value, Rt is an electric resistance value of the thermistor, R15 is a second resistance value, RT is a combined resistance value of the thermistor and the second resistance value, and VS is a power voltage supplied to the temperature sensor.
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17. A bearing apparatus comprising:
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a sensor for a bearing comprising; a sensor being incorporated into the bearing or its surroundings, wherein the sensor is configured to decrease an output voltage in conjunction with an increase of measured temperature, the sensor is a temperature sensor which detects an abnormality of the bearing, one or more fixed resistors is connected to the sensor, the sensor is constructed by a thermistor, and the one or more fixed resistor are connected in parallel with the thermistor, a temperature detection circuit; and a cable for connecting the sensor and the temperature detection circuit, wherein the temperature detection circuit has a resistor for converting an output of the sensor into a voltage, and an output VT of the temperature sensor from the temperature detection circuit satisfies the following equations;
wherein R16 is a first resistance value, Rt is an electric resistance value of the thermistor, R15 is a second resistance value, RT is a combined resistance value of the thermistor and the second resistance value, and VS is a power voltage supplied to the temperature sensor.
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Specification