A system and method for determining the type of an analog sensor device in a process control system comprising at least a terminal block unit comprising four connection ports connectable with an analog sensor device, wherein the sensor device to be determined is a 2-wire connection sensor device, a 3-wire connection sensor device, or a 4-wire connection sensor device. The method includes detecting whether: a predefined resistance value is present for a 2-wire connection sensor device, a 3-wire connection sensor device, a predefined resistance value between two predefined pairs of connection ports of the terminal block unit is provided, or a 4-wire connection sensor device is connected to the terminal block unit.

An integrated circuit includes: a resistor terminal adapted to be coupled to a first end of a first resistor; a ground terminal adapted to be coupled to a second end of the first resistor; a second resistor in series with the first resistor and having a first end and a second end, the second end coupled to the resistor terminal; a first capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal is coupled to: the first end of the second resistor via a first switch; and the ground terminal via a second switch; a second capacitor having a third capacitor terminal and a fourth capacitor terminal, the third capacitor terminal is coupled to: the first end of the second resistor via a third switch; the resistor terminal via a fourth switch; and the ground terminal via a fifth switch.

An integrated circuit includes: a resistor terminal adapted to be coupled to a first end of a first resistor; a ground terminal adapted to be coupled to a second end of the first resistor; a second resistor in series with the first resistor and having a first end and a second end, the second end coupled to the resistor terminal; a first capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal is coupled to: the first end of the second resistor via a first switch; and the ground terminal via a second switch; a second capacitor having a third capacitor terminal and a fourth capacitor terminal, the third capacitor terminal is coupled to: the first end of the second resistor via a third switch; the resistor terminal via a fourth switch; and the ground terminal via a fifth switch.

A temperature measurement system of a vehicle includes a controller, a first temperature sensor associated with a first location, and a second temperature sensor associated with a second location. The temperature measurement system is calibratable based upon a comparison of a temperature of the first location and a temperature of the second location, wherein the temperature of at least one of the first location and the second location is determined after a predetermined time from an end of operation of the vehicle.

A temperature measurement system of a vehicle includes a controller, a first temperature sensor associated with a first location, and a second temperature sensor associated with a second location. The temperature measurement system is calibratable based upon a comparison of a temperature of the first location and a temperature of the second location, wherein the temperature of at least one of the first location and the second location is determined after a predetermined time from an end of operation of the vehicle.

A method includes using a thermistor as a temperature sensor and connecting a pull-up resistor in series to the thermistor in a voltage divider circuit. The pull-up resistor is fabricated in an integrated circuit and includes a series of resistor segments connected to selectable voltage output tabs. The method further includes selecting an output voltage tab for a selected resistance segment having a selected resistance value to match a target resistance value for the pull-up resistor that is smaller than the as-fabricated resistance value of the pull-up resistor, calculating a ratio of a voltage on the thermistor and a voltage on the selected output voltage tab in the voltage divider circuit, and mapping the calculated ratio to a temperature value of the thermistor based on a temperature-resistance relationship of the thermistor in combination with the target resistance value of the pull-up resistor.

A method includes using a thermistor as a temperature sensor and connecting a pull-up resistor in series to the thermistor in a voltage divider circuit. The pull-up resistor is fabricated in an integrated circuit and includes a series of resistor segments connected to selectable voltage output tabs. The method further includes selecting an output voltage tab for a selected resistance segment having a selected resistance value to match a target resistance value for the pull-up resistor that is smaller than the as-fabricated resistance value of the pull-up resistor, calculating a ratio of a voltage on the thermistor and a voltage on the selected output voltage tab in the voltage divider circuit, and mapping the calculated ratio to a temperature value of the thermistor based on a temperature-resistance relationship of the thermistor in combination with the target resistance value of the pull-up resistor.

A smoke alarm system comprises a smoke alarm, a temperature detector, a first sampling circuit, a second sampling circuit and an analysis module; a first terminal of the first sampling circuit is connected to the smoke alarm, and a second terminal is connected to a first input terminal of the analysis module; the first sampling circuit is used for sampling from the smoke alarm to obtain a smoke sample value which is then output to the analysis module; a first terminal of the second sampling circuit is connected to the temperature detector, and a second terminal is connected to a second input terminal of the analysis module; the second sampling circuit is used for sampling from the temperature detector to obtain a temperature sample value which is then output to the analysis module; and the analysis module determines whether a smoke alarm signal is generated.

A method detects electrical fault states of at least one energy storage cell of a removable battery pack using a first monitoring unit integrated in the removable battery pack and at least two temperature sensors integrated in the removable battery pack. In an electrical device, in particular a charging device, a diagnostic device or an electrical consumer, that can be electrically connected to the removable battery pack, a measured temperature of a first of the at least two temperature sensors is evaluated by a further monitoring unit of the electrical device and, essentially simultaneously, another measured temperature of a second of the at least two temperature sensors is evaluated by the first monitoring unit of the removable battery pack.

An in-vehicle temperature detection circuit includes a temperature detecting unit including a plurality of individual detecting units, each having a first resistor and a temperature detecting element connected in series between a first conductive path to which a predetermined source voltage is applied and a reference conductive path. A plurality of bipolar transistors are connected to a corresponding individual detecting units. A second conductive path is electrically connected to each of emitters of the bipolar transistors. In each bipolar transistor, a base is electrically connected to a third conductive path between the first resistor and the temperature detecting element of the individual detecting unit corresponding to the bipolar transistor. A voltage reflecting the lowest voltage among the voltages applied to the third conductive paths in the plurality of individual detecting units is applied to the second conductive path.