Abstract:
A method and implementing computerized system are provided for enabling point-specific temperature control for a given airspace. In an exemplary embodiment, infrared sensing devices are positioned in a vehicle to sense and record temperatures at various points within the vehicle airspace. This temperature profile is mapped relative to points within the vehicle and compared to a preferred temperature database to provide temperature control signals. The temperature control signals are, in turn, applied to temperature control air vent devices which are effective to direct appropriate air flows to specific areas such that actual measured temperatures at control points in the vehicle airspace approach the preferred temperatures for the respective control points. In another example, when sensed temperatures are above or below predetermined emergency condition limits for a predetermined period of time, various alarm systems are activated until the sensed emergency condition is corrected.
Abstract:
A check device for an air conditioning system of an automobile and an air conditioner compressor includes a first path for containing coolant flowing therein. An air conditioner compressor, a condenser, an inflate valve and an evaporator are sequentially mounted to the first path to divided the first path. Two opposite ends of the first path respectively connected to a high-pressure outlet and a low-pressure inlet of the air conditioner compressor. Two pressure gauges are respectively mounted to the first path, one before the air conditioner compressor and the other after the air conditioner compressor relative to the flowing direction of the coolant in the first path for showing the difference of the pressure value of the coolant between passing before the air conditioner compressor and passing after the air conditioner compressor.
Abstract:
A signal (Snormai) is provided to a heat element of a temperature sensor, which is recorded as a step response (Lruh, Lbew). From the difference of the step response compared with the reaction adaptively determined with the temperature sensor at zero air circulation, air flow or no air flow is determined.
Abstract:
A method and system for detecting a low-charge condition in a dual-output vehicle air conditioning system. A program reads a set of evaporator, driver-side, and passenger-side temperatures for the purpose of adjusting a temperature in a vehicle passenger compartment. A diagnostic program then analyzes these same readings to determine whether a temperature differential condition exists. Assuming a temperature differential condition exists, the program records a set of the temperature sensor readings and a time period for these temperature readings. The diagnostic program compares this set of information with a set of stored data to determine whether a low-charge condition exists.null
Abstract:
An infrared sensor for determining the temperature of a car interior includes a thermistor and a thermopile in a can and a protective window which exposes the thermopile to the thermal energy of the car interior. The combined outputs of these thermally sensitive elements represents the interior radiant temperature. The effectiveness of the thermopile changes if the window gets dirty to change its output. A resistive heater on the can is used to heat the sensor during calibration. A microprocessor receiving the outputs of the sensor has an algorithm for adjusting a gain which compensates for sensor changes. When the interior temperature is stable, the sensor is heated and thermistor values before and after heating the sensor are used as a basis for adjustment of the gain.
Abstract:
In a thermal-environment sensor which detects thermal conditions in an indoor environment based on the surface temperature of a heating element supplied with a thermal quantity, the spectral emissivity of the outer surface of said heating element closely conforming to the spectral emissivity of the surface of the human skin or clothes thereon so as to bring the radiant heat transfer coefficient of the sensor remarkably near that of the human body.
Abstract:
In a thermal-environment sensor which detects thermal conditions in an indoor environment based on the surface temperature of a heating element supplied with a thermal quantity, the spectral emissivity of the outer surface of said heating element closely conforming to the spectral emissivity of the surface of the human skin or clothes thereon so as to bring the radiant heat transfer coefficient of the sensor remarkably near that of the human body.
Abstract:
A sensor arrangement (1) for measuring a pressure and a temperature in a fluid is disclosed. The sensor arrangement (1) comprises a temperature sensitive electrical element (3) and a pressure sensing electrical element (6), the temperature sensitive electrical element (3) and pressure sensing electrical element (6) are both coupled to one side of a metallic membrane structure (4,16). The metallic membrane structure is arranged to pass on the temperature of the fluid which is at the other side of the membrane structure (4,16) to the temperature sensitive electrical element (3) and to pass on the pressure in the fluid to the pressure sensing electrical element (6). In this way a combined pressure and temperature sensor is obtained which is applicable in vehicle air-conditioning systems working with CO2 as refrigerant.