摘要:
An appliance (5) for toasting a product (10) comprises detection means (12) for detecting variations of a toasting condition of the product during toasting and for allowing a user to adjust the toasting result as desired. The appliance comprises a temperature sensor (13) which measures the temperature of the product. Timing means (14) are started when a predetermined temperature (Td) is reached. The timing means (14) are stopped when either another predetermined temperature (Tf) is reached or when a predetermined period has elapsed. The appliance is also capable of controlling a process of defrosting of the product prior to toasting of said product.
摘要:
A device (5) for measuring temperatures without mechanical contact comprises a bolometer with thermistors (20.sub.1, 20.sub.2, 20.sub.3, 20.sub.4) arranged as a Wheatstone bridge. Some of the thermistors (202, 204) are shielded and some of the thermistors (20.sub.1, 20.sub.3) are not shielded so as to allow or not to allow them, respectively, to receive thermal radiation (25) from an object (OBJ). The thermal radiation heats the non-shielded thermistors and produces an unbalance (v) of the bridge. This unbalance is canceled by heating all the thermistors by an additional heating (18, 26). In the balanced state the temperature of the object is equal to that of the thermistors. The additional heating is preferably achieved by causing the electric power supplied to the bridge to be varied. Computing means (14) enable the temperature of the object to be derived from current/voltage ratios relating to the thermistors.
摘要:
Electric toothbrush comprising means for locating dental plaque An electric toothbrush comprises means (1, 22) for emitting excitation radiation towards teeth (10), means (2, 24) for detecting luminescence return radiation emitted by affected tooth areas, optical fibre means (4a, 4b, 4c) for guiding the excitation radiation, and electrical means (14, 15) for imposing a brushing rhythm. The optical fibre means pick up a narrow beam of return radiation and guide it to the detection means (24) which comprise filter means (40, 42) for extracting at least one useful signal component from a noise component, the useful signal component being in synchronism with the brushing rhythm, the detection means (24) converting the useful signal into a location signal (44) revealing the affected areas.
摘要:
An air circulation heating apparatus, for example a hair drier or an electric radiator, is controlled by an infrared sensor which measures at a distance the thermal radiation emitted by an object heated by the apparatus. The sensor is placed in the flow of hot air to ensure reliable operation of the apparatus and to ensure that the sensor supplies correct measurement data. A screen is provided adjacent the sensor in the path of the airflow which prevents the flow of hot air from hitting the sensor directly.
摘要:
An appliance for infusing a substance, for example coffee, comprises means (23, 16) for dividing an initial quantity of water into a pre-wetting quantity and at least one additional quantity, which quantities are poured on in at least two steps which are spaced in time. Means (20a, 20b, 22) for continuously measuring the level of the water to be poured on enable several dividing programs to be selected.
摘要:
An iron includes a heating element (97), heating control (11), for the heating element, and a control thermostat (13). To determine the type of fabric on which the iron is placed during ironing, the iron includes a type-of-fabric detector, which can be an electrostatic detector (35) or an optical detector (85). A maximum temperature limit T.sub.s defines the maximum ironing temperature of delicate fabrics. In the case of incorrect settings the operation of the iron is invalidated. The operation of the detector can be rendered dependent upon a humidity detector (60) which measures a resistivity of the fabric. The operation of these detectors (35, 85) may also depend on a detector for the state of use of the iron.
摘要:
An electrical hair dryer (5) comprises a housing (10) with an air inlet (11) and an air outlet (12) between which are arranged a mechanism for delivering a flow of hot air, comprising an air circulation mechanism (13) and air heating mechanism (14), and detection mechanism (20) for measuring a radiation emitted by the hair (8). The hair dryer also includes a control mechanism (18) which jointly acts on the air circulation 13) and the heating (14) mechanisms, for regulating the flow of hot air during drying as a function of the measurements of the emitted radiation, which effects simultaneous variation in the flow rate and temperature of the air flow as a result of the measurements of the emitted radiation.
摘要:
A fiber-optical pressure sensor, comprising a pressure member (21, 22) which encloses the optical fiber (20) in a sandwich-like manner, and used for the detection of intruders is provided. The pressure sensor is formed by a continuous cable which can be buried and which comprises at least one optical fiber (20) which is capable of detecting, along its entire length, components of a pressure applied to a surface zone of the ground, notably by an intruder. The cable can be wound along an axis of rotation which is substantially perpendicular to its longitudinal direction and can be bent in a direction which is substantially parallel to this axis of rotation. The pressure member may have a continuous or a segmented structure. It may be formed by plates (21, 22) or strips (21, 22) which are rigid or semi-rigid. The pressure member may comprise ribs (27, 28, 29) which serve to capture forces which act in the lateral direction.
摘要:
An iron comprises a heating element (97), heating-control (96) for the heating element (97), and a motion detector. The motion detector can be an electrostatic detector (35) which determines an amount of electrostatic charges present at the fabric. The motion detector can be a humidity detector (60) which detects a resistivity of the fabric between two electrodes (62.sub.a, 62.sub.b) which are in contact with the fabric. A counting circuit (89) calculates a number of halfwaves of an electric signal supplied by one of the detectors and determines whether the iron is in use or is not in use. Moreover, the degree of humidity of the fabric can be determined by a measurement circuit (99).
摘要:
A cook-top (10) is provided which includes at least one cooking section (12a) heated by at least one heating element which is activated by function controls (9). It includes at least one detector (20) which detects the presence of a cooking utensil on at least one cooking section (12a), the detector actuating a timing means (22) (24) in order to turn off or to reduce the heating of the cooking section when the utensil has been removed, and to turn on the heating of the cooking section when the utensil is put back on the cooking surface if the absence time has been shorter than a given time.The detector may be responsive (20) (26) to the weight of the utensil and/or the temperature of the heating surface.