摘要:
A strain-gauge transducer comprises a strain gauge enclosed between pressure members which deform the strain gauge, the strain gauge comprising a plate-shaped substrate provided with strain-detection elements. At least one spring having a flexibility larger than that of the substrate is arranged between the strain gauge and at least one of the pressure members, said substrate and said spring being in contact with one another so as to be jointly subjected to deformations. The spring may be a blade spring, a helical spring, or a cylindrical buffer spring. The excursions of the pressure members can be limited by means of stops. In the case of a blade spring the contact between the substrate and the spring can be controlled by giving the substrate a toothed shape or by providing it with contact elements.
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 cook-top (10) includes a plurality of heating elements (11a, 12a) which are activated by function controls. The heating elements are covered by a plate (15) which are fixedly connected to strain-guage modules (30) which detect the forces exerted on the plate as a result of loads placed on the heating elements. By computing the center of gravity of the forces, controls (70, 75, 76) identify a heating element whose load has varied and influence its electric power supply. The power supply may then be turned off, reduced or controlled. The function controls may be pressure-sensitive touch controls.
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 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 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:
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 iron comprises a heating element (97) and heating-control means (96) for the heating element. It has a humidity detector (60) which measures the degree of humidity of the fabric and which influences the electric power dissipated in the heating element. In order to measure the degree of humidity a circuit (99) measures the resistivity of the fabric between two contact electrodes (62a, 62b) and subsequently averages the electric signal resulting from the movement of the iron on the fabric. A circuit (89) may be added which measures the rhythm of the variations of said electric signal and which thus detects whether the iron is in use or not in use.
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:
A strain gauge element in which the compression forces applied by at least one of the pressure members are transmitted to a first surface of the strain gauge by a cross formed by two cylindrical rods, the contact between the strain gauge (or the said pressure member) and the cross being exerted on a generating line of one of the rods (or the other rod) of the cross, permitting the said pressure member to carry out a tilting movement about the said rod (or the other rod).The reactionary compression forces applied to a second surface of the strain gauge are applied either by at least one cross or by rods.