Vacuum cleaner comprising a suction tube and suction tube provided with a remote-control circuit comprising a capacitive sensor
First Claim
1. A vacuum cleaner comprising a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), and a suction tube (200) coupled to the housing (100) and comprising a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), at least one of said electronic circuit (120) and said remote control circuit (220) comprising a signal processing unit (SPU), wherein the remote control circuit (220) comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), said presence of a part of the human body giving rise to a capacitance variation which is detected by the capacitive sensor (CS), which detection enables the signal processing unit (SPU) to process a control signal related to the capacitance variation detected and the electronic circuit (120) to be controlled by the remote control circuit (220).
1 Assignment
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Accused Products
Abstract
A vacuum cleaner is provided which comprises a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), and a suction tube (200) coupled to the housing (100) and comprising a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), which control circuit (220), in order to provide ease of operation without any disturbances, comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), which detection enables the electronic circuit (120) to be controlled by the remote control circuit (220).
85 Citations
12 Claims
- 1. A vacuum cleaner comprising a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), and a suction tube (200) coupled to the housing (100) and comprising a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), at least one of said electronic circuit (120) and said remote control circuit (220) comprising a signal processing unit (SPU), wherein the remote control circuit (220) comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), said presence of a part of the human body giving rise to a capacitance variation which is detected by the capacitive sensor (CS), which detection enables the signal processing unit (SPU) to process a control signal related to the capacitance variation detected and the electronic circuit (120) to be controlled by the remote control circuit (220).
- 4. A suction tube for use with a vacuum cleaner comprising a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), which suction tube (200) comprises a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), at least one of said electronic circuit (120) and said remote control circuit (220) comprising a signal processing unit (SPU), wherein the remote control circuit (220) comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), said presence of a part of the human body giving rise to a capacitance variation which is detected by the capacitive sensor (CS), which detection enables the signal processing unit (SPU) to process a control signal related to the capacitance variation detected and the electronic circuit (120) to be controlled by the remote control circuit (220).
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6. A vacuum cleaner comprising a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), and a suction tube (200) coupled to the housing (100) and comprising a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), at least one of said electronic circuit (120) and said remote control circuit (220) comprising a signal processing unit (SPU),
wherein the remote control circuit (220) comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), said presence of a part of the human body giving rise to a capacitance variation which is detected by the capacitance sensor (CS), which detection enables the signal processing unit (SPU) to process a control signal related to the capacitance variation detected and the electronic circuit (120) to be controlled by the remote control circuit (220), the signal processing unit (SPU) comprising a first oscillator (O1) having a capacitor constituted by the capacitive sensor (CS) and an output, a frequency-to-signal converter (C1, D1, D2, C2, R2, N3) having an input coupled to the output of the first oscillator (O1) and having an output, and a first switching element (R3, T1) having a control current path coupled to the output of the frequency-to-signal converter (C1, D1, D2, C2, R2, N3) and having a main current path for carrying a control signal in dependence upon the capacitive sensor (CS).
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10. A suction tube for use with a vacuum cleaner comprising a housing (100) provided with an electric motor (110) and with an electronic circuit (120) for controlling the electric motor (110), which suction tube (200) comprises a grip (210) with a remote control circuit (220) for controlling the electronic circuit (120), at least one of said electronic circuit (120) and said remote control circuit (220) comprising a signal processing unit (SPU), wherein the remote control circuit (220) comprises a capacitive sensor (CS) for detecting the presence of a part of a human body in the proximity of the grip (210), said presence of a part of the human body giving rise to a capacitance variation which is detected by the capacitive sensor (CS), which detection enables the signal processing unit (SPU) electronic circuit (120) to process a control signal related to the capacitance variation detected and the to be controlled by the remote control circuit (220),
the signal processing unit (SPU) comprising a first oscillator (O1) having a capacitor constituted by the capacitive sensor (CS) and an output, a frequency-to-signal converter (C1, D1, D2, C2, R2, N3) having an input coupled to the output of the first oscillator (O1) and having an output, and a first switching element (R3, T1) having a control current path coupled to the output of the frequency-to-signal converter (C1, D1, D2, C2, R2, N3) and having a main current path for carrying a control signal in dependence upon the capacitive sensor (CS).
Specification