Abstract: A dehumidifying device for a housing, in particular an electronics housing of an electromotor with a dehumidifying chamber includes a wall inside of which a hygroscopic material is received which is designed to bind air moisture from the dehumidifying chamber. The wall of the dehumidifying chamber includes at least one inner membrane permeable to vapor which can be brought into an active connection with an inner receiving space of the housing and an outer membrane which can be brought into an active connection with the outside environment of the housing. The at least one inner membrane and the outer membrane are permeable to vapor at least in a direction in which a transport of air moisture out of the inner receiving space of the housing through the dehumidifying chamber into an outside environment can be ensured.

Abstract: The invention relates to a device (1) and to a method for detecting filter soiling of a filter system consisting of at least an air filter (10) installed in an air duct (20) and an electrically controlled fan (30) for producing an air flow in the air duct (20), wherein the device (1) comprises at least a motor controller (40) for controlling the fan motor (31) by means of PWM control and an evaluating apparatus (50) for determining the actual rotational speed (ni) of the fan (30) in accordance with the actual degree of modulation (Ti) of the motor current for achieving the present rotational speed (ni), wherein, in the evaluating apparatus (50), setpoint value pairs (nsetpoint, Tsetpoint) for the setpoint rotational speed (nsetpoint) at a certain degree of modulation (Tsetpoint) are also stored, as well as a comparator (51) ins order to compare the actual value pairs (ni, Ti) with the setpoint value pairs (nsetpoint, Tsetpoint) and to obtain the degree of filter soiling of the air filter (10) therefrom.

Abstract: A master-slave system includes a master unit having a digital output for providing a signal or a serial signal sequence of signals, and at least two slave units. Each of the slave units includes at least one digital serial memory having a size of one bit, and each slave unit includes an input and an output. The slave units are serially connected to one another via the inputs and the outputs via a signal line (5). The output of a first slave unit is connected via the signal line to the digital output of the master unit. The master slave system is configured so that a signal supplied by the digital output is detected at the input of the slave unit, in order to raise the address of the corresponding slave unit in each case by the value “1”, to store the signal change in the memory and to output a signal corresponding to the content of the memory at the output of the memory.

Abstract: A dehumidifying device for a housing, in particular an electronics housing of an electromotor with a dehumidifying chamber includes a wall inside of which a hygroscopic material is received which is designed to bind air moisture from the dehumidifying chamber. The wall of the dehumidifying chamber includes at least one inner membrane permeable to vapor which can be brought into an active connection with an inner receiving space of the housing and an outer membrane which can be brought into an active connection with the outside environment of the housing. The at least one inner membrane and the outer membrane are permeable to vapor at least in a direction in which a transport of air moisture out of the inner receiving space of the housing through the dehumidifying chamber into an outside environment can be ensured.

Abstract: The present invention concerns a method for the configuration of a network with network addresses, wherein the network consists of at least one central computer and a plurality of fans, which can communicate via a bus system in wired and/or wireless manner with the central computer, wherein each fan has a rewritable memory and a RFID interface for communication with a preferably mobile communications device, wherein the serial number of the respective fan is saved in its memory and the serial number can be read out by the communications device in the nonoperational voltage-free state of the particular fan.

Abstract: A master-slave system includes a master unit having a digital output for providing a signal or a serial signal sequence of signals, and at least two slave units. Each of the slave units includes at least one digital serial memory having a size of one bit, and each slave unit includes an input and an output. The slave units are serially connected to one another via the inputs and the outputs via a signal line (5). The output of a first slave unit is connected via the signal line to the digital output of the master unit. The master slave system is configured so that a signal supplied by the digital output is detected at the input of the slave unit, in order to raise the address of the corresponding slave unit in each case by the value “1”, to store the signal change in the memory and to output a signal corresponding to the content of the memory at the output of the memory.

Abstract: A method of assigning network addresses for ventilators (3, 4, 5) in a network. Each ventilator (3, 4, 5) has a unique serial number in a serial number memory (8) and a network address in an adjustable network address memory (9). A control unit (1) automatically assigns network addresses to a plurality of ventilators (3, 4, 5). To begin with, all ventilators are assigned an identical start-address as network address, and serial number queries with a serial number mask are sent to the start-address. The serial number mask is comprised of definite and indefinite positions, and the ventilators (3, 4, 5) respond to the serial number mask subject to their serial number. The control unit (1) assigns unique network addresses to the ventilators (3, 4, 5) independently of the responses and/or modifies the serial number mask for further serial number queries.

Abstract: A method of assigning network addresses for ventilators (3, 4, 5) in a network. Each ventilator (3, 4, 5) has a unique serial number in a serial number memory (8) and a network address in an adjustable network address memory (9). A control unit (1) automatically assigns network addresses to a plurality of ventilators (3, 4, 5). To begin with, all ventilators are assigned an identical start-address as network address, and serial number queries with a serial number mask are sent to the start-address. The serial number mask is comprised of definite and indefinite positions, and the ventilators (3, 4, 5) respond to the serial number mask subject to their serial number. The control unit (1) assigns unique network addresses to the ventilators (3, 4, 5) independently of the responses and/or modifies the serial number mask for further serial number queries.