Abstract: An arrangement in a traffic sign for replacing a plate part (4) included therein, whereby the traffic sign comprises a plurality of mutually differing plate parts (4a, 4b) of which one at a time may be switched visible and directed on a traffic route. A first body part (1) of the traffic sign, most suitably a vertical post is fixedly installed and has, adapted as an extension by a bearing (11);(12), a second body part (10) which is turnable by means of a power device (7), such as an electric motor, and to said second body part (10) there are connected different plate parts (4a, 4b) directed in different directions, whereby the desired plate part of said plate parts is turnable in the direction of the traffic route by means of said power device, and that the traffic sign includes one or more cover parts (6) that cover those plate parts (4a) or (4b) that are not meant to control traffic.

Abstract: The invention comprises a safety system comprising a vehicle identifier (10) arranged to a moving vehicle or work machine (1) and capable of radio communication and, arranged in an operating connection therewith, an alarm unit (20), and a personal identifier (30, 30a) arranged in connection with the moving unit and capable of radio communication, the personal identifier (30, 30a) comprising an alerting device for warning of vehicles or work machines in the area. In addition, said alarm unit (20) comprises warning equipment for warning of units moving in the area. The vehicle identifier and/or the personal identifier of the safety system are configured to determine a distance between the vehicle identifier and the personal identifier on the basis of at least one signal transmitted between the vehicle identifier and the personal identifier.

Abstract: The invention comprises a method and a system for drawing attention to a person crossing a passageway. The system comprises at least two traffic signs in connection with each other through the passageway, at least one control device operationally connected to the traffic sign, at least one detector, at least one light source within the traffic sign, and at least one illumination device to illuminate the person. In the system, the control device is arranged to receive information from at least one detector, and based on said information determine the position of the person on said passageway or outside of it, and when the person is located outside the passageway, to activate at least one light source and/or illumination device of the traffic sign, and to send information to at least one other traffic sign to activate at least one light source and/or illumination device of said at least one other traffic sign.

Abstract: The invention comprises a method and a system for drawing attention to a person crossing a passageway. The system comprises at least two traffic signs in connection with each other through the passageway, at least one control device operationally connected to the traffic sign, at least one detector, at least one light source within the traffic sign, and at least one illumination device to illuminate the person. In the system, the control device is arranged to receive information from at least one detector, and based on said information determine the position of the person on said passageway or outside of it, and when the person is located outside the passageway, to activate at least one light source and/or illumination device of the traffic sign, and to send information to at least one other traffic sign to activate at least one light source and/or illumination device of said at least one other traffic sign.

Abstract: The invention comprises a safety system comprising a vehicle identifier (10) arranged to a moving vehicle or work machine (1) and capable of radio communication and, arranged in an operating connection therewith, an alarm unit (20), and a personal identifier (30, 30a) arranged in connection with the moving unit and capable of radio communication, the personal identifier (30, 30a) comprising an alerting device for warning of vehicles or work machines in the area. In addition, said alarm unit (20) comprises warning equipment for warning of units moving in the area. The vehicle identifier and/or the personal identifier of the safety system are configured to determine a distance between the vehicle identifier and the personal identifier on the basis of at least one signal transmitted between the vehicle identifier and the personal identifier.

Abstract: There is an antenna, three feed ports, two switches, and two impedances. In an embodiment, the first and second feed ports interface respective FM transmitter and FM receiver, and the third feed port interfaces Bluetooth, WLAN and/or GPS radios. The two switches are disposed along the antenna. A first throw of them renders a balanced mode for the antenna seen by the first feed port and a second throw renders an unbalanced mode for the antenna seen by the second feed port. The two impedances are disposed and configured such that the antenna, for signals in a second frequency band at the third feed port and which are impeded by the two impedances, is an unbalanced mode for the first throw of the switches and is an unbalanced mode for the second throw of the switches. Also detailed is a method for making an electronic device having such an antenna.

Abstract: A disc (1) cleaner, the body of which is formed of two or several parts (2),(3),(4), attached to each other, which can be mutually closed and opened. One part (4) of the parts comprising a nest assembly (7) partly receiving disc (1), and one part (2) of the parts comprising an attachment assembly of the wiping and washing means (5), whereby, with said parts closed facing each other, the washing means (5) nestle against disc (1) in nest (7).

Abstract: The invention relates to a transceiver and a method for receiving a RF signal in a transceiver. The invention relates in particular to mobile stations of mobile telecommunication systems that employ both time division duplex (TDD) and frequency division duplex (FDD) to provide isolation between transmission and reception. An idea of the invention is to control (29) the bias of the LNA-type preamplifier (2) in the reception in such a manner that when receiving during transmission, a greater bias is used than when transmission is not taking place. This way the amplifier will have a great bias when a signal from the transmitter part (17-26) is coupled to the receiver part, and since increasing the bias will improve the linearity of the amplifier (2), less unwanted components will appear in the amplifier. The mean power consumption in the receiver will, however, remain reasonably small because a small bias will be used during the times when no transmission is taking place.

Abstract: The base station includes for monitoring the quality of a radio link between the base station and mobile stations, a generator (1, 2, 3) for generating a square wave signal (CK) having a monitoring signal frequency; and a filter (4) for generating a monitoring signal (CS) from the square wave signal (CK). The frequency of the monitoring signal is set by a control (12) having two modes of operation; in the first mode of operation, the control controls the generator to transmit an analog monitoring signal by maintaining the frequency of the square wave signal (CK) at a constant value throughout the duration of the monitored radio link, and in the second mode of operation, the control controls the generator (1, 2, 3) to transmit a digital monitoring signal by varying the frequency during the monitored radio link in response to changes in the logical state of the monitoring signal between a first frequency corresponding to the first logical state and a second frequency corresponding to the second logical state.

Abstract: A base station is provided which supervises the quality of a radio link and including a generator circuit for generating a supervising signal having a desired baseband frequency, a measuring circuit for monitoring the level of the baseband supervising signal, and a transmitting circuit for frequency-modulating a transmitting-frequency carrier of said baseband supervising signal. The measuring circuit comprises an A/D converter for deriving digital sample values from the baseband supervising signal, and a control circuit which monitors the deviation of sample values from that of a digital sample value corresponding to a supervising signal level causing a desired deviation in the output signal of the transmitting circuit on the basis of at least one reference value stored in a memory in connection with the calibration so that the deviation is no more than a predetermined difference value.