摘要:
A device for capturing insects comprises a housing (10) with a capturing opening (11) and comprises an immobilizing device for at least temporarily immobilizing the insects. Captured insects are kept in a collecting device (13) for collecting and retaining after they have passed through the capturing opening (11). Insects can be captured in a simple and convenient manner by virtue of the fact that a capturing area, which can be influenced at least temporarily by the immobilizing device, is provided outside of the device having the associated capturing space (14) in order to bring the insects from this capturing space to the collecting device (13) via the capturing opening, and that the immobilizing device is formed by at least one light source (12) for blinding the insects. After switching on the immobilizing device, the capturing space must be merely placed over the insect so that the insect then enters the collecting device (13).
摘要:
A device for detecting the wetting and/or soiling of a windscreen surface, in particular in a vehicle, comprises a camera with a sensor having a plurality of light-sensitive pixels arranged as an array and adapted to be illuminated according to an illumination cycle, and having a focussing optic for a camera focus set to almost infinite. The device is further provided with a light source for illuminating a detection portion of the screen surface detectable by the camera. The light source may be switched on and off according to a predeterminable ON/OFF cycle. The ON/OFF cycle is synchronized to the illumination cycle of the camera sensor, and the wetting/soiling of the screen surface may be detected by comparing the image information from the sensor of the camera when the light source is turned on and when the light source is turned off.
摘要翻译:用于检测挡风玻璃表面(特别是车辆)的润湿和/或污染的装置包括具有传感器的相机,所述传感器具有排列成阵列并适合于根据照明周期照明的多个感光像素, 并且具有将相机焦点设置为几乎无限的聚焦光学元件。 该装置还设置有用于照亮由相机可检测的屏幕表面的检测部分的光源。 可以根据可预定的开/关循环来打开和关闭光源。 ON / OFF周期与摄像机传感器的照明周期同步,并且可以通过比较当光源被接通时相机的传感器的图像信息和当光源被打开时,可以检测屏幕表面的润湿/污染 来源被关闭。
摘要:
The invention relates to a device and method for evaluating a useful signal U(t) originating from a proximity sensor. The device comprises a first recognition means (17) which changes the switching state thereof when the value (U1(t)) of a first signal produced from the useful signal exceeds a first limit value that characterizes the proximity of an object. In addition, a second recognition means (34) is provided which changes the switching state thereof from a first to a second state when the value (U(t)) of the useful signal exceeds a second limit value that characterizes the removal of an object. A decision means (32), which is connected to the first recognition means (17) and to the second recognition means (34), changes its switching state when the first recognition means (17) changes the switching state thereof from its first to a second switching state, and the second recognition means does not change the switching state thereof during a predetermined first time span (Δt1) after the switching state of the first recognition means is changed.
摘要:
The invention relates to an acceleration sensor for detecting inertia forces, in which several separable and non-miscible media are stored in a receptacle and from at least one interphase between the media. Differentiation agents are provided to distinguish dynamic changes of position of the interphase from static changes of position, and evaluation agents evaluate the dynamic changes of position for the gradual determination of acceleration. An acceleration sensor that reacts sensitively to acceleration and deceleration, but which emits no signal when the sensor is rotated away from zero-position is thus created.
摘要:
The invention relates to an apparatus for wireless optical transmission of video and/or audio information, such as television broadcasts or video recordings, with IR radiation radiated into the surrounding free space by an optical transmitter and received by one or more photo receivers. It is the object of the invention to provide means for extending the transmission range of wireless optical transmission systems and for simplifying signal processing, so that television broadcasts or video recordings can be reliably transmitted under ambient light conditions typical in residential buildings while requiring only limited additional circuitry for matching the optical transmission channel and a small number of luminescent diodes. This object is solved in that at least for the upper frequency spectrum of the video and/or audio information, the optical transmission is based on a pulse-shaped source signal, with the information represented by the temporal position of the signal edges between pulses and non-pulse periods. A simple edge detector converts the source signal into a channel pulse signal which includes a short spike-shaped channel pulse synchronous with each signal edge in the source signal. The optical receiver includes a 1:2 frequency divider for restoring from the received channel pulse signal the original shape of the pulse-shaped source signal.
摘要:
A variable electronic resistor (16), which can be varied by a control signal (Ust) at the control input (15), contains two parallel, signal paths (1 and 2) with identical components, of which one signal path carries a phase inverted input transmission signal and the other signal path carries a non phase inverted input transmission signal and which are additively joined at the output side. Each signal path contains a charge carrier channel (3) and a signal transmission stage (7) with a low impedance current input, located downstream of the output electrode (5) in the signal path of the charge carrier channel. The resistor of the charge carrier channel can be varied by a control voltage (Ust), which is common to both charge carrier channels, in a control electrode (14) of the semiconductor components (4).
摘要:
An arrangement for indicating a change in a reflective element of a radiation-permeable medium having a detection side disposed opposite the reflective element. The arrangement includes two measured sections each having a radiation source for generating radiation for transmission through the radiation-permeable medium; a sensor-active surface on the reflective element for reflecting at least a portion of the generated radiation through the detection side; and a radiation receiver for receiving the reflected radiation which has an output for producing a detection signal representing received radiation. The arrangement further includes a switch arrangement for periodically actuating respective ones of the measured sections in a successive, repeating switching sequence according to a predetermined frequency; an adjusting device for adjusting the detection signal so that, in a rest state of the sensor-active surface of each measured section, a part of the detection signal corresponding to each measured section has an average amplitude value equal to an average amplitude value of parts of the detection signal corresponding to other ones of the measured sections; a filter circuit for producing a filtered detection signal; and an evaluation device having an input for receiving the filtered detection signal and producing an output signal in dependence of a difference between parts of the filtered detection signal corresponding to respective ones of the measured sections.
摘要:
Wired into the transmission path (2) of a transmission arrangement (1) to transmit a useful signal (NS), especially an audio or data signal, that is modulated onto a carrier signal (TS), is a bandpass filter (5) whose filter quality (G) can be adjusted. An error signal circuit (9) connected to the transmission path on the output side of the bandpass filter detects missing or excessively low amplitudes of the carrier signal and produces therefrom an error frequency signal (FS) with which, by means of a characteristic curve (G=f(FS)), the quality of the bandpass filter (5) is set and thereby the bandpass filter (5) is switched, in the manner of a cross-fade, from a wide transmission bandwidth to a high voltage superelevation in order to regenerate the amplitude of the carrier signal.
摘要:
A video recorder for recording and reproducing video signals having a bandwidth with a limited upper transmission frequency, including HDTV signals. A recording signal processing circuit (14) with a first scanning circuit (10.1) for scanning the video signal to be recorded with first scanning recording pulses of a first scanning frequency that is at least equal to the limited upper transmission frequency, for providing the first recording signal (AS1), and a second scanning circuit (10.2) for scanning the video signal to be recorded with second scanning recording pulses that are displaced through half a cycle with respect to the first scanning pulses of the first scanning circuit (10.1), and having a second scanning frequency equal to the first scanning frequency, for providing the second recording signal (AS2). A recording/playback circuit (15, 16) includes recording-reproducing heads (11.1, 11.2) in close proximity to each other, for recording two recording signals (AS1, AS2) on two adjacent tracks of a magnetic tape (12), and for reading playback signals (LS1, LS2). The playback signal generating device (17 ) has a playback scanning switch (13) for alternately and successively scanning the playback signals (LS1, LS2) with playback scanning pulses, the switch (13) having a scanning frequency with pulses repeating at twice the first scanning frequency, for providing a composite playback video signal having the limited upper transmission frequency.
摘要:
A remote control transmitter contains on a circuit board (3), which is rigidly connected to the transmitter housing (1) of the remote control transmitter, a positional-deviation switch configuration (17), which in the event of an angular deviation of the circuit board (3) and thus of the remote control transmitter beyond a particular trigger angle (a.sub.o) from a particular given or instantaneously determined reference operating position generates an output signal designating the direction of the positional deviation. In a signal converter (5) of the remote control transmitter, this direction-dependent output signal is converted as a control command into a transmission signal, and emitted via a transmitter element (4) of the remote control transmitter to a remotely controlled electrical appliance. By means of swivel movements of the remote control transmitter from the wrist of the user operating the remote control transmitter, different control commands to the remotely controlled appliance are generated in this way in the remote control transmitter.