CZ20004848A3 - Circuit arrangement of sensors for indication of position and velocity of moving objects - Google Patents

Abstract

Connection of sensors to indicate the position and speed of moving items include photoelectric sensor and converter (1) light on an electric current that senses a light beam from transmitters (2) and (3) and is connected to the input circuit identifying a change in beam properties (4). Follows own registration and evaluation device (5) with time axis formed today mostly by computer with appropriate software.

Description

Technical field

The invention solves the connection of sensors for positions and speeds of moving objects. By connecting the sensor according to the invention, it is possible to determine the position of the object at a certain point and at a certain point in time without contact, that is to say at a certain distance. The application determining the position of motor vehicles on the road was verified.

BACKGROUND OF THE INVENTION

The known sensor circuitry for sensing the position and velocity of moving objects based on the principle of light beam interruption is equipped with two beam transmitters, two receivers and an evaluation unit. They are therefore quite complicated and relatively difficult to install in the field. Somewhat easier to install when using these sensors in the production line.

SUMMARY OF THE INVENTION

The aforementioned drawback of the sensors for sensing the position and velocity of moving objects is eliminated by connecting the sensors for indicating the position and velocity of moving objects according to the invention, which is based on the fact that two emitted beams, ie two beams, are converted a signal (case by case by a different method that is not the subject of the invention) and this signal is fed to its own evaluation device, which recognizes whether it receives only one or two signals. This evaluation device may be based on various physical principles (which are not and are not subject of the invention). This evaluation device detects the instant of change in the properties of the received beam (eg, input signal frequency, input signal energy, input signal modulation, etc.) at the moment the moving object passes through a location defined by the geometry of the two beams. The signal is then routed to an evaluation and registration device with a timeline (consisting of a computer usually with the appropriate software capable of evaluating the time course of the monitored quantity). Due to the simpler connection of the sensors according to the invention, the detection of distant moving objects in time and space is more reliable. The actual evaluation device for changing the characteristics of the received beam can be realized mainly by software solution.

Overview of the drawings

The block diagram of the invention is shown in the drawing.

DETAILED DESCRIPTION OF THE INVENTION

In the drawing, FIG. An example of the connection of sensors for indicating the position and speed of moving objects according to the invention is shown. The photoelectric sensor and the light-to-current converter I, which senses the transmitted signal from the transmitters 2 and 3, is connected to the input of the circuit identifying the change in beam properties 4, followed by its own recording and evaluation device with timeline 5. equipment, in our particular case it consists of an IBM-compatible PC or a PDA-class computer with software evaluating the time dependence of the traffic detector occupancy rate of passing vehicles.

Industrial applicability

The device using the circuit according to the invention can be used universally wherever it is evaluated for a certain distance, i.e. contactlessly, the presence at a certain location, the position and speed of the moving objects.

Claims (3)

"PATENT CLAIMS" 1. A sensor circuit for indicating the position and velocity of moving objects according to claim 1, characterized in that the photoelectric sensor and the light-to-current converter (1) are connected to the input of a circuit identifying a change in beam properties (4) emitted by the transmitter (2) and 3 /, which is connected to its own recording and evaluation device with a timeline / 5 /, nowadays mostly made up of computers with appropriate software. 2. The connection of sensors for indicating the position and speed of moving objects according to claim 1, characterized in that the circuit identifying the change in the beam properties (4) is formed by software which performs the identification of the instant of the change in the beam properties. 3. Connection of sensors for indicating the position and speed of moving objects according to points 1 and 2, characterized in that two light beam transmitters (2) and (3), the light beam itself and the photoelectric sensor (1) are replaced by two ultrasonic wave transmitters (2) and (3), two directed ultrasonic waves and one ultrasonic sensor (1) to which the circuits (4) and (5) are connected according to items 1 and 2.