KR100269178B1 - Radar Energy Radiation Control - Google Patents

Abstract

PURPOSE: An energy radiation control device of a radar is provided to improve transformer efficiency and to reduce transformer volume by installing a clock selection device at the rear of the power transformer. CONSTITUTION: An oscillator(21) generates a pulse with a determined frequency. A switch driver(22) receives the pulse and transmits a switching signal. The first switch(23) performs switching responding to the output of the switch driver(22). A transformer(24) elevates the signal voltage and outputs it. A divider(25) separates the AC(alternate current) component of the elevated pulse and transfers it to a pulse generator. An energy pulse generator(26) charges energy by inputting the AC component. A divider/pulse selector(30) divides the elevated pulse corresponding to the frequency and outputs the divided signal as trigger input pulse. The second switch(28) outputs the stored energy through an output terminal.

Description

Radar Energy Radiation Control

1 is a block diagram of a conventional radar energy radiator.

2 is a block diagram of a radar energy radiator of the present invention.

3 shows a radar energy radiating device of the present invention.

4 is a table showing the input and output relationship according to the pulse selection.

5 is a timing diagram of pulses applied to the radiation control switching element.

* Explanation of symbols for main parts of the drawings

11: Clock pulse generator 30: Pulse selector

22: drive device 23: first switching element

28: second switching element 24: power transformer

12,25: Separation Circuit (I.E) 13,26: Pulse Forming Circuit (PFN)

14,27: energy radiating device 29: pulse width control device (PWC)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling the emission of energy generated from a power supply of a pulse radar in which a transmission wave consists of a series of pulses. It relates to a device for controlling.

Conventional radar energy radiation control device is a clock pulse forming device 11 for generating a switching pulse and boosting the input voltage to energize, as shown in the block diagram of Figure 1 and the pulse formation to accumulate the output energy Device 13, an output device 14 for applying the energy to the pulse forming apparatus, and a switching element 15 for applying the energy to the output apparatus.

The conventional radar energy radiation control device configured as described above is operated in a manner of controlling the detection distance in relation to the interval of the radiation pulse and the period of the radiation pulse is determined in consideration of the round trip time of the pulse emitted to the detected object. 3KHZ is used for near object detection and 1.5KHZ is used for long distance object detection. In other words, the short-range object detector where the reflected wave arrives quickly uses a short frequency of 3KHZ and the long-range object probe determines the period of the radiation pulse based on the arrival time of the reflected wave.

The pulse is determined by the clock pulse forming apparatus 11 and the determined pulse is applied to the switching element 15 which controls the application of the energy of the output device 14 emitting the energy and at the same time accumulates in the pulse forming apparatus 13. Energy is radiated through the energy output device.

Radiation control of energy by the method is a power transformer according to the use of low frequency because the frequency of the clock pulse formed in relation to the object detection distance is used in the audible frequency band and the frequency is generated in the power transformer constituting the pulse forming apparatus There is a problem that the volume increases, the efficiency decreases due to the frequency variation, and the noise occurs due to the use of an audible frequency.

Accordingly, an object of the present invention is to install a pulse repetition frequency selector (PRF) for selecting the interval of the pulse at the rear end of the power transformer so that a constant clock pulse is formed in the power transformer and divide the pulse as necessary to solve the problem. To solve.

The configuration of the radar energy radiation control apparatus according to the present invention comprises an oscillation means 21 for determining a switching period, as shown in the block diagram of Figure 2 attached, the first switching element 23 is applied a pulse generated from the oscillation portion ), A switching element driving means 22 which alternately drives two transistors TR ₁₁ and TR _{12 in} the switching element, and a boosting step that is connected to the switching element and boosts an input voltage of an intermediate tap to form energy. A power transformer 24, a pulse shaping device 26 for accumulating the boosted energy, a separator 25 for applying energy to the pulse shaping device PFN, and a frequency requiring pulses generated from the power transformer A pulse selector 30 for selecting and dividing according to the present invention, a second switching element 28 for controlling an energy output according to the selected clock pulse, and a transistor TR ₂₂ of the switching element. It consists of the pulse width control apparatus 29 for moving.

Embodiments of the present invention configured as described above will be described in detail with reference to FIGS. 3, 4, and 5.

In order to make the period of the switching element 24 KHZ, the oscillation means 21 generates a clock pulse of 24 KHZ, and the generated pulse is applied to the first switching element driving means 22. The switching element 23 composed of two transistors TR ₁₁ and TR ₁₂ connected to the primary side terminal of the power transformer 24 has two transistor switches alternately connected by the driving unit and is connected to both ends of the power supply winding of the power transformer. Clock pulses are applied. A voltage of 48 V DC is applied to an intermediate tap connected to the primary winding of the power transformer, and the power transformer is composed of a step-up and step-down transformer to boost the voltage of the formed 24 KHZ 48 V to produce an energy of 620 V 24 KHZ, and the energy is a diode and an inductance. The energy is accumulated in the pulse forming apparatus 26 which accumulates energy by the separating circuit 25, and the energy is applied to the energy output apparatus 27 by the second switching element.

3KHZ, 2KHZ and 1.5KHZ formed by 8, 12, and 16 divisions of clock pulses of 24 KHZ generated at the tertiary side terminals of the boost and decompression transformers to drive the second switching element to output energy. The clock pulse of 3KHZ is used to detect short-range objects quickly, and the 1.5KHZ-long pulse is used for long-distance object detection considering the round trip time of the reflected wave. the clock pulse is selected according to the second switching element 28, a transistor (TR ₂₁₎ in the figure the fourth degree timing chart method to the selected trigger sink (TS) clock pulses are applied to the moment the transistor (TR ₂₁₎ which is due to the undergarment applied to the transistor (TR ₂₂₎ being in a conductive, the trigger input (TI) pulse generated by the pulse width control device 30, the second switching device 28, the moment the transistor (TR ₂₂₎ Through conduction, energy stored in the pulse forming device is radiated through the energy output device during the time that the two transistors are conducted.

The apparatus for controlling the energy radiation of the radar according to the present invention comprises a selection device for selecting a clock pulse applied to the second switching element in the rear end of the power transformer to select and divide the clock pulse as needed, the radiation control switching element The switching frequency of the power transformer is made constant by driving the power transformer, and the efficiency of the transformer is improved by increasing the stability of the power transformer. The switching frequency can be used outside the audible frequency band, thereby eliminating noise and switching frequency. There is a significant effect that the volume of the power transformer becomes smaller as is increased.

Claims (2)

An apparatus for controlling radiation of radar energy for applying accumulated energy to an output terminal by dividing a clock pulse formed in a power transformer and driving the energy radiation control means with a selected clock pulse, comprising: an oscillating means for generating a pulse of a predetermined cycle; Switching driving means for inputting the generated pulse to output a switching signal; First switching means for performing switching in response to a switching signal output from the switching driving means; A transformer for boosting a signal output by being switched to output the boosted pulse; Separating means for separating only an alternating current component from the boosted pulse and applying energy consisting of only the alternating current component to the pulse forming means; Energy pulse forming means for charging the energy by inputting energy consisting of only an alternating current component; Division and pulse selection means for dividing the boosted pulse into a signal having a frequency corresponding to selection by the user, and outputting the divided signal as a trigger input pulse; And second switching means for outputting charged energy through an output stage by performing switching in response to the trigger input pulse. 2. The radar energy emission of claim 1, wherein the clock pulse generated by the energy forming means is formed of a clock pulse having an audible frequency, and the apparatus further comprises pulse width adjusting means for adjusting the pulse width. Control unit.