CS227616B1 - Connection of ultrasonic diagnostic apparatus circuits, especially for breeding purposes - Google Patents

Abstract

The invention relates to the connection of circuits of an ultrasonic diagnostic device, especially for breeding purposes, the essence of which is that the first inputs of comparators are connected to the output of the sawtooth voltage generator, the second inputs of which are connected to the potentiometer sliders. The outputs of the comparators are connected to the inputs of the differential circuit and to the inputs of the shaping circuits. The outputs of the shaping circuits are connected to the input of the combining circuit, the output of which is connected to the screen. The output of the differential circuit is connected via a gate to the input of the guitar and an oscillator of measuring pulses is connected to the second input of the gate. The invention can be used for breeding, or diagnostic purposes.

Description

The invention relates to circuitry of an ultrasonic diagnostic apparatus, in particular for breeding purposes.

Up to now known embodiments and wiring of diagnostic instruments for breeding purposes display echo-pulses of individual interfaces of fat, muscle, bone and the like on the screen. The scan tool is required to allow the determination of fat layer thickness, muscle depth, pregnancy identification. Fat layer and muscle thickness are determined by comparing the screen echo-pulse distance with the raster scale attached. The slope of the horizontal decomposition saw tension is adjusted so that the distance of the echo-pulse on the screen corresponds to the grid scale of the raster to which it is compared. Comparing the beginning of the echo-pulse with the raster scale is tiring and over time the error caused by operator fatigue increases.

These disadvantages are eliminated by the circuitry of the ultrasonic diagnostic apparatus, in particular for breeding purposes according to the invention, in which the first input of the first comparator and the first input of the second comparator are connected to the output of the saw voltage generator. The second comparator inputs are connected to the potentiometer runners. The output of the first comparator is connected both to the first input of the differential circuit and to the input of the first forming circuit. The output of the second comparator is connected to the second input of the differential circuit and to the input of the second forming circuit. The forming circuit outputs are connected to the merge circuit input. The merge circuit output is connected to the screen. The output of the differential circuit is connected through the gate to the counter input. The oscillator of the metering pulses is connected to the second gate input.

227 616

By engaging the circuits of the ultrasonic diagnostic apparatus of the invention, two marking pulses are produced which are displayed together with echo pulses but with 8 opposite polarity. The distance of the echo-pulse is read on the display in numerical form. This means that the device can determine the thickness of both the fat layer and the muscle, and it is also possible to indicate pregnancy.

The accompanying drawing shows an exemplary embodiment of the circuit, in which FIG. 1 is a schematic circuit diagram of FIG. 2 shows waveforms of the signals.

The connection of the ultrasonic diagnostic apparatus circuitry for breeding purposes consists of a χ saw voltage generator, the output of which is connected to the first input of the first comparator 2 and the first input of the second comparator 2 · The output of the saw voltage generator 1 is connected via amplifier 16 to screen 17. £, £ are connected to potentiometer sliders 6.2. The output of the comparator 8 is connected to the first input of the differential circuit 12 and the first input of the shaping circuit 11. The output of the comparator 2 ^e j connected to the second input rozdielof dumping circuit 12 and the input of the second shaping circuit 10. The outputs of the shaping circuits 12, 11th are connected to the input of the merge circuit 18, the output of which is connected to the screen 22. The output of the differential circuit 12 is connected via the gate 13 to the input of the counter 11. The second output of the saw voltage generator χ is connected to the drive generator χ via the trigger circuit 2. The output of driver generator 2 I ^t is connected to the ultrasonic probe and £ 2 via power detector ⁸ to the adder 18th

From the generator 1, the saw voltage po is applied after amplification in the amplifier 16 to the horizontal catching system of the screen 17. At the same time, the saw voltage priv is applied to the trigger circuit χ, which generates a pulse whose start coincides with the beginning of the saw voltage A. The excitation generator 2 is triggered. A short pulse from the excitation generator 2 is the oscillating piezoceramic transducer in the ultrasonic probe 6. The ultrasonic pulse emitted by the ultrasonic probe 6 is propagated by an environment such as a fat or mass layer, and after passing through the interfaces a reflection occurs and the reflected pulse propagates to the ultrasound probe 6. Upon its impact on piezoceramics, an electrical signal echoimpulz is energized. The echo pulse is amplified in the amplifier ^{28 by a} detector and after detection it is fed to the vertical display system ΐχ via the combining circuit 18. As a result, it is displayed on the screen of the screen 17. The saw voltage A from generator χ is applied to the first comparator inputs 2.2 · The second comparator inputs 8.2 are supplied with a direct voltage from the potentiometers 6.2 · When the saw voltage reaches the level set If there is a load voltage, the output voltage of the comparators 2, 2 will change. we get pulses B, G (Fig.2), the beginning of which corresponds to the beginning of the saw voltage A and the end · «is given by the moment of the transition of the saw voltage A by the set value of unidirectional voltage from the potentiometer runners 6,2. D given by subtracting both pulses B, C, in absolute value, i.e. it does not matter the order ,. which pulse is longer. The difference pulse D is applied to the gate 11, which transmits metering pulses to counter 14 from the oscillator during the duration of the differential pulse D corresponding to the mark difference. calculates the number of pulses that will correspond to the difference in markings in the length value and is shown in the display · Pulses B, C from comparators 2.2. ^{88 also} feed to the forming circuits 9. IQ. From the forming circuits 2, 1288 ^{, the} peak pulses E ^lead to the combining circuit 18 and are displayed on the screen shade.

Claims (1)

BACKGROUND OF THE INVENTION 227 616 Connection of ultrasonic diagnostic devices, especially for breeding purposes, consisting of a generator voltage coupled with a shaping circuit and one with an amplifier, wherein the output of the shaping circuit connected to the trigger circuit, the output of which controls the generator connected to the output on the ultrasonic probe simultaneously on the input of the amplifier with the detector, which is connected to the input of the merger circuit and the 3al circuit group, characterized in that the input of the first comparator (8) and the primary input of the second comparator (9), while the second inputs the combiners (8, 9) are connected to the potentiometer sliders (6, 7), the output of the first comparator (8) being connected, first, by the input of the differential circuit (12) and the input of the first shaping circuit (11) and the output the second comparator (9) is connected to the second input of the differential circuit (12) and the second input the shaping circuit (10), while the outputs of the shaping circuits (10, 11) are connected to the input of the merging circuit (18) whose output is connected to the screen (17) while the output of the differential circuit (12) is connected to the counter (13) to the input of the counter (14), the oscillator (15) of the meter im pulse (1) is connected to the second input (13)