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Power supply input controller of ultrasonic Doppler switch

A technology of Doppler switch and power input, which is applied in the direction of control/regulation system, instrument, irreversible AC power input conversion to DC power output, etc. It can solve problems such as inability to achieve clarity, achieve low cost, and circuit The effect of simple structure

Inactive Publication Date: 2008-10-01
居小平
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] When the ultrasonic Doppler plate detector is used for detection, the ultrasonic Doppler plate requires different voltages for different tissues and organs of the human body (such as the heart, liver, etc.) and different blood vessels of different tissues and organs. For example, in continuous Doppler When measuring in the same way, a voltage of 0 to 140 volts is required; while in pulse Doppler measurement, a voltage of 0 to 70 volts is required, and in the switching power supply of the previous ultrasonic Doppler plate detector, only one output can be provided Therefore, the displayed image cannot achieve sufficient clarity. For this reason, it is necessary to develop a new ultrasonic Doppler switching power input controller

Method used

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  • Power supply input controller of ultrasonic Doppler switch
  • Power supply input controller of ultrasonic Doppler switch
  • Power supply input controller of ultrasonic Doppler switch

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Embodiment Construction

[0011] figure 1 Among them, point A is the sampling voltage from the sampling circuit; point B is the control voltage output from the Doppler board; point C is the mode control voltage output from the main board.

[0012] When in pulse Doppler mode, such as figure 2 As shown in (c), the mode control voltage from the motherboard is added to the switching power supply input controller C point voltage is 5 volts, so that the field effect transistor Q 1 conduction; as shown in figure (b), when the control voltage from the Doppler plate is a 12 volt pulse voltage signal, as figure 2 As shown in (a), the rectifier circuit outputs a pulse voltage of 70 volts; see attached image 3 : When in continuous Doppler mode, such as image 3 As shown in (c), the mode control voltage from the main board is added to the switching power supply input controller, and the voltage at point C is 0 volts, so that the field effect transistor Q 1 closed; similarly, if image 3 As shown in (b), wh...

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Abstract

This invention relates to a supersonic Doppler switch supply input controller, which can provide different test voltages when examining different tissue organs and blood vessels of human bodies to make the images clear enough, the control circuit includes a bleeder circuit of a three-pin voltage of a control comparator composed of a resistor R9, R10, MOS field effect transistor Q1, a resistor R3 and R8, R7 and R6, a bleeder circuit of a two-pin voltage of a control comparator composed of a serial potentiometer RV1, a resistor R1, R2 and a serial resistor R4 and a R5 and an anti-interference short circuit capacitor C1 connected between the three-pin of the comparator IC1 and the earth.

Description

technical field [0001] The invention relates to a switching power supply of an ultrasonic Doppler plate detector. Background technique [0002] When the ultrasonic Doppler plate detector is used for detection, the ultrasonic Doppler plate requires different voltages for different tissues and organs of the human body (such as the heart, liver, etc.) and different blood vessels of different tissues and organs. For example, in continuous Doppler When measuring in the same way, a voltage of 0 to 140 volts is required; while in pulse Doppler measurement, a voltage of 0 to 70 volts is required, and in the switching power supply of the previous ultrasonic Doppler plate detector, only one output can be provided Fixed voltage, therefore, the displayed image can not achieve sufficient clarity, for this reason, it is necessary to develop a new ultrasonic Doppler switching power input controller. Contents of the invention [0003] The purpose of the present invention is to provide an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/04G05F1/46
Inventor 居小平
Owner 居小平
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