CN112367064A - Ultrasonic high-voltage pulse synchronous trigger output circuit - Google Patents
Ultrasonic high-voltage pulse synchronous trigger output circuit Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0232—Monostable circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/017—Adjustment of width or dutycycle of pulses
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/033—Monostable circuits
Abstract
The invention discloses an ultrasonic high-voltage pulse synchronous trigger output circuit, which comprises a voltage division circuit: the device is generally used for converting high-voltage pulse into low-voltage pulse signal; a clamping circuit: the low-voltage power supply circuit is used for clamping an input low-voltage pulse signal to a low-voltage power supply rail; an amplifying circuit: the low-voltage pulse signal clamped to the low-voltage power supply rail is converted into a positive voltage pulse signal; a comparator circuit: the positive voltage pulse signal output by the amplifying circuit is compared with the output of the reference power circuit, and a comparator circuit is utilized; a pulse extension circuit: and the trigger monostable multivibrator chip is used for extending the fixed voltage pulse output by the comparator circuit to a fixed pulse width signal and outputting the fixed voltage pulse. The invention sets the high-voltage short-time pulse in a certain range as a positive pulse trigger signal with positive, low voltage and fixed pulse width, and can effectively carry out trigger synchronization on other instruments, such as an oscilloscope, a waveform generator, a spectrum analyzer and other ultrasonic instruments.
Description
Technical Field
The invention relates to the technical field of circuit design, in particular to an ultrasonic high-voltage pulse synchronous trigger output circuit.
Background
The excitation of an ultrasonic transducer often requires a high voltage, covering several tens of volts to thousands of volts, while other detection units or measurement instruments need to acquire this pulse over time for synchronous operation, but other instruments often cannot accept such a high voltage and pulses as short as 10ns, and therefore require a circuit to set this pulse to a low voltage (e.g., 5V), with a pulse width that is broadened to a level of 10us or even longer, in order to facilitate synchronization of the two instruments at the moment of triggering.
At present, the high voltage pulse is converted into low voltage mainly by the voltage dividing resistor and then directly used, as shown in fig. 7.
The disadvantage of the circuit of fig. 7 is that the output pulse width is the same as the input pulse width and the clamping voltage of D1, D2 is fixed without subsequent reception of synchronous triggers, especially by external instruments.
The invention aims to input high voltage in a certain range into a circuit with fixed low voltage and fixed pulse width, and can effectively solve the problems of stability of synchronous pulse and adaptation to external trigger of most instruments.
Disclosure of Invention
The invention aims to provide an ultrasonic high-voltage pulse synchronous trigger output circuit aiming at the defects of the prior art, and the circuit for inputting high voltage in a certain range into a fixed low-voltage and fixed pulse width can effectively solve the problems of synchronous pulse stability and adaptation to external trigger of most instruments.
In order to solve the technical problems, the following technical scheme is adopted:
the ultrasonic high-voltage pulse synchronous trigger output circuit comprises a voltage division circuit, a clamping circuit, an amplifying circuit, a comparator circuit and a pulse extension circuit,
the voltage division circuit: voltage is divided through a resistor of the voltage dividing circuit, and the voltage dividing circuit is used for converting the high-voltage pulse into a low-voltage pulse signal;
the clamping circuit: the low-voltage pulse signal is clamped to a low-voltage power supply rail through a group of diodes;
the amplifying circuit: the low-voltage pulse signal clamped to the low-voltage power supply rail is converted into a positive voltage pulse signal;
the comparator circuit: the comparator circuit is used for comparing the positive voltage pulse signal output by the amplifying circuit with the output of the reference power supply circuit, if the positive voltage pulse signal output by the amplifying circuit is greater than the pulse signal output by the reference power supply circuit, a fixed voltage pulse is output, otherwise no pulse signal is output;
the pulse extension circuit: and the trigger monostable multivibrator chip is used for extending the fixed voltage pulse output by the comparator circuit to a fixed pulse width signal and outputting the fixed voltage pulse.
Further, the high voltage pulse includes a positive high voltage pulse and a negative high voltage pulse,
the positive high-voltage pulse outputs a positive pulse signal through the action of a voltage division circuit and a clamping circuit;
the negative high-voltage pulse outputs a negative pulse signal under the action of the voltage division circuit and the clamping circuit.
Further, the amplifying circuit comprises a reverse amplifying circuit and a forward amplifying circuit,
when the input pulse is a positive high-voltage pulse, converting the pulse signal clamped to the low-voltage power supply rail into a positive voltage pulse signal through a forward amplifying circuit;
when the input pulse is negative high-voltage pulse, the reverse amplification circuit is used for converting the low-voltage pulse signal clamped to the low-voltage power supply rail into a positive voltage pulse signal.
Further, when the input pulse is a positive high-voltage pulse or a negative high-voltage pulse, the pulse signal clamped on the low-voltage power supply rail is converted into a positive voltage pulse signal through the amplifying circuit, and an OR gate circuit is arranged between the output of the comparator circuit of the negative high-voltage pulse path and the output of the comparator circuit of the positive high-voltage pulse path.
Further, the voltage dividing circuit comprises a resistor R3, a resistor R2, a resistor R4 and a resistor R5, one end of the resistor R3 is connected with the resistor R2 and the socket E in series, the other end of the resistor R3 is grounded, the resistor R2 is connected with the resistor R4 and the resistor R5 in parallel, one ends of the resistor R4 and the resistor R5 are grounded, and the other ends of the resistor R4 and the resistor R5 are connected with the clamping circuit.
Further, the clamping circuit comprises a first Schottky diode and a second Schottky diode, the first Schottky diode and the second Schottky diode are connected in parallel, the positive end of the first Schottky diode is connected with the negative end of the voltage U, the negative end of the first Schottky diode is connected with the voltage dividing circuit, the positive end of the second Schottky diode is connected with the voltage dividing circuit, and the negative end of the first Schottky diode is connected with the positive end of the voltage U.
Further, the amplifying circuit comprises an operational amplifier U, and a 1 pin of the operational amplifier U is respectively connected with a capacitor C16 and a capacitor R20; a 2 pin of the operational amplifier U is respectively connected with a resistor R21, a capacitor C16 and a R20, the resistor R21 is respectively connected with a resistor R23 and a resistor R24, and the resistor R23 and the resistor R24 are respectively grounded; a 3 pin of the operational amplifier U is connected with a resistor R25, and the resistor R25 is grounded; the 4 pins of the operational amplifier U are connected with a capacitor C18 and a capacitor C19 respectively, and the other ends of the capacitor C18 and the capacitor C19 are grounded respectively; a 5 pin of the operational amplifier U is respectively connected with a resistor R26 and a capacitor C22, the other end of the resistor R26 is connected with a capacitor C21, the capacitor C21 is grounded, and the other end of the capacitor C22 is grounded; a resistor R22 is connected to a pin 6 of the operational amplifier U, a resistor R22 is connected with a resistor R27, and the resistor R27 is grounded; a 7 pin of the operational amplifier U is connected with a capacitor C15 and a capacitor C17, and the other ends of the capacitor C15 and the capacitor C17 are grounded; and the pin 9 of the operational amplifier U is grounded.
Further, the comparator circuit comprises a voltage comparator U6, wherein a pin 1, a pin 8, a pin 9 and a pin 16 of the voltage comparator U6 are respectively connected with a capacitor C43, a capacitor C64, a capacitor C65 and a capacitor C66, and the other ends of the capacitor C43, the capacitor C64, the capacitor C65 and the capacitor C66 are respectively grounded; the pin 2, the pin 7, the pin 10 and the pin 15 of the voltage comparator U6 are connected with the amplifying circuit, the pin 3 of the voltage comparator U6 is grounded, the pin 4 of the voltage comparator U6 is connected with a resistor R52, and the other end of the resistor R52 is grounded; a pin 5 of the voltage comparator U6 is connected with a resistor R53, and the other end of the resistor R53 is grounded; pin 6 of the voltage comparator U6 is connected with the negative end of the voltage U; a pin 11 of the voltage comparator U6 is connected with a capacitor C44, and the other end of the capacitor C44 is grounded; a pin 12 of the voltage comparator U6 is connected with a resistor R54, and the other end of the resistor R54 is grounded; a pin 13 of the voltage comparator U6 is connected with a resistor R55, and the other end of the resistor R55 is grounded; and a pin 14 of the voltage comparator U6 is connected with the positive terminal of the voltage U.
Further, the comparator circuit further comprises a voltage comparator U7, a pin 2 of the voltage comparator U7 is connected with a resistor R56, a capacitor C50 and a capacitor C49 respectively, the other end of the resistor R56 is connected with a resistor R59, and the other ends of the capacitor C50 and the capacitor C49 are grounded; the pin 3 of the voltage comparator U7 is respectively connected with the resistor R56 and the resistor R59, and the resistor R59 is grounded; a pin 6 of the voltage comparator U7 is connected with a resistor R57, the other end of the resistor R57 is connected with a resistor R58 and a capacitor C51 respectively, and the other ends of the resistor R58 and the capacitor C51 are grounded;
further, the pulse extension circuit comprises a trigger monostable multivibrator chip U, and a pin 1, a pin 8 and a pin 9 of the trigger monostable multivibrator chip U are grounded; a pin 2 of the triggering monostable multivibrator chip U is connected with the comparator circuit; a pin 3 of the triggering monostable multivibrator chip U is connected with the positive terminal of the voltage U; a pin 5 of the trigger monostable multivibrator chip U is connected with a resistor R65, the resistor R65 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 6 of the trigger monostable multivibrator chip U is connected with a capacitor C58, the capacitor C58 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 7 of the trigger monostable multivibrator chip U is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 10 of the trigger monostable multivibrator chip U is connected with the comparator circuit; a pin 11 of the trigger monostable multivibrator chip U is connected with a resistor R63, and the resistor R63 is connected with the positive end of a voltage U; a pin 13 of the trigger monostable multivibrator chip U is respectively connected with a resistor R63 and a resistor R64, the resistor R63 is connected with the positive end of a voltage U, a pin 14 of the trigger monostable multivibrator chip U is connected with a capacitor C57, the capacitor C57 is connected with a resistor R62, and the resistor R62 is connected with the positive end of the voltage U; a pin 15 of the trigger monostable multivibrator chip U is connected with a resistor R62, and the resistor R62 is connected with the positive end of a voltage U; and a pin 16 of the trigger monostable multivibrator chip U is respectively connected with the positive terminal of the voltage U and a capacitor C56, and the other end of the capacitor C56 is grounded.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
the invention relates to an ultrasonic high-voltage pulse synchronous trigger output circuit, which is characterized in that positive high-voltage or negative high-voltage short-time pulses in a certain range are defined as positive pulse trigger signals with positive and low voltages and fixed pulse width, and can be effectively connected with other instruments for triggering and synchronizing, such as oscilloscopes, waveform generators, spectrum analyzers and other ultrasonic instruments.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram of a working principle of negative high-voltage pulse input in an ultrasonic high-voltage pulse synchronous trigger output circuit in embodiment 1 of the present invention;
fig. 2 is a schematic view of the working principle of negative high-voltage pulse input or positive high-voltage pulse input in the ultrasonic high-voltage pulse synchronous trigger output circuit in embodiment 2 of the present invention;
FIG. 3 is a schematic circuit diagram of a voltage divider circuit and a clamp circuit according to the present invention;
FIG. 4 is a schematic circuit diagram of an amplifier circuit of the present invention;
FIG. 5 is a circuit schematic of a comparator circuit of the present invention;
FIG. 6 is a schematic circuit diagram of a pulse stretching circuit according to the present invention;
fig. 7 is a schematic circuit diagram of a prior art synchronous trigger output circuit in the background of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-6, the ultrasonic high-voltage pulse synchronous trigger output circuit comprises a voltage division circuit, a clamping circuit, an amplifying circuit, a comparator circuit and a pulse extension circuit,
the voltage division circuit: voltage is divided through a resistor of the voltage dividing circuit, and the voltage dividing circuit is used for converting the high-voltage pulse into a low-voltage pulse signal;
the clamping circuit: the low-voltage pulse signal is clamped to a low-voltage power supply rail through a group of diodes;
the amplifying circuit: the low-voltage pulse signal clamped to the low-voltage power supply rail is converted into a positive voltage pulse signal;
the comparator circuit: the comparator circuit is used for comparing the positive voltage pulse signal output by the amplifying circuit with the output of the reference power supply circuit, if the positive voltage pulse signal output by the amplifying circuit is greater than the pulse signal output by the reference power supply circuit, a fixed voltage pulse is output, otherwise no pulse signal is output;
the pulse extension circuit: and the trigger monostable multivibrator chip is used for extending the fixed voltage pulse output by the comparator circuit to a fixed pulse width signal and outputting the fixed voltage pulse.
The high voltage pulse comprises a positive high voltage pulse and a negative high voltage pulse, and further, the amplifying circuit comprises a reverse amplifying circuit and a forward amplifying circuit. The positive high-voltage pulse outputs a positive pulse signal through the action of a voltage division circuit and a clamping circuit; the negative high-voltage pulse outputs a negative pulse signal under the action of the voltage division circuit and the clamping circuit.
The ultrasonic high-voltage pulse synchronous trigger output circuit scheme of the invention sets positive high-voltage or negative high-voltage short-time pulse in a certain range as a positive pulse trigger signal with positive, low voltage and fixed pulse width, and can effectively carry out trigger synchronization on other instruments, such as an oscilloscope, a waveform generator, a spectrum analyzer and other ultrasonic instruments.
Specifically, 1 or more groups can be arranged in the whole ultrasonic high-voltage pulse synchronous trigger output circuit, and four groups are arranged in the drawing. The following of the invention is explained for one group.
Referring to fig. 3, in particular, the voltage dividing circuit and the clamping circuit are provided in four groups, and the present invention is structurally explained with respect to the uppermost socket E1, the resistor R4 and the schottky diode D4 in fig. 3.
Specifically, the voltage dividing circuit comprises a resistor R3, a resistor R2, a resistor R4 and a resistor R5, one end of the resistor R3 is connected with the resistor R2 and the socket E in series, the other end of the resistor R3 is grounded, the resistor R2 is connected with the resistor R4 and the resistor R5 in parallel, one ends of the resistor R4 and the resistor R5 are grounded, and the other ends of the resistor R4 and the resistor R5 are connected with the clamping circuit.
Referring to fig. 3, in particular, the clamping circuit includes a first schottky diode and a second schottky diode, the first schottky diode and the second schottky diode are connected in parallel, a positive terminal of the first schottky diode is connected to a negative terminal of a voltage U, a negative terminal of the first schottky diode is connected to the voltage dividing circuit, a positive terminal of the second schottky diode is connected to the voltage dividing circuit, and a negative terminal of the first schottky diode is connected to a positive terminal of the voltage U.
Referring to fig. 4, specifically, the amplifying circuit is provided with four sets, and the present invention is structurally explained with respect to the uppermost operational amplifier U2 in fig. 4.
The amplifying circuit comprises an operational amplifier U, wherein a pin 1 of the operational amplifier U is respectively connected with a capacitor C16 and a capacitor R20; a 2 pin of the operational amplifier U is respectively connected with a resistor R21, a capacitor C16 and a R20, the resistor R21 is respectively connected with a resistor R23 and a resistor R24, and the resistor R23 and the resistor R24 are respectively grounded; a 3 pin of the operational amplifier U is connected with a resistor R25, and the resistor R25 is grounded; the 4 pins of the operational amplifier U are connected with a capacitor C18 and a capacitor C19 respectively, and the other ends of the capacitor C18 and the capacitor C19 are grounded respectively; a 5 pin of the operational amplifier U is respectively connected with a resistor R26 and a capacitor C22, the other end of the resistor R26 is connected with a capacitor C21, the capacitor C21 is grounded, and the other end of the capacitor C22 is grounded; a resistor R22 is connected to a pin 6 of the operational amplifier U, a resistor R22 is connected with a resistor R27, and the resistor R27 is grounded; a 7 pin of the operational amplifier U is connected with a capacitor C15 and a capacitor C17, and the other ends of the capacitor C15 and the capacitor C17 are grounded; and the pin 9 of the operational amplifier U is grounded.
Referring to fig. 5, in particular, the comparator circuit includes a voltage comparator U6, a capacitor C43, a capacitor C64, a capacitor C65 and a capacitor C66 are connected to pin 1, pin 8, pin 9 and pin 16 of the voltage comparator U6, respectively, and the other ends of the capacitor C43, the capacitor C64, the capacitor C65 and the capacitor C66 are grounded, respectively; the pin 2, the pin 7, the pin 10 and the pin 15 of the voltage comparator U6 are connected with the amplifying circuit, the pin 3 of the voltage comparator U6 is grounded, the pin 4 of the voltage comparator U6 is connected with a resistor R52, and the other end of the resistor R52 is grounded; a pin 5 of the voltage comparator U6 is connected with a resistor R53, and the other end of the resistor R53 is grounded; pin 6 of the voltage comparator U6 is connected with the negative end of the voltage U; a pin 11 of the voltage comparator U6 is connected with a capacitor C44, and the other end of the capacitor C44 is grounded; a pin 12 of the voltage comparator U6 is connected with a resistor R54, and the other end of the resistor R54 is grounded; a pin 13 of the voltage comparator U6 is connected with a resistor R55, and the other end of the resistor R55 is grounded; and a pin 14 of the voltage comparator U6 is connected with the positive terminal of the voltage U.
Referring to fig. 5, in particular, the comparator circuit further includes a voltage comparator U7, the pin 2 of the voltage comparator U7 is connected with a resistor R56, a capacitor C50 and a capacitor C49 respectively, the other end of the resistor R56 is connected with a resistor R59, and the other ends of the capacitor C50 and the capacitor C49 are grounded; the pin 3 of the voltage comparator U7 is respectively connected with the resistor R56 and the resistor R59, and the resistor R59 is grounded; the pin 6 of the voltage comparator U7 is connected with a resistor R57, the other end of the resistor R57 is connected with a resistor R58 and a capacitor C51 respectively, and the other ends of the resistor R58 and the capacitor C51 are grounded.
Referring to fig. 6, in particular, the pulse stretching circuit includes a trigger monostable multivibrator chip U whose pins 1, 8 and 9 are grounded; a pin 2 of the triggering monostable multivibrator chip U is connected with the comparator circuit; a pin 3 of the triggering monostable multivibrator chip U is connected with the positive terminal of the voltage U; a pin 5 of the trigger monostable multivibrator chip U is connected with a resistor R65, the resistor R65 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 6 of the trigger monostable multivibrator chip U is connected with a capacitor C58, the capacitor C58 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 7 of the trigger monostable multivibrator chip U is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 10 of the trigger monostable multivibrator chip U is connected with the comparator circuit; a pin 11 of the trigger monostable multivibrator chip U is connected with a resistor R63, and the resistor R63 is connected with the positive end of a voltage U; a pin 13 of the trigger monostable multivibrator chip U is respectively connected with a resistor R63 and a resistor R64, the resistor R63 is connected with the positive end of a voltage U, a pin 14 of the trigger monostable multivibrator chip U is connected with a capacitor C57, the capacitor C57 is connected with a resistor R62, and the resistor R62 is connected with the positive end of the voltage U; a pin 15 of the trigger monostable multivibrator chip U is connected with a resistor R62, and the resistor R62 is connected with the positive end of a voltage U; and a pin 16 of the trigger monostable multivibrator chip U is respectively connected with the positive terminal of the voltage U and a capacitor C56, and the other end of the capacitor C56 is grounded.
Example 1
Referring to fig. 1, as embodiment 1 of the present invention, when an input pulse is a negative high-voltage pulse, a pulse signal clamped to a low-voltage power supply rail is converted into a positive voltage pulse signal by an inverting amplifier circuit.
Example 2
Referring to fig. 2, as embodiment 1 of the present invention, when the input pulse is a negative high-voltage pulse or a positive high-voltage pulse, the low-voltage pulse signal clamped to the low-voltage power supply rail is converted into a positive-voltage pulse signal by the reverse amplification circuit or the forward amplification circuit. In this embodiment, the output pulse width is adjustable by adjusting the capacitance value of the retriggerable monostable multivibrator.
Example 3
Referring to fig. 2, as embodiment 3 of the present invention, on the basis of embodiment 2, when the input pulse is a positive high-voltage pulse or a negative high-voltage pulse, when the pulse signal clamped to the low-voltage power supply rail is converted into a positive voltage pulse signal by the amplification circuit, the comparator circuit output of the negative high-voltage pulse path and the comparator circuit output of the positive high-voltage pulse path are provided with an or gate circuit. The purpose of the or gate is to sometimes excite the ultrasound with positive pulses, and when there are positive pulses, amplify it in the positive direction and compare it. When the negative pulse is generated, the negative pulse is amplified reversely to be a positive signal and then compared. Therefore, no matter the high-voltage positive pulse or the high-voltage negative pulse exists, the positive amplification circuit can identify and output the low-voltage synchronous pulse.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (10)
1. The ultrasonic high-voltage pulse synchronous trigger output circuit comprises a voltage division circuit, a clamping circuit, an amplifying circuit, a comparator circuit and a pulse extension circuit,
the voltage division circuit: voltage is divided through a resistor of the voltage dividing circuit, and the voltage dividing circuit is used for converting the high-voltage pulse into a low-voltage pulse signal;
the clamping circuit: the low-voltage pulse signal is clamped to a low-voltage power supply rail through a group of diodes;
the amplifying circuit: the low-voltage pulse signal clamped to the low-voltage power supply rail is converted into a positive voltage pulse signal;
the comparator circuit: the comparator circuit is used for comparing the positive voltage pulse signal output by the amplifying circuit with the output of the reference power supply circuit, if the positive voltage pulse signal output by the amplifying circuit is greater than the pulse signal output by the reference power supply circuit, a fixed voltage pulse is output, otherwise no pulse signal is output;
the pulse extension circuit: and the trigger monostable multivibrator chip is used for extending the fixed voltage pulse output by the comparator circuit to a fixed pulse width signal and outputting the fixed voltage pulse.
2. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 1, characterized in that: the high voltage pulses comprise positive high voltage pulses and negative high voltage pulses,
the positive high-voltage pulse outputs a positive pulse signal through the action of a voltage division circuit and a clamping circuit;
the negative high-voltage pulse outputs a negative pulse signal under the action of the voltage division circuit and the clamping circuit.
3. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 2, characterized in that: the amplifying circuit comprises a reverse amplifying circuit and a forward amplifying circuit,
when the input pulse is a positive high-voltage pulse, converting the pulse signal clamped to the low-voltage power supply rail into a positive voltage pulse signal through a forward amplifying circuit;
when the input pulse is negative high-voltage pulse, the reverse amplification circuit is used for converting the low-voltage pulse signal clamped to the low-voltage power supply rail into a positive voltage pulse signal.
4. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 3, characterized in that: further, when the input pulse is a positive high-voltage pulse or a negative high-voltage pulse, the pulse signal clamped on the low-voltage power supply rail is converted into a positive voltage pulse signal through the amplifying circuit, and an OR gate circuit is arranged between the output of the comparator circuit of the negative high-voltage pulse path and the output of the comparator circuit of the positive high-voltage pulse path.
5. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 1, characterized in that: the voltage division circuit comprises a resistor R3, a resistor R2, a resistor R4 and a resistor R5, one end of the resistor R3 is connected with the resistor R2 and the socket E in series, the other end of the resistor R3 is grounded, the resistor R2 is connected with the resistor R4 and the resistor R5 in parallel, one ends of the resistor R4 and the resistor R5 are grounded, and the other ends of the resistor R4 and the resistor R5 are connected with the clamping circuit.
6. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 5, characterized in that: the clamping circuit comprises a first Schottky diode and a second Schottky diode, the first Schottky diode and the second Schottky diode are connected in parallel, the positive end of the first Schottky diode is connected with the negative end of a voltage U, the negative end of the first Schottky diode is connected with the voltage dividing circuit, the positive end of the second Schottky diode is connected with the voltage dividing circuit, and the negative end of the first Schottky diode is connected with the positive end of the voltage U.
7. The ultrasonic high-voltage pulse synchronous trigger output circuit of claim 6, wherein: the amplifying circuit comprises an operational amplifier U, wherein a pin 1 of the operational amplifier U is respectively connected with a capacitor C16 and a capacitor R20; a 2 pin of the operational amplifier U is respectively connected with a resistor R21, a capacitor C16 and a R20, the resistor R21 is respectively connected with a resistor R23 and a resistor R24, and the resistor R23 and the resistor R24 are respectively grounded; a 3 pin of the operational amplifier U is connected with a resistor R25, and the resistor R25 is grounded; the 4 pins of the operational amplifier U are connected with a capacitor C18 and a capacitor C19 respectively, and the other ends of the capacitor C18 and the capacitor C19 are grounded respectively; a 5 pin of the operational amplifier U is respectively connected with a resistor R26 and a capacitor C22, the other end of the resistor R26 is connected with a capacitor C21, the capacitor C21 is grounded, and the other end of the capacitor C22 is grounded; a resistor R22 is connected to a pin 6 of the operational amplifier U, a resistor R22 is connected with a resistor R27, and the resistor R27 is grounded; a 7 pin of the operational amplifier U is connected with a capacitor C15 and a capacitor C17, and the other ends of the capacitor C15 and the capacitor C17 are grounded; and the pin 9 of the operational amplifier U is grounded.
8. The ultrasonic high-voltage pulse synchronous trigger output circuit according to claim 7, characterized in that: the comparator circuit comprises a voltage comparator U6, wherein a pin 1, a pin 8, a pin 9 and a pin 16 of the voltage comparator U6 are respectively connected with a capacitor C43, a capacitor C64, a capacitor C65 and a capacitor C66, and the other ends of the capacitor C43, the capacitor C64, the capacitor C65 and the capacitor C66 are respectively grounded; the pin 2, the pin 7, the pin 10 and the pin 15 of the voltage comparator U6 are connected with the amplifying circuit, the pin 3 of the voltage comparator U6 is grounded, the pin 4 of the voltage comparator U6 is connected with a resistor R52, and the other end of the resistor R52 is grounded; a pin 5 of the voltage comparator U6 is connected with a resistor R53, and the other end of the resistor R53 is grounded; pin 6 of the voltage comparator U6 is connected with the negative end of the voltage U; a pin 11 of the voltage comparator U6 is connected with a capacitor C44, and the other end of the capacitor C44 is grounded; a pin 12 of the voltage comparator U6 is connected with a resistor R54, and the other end of the resistor R54 is grounded; a pin 13 of the voltage comparator U6 is connected with a resistor R55, and the other end of the resistor R55 is grounded; and a pin 14 of the voltage comparator U6 is connected with the positive terminal of the voltage U.
9. The ultrasonic high-voltage pulse synchronous trigger output circuit of claim 8, wherein: the comparator circuit further comprises a voltage comparator U7, a pin 2 of the voltage comparator U7 is connected with a resistor R56, a capacitor C50 and a capacitor C49 respectively, the other end of the resistor R56 is connected with a resistor R59, and the other ends of the capacitor C50 and the capacitor C49 are grounded; the pin 3 of the voltage comparator U7 is respectively connected with the resistor R56 and the resistor R59, and the resistor R59 is grounded; the pin 6 of the voltage comparator U7 is connected with a resistor R57, the other end of the resistor R57 is connected with a resistor R58 and a capacitor C51 respectively, and the other ends of the resistor R58 and the capacitor C51 are grounded.
10. The ultrasonic high-voltage pulse synchronous trigger output circuit of claim 8, wherein: the pulse extension circuit comprises a trigger monostable multivibrator chip U, wherein a pin 1, a pin 8 and a pin 9 of the trigger monostable multivibrator chip U are grounded; a pin 2 of the triggering monostable multivibrator chip U is connected with the comparator circuit; a pin 3 of the triggering monostable multivibrator chip U is connected with the positive terminal of the voltage U; a pin 5 of the trigger monostable multivibrator chip U is connected with a resistor R65, the resistor R65 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 6 of the trigger monostable multivibrator chip U is connected with a capacitor C58, the capacitor C58 is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 7 of the trigger monostable multivibrator chip U is connected with a resistor R60, and the resistor R60 is connected with the positive end of a voltage U; a pin 10 of the trigger monostable multivibrator chip U is connected with the comparator circuit; a pin 11 of the trigger monostable multivibrator chip U is connected with a resistor R63, and the resistor R63 is connected with the positive end of a voltage U; a pin 13 of the trigger monostable multivibrator chip U is respectively connected with a resistor R63 and a resistor R64, the resistor R63 is connected with the positive end of a voltage U, a pin 14 of the trigger monostable multivibrator chip U is connected with a capacitor C57, the capacitor C57 is connected with a resistor R62, and the resistor R62 is connected with the positive end of the voltage U; a pin 15 of the trigger monostable multivibrator chip U is connected with a resistor R62, and the resistor R62 is connected with the positive end of a voltage U; and a pin 16 of the trigger monostable multivibrator chip U is respectively connected with the positive terminal of the voltage U and a capacitor C56, and the other end of the capacitor C56 is grounded.
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