CN209767487U - triangular wave generating device and system - Google Patents
triangular wave generating device and system Download PDFInfo
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- CN209767487U CN209767487U CN201920521344.5U CN201920521344U CN209767487U CN 209767487 U CN209767487 U CN 209767487U CN 201920521344 U CN201920521344 U CN 201920521344U CN 209767487 U CN209767487 U CN 209767487U
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Abstract
The utility model relates to a triangular wave produces device and system, pulse signal source output data pulse signal to data pulse preprocessing module, data pulse preprocessing module is to data pulse signal shaping to solve the overshoot and the pulse deformation problem that data pulse signal produced in the transmission, make the pulse waveform of data pulse signal after the shaping stable, balanced. The phase shift delay module respectively outputs a first phase signal and a second phase signal to the deformation generation module according to the shaped data pulse signal so that the deformation generation module outputs triangular waves. The phase shift delay module can also stabilize the pulse width and the phase of the triangular wave so as to solve the problems of unstable pulse width, unstable phase and poor amplitude consistency of the triangular wave. Based on the method, the quality problems of poor waveform, large amplitude difference, drift of time points and the like in the triangular wave obtained by data pulse signal deformation are solved, and the pulse waveform quality of the triangular wave is improved.
Description
Technical Field
the utility model relates to a wave form modulation technology field especially relates to triangle wave produces device and system.
Background
Signal waveforms in the field of electronic circuit signals include sinusoidal and non-sinusoidal waveforms. Non-sinusoidal waves are also called pulse waves, and common pulse waves include square waves, rectangular waves, triangular waves and the like. Generally, a pulse wave can be generated by a signal generator, but the pulse wave generated by the signal generator often has the problems of poor signal quality, difficult control and the like. Therefore, to obtain a desired output waveform, the pulses generated by the signal generator are modulated.
generally, the pulse signal is modulated by an integrating circuit, a gate circuit, an operational amplifier, or the like to obtain a triangular wave signal. Taking the pulse signal as the data pulse signal as an example, the data pulse signal is usually subjected to triangular wave transformation by using an exclusive-or gate circuit or a nand gate circuit. However, when the rising edge and the falling edge of the data pulse signal are slow, or when the superimposed noise is large, the triangular wave pulse is easily lost or even lost at all. Therefore, it is common practice in the conventional art to use an exclusive or nor device with a suitable flip speed to solve the problem that the triangular wave pulse is lost or even lost at all. However, no matter what kind of xor gate device or nand gate device is selected, the quality problems of poor waveform, large amplitude difference, drift of time point and the like still exist in the obtained triangular wave by using the xor gate circuit or the nand gate circuit to perform triangular wave deformation processing on the data pulse signal.
SUMMERY OF THE UTILITY MODEL
therefore, it is necessary to provide a triangular wave generating device and system for solving the quality problems of the obtained triangular wave, such as poor waveform, large amplitude difference, time drift, etc., when the data pulse signal is subjected to triangular wave deformation processing by using an exclusive-or gate circuit or a nand gate circuit.
The utility model provides a triangular wave generating device, which comprises a data pulse preprocessing module, a phase shift phase delay module and a deformation generating module;
The data pulse preprocessing module is used for accessing a data pulse signal and shaping the data pulse signal, and is also used for transmitting the shaped data pulse signal to the phase shift delay module;
The phase shifting delay module is used for outputting a first phase signal to a first input end of the deformation generation module according to the shaped data pulse signal, the phase shifting delay module is used for outputting a second phase signal to a second input end of the deformation generation module according to the shaped data pulse signal, and a phase difference exists between the first phase signal and the second phase signal;
the deformation generation module is used for outputting triangular waves at the output end of the deformation generation module according to the first phase signals and the second phase signals.
the triangular wave generating device shapes the data pulse signal through the data pulse preprocessing module so as to solve the problems of overshoot and pulse deformation generated in the transmission of the data pulse signal and stabilize and balance the pulse waveform of the shaped data pulse signal. Furthermore, the phase shift delay module respectively outputs a first phase signal and a second phase signal to the deformation generation module according to the shaped data pulse signal, so that the deformation generation module outputs a triangular wave. The phase shift delay module can also stabilize the pulse width and the phase of the triangular wave according to the phase difference between the first phase signal and the second phase signal, so as to solve the problems of unstable pulse width, unstable phase and poor amplitude consistency of the triangular wave. Based on the method, the quality problems of poor waveform, large amplitude difference, drift of time points and the like in the triangular wave obtained by data pulse signal deformation are solved, and the pulse waveform quality of the triangular wave is improved.
In one embodiment, the data pulse preprocessing module comprises an isolation direct current circuit, a bias circuit and a first buffer amplifying circuit;
The input end of the isolation direct current circuit is used for accessing a data pulse signal, and the output end of the isolation direct current circuit is respectively connected with the input end of the first cache amplifying circuit and the bias circuit;
The output end of the first buffer amplifying circuit is used for outputting the shaped data pulse signal.
In one embodiment, the isolated dc circuit includes a dc blocking capacitor.
in one embodiment, the bias circuit comprises a first clamping resistor, a second clamping resistor and a diode;
The anode of the diode is connected with the output end of the isolation direct current circuit, and the cathode of the diode is respectively connected with the first end of the first clamping resistor and the first end of the second clamping resistor;
The second end of the first clamping resistor is used for switching in a logic high level, and the second end of the second clamping resistor is used for grounding.
In one embodiment, the bias circuit further comprises a first filter capacitor;
The first filter capacitor is connected in parallel to the first end and the second end of the second clamping resistor.
in one embodiment, the first cache amplifying circuit comprises a first exclusive-or gate circuit;
One input end of the first exclusive-or gate circuit is an input end of the first cache amplifying circuit, the other input end of the first exclusive-or gate circuit is used for grounding, and the output end of the first exclusive-or gate circuit is an output end of the first cache amplifying circuit.
In one embodiment, the device further comprises a second filter capacitor;
The second filter capacitor is connected in parallel with the input end and the output end of the first cache amplifying circuit.
In one embodiment, the phase shift delay module comprises a first delay circuit and a second buffer amplifying circuit;
the input end of the first delay circuit is used for accessing the shaped data pulse signal, and the output end of the first delay circuit is connected with the input end of the second cache amplifying circuit;
The output end of the second cache amplifying circuit is used for outputting a first phase signal;
The second phase signal is a shaped data pulse signal.
in one embodiment, the first delay circuit comprises a first delay resistor and a first delay capacitor;
One end of the first delay resistor is an input end of the first delay circuit, the other end of the first delay resistor is an output end of the first delay circuit, and the other end of the first delay resistor is grounded through the first delay capacitor.
In one embodiment, the second cache amplifying circuit comprises a second exclusive-or gate circuit;
one input end of the second exclusive-or gate circuit is the input end of the second cache amplifying circuit, the other input end of the second exclusive-or gate circuit is used for grounding, and the output end of the second exclusive-or gate circuit is the output end of the second cache amplifying circuit.
in one embodiment, the phase shift delay module comprises a second delay circuit, a third buffer amplifying circuit and a fourth buffer amplifying circuit;
the input end of the second delay circuit is used for accessing the shaped data pulse signal, and the output end of the second delay circuit is connected with the input end of the third cache amplifying circuit;
the output end of the third cache amplifying circuit is used for outputting a first phase signal;
The input end of the fourth cache amplifying circuit is used for accessing the shaped data pulse signal, and the output end of the fourth cache amplifying circuit is used for outputting a second phase signal.
in one embodiment, the second delay circuit comprises a second delay resistor and a second delay capacitor;
One end of the second delay resistor is an input end of the second delay circuit, the other end of the second delay resistor is an output end of the second delay circuit, and the other end of the second delay resistor is grounded through the second delay capacitor.
in one embodiment, the third cache amplifying circuit comprises a third exclusive-or gate circuit;
One input end of the third exclusive-OR gate circuit is the input end of the third cache amplifying circuit, the other input end of the third exclusive-OR gate circuit is used for grounding, and the output end of the third exclusive-OR gate circuit is the output end of the third cache amplifying circuit.
in one embodiment, the fourth cache amplifying circuit comprises a fourth exclusive-or gate circuit;
One input end of the fourth exclusive-or gate circuit is an input end of the fourth cache amplifying circuit, the other input end of the fourth exclusive-or gate circuit is used for grounding, and the output end of the fourth exclusive-or gate circuit is an output end of the fourth cache amplifying circuit.
in one embodiment, the deformation generation module comprises a fifth exclusive-or gate;
One input end of the fifth exclusive-or gate circuit is a first input end of the deformation generation module, the other input end of the fifth exclusive-or gate circuit is a second input end of the deformation generation module, and the output end of the fifth exclusive-or gate circuit is an output end of the deformation generation module.
in one embodiment, the deformation generation module comprises a NAND gate;
one input end of the NAND gate circuit is a first input end of the deformation generation module, the other input end of the NAND gate circuit is a second input end of the deformation generation module, and the output end of the NAND gate circuit is an output end of the deformation generation module.
the utility model also provides a triangular wave generating system, which comprises a pulse signal source and a triangular wave generating device;
the pulse signal source is used for outputting a data pulse signal;
The triangular wave generating device comprises a data pulse preprocessing module, a phase shift delay module and a deformation generating module;
the data pulse preprocessing module is used for accessing a data pulse signal and shaping the data pulse signal, and is also used for transmitting the shaped data pulse signal to the phase shift delay module;
The phase shifting delay module is used for outputting a first phase signal to a first input end of the deformation generation module according to the shaped data pulse signal, the phase shifting delay module is used for outputting a second phase signal to a second input end of the deformation generation module according to the shaped data pulse signal, and a phase difference exists between the first phase signal and the second phase signal;
the deformation generation module is used for outputting triangular waves at the output end of the deformation generation module according to the first phase signals and the second phase signals.
in the triangular wave generation system, the pulse signal source outputs the data pulse signal to the data pulse preprocessing module, and the data pulse preprocessing module shapes the data pulse signal so as to solve the problems of overshoot and pulse deformation generated in the transmission of the data pulse signal and stabilize and balance the pulse waveform of the shaped data pulse signal. Furthermore, the phase shift delay module respectively outputs a first phase signal and a second phase signal to the deformation generation module according to the shaped data pulse signal, so that the deformation generation module outputs a triangular wave. The phase shift delay module can also stabilize the pulse width and the phase of the triangular wave according to the phase difference between the first phase signal and the second phase signal, so as to solve the problems of unstable pulse width, unstable phase and poor amplitude consistency of the triangular wave. Based on the method, the quality problems of poor waveform, large amplitude difference, drift of time points and the like in the triangular wave obtained by data pulse signal deformation are solved, and the pulse waveform quality of the triangular wave is improved.
drawings
FIG. 1 is a block diagram of a triangular wave generator according to an embodiment;
FIG. 2 is a block diagram of a triangular wave generator according to another embodiment;
FIG. 3 is a circuit diagram of a triangular wave generator according to another embodiment;
FIG. 4 is a block diagram of a triangular wave generator according to still another embodiment;
FIG. 5 is a circuit diagram of a triangular wave generating apparatus according to yet another embodiment;
FIG. 6 is a block diagram of a triangular wave generating apparatus according to still another embodiment;
FIG. 7 is a circuit diagram of a triangular wave generating apparatus according to still another embodiment;
fig. 8 is a block diagram of a triangular wave generation system according to an embodiment.
Detailed Description
For better understanding of the objects, technical solutions and technical effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be noted that the following examples are only for explaining the present invention and are not intended to limit the present invention.
the embodiment of the utility model provides a triangular wave produces device.
Fig. 1 is a block diagram of a triangular wave generator according to an embodiment, and as shown in fig. 1, the triangular wave generator according to an embodiment includes a data pulse preprocessing module 100, a phase shift delay module 101, and a distortion generating module 102;
The Data pulse preprocessing module 100 is configured to access a Data pulse signal Data _ Input and shape the Data pulse signal Data _ Input, and the Data pulse preprocessing module 100 is further configured to transmit the shaped Data pulse signal Data _ Input to the phase shift delay module 101;
the Data pulse signal Data _ Input is a pulse signal having a signal frequency higher than a specific frequency in the triangular wave deformation processing. After receiving the Data pulse signal Data _ Input, the Data pulse preprocessing module 100 preprocesses the Data pulse signal Data _ Input, that is, shapes the Data pulse signal Data _ Input, so as to solve the overshoot problem and the pulse deformation problem generated in the transmission of the Data pulse signal Data _ Input. In one embodiment, the data pulse preprocessing module 100 may employ a pulse shaping circuit.
In another embodiment, fig. 2 is a block diagram of a triangular wave generator according to another embodiment, and as shown in fig. 2, the data pulse preprocessing module 100 includes an isolated dc circuit 200, a bias circuit 201, and a first buffer amplifier circuit 202;
The Input end of the isolation direct current circuit 200 is used for accessing a Data pulse signal Data _ Input, and the output end of the isolation direct current circuit 200 is respectively connected with the Input end of the first cache amplifying circuit 202 and the bias circuit 201;
the isolation dc circuit 200 is used to isolate a dc signal in the Data pulse signal Data _ Input. In one embodiment, the isolated dc circuit 200 may be implemented with a dc blocking capacitor or a dc block. As a preferred embodiment, the dc blocking capacitor is used for the isolated dc circuit 200, so as to simplify the isolated dc circuit 200 and improve reliability.
The output end of the first buffer amplifying circuit 202 is used for outputting the shaped Data pulse signal Data _ Input.
The first buffer amplifier circuit 202 is configured to shape the Data pulse signal Data _ Input, and solve problems of overshoot distortion and pulse deformation in the Data pulse signal Data _ Input. Correspondingly, the bias circuit 201 is used to improve the waveform shaping and conditioning capability of the first buffer amplifier circuit 202. In one embodiment, the first buffer amplifier circuit 202 may be an exclusive-or gate or a buffer amplifier, and the bias circuit 201 may be a clamp bias circuit or a self-bias circuit.
fig. 3 is a circuit diagram of a triangular wave generator according to another embodiment, and as shown in fig. 3, the isolated dc circuit 200 includes a dc blocking capacitor C1;
One end of the dc blocking capacitor C1 is an input end of the isolated dc circuit 200, and the other end of the dc blocking capacitor C1 is an output end of the isolated dc circuit 200.
As shown in fig. 3, the bias circuit 201 is a clamping bias circuit, and includes a first clamping resistor R1, a second clamping resistor R2, and a diode D1; the anode of the diode D1 is connected to the output end of the isolated dc circuit 200, and the cathode of the diode D1 is connected to the first end of the first clamping resistor R1 and the first end of the second clamping resistor R2, respectively; the second terminal of the first clamping resistor R1 is connected to a logic high VCC, and the second terminal of the second clamping resistor R2 is connected to ground.
The first clamping resistor R1, the second clamping resistor R2, and the diode D1 form a clamping bias circuit, so as to implement a high-level clamping bias function on the output end of the isolated dc circuit 200, better improve the waveform shaping and conditioning capability of the first buffer amplifier circuit 202, and reduce the probability of a pulse judgment error on the Data pulse signal Data _ Input.
in one embodiment, as shown in fig. 3, the bias circuit 201 further includes a first filter capacitor C2;
The first filter capacitor C2 is connected in parallel to the first and second terminals of the second clamp resistor R2.
the first filter capacitor C2 connected in parallel to the two ends of the second clamp resistor R2 is selected to reduce the influence of the high frequency spike in the power VCC on the Data pulse signal Data _ Input. In order to prevent the influence of the waveform fluctuation caused by the reduction of the overshoot of the Data pulse signal Data _ Input, the first filter capacitor C2 should have a small capacitance. In a preferred embodiment, the first filter capacitor C2 is a capacitor with a capacitance of 5.6 pF.
in one embodiment, as shown in FIG. 3, the first cache amplifying circuit 202 comprises a first XOR gate U1;
one input terminal of the first exclusive-or gate U1 is an input terminal of the first buffer amplifier circuit 202, the other input terminal of the first exclusive-or gate U1 is used for grounding, and an output terminal of the first exclusive-or gate U1 is an output terminal of the first buffer amplifier circuit 202.
the first exclusive-or gate U1 may function as a buffer amplifier to shape the Data pulse signal Data _ Input.
In one embodiment, as shown in fig. 3, a second filter capacitor C3 is further included;
The second filter capacitor C3 is connected in parallel between the input and output of the first buffer amplifier circuit 202.
when the first buffer amplifier circuit 202 selects the first xor gate U1, if the maximum operating frequency of the first xor gate U1 is too low, the triangular wave generator will not generate triangular waves in time, and if the maximum operating frequency of the first xor gate U1 is too high, the triangular wave generator will not generate triangular tines. Based on this, the steepness of the pulse edge of the Data pulse signal Data _ Input may be slowed down by the second filter capacitor C3 so as to adapt to the steepness of the pulse edge required for the triangular wave.
In one embodiment, as shown in fig. 3, the power supply further comprises an input resistor R3;
one input end of the first exclusive-or gate circuit U1 is connected to the other end of the dc blocking capacitor C1 through an input resistor R3.
The phase shift delay module 101 is configured to output a first phase signal med1 to a first Input end of the distortion generation module 102 according to the shaped Data pulse signal Data _ Input, the phase shift delay module 101 is configured to output a second phase signal med2 to a second Input end of the distortion generation module 102 according to the shaped Data pulse signal Data _ Input, and a phase difference exists between the first phase signal med1 and the second phase signal med 2;
The deformation generating module 102 is configured to output a triangular wave at an output terminal of the deformation generating module according to the first phase signal med1 and the second phase signal med 2.
The phase shift delay module 101 divides the shaped Data pulse signal Data _ Input into two signals, which are Input to the deformation generation module 102, and includes a first phase signal med1 and a second phase signal med2, which are Input to the deformation generation module 102. Wherein, there is a phase difference between the first phase signal med1 and the second phase signal med 2. In one embodiment, the second phase signal med2 is advanced in phase with respect to the first phase signal med 1. The phase shift delay module 101 controls the pulse width and phase of the triangular wave output by the output terminal of the deformation generation module 102 through the first phase signal med1 and the second phase signal med 2.
In one embodiment, fig. 4 is a block diagram of a triangular wave generating apparatus according to yet another embodiment, and as shown in fig. 4, the phase shift delay module 101 includes a first delay circuit 300 and a second buffer amplifier circuit 301;
The Input end of the first delay circuit 300 is used for accessing the shaped Data pulse signal Data _ Input, and the output end of the first delay circuit 300 is connected with the Input end of the second buffer amplifying circuit 301;
the output end of the second buffer amplifying circuit 301 is used for outputting a first phase signal med 1;
The second phase signal med2 is a shaped Data pulse signal Data _ Input.
The first delay circuit 300 is configured to perform a phase shift delay function on the shaped Data pulse signal Data _ Input, and change a phase of the shaped Data pulse signal Data _ Input. In one embodiment, the first delay circuit 300 may be a phase shift delay circuit. The second buffer amplifier circuit 301 functions as a buffer amplifier. In one embodiment, the second cache amplifying circuit 301 comprises a cache amplifier, an exclusive-or gate, an and gate, an or gate, or a nor gate.
In one embodiment, fig. 5 is a circuit diagram of a triangular wave generator according to yet another embodiment, and as shown in fig. 5, the first delay circuit 300 includes a first delay resistor R4 and a first delay capacitor C4;
one end of the first delay resistor R4 is an input end of the first delay circuit 300, the other end of the first delay resistor R4 is an output end of the first delay circuit 300, and the other end of the first delay resistor R4 is grounded through the first delay capacitor C4.
the first delay circuit 300 determines the delay characteristic by the RC product of the first delay resistor R4 and the first delay capacitor C4, and the RC product of the first delay resistor R4 and the first delay capacitor C4 determines the pulse width of the triangular wave.
In one embodiment, as shown in fig. 5, the second buffer amplifying circuit 301 includes a second exclusive-or gate U2;
one input end of the second exclusive-or gate U2 is an input end of the second buffer amplifier circuit 301, the other input end of the second exclusive-or gate U2 is used for grounding, and an output end of the second exclusive-or gate U2 is an output end of the second buffer amplifier circuit 301.
The second exclusive-or gate U2 acts as a buffer amplifier and produces a delay. Correspondingly, the pulse width of the triangular wave is equal to the transmission delay of the second exclusive-or gate U2 and the delay of the first delay circuit 300. As a preferred embodiment, when the first delay circuit 300 includes the first delay resistor R4 and the first delay capacitor C4, and the second buffer amplifier circuit 301 includes the second xor gate U2, the RC product number of the first delay resistor R4 and the first delay capacitor C4 should be adjusted so that the RC product number is equal to the difference between the required triangular pulse width and the transmission delay of the second xor gate U2 under the condition that the error rate is minimum.
in one embodiment, fig. 6 is a block diagram of a triangular wave generating apparatus according to yet another embodiment, and as shown in fig. 6, the phase shift delay module 101 includes a second delay circuit 400, a third buffer amplifying circuit 401 and a fourth buffer amplifying circuit 402;
The Input end of the second delay circuit 400 is used for accessing the shaped Data pulse signal Data _ Input, and the output end of the second delay circuit 400 is connected with the Input end of the third cache amplifying circuit 401;
the output end of the third buffer amplifying circuit 401 is used for outputting a first phase signal med 1;
the Input end of the fourth buffer amplifying circuit 402 is used for accessing the shaped Data pulse signal Data _ Input, and the output end of the fourth buffer amplifying circuit 402 is used for outputting the second phase signal med 2.
The second delay circuit 400 is configured to perform a phase shift delay function on the shaped Data pulse signal Data _ Input, and change a phase of the shaped Data pulse signal Data _ Input. In one embodiment, the second delay circuit 400 may be a phase shift delay circuit. The third buffer amplifier circuit 401 functions as a buffer amplifier. In one embodiment, the third cache amplifying circuit 401 comprises a cache amplifier, an exclusive-or gate, an and gate, an or gate, or a nor gate. Correspondingly, the fourth buffer amplifier circuit 402 functions as a buffer amplifier. In one embodiment, the fourth cache amplifying circuit 402 comprises a cache amplifier, an exclusive-or gate, an and gate, an or gate, or an nor gate.
in one embodiment, fig. 7 is a circuit diagram of a triangular wave generator according to still another embodiment, and as shown in fig. 7, the second delay circuit 400 includes a second delay resistor R5 and a second delay capacitor C5;
One end of the second delay resistor R5 is an input end of the second delay circuit 400, the other end of the second delay resistor R5 is an output end of the second delay circuit 400, and the other end of the second delay resistor R5 is grounded through the second delay capacitor C5.
The second delay circuit 400 determines the delay characteristic by the RC product of the second delay resistor R5 and the second delay capacitor C5, and the RC product of the second delay resistor R5 and the second delay capacitor C5 determines the pulse width of the triangle wave.
In one embodiment, as shown in fig. 7, the third cache amplifying circuit 401 includes a third exclusive or gate circuit U3;
an input end of the third exclusive or gate U3 is an input end of the third buffer amplifier circuit 401, another input end of the third exclusive or gate U3 is used for grounding, and an output end of the third exclusive or gate U3 is an output end of the third buffer amplifier circuit 401.
The third exclusive-or gate U3 functions as a buffer amplifier and also generates a delay.
In one embodiment, as shown in FIG. 7, the fourth cache amplifying circuit 402 comprises a fourth XOR gate U4;
An input terminal of the fourth exclusive-or gate U4 is an input terminal of the fourth buffer amplifier circuit 402, another input terminal of the fourth exclusive-or gate U4 is used for grounding, and an output terminal of the fourth exclusive-or gate U4 is an output terminal of the fourth buffer amplifier circuit 402.
the fourth exclusive-or gate U4 acts as a buffer amplifier and produces a delay.
It is to be noted that the propagation delay of the third exclusive or gate U3 is the sum of the delays of the first delay circuit 300, and the difference between the sum of the delays and the propagation delay of the fourth exclusive or gate U4 is equal to the pulse width of the triangular wave.
in one embodiment, the deformation generation module 102 includes a fifth exclusive-or gate;
one input end of the fifth exclusive-or gate is the first input end of the deformation generation module 102, the other input end of the fifth exclusive-or gate is the second input end of the deformation generation module 102, and the output end of the fifth exclusive-or gate is the output end of the deformation generation module 102.
In another embodiment, the deformation generation module 102 includes a NAND gate;
One input terminal of the nand gate circuit is a first input terminal of the deformation generation module 102, the other input terminal of the nand gate circuit is a second input terminal of the deformation generation module 102, and the output terminal of the nand gate circuit is an output terminal of the deformation generation module 102.
the distortion generation module 102 may select a fifth exclusive-or gate or nand gate circuit, so that the signal output by the phase shift delay module 101 is transformed into a triangular wave in the distortion generation module 102.
in the triangular wave generating apparatus according to any of the embodiments, the Data pulse preprocessing module 100 shapes the Data pulse signal Data _ Input to solve the problems of overshoot and pulse deformation generated during transmission of the Data pulse signal Data _ Input, so that the pulse waveform of the shaped Data pulse signal Data _ Input is stable and balanced. Further, the phase shift delay module 101 outputs the first phase signal med1 and the second phase signal med2 to the distortion generation module 102 according to the shaped Data pulse signal Data _ Input, respectively, so that the distortion generation module 102 outputs a triangular wave. The phase shift delay module 101 may further stabilize the pulse width and the phase of the triangular wave according to the phase difference between the first phase signal med1 and the second phase signal med2, so as to solve the problems of unstable pulse width, unstable phase and poor amplitude consistency of the triangular wave. Based on the method, the quality problems of poor waveform, large amplitude difference, drift of time points and the like in the triangular wave obtained by deforming the Data pulse signal Data _ Input are solved, and the pulse waveform quality of the triangular wave is improved.
the embodiment of the utility model provides a triangular wave produces system is still provided.
fig. 8 is a block diagram of a triangular wave generating system according to an embodiment, and as shown in fig. 8, the triangular wave generating system according to an embodiment includes a pulse signal source 10 and a triangular wave generating device 11;
the pulse signal source 10 is configured to output a Data pulse signal Data _ Input;
The triangular wave generating device 11 comprises a data pulse preprocessing module 100, a phase shift delay module 101 and a deformation generating module 102;
The Data pulse preprocessing module 100 is configured to access a Data pulse signal Data _ Input and shape the Data pulse signal Data _ Input, and the Data pulse preprocessing module 100 is further configured to transmit the shaped Data pulse signal Data _ Input to the phase shift delay module 101;
the phase shift delay module 101 is configured to output a first phase signal med1 to a first Input end of the distortion generation module 102 according to the shaped Data pulse signal Data _ Input, the phase shift delay module 101 is configured to output a second phase signal med2 to a second Input end of the distortion generation module 102 according to the shaped Data pulse signal Data _ Input, and a phase difference exists between the first phase signal med1 and the second phase signal med 2;
The deformation generating module 102 is configured to output a triangular wave at an output terminal of the deformation generating module according to the first phase signal med1 and the second phase signal med 2.
In the above-mentioned triangular wave generating system, the pulse signal source 10 outputs the Data pulse signal Data _ Input to the Data pulse preprocessing module 100, and the Data pulse preprocessing module 100 shapes the Data pulse signal Data _ Input to solve the problems of overshoot and pulse deformation generated during transmission of the Data pulse signal Data _ Input, so that the pulse waveform of the shaped Data pulse signal Data _ Input is stable and balanced. Further, according to the phase difference between the first phase signal med1 and the second phase signal med2, the phase shift delay module 101 outputs the first phase signal med1 and the second phase signal med2 to the distortion generating module 102 according to the shaped Data pulse signal Data _ Input, so that the distortion generating module 102 outputs a triangular wave. The phase shift delay module 101 may further stabilize the pulse width and the phase of the triangular wave, so as to solve the problems of unstable pulse width, unstable phase, and poor amplitude consistency of the triangular wave. Based on the method, the quality problems of poor waveform, large amplitude difference, drift of time points and the like in the triangular wave obtained by deforming the Data pulse signal Data _ Input are solved, and the pulse waveform quality of the triangular wave is improved.
the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (15)
1. a triangular wave generating device is characterized by comprising a data pulse preprocessing module, a phase shift delay module and a deformation generating module;
the data pulse preprocessing module is used for accessing a data pulse signal and shaping the data pulse signal, and is also used for transmitting the shaped data pulse signal to the phase shift delay module;
The phase shifting delay module is used for outputting a first phase signal to a first input end of the deformation generation module according to the shaped data pulse signal, the phase shifting delay module is used for outputting a second phase signal to a second input end of the deformation generation module according to the shaped data pulse signal, and a phase difference exists between the first phase signal and the second phase signal;
The deformation generation module is used for outputting a triangular wave at the output end of the deformation generation module according to the first phase signal and the second phase signal.
2. the apparatus according to claim 1, wherein the data pulse preprocessing module comprises an isolated dc circuit, a bias circuit and a first buffer amplifying circuit;
The input end of the isolation direct current circuit is used for accessing the data pulse signal, and the output end of the isolation direct current circuit is respectively connected with the input end of the first cache amplifying circuit and the bias circuit;
and the output end of the first buffer amplifying circuit is used for outputting the shaped data pulse signal.
3. the triangular wave generating apparatus according to claim 2, wherein the isolated dc circuit includes a dc blocking capacitor.
4. the triangular wave generating apparatus according to claim 2, wherein the bias circuit includes a first clamp resistor, a second clamp resistor, and a diode;
the anode of the diode is connected with the output end of the isolation direct current circuit, and the cathode of the diode is respectively connected with the first end of the first clamping resistor and the first end of the second clamping resistor;
the second end of the first clamping resistor is used for switching on a logic high level, and the second end of the second clamping resistor is used for grounding.
5. The triangular wave generating apparatus according to claim 2, wherein the first buffer amplifying circuit includes a first exclusive or gate circuit;
one input end of the first exclusive-or gate circuit is the input end of the first cache amplifying circuit, the other input end of the first exclusive-or gate circuit is used for grounding, and the output end of the first exclusive-or gate circuit is the output end of the first cache amplifying circuit.
6. The triangular wave generating apparatus according to claim 2, further comprising a second filter capacitor;
The second filter capacitor is connected in parallel with the input end and the output end of the first cache amplifying circuit.
7. The apparatus according to claim 1, wherein the phase shift delay module comprises a first delay circuit and a second buffer amplifying circuit;
The input end of the first delay circuit is used for accessing the shaped data pulse signal, and the output end of the first delay circuit is connected with the input end of the second cache amplifying circuit;
the output end of the second cache amplifying circuit is used for outputting the first phase signal;
the second phase signal is the shaped data pulse signal.
8. the triangular wave generating apparatus according to claim 7, wherein the first delay circuit includes a first delay resistance and a first delay capacitance;
One end of the first delay resistor is an input end of the first delay circuit, the other end of the first delay resistor is an output end of the first delay circuit, and the other end of the first delay resistor is grounded through the first delay capacitor.
9. The triangular wave generating apparatus according to claim 7, wherein the second buffer amplifying circuit includes a second exclusive or gate circuit;
one input end of the second exclusive-or gate circuit is the input end of the second cache amplifying circuit, the other input end of the second exclusive-or gate circuit is used for grounding, and the output end of the second exclusive-or gate circuit is the output end of the second cache amplifying circuit.
10. The apparatus according to claim 1, wherein the phase shift delay module comprises a second delay circuit, a third buffer amplifying circuit and a fourth buffer amplifying circuit;
The input end of the second delay circuit is used for accessing the shaped data pulse signal, and the output end of the second delay circuit is connected with the input end of the third cache amplifying circuit;
the output end of the third cache amplifying circuit is used for outputting the first phase signal;
the input end of the fourth buffer amplifying circuit is used for accessing the shaped data pulse signal, and the output end of the fourth buffer amplifying circuit is used for outputting the second phase signal.
11. The triangular wave generating apparatus according to claim 10, wherein the second delay circuit includes a second delay resistance and a second delay capacitance;
One end of the second delay resistor is an input end of the second delay circuit, the other end of the second delay resistor is an output end of the second delay circuit, and the other end of the second delay resistor is grounded through the second delay capacitor.
12. the triangular wave generating apparatus according to claim 10, wherein the third buffer amplifying circuit includes a third exclusive or gate circuit;
One input end of the third exclusive-or gate circuit is an input end of the third cache amplifying circuit, the other input end of the third exclusive-or gate circuit is used for grounding, and an output end of the third exclusive-or gate circuit is an output end of the third cache amplifying circuit.
13. The triangular wave generating apparatus according to claim 10, wherein the fourth buffer amplifying circuit includes a fourth exclusive or gate circuit;
one input end of the fourth exclusive-or gate circuit is the input end of the fourth cache amplifying circuit, the other input end of the fourth exclusive-or gate circuit is used for grounding, and the output end of the fourth exclusive-or gate circuit is the output end of the fourth cache amplifying circuit.
14. The triangular wave generating apparatus according to claim 1, wherein the deformation generating module includes a fifth exclusive or gate circuit;
one input end of the fifth exclusive-or gate circuit is a first input end of the deformation generation module, the other input end of the fifth exclusive-or gate circuit is a second input end of the deformation generation module, and an output end of the fifth exclusive-or gate circuit is an output end of the deformation generation module.
15. a triangular wave generating system is characterized by comprising a pulse signal source and a triangular wave generating device;
the pulse signal source is used for outputting a data pulse signal;
the triangular wave generating device comprises a data pulse preprocessing module, a phase shift delay module and a deformation generating module;
the data pulse preprocessing module is used for accessing a data pulse signal and shaping the data pulse signal, and is also used for transmitting the shaped data pulse signal to the phase shift delay module;
the phase shifting delay module is used for outputting a first phase signal to a first input end of the deformation generation module according to the shaped data pulse signal, the phase shifting delay module is used for outputting a second phase signal to a second input end of the deformation generation module according to the shaped data pulse signal, and a phase difference exists between the first phase signal and the second phase signal;
the deformation generation module is used for outputting a triangular wave at the output end of the deformation generation module according to the first phase signal and the second phase signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109889188A (en) * | 2019-04-17 | 2019-06-14 | 广州恒众车联网智能电子技术有限公司 | Triangle wave generation device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109889188A (en) * | 2019-04-17 | 2019-06-14 | 广州恒众车联网智能电子技术有限公司 | Triangle wave generation device and system |
| CN109889188B (en) * | 2019-04-17 | 2024-05-24 | 广州市恒众车联网科技股份有限公司 | Triangular wave generating device and system |
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