KR100331755B1 - An ulterasonic generator - Google Patents

Abstract

The present invention relates to an ultrasonic generator for precisely measuring an output for generating an ultrasonic wave, precisely controlling the generation of ultrasonic waves through the ultrasonic wave generator, and accurately displaying the output state of the ultrasonic generator, A current detector for detecting a current output from the output transformer, a phase adjusting unit for adjusting a phase of a voltage output from the output transformer, a current detector and a phase adjusting unit, A rectifying and amplifying unit for rectifying the voltage output from the multiplexer unit, for amplifying and outputting the voltage, and a rectifying and amplifying unit for adjusting the offset of the rectified and amplified voltage in the rectifying and amplifying unit An offset adjusting section, a rectifying and amplifying section, And a pulse width control signal is applied to the pulse width control unit at the time of outputting the output power by analyzing the output power according to the set ultrasonic amount And a microcomputer for varying the pulse width modulation signal and generating an output power display and a warning sound generation control signal.

Description

[0001] AN ULTRASONIC GENERATOR [0002]

The present invention relates to an ultrasonic generator, and more particularly, to an ultrasonic generator for precisely measuring an output for generating an ultrasonic wave, controlling the generation of the ultrasonic wave precisely, and accurately displaying an output state.

Generally, an ultra-audible sound is a sound wave that can not be heard over a threshold frequency that can be heard in the human ear. It is essentially the same as an audible sound wave, but is completely unlike an audible sound . The detection of fish, depth measurement, detection of metal damage, medical diagnosis, manufacture of milk products, dispersion of solid particles into liquid, washing, ultrasonic processing, medical, cosmetic and other technical applications And the speed of sound (sound velocity) can be measured accurately by measuring the elasticity (elasticity) of the material, it is becoming a research tool in physics.

A configuration of a conventional ultrasonic generator for generating such ultrasonic waves is shown in Fig.

Reference numeral 1 denotes a power regulator for variably controlling the power externally, 2 denotes a triangular wave generator for generating a triangular wave, 3 denotes a triangular wave generated by the triangular wave generator 2, And a triangular wave comparison and phase control unit for controlling the triac and the diode by controlling the phase of the output signal according to the result of the triangular wave comparison and phase control. Reference numeral 5 denotes a diode section controlled according to an output signal outputted from the triangular wave comparison and phase control section 3 and reference numeral 6 denotes a choke section which is driven according to the output of the diode section 5, Trans.

Reference numeral 7 denotes a frequency controller for inputting a signal for externally controlling the frequency, 8 denotes a pulse for controlling the output signal in accordance with the detected output signal and the output signal of the frequency controller 7, Width modulation control signal, and 9 denotes a drive transformer whose drive is controlled in accordance with the output signal of the pulse width control unit 8. [0050]

Reference numeral 10 denotes a FET module for controlling the driving of an output transformer for generation of ultrasonic waves in accordance with the output signals of the choke transformer 6 and the drive transformer 9, Reference numeral 12 denotes a current detector for detecting a current outputted from the output transformer 11 and converting it into a voltage and outputting the voltage, and reference numeral 13 denotes an output transformer for outputting a voltage for generating the ultrasonic wave according to the output And an amplifying and comparing unit for amplifying the voltage output from the current detector 12 to a predetermined level and then comparing the detected voltage with the reference voltage to apply the difference voltage to the pulse width control unit 8 for pulse width control .

Reference numeral 14 denotes a matching coil for matching the output voltage of the output transformer 11, 15 denotes a vibrator for generating ultrasonic waves by vibrating according to the voltage through the matching coil 14, Reference numeral 16 denotes an operational amplifier for operationally amplifying the power and the detection voltage set by the power regulator 1 and reference numeral 17 denotes an LED driver for generating an LED driving signal according to the output of the operational amplifier 16, Reference numeral 18 denotes an output display unit for displaying an abnormal state according to an output signal of the LED driver 17. [

The operation of the conventional ultrasonic generator constructed as above will be described in detail with reference to FIG. 2 to FIG.

First, when the power regulator 1 of FIG. 1 and FIG. 3 is adjusted to adjust the amount of generated ultrasonic waves, a voltage corresponding thereto is input to the triangular wave comparison and phase control unit 3 and the operational amplifier 15, respectively.

At this time, the triangular wave generating unit 2 generates a triangular wave by the circuit configuration as shown in FIG. 2 and transfers it to the triangular wave comparing and phase controlling unit 3.

Then, the triangular wave comparison and phase control unit 3 compares the power set by the power adjuster 1 with the triangular wave generated by the triangular wave generating unit 2, and controls the driving of the triac as the power supply unit according to the difference Lt; / RTI >

FIG. 3 is a circuit diagram showing an embodiment of the triangular wave comparison and phase control unit 3. FIG.

First, a voltage comparator (3a) compares a triangular wave generated in the triangular wave generator (2) with a voltage (reference voltage) set in the power regulator (1) and extracts the difference voltage. And controls the coupler 3b. That is, the photocoupler 3b generates a pulse whose phase is opposite to that of the output of the voltage comparator 3a. A pulse generated in the photocoupler 3b is rectified to a voltage through a coil L2 and smoothed through a capacitor EC1 to apply a rectified voltage to the pin 11 of the phase controller 3d as a control voltage do.

The phase controller 3d generates a triac control signal for controlling the output WATT according to the control voltage input to the pin 11. [ When the applied control voltage is the lowest, the output WATT becomes the highest, and when the applied control voltage is the highest, the output WATT becomes the lowest.

In more detail, the output WATT is adjusted by adjusting the output pulse widths of the output stages Q1 and Q2 for controlling the triac by the control voltage input to the pin 11. When the control voltage (the input voltage of the pin 11) is the lowest, the pulse widths of the output terminals Q1 and Q2 and the output WATT are maximized. On the other hand, when the control voltage , Q2) and the output WATT operate at the minimum.

Here, the waveforms of the pulses output from the output stages Q1 and Q2 are as shown in FIG. 4C (Q2) and FIG. 4D (Q1).

The output terminals Q1 and Q2 are respectively connected to diodes D1 and D2 operating at 60 Hz and operate normally at 120 Hz. When a ripple switch (B contact switch 3c) is pressed, the output of the output terminal Q1 is turned off, (Ripple).

The pulse thus outputted is transmitted to the triac 4 and the diode 5 of FIG. 1 to adjust the output WATT. The choke transformer 6 operates in response to the diode operation of the diode section 5 and the switching element in the FET module 10 is controlled in accordance with the driving of the choke transformer 6. [

Hereinafter, the phase controller 3d will be described in more detail.

The phase controller 3d has a built-in zero detector, a synchronous resistor, a comparator, a discharge monitor, and an output logic therein. The phase controller 3d includes a thyristor, a triac, a transistor ). The trigger pulse can be changed between 0 degrees and 180 degrees of phase angle, and the synchronization signal is obtained from the line voltage through the resistor.

The sinkron resistor controls the ramp generator and the capacitor connected to the pin 10 charges the constant current by a resistor connected to the pin 9. Operates the internal logic circuit if the ramp voltage of the pin 10 exceeds the value of the pin 11 and changes the triggering angle within the phase angle from 0 to 180 degrees by the magnitude of the input voltage of the pin 11 .

A (+) pulse of about 30 μs appears at the output terminals Q1 and Q2 every half period. This pulse width can sustain a pulse width of up to 180 degrees by means of a capacitor connected to pin 12. (When pin 12 is connected to GND, the pulse will be at a phase angle between 0 and 180 degrees A trigger pulse can be obtained).

Also, the pin 3 can be used to control the logic outside it, which has a (+) signal of 0 degrees + 180 degrees. In addition, the pin 7 can output the outputs of the output stages Q1 and Q2 and the pin 6 can disable the outputs + Q1, + Q2, -Q1 and -Q2. V). The pin 13 can extend the outputs of -Q1 and -Q2 from the full pulse 180 degrees to zero degrees.

FIG. 4 shows the respective pin output waveforms of the phase controller 3d.

4C shows the output waveform of the output stage Q2, FIG. 4D shows the output waveform of the output stage Q1, FIG. 4E shows the output waveform of the synchronizing voltage pin, and FIG. 4F shows the output waveform of the output terminal Q1 when the pin 12 is connected to the ground GND. FIG. 4G shows the output waveform of the output terminal Q2 when the pin 13 and ground are connected. FIG. Fig. 4H shows the output waveform of QU (pin 3), Fig. 4J shows the inverted output waveform of QZ (pin 7), Fig. 4H shows the inverted output waveform of the output Q1 when the pin 13 and ground are connected, ) ≪ / RTI >

On the other hand, a voltage corresponding to the control of the triac and the diode as described above is applied to the FET module 10.

When the frequency controller 7 is operated externally to control the frequency of the output WATT, a signal corresponding thereto is applied to the pulse width control section 8, and the pulse width control section 8 outputs the frequency setting signal And controls the drive transformer 9 by controlling the width of the drive pulse of the drive transformer 9 according to the detection voltage fed back.

Hereinafter, the operation of the pulse width control unit 8 will be described in more detail.

5 is a circuit diagram showing one embodiment of the pulse width control unit 8. The pulse width controller 8a is used for precisely controlling the pulse width modulation and includes a reference regulator, , An oscillator, an undervoltage lock out, and a flip-flop. When the reference voltage is applied to the input terminal EA +, it is supplied to the internal PWM amplifier signal terminal and compared with the oscillator signal value by RT, CT (change time) and TD (Dischange time) Occurs.

The voltage of the drive transformer 9 is transmitted to the FET module 10 and the output transformer 9 is controlled according to the control of the FET module 10. [ 11) outputs a voltage for generating ultrasonic waves.

The matching coil 14 matches the output voltage of the output transformer 11 and the vibrator 15 vibrates according to the voltage through the matching coil 14 to generate ultrasonic waves.

The current detector 12 detects the current output from the output transformer 11 and converts the current into a voltage and applies the voltage to the amplifying and comparing unit 13, The voltage is amplified to a predetermined level and compared with the reference voltage, and the difference voltage is applied to the pulse width control unit 8 to control the pulse width.

Next, the operational amplifier 16 operates and amplifies the power and the detection voltage set by the power regulator 1, and the LED driver 17 generates an LED driving signal according to the output of the operational amplifier 16 do.

6 is a circuit diagram showing an embodiment of the LED driver 17. The voltage follower 17b and the 5-dot linear level meter driver IC 17a are used to output the output value of the operational amplifier 16 to the LED bar Display. Set 0 to 0.356V LED BAR with variable resistor (VR3) when changing 0 ~ 10V with external voltage (external VR).

In addition, the output display unit 18 displays the output of the LED driver 17.

FIG. 7 is a circuit diagram showing an embodiment of the output display unit 18. Referring to FIG.

The noninverting amplifier 18b sets the WATT output value and amplifies and rectifies the value set by the resistors R52, R51, and R50 when the outputs are 300W, 600W, and 1200W, 18c of the non-inverting terminal (+). The non-inverting amplifier 18c sets the alarm point by varying the input voltage of the inverting terminal (-) to 0.5 V to 8 V by the variable resistor VR2. If the WATT value is larger than the set alarm value, And generates an output that stops the operation.

In this case, when the variable voltage set by the variable resistor VR2 is set to 5V, if the signal is supplied to the signal terminal of the + pin 5V or less, the alarm state is OFF, and when it is 5V or more, the alarm state is ON.

However, such a conventional ultrasonic generator has disadvantages in that the ultrasonic wave generation accuracy is lowered because the ultrasonic wave generator detects only the current outputted from the output transformer and controls the drive transformer by varying only the pulse width modulated signal at the over output.

Further, there is a disadvantage in that the triac control is complicated by generating a triangular wave for triac control, comparing the resulting triangular wave with the reference voltage, and controlling the phase of the triac control signal by the resultant value.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems occurring in the conventional ultrasonic generator,

An object of the present invention is to provide an ultrasonic generator which accurately measures the output for generating ultrasonic waves, precisely controls the generation of ultrasonic waves, and accurately displays an output state.

According to an aspect of the present invention, there is provided an ultrasonic generator,

An ultrasonic generator comprising a power regulator, a triac, a diode, a choke transformer, a frequency controller, a pulse width controller, a drive transformer, an FET module, an output transformer, a matching coil,

A phase controller for controlling an output power by controlling a phase of the triac driving signal according to a power level set by the power regulator;

A current detector for detecting a current output from the output transformer;

A phase adjusting unit for adjusting a phase of a voltage output from the output transformer;

A multiplier unit for multiplying a current and a voltage respectively outputted from the current detector and the phase adjusting unit;

A rectifying and amplifying unit for rectifying, outputting, and outputting a voltage output from the multiple driver unit;

An offset adjusting unit for adjusting the offset of the rectified and amplified voltage in the rectifying and amplifying unit;

A span adjuster for adjusting the span of the rectified and amplified voltage in the rectifying and amplifying unit;

The output power is recognized by the output voltage of the regulated and amplified part of the span, and the output power is analyzed according to the set ultrasonic amount, and a pulse width control signal is applied to the pulse width control part upon over- And generates an output power indication and a warning sound generation control signal;

A warning sound generating unit for warning the over-output state according to a warning sound generation control signal output from the microcomputer;

And a display unit for displaying an output state according to a display control signal output from the microcomputer.

1 is a block diagram showing a configuration of a conventional ultrasonic generator,

FIG. 2 is a circuit diagram showing an embodiment of the triangular wave generator of FIG. 1,

FIG. 3 is a circuit diagram showing one embodiment of the triangular wave comparison and phase control unit of FIG. 1,

FIG. 4 is a diagram showing operation waveforms of the respective pins of the phase adjuster of FIG. 3,

FIG. 5 is a circuit diagram showing an embodiment of the pulse width control unit of FIG. 1,

FIG. 6 is a circuit diagram showing an embodiment of the LED driving unit of FIG. 1,

7 is a circuit diagram showing an embodiment of the output display unit of FIG. 1,

8 is a block diagram showing a configuration of an ultrasonic wave generator according to the present invention,

FIG. 9 is a circuit diagram showing an embodiment of the phase control unit of FIG. 8,

10 is a circuit diagram showing an embodiment of the pulse width control unit of FIG. 8,

11 is a circuit diagram showing an embodiment of the multiplier unit of FIG. 8,

12 is a circuit diagram showing one embodiment of the offset adjusting unit, span adjusting unit, rectifying and amplifying unit of FIG. 8,

FIG. 13 is a circuit diagram showing an embodiment of the microcomputer, the model setting unit, the display unit, and the alarm sound generating unit of FIG. 8,

FIG. 14 is a flowchart illustrating a process for output display and warning in the present invention.

Description of the Related Art

102 ..... phase control unit 107 ..... pulse width control unit

113 ..... Current detector 114 ..... Phase adjuster

115 ..... multiplier unit 116 ..... offset adjustment unit

117 ..... span adjusting part 118 ..... rectifying and amplifying part

120 ..... Microcomputer

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

8 is a block diagram showing a configuration of an ultrasonic generator according to the present invention.

Reference numeral 101 denotes a power regulator for variably controlling the power externally. Reference numeral 102 denotes a regulator for controlling the phase of the triad driving signal according to the power level set by the power regulator 101, Reference numeral 103 denotes a triac section to be controlled in accordance with a control signal outputted from the phase control section 102, 104 denotes a diode section to be controlled according to the output of the triac section 103, And reference numeral 105 denotes a choke transformer driven according to the output of the diode unit 104.

Reference numeral 106 denotes a frequency controller for inputting a signal for externally controlling the frequency. Reference numeral 107 denotes a pulse width modulation signal generator for generating a pulse width modulation signal according to the level set by the frequency controller 106, And a pulse width control unit for varying the generated pulse width modulation signal in accordance with the pulse width modulation control signal. Reference numeral 108 denotes a drive transformer whose drive is controlled in accordance with the output signal of the pulse width control unit 107. [

Reference numeral 109 denotes a FET module for controlling driving of an output transformer for generation of ultrasonic waves in accordance with output signals of the choke transformer 105 and the drive transformer 108. Reference numeral 110 denotes a FET module Reference numeral 111 denotes a matching coil for matching the output voltage of the output transformer 110, reference numeral 112 denotes a voltage across the matching coil 111, And generates ultrasonic waves.

Reference numeral 113 denotes a current detector for detecting a current output from the output transformer 110. Reference numeral 114 denotes a phase adjusting unit for adjusting the phase of a voltage output from the output transformer 110. Reference numeral 114 denotes a phase adjusting unit, Reference numeral 115 denotes a multiplexer unit for multiplying the current and the voltage respectively outputted from the current detector 113 and the phase adjusting unit 114. Reference numeral 118 denotes a rectifier for rectifying and amplifying the voltage outputted from the multiplexer unit 115 Reference numeral 116 denotes an offset adjusting unit for adjusting the offset of the voltage rectified and amplified by the rectifying and amplifying unit 118. Reference numeral 117 denotes an offset adjusting unit for adjusting the offset of the voltage rectified and amplified by the rectifying and amplifying unit 118 And a span adjuster for adjusting the span of the rectified and amplified voltages.

Reference numeral 119 denotes a model setting unit for setting a desired amount of ultrasonic wave generation. Reference numeral 120 denotes an output power of the span-regulated rectifying and amplifying unit 118, And outputs a pulse width control signal to the pulse width control unit 107 to vary the pulse width modulation signal, and generates an output power display and a warning sound generation control signal. Reference numeral 122 denotes an alarm sound generating unit for alerting the over-output state according to the alarm sound generation control signal output from the microcomputer 120. Reference numeral 121 denotes an output state according to the display control signal output from the microcomputer 120. [ .

The operation of the ultrasonic generator according to the present invention will now be described in detail with reference to FIGS. 9 to 14. FIG.

First, when the power regulator 101 of FIGS. 8 and 9 is adjusted to adjust the amount of generated ultrasonic waves, a voltage corresponding thereto is input to the phase controller 102.

The phase control unit 102 applies a control signal for controlling the power to the triac unit 103 according to the input power control voltage so that the output (WATT) is adjusted.

The operation of the phase control unit 102 will be described in more detail as follows.

9 is a circuit diagram showing an embodiment of the phase control unit 102. Referring to FIG.

The phase controller 102 includes a phase controller 102a and a zero detector, a synchronous register, a comparator, a discharge monitor, and output logic are built in the phase controller 102a Thyristors, triacs, transistors, and the like.

The reference voltage of 0-10V set by the ramp voltage 9.93V of the 10th pin and the variable resistor VR1 connected to the 11th pin control voltage are compared and the resultant value is turned on so that the tri- 103, thereby adjusting the output (WATT).

For example, when the reference voltage is 10V, the pulse width is minimum at the top of the ramp voltage. Therefore, the output is minimized by turning on the triac to the minimum. When the reference voltage is 0V, the lower part of the ramp voltage The maximum output is obtained by turning on the triac to the maximum (see the output waveforms of the output terminals Q1 and Q2 in Fig. 4 attached).

Here, the triangle wave input to the tenth pin is set according to the following equation (1).

Where R = 100K,

.

V is the control voltage value of pin 11, R is the register value of pin 9, and C is the capacitor value of pin 10.

Thus, the phase controller 102a is operated at output frequencies Q1 and Q2, respectively, at 60 Hz, and each output is summed at diodes D1 and D2 to operate at 120 Hz. At this time, when the ripple switch 102b is turned on, the output of the output terminal Q1 is turned off and operated only at 60Hz.

The sinkron resistor controls the ramp generator and the capacitor connected to the pin 10 charges the constant current by a resistor connected to the pin 9. [ Operates the internal logic circuit if the ramp voltage of the pin 10 exceeds the value of the pin 11 and changes the triggering angle within the phase angle from 0 to 180 degrees by the magnitude of the input voltage of the pin 11 .

A (+) pulse of about 30 μs appears at the output terminals Q1 and Q2 every half period. This pulse width can sustain a pulse width of up to 180 degrees by means of a capacitor connected to pin 12. (When pin 12 is connected to GND, the pulse will be at a phase angle between 0 and 180 degrees A trigger pulse can be obtained).

Also, the pin 3 can be used to control the logic outside it, which has a (+) signal of 0 degrees + 180 degrees. In addition, the pin 7 can output the outputs of the output stages Q1 and Q2 and the pin 6 can disable the outputs + Q1, + Q2, -Q1 and -Q2. V). The pin 13 can extend the outputs of -Q1 and -Q2 from the full pulse 180 degrees to zero degrees.

The triac in the triac part 103 is controlled in accordance with the phase controlled triac control signal output from the phase controller 102a to adjust the output and the output of the triac part 103 is controlled by the output of the triac part 103 104 operates, and the choke transformer 105 operates in response to the diode, so that the switching element in the FET module 109 is controlled.

Next, when the frequency controller 106 is externally operated to control the frequency of the output WATT, a signal corresponding thereto is applied to the pulse width control section 107, and the pulse width control section 107 outputs the frequency setting signal And controls the drive transformer 108 by controlling the width of the drive pulse of the drive transformer 108 in accordance with the pulse width modulation control signal.

Hereinafter, the operation of the pulse width control unit 107 will be described in more detail.

10 is a circuit diagram showing one embodiment of the pulse width control unit 107. The pulse width controller 107a is used for precisely controlling the pulse width modulation and includes a reference regulator, , An oscillator, an undervoltage lock out, and a flip-flop. When the reference voltage is applied to the input terminal EA +, it is supplied to the internal PWM amplifier signal terminal and compared with the oscillator signal value by RT, CT (change time) and TD (Dischange time) Occurs.

The voltage of the drive transformer 108 is transmitted to the FET module 109 and the output transformer 108 is controlled according to the control of the FET module 109. [ 110 outputs a voltage for generating ultrasonic waves.

In addition, the matching coil 111 matches the output voltage of the output transformer 110, and the vibrator 112 vibrates according to the voltage through the matching coil 111 to generate ultrasonic waves.

The current detector 113 detects the current output from the output transformer 110 and inputs the detected current to the multiplexer 115. The phase adjuster 114 adjusts the phase of the voltage output from the output transformer 110, And inputs it to the multiplier unit 115. [

The multiplier 115 multiplies the input current value and the voltage value, respectively, and outputs the multiplied value as the output value WATT.

11 is a circuit diagram showing an embodiment of the multiplier unit 115. Referring to FIG.

The internal multiplier 115 multiplies the current value detected by the current detector 113 by the voltage output from the phase adjusting unit 114 and outputs a result W thereof.

Here, a method of multiplying the current value and the voltage value input respectively by the multiplier 115 is according to the following equation (2).

Here, X1 is a phase-adjusted voltage value input terminal, X2 is a ground voltage input terminal, Y1 is a detected current value input terminal, Y2 is a ground voltage input terminal, and Z is a pin 6 ground voltage input terminal.

Next, the rectifying and amplifying unit 118 rectifies the voltage output from the multiple driver unit 115, amplifies the voltage, and inputs the amplified voltage to the microcomputer 120.

At this time, the offset adjusting unit 116 and the span adjusting unit 117 adjust the offset of the rectified voltage and adjust the span of the amplified voltage.

12 is a circuit diagram showing one embodiment of the rectifying and amplifying unit 118, the offset adjusting unit 116, and the span adjusting unit 117. In FIG.

That is, the first amplifier 118a in the rectifying and amplifying unit 118 rectifies the analog voltage value output from the multiplier 115 to a DC voltage, and the rectified DC voltage is rectified to the second amplifier 118b Amplification.

Here, in the DC voltage amplification, the offset adjusting unit 116 adjusts the offset by the variable resistor VR4 and the resistors R21 and R20.

In other words, there is a need to eliminate the offset voltage in DC voltage amplification. This places a small DC voltage on the input so that the DC output voltage is zero.

Here, the offset voltage is ± VR4 [R20 / R21 + R20] = ± 5 [100 / 10K + 100] = ± 50 mv.

And the voltage gain (Avf) of the second amplifier 118b is R16 / R17 and Vo = - (R / R) Vi.

Further, the span adjustment voltage Va = (R22 * Vo) / (VR3 + R22) = 0.33 V and Va can be varied from Vo to 0.33 V.

The smoothing voltage is smoothed and input to the microcomputer 120. The microcomputer 120 recognizes the output power by the output voltage of the span adjusted rectifying and amplifying unit 118 and outputs the set ultrasonic amount And the pulse width control signal is applied to the pulse width control unit 107 to vary the pulse width modulation signal. In addition, a warning sound generation control signal is generated at the time of over output, and an output display control signal is generated when the output state is normal.

Accordingly, the pulse width control unit 107 varies the pulse width modulation signal currently being output according to the applied control signal, thereby adjusting the final output WATT.

In response to the display control signal output from the microcomputer 120, the display unit 121 displays the output state of the microcomputer 120, Lt; / RTI >

13 is a circuit diagram showing one embodiment of the microcomputer 120, the alarm sound generating unit 122, and the display unit 121. As shown in FIG.

The microcomputer 120 is a main control unit (MCU) having four analog input points, and receives an output WATT value using one of the points. The input WATT value is compared with the internally set alarm value and the output is cut off if it is WATT value more than the alarm value, and displayed if it is normal.

Here, the alarm setting is set by the dip switch 119a. For example, when the first pin is turned on, the alarm is activated at 700WATT. When the second pin is turned on, the alarm is activated at 400WATT. Is set to operate.

FIG. 14 illustrates an algorithm for displaying an output on the display unit 121 by the microcomputer 120, and for generating an alarm and for interrupting an output when over-outputting. Here, S represents a step (STEP).

As shown in this figure, an analog / digital module is configured in step S1, and a sample time wait is performed in step S2. In step S3, the input analog signal is converted into a digital signal, and in step S4, whether or not the A / D conversion is completed is confirmed.

If the A / D conversion is completed, the converted digital result data is stored in the buffer in step S5, the value stored in the buffer is compared with the threshold in step S6, and the determined value is stored in the S buffer .

In step S7, the converted value is compared with the set value. If the converted value is a set value, a warning sound is generated in step S8. If the converted value is equal to or larger than the alarm set value, control is performed in step S9 to generate an alarm, And controls to display the FND error. Then, it is checked whether or not 30 seconds have elapsed in step S10. If 30 seconds have elapsed, the process returns to the first step. If 30 seconds have not elapsed, the process returns to step S9.

Next, if the WATT value to be output is normal, the 8-bit value stored in the S buffer is read by the capacity in step S11 and converted into 4-unit BCD values. In step S12, BCD1 and BCD2 composed of 2 units BCD are displayed Buffers 1, 2, 3, and 4 are divided into units.

In step S13, the contents of the display buffers 1, 2, 3, 4 are converted into segment codes and displayed on the FND. In step S14, whether or not the delay time is completed is retrieved. .

According to the 'ultrasonic generator' of the present invention described above, there is an advantage that an output for generating an ultrasonic wave can be accurately measured, and the ultrasonic wave generation can be precisely controlled through the advantage.

Claims (3)

An ultrasonic generator comprising a power regulator, a triac, a diode, a choke transformer, a frequency controller, a pulse width controller, a drive transformer, an FET module, an output transformer, a matching coil, A phase controller for controlling an output power by controlling a phase of the triac driving signal according to a power level set by the power regulator; A current detector for detecting a current output from the output transformer; A phase adjusting unit for adjusting a phase of a voltage output from the output transformer; A multiplier unit for multiplying a current and a voltage respectively outputted from the current detector and the phase adjusting unit; A rectifying and amplifying unit for rectifying, outputting, and outputting a voltage output from the multiple driver unit; An offset adjusting unit for adjusting the offset of the rectified and amplified voltage in the rectifying and amplifying unit; A span adjuster for adjusting the span of the rectified and amplified voltage in the rectifying and amplifying unit; The output power is recognized by the output voltage of the regulated and amplified part of the span, and the output power is analyzed according to the set ultrasonic amount, and a pulse width control signal is applied to the pulse width control part upon over- And generates an output power indication and a warning sound generation control signal; A warning sound generating unit for warning the over-output state according to a warning sound generation control signal output from the microcomputer; And a display unit for displaying an output state according to a display control signal output from the microcomputer. 2. The ultrasonic generator according to claim 1, wherein the multiplier section calculates the current value and the voltage to be inputted based on the following equation (Equation) and outputs the result W thereof. [Mathematical Expression] Here, X1 is a phase-adjusted voltage value input terminal, X2 is a ground voltage input terminal, Y1 is a detected current value input terminal, Y2 is a ground voltage input terminal, and Z is a pin 6 ground voltage input terminal. The amplifying and amplifying unit according to claim 1, wherein the rectifying and amplifying unit comprises: a first amplifier (118a) for rectifying an analog voltage value output from the multiplier unit to a DC voltage; And a second amplifier (118b) for amplifying the ultrasonic waves.