CN108684123B - Pulse xenon lamp power supply system with trigger pre-burning device and operation method - Google Patents
Pulse xenon lamp power supply system with trigger pre-burning device and operation method Download PDFInfo
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- CN108684123B CN108684123B CN201810349546.6A CN201810349546A CN108684123B CN 108684123 B CN108684123 B CN 108684123B CN 201810349546 A CN201810349546 A CN 201810349546A CN 108684123 B CN108684123 B CN 108684123B
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Abstract
The invention discloses a xenon lamp power supply system with a triggering pre-burning device and a power supply system operation method, wherein the system adopts a triggering pre-burning scheme based on a magnetic switch mode, and the power supply system comprises a master controller M1, a direct-current power supply branch, a discharge protection branch, a pulse forming branch, a triggering pre-burning branch, a discharge switch tube driving branch, a data acquisition branch and a xenon lamp load X1; the output end of the master controller M1 is connected with the input ends of the direct-current power supply branch, the protection discharge branch, the pulse forming branch and the triggering pre-burning branch, the input end of the master controller M1 is connected with the output end of the data acquisition branch, and the triggering pre-burning branch is used for providing pre-burning current according to triggering signals so as to detect the state of the xenon lamp. The technical scheme provided by the invention can prolong the service life of the xenon lamp, reduce electromagnetic interference, improve the optical stability between pulses and monitor the working states of the xenon lamp and the system in time.
Description
Technical Field
The invention relates to the field of intersection of a pulse power technology and a laser technology, in particular to a pulse xenon lamp power supply system with a trigger pre-burning device and an operation method, which can be applied to a laser amplifier.
Background
A pulsed xenon lamp is a device that converts electrical energy into radiation energy by means of a pulsed discharge, the energy stored on a capacitor can be discharged in the form of a gas discharge through a xenon lamp tube in a very short time, while a high-temperature plasma is established in the lamp and high-brightness radiation is produced. The laser has the advantages of strong load capacity, good laser light speed quality, high pumping efficiency and the like, and is widely applied to the pumping source of the solid laser.
At present, there are two main methods related to manufacturing pulse xenon lamp power sources at home and abroad: one is a technical scheme of combining high-voltage triggering with capacitor energy storage discharging; and secondly, a technical scheme of pre-ionization combined with capacitor energy storage discharge is adopted. The two prior arts have corresponding defects, wherein the pulse xenon lamp in the first scheme has the defects of easy burst, short service life, poor stability, poor anti-interference performance and the like; the second solution has the disadvantages of complex structure, poor stability of optical output between pulses, and the like.
Disclosure of Invention
In order to overcome the defects of the pulse xenon lamp power supply in the prior art, the invention provides a xenon lamp power supply system with a triggering pre-burning device, which adopts a triggering pre-burning scheme based on a magnetic switch mode, can prolong the service life of a xenon lamp, reduce electromagnetic interference, improve the optical stability between pulses and can monitor the working states of the xenon lamp and the system in time.
The technical scheme adopted by the invention is as follows:
a pulse xenon lamp power supply system with a trigger pre-burning device comprises a master controller M1, a direct current power supply branch, a discharge protection branch, a pulse forming branch, a trigger pre-burning branch, a data acquisition branch and a xenon lamp load X1; the output end of the master controller M1 is connected with the input ends of the direct-current power supply branch, the protection discharge branch, the pulse forming branch and the triggering pre-burning branch, and the input end of the master controller M1 is connected with the output end of the data acquisition branch.
Further, the dc power supply branch is configured to generate a dc charging current according to the control signal; the discharge protection branch is used for controlling connection and interruption of circuit energy storage energy discharge; the pulse shaping branch is used for generating a pulse signal and supplying the pulse signal to a system load; the data acquisition branch is used for acquiring current data in the loop and feeding the acquired current data back to the master controller M1; the trigger pre-burning branch is used for providing pre-burning current according to the trigger signal so as to detect the state of the xenon lamp X1.
Further, the direct current branch comprises a charging control unit M2 and a direct current charger DC, and the charging control unit M2 is connected with a control end of the direct current charger DC, so as to control the start and stop of the direct current charger DC;
the bleeder protection branch comprises a bleeder control unit M3, a bleeder switch K1 and a bleeder resistor R2, wherein the bleeder control unit M3 is connected with the control end of the bleeder switch K1, and the opening and closing of the bleeder switch K1 are controlled by a bleeder control unit M3; the data acquisition branch comprises a data acquisition unit M5, a Hall current loop I1 and a sampling resistor, wherein the data acquisition unit M5 respectively acquires a current value passing through the Hall current loop I1 and a voltage value on the sampling resistor;
the pulse shaping branch comprises a discharge switch driving unit M4, an energy storage capacitor C1, a discharge switch tube K2, a wave-modulating inductor L1 and a transmission cable T1;
the triggering pre-burning branch comprises a pre-burning unit M6, a triggering unit M7 and a magnetic switch L2; the pre-burning unit M6 is a circuit unit for providing direct current; the trigger unit M7 is a high-voltage trigger circuit or a high-voltage trigger unit, and is configured to generate a trigger pulse with a certain pulse width and a certain amplitude according to a trigger signal of the master controller M1, and provide the trigger pulse to the primary side of the magnetic switch L2, so that the secondary side of the magnetic switch L2 boosts a high-voltage pulse with a certain voltage value.
Further, when the bleeder switch K1 is in a normally closed state, the bleeder resistor R2, the protection resistor R3, and the protection diode D2 are connected, and form a bleeder circuit with the energy storage capacitor C1;
when the bleeder switch K1 is in a disconnected state, the direct current charger DC is connected with the energy storage capacitor C1, and the charging control unit M2 controls the direct current charger DC to charge the energy storage capacitor C1;
when the energy storage capacitor C1 is fully charged, the discharge switch driving unit M4 is a circuit unit that generates a driving signal capable of turning on the discharge switch tube K2, and when the discharge switch tube K2 is turned on, the energy stored in the energy storage capacitor C1 is output after passing through the wave modulating inductor L1 and the transmission cable T1 in sequence;
the ground output end of the transmission cable T1 is connected through the hall current loop I1, and the hall current loop I1 is connected with the data acquisition unit M5, thereby transmitting the acquisition current of the hall current loop I1 to the data acquisition unit M5.
Further, the data acquisition unit M5 is a signal data processing circuit unit that uses an analog-to-digital conversion chip AD574 as a core device, the charging control unit M2 is a control circuit unit that is formed by a PWM generation chip SG 1, the bleeding control unit M3 is a circuit unit that is formed by a relay, and the hall current loop I1 is a Rogowsi coil; the pre-burning unit 6 is a direct current source or a direct current generating circuit; the trigger unit M7 is a high-voltage circuit unit for generating a trigger pulse.
In another aspect, the invention provides an operation method of a pulse xenon lamp power supply system based on any one of claims 1 to 5, wherein the operation method comprises the following steps:
step S1, initializing a system, namely, firstly, initializing the master controller M1 and each control unit, and setting a charging voltage set value of a direct current charger DC and an output current set value of a precombustion unit M6;
step S2, starting a triggering pre-burning branch to enable the xenon lamp X1 to enter a pre-burning steady state;
step S3, judging the state of the xenon lamp according to the information collected by the data collecting unit M5, and judging whether the xenon lamp is in a normal working state;
step S4, starting a charging branch, disconnecting a normally closed discharge switch K1 of a discharge protection branch, and starting a constant-current charger DC to charge an energy storage capacitor C1;
step S5, when it is monitored that the charging voltage on the energy storage capacitor C1 reaches a set value, the discharge switch driving unit M4 controls to turn on the discharge switch tube K2, and the energy on the energy storage capacitor C1 is released through the pulse shaping loop and transmitted to the xenon lamp X1;
and step S6, the current output by the xenon lamp X1 passes through the Hall current loop I1, is collected by the data collection unit M5 and fed back to the main controller M1 for interpretation, and the main controller M1 judges and monitors the running state of the circuit of the whole system according to the discharge current waveform collected by the data collection unit M5 and prompts the detection of the system when the system is abnormal.
Further, the start triggering pre-burning branch sends a pre-burning signal through the master controller M1 to enable the pre-burning unit M6 to start working, and after a certain time delay, a triggering signal is provided to the triggering unit M7, the triggering unit M7 starts starting after receiving the triggering signal and provides a high voltage to the magnetic switch L2 so as to generate a high voltage on the secondary side of the magnetic switch L2, and further rapidly reduce the impedance of the xenon lamp X1, and meanwhile, the pre-burning unit M6 provides a maintaining current for the magnetic switch L2 and the pulse xenon lamp X1, and the current can saturate the magnetic switch L2, and at this time, the xenon lamp X1 enters a pre-burning steady state.
Further, after the pre-burning triggering branch is started, the data acquisition unit M5 starts to acquire the output current of the xenon lamp and sends the acquired current data to the master controller M1 for monitoring, when the acquired current meets a preset condition, the xenon lamp is in a normal working state, the step S4 is continued, and when the acquired current does not meet the preset condition, the xenon lamp is in an abnormal state, a circuit needs to be disconnected, and the xenon lamp needs to be checked;
further, before the constant-current charger DC is started to charge, the bleed-off switch K1 needs to be turned off by the bleed-off control unit M3, and at this time, the constant-current charger DC is communicated with the energy storage capacitor C1 to form a charging loop, so as to start to continuously charge the energy storage capacitor C1.
Specifically, after the master controller M1 sends a discharge signal through the discharge switch driving unit M4 to turn on the switching tube K2, the energy stored in the energy storage capacitor C1 is discharged to the xenon lamp X1 through the wave-modulating inductor L1, the saturated secondary side of the magnetic switch L2 and the cable T1.
Further, the operation method further includes step S7, determining whether there is a repetition frequency, if yes, returning to step S4 and repeating the charging and discharging process of the power supply system, otherwise, ending the operation.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. compared with the traditional charging method, the technical scheme of the invention adopting the belt-triggered pre-burning device can effectively prolong the service life of the xenon lamp and keep the working stability of the xenon lamp;
2. the technical scheme provided by the invention is not complex, and has the advantages of reducing electromagnetic interference in a circuit, improving the optical stability between pulses and the like.
3. The technical scheme provided by the invention can monitor the working state of the xenon lamp in real time, and feed back the working state of the xenon lamp in time, and has important application in the field of pulse power application.
Drawings
Fig. 1 is a schematic structural diagram of a pulsed xenon lamp power supply system with a triggering pre-burning system provided by the invention.
Fig. 2 is a flow chart of the operation of the system of fig. 1.
Fig. 3 is a graph of a trigger voltage waveform for the system of fig. 1.
Fig. 4 is a graph of a charging voltage waveform for the system of fig. 1.
Fig. 5 is a waveform diagram of a discharge current of the system of fig. 1.
The symbols in the figure are illustrated as follows: a DC-DC charger; r1-current limiting resistor; d1, D2-high voltage protection diode; r2-bleeder resistance; r3-protection resistance; k1 — bleeder switch; c1-storage capacitor; r4, R5-voltage dividing resistors; k2-discharge switch tube; l1-wave-tuning inductance; I1-Hall current loop; l2-magnetic switch; t1-transmission cable; x1-xenon lamp load; m1-general controller; m2-charge control unit; m3-bleeding control unit; m4-discharge switch drive unit; m5-data acquisition unit; m6-precombustion unit; m7-trigger cell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Embodiment 1 is a pulsed xenon lamp power supply system with a triggering pre-burning device as shown in fig. 1, which includes a main controller M1, a dc power supply branch, a discharge protection branch, a pulse shaping branch, a triggering pre-burning branch, a data acquisition branch, and a xenon lamp load X1;
the output end of the master controller M1 is connected with the input ends of the direct-current power supply branch, the protection discharge branch, the pulse forming branch and the triggering pre-burning branch, and the input end of the master controller M1 is connected with the output end of the data acquisition branch;
the direct current power supply branch circuit is used for generating direct current charging current according to the control signal; the direct current branch circuit consists of a charging control unit M2, a direct current charger DC, a current limiting resistor R1 and a high-voltage protection diode D1, wherein the charging control unit M2 is connected with the control end of the direct current charger DC so as to control the starting and stopping of the direct current charger DC; in one embodiment, the charging control unit M2 is a control circuit unit constituted by a PWM generating chip SG 3525.
The bleeder protection branch is used for controlling connection and interruption of circuit energy storage energy bleeder, and consists of a bleeder control unit M3, a bleeder switch K1, a bleeder resistor R2, a protective resistor R3 and a protective diode D2, wherein the bleeder control unit M3 is connected with a control end of the bleeder switch K1, and the opening and closing of the bleeder switch K1 are controlled by the bleeder control unit M3; in one embodiment, the bleeding control unit M3 is a circuit unit constituted by a relay.
The pulse forming branch circuit is used for generating a pulse signal and supplying the pulse signal to a system load, and consists of a discharge switch drive M4, an energy storage capacitor C1, a discharge switch tube K2, a wave-regulating inductor L1 and a transmission cable T1;
when the bleeder switch K1 is in a normally closed state, the bleeder resistor R2, the protection resistor R3 and the protection diode D2 are connected and form a bleeder circuit with the energy storage capacitor C1, when the bleeder switch K1 is in a disconnected state, the direct current charger DC is connected with the energy storage capacitor C1, and the charging control unit M2 controls the direct current charger DC to charge the energy storage capacitor C1; when the energy storage capacitor C1 is fully charged, the discharge switch driving unit M4 is a circuit unit that generates a driving signal capable of turning on the discharge switch tube K2, and when the discharge switch tube K2 is turned on, the energy stored in the energy storage capacitor C1 is output after passing through the wave modulating inductor L1 and the transmission cable T1 in sequence;
the data acquisition branch is used for acquiring current data in the loop and feeding the acquired current data back to the master controller M1, and the data acquisition branch consists of a data acquisition unit M5, a Hall current loop I1, a sampling resistor R4 and a sampling resistor R5; in one embodiment, the data acquisition unit M5 is a signal data processing circuit unit with an analog-to-digital conversion chip AD574 as a core device; the energy storage capacitor C1 is a metallized film capacitor, and the discharge switch tube K2 is a solid switch or an ignition tube or a gas switch; the high-voltage end of the pulse xenon lamp X1 is connected to the core wire of a long-distance transmission cable T1; the low voltage terminals are connected to a common ground point of the power supply through the cable shield.
In one embodiment, the hall current loop I1 is a Rogowsi coil, which is not limited by the present invention;
the ground output end of the transmission cable T1 is connected to pass through the hall current loop I1, and the hall current loop I1 is connected to the data acquisition unit M5, so that the acquisition current of the hall current loop I1 can be transmitted to the data acquisition unit M5.
The triggering pre-burning branch is used for providing pre-burning current according to a triggering signal so as to detect the state of the xenon lamp X1, and the triggering pre-burning branch consists of a pre-burning unit M6, a triggering unit M7 and a magnetic switch L2; the pre-combustion unit M6 is an electrical circuit unit for providing a direct current, in one embodiment the pre-combustion unit 6 is a direct current source, in another embodiment the pre-combustion unit 6 is a direct current generating circuit; the trigger unit M7 is a high-voltage trigger circuit or a high-voltage trigger unit, and is used for generating a trigger pulse with a pulse width of 5 mus and an amplitude of 310V according to a trigger signal of the master controller M1, and providing the trigger pulse to the primary side of the magnetic switch L2, so that the voltage of the secondary side of the magnetic switch L2 is boosted to 12kV high-voltage pulse; in one embodiment, the trigger unit M7 is a circuit unit including a circuit for generating the trigger pulse.
Example 2
Embodiment 2 is a method of operating a pulsed xenon lamp power supply system with a trigger pre-burner, which may be the power supply system of any of embodiment 1, the method comprising the steps of:
step S1, initializing a system, namely, firstly, initializing the master controller M1 and each control unit, and setting a charging voltage set value of a direct current charger DC and a charging current set value of a precombustion unit M6;
step S2, starting a triggering pre-burning branch to enable the xenon lamp X1 to enter a pre-burning steady state;
the starting triggering pre-burning branch is characterized in that a pre-burning signal is sent by a master controller M1 to enable a pre-burning unit M6 to start working, a trigger signal is sent to a trigger unit M7 after a certain time delay, the trigger unit M7 starts starting after receiving the trigger signal and provides high-voltage for a magnetic switch L2 so as to generate high voltage on a secondary side of a magnetic switch L2, the high voltage is added at two ends of a xenon lamp to enable the xenon lamp to glow, the impedance of the xenon lamp X1 is rapidly reduced, meanwhile, the pre-burning unit M6 provides a maintenance current of one hundred milliamperes for the pulse xenon lamp, the current can enable the magnetic switch L2 to be saturated, and at the moment, the xenon lamp X1 enters a pre-burning stable state;
it should be noted that the magnetic switch L2 is a saturable transformer, and the inductance of the secondary side before saturation is relatively large, which is equivalent to switch off; after saturation, the inductance value of the secondary side sharply decreases, which is equivalent to switch on;
step S3, judging the state of the xenon lamp according to the information collected by the data collecting unit M5, and judging whether the xenon lamp is in a normal working state;
after the triggering pre-burning circuit is started, the data acquisition unit M5 starts to acquire the output current of the xenon lamp and sends the acquired current data to the master controller M1 for monitoring, when the acquired current meets a preset condition, the xenon lamp is in a normal working state, the step S4 is continued, and when the acquired current does not meet the preset condition, the xenon lamp is in an abnormal state, the circuit needs to be disconnected and the xenon lamp needs to be checked;
in one embodiment, the preset condition is a preset threshold or a threshold range, or the collected current is maintained within a threshold range within a certain duration, which is not limited in the present invention, so as to detect the state of the xenon lamp based on the judgment result of the current;
step S4, starting a charging branch, disconnecting a normally closed discharge switch K1 of a discharge protection branch, and starting a constant-current charger DC to charge an energy storage capacitor C1;
before the constant-current charger DC is started to charge, the bleed-off switch K1 needs to be disconnected through the bleed-off control unit M3, at this time, the constant-current charger DC is communicated with the energy storage capacitor C1 to form a charging loop, and the energy storage capacitor C1 starts to be charged continuously.
Step S5, when it is monitored that the charging voltage on the energy storage capacitor C1 reaches a set value, the discharge switch driving unit M3 controls to turn on the discharge switch tube K2, and then the energy on the energy storage capacitor C1 is released through the pulse shaping circuit and transmitted to the xenon lamp X1, specifically, after the master controller M1 sends a discharge signal through the discharge switch driving unit M4 to turn on the switch tube K2, the energy stored in the energy storage capacitor C1 is discharged to the xenon lamp X1 through the wave modulation inductor L1, the secondary side of the saturated magnetic switch L2, and the cable T1.
Step S6, the current output by the xenon lamp X1 passes through the Hall current loop I1, is collected by the data collection unit M5 and fed back to the main controller M1 for interpretation, the main controller M1 judges and monitors the running state of the circuit of the whole system according to the discharge current waveform collected by the data collection unit M5, and the detection of the system is prompted when the system is abnormal;
when the system normally operates, the acquired discharge current waveform conforms to a certain rule, and when the acquired discharge current waveform does not meet the certain rule or condition, the load xenon lamp X1 is abnormal.
In addition, the operation method may further include step S7, determining whether there is a repetition frequency, if yes, returning to step S4 and repeating the charging and discharging process of the power supply system, otherwise, ending the operation.
Example 3:
in this embodiment, to illustrate the operation method of the pulse xenon lamp power supply system and the operation flow of the circuit based on a specific circuit, the pulse xenon lamp power supply system is the same as the power supply system in any of the foregoing embodiments, the capacity of the energy storage capacitor C1 is 350 μ F, the inductance of the wave-tuning inductor L1 is 90 μ F, the discharge switch tube K2 is a thyristor, the inductance of the magnetic switch L2 before saturation is 7mH, 20 μ F after saturation, and the cable T1 is a coaxial cable.
The specific circuit operates as follows:
firstly, the master controller M1 and each control unit are initialized, the constant current output of the DC motor DC is set to be 200mA, the voltage of the charging set value is set to be 3kV, and the constant current output of the pre-burning module is set to be 150 mA. Then, a master controller M1 sends out a precombustion signal to enable a precombustion unit M6 to start working and output current, after a certain time delay, a trigger signal is sent to a trigger unit M7 through a master controller M1, the trigger unit M7 starts starting and outputs high-voltage, the high-voltage shown in figure 3 is generated on the secondary side of a magnetic switch L2, the impedance of a xenon lamp X1 is sharply reduced at the moment, then the precombustion unit M6 provides 150mA maintaining current for a pulse xenon lamp X1, the current can saturate a magnetic switch L2, and the inductance of the current is reduced from 7mH to 20 muF; when the data acquisition unit M5 detects the maintenance current output by the xenon lamp, the master controller M1 sends a charging instruction to the charging control unit M2, the charging control unit M2 controls the direct current charger DC to perform constant current charging on the energy storage capacitor C1, and when the voltage on the energy storage capacitor C1 reaches 3kV, the charging stops, and the charging voltage waveform is shown in fig. 4; the master controller M1 sends a discharge command through the discharge switch driving unit M4 to turn on the discharge switch tube K2, the energy stored in the energy storage capacitor C1 is discharged to the xenon lamp X1 through the wave-modulating inductor L1, the secondary side of the saturated magnetic switch L2 and the cable T1, the discharge current output by the xenon lamp X1 passes through the hall current loop I1 and then is fed back to the master controller M1 through the data acquisition unit M5 for interpretation, and the discharge current waveform is shown in fig. 5. And the master controller M1 judges and monitors whether the xenon lamp in the power supply system normally operates according to whether the discharge current accords with a certain rule.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (9)
1. A pulse xenon lamp power supply system with a trigger pre-burning device is characterized by comprising a master controller (M1), a direct-current power supply branch, a discharge protection branch, a pulse forming branch, a trigger pre-burning branch, a data acquisition branch and a xenon lamp load (X1); the output end of the master controller (M1) is connected with the input ends of the direct-current power supply branch, the discharge protection branch, the pulse forming branch and the triggering pre-burning branch, and the input end of the master controller (M1) is connected with the output end of the data acquisition branch;
the direct current power supply branch circuit is used for generating direct current charging current according to the control signal; the discharge protection branch is used for controlling connection and interruption of circuit energy storage energy discharge; the pulse shaping branch is used for generating a pulse signal and supplying the pulse signal to a system load; the data acquisition branch is used for acquiring current data in the loop and feeding the acquired current data back to the master controller (M1); the trigger pre-burning branch is used for providing pre-burning current according to a trigger signal so as to detect the state of a xenon lamp (X1);
the triggering pre-burning branch comprises a pre-burning unit (M6), a triggering unit (M7) and a magnetic switch (L2); the pre-combustion unit (M6) is a circuit unit for providing a direct current; the trigger unit (M7) is a high-voltage trigger circuit or a high-voltage trigger unit, and is used for generating trigger pulses with a certain pulse width and a certain amplitude according to trigger signals of a master controller (M1) and providing the trigger pulses to the primary side of the magnetic switch (L2), so that the secondary side of the magnetic switch (L2) boosts the high-voltage pulses with a certain voltage value, the impedance of the xenon lamp (X1) is then reduced rapidly, meanwhile, the pre-burning unit (M6) provides a maintaining current for the magnetic switch (L2) and the pulse xenon lamp (X1), the current can saturate the magnetic switch (L2), and the xenon lamp (X1) enters a pre-burning steady state at the moment.
2. The pulsed xenon lamp power supply system with the trigger precombustion device according to claim 1, wherein the direct-current power supply branch comprises a charging control unit (M2) and a direct-current charger (DC), and the charging control unit (M2) is connected with a control end of the direct-current charger (DC) so as to control the start and stop of the direct-current charger (DC);
the leakage protection branch comprises a leakage control unit (M3), a leakage switch (K1) and a leakage resistor (R2), wherein the leakage control unit (M3) is connected with the control end of the leakage switch (K1), and the opening and closing of the leakage switch (K1) are controlled through a leakage control unit (M3);
the data acquisition branch comprises a data acquisition unit (M5), a Hall current loop (I1) and a sampling resistor, wherein the data acquisition unit (M5) respectively acquires a current value passing through the Hall current loop (I1) and a voltage value on the sampling resistor;
the pulse shaping branch comprises a discharge switch driving unit (M4), an energy storage capacitor (C1), a discharge switch tube (K2), a wave modulation inductor (L1) and a transmission cable (T1); when the energy storage capacitor (C1) is fully charged, the discharge switch driving unit (M4) is a circuit unit which generates a driving signal capable of enabling the discharge switch tube (K2) to be conducted, and when the discharge switch tube (K2) is conducted, the energy stored on the energy storage capacitor (C1) is output after sequentially passing through the wave modulation inductor (L1) and the transmission cable (T1).
3. The power supply system of the pulse xenon lamp with the trigger pre-burning device according to claim 2, wherein when the discharge switch (K1) is in a normally closed state, the discharge resistor (R2), the protection resistor (R3) and the protection diode (D2) are connected to form a discharge loop with the energy storage capacitor (C1);
when the bleeder switch (K1) is in a disconnected state, the direct current charger (DC) is connected with the energy storage capacitor (C1), and the charging control unit (M2) controls the direct current charger (DC) to charge the energy storage capacitor (C1);
the grounding output end of the transmission cable (T1) is connected and penetrates through the Hall current loop (I1), and the Hall current loop (I1) is connected with the data acquisition unit (M5), so that the acquisition current of the Hall current loop (I1) is transmitted to the data acquisition unit (M5).
4. The xenon pulse lamp power supply system with the trigger pre-burning device as claimed in claim 2, wherein the data acquisition unit (M5) is a signal data processing circuit unit with an analog-to-digital conversion chip AD574 as a core device, the charging control unit (M2) is a control circuit unit composed of a PWM generation chip SG 1, the discharge control unit (M3) is a circuit unit composed of a relay, and the hall current loop (I1) is a Rogowsi coil; the pre-burning unit (M6) is a direct current source or a direct current generating circuit; the trigger unit (M7) is a high-voltage circuit unit for generating a trigger pulse.
5. An operation method of a pulse xenon lamp power supply system based on any one of claims 2 to 4, wherein the operation method comprises the following steps:
step S1, initializing the system, firstly initializing the master controller (M1) and each control unit, and setting the charging voltage set value of the direct current charger (DC) and the output current set value of the precombustion unit (M6);
step S2, starting and triggering the pre-burning branch to enable the xenon lamp (X1) to enter a pre-burning steady state;
step S3, judging the state of the xenon lamp according to the information collected by the data collecting unit (M5), and judging whether the xenon lamp is in a normal working state;
step S4, starting a charging branch, disconnecting a normally closed bleeder switch (K1) of a bleeder protection branch, and starting a direct current charger (DC) to charge an energy storage capacitor (C1);
step S5, when the charging voltage on the energy storage capacitor (C1) is monitored to reach a set value, the discharge switch driving unit (M4) controls to turn on the discharge switch tube (K2), and then the energy on the energy storage capacitor (C1) is released through the pulse shaping loop and transmitted to the xenon lamp (X1);
and S6, the current output by the xenon lamp (X1) passes through the Hall current loop (I1), is collected by the data collection unit (M5) and is fed back to the main controller (M1) for interpretation, the main controller (M1) judges and monitors the running state of the circuit of the whole system according to the discharge current waveform collected by the data collection unit (M5), and the detection of the system is prompted when the system is abnormal.
6. A method for operating a pulse xenon lamp power supply system according to claim 5, characterized in that the start triggering pre-burning branch is a pre-burning signal sent by the master controller (M1) to start the pre-burning unit (M6), after a certain time delay, a triggering signal is given to the triggering unit (M7), the triggering unit (M7) starts to start and provides a high voltage to the magnetic switch (L2) to generate a high voltage at the secondary side of the magnetic switch (L2), so that the impedance of the xenon lamp (X1) is reduced sharply, and the pre-burning unit (M6) provides a maintaining current to the magnetic switch (L2) and the pulse xenon lamp (X1), wherein the maintaining current can saturate the magnetic switch (L2), and the xenon lamp (X1) enters a steady state.
7. An operation method of the pulse xenon lamp power supply system according to claim 6, characterized in that after the pre-burning triggering branch is started, the data acquisition unit (M5) starts to acquire the output current of the xenon lamp and sends the acquired current data to the master controller (M1) for monitoring, when the acquired current satisfies a preset condition, the xenon lamp is in a normal working state, the step S4 is continued, and when the acquired current does not satisfy the preset condition, the xenon lamp is in an abnormal state, and the circuit needs to be disconnected and the xenon lamp needs to be checked.
8. A method for operating a pulse xenon lamp power supply system according to claim 6, characterized in that before starting the direct current charger (DC) for charging, the discharge control unit (M3) is used to disconnect the discharge switch (K1), and at this time, the constant current charger (DC) is connected with the energy storage capacitor (C1) to form a charging loop, and the energy storage capacitor (C1) is started to be charged continuously: specifically, after a master controller (M1) sends a discharge signal through a discharge switch driving unit (M4) to enable a switching tube (K2) to be conducted, energy stored in an energy storage capacitor (C1) is discharged to a xenon lamp (X1) through a wave modulation inductor (L1), a saturated magnetic switch (L2) secondary side and a cable (T1).
9. The method of claim 6, further comprising step S7, determining whether there is a repetition frequency, if so, returning to step S4 and repeating the charging and discharging process of the power system, otherwise, ending the operation.
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| CN111001090A (en) * | 2019-12-09 | 2020-04-14 | 中国科学院苏州生物医学工程技术研究所 | Xenon lamp discharge method, circuit and physical therapeutic apparatus |
| CN112543528A (en) * | 2020-12-17 | 2021-03-23 | 中电科仪器仪表(安徽)有限公司 | Xenon lamp triggering device and control method |
| CN113079605A (en) * | 2021-05-12 | 2021-07-06 | 吉林省科英医疗激光有限责任公司 | High-efficiency reliable high-frequency large-current pulse type xenon lamp pre-burning system |
| CN113543398B (en) * | 2021-09-14 | 2021-11-30 | 中国工程物理研究院流体物理研究所 | Device and method for improving reliability of high-power pulse xenon lamp light source |
| CN116667305B (en) * | 2023-07-31 | 2023-10-20 | 北京凌空天行科技有限责任公司 | Method for completely isolating secondary energy storage initiating explosive device activation circuit and timing control method |
| CN117294132B (en) * | 2023-11-23 | 2024-03-01 | 深圳市鼎阳科技股份有限公司 | Power supply circuit and switching method thereof |
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| CA2738283A1 (en) * | 2011-04-28 | 2012-10-28 | Queen's University At Kingston | Digital controller for an electronic ballast |
| CN104244545A (en) * | 2014-09-15 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Triggering pre-burning device with xenon lamp |
| CN105445543B (en) * | 2015-12-17 | 2018-09-14 | 厦门法博科技有限公司 | Xenon flash lamp power-sensing circuit and its method for laser welding system |
| CN205263193U (en) * | 2015-12-17 | 2016-05-25 | 厦门法博科技有限公司 | A pulse xenon lamp power detection circuit for laser welding system |
| CN208016090U (en) * | 2018-04-18 | 2018-10-26 | 中国工程物理研究院激光聚变研究中心 | A kind of pulse xenon lamp power source device of band triggering pre-burning device |
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