CN109739077B - Safe starting method and circuit system of yellow flashing unit of annunciator system - Google Patents
Safe starting method and circuit system of yellow flashing unit of annunciator system Download PDFInfo
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- CN109739077B CN109739077B CN201811429110.4A CN201811429110A CN109739077B CN 109739077 B CN109739077 B CN 109739077B CN 201811429110 A CN201811429110 A CN 201811429110A CN 109739077 B CN109739077 B CN 109739077B
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Abstract
The invention relates to the field of traffic signal system control, in particular to a safe starting method and a circuit system of a yellow flashing unit of a signal system. The invention respectively monitors the annunciator system through the two controllers and shares the communication fault, thereby avoiding the situation that the yellow flashing unit cannot be started due to the fault of the controller in the process of controlling the system by adopting the single main controller. Two dynamic frequency signals respectively generated by the two controllers are used as effective control signals to control and generate driving signals, so that the situation that in the prior art, when a circuit system of a yellow flashing unit breaks down when a fixed level signal is used as an effective signal, the level is inverted to a high level or a low level is avoided, and the safe and stable operation of a signal machine system is ensured. In addition, the invention also discloses a corresponding circuit system, which comprises: control circuit and drive circuit, wherein, control circuit includes again: a third control signal generation sub-circuit and a drive signal generation sub-circuit.
Description
Technical Field
The invention relates to the field of traffic signal system control, in particular to a safe starting method and a circuit system of a yellow flashing unit of a signal system.
Background
The correct start of the yellow flashing unit circuit is an effective measure for avoiding accidents after the traffic signal system fails, and the correct and reliable triggering of the yellow flashing unit is the final guarantee of the traffic system. The mode of realizing yellow flashing unit starting in the existing traffic signal system is as follows: the detection unit is adopted to detect faults, the main control unit controls the faults, and effective control signals are fixed high levels or low levels. Under the control mode, when the main control unit has a fault, such as a dead halt; or the yellow flashing unit control circuit system has a fault, if the effective control level is inverted to one side, namely the yellow flashing unit control circuit system always keeps a high level or a low level; when the two situations occur, the yellow flashing unit can not be started smoothly, and further traffic danger is caused.
Disclosure of Invention
Aiming at the problems, the invention adopts the double processors to realize the triggering of the yellow flashing unit starting command on the premise of not increasing the cost, and adopts the dynamic frequency signal as an effective control signal, thereby avoiding the high level and low level situations of the yellow flashing unit circuit system reversing after the fault. According to the invention, the two dynamic frequency signals generated by the dual processor are detected, and the generation of the two dynamic frequency signals is used for controlling the generation of the driving signal, so that the starting of the yellow flashing unit is controlled; when any one of the dual processors detects a system failure or any one of the dual processors has a communication failure, the dynamic frequency signal disappears, and the driving signal also disappears, so that the yellow flashing unit is triggered to start. In addition, in order to avoid the problem that the control of a single processor fails or one of the processors is detected by mistake, the dual processors carry out fault monitoring and communicate with each other, so that the system fault detected by the other processor is acquired and verified, and the safe and stable operation of the system is ensured. The invention specifically comprises the following contents:
according to one aspect of the invention, the invention discloses a safe starting method of a yellow flashing unit of a signal system, which comprises the following steps: detecting a signal machine system through a first controller and a second controller respectively, sharing the detected system faults, and further verifying the system faults; generating a first control signal and a second control signal by a first controller and a second controller respectively, and combining the first control signal and the second control signal by a third signal generation sub-circuit to generate a third control signal; and generating a driving signal by using the third control signal and the driving signal generation sub-circuit, and further receiving the driving signal through a driving circuit to realize the control of the starting trigger of the yellow flashing unit.
Further, the generation of the third control signal is controlled by the generation frequency of the first control signal and the second control signal.
Further, the system failure comprises: software faults and hardware faults of the annunciator system, wherein the software faults specifically include: system crash restart timeout and system communication failure; the hardware failure specifically includes: the device fault that can be monitored and discerned, relay switch can't open or close normally.
Further, when the system fault occurs, the first controller and/or the second controller stops generating the corresponding control signal, so that the third control signal disappears, the driving circuit operates, and the start of the yellow flashing unit is triggered.
According to another aspect of the present invention, a circuit system for implementing the method for safely starting the yellow flash unit of the annunciator system is disclosed, which includes: the control circuit comprises a third control signal generation sub-circuit and a driving signal generation sub-circuit, and the third control signal generation sub-circuit and the driving signal generation sub-circuit are connected through a third optical coupler; the driving circuit comprises two relay switches and two corresponding relay coils thereof, wherein the two relay coils introduce the driving signal in a parallel connection mode.
Preferably, the third control signal generation sub-circuit includes: the first link specifically includes: the light-emitting device of the first optical coupler comprises a first power end, a light-emitting device of the first optical coupler, a first resistor and a first controller which are sequentially connected, wherein the positive electrode end of the light-emitting device of the first optical coupler is connected with the first power end, and the negative electrode end of the light-emitting device of the first optical coupler is connected with the first resistor; and the second link specifically comprises: the second power end, the photosensitive device of the first optical coupler, the second resistor, the first capacitor, the first diode, the third resistor, the light emitting device of the third optical coupler, the first field effect transistor and the first ground potential end are sequentially connected, wherein the positive end of the first diode is connected with the first capacitor, and the negative end of the first diode is connected with the third resistor; the positive terminal of the photosensitive device of the third optical coupler is connected with the third resistor, the negative terminal of the photosensitive device of the third optical coupler is connected with the drain terminal of the first field effect transistor, and the source terminal of the first field effect transistor is connected with the first ground potential terminal; and the third link specifically comprises: the first power supply end, the photosensitive device of the second optical coupler, the fourth resistor and the second controller are sequentially connected, wherein the positive end of the light-emitting device of the second optical coupler is connected with the first power supply section, and the negative end of the light-emitting device of the second optical coupler is connected with the fourth resistor; and the fourth link specifically includes: the second power supply end, the photosensitive device of the second optical coupler and the base terminal of the first field effect transistor are connected in sequence; in the above, the first link and the second link are connected by the first optical coupler; the second link and the fourth link are connected through the second optical coupler; the first link and the third link are connected into the first power supply end in a parallel mode; the second link and the fourth link are connected to the second power supply end in parallel.
More preferably, the third control signal generation sub-circuit further includes: a second capacitor coupled between the first diode negative terminal and the second ground potential terminal; a second diode having an anode connected between the first capacitor and the anode terminal of the first diode, and a cathode terminal connected between the second capacitor and the second ground potential terminal; and a fifth resistor having one end connected between the photosensitive device of the second photo coupler and the second ground potential end and the other end connected between the second capacitor and the ground potential point.
Preferably, the drive signal generation sub-circuit includes: the fifth link specifically includes: the third power end, the primary side of the transformer, the second field effect transistor, the sixth resistor and the second ground potential end are connected in sequence, wherein the drain end of the second field effect crystal light is connected with the primary side of the transformer, and the source end of the second field effect crystal light is connected with the sixth resistor; and the sixth link specifically includes: the third power supply end, the seventh resistor, the photosensitive device of the third optical coupler and the second ground potential end are connected in sequence; and, the seventh link, specifically comprising: the first driving signal end, the third diode, the secondary side of the transformer and the second driving signal end; in the above, the fifth link and the sixth link are connected to the third power source end in parallel; the fifth link and the seventh link interact through the primary side and the secondary side of the transformer.
More preferably, the driving signal generating sub-circuit further includes: a triode coupled between the third capacitor and the second ground potential terminal, wherein a collector of the triode is connected with the third capacitor, and an emitter of the triode is connected with the second ground potential terminal; one end of the eighth resistor is connected with the base electrode of the triode, the other end of the eighth resistor is connected with the cathode end of the fourth diode, and the anode end of the fourth diode is connected between the second field effect transistor and the sixth resistor; a third capacitor having one end connected between the eighth resistor and the fourth diode and the other end connected to the second ground potential end; and one end of the fourth capacitor is connected between the cathode end of the third diode and the first driving signal end, and the other end of the fourth capacitor is connected with the second driving signal end.
Preferably, the two relay switches control the triggering of the yellow flashing unit in a series connection.
The invention has the advantages that: the annunciator system is monitored through the two controllers respectively, and system faults are shared, so that the condition that the yellow flashing unit cannot be started due to the fact that the controller breaks down in the monitoring process of one controller is avoided. Two dynamic frequency signals respectively generated by the two controllers are used as effective control signals, and the situation that the level is inverted to high level or low level when the yellow flash unit circuit system is in fault and takes a fixed level signal as an effective signal is avoided. Through adopting the triggering that two relay switch control yellow flashing units of establishing ties start, avoided because of the unable open circuit of relay node adhesion, and the unable problem that triggers yellow flashing unit start that arouses. By the mode, safe and stable operation of the annunciator system is guaranteed.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic diagram of the safety start principle of the yellow flashing unit of the invention.
Fig. 2 shows a working flow chart of the safe start-up of the yellow flashing unit of the invention.
Fig. 3 shows a control circuit schematic diagram of the yellow flashing unit safety starting circuit system of the invention.
Fig. 4 shows a schematic diagram of a driving circuit of the yellow flash unit safety starting circuit system of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The invention discloses a safe starting method of a yellow flashing unit of a signal system, which comprises the following steps: monitoring a signal machine system through a first controller and a second controller respectively, sharing the detected system faults, and further verifying the system faults; generating a first control signal and a second control signal by a first controller and a second controller respectively, and combining the first control signal and the second control signal by corresponding control circuits to generate a third control signal; and generating a driving signal through a corresponding control circuit by using the third control signal, and further triggering the starting of the yellow flashing unit through the driving signal and the corresponding driving circuit. Wherein generation of the third control signal is controlled by generation frequencies of the first and second control signals. The system failure comprises: software faults and hardware faults of the annunciator system, wherein the software faults specifically include: system crash restart timeout and system communication failure; the hardware failure specifically includes: the device fault, which can be monitored and identified, the relay contacts cannot be opened or closed normally. The process of the invention will be described with reference to the following specific figures:
fig. 1 is a schematic diagram illustrating the safety startup principle of the yellow flashing unit of the present invention. When the controller does not detect software faults or hardware faults in the annunciator system, the controller generates a dynamic frequency signal and executes a monitoring command in a circulating mode; when the controller detects a software fault or a hardware fault in the annunciator system, the controller stops the generation of the dynamic frequency signal, and further triggers the safe start of the yellow flashing unit. The yellow flashing unit is a control unit which enables the yellow traffic light to keep flashing by controlling when the traffic signal system cannot normally control the traffic signal light; once the traffic signal lamp has the yellow flashing condition, the yellow flashing unit is triggered and then can be restored only through human intervention.
Fig. 2 is a flowchart illustrating the secure booting process of the yellow flashing unit according to the present invention. Wherein, the workflow shown comprises: communication overtime fault detection: the first controller and the second controller respectively monitor system faults which are responsible for the first controller and the second controller; and in the system fault monitoring process, when the feedback of the system or equipment corresponding to the fault is not received within the set time, the corresponding system or equipment is considered to have a communication fault, a communication fault mark is set, and then a safety guide control cutting process is executed. During the communication timeout fault detection process, the following two situations can occur: firstly, the communication mark can not be set normally, so that the safe guide control cutting process can not be started normally; secondly, the communication flag is set, but the safe guide cutting process cannot be started normally. For the first situation, after communication overtime fault detection, the controller performs communication check fault detection to confirm whether the safety guide removal process is executed or not, if the communication check fault is 'yes', the safety guide removal process is not executed, and at the moment, the communication fault flag is set again, so that the safety guide control removal process is performed; and if the communication verification fault is 'no', the safe guide cutting-off process is considered to be executed. However, when the second situation occurs, the controller does not have the capability of starting the safe guiding control to cut off, and the controller analyzes the safety guiding control through a protocol at the moment and then sends the detected system fault to the opposite controller; judging whether a corresponding system fault occurs or not through the opposite controller, if so, setting a system fault mark, and executing a safe guide control cutting process; if not, carrying out self system fault detection (namely comprising the communication overtime fault detection, the communication check fault detection, the communication fault mark clearing, the protocol analysis and the receiving of opposite control sending information to judge whether the communication fault occurs); if yes, setting a system communication mark, and further executing a safe guide control cutting process; if not, the system communication fault mark is cleared, and then the safe guide control cutting process is executed. Wherein the safety guided resection procedure comprises: and stopping generating the dynamic frequency signal, and further triggering the starting of the yellow flashing unit.
The above description describes the process of the secure startup of the yellow flashing unit according to the present invention, and the following description will describe a circuit system for implementing the startup triggering of the yellow flashing unit by the first control signal and the second control signal. The circuit system comprises a control circuit and a driving circuit, and specifically comprises the following components:
fig. 3 is a schematic diagram of a control circuit of the yellow flashing unit safety start circuit system of the present invention. Wherein r1 to r8 are the first resistance to the eighth resistance, respectively; g1 to g3 are first to third optical couplers, respectively; c1 to c5 are first to fifth capacitances, respectively; j1 to j3 are first to third diodes, respectively; m1 and m2 are a first field effect transistor and a second field effect transistor, respectively. The control circuit comprises a third control signal generation sub-circuit and a driving signal generation sub-circuit, and the third control signal generation sub-circuit and the driving signal generation sub-circuit are connected through a third optical coupler; the third control signal generation sub-circuit is used for combining the first control signal and the second control signal to generate a third control signal; and the driving signal generating sub-circuit is used for generating a driving signal according to the third control signal so as to trigger the starting of the yellow flashing unit through a corresponding driving circuit.
Specifically, the third control signal generation sub-circuit includes: a first link, specifically comprising: the light-emitting device of the first optical coupler comprises a first power end, a light-emitting device of the first optical coupler, a first resistor and a first controller which are sequentially connected, wherein the positive electrode end of the light-emitting device of the first optical coupler is connected with the first power end, and the negative electrode end of the light-emitting device of the first optical coupler is connected with the first resistor; and, a second link, specifically comprising: the second power end, the photosensitive device of the first optical coupler, the second resistor, the first capacitor, the first diode, the third resistor, the light emitting device of the third optical coupler, the first field effect transistor and the first ground potential end are sequentially connected, wherein the positive end of the first diode is connected with the first capacitor, and the negative end of the first diode is connected with the third resistor; the positive terminal of the photosensitive device of the third optical coupler is connected with the third resistor, the negative terminal of the photosensitive device of the third optical coupler is connected with the drain terminal of the first field effect transistor, and the source terminal of the first field effect transistor is connected with the first ground potential terminal; and, a third link, specifically comprising: the first power supply end, the photosensitive device of the second optical coupler, the fourth resistor and the second controller are sequentially connected, wherein the positive end of the light-emitting device of the second optical coupler is connected with the first power supply section, and the negative end of the light-emitting device of the second optical coupler is connected with the fourth resistor; and, a fourth link, specifically comprising: the second power supply end, the photosensitive device of the second optical coupler and the base terminal of the first field effect transistor are connected in sequence; in the above, the first link and the second link are connected by the first optical coupler; the second link and the fourth link are connected through the second optical coupler; the first link and the third link are connected into the first power supply end in a parallel mode; the second link and the fourth link are connected to the second power supply end in parallel.
The drive signal generation sub-circuit includes: a fifth link, specifically comprising: the third power end, the primary side of the transformer, the second field effect transistor, the sixth resistor and the second ground potential end are connected in sequence, wherein the drain end of the second field effect crystal light is connected with the primary side of the transformer, and the source end of the second field effect crystal light is connected with the sixth resistor; and, a sixth link, specifically comprising: the third power supply end, the seventh resistor, the photosensitive device of the third optical coupler and the second ground potential end are connected in sequence; and, a seventh link, specifically comprising: the first driving signal end, the third diode, the secondary side of the transformer and the second driving signal end; in the above, the fifth link and the sixth link are connected to the third power source end in parallel; the fifth link and the seventh link interact through the primary side and the secondary side of the transformer.
More specifically, the third control signal generation sub-circuit further includes: a second capacitor coupled between the first diode negative terminal and the second ground potential terminal; a second diode having an anode connected between the first capacitor and the anode terminal of the first diode, and a cathode terminal connected between the second capacitor and the second ground potential terminal; and a fifth resistor having one end connected between the photosensitive device of the second photo coupler and the second ground potential end and the other end connected between the second capacitor and the ground potential point. The drive signal generation sub-circuit further includes: a triode coupled between the third capacitor and the second ground potential terminal, wherein a collector of the triode is connected with the third capacitor, and an emitter of the triode is connected with the second ground potential terminal; one end of the eighth resistor is connected with the base electrode of the triode, the other end of the eighth resistor is connected with the cathode end of the fourth diode, and the anode end of the fourth diode is connected between the second field effect transistor and the sixth resistor; a third capacitor having one end connected between the eighth resistor and the fourth diode and the other end connected to the second ground potential end; and one end of the fourth capacitor is connected between the cathode end of the third diode and the first driving signal end, and the other end of the fourth capacitor is connected with the second driving signal end.
Through the control circuit structure, the first controller and the second controller respectively generate isolated dynamic pulse frequency signals through the isolation of the optical coupler. When the first controller CPU1 generates the first control signal at the frequency, the first capacitor and the second capacitor are charged; and because of the unidirectional conduction control of the first diode and the second diode, the second capacitor generates a stable voltage signal and has certain electric energy. At this time, when the second controller (CPU2) also generates the control signal, a voltage is formed across the fifth resistor, which drives the first fet to conduct, and at this time, the third optocoupler is turned on, thereby generating a new dynamic pulse signal, i.e., the third control signal. The third signal drives the second field effect transistor through capacitive coupling, so that a primary coil of the transformer passes current, the primary coil generates magnetic field change and is coupled to a secondary coil of the transformer, the secondary coil generates stable driving voltage through third diode rectification and fifth capacitive filtering, and driving signals are generated on X1 and X2 of the terminal. In the process, the sixth resistor plays a role in limiting current, when the current passing through the primary side of the transformer exceeds a set value, the voltage applied to the two ends of the sixth resistor enables the triode connected with the sixth resistor to be conducted, and then the grid of the second field effect transistor is grounded so as to cut off the output of the second field effect transistor, so that the effective protection effect on the circuit is achieved. Obviously, the control process of the first control signal and the second control signal on the driving signal is that when any one of the control signals fails, for example, the first control signal disappears, the light emitting device of the third optocoupler stops emitting light, or the second control signal disappears, the first fet is turned off and turned on, so that the voltages at X1 and X2 will fail. In addition, when the first controller and/or the second controller are interfered, the voltage on the X1 and the X2 can be failed due to the error of the frequency of the generated first control signal and/or the second control signal, and therefore traffic hazards which can be caused when the interference which causes the command execution of the first controller and the second controller occurs are avoided.
Fig. 4 is a schematic diagram of a driving circuit of the yellow flash unit safety start circuit system according to the present invention. The driving circuit comprises two relay switches and two corresponding relay coils thereof, wherein the two relay coils introduce the driving signal in a parallel connection mode; the two relay switches control the triggering signal for starting the yellow flashing unit in a series connection mode. Through this kind of mode, avoided because of the unable open circuit of relay node adhesion, and the unable problem that triggers yellow flashing unit and start that arouses.
It should be noted that the master controller and the slave controller share the communication fault through the bus, and then verify the communication fault.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A safe starting method of a yellow flashing unit of a signal system is characterized by comprising the following steps:
detecting a signal machine system through a first controller and a second controller respectively, sharing the detected system faults, and further verifying the system faults;
generating a first control signal and a second control signal by a first controller and a second controller respectively, and combining the first control signal and the second control signal by a third signal generation sub-circuit to generate a third control signal, wherein the generation of the third control signal is controlled by the generation frequency of the first control signal and the second control signal;
and generating a driving signal by using the third control signal and the driving signal generation sub-circuit, and further receiving the driving signal through a driving circuit to realize the control of the starting trigger of the yellow flashing unit.
2. The method of claim 1, wherein the system fault comprises:
software faults and hardware faults of the annunciator system, wherein the software faults specifically include: system crash restart timeout and system communication failure; the hardware failure specifically includes: the device fault that can be monitored and discerned, relay switch can't open or close normally.
3. The method according to claim 1, wherein when the system fault occurs, the first controller and/or the second controller stops generating the corresponding control signal, so that the third control signal disappears, the driving circuit operates, and the start of the yellow flashing unit is triggered.
4. A circuit system for realizing the safety starting method of the yellow flashing unit of the signal system according to any one of claims 1 to 3, which is characterized by comprising the following steps: a control circuit and a drive circuit, wherein,
the control circuit comprises a third control signal generation sub-circuit and a driving signal generation sub-circuit, and the third control signal generation sub-circuit and the driving signal generation sub-circuit are connected through a third optical coupler;
the driving circuit comprises two relay switches and two corresponding relay coils thereof, wherein the two relay coils introduce the driving signal in a parallel connection mode.
5. The circuitry of claim 4, wherein the third control signal generation sub-circuit comprises:
the first link specifically includes: the light-emitting device of the first optical coupler comprises a first power end, a light-emitting device of the first optical coupler, a first resistor and a first controller which are sequentially connected, wherein the positive electrode end of the light-emitting device of the first optical coupler is connected with the first power end, and the negative electrode end of the light-emitting device of the first optical coupler is connected with the first resistor; and the number of the first and second groups,
the second link specifically includes: the second power end, the photosensitive device of the first optical coupler, the second resistor, the first capacitor, the first diode, the third resistor, the light emitting device of the third optical coupler, the first field effect transistor and the first ground potential end are sequentially connected, wherein the positive end of the first diode is connected with the first capacitor, and the negative end of the first diode is connected with the third resistor; the positive terminal of the photosensitive device of the third optical coupler is connected with the third resistor, the negative terminal of the photosensitive device of the third optical coupler is connected with the drain terminal of the first field effect transistor, and the source terminal of the first field effect transistor is connected with the first ground potential terminal; and the number of the first and second groups,
the third link specifically includes: the first power end, the photosensitive device of the second optical coupler, the fourth resistor and the second controller are connected in sequence, wherein the positive end of the light-emitting device of the second optical coupler is connected with the first power end, and the negative end of the light-emitting device of the second optical coupler is connected with the fourth resistor; and the number of the first and second groups,
the fourth link specifically includes: the second power supply end, the photosensitive device of the second optical coupler and the base terminal of the first field effect transistor are connected in sequence;
wherein the first link and the second link are connected by the first optical coupler; the second link and the fourth link are connected through the second optical coupler; the first link and the third link are connected into the first power supply end in a parallel mode; the second link and the fourth link are connected to the second power supply end in parallel.
6. The circuitry of claim 5, wherein said third control signal generation sub-circuit further comprises: a second capacitor coupled between the first diode negative terminal and a second ground potential terminal; a second diode having an anode connected between the first capacitor and the anode terminal of the first diode, and a cathode terminal connected between the second capacitor and the second ground potential terminal; and a fifth resistor, one end of which is connected between the photosensitive device of the second optical coupler and the second ground potential end, and the other end of which is connected between the second capacitor and a ground potential point.
7. The circuitry of claim 4, wherein the drive signal generation sub-circuit comprises:
the fifth link specifically includes: the third power end, the primary side of the transformer, the second field effect transistor, the sixth resistor and the second ground potential end are connected in sequence, wherein the drain end of the second field effect crystal light is connected with the primary side of the transformer, and the source end of the second field effect crystal light is connected with the sixth resistor; and the number of the first and second groups,
the sixth link specifically includes: the third power supply end, the seventh resistor, the photosensitive device of the third optical coupler and the second ground potential end are connected in sequence; and the number of the first and second groups,
the seventh link specifically includes: the first driving signal end, the third diode, the secondary side of the transformer and the second driving signal end;
the fifth link and the sixth link are connected to the third power supply end in a parallel mode; the fifth link and the seventh link interact through the primary side and the secondary side of the transformer.
8. The circuitry of claim 7, wherein the drive signal generation sub-circuit further comprises:
a triode coupled between a third capacitor and the second ground potential terminal, wherein a collector of the triode is connected with the third capacitor, and an emitter of the triode is connected with the second ground potential terminal;
the transistor comprises a first resistor, a second resistor and a fourth diode, wherein one end of the first resistor is connected with the base electrode of the triode, the other end of the first resistor is connected with the negative electrode end of the fourth diode, and the positive electrode end of the fourth diode is connected between a first field effect transistor and the sixth resistor;
a third capacitor having one end connected between the eighth resistor and the fourth diode and the other end connected to the second ground potential end;
and one end of the fourth capacitor is connected between the cathode end of the third diode and the first driving signal end, and the other end of the fourth capacitor is connected with the second driving signal end.
9. The circuit system of claim 4, wherein the two relay switches control the triggering of the yellow flash unit in series.
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