Multifunctional high-precision synchronous triggering device and method

Abstract

The present application belongs to the technical field of control, and particularly relates to a multifunctional high-precision synchronous trigger device and method. The method is as follows: step 1: configuration file; step 2: parsing GPS / Beidou satellite time or DC code input time to obtain parsed time; step 3: generating 3-way 1PPS, 1-way DC code and 1-way NTP network time according to the parsed time obtained in step 2; using the parsed time to perform timing triggering or waiting for an external trigger signal to be valid; and step 4: outputting a trigger signal and trigger time. The present application can realize two modes of timing triggering and external triggering, and the timing triggering time is generated by real-time parsed GPS / Beidou time or BDC code time, which is high in precision and reaches the level of ns.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of control, and particularly relates to a multifunctional high-precision synchronous triggering device and method. BACKGROUND

[0002] Weapon ignition, launching all need under certain conditions signal trigger, and time service and synchronous signal. In this background, the present application provides a multifunctional high-precision synchronous triggering method and device, which can not only analyze GPS / Beidou time or B code time to realize timing trigger, but also can realize external trigger according to external conditions, can output 3-way 1PPS synchronous signal to synchronize the devices and equipment in the system, and can provide NTP network time service mode to time service all devices. SUMMARY

[0003] The present application aims at the above problems, and provides a multifunctional high-precision synchronous triggering device and method.

[0004] The technical scheme of the present application is characterized in that:

[0005] The present application provides a multifunctional high-precision synchronous triggering device.

[0006] The multifunctional high-precision synchronous triggering device comprises an ARM control unit, and an input module and an output module connected with the ARM control unit respectively; the input module comprises a GPS / Beidou satellite access module, a DC input module, a configuration signal input module and a trigger signal input module; the output module comprises a time service output module, a transient time output module, a trigger signal output module, a BDC code output module and a modulation signal output module.

[0007] The GPS / Beidou satellite access module comprises a first BNC socket arranged on a front panel, one end of the BNC socket is connected with a GPS / Beidou satellite antenna, and the other end is connected to the ARM control unit through a GPS / Beidou satellite receiver;

[0008] The DC input module comprises a DC input socket arranged on the front panel, one end of the DC input socket is connected with a BDC input signal, and the other end is connected to the ARM control unit through a first isolation circuit;

[0009] The configuration signal input module comprises a first transient time socket arranged on a rear panel, one end of the first transient time socket is connected with a configuration signal or trigger time gigabit network, and the other end is connected to the ARM control unit through a second network PHY module;

[0010] The trigger signal input module comprises a second BNC socket arranged on the rear panel, one end of the second BNC socket is connected with a trigger signal Trigger_in, and the other end is connected to the ARM control unit through a second isolation circuit.

[0011] The time service output module comprises a time service output socket arranged on the rear panel, and the time service output socket is connected to the ARM control unit through a first network PHY module.

[0012] The transient time output module comprises a second transient time socket arranged on the rear panel, and the second transient time socket is connected to the ARM control unit through an interface chip.

[0013] The trigger signal output module comprises a third BNC socket arranged on the rear panel, and the third BNC socket is connected to the ARM control unit through a third isolation circuit.

[0014] The BDC code output module comprises a fourth BNC socket arranged on the rear panel, and the fourth BNC socket is connected to the ARM control unit through a fourth isolation circuit.

[0015] The modulation signal output module comprises a fifth BNC socket, a sixth BNC socket and a seventh BNC socket arranged on the rear panel, and the fifth BNC socket, the sixth BNC socket and the seventh BNC socket are connected to the ARM control unit through a distribution drive circuit.

[0016] Further comprising: an indicator light control board arranged inside the front panel, the indicator light control board comprising four indicator lights, which are respectively a locking indicator light for representing that a GPS / Beidou satellite signal has been locked, a time service indicator light for representing that an output network NTP time is normal, a 1pps indicator light for representing that an output 1pps synchronization signal is working normally, and an alarm indicator light for representing that an abnormal working state of the device; the indicator light control board is connected to the ARM control unit through an LEDControl cable.

[0017] Further comprising: a man-machine interaction module; the man-machine interaction module comprises an OLED screen and a key board arranged inside the front panel, the OLED screen is connected to the ARM control unit through a 4-SPI Interface, and the key board is connected to the ARM control unit through a KeyControl interface.

[0018] Further comprising: a high-stability crystal oscillator; an OSC in / out signal of the high-stability crystal oscillator is connected to the ARM control unit.

[0019] Further comprising: a power module; the power module comprises an AC220V socket arranged on the rear panel, and further comprises a switching power supply, a power switch and a secondary power conversion unit connected in sequence; the switching power supply is connected to the AC220V socket; wherein, the power switch is arranged on the front panel.

[0020] The present application provides a multifunctional high-precision synchronous triggering method using the multifunctional high-precision synchronous triggering device as described above, and the method is as follows:

[0021] Step 1: configuration file;

[0022] The configuration file content includes: configuration of the validity of the timing trigger mode and the validity of the external trigger mode;

[0023] Configuration of the validity of the timing trigger mode: trigger time, output signal is rising edge trigger or falling edge trigger, and pulse width;

[0024] Configuration of the validity of the external trigger mode: input signal is rising edge valid or falling edge valid, delay time, output signal is rising edge trigger or falling edge trigger, and output signal pulse width.

[0025] Step 2: parse GPS / Beidou satellite time or DC code input time to get parsed time;

[0026] Step 3: generate 3-way 1PPS, 1-way DC code, and 1-way NTP network time according to the parsed time obtained in step 2;

[0027] Use the parsed time to perform timing trigger or wait for the validity of the external trigger signal;

[0028] Step 4: output trigger signal and trigger time.

[0029] When parsing the GPS / Beidou satellite time or DC code input time,

[0030] When neither the GPS / Beidou satellite time nor the DC code input time is valid, the timing trigger mode, output 1PPS, output DC code, and output NTP network time are all invalid;

[0031] When one of the GPS / Beidou satellite time and the DC code input time is valid, the valid signal is automatically used;

[0032] When both the GPS / Beidou satellite time and the DC code input time are valid, the parsed time of the GPS / Beidou satellite is preferentially used;

[0033] When the GPS / Beidou satellite time or DC code input time is input valid, after the external input signal is disconnected, the internal time of the device is maintained by the high-stability crystal oscillator to continue working, and the output 1PPS, output DC code, and output NTP network time are still valid, and the precision is better than 1ns.

[0034] The external trigger mode includes four input signal and output trigger signal relationships: input signal rising edge valid, output signal rising edge trigger; input signal rising edge valid, output signal falling edge trigger; input signal falling edge valid, output signal rising edge trigger; and input signal falling edge valid, output signal falling edge trigger;

[0035] The rising edge of the input signal is t1, the falling edge of the input signal is t2, the rising edge of the output trigger signal is t3, the falling edge of the output trigger signal is t4, the delay is Δts, and the pulse width is Δtw.

[0036] State 1: The rising edge of the input signal is valid, and the rising edge of the output signal is triggered. The trigger time of the rising edge of the output signal is t3 = t1 + Δts; the falling edge of the output signal is t4 = t1 + Δts + Δtw.

[0037] State 2: The rising edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t1 + Δts; the rising edge trigger time of the output signal is t3 = t1 + Δts - Δtw.

[0038] State 3: The input signal is valid on the falling edge and triggered on the rising edge of the output signal. The trigger time of the rising edge of the output signal is t3 = t2 + Δts; the trigger time of the rising edge of the output signal is t4 = t2 + Δts - Δtw.

[0039] State 4: The falling edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t2 + Δts; the rising edge trigger time of the output signal is t3 = t2 + Δts - Δtw.

[0040] The timing triggering mode includes output signal rising edge triggering and output signal falling edge triggering;

[0041] Let the triggering time be T, and the pulse width be Δtw;

[0042] State 1: The output signal is triggered on the rising edge, and the falling edge trigger time is T+Δtw;

[0043] State 2: The output signal is triggered by the falling edge, and the rising edge is triggered at T-Δtw.

[0044] The technical advantages of this invention are as follows:

[0045] 1) This invention can realize two modes: timed triggering and external triggering. The timed triggering time is generated by real-time parsed GPS / BeiDou time or BDC code time, with high accuracy, reaching the nanosecond level;

[0046] 2) This invention can generate three 1pps signals with a resolution better than nanoseconds for use in synchronization system equipment;

[0047] 3) This invention can simultaneously output NTP network time to provide time synchronization for other devices within the system. Attached Figure Description

[0048] Figure 1 The present invention provides a flowchart of a multifunctional high-precision triggering method.

[0049] Figure 2 This invention provides a diagram illustrating the time relationship between external triggering settings for a multifunctional high-precision triggering device.

[0050] Figure 3 This invention provides a diagram illustrating the time relationship of a multifunctional high-precision triggering device for setting timed triggers.

[0051] Figure 4 The present invention provides a schematic diagram of a multifunctional high-precision triggering device. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0053] Example 1

[0054] This invention proposes a multifunctional, high-precision synchronous triggering device.

[0055] A multifunctional high-precision synchronous triggering device includes an ARM control unit and an input module and an output module respectively connected to the ARM control unit; the input module includes a GPS / BeiDou satellite access module, a DC input module, a configuration signal input module and a trigger signal input module; the output module includes a timing output module, a transient time output module, a trigger signal output module, a BDC code output module and a modulation signal output module.

[0056] The GPS / BeiDou satellite access module includes a first BNC socket on the front panel. One end of the BNC socket is connected to the GPS / BeiDou satellite antenna, and the other end is connected to the ARM control unit through the GPS / BeiDou satellite receiver. The first BNC socket introduces the GPS / BeiDou satellite antenna, which is then demodulated into a 1pps+TOD signal by the GPS / BeiDou satellite receiver and transmitted to the RAM control unit.

[0057] The DC input module includes a DC input socket on the front panel. One end of the DC input socket is connected to the BDC input signal, and the other end is connected to the ARM control unit through the first isolation circuit. An external input BDC code is introduced and then converted into a BDC(1) signal after passing through the first isolation circuit and transmitted to the ARM control unit.

[0058] The configuration signal input module includes a first transient time socket set on the rear panel. One end of the first transient time socket is connected to the configuration signal or trigger time 100Mbps network, and the other end is connected to the ARM control unit through the second network PHY module. The configuration signal or trigger time 100Mbps network NET is converted into MII(2) through the first transient time socket and the network PHY in sequence to communicate with the ARM control unit.

[0059] The trigger signal input module includes a second BNC socket located on the rear panel. One end of the second BNC socket is connected to the trigger signal Trigger_in, and the other end is connected to the ARM control unit through a second isolation circuit. The external trigger signal Trigger_in is transmitted to the ARM control unit after being isolated by the second isolation circuit.

[0060] The timing output module includes a timing output socket on the rear panel, which is connected to the ARM control unit through the first network PHY module. The ARM control unit parses the input GPS / BeiDou satellite time or the input BDC time, modulates it into an MII(1) signal of the NTP protocol, outputs it to the first network PHY module, and converts it into a 100 Mbps network NTP protocol NET(1) signal to the timing output socket.

[0061] The transient time output module includes a second transient time socket disposed on the rear panel, which is connected to the ARM control unit via an interface chip; the trigger time TD / RD signal generated by the ARM control unit is converted into an RS232 signal and output via the interface chip;

[0062] The trigger signal output module includes a third BNC socket located on the rear panel, which is connected to the ARM control unit via a third isolation circuit; the trigger signal Trigger_out generated by the ARM control unit according to the trigger condition is output after being isolated by the third isolation circuit.

[0063] The BDC code output module includes a fourth BNC socket on the rear panel, which is connected to the ARM control unit through a fourth isolation circuit; the BDC code output signal BDC(2) modulated by the ARM control unit is output after being isolated by the fourth isolation circuit;

[0064] The modulation signal output module includes a fifth BNC socket, a sixth BNC socket, and a seventh BNC socket on the rear panel. The fifth BNC socket, the sixth BNC socket, and the seventh BNC socket are all connected to the ARM control unit through a distribution drive circuit. The ARM control unit modulates a 1-channel pps signal, which is then split into three by the distribution drive circuit and the drive capability is increased to generate 1pps(1), 1pps(2), and 1pps(3). 1pps(1) is output through the fourth BNC socket, 1pps(2) is output through the sixth BNC socket, and 1pps(3) is output through the seventh BNC socket.

[0065] It also includes: an indicator light control board located inside the front panel, which contains four indicator lights: a lock indicator light to indicate that the GPS / BeiDou satellite signal is locked, a timing indicator light to indicate that the output network NTP time is normal, a 1pps indicator light to indicate that the output 1pps synchronization signal is working properly, and an alarm indicator light to indicate that the device is in an abnormal working state; the indicator light control board is connected to the ARM control unit via an LEDControl cable.

[0066] It also includes: a human-computer interaction module; the human-computer interaction module includes an OLED screen and a keypad disposed inside the front panel, the OLED screen being connected to the ARM control unit via a 4-SPI Interface; the keypad being connected to the ARM control unit via a KeyControl Interface.

[0067] The OLED screen displays information such as time, satellite lock status, speed, altitude, number of satellites, latitude and longitude, and whether the time source is GPS or BeiDou.

[0068] The keypad has six buttons: "Menu," "OK," "▲," "▶," "▼," and "◀." These buttons allow users to access sub-interfaces for configuring the GPS / BeiDou satellite receiver's operating mode and display mode. The GPS / BeiDou satellite receiver operating mode sub-interface allows users to select either GPS mode, BeiDou mode, or both simultaneously for reception. The display mode sub-interface allows users to choose between always-on mode and sleep mode. In sleep mode, the receiver enters sleep mode after 60 seconds of operation and can be woken up by pressing any button.

[0069] It also includes: a high-stability crystal oscillator; the OSC in / out signal of the high-stability crystal oscillator is connected to the ARM control unit.

[0070] It also includes: a power module; the power module includes an AC220V socket on the rear panel, and a switching power supply, a power switch and a secondary power conversion unit connected in sequence; the switching power supply is connected to the AC220V socket; wherein the power switch is located on the front panel.

[0071] The 220V AC power is converted to 5V by a switching power supply, and then converted to 3.3V, 2.5V, 1.2V and 1.25V by a secondary power conversion unit to supply the various modules and chips on the equipment; the power switch is a round push-button switch to control the on and off of the 5V output of the switching power supply.

[0072] Example 2

[0073] This invention proposes a multifunctional, high-precision synchronous triggering method.

[0074] This invention proposes a multifunctional high-precision synchronous triggering method, using the multifunctional high-precision synchronous triggering device described above, and the method is as follows:

[0075] Step 1: Configuration file;

[0076] The configuration file includes: the validity of the timed trigger mode and the validity of the external trigger mode;

[0077] Timed trigger mode validity configuration: trigger time, whether the output signal is triggered by rising edge or falling edge, and pulse width;

[0078] External trigger mode validity configuration: whether the input signal is valid on the rising edge or the falling edge, the delay time, whether the output signal is triggered on the rising edge or the falling edge, and the output signal pulse width.

[0079] Step 2: Parse the GPS / BeiDou satellite time or DC code input time to obtain the parsed time;

[0080] Step 3: Based on the parsing time obtained in Step 2, generate 3 channels of 1PPS, 1 channel of DC code, and 1 channel of NTP network time;

[0081] Utilize the parsing time to perform timed triggering or wait for an external trigger signal to be valid;

[0082] Step 4: Output the trigger signal and trigger time.

[0083] When parsing GPS / BeiDou satellite time or DC code input time...

[0084] When both GPS / BeiDou satellite time and DC code input time are invalid, the timed trigger mode, output 1PPS, output DC code, and output NTP network time are all invalid.

[0085] If the GPS / BeiDou satellite time and DC code input time are both valid, the valid signal will be used automatically.

[0086] When both GPS / BeiDou satellite time and DC code input time are valid, the GPS / BeiDou satellite resolution time will be used first.

[0087] When the GPS / BeiDou satellite time or DC code input time is valid, if the external input signal is disconnected, the device continues to operate by maintaining the time internally through a high-stability crystal oscillator. The output of 1PPS, output of DC code, and output of NTP network time remain valid, and the accuracy is better than 1ns.

[0088] The external triggering modes include four relationships between input signals and output trigger signals: the input signal is valid on the rising edge and the output signal is triggered on the rising edge; the input signal is valid on the rising edge and the output signal is triggered on the falling edge; the input signal is valid on the falling edge and the output signal is triggered on the rising edge; and the input signal is valid on the falling edge and the output signal is triggered on the falling edge.

[0089] The rising edge of the input signal is t1, the falling edge of the input signal is t2, the rising edge of the output trigger signal is t3, the falling edge of the output trigger signal is t4, the delay is Δts, and the pulse width is Δtw.

[0090] State 1: The rising edge of the input signal is valid, and the rising edge of the output signal is triggered. The trigger time of the rising edge of the output signal is t3 = t1 + Δts; the falling edge of the output signal is t4 = t1 + Δts + Δtw.

[0091] State 2: The rising edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t1 + Δts; the rising edge trigger time of the output signal is t3 = t1 + Δts - Δtw.

[0092] State 3: The input signal is valid on the falling edge and triggered on the rising edge of the output signal. The trigger time of the rising edge of the output signal is t3 = t2 + Δts; the trigger time of the rising edge of the output signal is t4 = t2 + Δts - Δtw.

[0093] State 4: The falling edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t2 + Δts; the rising edge trigger time of the output signal is t3 = t2 + Δts - Δtw.

[0094] The timing triggering mode includes output signal rising edge triggering and output signal falling edge triggering;

[0095] Let the triggering time be T, and the pulse width be Δtw;

[0096] State 1: The output signal is triggered on the rising edge, and the falling edge trigger time is T+Δtw;

[0097] State 2: The output signal is triggered by the falling edge, and the rising edge is triggered at T-Δtw.

[0098] In this invention, both the transient time socket and the timing output socket are RJ45 sockets, and the transient time socket is a DB9 socket.

Claims

1. A multifunctional high-precision synchronous triggering device, characterized in that: It includes an ARM control unit and input modules and output modules respectively connected to the ARM control unit; the input modules include a GPS / BeiDou satellite access module, a DC input module, a configuration signal input module, and a trigger signal input module; the output modules include a timing output module, a transient time output module, a trigger signal output module, a BDC code output module, and a modulation signal output module; Its triggering method is as follows: Step 1: Configuration file; The configuration file includes: the validity of the timed trigger mode and the validity of the external trigger mode; Timed trigger mode validity configuration: trigger time, whether the output signal is triggered by rising edge or falling edge, and pulse width; External trigger mode validity configuration: input signal is rising edge valid or falling edge valid, delay time, output signal is rising edge triggered or falling edge triggered, output signal pulse width; Step 2: Parse the GPS / BeiDou satellite time or DC code input time to obtain the parsed time; Step 3: Based on the parsing time obtained in Step 2, generate 3 channels of 1PPS, 1 channel of DC code, and 1 channel of NTP network time; Utilize the parsing time to perform timed triggering or wait for an external trigger signal to be valid; Step 4: Output the trigger signal and trigger time; The GPS / BeiDou satellite access module includes a first BNC socket on the front panel. One end of the BNC socket is connected to the GPS / BeiDou satellite antenna, and the other end is connected to the ARM control unit through the GPS / BeiDou satellite receiver. The DC input module includes a DC input socket disposed on the front panel. One end of the DC input socket is connected to the BDC input signal, and the other end is connected to the ARM control unit through a first isolation circuit. The configuration signal input module includes a first transient time socket disposed on the rear panel. One end of the first transient time socket is connected to a configuration signal or trigger time 100 Mbps network, and the other end is connected to the ARM control unit through a second network PHY module. The trigger signal input module includes a second BNC socket located on the rear panel. One end of the second BNC socket is connected to the trigger signal Trigger_in, and the other end is connected to the ARM control unit through a second isolation circuit. The timing output module includes a timing output socket mounted on the rear panel, which is connected to the ARM control unit via a first network PHY module. The transient time output module includes a second transient time socket disposed on the rear panel, which is connected to the ARM control unit via an interface chip; The trigger signal output module includes a third BNC socket disposed on the rear panel, and the third BNC socket is connected to the ARM control unit through a third isolation circuit; The BDC code output module includes a fourth BNC socket disposed on the rear panel, and the fourth BNC socket is connected to the ARM control unit through a fourth isolation circuit; The modulation signal output module includes a fifth BNC socket, a sixth BNC socket, and a seventh BNC socket disposed on the rear panel. The fifth BNC socket, the sixth BNC socket, and the seventh BNC socket are all connected to the ARM control unit through a distribution drive circuit.

2. The multifunctional high-precision synchronous triggering device according to claim 1, characterized in that: Also includes: The indicator light control board is located inside the front panel. The indicator light control board contains four indicator lights: a lock indicator light to indicate that the GPS / BeiDou satellite signal is locked, a time synchronization indicator light to indicate that the output network NTP time is normal, a 1pps indicator light to indicate that the output 1pps synchronization signal is working properly, and an alarm indicator light to indicate that the device is in an abnormal working state. The indicator light control board is connected to the ARM control unit via an LEDControl cable.

3. The multifunctional high-precision synchronous triggering device according to claim 2, characterized in that: Also includes: Human-computer interaction module; the human-computer interaction module includes an OLED screen and a button board disposed inside the front panel. The OLED screen is connected to the ARM control unit through a 4-SPI Interface interface; the button board is connected to the ARM control unit through a KeyControl interface.

4. The multifunctional high-precision synchronous triggering device according to claim 3, characterized in that: Also includes: High-stability crystal oscillator; The OSC in / out signal of the high-stability crystal oscillator is connected to the ARM control unit.

5. The multifunctional high-precision synchronous triggering device according to claim 4, characterized in that: Also includes: The power module includes an AC220V socket on the rear panel, and a switching power supply, a power switch, and a secondary power conversion unit connected in sequence. The switching power supply is connected to the AC220V socket. The power switch is located on the front panel.

6. The multifunctional high-precision synchronous triggering device according to claim 5, characterized in that: When parsing GPS / BeiDou satellite time or DC code input time... When both GPS / BeiDou satellite time and DC code input time are invalid, the timed trigger mode, output 1PPS, output DC code, and output NTP network time are all invalid. If the GPS / BeiDou satellite time and DC code input time are both valid, the valid signal will be used automatically. When both GPS / BeiDou satellite time and DC code input time are valid, the GPS / BeiDou satellite resolution time will be used first. When the GPS / BeiDou satellite time or DC code input time is valid, if the external input signal is disconnected, the device continues to operate by maintaining the time internally through a high-stability crystal oscillator. The output of 1PPS, output of DC code, and output of NTP network time remain valid, and the accuracy is better than 1ns.

7. The multifunctional high-precision synchronous triggering device according to claim 6, characterized in that: The external triggering modes include four relationships between input signals and output trigger signals: the input signal is valid on the rising edge and the output signal is triggered on the rising edge; the input signal is valid on the rising edge and the output signal is triggered on the falling edge; the input signal is valid on the falling edge and the output signal is triggered on the rising edge; and the input signal is valid on the falling edge and the output signal is triggered on the falling edge. The rising edge of the input signal is t1, the falling edge of the input signal is t2, the rising edge of the output trigger signal is t3, the falling edge of the output trigger signal is t4, the delay is Δts, and the pulse width is Δtw. State 1: The rising edge of the input signal is valid, and the rising edge of the output signal is triggered. The trigger time of the rising edge of the output signal is t3 = t1 + Δts. The falling edge time of the output signal is t4 = t1 + Δts + Δtw; State 2: The rising edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t1 + Δts; the rising edge trigger time of the output signal is t3 = t1 + Δts - Δtw. State 3: The falling edge of the input signal is valid, and the rising edge of the output signal is triggered. The trigger time of the rising edge of the output signal is t3 = t2 + Δts. The rising edge time of the output signal is t4 = t2 + Δts - Δtw; State 4: The falling edge of the input signal is valid, and the falling edge of the output signal is triggered. The falling edge trigger time of the output signal is t4 = t2 + Δts; the rising edge trigger time of the output signal is t3 = t2 + Δts - Δtw. The timing triggering mode includes output signal rising edge triggering and output signal falling edge triggering; Let the triggering time be T, and the pulse width be Δtw; State 1: The output signal is triggered on the rising edge, and the falling edge trigger time is T+Δtw; State 2: The output signal is triggered by the falling edge, and the rising edge is triggered at T-Δtw.

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