CN103744373A - Synchronous trigger controller - Google Patents

Abstract

A synchronous trigger controller, comprising: a main control unit, a user interface, and a trigger action mechanism; the main control unit is used to receive user instructions, and send control signals to the trigger action mechanism according to user-defined settings; the user interface Used to interact with the user, transmit user-defined setting instructions to the main control unit, and present relevant customized setting information to the user; the triggering mechanism uses a specific signal mechanism to send a signal to the connected controlled machine trigger control signal; the trigger signal modes supported by the synchronous trigger controller include: level/pulse trigger, short-contact trigger, mechanical trigger, and mouse action trigger in the operating system; each channel of the trigger action mechanism can independently adjust the control delay time, so that each controlled machine runs according to a specific response timing.

Description

synchronous trigger controller

technical field

The invention relates to a synchronous trigger controller, which is mainly used in the field of scientific research experiment and high-frequency high-speed test, and makes these devices act synchronously by sending corresponding trigger control signals to controlled machines.

Background technique

In scientific research and testing, multiple instruments and equipment are often used to work together, especially in high-speed signal acquisition, timing synchronization is of great significance to the acquisition and analysis of experimental results. However, the control principles and triggering methods of different types of instruments and equipment are very different, and it is often not easy to achieve reliable, accurate and safe synchronous triggering of various instruments and equipment. For large-scale industrial production, a dedicated control device can be designed to uniformly control all instruments in the system, but its flexibility is poor and it is not universal, so it needs to be developed separately.

In fact, there are mainly four types of triggering and starting methods for common instruments and equipment: 1) level/pulse triggering, that is, the instrument starts triggering after receiving a level or pulse signal within a predetermined range; 2) short-contact triggering, That is, it is triggered and started by turning on and off a certain circuit in the machine; 3) Mechanical triggering, that is, issuing a start command through mechanical operation methods (such as pressing a button, pulling a handle, etc.); 4) Triggering in the operating system, that is, by installing The control software on the computer operating system controls the triggering of the instrument. The synchronous trigger described in the present invention can synchronously control the triggering and starting of multiple downstream instruments and equipment, supports the above four triggering and starting modes, and can independently adjust the trigger delay for each controlled machine.

Contents of the invention

The present invention aims to realize the synchronous control of multiple downstream devices through the unique synchronous trigger controller, which not only realizes scientific synchronous automatic control technically, but also saves human resources and reduces control errors in specific applications .

The synchronous trigger controller of the present invention is realized by the following technical solutions.

The logical structure of the synchronous trigger controller includes: a main control unit, a user interface and a trigger action mechanism. The main control unit is used to send control signals to each action mechanism according to the user's instructions, and feedback the current working status and user settings to the user interface; the user interface is used to interact with the user, accept user instructions and transmit them to the main control program, Present information to the user according to the requirements of the master control program; the trigger mechanism uses a specific signal mechanism to send control signals to the controlled machines connected to it.

The physical structure of the synchronous trigger includes a synchronous trigger host and accessories.

The synchronous flip-flop host includes: a single-chip microcomputer control circuit. Corresponding to the main control unit in the logical structure; an operation panel corresponding to the user interface in the logical structure; a power supply module for supplying power to the system.

The accessories include: several SMA connecting lines, used to connect the short-contact trigger channel, the trigger channel in the operating system and the controlled machine; several BNC connecting lines, used to connect the level/pulse trigger channel and the controlled machine; MCP connecting line Several, used to connect the mechanical output channel and the stepper motor driver; the stepper motor driver, used to drive the stepper motor; the stepper motor, to provide power for the mechanical trigger mechanism connected to the controlled machine; the mechanical trigger mechanism, used To realize the mechanical trigger action.

The trigger modes supported by the trigger mechanism include: level/pulse trigger, short-contact trigger, mechanical trigger, and trigger within the operating system. The level/pulse trigger mode means that the main control unit outputs a step high/low level or level pulse signal to the controlled machine through the level/pulse control channel, so as to realize the triggering of the controlled machine; short-contact trigger The method means that the main control unit realizes the triggering of the controlled machine by controlling the on-off (or grounding) of a certain loop in the controlled machine; the mechanical control mode means that the main control unit outputs A specific control signal drives the stepping motor to run, making the mechanical triggering mechanism on the controlled machine move, and then drives the external mechanical triggering parts (such as sliders and buttons) of the controlled machine to move, thereby realizing the triggering of the controlled machine; The trigger mode in the operating system means that the main control unit sends instructions (mouse clicks, keyboard keys) to the control software installed on the operating system, so as to realize the triggering of the controlled machine through the control software.

Each trigger channel can independently adjust the control delay, so that each controlled machine operates according to a specific response timing. The adjustment of the control delay is carried out offline. The user adjusts the control delay by modifying the software parameters on the PC, and downloads it to the main unit of the synchronous trigger controller.

In order to ensure the accuracy of synchronous control, the synchronous calibration method is used to adjust the control delay of each channel connected to the controlled machine. The idea of synchronous calibration is: through the response of the controlled machine to a group of signals with consistent timing, measure the response time difference of the controlled machine connected to each channel, and then combine the delay adjustment function of the synchronous trigger according to the time difference to realize Precisely synchronized response of each channel.

Description of drawings

Figure 1: Schematic diagram of the synchronous flip-flop system structure.

Figure 2: Schematic diagram of the user panel.

Figure 3: Flowchart of synchronous trigger implementation.

Figure 4: Flow chart of simultaneous calibration implementation.

Detailed ways

A specific implementation scheme of the synchronous trigger controller of the present invention will be described below with reference to the accompanying drawings.

Please refer to Figure 1, which shows the logical structure of the synchronous trigger controller, including: a main control unit, a user interface and a trigger mechanism. The main control unit is used to send control signals to each action mechanism according to the user's instructions, and feedback the current working status and user settings to the user interface; the user interface is used to interact with the user, accept user instructions and transmit them to the main control program, Present information to the user according to the requirements of the master control program; the triggering mechanism uses a specific signal mechanism to send a control signal to the controlled machine connected to it.

In the actual design, the main control unit is realized by the single-chip microcomputer control circuit, the user interface is realized by the operation panel, and the realization method of the trigger action mechanism is determined by its corresponding control method: for the level/pulse trigger channel, it is realized by using the BNC connection line, for The short-contact trigger channel is realized by SMA cable. For the mechanical trigger channel, it is realized by MCP cable, stepper motor driver and stepper motor. For the trigger channel in the operating system, it is realized by SMA cable and pseudo-mouse/keyboard.

Please refer to Figure 2, which shows a schematic diagram of the user panel of the Sync Trigger Controller. The power indicator light 1 is used to indicate the on-off status of the external 220V alternating current, and when the light is on, it indicates the path of the external power supply. The trigger ready indicator light 2 is used to indicate the trigger ready status of the synchronous trigger controller. When the light is on, it means the controller is ready for triggering. The power switch 3 is used to connect or cut off the power supply. The reset button 4 is used to restore the synchronous trigger controller to the initial state. After pressing this button, the trigger ready indicator 2 will light up. Trigger button 5 is used to start the trigger command. After pressing this button, the trigger ready indicator light goes out, and the synchronous trigger controller sends a control signal according to the setting to drive the trigger action mechanism. The trigger command will be sent to the connected controlled machine through each channel. 6, 7, 8, the mouse action trigger signal in the operating system is realized by the external accessories of the 6 signal channels. The program download interface 9 is used to connect the controller host with the PC, and the control program is downloaded from the PC to the controller through this interface.

Please refer to Figure 2 and Figure 3 together. Figure 3 is a flow chart of synchronous trigger implementation, including the following steps:

Step 1. Connect the controlled machine with the synchronous trigger host and necessary accessories. The controlled machine that needs to input the level control signal is connected to the interface 6, and the controlled machine that needs to input the pulse control signal is connected to the interface 8, which needs to be triggered mechanically. , install the mechanical control action mechanism, and connect it with the stepping motor, the stepping motor driver and the interface 7.

Step 2, perform synchronous calibration, see Figure 4 and the following description for the detailed process.

Step 3, after synchronous calibration, the controlled machine coordinates the work under the control of the synchronous trigger.

Please refer to Figure 4, which is a flowchart for the implementation of synchronous calibration, including the following steps:

Step 1. Select an appropriate signal source according to the type of controlled machine, so that all controlled machines can capture a unified target signal. .

Step 2, trigger the signal source to make it send out the target signal, and each controlled machine responds to the target signal respectively.

Step 3, measure the difference between the sending time of the target signal and the corresponding time of the controlled machine, which is the delay of the control channel.

Step 4, according to the control delay measured in step 3, correspondingly adjust the software parameters of the synchronous controller on the PC, and burn them into the host computer of the synchronous controller in an off-line mode.

So far, the implementation of synchronous calibration of the synchronous controller is completed. In actual use, after adjusting the delay parameters, repeat steps 2 and 3 as a check for synchronization calibration.

The above embodiments are only used to illustrate the present invention, and do not have a limiting meaning. For the limited scope of the present invention, please refer to the claims. As long as they are within the spirit of the present invention, appropriate changes and changes made to the above embodiments are within the protection scope of the present invention.

Claims (6)

1. a synchronous trigger controller, is characterized in that being connected with multiple controlled machines simultaneously, by the User Defined of each trigger pip passage, postpones to arrange the corresponding Trig control signal of output, makes all controlled machines synchronously start specific action.

2. synchronous trigger controller according to claim 1, is characterized in that: use unique control core, the trigger pip of each external unit is carried out tuning and controlled time delay.

3. synchronous trigger controller according to claim 1, it is characterized in that: the trigger pip of support has mouse action signal in level/pulse signal, short circuit signal, mechanical action, operating system, be suitable for the startup control of various common instruments, equipment, and guarantee that to greatest extent controlled machine can not be subject to trigger pip impact failure.

4. according to the synchronous trigger controller described in claim 1,3, it is characterized in that: include multiple Trig control signal passages, each passage is exported a kind of Trig control signal.

5. according to the synchronous trigger controller described in claim 1,4, it is characterized in that: can establish and put respectively Time delay each trigger port.

6. according to the synchronous scaling method for synchronous trigger controller described in claim 1,5, it is characterized in that: that by controlled machine, one group of consistent signal of sequential is made is corresponding, record the response time difference of the controlled machine that each passage connects, thereby the time difference, in conjunction with the delay regulatory function of synchronizer trigger, is realized the precise synchronization response of each passage accordingly.

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