WO2024012254A1

WO2024012254A1 - Industrial signal acquisition and triggering system and method

Info

Publication number: WO2024012254A1
Application number: PCT/CN2023/104535
Authority: WO
Inventors: 李云庆; 李鹏宇; 商园春; 雷新宇; 陈颖昌
Original assignee: 上海电子信息职业技术学院
Priority date: 2022-07-13
Filing date: 2023-06-30
Publication date: 2024-01-18
Also published as: CN115373304A

Abstract

An industrial signal acquisition and triggering system, comprising: a single chip microcomputer module (10) of a main control panel, comprising at least a control chip; a data receiving and conversion module (20) connected to the single chip microcomputer module (10) of the main control panel, and used for receiving data, converting an analog signal into a digital signal, and sending the digital signal to the single chip microcomputer module (10) of the main control panel, wherein the data receiving and conversion module (20) comprises at least an analog signal to digital signal conversion chip; a signal acquisition and processing module (30) connected to the data receiving and conversion module (20), and used for acquiring industrial signals sent by various industrial sensors; a trigger module (50) connected to the single chip microcomputer module (10) of the main control panel and the signal acquisition and processing module (30), and used for acquiring and outputting a trigger signal; and a display module (70) connected to the single chip microcomputer module (10) of the main control panel, and used for displaying information and human-computer interaction.

Description

An industrial signal acquisition and triggering system and method

Technical field

The invention relates to the technical fields of industrial automatic control and modern detection, and specifically to an industrial signal acquisition and triggering system and method.

Background technique

With modern industrial production, the requirements for product accuracy are getting higher and higher. In modern industrial production, especially automated production processes, various sensors are used to monitor and control various parameters in the production process, so that the equipment can work in a normal state or The best condition and make the product reach the best quality.

The current industrial signal acquisition system has problems such as fewer acquisition channels, complex parameter modification, poor human-computer interaction, and single acquisition mode. These problems will affect product quality, difficulty in training technical personnel, and system portability.

In response to the above problems, there is an urgent need to innovate industrial signal acquisition methods and triggering systems based on the original industry.

technical problem

The purpose of the present invention is to provide an industrial signal acquisition and triggering system and method to solve the problems of fewer signal acquisition channels, complex parameter modification, poor human-computer interaction, and single acquisition mode in the modern industrial production process proposed in the above background technology. etc. And issues such as product quality that are affected by these situations.

Technical solutions

In order to achieve the above purpose, the present invention provides the following technical solution: an industrial signal acquisition and triggering system and method, including a single-chip computer module of the main control board, at least including a control chip; a data receiving and conversion module, which is connected to the single-chip computer module of the main control board. Connection, used for data reception and conversion of analog signals into digital signals, and sending digital signals to the microcontroller module of the main control board. The data reception and conversion module at least includes an analog signal to digital signal conversion chip; a signal acquisition and processing module, and The data reception and conversion module is connected to collect industrial signals from various industrial sensors; the trigger module is connected to the microcontroller module and the signal acquisition and processing module of the main control board and is used to collect and output trigger signals; and the display module , connected to the microcontroller module of the main control board, used for displaying information and human-computer interaction.

Preferably, the microcontroller module of the main control board also includes a clock circuit, a working status indicator light, a power supply, a download interface, a reset circuit, a memory chip, and a filter circuit, all of which are connected to the control chip. The memory chip is 24C1024, and the control chip is C8051F120. The analog signal to digital signal conversion chip is ADS8365, which is used to improve the acquisition accuracy and communicate directly with the microcontroller. Control chip pin 29, pin 30, pin 31, pin 32, pin 33, pin 34, pin 35, pin 36, pin 39, pin 40, pin 41, pin 42 , pin 43, pin 44, pin 45, and pin 46 respectively correspond to pin 33, pin 34, pin 35, pin 36, pin 37, and pin 38 of the analog signal to digital signal conversion chip. Pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, and pin 48 are connected.

Preferably, the data receiving and conversion module also includes capacitor C37, capacitor C38, capacitor C39, capacitor C40, capacitor C41 and resistor R14. One end of the capacitor C37 is connected to ground, and the other end is connected to the +5V power supply. One end of the capacitor C38 is connected to ground, and the other end is connected to the +5V power supply. Capacitor C39 and capacitor C40 are connected in parallel to capacitor C41, one end is connected to pin 61 and pin 62 of the analog signal to digital signal conversion chip, the other end is connected to one end of resistor R14, and the other end of resistor R14 is connected to ground.

Preferably, the signal acquisition and processing module includes four signal processing sub-modules and signal input terminals of the same design. One of the signal processing sub-modules includes the operational amplifier OPA2227, resistors R15, R16, R17, R18, R19, R20, R21, capacitors C44, C45 and C46. One end of the resistor R17 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 2 of the operational amplifier OPA2227. One end of the resistor R18 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to the IN0 port of the signal input terminal. One end of the resistor R19 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to pins 6 and 7 of the operational amplifier OPA2227. One end of resistor R20 is connected to pin 6 and pin 7 of operational amplifier OPA2227, and the other end is connected to pin 64 of the analog signal to digital signal conversion chip, capacitor C44 and capacitor C46. One end of the resistor R21 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 63 of the analog signal to digital signal conversion chip, capacitor C45 and capacitor C44. One end of resistor R15 is connected to ground, and the other end is connected to resistor R16. One end of resistor R16 is connected to resistor R15, and the other end is connected to pin 2 of operational amplifier OPA2227. One end of the capacitor C44 is connected to ground, and the other end is connected to pin 63 of the analog signal to digital signal conversion chip, the capacitor C45, and the resistor C21. One end of the capacitor C46 is connected to ground, and the other end is connected to pin 64 of the analog signal to digital signal conversion chip, the capacitor C45, and the resistor R20.

Preferably, the trigger module includes a trigger collection sub-module, a trigger-controlled microcontroller sub-module and a trigger-controlled trigger output sub-module. The trigger collection sub-module is connected to the microcontroller module of the main control board, and the trigger output sub-module of trigger control is connected to the trigger control microcontroller sub-module and the trigger collection sub-module.

Preferably, the trigger acquisition sub-module includes 4 trigger acquisition devices of the same design and 4 trigger signal input terminals. The trigger signal input terminal is a 0-5V pulse signal input port. One of the trigger acquisition devices includes the first optocoupler isolator PC817. , capacitor C27, capacitor C28, resistor R6, resistor R7, one end of the capacitor C27 is connected to pin 3 of the first optocoupler isolator PC817 and ground, and the other end is connected to pin 4 of the first optocoupler isolator PC817, resistor R6 and Control chip pin 98, one end of capacitor C28 is connected to pin 2 of the first optocoupler isolator PC817 and pin 1 of the trigger signal input terminal, and the other end is connected to pin 1 of the first optocoupler isolator PC817 and resistor R7 , one end of the resistor R6 is connected to the 3.3V power supply, one end of the resistor R7 is connected to pin 1 of the first optocoupler isolator PC817, and the other end is connected to the 5V power supply. The trigger-controlled microcontroller sub-module includes microcontroller STC12C5A60S2, capacitor C5, resistor R1, capacitor C1, capacitor C2, capacitor C3, capacitor C4, crystal oscillator X1. One end of capacitor C5 is connected to the power supply VCC, and the other end is connected to resistor R1 and the pin of the microcontroller STC12C5A60S2. 9. One end of resistor R1 is connected to capacitor C5 and pin 9 of microcontroller STC12C5A60S2. The other end is connected to ground. Capacitor R1 and capacitor R2 are connected in parallel. One end is connected to power supply VCC and pin 40 of microcontroller STC12C5A60S2. The other end is connected to ground and one end of capacitor C3. Connect capacitor C4 to pin 20 of microcontroller STC12C5A60S2. The other end is connected to crystal oscillator X1 and pin 18 of microcontroller STC12C5A60S2. One end of capacitor C4 is connected to capacitor C3 and pin 20 of microcontroller STC12C5A60S2. The other end is connected to crystal oscillator X1 and pin of microcontroller STC12C5A60S2. 19. One end of crystal oscillator X1 is connected to capacitor C3 and pin 18 of microcontroller STC12C5A60S2, and the other end is connected to capacitor C4 and pin 19 of microcontroller STC12C5A60S2. The trigger output sub-module of trigger control includes four trigger output devices of the same design connected in parallel. The trigger output device includes an optocoupler isolator PC817C, a resistor R3, and a resistor R21. One end of the resistor R3 is connected to the power supply VCC, and the other end is connected to the optocoupler isolator. The No. 1 pin of PC817C and the No. 2 trigger signal input pin of the optocoupler isolator PC817C are connected to the pin 3 of the microcontroller STC12C5A60S2. One end of the resistor R21 is connected to the No. 4 trigger signal output pin of the optocoupler isolator PC817C and the trigger The signal output terminal is connected, the other end is connected to the positive pole of the external signal input terminal, and pin 3 of the optocoupler isolator PC817C is connected to ground.

Preferably, the display module is a touchable DWIN LCD display, and its main control chip is DWIN K600+, which is used for image and data processing. The touchable DWIN LCD display includes a processing chip sub-module. The processing chip sub-module includes capacitor C33, capacitor C34, capacitor C35, capacitor C36, microcontroller MAX3232ECPE, port P5 and port P6. One end of the capacitor C33 is connected to pin 1 of the single-chip computer MAX3232ECPE, and the other end is connected to pin 3 of the single-chip computer MAX3232ECPE. One end of the capacitor C36 is connected to pin 4 of the single-chip computer MAX3232ECPE, and the other end is connected to pin 3 of the single-chip computer MAX3232ECPE. , one end of capacitor C34 is connected to capacitor C35 and ground, the other end is connected to pin 2 of microcontroller MAX3232ECPE, one end of capacitor C35 is connected to capacitor C34 and ground, the other end is connected to pin 6 of microcontroller MAX3232ECPE, the microcontroller MAX3232ECPE Pin No. 7 is connected to pin No. 3 of port P6, and pin No. 8 of the microcontroller MAX3232ECPE is connected to pin No. 3 of port P6.

Preferably, the alarm module is connected to the microcontroller module of the main control board and generates an alarm signal when the measured signal exceeds the set limit; the power module is used to power each module.

Preferably, the alarm module includes the second optocoupler isolator PC817, capacitor C35, capacitor C36, resistor R14, resistor R15, resistor R16, diode 1N4148, two-way relay, NPN transistor 8050, PNP transistor 8550, resistor R17, resistor R18, LED light 6 and passive buzzer, one end of capacitor C35 is connected to pin 1 of the second optocoupler isolator PC817 and the +5V power supply, the other end is connected to pin 2 of the second optocoupler isolator PC817, and one end of capacitor C36 Connect pin 3 of the optocoupler isolator PC817 and ground, the other end is connected to pin 4 of the second optocoupler isolator PC817, one end of the resistor R14 is connected to pin 93 of the control chip, and the other end is connected to the second optocoupler isolator PC817 Pin 2, one end of the resistor R15 is connected to the +5V power supply, the other end is connected to the pin 4 of the second optocoupler isolator PC817, one end of the resistor R16 is connected to the pin 4 of the second optocoupler isolator PC817, and the other end is connected to PNP The base of the transistor 8550, the emitter of the PNP transistor 8550 is connected to the +5V power supply, the base is connected to the resistor R16, the collector is connected to pin 1 of the two relays, one end of the resistor R17 is connected to pin 94 of the control chip, and the other end is connected to NPN The base of the transistor 8050, one end of the resistor R18 is connected to the emitter of the NPN transistor 8050 and pin 1 of the passive buzzer, the other end is connected to the LED lamp 6, one end of the LED lamp 6 is connected to the resistor R18, and the other end is connected to the passive buzzer. buzzer pin 2 and ground. The power module includes a 24V input sub-module, a 12V voltage conversion sub-module, two 5V voltage conversion sub-modules with the same design, and a 24V to ±9V sub-module. The 24V input submodule includes input terminal J1, fuse F1, capacitor C1, and current filter T1. One end of fuse F1 is connected to pin 2 of input terminal J1, and the other end is connected to pin 1 of current filter T1. , the No. 1 pin of the input terminal J1 is connected to the No. 4 pin of the current filter T1, one end of the capacitor C1 is connected to the No. 2 pin of the current filter T1 and the 24V power supply, and the other end is connected to the No. 3 pin of the current filter T1. pin and ground. The 12V voltage conversion sub-module includes electrolytic capacitor C28, capacitor C3, voltage conversion module U1, electrolytic capacitor C4, capacitor C5, light-emitting diode VD1, resistor R1. The positive electrode of electrolytic capacitor C2 is connected to capacitor C3, +24V power supply and voltage conversion module U1. Pin No. 2, the negative electrode is connected to capacitor C3, ground and pin No. 1 of voltage conversion module U1. The positive electrode of electrolytic capacitor C4 is connected to capacitor C5, +12V power supply, pin No. 3 of voltage conversion module U1 and the positive electrode of light-emitting diode VD1. , the negative electrode is connected to the capacitor C5, ground, pin 4 of the voltage conversion module U1 and the resistor R1. The other end of the resistor R1 is connected to the negative electrode of the light-emitting diode VD1. The 5V voltage conversion sub-module includes electrolytic capacitor C6, capacitor C7, voltage conversion module U2, electrolytic capacitor C8, capacitor C9, light-emitting diode VD2 and resistor R2. The positive electrode of electrolytic capacitor C6 is connected to capacitor C7, +24V power supply and voltage conversion module U2. Pin No. 2, the negative electrode is connected to capacitor C7, ground, and pin No. 1 of voltage conversion module U2. The positive electrode of electrolytic capacitor C8 is connected to capacitor C9, +12V power supply, pin No. 3 of voltage conversion module U2, and light-emitting diode VD2. The positive and negative electrodes are connected to capacitor C8, ground, pin 4 of voltage conversion module U2 and resistor R2. The other end of resistor R2 is connected to the negative electrode of light-emitting diode VD2. The 24V to ±9V sub-module includes electrolytic capacitor C14, capacitor C11, voltage conversion module U4, electrolytic capacitor C16, capacitor C17, electrolytic capacitor C20, capacitor C21, light-emitting diode VD4, resistor R4, light-emitting diode VD5 and resistor R5, electrolytic capacitor C14 The positive electrode is connected to capacitor C11, +24V power supply and pin 1 of voltage conversion module U4, the negative electrode is connected to capacitor C11, ground and pin 2 of voltage conversion module U4, the positive electrode of capacitor C16 is connected to capacitor C17, +9V power supply, and light The anode of diode VD4 is connected to pin 6 of voltage conversion module U4, and the cathode is connected to the anode of electrolytic capacitor C20, capacitor C17, resistor R4, capacitor C21, ground, resistor R5, and pin 5 of power conversion module U4. Electrolytic resistor C20 It is connected to resistor R21, -9V power supply and the cathode of light-emitting diode VD5. Resistor R5 is connected to the anode of light-emitting diode VD5. Resistor R4 is connected to the anode of light-emitting diode VD4.

It also includes an industrial signal acquisition and triggering method, which includes the following steps: Step 1, set parameters through the display module; Step 2, the trigger module sends a trigger signal; Step 3, the signal acquisition and processing module performs processing on the acquisition channel after receiving the trigger signal. Data acquisition; Step 4, the signal acquisition and processing module sends the processing results to the data receiving and conversion module and converts them into digital signals, and the digital signals are sent to the microcontroller module of the main control board; Step 5, the processed data is displayed on the display module .

beneficial effects

Compared with the prior art, the beneficial effects of the present invention are:

(1) The industrial signal acquisition and triggering system of the present invention involves industrial signal detection, acquisition, processing and can generate specific trigger signals according to acquisition requirements. It can collect four different types of industrial standard output (voltage, current) transmitters , processing and display, using a touchable industrial-grade display to achieve good human-computer interaction and reduce the difficulty of parameter modification, and improve the portability of the system; it can simulate various industrial control trigger signals, and 16 trigger modes can be selected , the trigger speed is adjustable, and the trigger frequency, trigger time, trigger interval time parameters can also be adjusted, the upper limit of the collected signal can be set, and when the measured signal exceeds the set limit, an alarm signal is generated and recorded;

(2) The industrial signal acquisition and triggering system of the present invention sets password protection to prevent specific parameters from being maliciously tampered with. Only if the password is correct can the specific parameters be modified to ensure the security of key parameters. Specific parameters include sensor specifications, reference parameters, overload values, and calibration coefficients. When using this system, when you need to collect different types of industrial signals, you need to adjust the sensor specifications and reference parameters through the control terminal, and adjust the calibration coefficient to improve the collection accuracy by comparing it with the standard signal. If the signal strength requires an alert, adjust its overload value to cope with different alarm requirements. The control terminal can display the real-time signal collection size in real time. Multi-channel acquisition is set up, and the parameters of each channel can be set independently. Each channel is independent and the channels will not affect each other.

Description of drawings

Figure 1 is a schematic diagram of an industrial signal acquisition and triggering system in an embodiment of the present invention;

Figure 2 is a circuit diagram of the microcontroller module of the main control board in the embodiment of the present invention;

Figure 3 is a circuit diagram of the data receiving and conversion module in the embodiment of the present invention;

Figure 4 is a circuit diagram of a signal acquisition and processing module in an embodiment of the present invention;

Figure 5 is a logical flow chart of data collection and processing in the embodiment of the present invention.

Figure 6 is a circuit diagram of the alarm module in the embodiment of the present invention;

Figure 7 is a circuit diagram of the trigger collection sub-module in the embodiment of the present invention;

Figure 8 is a circuit diagram of a trigger controlled microcontroller sub-module in an embodiment of the present invention;

Figure 9 is a circuit diagram of a trigger output sub-module of trigger control in an embodiment of the present invention;

Figure 10 is a logic flow diagram of the trigger module in the embodiment of the present invention;

Figure 11 is a circuit diagram of a power module in an embodiment of the present invention;

Figure 12 is a circuit diagram of a touchable DWIN LCD display in an embodiment of the present invention;

Figure 13 is a flow chart of the control terminal display module in the embodiment of the present invention;

Figure 14 is a main processor circuit board module diagram in an embodiment of the present invention;

Figure 15 is a logic flow chart of the operation of the industrial signal acquisition and triggering method in the embodiment of the present invention.

Best Mode of Carrying Out the Invention

Please refer to Figures 1-15. The present invention provides a technical solution: an industrial signal collection and triggering system. Figure 1 is a schematic diagram of the industrial signal collection and triggering system in an embodiment of the present invention.

As shown in Figure 1, the industrial signal acquisition and triggering system of this embodiment includes a single-chip microcomputer module 10 of the main control board, a data receiving and conversion module 20, a signal acquisition and processing module 30, an alarm system module 40, and a triggering module. 50. Power module 60 and display module 70.

The microcontroller module 10 of the main control board includes a control chip, a clock circuit, a working status indicator light, a power supply, a download line interface, a reset circuit, a memory chip, a filter circuit, and a main clock circuit, all of which are connected to the control chip. The memory chip is 24C1024. The control chip is C8051F120.

The data receiving and converting module 20 is connected to the single chip microcomputer module 10 of the main control board, and is used for data reception and converting analog signals into digital signals, and sending the digital signals to the single chip microcomputer module 10 of the main control board. The data receiving and converting module 20 It includes an analog signal to digital signal conversion chip 21, capacitor C37, capacitor C38, capacitor C39, capacitor C40, capacitor C41 and resistor R14.

Figure 2 is a circuit diagram of the microcontroller module of the main control board in the embodiment of the present invention.

Figure 3 is a circuit diagram of a data receiving and converting module in an embodiment of the present invention.

As shown in Figures 2 and 3, the control chip has pins 29, 30, 31, 32, 33, 34, 35, 36, 39, and 40. Pins 41, 42, 43, 44, 45, and 46 are respectively connected with pins 33, 34, 35, and 36 of the analog signal to digital signal conversion chip. , pin 37, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, pin 48 connections.

As shown in Figure 3, one end of the capacitor C37 is connected to ground, and the other end is connected to the +5V power supply. One end of the capacitor C38 is connected to ground, and the other end is connected to the +5V power supply. Capacitor C39 and capacitor C40 are connected in parallel to capacitor C41, one end is connected to pin 61 and pin 62 of the analog signal to digital signal conversion chip, the other end is connected to one end of resistor R14, and the other end of resistor R14 is connected to ground.

Figure 4 is a circuit diagram of the signal acquisition and processing module in the embodiment of the present invention.

As shown in FIG. 4 , the signal acquisition and processing module 30 includes four signal processing sub-modules and signal input terminals of the same design. One of the signal processing sub-modules includes the operational amplifier OPA2227, resistors R15, R16, R17, R18, R19, R20, R21, capacitors C44, C45 and C46.

One end of the resistor R17 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 2 of the operational amplifier OPA2227. One end of the resistor R18 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to the IN0 port of the signal input terminal. One end of the resistor R19 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to pins 6 and 7 of the operational amplifier OPA2227. One end of resistor R20 is connected to pin 6 and pin 7 of operational amplifier OPA2227, and the other end is connected to pin 64 of the analog signal to digital signal conversion chip, capacitor C44 and capacitor C46. One end of the resistor R21 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 63 of the analog signal to digital signal conversion chip, capacitor C45 and capacitor C44. One end of resistor R15 is connected to ground, and the other end is connected to resistor R16. One end of resistor R16 is connected to resistor R15, and the other end is connected to pin 2 of operational amplifier OPA2227. One end of the capacitor C44 is connected to ground, and the other end is connected to pin 63 of the analog signal to digital signal conversion chip, the capacitor C45, and the resistor C21. One end of the capacitor C46 is connected to ground, and the other end is connected to pin 64 of the analog signal to digital signal conversion chip, the capacitor C45, and the resistor R20.

Embodiments of the invention

As shown in Figure 5, the operating logic flow of the data receiving and converting module 20 and the signal acquisition and processing module 30 is:

Step S1, determine whether there is a trigger pulse.

Step S2: Collect data after 450 analog-to-digital conversions, and send the largest data to the formula function.

Step S3: After formula operation, the final processed data result is sent to the display module for display.

The alarm module 40 is connected to the microcontroller module 10 of the main control board, and generates an alarm signal when the measured signal exceeds the set limit.

Figure 6 is a circuit diagram of the alarm module in the embodiment of the present invention.

As shown in Figure 6, the alarm module 40 includes a second optocoupler isolator PC817, a capacitor C35, a capacitor C36, a resistor R14, a resistor R15, a resistor R16, a diode 1N4148, two relays, an NPN transistor 8050, a PNP transistor 8550, and a resistor R17. , resistor R18, LED light 6 and passive buzzer.

One end of the capacitor C35 is connected to pin 1 of the second optocoupler isolator PC817 and the +5V power supply, the other end is connected to pin 2 of the second optocoupler isolator PC817, and one end of the capacitor C36 is connected to pin 3 of the optocoupler isolator PC817. and ground, and the other end is connected to pin 4 of the second optocoupler isolator PC817. One end of the resistor R14 is connected to pin 93 of the control chip, and the other end is connected to pin 2 of the second optocoupler isolator PC817. One end of resistor R15 is connected to the +5V power supply, and the other end is connected to pin 4 of the second optocoupler isolator PC817. One end of the resistor R16 is connected to pin 4 of the second optocoupler isolator PC817, and the other end is connected to the base of the PNP transistor 8550. The emitter of the PNP transistor 8550 is connected to the +5V power supply, the base is connected to the resistor R16, and the collector is connected to pin 1 of the two relays. One end of resistor R17 is connected to pin 94 of the control chip, and the other end is connected to the base of NPN transistor 8050. One end of resistor R18 is connected to the emitter of NPN transistor 8050 and pin 1 of the passive buzzer, and the other end is connected to LED light 6. One end of LED lamp 6 is connected to resistor R18, and the other end is connected to pin 2 of the passive buzzer and ground.

The trigger module 50 includes a trigger acquisition sub-module 51, a trigger-controlled microcontroller sub-module 52, and a trigger-controlled trigger output sub-module 53. The trigger collection sub-module 51 is connected to the microcontroller module 10 of the main control board, and the trigger output sub-module 53 of trigger control is connected to the trigger control microcontroller sub-module 10 and the trigger collection sub-module 51 .

Figure 7 is a circuit diagram of the trigger collection sub-module in the embodiment of the present invention.

As shown in Figure 7, the trigger collection sub-module 51 includes 4 trigger collection devices of the same design and 4 trigger signal input terminals. The trigger signal input terminal is a 5-0V pulse signal input port.

One of the trigger acquisition devices includes a first optocoupler isolator PC817, capacitor C27, capacitor C28, resistor R6, and resistor R7.

One end of the capacitor C27 is connected to pin 3 of the first optocoupler isolator PC817 and ground, and the other end is connected to pin 4 of the first optocoupler isolator PC817, resistor R6 and pin 98 of the control chip. One end of the capacitor C28 is connected to pin 2 of the first optocoupler isolator PC817 and pin 1 of the trigger signal input terminal, and the other end is connected to pin 1 of the first optocoupler isolator PC817 and the resistor R7. One end of the resistor R6 is connected to the 3.3V power supply, one end of the resistor R7 is connected to pin 1 of the first optocoupler isolator PC817, and the other end is connected to the 5V power supply.

FIG. 8 is a circuit diagram of a trigger-controlled microcontroller submodule in an embodiment of the present invention.

As shown in Figure 8, the trigger-controlled microcontroller sub-module 52 includes a microcontroller STC12C5A60S2, capacitor C5, resistor R1, capacitor C1, capacitor C2, capacitor C3, capacitor C4, and crystal oscillator X1.

One end of the capacitor C5 is connected to the power supply VCC, and the other end is connected to the resistor R1 and pin 9 of the microcontroller STC12C5A60S2. One end of resistor R1 is connected to capacitor C5 and pin 9 of microcontroller STC12C5A60S2, and the other end is connected to ground. Capacitor R1 and capacitor R2 are connected in parallel, one end is connected to the power supply VCC and pin 40 of the microcontroller STC12C5A60S2, and the other end is connected to ground. One end of capacitor C3 is connected to capacitor C4 and pin 20 of microcontroller STC12C5A60S2, and the other end is connected to crystal oscillator X1 and pin 18 of microcontroller STC12C5A60S2. One end of capacitor C4 is connected to capacitor C3 and pin 20 of microcontroller STC12C5A60S2, and the other end is connected to crystal oscillator X1 and pin 19 of microcontroller STC12C5A60S2. One end of the crystal oscillator X1 is connected to the capacitor C3 and pin 18 of the microcontroller STC12C5A60S2, and the other end is connected to the capacitor C4 and pin 19 of the microcontroller STC12C5A60S2.

Figure 9 is a circuit diagram of a trigger output sub-module of trigger control in an embodiment of the present invention.

As shown in FIG. 9 , the trigger output sub-module 53 of trigger control includes four parallel-connected trigger output devices of the same design. The trigger output device includes optocoupler isolator PC817C, resistor R3, and resistor R21.

One end of the resistor R3 is connected to the power supply VCC, and the other end is connected to pin 1 of the optocoupler isolator PC817C. The No. 2 trigger signal input pin of the optocoupler isolator PC817C is connected to the pin 3 of the microcontroller STC12C5A60S2. One end of resistor R21 is connected to the No. 4 trigger signal output pin and trigger signal output terminal of the optocoupler isolator PC817C, and the other end is connected to the positive pole of the external signal input terminal. Pin 3 of the optocoupler isolator PC817C is connected to ground.

Figure 10 is a logic flow chart of the trigger module in the embodiment of the present invention.

As shown in Figure 10, the operation logic flow of the trigger module is:

Step S1, before triggering, a self-check will be performed to ensure that the four channels can be triggered. By default, four channels will be triggered simultaneously. If you need to modify it, you can manually press the plus or minus key to adjust the number of channels that need to be triggered.

Step S2, after pressing the SET key for the first time, the digital tube will display the current trigger speed level. If you need to modify it, you can manually press the plus or minus key to adjust the speed that needs to be triggered.

Step S3, after pressing the SET key again, the digital tube will display the current level of the trigger holding time. If you need to modify it, you can manually press the plus or minus key to adjust the maintenance time that needs to be triggered.

Step S4, finally press the SET setting key again to exit the setting mode and send the trigger signal.

The power module 60 is used to provide power to each module.

Figure 11 is a circuit diagram of a power module in an embodiment of the present invention.

As shown in Figure 11, the power module 60 includes a 24V input sub-module 61, a 12V voltage conversion sub-module 62, two 5V voltage conversion sub-modules 63 with the same design, and a 24V to ±9V sub-module 64.

The 24V input sub-module 61 includes an input terminal J1, a fuse F1, a capacitor C1, and a current filter T1.

One end of the fuse F1 is connected to pin 2 of the input terminal J1, the other end is connected to pin 1 of the current filter T1, and pin 1 of the input terminal J1 is connected to pin 4 of the current filter T1. , one end of capacitor C1 is connected to pin 2 of current filter T1 and the 24V power supply, and the other end is connected to pin 3 of current filter T1 and ground.

The 12V voltage conversion sub-module 62 includes electrolytic capacitor C28, capacitor C3, voltage conversion module U1, electrolytic capacitor C4, capacitor C5, light-emitting diode VD1, and resistor R1.

The positive electrode of electrolytic capacitor C2 is connected to capacitor C3, +24V power supply and pin 2 of voltage conversion module U1, the negative electrode is connected to capacitor C3, ground and pin 1 of voltage conversion module U1, and the positive electrode of electrolytic capacitor C4 is connected to capacitor C5, + The 12V power supply, pin 3 of the voltage conversion module U1 and the anode of the light-emitting diode VD1, the cathode is connected to the capacitor C5, ground, pin 4 of the voltage conversion module U1 and resistor R1, the other end of the resistor R1 is connected to the cathode of the light-emitting diode VD1 connect.

The 5V voltage conversion sub-module 63 includes electrolytic capacitor C6, capacitor C7, voltage conversion module U2, electrolytic capacitor C8, capacitor C9, light-emitting diode VD2 and resistor R2.

The positive electrode of electrolytic capacitor C6 is connected to capacitor C7, +24V power supply, and pin 2 of voltage conversion module U2. The negative electrode is connected to capacitor C7, ground, and pin 1 of voltage conversion module U2. The positive electrode of electrolytic capacitor C8 is connected to capacitor C9, +12V power supply, pin 3 of the voltage conversion module U2 and the anode of the light-emitting diode VD2. The cathode is connected to the capacitor C8, ground, pin 4 of the voltage conversion module U2 and resistor R2. The other end of the resistor R2 is connected to the anode of the light-emitting diode VD2. Negative connection.

The 24V to ±9V sub-module 64 includes electrolytic capacitor C14, capacitor C11, voltage conversion module U4, electrolytic capacitor C16, capacitor C17, electrolytic capacitor C20, capacitor C21, light-emitting diode VD4, resistor R4, light-emitting diode VD5 and resistor R5.

The positive electrode of electrolytic capacitor C14 is connected to capacitor C11, +24V power supply and pin 1 of voltage conversion module U4, the negative electrode is connected to capacitor C11, ground and pin 2 of voltage conversion module U4, and the positive electrode of capacitor C16 is connected to capacitor C17, +9V The positive electrode of the power supply, the light-emitting diode VD4 and the No. 6 pin of the voltage conversion module U4, and the negative electrode are connected to the positive electrode of the electrolytic capacitor C20, capacitor C17, resistor R4, capacitor C21, ground, resistor R5 and the No. 5 pin of the power conversion module U4. The electrolytic resistor C20 is connected to the resistor R21, the -9V power supply and the cathode of the light-emitting diode VD5, the resistor R5 is connected to the anode of the light-emitting diode VD5, and the resistor R4 is connected to the anode of the light-emitting diode VD4.

The display module 70 is a touchable DWIN LCD display, and its main control chip is DWIN K600+, which is used for image and data processing. The touchable DWIN LCD display includes a processing chip sub-module 71 .

Figure 12 is a circuit diagram of a touchable DWIN LCD display in an embodiment of the present invention.

As shown in Figure 12, the processing chip sub-module includes capacitor C33, capacitor C34, capacitor C35, capacitor C36, microcontroller MAX3232ECPE, port P5 and port P6.

One end of the capacitor C33 is connected to pin 1 of the single-chip computer MAX3232ECPE, and the other end is connected to pin 3 of the single-chip computer MAX3232ECPE. One end of the capacitor C36 is connected to pin 4 of the single-chip computer MAX3232ECPE, and the other end is connected to pin 3 of the single-chip computer MAX3232ECPE. , one end of capacitor C34 is connected to capacitor C35 and ground, the other end is connected to pin 2 of microcontroller MAX3232ECPE, one end of capacitor C35 is connected to capacitor C34 and ground, the other end is connected to pin 6 of microcontroller MAX3232ECPE, the microcontroller MAX3232ECPE Pin No. 7 is connected to pin No. 3 of port P6, and pin No. 8 of the microcontroller MAX3232ECPE is connected to pin No. 3 of port P6.

Figure 13 is a flow chart of the control terminal display module in the embodiment of the present invention.

As shown in Figure 13, the operation logic flow of the display module is:

Step S1, after the system initialization is completed, it automatically switches to the homepage (single-channel data display page. If the system is collecting data, the data will be displayed directly.);

Step S2, select the page to jump to and click the button. The pages that can be selected include channel selection, parameter settings, and history records.

Step S3, check historical records or other channel values and enter the password to modify parameter values;

Step S4, return to the home page.

In this embodiment, the channel selection can select the acquisition channel that needs to be displayed. You can choose single channel, dual channel, or four channel. Single channel only displays the data collected by channel one. The dual-channel display can simultaneously display the data collected by channel one and channel two and the sum of the data collected by the two channels. The four channels can simultaneously display the data collected by channel one, channel two, channel three, channel four and the sum of the data collected by the four channels.

Parameter setting can set the parameters of this system. After entering, you need to enter a password. Only when the password is correct can you change the parameters. The parameter setting home page can display the current values of the parameters of each channel. Parameters that can be changed include sensor specifications, reference parameters, overload values, and calibration coefficients.

The history record can display the alarm time of each channel and the data collection results at the time of alarm.

In this embodiment, the microcontroller module 10 of the main control board also includes an input and output module 11 .

Figure 14 is a main processor circuit board module diagram in an embodiment of the present invention.

As shown in Figure 14, the signal isolation input module 30 is the signal acquisition and processing module 30, the signal conversion and processing module 20 is the data reception and conversion module 20, and the main processor module 11 is the microcontroller module 10 of the main control board. The power module 60 supplies power to the signal conversion module 20, the main processor module 10, and the signal isolation input module 30 through the input and output module 12. The signal isolation input module 30 obtains the signal from the input and output module 12 and transmits it to the signal conversion module 20. The signal conversion module 20 performs analog-to-digital conversion on the signal and transmits it to the main processor module 10 for processing, and then transmits it to the display through the input and output module 11. Module 70.

This embodiment also provides an industrial signal collection and triggering method.

As shown in Figure 15, the industrial signal acquisition and triggering method in this embodiment includes the following steps:

Step S1: Set parameters through the display module.

Step S2: The trigger module sends a trigger signal.

Step S3: After receiving the trigger signal, the signal acquisition and processing module collects data from the acquisition channel.

In step S4, the signal acquisition and processing module sends the processing results to the data receiving and conversion module and converts them into digital signals. The digital signals are sent to the microcontroller module of the main control board.

Step S5: The processed data is displayed on the display module.

Industrial applicability

The industrial signal acquisition and triggering system of the present invention involves industrial signal detection, acquisition, processing and can generate specific trigger signals according to acquisition requirements. It can collect, process and generate four different types of industrial standard output (voltage, current) transmitters. Display adopts touch-control industrial-grade display to achieve good human-computer interaction and reduce the difficulty of parameter modification, and improves the portability of the system; it can simulate various industrial control trigger signals, 16 trigger modes can be selected, trigger speed It is adjustable and can also adjust the trigger frequency, trigger time, trigger interval time parameters, set the upper limit of the collected signal, and generate and record an alarm signal when the measured signal exceeds the set limit.

In addition, the industrial signal acquisition and triggering system of the present invention sets password protection to prevent specific parameters from being maliciously tampered with. Only if the password is correct can the specific parameters be modified to ensure the security of key parameters. Specific parameters include sensor specifications, reference parameters, overload values, and calibration coefficients. When using this system, when you need to collect different types of industrial signals, you need to adjust the sensor specifications and reference parameters through the control terminal, and adjust the calibration coefficient to improve the collection accuracy by comparing it with the standard signal. If the signal strength requires an alert, adjust its overload value to cope with different alarm requirements. The control terminal can display the real-time signal collection size in real time. Multi-channel acquisition is set up, and the parameters of each channel can be set independently. Each channel is independent and the channels will not affect each other.

Claims

An industrial signal acquisition and triggering system, which is characterized by including:

The microcontroller module of the main control board, at least including the control chip;

A data receiving and conversion module is connected to the single-chip computer module of the main control board, used for data reception and converting analog signals into digital signals, and sending the digital signals to the single-chip computer module of the main control board. The data receiving and conversion module at least includes a conversion chip for converting analog signals into digital signals;

A signal acquisition and processing module, connected to the data receiving and conversion module, is used to collect industrial signals emitted by various industrial sensors;

a trigger module, connected to the microcontroller module of the main control board and the signal acquisition and processing module, for collecting and outputting trigger signals; and a display module, connected to the microcontroller module of the main control board, for display Information and human-computer interaction.

2. The industrial signal acquisition and triggering system according to claim 1, characterized in that:

Among them, the microcontroller module of the main control board also includes a clock circuit, a working status indicator light, a power supply, a download interface, a reset circuit, a memory chip, and a filter circuit, all of which are connected to the control chip. The memory chip is 24C1024.

The control chip is C8051F120,

The analog signal to digital signal conversion chip is ADS8365, which is used to improve the collection accuracy and communicate directly with the microcontroller.

Pin 29, pin 30, pin 31, pin 32, pin 33, pin 34, pin 35, pin 36, pin 39, pin 40, pin 41, and pin of the control chip Pin 42, pin 43, pin 44, pin 45, and pin 46 are respectively connected with pins 33, pin 34, pin 35, pin 36, and pin 37 of the analog signal to digital signal conversion chip. Pin 38, Pin 39, Pin 40, Pin 41, Pin 42, Pin 43, Pin 44, Pin 45, Pin 46, Pin 47, Pin 48 are connected.

3. The industrial signal acquisition and triggering system according to claim 1, characterized in that:

Among them, the data receiving and conversion module also includes capacitor C37, capacitor C38, capacitor C39, capacitor C40, capacitor C41 and resistor R14,

One end of the capacitor C37 is connected to ground, and the other end is connected to the +5V power supply.

One end of the capacitor C38 is connected to ground, and the other end is connected to the +5V power supply.

The capacitor C39 and the capacitor C40 are connected in parallel to the capacitor C41, one end is connected to the pin 61 and the pin 62 of the analog signal to digital signal conversion chip, the other end is connected to one end of the resistor R14, and the other end of the resistor R14 Connect to ground.

4. The industrial signal acquisition and triggering system according to claim 1, characterized in that:

Among them, the signal acquisition and processing module includes 4 signal processing sub-modules and signal input terminals of the same design,

One of the signal processing sub-modules includes an operational amplifier OPA2227, resistors R15, R16, R17, R18, R19, R20, R21, capacitors C44, C45 and C46,

One end of the resistor R17 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 2 of the operational amplifier OPA2227.

One end of the resistor R18 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to the IN0 port of the signal input terminal.

One end of the resistor R19 is connected to pin 3 of the operational amplifier OPA2227, and the other end is connected to pins 6 and 7 of the operational amplifier OPA2227,

One end of the resistor R20 is connected to pin 6 and pin 7 of the operational amplifier OPA2227, and the other end is connected to pin 64 of the analog signal to digital signal conversion chip, the capacitor C44 and the capacitor C46,

One end of the resistor R21 is connected to pin 1 of the operational amplifier OPA2227, and the other end is connected to pin 63 of the analog signal to digital signal conversion chip, capacitor C45 and capacitor C44,

One end of the resistor R15 is connected to ground, and the other end is connected to the resistor R16.

One end of the resistor R16 is connected to the resistor R15, and the other end is connected to pin 2 of the operational amplifier OPA2227.

One end of the capacitor C44 is connected to ground, and the other end is connected to the pin 63 of the analog signal to digital signal conversion chip, the capacitor C45 and the resistor C21.

One end of the capacitor C46 is connected to ground, and the other end is connected to the pin 64 of the analog signal to digital signal conversion chip, the capacitor C45 and the resistor R20.

5. The industrial signal acquisition and triggering system according to claim 1, characterized in that:

Wherein, the trigger module includes a trigger collection sub-module, a trigger-controlled microcontroller sub-module and a trigger-controlled trigger output sub-module.

The trigger collection sub-module is connected to the microcontroller module of the main control board, and the trigger output sub-module of trigger control is connected to the trigger control microcontroller sub-module and the trigger collection sub-module.

6. The industrial signal acquisition and triggering system according to claim 5, characterized in that:

Among them, the trigger acquisition sub-module includes 4 trigger acquisition devices of the same design and 4 trigger signal input terminals. The trigger signal input terminal is a 0-5V pulse signal input port, and one of the trigger acquisition devices includes a first Optocoupler isolator PC817, capacitor C27, capacitor C28, resistor R6, resistor R7. One end of the capacitor C27 is connected to pin 3 of the first optocoupler isolator PC817 and ground, and the other end is connected to the first optocoupler isolator. Pin 4 of PC817, resistor R6 and pin 98 of the control chip, one end of the capacitor C28 is connected to pin 2 of the first optocoupler isolator PC817 and pin 1 of the trigger signal input terminal, The other end is connected to pin 1 of the first optocoupler isolator PC817 and the resistor R7, one end of the resistor R6 is connected to the 3.3V power supply, and one end of the resistor R7 is connected to pin 1 of the first optocoupler isolator PC817. Connect the other end to the 5V power supply,

The trigger-controlled microcontroller sub-module includes microcontroller STC12C5A60S2, capacitor C5, resistor R1, capacitor C1, capacitor C2, capacitor C3, capacitor C4, and crystal oscillator X1. One end of the capacitor C5 is connected to the power supply VCC, and the other end is connected to the resistor R1. and pin 9 of the single-chip computer STC12C5A60S2. One end of the resistor R1 is connected to the capacitor C5 and pin 9 of the single-chip computer STC12C5A60S2. The other end is connected to ground. The capacitor R1 and capacitor R2 are connected in parallel. One end is connected to the power supply VCC and The other end of the pin 40 of the single-chip computer STC12C5A60S2 is connected to ground. One end of the capacitor C3 is connected to the capacitor C4 and the pin 20 of the single-chip computer STC12C5A60S2. The other end is connected to the crystal oscillator X1 and the pin of the single-chip computer STC12C5A60S2. 18. One end of the capacitor C4 is connected to the capacitor C3 and the pin 20 of the single-chip computer STC12C5A60S2, the other end is connected to the crystal oscillator X1 and the pin 19 of the single-chip computer STC12C5A60S2, and one end of the crystal oscillator X1 is connected to the capacitor. C3 and pin 18 of the single-chip computer STC12C5A60S2, and the other end is connected to the capacitor C4 and pin 19 of the single-chip computer STC12C5A60S2.

The trigger output sub-module of the trigger control includes four trigger output devices of the same design connected in parallel. The trigger output device includes an optocoupler isolator PC817C, a resistor R3, and a resistor R21. One end of the resistor R3 is connected to the power supply VCC, and the other is connected to the power supply VCC. One end is connected to pin No. 1 of the optocoupler isolator PC817C, trigger signal input pin No. 2 of the optocoupler isolator PC817C is connected to pin 3 of the microcontroller STC12C5A60S2, and one end of the resistor R21 is connected to the The No. 4 trigger signal output pin of the optocoupler isolator PC817C is connected to the trigger signal output terminal, the other end is connected to the positive pole of the external signal input terminal, and the No. 3 pin of the optocoupler isolator PC817C is connected to the ground.

7. The industrial signal acquisition and triggering system according to claim 1, characterized in that:

Among them, the display module is a touchable DWIN LCD display, and its main control chip is DWIN K600+, which is used for image and data processing.

The touchable DWIN LCD screen includes a processing chip sub-module,

The processing chip sub-module includes capacitor C33, capacitor C34, capacitor C35, capacitor C36, microcontroller MAX3232ECPE, port P5 and port P6,

Pins 10, 9, 11, and 12 of the microcontroller MAX3232ECPE are connected to pins 62, 61, 60, and 59 of the control chip,

One end of the capacitor C33 is connected to pin No. 1 of the single-chip computer MAX3232ECPE, and the other end is connected to pin No. 3 of the single-chip computer MAX3232ECPE. One end of the capacitor C36 is connected to pin No. 4 of the single-chip computer MAX3232ECPE. The other end is connected to the No. 2 pin of the single-chip computer MAX3232ECPE. One end of the capacitor C34 is connected to the capacitor C35 and ground. The other end is connected to the No. 2 pin of the single-chip computer MAX3232ECPE. One end of the capacitor C35 is connected to the No. 2 pin of the single-chip computer MAX3232ECPE. The capacitor C34 is connected to the ground, and the other end is connected to the No. 6 pin of the single-chip computer MAX3232ECPE. The No. 7 pin of the single-chip computer MAX3232ECPE is connected to the No. 3 pin of the port P6. The No. 8 pin of the single-chip computer MAX3232ECPE is connected to the ground. Pin is connected to pin 3 of port P6.

8. The industrial signal acquisition and triggering system according to claim 1, further comprising:

An alarm module, connected to the microcontroller module of the main control board, generates an alarm signal when the measured signal exceeds the set limit;

Power module, used to power each module.

9. The industrial signal acquisition and triggering system according to claim 1 or 8, characterized in that:

Among them, the alarm module includes the second optocoupler isolator PC817, capacitor C35, capacitor C36, resistor R14, resistor R15, resistor R16, diode 1N4148, two-way relay, NPN transistor 8050, PNP transistor 8550, resistor R17, resistor R18 , LED lamp 6 and passive buzzer, one end of the capacitor C35 is connected to pin 1 of the second optocoupler isolator PC817 and the +5V power supply, and the other end is connected to pin 2 of the second optocoupler isolator PC817 , one end of the capacitor C36 is connected to the pin 3 of the optocoupler isolator PC817 and ground, the other end is connected to the pin 4 of the second optocoupler isolator PC817, and one end of the resistor R14 is connected to the pin of the control chip. Pin 93, the other end is connected to pin 2 of the second optocoupler isolator PC817, one end of the resistor R15 is connected to the +5V power supply, and the other end is connected to pin 4 of the second optocoupler isolator PC817. One end of the resistor R16 is connected to pin 4 of the second optocoupler isolator PC817, and the other end is connected to the base of the PNP transistor 8550. The emitter of the PNP transistor 8550 is connected to the +5V power supply, and the base is connected to the resistor R16. The collector is connected to pin 1 of the two-way relay, one end of the resistor R17 is connected to the pin 94 of the control chip, the other end is connected to the base of the NPN transistor 8050, and one end of the resistor R18 is connected to the The emitter of the NPN transistor 8050 and the pin 1 of the passive buzzer are connected to the LED lamp 6. One end of the LED lamp 6 is connected to the resistor R18, and the other end is connected to the passive buzzer. pin 2 and ground,

The power module includes a 24V input sub-module, a 12V voltage conversion sub-module, two 5V voltage conversion sub-modules with the same design, and a 24V to ±9V sub-module.

The 24V input sub-module includes an input terminal J1, a fuse F1, a capacitor C1, and a current filter T1. One end of the fuse F1 is connected to pin 2 of the input terminal J1, and the other end is connected to the current filter. The No. 1 pin of the input terminal J1 is connected to the No. 4 pin of the current filter T1. One end of the capacitor C1 is connected to the No. 2 pin of the current filter T1. pin and the 24V power supply, and the other end is connected to pin 3 of the current filter T1 and ground.

The 12V voltage conversion sub-module includes electrolytic capacitor C28, capacitor C3, voltage conversion module U1, electrolytic capacitor C4, capacitor C5, light-emitting diode VD1, resistor R1. The positive electrode of the electrolytic capacitor C2 is connected to the capacitor C3 and the +24V power supply. And the No. 2 pin of the voltage conversion module U1, the negative electrode is connected to the capacitor C3, ground and the No. 1 pin of the voltage conversion module U1, the positive electrode of the electrolytic capacitor C4 is connected to the capacitor C5, the +12V power supply, and the voltage conversion module The No. 3 pin of U1 and the anode of the light-emitting diode VD1 are connected to the capacitor C5, ground, the No. 4 pin of the voltage conversion module U1 and the resistor R1. The other end of the resistor R1 is connected to the light-emitting diode VD1. negative connection,

The 5V voltage conversion sub-module includes electrolytic capacitor C6, capacitor C7, voltage conversion module U2, electrolytic capacitor C8, capacitor C9, light-emitting diode VD2 and resistor R2. The positive electrode of the electrolytic capacitor C6 is connected to the capacitor C7 and the +24V power supply. And the No. 2 pin of the voltage conversion module U2, the negative electrode is connected to the capacitor C7, ground, and the No. 1 pin of the voltage conversion module U2, the positive electrode of the electrolytic capacitor C8 is connected to the capacitor C9, +12V The power supply, pin 3 of the voltage conversion module U2 and the anode of the light-emitting diode VD2, the cathode is connected to the capacitor C8, ground, pin 4 of the voltage conversion module U2 and the resistor R2, the The other end of the resistor R2 is connected to the negative electrode of the light-emitting diode VD2,

The 24V to ±9V sub-module includes electrolytic capacitor C14, capacitor C11, voltage conversion module U4, electrolytic capacitor C16, capacitor C17, electrolytic capacitor C20, capacitor C21, light-emitting diode VD4, resistor R4, light-emitting diode VD5 and resistor R5, so The positive electrode of the electrolytic capacitor C14 is connected to the capacitor C11, the +24V power supply and the No. 1 pin of the voltage conversion module U4, and the negative electrode is connected to the capacitor C11, ground and the No. 2 pin of the voltage conversion module U4, so The positive electrode of the capacitor C16 is connected to the capacitor C17, the +9V power supply, the positive electrode of the light-emitting diode VD4, and the No. 6 pin of the voltage conversion module U4, and the negative electrode is connected to the positive electrode of the electrolytic capacitor C20, the capacitor C17, and the The resistor R4, the capacitor C21, ground, the resistor R5 and the No. 5 pin of the power conversion module U4 are connected. The electrolytic resistor C20 is connected to the resistor R21, -9V power supply and the light-emitting diode VD5. The negative electrode is connected, the resistor R5 is connected to the anode of the light-emitting diode VD5, and the resistor R4 is connected to the anode of the light-emitting diode VD4.

10. An industrial signal acquisition and triggering method, characterized by including the following steps:

Step 1, set parameters through the display module;

Step 2, the trigger module sends a trigger signal;

Step 3: After receiving the trigger signal, the signal acquisition and processing module collects data from the acquisition channel;

Step 4: The signal acquisition and processing module sends the processing results to the data receiving and conversion module and converts them into digital signals, and the digital signals are sent to the microcontroller module of the main control board;

Step 5: Display the processed data on the display module.