Monitoring and early warning system based on equipment state

Abstract

The utility model discloses a monitoring and early warning system based on an equipment state, which belongs to the field of equipment state monitoring and comprises a main chip, a signal acquisition chip connected with the main chip, a rotating speed acquisition circuit, a 4-20mA module, a relay module, a TCP (Transmission Control Protocol) communication module, an RS485 communication module and a signal acquisition circuit connected with the signal acquisition chip. According to the utility model, the TCP communication module is adopted to wirelessly transmit data to the upper computer system, so that data acquired by different monitoring systems can be managed in a centralized manner, state information of all monitoring equipment is displayed on one computer, data sharing is realized, internal relation of data is mined, the accuracy of fault diagnosis is improved, and the working efficiency is improved. According to the technical scheme of the utility model, the monitoring system can monitor the running state of the equipment continuously, diagnoses the abnormal state in time, is provided with various channel ports, can be provided with various different sensors for monitoring according to the field monitoring condition, and has strong expandability.

Description

Technical Field

[0001] The utility model belongs to the field of equipment status monitoring, and in particular relates to a monitoring and early warning system based on equipment status. Background Art

[0002] For mechanical equipment, vibration is an important parameter that reflects the operation of the system. It depends on the design, manufacturing level and installation quality of the system, and affects the stable and reliable operation of rotating machinery. For high-speed rotating mechanical structures, vibration problems and shaft movement problems are more prominent. The radial vibration, shaft displacement and expansion differential shaft displacement of the rotor of rotating mechanical equipment are the most basic indicators for evaluating the operation status of the machinery. Many mechanical equipment failures, including rotor imbalance, misalignment, bearing wear, rotor cracks and friction, can be detected based on the measurement of rotor vibration. According to the vibration monitoring results, not only can the existing faults be detected and diagnosed before the equipment fails, and the equipment can be protected, but also whether the equipment has faults or fault trends can be found out, and the equipment can be repaired when necessary to achieve predictive maintenance, so as to maximize the service life of the equipment and minimize unexpected downtime accidents.

[0003] Currently, related equipment condition monitoring products, such as Bentley's 3300 and 3500 systems and Philips' RMS700 system, do not have fault-tolerant design, weak safety performance and advancement, and the hardware configuration and software operation are not convenient for users. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a monitoring and early warning system based on equipment status to solve the problem of automatically identifying abnormal status of equipment and ensuring safe and reliable operation of the equipment.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: a monitoring and early warning system based on equipment status, including: a main chip, a signal acquisition chip connected to the main chip, a speed acquisition circuit, a 4-20mA module, a relay module, a TCP communication module and an RS485 communication module, and a signal acquisition circuit connected to the signal acquisition chip.

[0006] Further: the signal acquisition circuit includes: a linear regulator U8;

[0007] The third pin of the linear regulator U8 is connected to one end of the capacitor C19, the positive electrode of the polarity capacitor C17 and the PWR1 power selection jumper. The other end of the capacitor C19 is respectively connected to the negative electrode of the polarity capacitor C17 and one end of the resistor R22, and is grounded. The other end of the resistor R22 is respectively connected to the first pin of the linear regulator U8, one end of the resistor R21 and one end of the resistor R120. The other end of the resistor R21 is respectively connected to the second pin of the linear regulator U8, the fourth pin of the linear regulator U8, one end of the resistor R20 and the external port S+VA1 of the signal acquisition circuit. The other end of the resistor R20 is respectively connected to the other end of the resistor R120 and the NO port of the single-pole double-throw switch SWITCH. The COM port of the single-pole double-throw switch SWITCH is connected to the 24V1 power supply. The NC port of the single-pole double-throw switch SWITCH is connected to the positive electrode of the polarity capacitor C18. The negative electrode of the polarity capacitor C18 is respectively connected to the external ports S+VB1, One end of resistor R24 ​​is connected to one end of capacitor C25, the other end of resistor R24 ​​is respectively connected to one end of resistor R77 and one end of resistor R83, the other end of capacitor C25 is connected to one end of resistor R76, the other end of resistor R76 is respectively connected to the other end of resistor R77 and the 5th pin of amplifier U7, the 6th pin of amplifier U7 is respectively connected to the 7th pin of amplifier U7 and one end of resistor R78, the 4th pin of amplifier U7 is connected to a -12V power supply, the 8th pin of amplifier U7 is connected, the other end of resistor R78 is respectively connected to one end of resistor R23, one end of capacitor C20 and the 2nd pin of amplifier U77, the 3rd pin of amplifier U77 is connected to the other end of resistor R83, the other end of resistor R23 is respectively connected to the other end of capacitor C20, the 1st pin of amplifier U77 and one end of resistor R25, the other end of resistor R25 is respectively connected to the signal acquisition chip and one end of capacitor C21, and the other end of capacitor C21 is connected to the signal acquisition chip.

[0008] Further: the speed acquisition circuit includes: an amplifier KU1A, an amplifier KU1B, an amplifier KU1C and an amplifier KU1D;

[0009] The second pin of the amplifier KU1A is respectively connected to one end of the resistor KR2, one end of the resistor KR3, one end of the resistor KR4 and one end of the resistor KC2, the other end of the resistor KR2 is respectively connected to one end of the resistor KR1 and one end of the capacitor KC1, the other end of the capacitor KC1 is connected to the speed sensor, the other end of the resistor KR1 is connected to the third pin of the amplifier KU1A and grounded, the fourth pin of the amplifier KU1A is connected to a +12V power supply, the 11th pin of the amplifier KU1A is connected to a -12V power supply, and the The 1st pin is respectively connected to the other end of the resistor KR3, the other end of the resistor KR4, the other end of the resistor KC2, the 5th pin of the amplifier KU1B and the 13th pin of the amplifier KU1D, the 6th pin of the amplifier KU1B is respectively connected to the 7th pin of the amplifier KU1B, the anode of the diode KD1 and the cathode of the diode KD2, the cathode of the diode KD1 is respectively connected to one end of the capacitor KC4 and one end of the resistor KR6, the other end of the capacitor KC4 is respectively connected to one end of the capacitor kC3 and one end of the capacitor kC5, and is grounded, the capacitor KC The other end of 3 is respectively connected to the positive electrode of diode KD2 and one end of resistor KR5, the other end of resistor KR5 is respectively connected to the other end of capacitor KC5, the other end of resistor KR6 and the 10th pin of amplifier KU1C, the 9th pin of amplifier KU1C is respectively connected to the 8th pin of amplifier KU1C and one end of resistor KR7, the other end of resistor KR7 is respectively connected to one end of resistor KR8 and the 12th pin of amplifier KU1D, the 14th pin of amplifier KU1D is respectively connected to the other end of resistor KR8 and diode The positive electrode of KD3 is connected, the negative electrode of diode KD3 is connected to one end of resistor KR9, the other end of resistor KR9 is respectively connected to one end of grounding resistor KR10 and the 9th pin of hexaphase inverting Schmitt trigger KU2D, the positive electrode of hexaphase inverting Schmitt trigger KU2D is respectively connected to +5V power supply and one end of capacitor KC6, the other end of capacitor KC6 is grounded, the negative electrode of hexaphase inverting Schmitt trigger KU2D is grounded, the 8th pin of hexaphase inverting Schmitt trigger KU2D is connected to one end of resistor R63 as KEY port, and the other end of resistor R63 is connected to the main chip.

[0010] Further: the 4-20mA module includes: a digital-to-analog converter U3;

[0011] The first pin of the digital-to-analog converter U3 is connected to the PE0 pin of the main chip, the second pin of the digital-to-analog converter U3 is connected to the PA11 pin of the main chip, the ninth pin of the digital-to-analog converter U3 is respectively connected to the PB4-MISO pin and the PB7 pin of the main chip, the fifteenth pin of the digital-to-analog converter U3 is connected to the PB5-MOSI pin of the main chip, and the sixteenth pin of the digital-to-analog converter U3 is respectively connected to the PB3-SCK pin and the PB6 pin of the main chip;

[0012] The 3rd pin of the digital-to-analog converter U3 is respectively connected to one end of the capacitor C3, the positive electrode of the polar capacitor C4 and the +5V / 5A power supply, the other end of the capacitor C3 is respectively connected to the 14th pin of the digital-to-analog converter U3 and the negative electrode of the polar capacitor C4, and is grounded, the 8th pin of the digital-to-analog converter U3 is respectively connected to the REF standard voltage and one end of the capacitor C5, the other end of the capacitor C5 is grounded, the 4th pin, the 5th pin, the 6th pin, the 7th pin, the 10th pin, the 11th pin, the 12th pin and the 13th pin of the digital-to-analog converter U3 are all current output ports, and the specific circuit structure is the same;

[0013] The 4th pin of the digital-to-analog converter U3 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the 5th pin of the amplifier U4B, the 6th pin of the amplifier U4B is respectively connected to one end of the grounding resistor R6 and one end of the resistor R7, the other end of the resistor R7 is respectively connected to the output end of the amplifier U4B and one end of the resistor R8, the other end of the resistor R8 is respectively connected to one end of the resistor R10 and the 3rd pin of the amplifier U4A, the 2nd pin of the amplifier U4A is respectively connected to one end of the grounding resistor R9 and one end of the grounding resistor R11, the 11th pin of the amplifier U4A is grounded, and the amplifier The 4th pin of U4A is respectively connected to the +12V power supply and one end of the resistor R12, the other end of the resistor R12 is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to the 1st pin of the amplifier U4A, the emitter of the transistor Q1 is respectively connected to the other end of the resistor R11 and one end of the resistor R13, the other end of the resistor R13 is respectively connected to the 10th pin of the amplifier U4C and the positive electrode of the diode D1, the 9th pin of the amplifier U4C is respectively connected to the 8th pin of the amplifier U4C and the other end of the resistor R10, and the cathode of the diode D1 serves as the current output port of the 4-20mA module.

[0014] Further: the RS485 communication module includes: a Schmitt trigger inverter U40A, a Schmitt trigger inverter U40B, a communication chip U41 and a communication chip U42;

[0015] The 1st pin of the Schmitt trigger inverter U40A is connected to the main chip as the RS485_DIR_1 port, the 14th pin of the Schmitt trigger inverter U40A is connected to the 5V power supply, the 7th pin of the Schmitt trigger inverter U40A is grounded, the 2nd pin of the Schmitt trigger inverter U40A is respectively connected to the 2nd pin and the 3rd pin of the communication chip U41, the 1st pin of the communication chip U41 is connected to the main chip as the RS485_RX-1 port, the 4th pin of the communication chip U41 is connected to the main chip as the RS485_TX_1 port, the 5th pin of the communication chip U41 is grounded, and the The 8th pin of the communication chip U41 is connected to a 5V power supply, the 6th pin of the communication chip U41 is respectively connected to one end of the resistor R130, the cathode of the Schottky diode D3 and one end of the resistor R132, the anode of the Schottky diode D3 is connected to the anode of the Schottky diode D4, the cathode of the Schottky diode D4 is grounded, the other end of the resistor R132 is connected to the RS485 serial port line, the 7th pin of the communication chip U41 is respectively connected to the other end of the resistor R130, the cathode of the Schottky diode D1 and one end of the resistor R131, the anode of the Schottky diode D1 is connected to the anode of the Schottky diode D2, the cathode of the Schottky diode D2 is grounded, the The other end of the resistor R131 is connected to the RS485 serial port line, the 3rd pin of the Schmitt trigger inverter U40B is connected to the main chip as the RS485_DIR_4 port, the 4th pin of the Schmitt trigger inverter U40B is respectively connected to the 2nd pin and the 3rd pin of the communication chip U42, the 1st pin of the communication chip U42 is connected to the main chip as the RS485_RX-4 port, the 4th pin of the communication chip U42 is connected to the main chip as the RS485_TX_4 port, the 5th pin of the communication chip U42 is grounded, the 8th pin of the communication chip U42 is connected to the 5V power supply, and the communication The 6th pin of chip U42 is respectively connected to one end of resistor R133, the cathode of Schottky diode D7 and one end of resistor R135, the anode of Schottky diode D7 is connected to the anode of Schottky diode D8, the cathode of Schottky diode D8 is grounded, and the other end of resistor R135 is connected to the RS485 serial port line. The 7th pin of communication chip U42 is respectively connected to the other end of resistor R133, the cathode of Schottky diode D5 and one end of resistor R134, the anode of Schottky diode D5 is connected to the anode of Schottky diode D6, the cathode of Schottky diode D6 is grounded, and the other end of resistor R134 is connected to the RS485 serial port line.

[0016] Further: the relay module comprises a relay chip U1;

[0017] The D1 pin, D2 pin, D3 pin, D4 pin, D5 pin, D6 pin, D7 pin, D8 pin and CLK pin of the relay chip U1 are respectively connected to the PC0 pin, PC2 pin, PA5 pin, PA6 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin and PC13 pin of the main chip, and the CLR pin of the relay chip U1 is respectively connected to one end of the resistor R50, the positive electrode of the polarity capacitor C50 and the positive electrode of the polarity capacitor C51. The negative electrode of polar capacitor C50 is respectively connected to the negative electrode of polar capacitor C51, the positive electrode of polar capacitor C52 and the positive electrode of polar capacitor C53, the negative electrode of polar capacitor C52 is connected to the negative electrode of polar capacitor C53 and grounded, and the second pin, the fifth pin, the sixth pin, the ninth pin, the twelfth pin, the fifteenth pin, the sixteenth pin and the nineteenth pin of the relay chip correspond to the CH1 channel, the CH2 channel, the CH3 channel, the CH4 channel, the CH5 channel, the CH6 channel, the CH7 channel and the CH8 channel respectively;

[0018] The circuit structures of the CH1 channel, the CH2 channel, the CH3 channel, the CH4 channel, the CH5 channel, the CH6 channel, the CH7 channel and the CH8 channel are the same, and are all relay module output control circuits.

[0019] Further: the CH7 channel is connected to the 16th pin of the relay chip U1;

[0020] The 16th pin of the relay chip U1 is respectively connected to the cathode of the diode D13 and one end of the resistor R13, the anode of the diode D13 is respectively connected to the cathode of the rectifier diode Z7, the other end of the resistor R13 and the anode of the polarity capacitor C7, the anode of the rectifier diode Z7 is connected to the base of the transistor Q7, the emitter of the transistor Q7 is connected to the cathode of the polarity capacitor C7 and is grounded, the collector of the transistor Q7 is respectively connected to the 5th pin of the relay RE7 and the anode of the diode D14, the cathode of the diode D14 is respectively connected to the 4th pin of the relay RE7 and one end of the resistor R14, the other end of the resistor R14 is connected to the +12V power supply, and the NC7 pin, NO7 pin and N$7 pin of the relay RE7 are respectively connected to the 3rd pin, 1st pin and 2nd pin of the port DJ7.

[0021] The beneficial effects of the utility model are as follows: the utility model adopts a TCP communication module to wirelessly transmit data to an external host computer system, can centrally manage data collected by different monitoring systems through the network, display status information of all monitoring equipment on a computer screen, realize data sharing, further explore the connection between the internal data, improve the accuracy of fault diagnosis, ensure continuous monitoring of the equipment operation status, and diagnose abnormal conditions in time. At the same time, the utility model is connected with a pin header, and can install a variety of different sensors for monitoring according to the on-site monitoring situation, and has strong scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the structural diagram of the monitoring and early warning system based on equipment status;

[0023] Figure 2 is the specific circuit structure of the signal acquisition circuit;

[0024] Figure 3 The specific circuit structure of the speed acquisition circuit;

[0025] Figure 4 It is an optional jumper for the speed acquisition circuit;

[0026] Figure 5 It is the specific circuit structure of RS485 communication module;

[0027] Figure 6 This is the specific circuit structure diagram of the 4-20mA module;

[0028] Figure 7 This is the pin connection diagram between the 4-20mA module and the main chip;

[0029] Figure 8 This is the specific circuit structure diagram of the relay module. DETAILED DESCRIPTION

[0030] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0031] like Figure 1As shown, in one embodiment of the utility model, the utility model provides a monitoring and early warning system based on equipment status, including: a main chip, a signal acquisition chip connected to the main chip, a speed acquisition circuit, a 4-20mA module, a relay module, a TCP communication module and an RS485 communication module, and a signal acquisition circuit connected to the signal acquisition chip;

[0032] Among them, the signal acquisition circuit is used to collect data and transmit it to the signal acquisition chip;

[0033] The signal acquisition chip is used to receive the data transmitted by the signal acquisition circuit and transmit it to the main chip after processing the data;

[0034] 4-20mA module, used to output current according to the signal of the main chip;

[0035] Relay module, used to control the output of analog channels;

[0036] TCP communication module, used for wireless data transmission with the host computer database;

[0037] RS482 communication module is used for wired data transmission with the local device of the lower computer.

[0038] The signal acquisition circuit is connected to the sensor, and can obtain the data of the sensor and transmit it to the signal acquisition chip. The speed acquisition circuit is connected to the speed sensor.

[0039] Table 1 is a specific wiring diagram of the main chip and each module, and Table 2 is a specific wiring diagram of the signal acquisition chip and the signal acquisition circuit.

[0040] Table 1

[0041]

[0042]

[0043]

[0044] Table 2

[0045]

[0046]

[0047] Now, the circuit of the monitoring and early warning system based on the equipment status of the utility model is described in combination with Table 1 and Table 2:

[0048] In one embodiment of the utility model, the model of the main chip is STM32F407VET6, the model of the signal acquisition chip is AD7616BSTZ-RL, the model of the amplifier KU1A, the amplifier KU1B, the amplifier KU1C, the amplifier KU1D, the amplifier U4A, the amplifier U4B and the amplifier U4C are all LF444, the specific models of the Schmitt trigger inverter U40A and the Schmitt trigger inverter U40B are both 74HC14, the model of the communication chip U41 and the communication chip U42 are both 75LBC184, the model of the linear regulator U8 is LM317MQDCYR, the TCP communication module adopts the network chip model DP83848CVVX, and the model of the relay chip U1 is 74HC273.

[0049] like Figure 2 As shown, the specific circuit structure of the signal acquisition circuit is shown. The signal acquisition circuit is connected to the signal acquisition chip. One signal acquisition chip is connected to 16 signal acquisition circuits. In this embodiment, one of the signal acquisition circuits is used as an example for explanation. The signal acquisition circuit includes: a linear regulator U8;

[0050] The third pin of the linear regulator U8 is connected to one end of the capacitor C19, the positive electrode of the polarity capacitor C17 and the PWR1 power selection jumper. The other end of the capacitor C19 is connected to the negative electrode of the polarity capacitor C17 and one end of the resistor R22 and grounded. The other end of the resistor R22 is connected to the first pin of the linear regulator U8, one end of the resistor R21 and one end of the resistor R120. The other end of the resistor R21 is connected to the second pin of the linear regulator U8, the fourth pin of the linear regulator U8, the resistor R20 The other end of the resistor R20 is connected to the other end of the resistor R120 and the NO port of the single-pole double-throw switch SWITCH, the COM port of the single-pole double-throw switch SWITCH is connected to the 24V1 power supply, the NC port of the single-pole double-throw switch SWITCH is connected to the positive electrode of the polarity capacitor C18, and the negative electrode of the polarity capacitor C18 is connected to the external port S+VB1 of the signal acquisition circuit, one end of the resistor R24 ​​and one end of the capacitor C25. The first end of the amplifier U7 is connected to the first pin of the amplifier U7 and the second pin of the amplifier U7. The second end of the amplifier U7 is connected to the first pin of the amplifier U7 and the second pin of the amplifier U7. The third pin of the amplifier U7 is connected to the other end of the resistor R83. The other end of the resistor R23 is connected to the other end of the capacitor C20, the first pin of the amplifier U77 and the first end of the resistor R25. The other end of the resistor R25 is connected to the signal acquisition chip AD7616BSTZ-RL and one end of the capacitor C21. The other end of the capacitor C21 is connected to the signal acquisition chip AD7616BSTZ-RL.

[0051] Among them, the power supply PWR1 power selection jumper can choose to connect one of the +24V power supply and -24V power supply on the circuit board. The 1 in the 24V1 power supply is the 24V power supply corresponding to the first channel. The signal acquisition chip can detect different signal types by setting different parameters (range: 0-4): 0: vibration, swing displacement sensor signal, AC voltage peak-to-peak signal; 1: vibration velocity sensor signal, AC voltage peak-to-peak signal; 2: vibration velocity sensor signal, AC voltage effective value signal; 3: vibration acceleration sensor signal, AC voltage signal; 4: shaft displacement sensor signal, DC voltage signal.

[0052] like Figure 3As shown, the specific circuit structure of the speed acquisition circuit includes: amplifier KU1A, amplifier KU1B, amplifier KU1C and amplifier KU1D;

[0053] The second pin of the amplifier KU1A is connected to one end of the resistor KR2, one end of the resistor KR3, one end of the resistor KR4 and one end of the resistor KC2 respectively. The other end of the resistor KR2 is connected to one end of the resistor KR1 and one end of the capacitor KC1 respectively. The other end of the capacitor KC1 is connected to the speed sensor as the IN1 port. The other end of the resistor KR1 is connected to the third pin of the amplifier KU1A and grounded. The fourth pin of the amplifier KU1A is connected to the +12V power supply. The 11th pin of the amplifier KU1A is connected to the -12V power supply. The first pin of KU1A is respectively connected to the other end of the resistor KR3, the other end of the resistor KR4, the other end of the resistor KC2, the fifth pin of the amplifier KU1B and the thirteenth pin of the amplifier KU1D, the sixth pin of the amplifier KU1B is respectively connected to the seventh pin of the amplifier KU1B, the anode of the diode KD1 and the cathode of the diode KD2, the cathode of the diode KD1 is respectively connected to one end of the capacitor KC4 and one end of the resistor KR6, the other end of the capacitor KC4 is respectively connected to one end of the capacitor kC3 and one end of the capacitor kC5, and The other end of the capacitor KC3 is connected to the positive electrode of the diode KD2 and one end of the resistor KR5 respectively. The other end of the resistor KR5 is connected to the other end of the capacitor KC5, the other end of the resistor KR6 and the 10th pin of the amplifier KU1C respectively. The 9th pin of the amplifier KU1C is connected to the 8th pin of the amplifier KU1C and one end of the resistor KR7 respectively. The other end of the resistor KR7 is connected to one end of the resistor KR8 and the 12th pin of the amplifier KU1D respectively. The 14th pin of the amplifier KU1D is connected to the other end of the resistor KR8 respectively. The positive electrode of the six-phase inverting Schmitt trigger KU2D is connected to the +5V power supply and one end of the capacitor KC6, the other end of the capacitor KC6 is grounded, the negative electrode of the six-phase inverting Schmitt trigger KU2D is grounded, and the 8th pin of the six-phase inverting Schmitt trigger KU2D is connected to one end of the resistor R63 as the KEY port, as shown in FIG. Figure 4 As shown, J3 is an optional jumper of the speed acquisition circuit. When the signal acquisition circuit is needed, the other end of the resistor R63 is connected to the INT0 pin of the main chip STM32F407VET6. When the signal acquisition circuit is not needed, the INT0 pin of the main chip STM32F407VET6 is connected to GND.

[0054] Among them, the IN1 port is connected to the first pin of the JP15 power strip, the third pin of the JP15 power strip is connected to the power supply, and the second pin of the JP15 power strip is grounded.

[0055] like Figure 5 As shown, the RS485 communication module includes: a Schmitt trigger inverter U40A, a Schmitt trigger inverter U40B, a communication chip U41 and a communication chip U42;

[0056] The first pin of Schmitt trigger inverter U40A is connected to the PA8 pin of the main chip as the RS485_DIR_1 port, the 14th pin of Schmitt trigger inverter U40A is connected to the 5V power supply, the 7th pin of Schmitt trigger inverter U40A is grounded, the 2nd pin of Schmitt trigger inverter U40A is respectively connected to the 2nd pin and the 3rd pin of communication chip U41, the 1st pin of communication chip U41 is connected to the PA10 pin of the main chip as the RS485_RX-1 port, the 4th pin of communication chip U41 is connected to the PA9 pin of the main chip as the RS485_TX_1 port, the 5th pin of communication chip U41 is connected to the PA10 pin of the main chip, and the 6th pin of communication chip U41 is connected to the PA10 pin of the main chip. Grounded, the 8th pin of the communication chip U41 is connected to the 5V power supply, the 6th pin of the communication chip U41 is respectively connected to one end of the resistor R130, the cathode of the Schottky diode D3 and one end of the resistor R132, the anode of the Schottky diode D3 is connected to the anode of the Schottky diode D4, the cathode of the Schottky diode D4 is grounded, the other end of the resistor R132 is connected to the RS485 serial port line, the 7th pin of the communication chip U41 is respectively connected to the other end of the resistor R130, the cathode of the Schottky diode D1 and one end of the resistor R131, the anode of the Schottky diode D1 is connected to the anode of the Schottky diode D2, and the cathode of the Schottky diode D2 is grounded , the other end of the resistor R131 is connected to the RS485 serial port line, the 3rd pin of the Schmitt trigger inverter U40B is connected to the PB1 pin of the main chip as the RS485_DIR_4 port, the 4th pin of the Schmitt trigger inverter U40B is connected to the 2nd and 3rd pins of the communication chip U42 respectively, the 1st pin of the communication chip U42 is connected to the PC11 pin of the main chip as the RS485_RX-4 port, the 4th pin of the communication chip U42 is connected to the PC10 pin of the main chip as the RS485_TX_4 port, the 5th pin of the communication chip U42 is grounded, and the 8th pin of the communication chip U42 is connected to the 5V power supply, The 6th pin of the communication chip U42 is respectively connected to one end of the resistor R133, the cathode of the Schottky diode D7 and one end of the resistor R135, the anode of the Schottky diode D7 is connected to the anode of the Schottky diode D8, the cathode of the Schottky diode D8 is grounded, and the other end of the resistor R135 is connected to the RS485 serial port line. The 7th pin of the communication chip U42 is respectively connected to the other end of the resistor R133, the cathode of the Schottky diode D5 and one end of the resistor R134, the anode of the Schottky diode D5 is connected to the anode of the Schottky diode D6, the cathode of the Schottky diode D6 is grounded, and the other end of the resistor R134 is connected to the RS485 serial port line.

[0057] like Figure 6As shown in FIG. 1 , it is a specific circuit structure diagram of the 4-20mA module, including a digital-to-analog converter U3. In this embodiment, the specific model of the digital-to-analog converter U3 is AD5668BRUZ-2. The 1st pin, the 2nd pin, the 9th pin, the 15th pin and the 16th pin of the digital-to-analog converter U3 are connected to the main chip through a pin header to transmit signals to the main chip. The specific connection method is as follows: Figure 7 As shown, the first pin of the digital-to-analog converter U3 is connected to the PE0 pin of the main chip STM32F407VET6, the second pin of the digital-to-analog converter U3 is connected to the PA11 pin of the main chip STM32F407VET6, the ninth pin of the digital-to-analog converter U3 is respectively connected to the PB4-MISO pin and the PB7 pin of the main chip STM32F407VET6, the fifteenth pin of the digital-to-analog converter U3 is connected to the PB5-MOSI pin of the main chip STM32F407VET6, and the sixteenth pin of the digital-to-analog converter U3 is respectively connected to the PB3-SCK pin and the PB6 pin of the main chip STM32F407VET6;

[0058] The 3rd pin of the digital-to-analog converter U3 is respectively connected to one end of the capacitor C3, the positive electrode of the polar capacitor C4 and the +5V / 5A power supply, the other end of the capacitor C3 is respectively connected to the 14th pin of the digital-to-analog converter U3 and the negative electrode of the polar capacitor C4, and is grounded, the 8th pin of the digital-to-analog converter U3 is respectively connected to the REF standard voltage and one end of the capacitor C5, the other end of the capacitor C5 is grounded, and the 4th pin, the 5th pin, the 6th pin, the 7th pin, the 10th pin, the 11th pin, the 12th pin and the 13th pin of the digital-to-analog converter U3 are all current output ports;

[0059] In this embodiment, the current output port corresponding to the 4th pin is selected as an example for explanation, the 4th pin of the digital-to-analog converter U3 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the 5th pin of the amplifier U4B, the 6th pin of the amplifier U4B is respectively connected to one end of the grounding resistor R6 and one end of the resistor R7, the other end of the resistor R7 is respectively connected to the output end of the amplifier U4B and one end of the resistor R8, the other end of the resistor R8 is respectively connected to one end of the resistor R10 and the 3rd pin of the amplifier U4A, the 2nd pin of the amplifier U4A is respectively connected to one end of the grounding resistor R9 and one end of the grounding resistor R11, and the amplifier U4 The 11th pin of A is grounded, the 4th pin of amplifier U4A is respectively connected to the +12V power supply and one end of resistor R12, the other end of resistor R12 is connected to the collector of transistor Q1, the base of transistor Q1 is connected to the 1st pin of amplifier U4A, the emitter of transistor Q1 is respectively connected to the other end of resistor R11 and one end of resistor R13, the other end of resistor R13 is respectively connected to the 10th pin of amplifier U4C and the positive electrode of diode D1, the 9th pin of amplifier U4C is respectively connected to the 8th pin of amplifier U4C and the other end of resistor R10, and the cathode of diode D1 serves as the current output port of 4-20mA module.

[0060] like Figure 8 As shown, it is a specific circuit structure diagram of the relay module, including a relay chip U1, wherein the D1 pin, D2 pin, D3 pin, D4 pin, D5 pin, D6 pin, D7 pin, D8 pin and CLK pin of the relay chip U1 are respectively connected to the PC0 pin, PC2 pin, PA5 pin, PA6 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin and PC13 pin of the main chip STM32F407VET6, and the first pin of the relay chip U1 is respectively connected to one end of the resistor R50, the positive electrode of the polarity capacitor C50 and the polarity capacitor The positive electrode of polar capacitor C51 is connected, the negative electrode of polar capacitor C50 is respectively connected to the negative electrode of polar capacitor C51, the positive electrode of polar capacitor C52 and the positive electrode of polar capacitor C53, the negative electrode of polar capacitor C52 is connected to the negative electrode of polar capacitor C53 and grounded, the 2nd pin, the 5th pin, the 6th pin, the 9th pin, the 12th pin, the 15th pin, the 16th pin and the 19th pin of the relay chip correspond to CH1 channel, CH2 channel, CH3 channel, CH4 channel, CH5 channel, CH6 channel, CH7 channel and CH8 channel respectively, and are all used as relay module output control circuits, such as Figure 8As shown, taking the CH7 channel as an example for explanation, the 16th pin of the relay chip U1 is respectively connected to the cathode of the diode D13 and one end of the resistor R13, the anode of the diode D13 is respectively connected to the cathode of the rectifier diode Z7, the other end of the resistor R13 and the anode of the polarity capacitor C7, the anode of the rectifier diode Z7 is connected to the base of the transistor Q7, the emitter of the transistor Q7 is connected to the cathode of the polarity capacitor C7 and is grounded, the collector of the transistor Q7 is respectively connected to the 5th pin of the relay RE7 and the anode of the diode D14, the cathode of the diode D14 is respectively connected to the 4th pin of the relay RE7 and one end of the resistor R14, the other end of the resistor R14 is connected to the +12V power supply, and the NC7 pin, NO7 pin and N$7 pin of the relay RE7 are respectively connected to the 3rd pin, the 1st pin and the 2nd pin of the port DJ7.

[0061] The following is an explanation of the working principle of the monitoring and early warning system based on the equipment status according to its circuit structure:

[0062] The main chip STM32F407VET6 controls 16 signal acquisition circuits through the signal acquisition chip AD7616BSTZ-RL. Each signal acquisition circuit is connected to a displacement sensor, a velocity sensor and an acceleration sensor through an external port. In this embodiment, the external ports of the first channel are S+VA1, S+VB1, GND and 24V1. The external sensor selects one of S+VA1 and S+VB1 for connection through a jumper. The collected device status data is transmitted to the signal acquisition chip AD7616BSTZ-RL through the VAI0 and VAG0 pins for preliminary data processing and aggregation. The signal acquisition chip AD7616BSTZ-RL transmits the preliminary processed data to the main chip STM32F407 VET6, the main chip STM32F407VET6 is connected to the speed acquisition circuit and the speed sensor through the NIT0 pin to monitor the speed of the equipment and transmit it back to the main chip STM32F407VET6. The main chip STM32F407VET6 can analyze the data and determine whether it is within the normal range. If it exceeds the normal range, the main chip will generate a warning message and trigger an alarm through the relay module. The main chip STM32F407VET6 can transmit signals through the 1st pin, 2nd pin, 9th pin, 15th pin and 16th pin of the digital-to-analog converter U3 in the 4-20mA module. After receiving the signal, the 4-20mA module outputs the corresponding current to the current output interface of the main chip through PB6 and PB7;

[0063] The main chip STM32F407VET6 transmits wired data with the lower computer through the RS485 communication module. The lower computer can visualize the data transmitted by the main chip through display screens and other means. The main chip STM32F407VET6 transmits data with the upper computer database through the TCP communication module, which facilitates the upper computer server to analyze and store data.

[0064] Through the TCP communication module, the network chip DP83848CVVX host computer communicates with the wireless network. The host computer can store the received data and analyze abnormal situations. It can monitor the dynamics of mechanical equipment in real time and online, display and analyze data, and send alarm signals when abnormal conditions occur.

[0065] The beneficial effects of the utility model are as follows: the utility model adopts a TCP communication module to wirelessly transmit data to a host computer system, can centrally manage data collected by different monitoring systems through a network, display status information of all monitoring equipment on a computer screen, realize data sharing, further explore the connections between the internal data, improve the accuracy of fault diagnosis, ensure continuous monitoring of the equipment operation status, and diagnose abnormal conditions in time. At the same time, the utility model is connected with a pin header, and can install a variety of different sensors for monitoring according to the on-site monitoring situation, and has strong scalability.

Claims

1. A monitoring and early warning system based on equipment status, characterized in that: include: A main chip, a signal acquisition chip connected to the main chip respectively, a speed acquisition circuit, a 4-20mA module, a relay module, a TCP communication module and an RS485 communication module, and a signal acquisition circuit connected to the signal acquisition chip.

2. The monitoring and early warning system based on equipment status according to claim 1 is characterized in that: The signal acquisition circuit includes: a linear regulator U8; The third pin of the linear regulator U8 is connected to one end of the capacitor C19, the positive electrode of the polarity capacitor C17 and the PWR1 power selection jumper. The other end of the capacitor C19 is respectively connected to the negative electrode of the polarity capacitor C17 and one end of the resistor R22, and is grounded. The other end of the resistor R22 is respectively connected to the first pin of the linear regulator U8, one end of the resistor R21 and one end of the resistor R120. The other end of the resistor R21 is respectively connected to the second pin of the linear regulator U8, the fourth pin of the linear regulator U8, one end of the resistor R20 and the external port S+VA1 of the signal acquisition circuit. The other end of the resistor R20 is respectively connected to the other end of the resistor R120 and the NO port of the single-pole double-throw switch SWITCH. The COM port of the single-pole double-throw switch SWITCH is connected to the 24V1 power supply. The NC port of the single-pole double-throw switch SWITCH is connected to the positive electrode of the polarity capacitor C18. The negative electrode of the polarity capacitor C18 is respectively connected to the external ports S+VB1, One end of resistor R24 ​​is connected to one end of capacitor C25, the other end of resistor R24 ​​is respectively connected to one end of resistor R77 and one end of resistor R83, the other end of capacitor C25 is connected to one end of resistor R76, the other end of resistor R76 is respectively connected to the other end of resistor R77 and the 5th pin of amplifier U7, the 6th pin of amplifier U7 is respectively connected to the 7th pin of amplifier U7 and one end of resistor R78, the 4th pin of amplifier U7 is connected to a -12V power supply, the 8th pin of amplifier U7 is connected, the other end of resistor R78 is respectively connected to one end of resistor R23, one end of capacitor C20 and the 2nd pin of amplifier U77, the 3rd pin of amplifier U77 is connected to the other end of resistor R83, the other end of resistor R23 is respectively connected to the other end of capacitor C20, the 1st pin of amplifier U77 and one end of resistor R25, the other end of resistor R25 is respectively connected to the signal acquisition chip and one end of capacitor C21, and the other end of capacitor C21 is connected to the signal acquisition chip.

3. The monitoring and early warning system based on equipment status according to claim 1 is characterized in that: The speed acquisition circuit includes: an amplifier KU1A, an amplifier KU1B, an amplifier KU1C and an amplifier KU1D; The second pin of the amplifier KU1A is respectively connected to one end of the resistor KR2, one end of the resistor KR3, one end of the resistor KR4 and one end of the resistor KC2, the other end of the resistor KR2 is respectively connected to one end of the resistor KR1 and one end of the capacitor KC1, the other end of the capacitor KC1 is connected to the speed sensor, the other end of the resistor KR1 is connected to the third pin of the amplifier KU1A and grounded, the fourth pin of the amplifier KU1A is connected to a +12V power supply, the 11th pin of the amplifier KU1A is connected to a -12V power supply, and the The 1st pin is respectively connected to the other end of the resistor KR3, the other end of the resistor KR4, the other end of the resistor KC2, the 5th pin of the amplifier KU1B and the 13th pin of the amplifier KU1D, the 6th pin of the amplifier KU1B is respectively connected to the 7th pin of the amplifier KU1B, the anode of the diode KD1 and the cathode of the diode KD2, the cathode of the diode KD1 is respectively connected to one end of the capacitor KC4 and one end of the resistor KR6, the other end of the capacitor KC4 is respectively connected to one end of the capacitor kC3 and one end of the capacitor kC5, and is grounded, the capacitor KC The other end of 3 is respectively connected to the positive electrode of diode KD2 and one end of resistor KR5, the other end of resistor KR5 is respectively connected to the other end of capacitor KC5, the other end of resistor KR6 and the 10th pin of amplifier KU1C, the 9th pin of amplifier KU1C is respectively connected to the 8th pin of amplifier KU1C and one end of resistor KR7, the other end of resistor KR7 is respectively connected to one end of resistor KR8 and the 12th pin of amplifier KU1D, the 14th pin of amplifier KU1D is respectively connected to the other end of resistor KR8 and diode The positive electrode of KD3 is connected, the negative electrode of diode KD3 is connected to one end of resistor KR9, the other end of resistor KR9 is respectively connected to one end of grounding resistor KR10 and the 9th pin of hexaphase inverting Schmitt trigger KU2D, the positive electrode of hexaphase inverting Schmitt trigger KU2D is respectively connected to +5V power supply and one end of capacitor KC6, the other end of capacitor KC6 is grounded, the negative electrode of hexaphase inverting Schmitt trigger KU2D is grounded, the 8th pin of hexaphase inverting Schmitt trigger KU2D is connected to one end of resistor R63 as KEY port, and the other end of resistor R63 is connected to the main chip.

4. The monitoring and early warning system based on equipment status according to claim 1 is characterized in that: The 4-20mA module includes: a digital-to-analog converter U3; The first pin of the digital-to-analog converter U3 is connected to the PE0 pin of the main chip, the second pin of the digital-to-analog converter U3 is connected to the PA11 pin of the main chip, the ninth pin of the digital-to-analog converter U3 is respectively connected to the PB4-MISO pin and the PB7 pin of the main chip, the fifteenth pin of the digital-to-analog converter U3 is connected to the PB5-MOSI pin of the main chip, and the sixteenth pin of the digital-to-analog converter U3 is respectively connected to the PB3-SCK pin and the PB6 pin of the main chip; The 3rd pin of the digital-to-analog converter U3 is respectively connected to one end of the capacitor C3, the positive electrode of the polar capacitor C4 and the +5V / 5A power supply, the other end of the capacitor C3 is respectively connected to the 14th pin of the digital-to-analog converter U3 and the negative electrode of the polar capacitor C4, and is grounded, the 8th pin of the digital-to-analog converter U3 is respectively connected to the REF standard voltage and one end of the capacitor C5, the other end of the capacitor C5 is grounded, the 4th pin, the 5th pin, the 6th pin, the 7th pin, the 10th pin, the 11th pin, the 12th pin and the 13th pin of the digital-to-analog converter U3 are all current output ports, and the specific circuit structure is the same; The 4th pin of the digital-to-analog converter U3 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the 5th pin of the amplifier U4B, the 6th pin of the amplifier U4B is respectively connected to one end of the grounding resistor R6 and one end of the resistor R7, the other end of the resistor R7 is respectively connected to the output end of the amplifier U4B and one end of the resistor R8, the other end of the resistor R8 is respectively connected to one end of the resistor R10 and the 3rd pin of the amplifier U4A, the 2nd pin of the amplifier U4A is respectively connected to one end of the grounding resistor R9 and one end of the grounding resistor R11, the 11th pin of the amplifier U4A is grounded, and the amplifier The 4th pin of U4A is respectively connected to the +12V power supply and one end of the resistor R12, the other end of the resistor R12 is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to the 1st pin of the amplifier U4A, the emitter of the transistor Q1 is respectively connected to the other end of the resistor R11 and one end of the resistor R13, the other end of the resistor R13 is respectively connected to the 10th pin of the amplifier U4C and the positive electrode of the diode D1, the 9th pin of the amplifier U4C is respectively connected to the 8th pin of the amplifier U4C and the other end of the resistor R10, and the cathode of the diode D1 serves as the current output port of the 4-20mA module.

5. The monitoring and early warning system based on equipment status according to claim 1 is characterized in that: The RS485 communication module includes: a Schmitt trigger inverter U40A, a Schmitt trigger inverter U40B, a communication chip U41 and a communication chip U42; The 1st pin of the Schmitt trigger inverter U40A is connected to the main chip as the RS485_DIR_1 port, the 14th pin of the Schmitt trigger inverter U40A is connected to the 5V power supply, the 7th pin of the Schmitt trigger inverter U40A is grounded, the 2nd pin of the Schmitt trigger inverter U40A is respectively connected to the 2nd pin and the 3rd pin of the communication chip U41, the 1st pin of the communication chip U41 is connected to the main chip as the RS485_RX-1 port, the 4th pin of the communication chip U41 is connected to the main chip as the RS485_TX_1 port, the 5th pin of the communication chip U41 is grounded, and the The 8th pin of the communication chip U41 is connected to a 5V power supply, the 6th pin of the communication chip U41 is respectively connected to one end of the resistor R130, the cathode of the Schottky diode D3 and one end of the resistor R132, the anode of the Schottky diode D3 is connected to the anode of the Schottky diode D4, the cathode of the Schottky diode D4 is grounded, the other end of the resistor R132 is connected to the RS485 serial port line, the 7th pin of the communication chip U41 is respectively connected to the other end of the resistor R130, the cathode of the Schottky diode D1 and one end of the resistor R131, the anode of the Schottky diode D1 is connected to the anode of the Schottky diode D2, the cathode of the Schottky diode D2 is grounded, the The other end of the resistor R131 is connected to the RS485 serial port line, the 3rd pin of the Schmitt trigger inverter U40B is connected to the main chip as the RS485_DIR_4 port, the 4th pin of the Schmitt trigger inverter U40B is respectively connected to the 2nd pin and the 3rd pin of the communication chip U42, the 1st pin of the communication chip U42 is connected to the main chip as the RS485_RX-4 port, the 4th pin of the communication chip U42 is connected to the main chip as the RS485_TX_4 port, the 5th pin of the communication chip U42 is grounded, the 8th pin of the communication chip U42 is connected to the 5V power supply, and the communication The 6th pin of chip U42 is respectively connected to one end of resistor R133, the cathode of Schottky diode D7 and one end of resistor R135, the anode of Schottky diode D7 is connected to the anode of Schottky diode D8, the cathode of Schottky diode D8 is grounded, and the other end of resistor R135 is connected to the RS485 serial port line. The 7th pin of communication chip U42 is respectively connected to the other end of resistor R133, the cathode of Schottky diode D5 and one end of resistor R134, the anode of Schottky diode D5 is connected to the anode of Schottky diode D6, the cathode of Schottky diode D6 is grounded, and the other end of resistor R134 is connected to the RS485 serial port line.

6. The monitoring and early warning system based on equipment status according to claim 1 is characterized in that: The relay module comprises a relay chip U1; The D1 pin, D2 pin, D3 pin, D4 pin, D5 pin, D6 pin, D7 pin, D8 pin and CLK pin of the relay chip U1 are respectively connected to the PC0 pin, PC2 pin, PA5 pin, PA6 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin and PC13 pin of the main chip, and the CLR pin of the relay chip U1 is respectively connected to one end of the resistor R50, the positive electrode of the polarity capacitor C50 and the positive electrode of the polarity capacitor C51. The negative electrode of polar capacitor C50 is respectively connected to the negative electrode of polar capacitor C51, the positive electrode of polar capacitor C52 and the positive electrode of polar capacitor C53, the negative electrode of polar capacitor C52 is connected to the negative electrode of polar capacitor C53 and grounded, and the second pin, the fifth pin, the sixth pin, the ninth pin, the twelfth pin, the fifteenth pin, the sixteenth pin and the nineteenth pin of the relay chip correspond to the CH1 channel, the CH2 channel, the CH3 channel, the CH4 channel, the CH5 channel, the CH6 channel, the CH7 channel and the CH8 channel respectively; The circuit structures of the CH1 channel, the CH2 channel, the CH3 channel, the CH4 channel, the CH5 channel, the CH6 channel, the CH7 channel and the CH8 channel are the same, and are all relay module output control circuits.

7. The monitoring and early warning system based on equipment status according to claim 6 is characterized in that: The CH7 channel is connected to the 16th pin of the relay chip U1; The 16th pin of the relay chip U1 is respectively connected to the cathode of the diode D13 and one end of the resistor R13, the anode of the diode D13 is respectively connected to the cathode of the rectifier diode Z7, the other end of the resistor R13 and the anode of the polarity capacitor C7, the anode of the rectifier diode Z7 is connected to the base of the transistor Q7, the emitter of the transistor Q7 is connected to the cathode of the polarity capacitor C7 and is grounded, the collector of the transistor Q7 is respectively connected to the 5th pin of the relay RE7 and the anode of the diode D14, the cathode of the diode D14 is respectively connected to the 4th pin of the relay RE7 and one end of the resistor R14, the other end of the resistor R14 is connected to the +12V power supply, and the NC7 pin, NO7 pin and N$7 pin of the relay RE7 are respectively connected to the 3rd pin, 1st pin and 2nd pin of the port DJ7.

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