Data acquisition terminal monitoring equipment fault intelligent positioning and early warning system

Abstract

The utility model discloses an intelligent fault positioning and early warning system for data acquisition terminal monitoring equipment, which relates to the technical field of fault positioning and comprises a plurality of data acquisition terminal monitoring equipment, a fault detection and positioning terminal, an internet of things platform and a remote monitoring alarm terminal. Parameters of data acquisition terminal monitoring equipment are monitored in real time through a high-frequency sensor, a circulating current sensor and a voltage sensor, and the functions of partial discharge signal on-line monitoring, circulating current on-line monitoring, grounding fault line selection and fault positioning are included. According to the utility model, simultaneous monitoring of a plurality of data acquisition terminal monitoring devices is supported, when fault equipment is detected, the location of the fault equipment is positioned in real time through the positioning module, and maintenance personnel are notified to repair in time, so that online intelligent monitoring of the plurality of data acquisition terminal monitoring devices is completed; and the equipment cost investment and the operation and maintenance difficulty are greatly reduced in the fault monitoring and positioning process.

Description

Technical Field

[0001] The utility model belongs to the technical field of fault positioning of data acquisition terminal monitoring equipment, and in particular relates to an intelligent fault positioning and early warning system for data acquisition terminal monitoring equipment. Background Art

[0002] With the advancement of national smart grid construction, the large-scale intelligent deployment of distribution networks, which are diverse and have widely varying equipment, faces the challenge of enormous capital investment. To date, nearly two decades of pilot projects for distribution network automation have still covered less than 8% of the power supply area. Traditional distribution network automation solutions are characterized by high investment costs, low cost-effectiveness, high requirements for primary equipment, long construction cycles, and difficult maintenance, making them difficult to implement on a large scale. With the rapid advancement of national smart grid construction and State Grid Corporation's "Three Integrations and Five Majors" initiative, the widespread intelligent deployment of distribution networks is imperative.

[0003] At present, the distribution network automation system is basically built in each province and has played the expected important role. However, various factors such as design and cost have resulted in certain limitations in the benefits and detection objects of the automation system. There is an urgent need for a cost-effective, safe and effective monitoring equipment and application system to supplement and improve the automation system, which is the fault location system and fault indicator equipment.

[0004] Device parameters are collected in real time through terminal devices, and the data is pushed to the IoT platform. The IoT platform pre-processes the data and sends the pre-processed data to the message queue. The terminal data in the message queue is then analyzed in real time through Spark and other methods to obtain the operating status of the terminal device, realize the fault location of distribution operation terminal equipment, and real-time early warning of three-phase current distribution operation and maintenance power outage and three-phase imbalance. An online early warning abnormal closed-loop processing mechanism is established to better assist operation and maintenance personnel in handling abnormal faults and system maintenance, reduce operation and maintenance costs, improve the timeliness of fault operation and maintenance response, and increase the company's market competitiveness. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system in response to the deficiencies of the background technology, which effectively completes the fault intelligent positioning and early warning of the data acquisition terminal monitoring equipment.

[0006] The present invention adopts the following technical solutions to solve the above technical problems:

[0007] A data acquisition terminal monitoring equipment fault intelligent positioning and early warning system includes multiple data acquisition terminal monitoring devices and a fault detection and positioning terminal for fault detection and positioning, which is arranged in a one-to-one correspondence with the data acquisition terminal monitoring devices; the system also includes an Internet of Things platform and a remote monitoring and alarm terminal, wherein the fault detection and positioning terminal is connected to the Internet of Things platform, and the Internet of Things platform is connected to the remote monitoring and alarm terminal;

[0008] The fault detection and positioning terminal includes a high-frequency sensor, a circulating current sensor, a voltage sensor, a sensor conditioning circuit, a filtering circuit, an amplifying circuit, a high-frequency A / D sampling circuit, a controller module, a positioning module, a clock module, a memory module, a LOT module, and a power supply module. The high-frequency sensor, circulating current sensor, and voltage sensor are respectively connected to the controller module through the sensor conditioning circuit, the filtering circuit, the amplifying circuit, and the high-frequency A / D sampling circuit. The positioning module, clock module, memory module, LOT module, and power supply module are respectively connected to the controller module.

[0009] As a further preferred solution of the data acquisition terminal monitoring equipment fault intelligent positioning and early warning system of the utility model, the remote monitoring alarm terminal includes a data transceiver module, a main control module, an alarm module, a data storage module, an interface module, and a human-computer interaction module; the data transceiver module, the alarm module, the data storage module, the interface module, and the human-computer interaction module are respectively connected to the main control module.

[0010] As a further preferred solution of the intelligent positioning and early warning system for faults of a data acquisition terminal monitoring equipment of the utility model, the sensor signal conditioning circuit includes an analog signal input end, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input end is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input end of the operational amplifier U1, and the negative input end of the operational amplifier U1 is connected to the output end of the operational amplifier U1.

[0011] As a further preferred solution of the intelligent positioning and early warning system for faults of a data acquisition terminal monitoring device of the utility model, the filtering circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, an operational amplifier, and a power supply chip. One end of the first resistor is connected to the output end of the three-stage amplifier circuit, the other end of the first resistor is connected to one end of the first capacitor and one end of the second capacitor and then to one end of the second resistor, the other end of the first capacitor is connected to one end of the third resistor and then to the negative input end of the operational amplifier, and the other end of the second capacitor The other end of the third resistor is connected to the output end of the operational amplifier, and the other end of the second resistor is grounded; the positive input end of the operational amplifier is connected to the fourth resistor and the fifth resistor in sequence and then grounded, the positive power supply end of the operational amplifier is respectively connected to one end of the third capacitor and one end of the sixth resistor, the other end of the sixth resistor is connected to the positive pole of the power supply, the other end of the third capacitor is grounded, the negative power supply end of the operational amplifier is respectively connected to one end of the seventh resistor and one end of the fourth capacitor, the other end of the seventh resistor is connected to the negative pole of the power supply chip, and the other end of the fourth capacitor is grounded; the output end of the operational amplifier is connected in series with the fifth capacitor and then connected to the input end of the microcontroller module.

[0012] As a further preferred solution of the intelligent fault positioning and early warning system for data acquisition terminal monitoring equipment of the utility model, the power supply module includes a 24V voltage input terminal, a diode D1, a diode D2, a diode D3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a chip U1, a chip U2, a chip U3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an inductor L1, an inductor L2, a 12V voltage output terminal, a +5V voltage output terminal, and a +3.3V voltage output terminal;

[0013] Among them, the 24V voltage input end is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is respectively connected to one end of the capacitor C3, the positive electrode of the capacitor E1, one end of the resistor R1, and the pin 6 of the chip U1. The other end of the resistor R1 is respectively connected to the pin 7 of the chip U1, the pin 8 of the chip U1 and the pin 1 of the chip U1. The pin 2 of the chip U1 is respectively connected to the negative electrode of the diode D2 and one end of the inductor L1. The other end of the inductor L1 is respectively connected to the positive electrode of the capacitor E1, one end of the capacitor C1 and the 12V voltage output The other end of capacitor C1 is connected to the negative electrode of capacitor E1, the positive electrode of diode D2, one end of capacitor C4, pin 4 of chip U1, one end of resistor R5, the negative electrode of capacitor E3 and the other end of capacitor C3. The other end of capacitor C4 is connected to pin 3 of chip U1. The other end of resistor R5 is connected to pin 5 of chip U1 and one end of resistor R3. The other end of resistor R3 is connected to the 12V voltage output terminal. The other end of capacitor C3 is also connected to one end of capacitor C5, the positive electrode of capacitor E4, resistor R5 and the negative electrode of capacitor E3. One end of resistor R2 is connected to pin 6 of chip U2. The other end of resistor R2 is connected to pin 7 of chip U2, pin 8 of chip U2 and pin 1 of chip U2 respectively. Pin 2 of chip U2 is connected to the cathode of diode D3 and one end of inductor L2 respectively. The other end of inductor L2 is connected to the anode of capacitor E2, one end of capacitor C2, +5V voltage output terminal and pin 3 of chip U3 respectively. The other end of capacitor C2 is connected to pin 1 of chip U3, the cathode of capacitor E5, one end of capacitor C7 and capacitor E2 respectively. The negative electrode of the chip U2, the positive electrode of the diode D3, one end of the capacitor C6, the pin 4 of the chip U2, one end of the resistor R6, the negative electrode of the capacitor E4 and the other end of the capacitor C5, the other end of the capacitor C6 is connected to the pin 3 of the chip U2, the other end of the resistor R6 is respectively connected to the pin 5 of the chip U2 and one end of the resistor R4, the other end of the resistor R4 is connected to the +5V voltage output terminal, the other end of the capacitor C7 is respectively connected to the positive electrode of the capacitor E5, the pin 2 of the chip U3, the pin 4 of the chip U3 and the +3.3V voltage output terminal.

[0014] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0015] 1. The utility model provides a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system, which includes multiple data acquisition terminal monitoring devices and a fault detection and positioning terminal for fault detection and positioning, which is arranged in a one-to-one correspondence with the data acquisition terminal monitoring devices; it also includes an Internet of Things platform and a remote monitoring alarm terminal. It uses high-frequency sensors, circulating current sensors, and voltage sensors to monitor various parameters of the data acquisition terminal monitoring devices in real time, including the functions of online monitoring of partial discharge signals, online monitoring of circulating currents, ground fault line selection, and fault location. It has the characteristics of richer functions and higher integration, facilitates unified management, and has high information reliability.

[0016] 2. The utility model supports simultaneous monitoring of multiple data acquisition terminal monitoring devices. When a faulty device is detected, the location of the faulty device is located in real time through the positioning module, and the maintenance personnel are notified in time to repair it. The online intelligent monitoring of multiple data acquisition terminal monitoring devices is completed, and the equipment cost investment and operation and maintenance difficulty are greatly reduced in the process of realizing fault monitoring and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structural principle diagram of a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system of the utility model;

[0018] Figure 2 This is a structural principle diagram of the fault detection and positioning terminal of the utility model;

[0019] Figure 3 This is the principle diagram of the remote monitoring alarm terminal of the utility model;

[0020] Figure 4 This is a circuit diagram of the sensor signal conditioning circuit of the utility model;

[0021] Figure 5 This is a circuit diagram of the filter circuit of the utility model;

[0022] Figure 6 It is a circuit diagram of the power module of the utility model. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings:

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] An intelligent fault location and early warning system for data acquisition terminal monitoring equipment, such as Figure 1 As shown, it includes multiple data acquisition terminal monitoring devices, and a fault detection and positioning terminal for fault detection and positioning arranged in a one-to-one correspondence with the data acquisition terminal monitoring devices; it also includes an Internet of Things platform and a remote monitoring alarm terminal, the fault detection and positioning terminal is connected to the Internet of Things platform, and the Internet of Things platform is connected to the remote monitoring alarm terminal;

[0026] like Figure 2As shown, the fault detection and positioning terminal includes a high-frequency sensor, a circulating current sensor, a voltage sensor, a sensor conditioning circuit, a filter circuit, an amplifier circuit, a high-frequency A / D sampling circuit, a controller module, a positioning module, a clock module, a memory module, a LOT module, and a power module. The high-frequency sensor, the circulating current sensor, and the voltage sensor are respectively connected to the controller module through the sensor conditioning circuit, the filter circuit, the amplifier circuit, and the high-frequency A / D sampling circuit. The positioning module, the clock module, the memory module, the LOT module, and the power module are respectively connected to the controller module.

[0027] The utility model discloses an intelligent fault location and early warning system for data acquisition terminal monitoring equipment, comprising a plurality of data acquisition terminal monitoring equipment and a fault detection and location terminal for fault detection and location, which is arranged in a one-to-one correspondence with the data acquisition terminal monitoring equipment; the utility model also comprises an Internet of Things platform and a remote monitoring alarm terminal, which monitors various parameters of the data acquisition terminal monitoring equipment in real time through high-frequency sensors, circulating current sensors, and voltage sensors, including the functions of online monitoring of partial discharge signals, online monitoring of circulating currents, ground fault line selection, and fault location. The utility model has the characteristics of richer functions and higher integration, facilitates unified management, and has high information reliability.

[0028] The utility model supports simultaneous monitoring of multiple data acquisition terminal monitoring devices. When a faulty device is detected, the location of the faulty device is located in real time through the positioning module, and maintenance personnel are notified in time to repair it. The online intelligent monitoring of multiple data acquisition terminal monitoring devices is completed, and the equipment cost investment and operation and maintenance difficulty are greatly reduced in the process of realizing fault monitoring and positioning.

[0029] (1) Partial discharge online monitoring function: The obtained partial discharge signal is used to monitor the insulation status of the equipment in real time. When the amplitude and frequency of the partial discharge signal are found to have abnormal changes, the data acquisition terminal monitoring equipment is promptly warned of failure. The frequency band information of the partial discharge signal is accurately obtained, and the specific partial discharge type is identified by comparing the differences between different discharge pulse signals.

[0030] (2) Circulating current online monitoring function: The obtained circulating current signal is used to monitor the insulation status of the metal sheath of the data acquisition terminal monitoring equipment in real time online. When the circulating current signal shows abnormal changes, the data acquisition terminal is warned of insulation abnormality of the outer sheath of the monitoring equipment.

[0031] (3) Ground fault line selection function: The voltage and current traveling wave signals appearing in each data acquisition terminal monitoring device when a fault occurs are collected. Based on the different characteristics of the traveling wave signals when a ground fault occurs at different data acquisition terminal monitoring devices, the wavelet packet algorithm is used to locate the fault point specifically on the data acquisition terminal monitoring device, thereby realizing the ground fault line selection function.

[0032] (4) Fault ranging function: After locating the fault location data acquisition terminal monitoring equipment, the fault ranging function is reliably started by combining the collected data acquisition terminal monitoring equipment power frequency signal.

[0033] like Figure 3 As shown, the remote monitoring alarm terminal includes a data transceiver module, a main control module, an alarm module, a data storage module, an interface module, and a human-computer interaction module; the data transceiver module, the alarm module, the data storage module, the interface module, and the human-computer interaction module are respectively connected to the main control module.

[0034] like Figure 4 As shown, the sensor signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

[0035] like Figure 5 As shown, the filtering circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, an operational amplifier, and a power supply chip. One end of the first resistor is connected to the output end of the three-stage amplifier circuit, the other end of the first resistor is connected to one end of the first capacitor and one end of the second capacitor and then to one end of the second resistor, the other end of the first capacitor is connected to one end of the third resistor and then to the negative input end of the operational amplifier, the other end of the second capacitor is connected to the other end of the third resistor and then to the output end of the operational amplifier, and the other end of the second resistor is grounded; the positive input end of the operational amplifier is connected to the fourth resistor and the fifth resistor in sequence and then to ground, the positive power supply end of the operational amplifier is respectively connected to one end of the third capacitor and one end of the sixth resistor, the other end of the sixth resistor is connected to the positive pole of the power supply, the other end of the third capacitor is grounded, the negative power supply end of the operational amplifier is respectively connected to one end of the seventh resistor and one end of the fourth capacitor, the other end of the seventh resistor is connected to the negative pole of the power supply chip, and the other end of the fourth capacitor is grounded; the output end of the operational amplifier is connected in series with the fifth capacitor and then to the input end of the microcontroller module.

[0036] like Figure 6As shown, the power supply module includes a 24V voltage input terminal, a diode D1, a diode D2, a diode D3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a chip U1, a chip U2, a chip U3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an inductor L1, an inductor L2, a 12V voltage output terminal, a +5V voltage output terminal, and a +3.3V voltage output terminal;

[0037] Among them, the 24V voltage input end is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is respectively connected to one end of the capacitor C3, the positive electrode of the capacitor E1, one end of the resistor R1, and the pin 6 of the chip U1. The other end of the resistor R1 is respectively connected to the pin 7 of the chip U1, the pin 8 of the chip U1 and the pin 1 of the chip U1. The pin 2 of the chip U1 is respectively connected to the negative electrode of the diode D2 and one end of the inductor L1. The other end of the inductor L1 is respectively connected to the positive electrode of the capacitor E1, one end of the capacitor C1 and the 12V voltage output The other end of capacitor C1 is connected to the negative electrode of capacitor E1, the positive electrode of diode D2, one end of capacitor C4, pin 4 of chip U1, one end of resistor R5, the negative electrode of capacitor E3 and the other end of capacitor C3. The other end of capacitor C4 is connected to pin 3 of chip U1. The other end of resistor R5 is connected to pin 5 of chip U1 and one end of resistor R3. The other end of resistor R3 is connected to the 12V voltage output terminal. The other end of capacitor C3 is also connected to one end of capacitor C5, the positive electrode of capacitor E4, resistor R5 and the negative electrode of capacitor E3. One end of resistor R2 is connected to pin 6 of chip U2. The other end of resistor R2 is connected to pin 7 of chip U2, pin 8 of chip U2 and pin 1 of chip U2 respectively. Pin 2 of chip U2 is connected to the cathode of diode D3 and one end of inductor L2 respectively. The other end of inductor L2 is connected to the anode of capacitor E2, one end of capacitor C2, +5V voltage output terminal and pin 3 of chip U3 respectively. The other end of capacitor C2 is connected to pin 1 of chip U3, the cathode of capacitor E5, one end of capacitor C7 and capacitor E2 respectively. The negative electrode of the chip U2, the positive electrode of the diode D3, one end of the capacitor C6, the pin 4 of the chip U2, one end of the resistor R6, the negative electrode of the capacitor E4 and the other end of the capacitor C5, the other end of the capacitor C6 is connected to the pin 3 of the chip U2, the other end of the resistor R6 is respectively connected to the pin 5 of the chip U2 and one end of the resistor R4, the other end of the resistor R4 is connected to the +5V voltage output terminal, the other end of the capacitor C7 is respectively connected to the positive electrode of the capacitor E5, the pin 2 of the chip U3, the pin 4 of the chip U3 and the +3.3V voltage output terminal.

[0038] This circuit has high efficiency, precise voltage regulation, and low interference. It can convert the input 24V power supply into +12V, +5V and +3.3V DC power, providing +12V, +5V and +3.3V DC voltages, and can provide power supply for multiple chips and circuits at the same time.

[0039] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0040] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0041] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A data acquisition terminal monitoring equipment fault intelligent positioning and early warning system, characterized by: It includes multiple data acquisition terminal monitoring devices, and a fault detection and positioning terminal for fault detection and positioning arranged in a one-to-one correspondence with the data acquisition terminal monitoring devices; it also includes an Internet of Things platform and a remote monitoring alarm terminal, the fault detection and positioning terminal is connected to the Internet of Things platform, and the Internet of Things platform is connected to the remote monitoring alarm terminal; The fault detection and positioning terminal includes a high-frequency sensor, a circulating current sensor, a voltage sensor, a sensor conditioning circuit, a filtering circuit, an amplifying circuit, a high-frequency A / D sampling circuit, a controller module, a positioning module, a clock module, a memory module, a LOT module, and a power module. The high-frequency sensor, the circulating current sensor, and the voltage sensor are respectively connected to the controller module through the sensor conditioning circuit, the filtering circuit, the amplifying circuit, and the high-frequency A / D sampling circuit. The positioning module, the clock module, the memory module, the LOT module, and the power module are respectively connected to the controller module.

2. According to claim 1, a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system is characterized by: The remote monitoring alarm terminal comprises a data transceiver module, a main control module, an alarm module, a data storage module, an interface module, and a human-computer interaction module; the data transceiver module, the alarm module, the data storage module, the interface module, and the human-computer interaction module are respectively connected to the main control module.

3. According to claim 1, a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system is characterized by: The sensor signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

4. According to claim 1, a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system is characterized by: The filtering circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, an operational amplifier, and a power chip. One end of the first resistor is connected to the output end of the three-stage amplifier circuit, the other end of the first resistor is connected to one end of the first capacitor and one end of the second capacitor and then connected to one end of the second resistor, the other end of the first capacitor is connected to one end of the third resistor and then connected to the negative input end of the operational amplifier, the other end of the second capacitor is connected to the other end of the third resistor and then connected to the output end of the operational amplifier, and the other end of the second resistor is grounded; the positive input end of the operational amplifier is connected to the fourth resistor and the fifth resistor in sequence and then connected to the ground, the positive power supply end of the operational amplifier is respectively connected to one end of the third capacitor and one end of the sixth resistor, the other end of the sixth resistor is connected to the positive electrode of the power supply, the other end of the third capacitor is grounded, the negative power supply end of the operational amplifier is respectively connected to one end of the seventh resistor and one end of the fourth capacitor, the other end of the seventh resistor is connected to the negative electrode of the power chip, and the other end of the fourth capacitor is grounded; the output end of the operational amplifier is connected in series with the fifth capacitor and then connected to the input end of the microcontroller module.

5. According to claim 1, a data acquisition terminal monitoring equipment fault intelligent positioning and early warning system is characterized by: The power module includes a 24V voltage input terminal, a diode D1, a diode D2, a diode D3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a chip U1, a chip U2, a chip U3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an inductor L1, an inductor L2, a 12V voltage output terminal, a +5V voltage output terminal, and a +3.3V voltage output terminal; Among them, the 24V voltage input end is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is respectively connected to one end of the capacitor C3, the positive electrode of the capacitor E1, one end of the resistor R1, and the pin 6 of the chip U1. The other end of the resistor R1 is respectively connected to the pin 7 of the chip U1, the pin 8 of the chip U1 and the pin 1 of the chip U1. The pin 2 of the chip U1 is respectively connected to the negative electrode of the diode D2 and one end of the inductor L1. The other end of the inductor L1 is respectively connected to the positive electrode of the capacitor E1, one end of the capacitor C1 and the 12V voltage output. The other end of capacitor C1 is connected to the negative electrode of capacitor E1, the positive electrode of diode D2, one end of capacitor C4, pin 4 of chip U1, one end of resistor R5, the negative electrode of capacitor E3 and the other end of capacitor C3. The other end of capacitor C4 is connected to pin 3 of chip U1. The other end of resistor R5 is connected to pin 5 of chip U1 and one end of resistor R3. The other end of resistor R3 is connected to the 12V voltage output terminal. The other end of capacitor C3 is also connected to one end of capacitor C5, the positive electrode of capacitor E4, resistor One end of resistor R2 is connected to pin 6 of chip U2. The other end of resistor R2 is connected to pin 7 of chip U2, pin 8 of chip U2 and pin 1 of chip U2 respectively. Pin 2 of chip U2 is connected to the cathode of diode D3 and one end of inductor L2 respectively. The other end of inductor L2 is connected to the anode of capacitor E2, one end of capacitor C2, +5V voltage output terminal and pin 3 of chip U3 respectively. The other end of capacitor C2 is connected to pin 1 of chip U3, the cathode of capacitor E5, one end of capacitor C7 and capacitor E2 respectively. The cathode of the chip U2, the anode of the diode D3, one end of the capacitor C6, the pin 4 of the chip U2, one end of the resistor R6, the cathode of the capacitor E4 and the other end of the capacitor C5. The other end of the capacitor C6 is connected to the pin 3 of the chip U2. The other end of the resistor R6 is respectively connected to the pin 5 of the chip U2 and one end of the resistor R4. The other end of the resistor R4 is connected to the +5V voltage output terminal. The other end of the capacitor C7 is respectively connected to the anode of the capacitor E5, the pin 2 of the chip U3, the pin 4 of the chip U3 and the +3.3V voltage output terminal.

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