Wireless remote fault intelligent judgment system and device

Abstract

The utility model provides a wireless remote fault intelligent judgment system and device. The wireless remote fault intelligent judgment system comprises an MCU, a sensor module, an acquisition module, a wireless transmission module and a power supply module. The sensor module, the acquisition module and the wireless transmission module are all connected with the MCU, and the MCU, the sensor module, the acquisition module and the wireless transmission module are all connected with the power supply module; the sensor module is in contact with equipment and is used for acquiring a working state signal of the equipment; the acquisition module is connected with a current output end of the equipment or is close to the equipment and is used for acquiring an electric signal of the equipment; the MCU is used for processing the working state signal and the electric signal to obtain equipment data, and the wireless transmission module is used for sending the equipment data to a host. The working state of the rotating equipment is accurately monitored in real time, and potential problems of the equipment can be found and solved in time.

Description

Technical Field

[0001] The utility model relates to the technical field of electromechanical operation and maintenance, and in particular to a wireless remote fault intelligent judgment system and device. Background Art

[0002] Rotating equipment is an important part of electromechanical equipment, and they are widely used in various industrial manufacturing and production processes. The high efficiency, stability and safety performance of these equipment play a vital role in industrial production and the development of the national economy. Rotating equipment (pumps, generators, fans, motors, elevators, etc.) are widely used in commercial complexes, hotels, residences, high-end villas, municipal administration, industrial and mining scenes, etc. These equipment not only improve people's quality of life, but also promote social development and progress. Therefore, the operating status of these equipment is closely related to production and life.

[0003] The existing solution is that when the rotating equipment is damaged, the technicians will reversely investigate and find the cause based on the results, and then repair it; this will result in a long troubleshooting time and low maintenance efficiency. The second is to set up real-time monitoring of the rotating equipment status so that equipment failure can be discovered in time. The more accurate the data of the detection status, the earlier the fault can be discovered, thereby accurately and timely warning, avoiding production interruption losses and safety problems caused by equipment failure. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a wireless remote fault intelligent judgment system and device, which can accurately detect the amplitude, current, temperature and other data of the rotating equipment in real time, so as to monitor the working status of the rotating equipment in real time, and can promptly discover and solve potential problems of the equipment, improve the operation and maintenance efficiency of the building's mechanical and electrical equipment, and speed up the smart city property.

[0005] The utility model is realized by the following technical solutions:

[0006] A wireless remote fault intelligent judgment system comprises an MCU, a sensor module, an acquisition module, a wireless transmission module and a power module; the sensor module, the acquisition module and the wireless transmission module are all connected to the MCU, and the MCU, the sensor module, the acquisition module and the wireless transmission module are all connected to the power module; the sensor module is used to acquire the working state signal of the equipment; the acquisition module comprises an acquisition component, a bias voltage component, a negative feedback operational amplifier component and a common-phase amplifier component, the acquisition component is connected to or close to the current output end of the equipment, and is used to acquire the current signal of the equipment and output a voltage signal, the output end of the acquisition component and the output end of the bias voltage component are respectively connected to the input end of the negative feedback operational amplifier component, the output end of the negative feedback operational amplifier component is connected to the common-phase input end of the common-phase amplifier component, the output end of the common-phase amplifier component is connected to the MCU, and the output voltage of the bias voltage component is adjustable; the MCU is used to process the working state signal and the electrical signal to obtain the equipment data, and the wireless transmission module is used to send the equipment data to the host; and also comprises a battery module, the MCU, the sensor module, the acquisition module and the wireless transmission module are all connected to the battery module, and the battery module is used to provide power to the system when the power module cannot work.

[0007] Furthermore, the acquisition component includes a sampling resistor and a second amplifier; the two ends of the sampling resistor are respectively connected to the two input ends of the second amplifier, the in-phase input end of the second amplifier is grounded through a 30th resistor, and the inverting input end of the second amplifier is connected to its output end through a first feedback resistor;

[0008] The sampling resistor is used to input a sampling current signal, and the second amplifier is used to amplify the voltage difference between the two ends of the sampling resistor to obtain a voltage signal.

[0009] Furthermore, the bias voltage component includes a voltage divider component and a fourth amplifier, the voltage divider component includes a first variable resistor and a voltage divider resistor connected in series, the output end of the first variable resistor is connected to the non-inverting input end of the fourth amplifier, the inverting input end of the fourth amplifier is connected to its output end, and the output end of the fourth amplifier is connected to the inverting input end of the negative feedback operational amplifier component.

[0010] Furthermore, the negative feedback operational amplifier component includes a first amplifier, the non-inverting input terminal of the first amplifier is connected to the output terminal of the acquisition component, the inverting input terminal of the first amplifier is connected to the output terminal of the bias voltage component, the non-inverting input terminal of the first amplifier is grounded through a thirty-four resistor, and the inverting input terminal of the first amplifier and its output terminal are connected through a second feedback resistor.

[0011] Furthermore, the common-phase amplifier component includes a third amplifier, the common-phase input terminal of the third amplifier is connected to the output terminal of the negative feedback operational amplifier component, the inverting input terminal of the third amplifier is connected to the output terminal of the third amplifier through the fixed terminal of the second variable resistor, the active terminal of the second variable resistor is connected to one of the fixed terminals, and the inverting input terminal of the third amplifier and the common terminal of the second variable resistor are grounded through a resistor.

[0012] Furthermore, the battery module includes a charging management chip, a battery, and a DCDC module connected in sequence; the input end of the charging management chip is connected to an external power supply, and the charging management chip is used to charge the battery; the DCDC module is used to convert the battery voltage into a supply voltage.

[0013] Furthermore, the battery module also includes a power detection module connected to the battery, the power detection module is connected to the MCU, and the power detection module is used to monitor the battery power in real time and feed back to the MCU.

[0014] Furthermore, the sensor module includes a vibration sensor, a temperature and humidity sensor, and a noise sensor.

[0015] Furthermore, the wireless remote fault intelligent judgment system also includes a storage module connected to the MCU for storing device data.

[0016] Furthermore, the host includes a wireless receiving module, a main controller, a second power module and a data transmission unit. The wireless receiving module, the main controller and the data transmission unit are all connected to the second power module, and the second power module supplies power to them; the wireless receiving module and the data transmission unit are both connected to the main controller; the wireless receiving module is used to receive device data transmitted by the wireless transmission module, the main controller is used to process the device data to obtain monitoring data, and the data transmission unit is used to transmit the monitoring data to the cloud platform.

[0017] A wireless remote fault intelligent judgment device comprises the above-mentioned wireless remote fault intelligent judgment system.

[0018] Furthermore, the device also includes a shell, and the MCU, sensor module, acquisition module, wireless transmission module, and power module are arranged in the shell; a magnet is arranged on the shell, and the shell is installed on the device through magnetic attraction.

[0019] Compared with the prior art, the technical solution of the utility model and its beneficial effects are as follows:

[0020] (1) In the utility model, the bias voltage component outputs the bias voltage to the negative feedback operational amplifier component, and the bias voltage is set to achieve the stability of the bias voltage and the offset of the temperature change, thereby improving the performance and reliability of the device, and thus improving the acquisition accuracy. The negative feedback operational amplifier component is used to change the working performance of the acquisition module to reduce the error of the collected voltage signal, thereby improving the acquisition accuracy. Finally, the voltage signal is amplified by the in-phase amplifier component and transmitted to the MCU after the noise is filtered out, so as to achieve the accurate acquisition of the electrical signal of the rotating device. By real-time and accurate monitoring of the amplitude, swing, temperature, current, voltage, power, power-on status, etc. of the rotating device, potential problems of the equipment can be discovered and solved in time, avoiding production interruptions and life troubles caused by unexpected failures; due to real-time monitoring, equipment failures can be discovered in time to avoid safety hazards, such as fire and explosion, thereby improving production efficiency and safety.

[0021] (2) The utility model also provides a battery module for the device to provide power to the system when the power module fails to work, thereby making the system applicable to more scenarios.

[0022] (3) In the system of the utility model, the slaves corresponding to the rotating equipment point-to-point transmit data to the host. A host can monitor the working status of several rotating equipment at the same time. For residents, buildings are our carriers. There are nearly 20 kinds of electromechanical equipment in the building. Whether they can operate normally is closely related to the lives of residents. Through the monitoring of the integrated Internet of Things device, the failure of electromechanical equipment can be predicted in advance, the operation and maintenance efficiency of the building's electromechanical equipment can be improved, and the speed of smart city property can be accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a principle block diagram of a wireless remote fault intelligent judgment system provided by an embodiment of the utility model;

[0024] Figure 2 It is a circuit schematic diagram of a power module provided by an embodiment of the utility model;

[0025] Figure 3 It is a circuit schematic diagram of the MCU provided by the embodiment of the utility model;

[0026] Figure 4 It is a circuit schematic diagram of the acquisition module provided in the embodiment of the utility model;

[0027] Figure 5 is a circuit schematic diagram of a sensor group provided by an embodiment of the utility model;

[0028] Figure 6 It is a circuit schematic diagram of a wireless transmission module provided by an embodiment of the utility model;

[0029] Figure 7 It is a circuit schematic diagram of the LORA module provided by the embodiment of the utility model;

[0030] Figure 8 It is a circuit schematic diagram of a battery module provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] See also Figure 1 A wireless remote fault intelligent judgment system includes an MCU, a sensor module, a collection module, a wireless transmission module, a power module and a storage module. The MCU, the sensor module, the collection module and the wireless transmission module are all connected to the power module, and the power module supplies power to them. The sensor module, the collection module, the wireless transmission module and the storage module are all connected to the MCU.

[0033] The sensor module is used to collect the working status signals of the equipment, such as amplitude, temperature and humidity, and sound signals, and transmit the working status signals to the MCU. The acquisition module is connected to the current output terminal of the device, and is used to collect the electrical signals of the equipment, such as current signals, voltage signals, power-on status, etc., and transmit the electrical signals to the MCU. The MCU processes the working status signals and electrical signals to obtain the equipment data, the storage module stores the equipment data, and sends the equipment data to the host through the wireless transmission module. The current sensor of the acquisition module can be mainly divided into: shunt, electromagnetic current transformer, electronic current transformer, etc. according to different measurement principles. Therefore, the connection method between the current sensor and the equipment is different. Some need to be connected to the circuit of the equipment, and some can be close to the power supply of the equipment. There is no limitation here.

[0034] The acquisition module includes an acquisition component, a bias voltage component, a negative feedback operational amplifier component and a common-phase amplifier component. The acquisition component is connected to or close to the current output end of the device, and is used to collect the current signal of the device and output a voltage signal. The output end of the acquisition component is connected to the common-phase input end of the negative feedback operational amplifier component, the output end of the bias voltage component is connected to the inverting input end of the negative feedback operational amplifier component, the output end of the negative feedback operational amplifier component is connected to the common-phase input end of the common-phase amplifier component, and the output end of the common-phase amplifier component is connected to the MCU. The bias voltage component outputs the bias voltage to the negative feedback operational amplifier component, and the bias voltage is set to achieve the offset of the stability of the bias voltage and the temperature change, improve the performance and reliability of the device, and thus improve the acquisition accuracy. The negative feedback operational amplifier component is used to change the working performance of the acquisition module to reduce the error of the collected voltage signal, thereby improving the acquisition accuracy. Finally, the voltage signal is amplified by the common-phase amplifier component and the noise is filtered out and then transmitted to the MCU to achieve accurate acquisition of the electrical signal of the rotating device. In this embodiment, the output voltage of the bias voltage component is adjustable, so that the acquisition module is suitable for rotating devices with different working currents.

[0035] Real-time and accurate monitoring of the amplitude, swing, temperature, current, voltage, power, power-on status, etc. of electromechanical equipment can promptly discover and resolve potential equipment problems, avoiding production interruptions caused by unexpected failures. Due to real-time monitoring, equipment failures can be discovered in a timely manner to avoid safety hazards such as fire and explosion, thereby improving production efficiency and safety.

[0036] See also Figure 2 This embodiment provides a specific embodiment circuit of a power module, which adjusts the external 24V voltage to 5V through the power chip XL7015E1, and adjusts the 5V voltage to 3.3V through the power chip TC2117-3.3VDBTR to power each module of the system.

[0037] See also Figure 3 This embodiment provides a specific embodiment circuit of MCU, which adopts 32-bit single-chip microcomputer GD32F103RBT6.

[0038] See also Figure 4 , this embodiment provides a specific embodiment circuit of the acquisition module. The acquisition component includes a sampling resistor R27 and a second amplifier U5.2. The two ends of the sampling resistor R27 are respectively connected to the two input ends of the second amplifier U5.2, the in-phase input end of the second amplifier U5.2 is grounded through a resistor R30, and the inverting input end of the second amplifier U5.2 is connected to its output end through a feedback resistor R31. The sampling resistor R27 is used to input a sampling current signal, and the second amplifier U5.2 is used to amplify the voltage difference between the two ends of the sampling resistor R27 to obtain a voltage signal.

[0039] The bias voltage component includes a voltage divider component and a fourth amplifier U5.4. The voltage divider component includes a series-connected variable resistor RP6 and a voltage divider resistor R38. The sliding end of the variable resistor RP6 is connected to the in-phase input end of the fourth amplifier U5.4. The inverting input end of the fourth amplifier U5.4 is connected to its output end. The output end of the fourth amplifier U5.4 is connected to the inverting input end of the negative feedback operational amplifier component. By setting a bias voltage source, the stability of the bias voltage and the offset of temperature changes are achieved, the performance and reliability of the amplifier are improved, and thus the acquisition accuracy is improved. At the same time, by setting the variable resistor RP6, the bias voltage is adaptively adjusted, so that the acquisition module is suitable for current acquisition of more rotating equipment.

[0040] The negative feedback operational amplifier component includes a first amplifier U5.1, the non-inverting input terminal of the first amplifier U5.1 is connected to the output terminal of the acquisition component, the inverting input terminal of the first amplifier U5.1 is connected to the output terminal of the bias voltage component, the non-inverting input terminal of the first amplifier U5.1 is grounded through a resistor R34, and the inverting input terminal of the first amplifier U5.1 and its output terminal are connected through a feedback resistor R35. By setting a negative feedback operational circuit, the working performance of the first amplifier U5.1 is improved, the error is reduced, and the quality of the voltage signal output by the first amplifier U5.1 is improved.

[0041] The common-phase amplifier component includes a third amplifier U5.3, a common-phase input terminal of the third amplifier U5.3 is connected to the output terminal of the negative feedback operational amplifier component, an inverting input terminal of the third amplifier U5.3 is connected to the output terminal of the third amplifier U5.3 through a fixed terminal of a variable resistor RP5, an active terminal of the variable resistor RP5 is connected to one of the fixed terminals, an inverting input terminal of the third amplifier U5.3 and a common terminal of the variable resistor RP5 are grounded through a resistor R37, and the gain of the third amplifier U5.3 is adjusted by setting the variable resistor RP5.

[0042] The current sensor receives a 4-20MA current signal, and the MCU collects the current signal through ADC to obtain the required electrical signal.

[0043] See also Figure 5 This embodiment provides a specific embodiment circuit of a sensor group, including a temperature and humidity sensor, a vibration sensor and a noise sensor.

[0044] See also Figure 6 This embodiment provides a specific embodiment circuit of the wireless transmission module, which is a 485 communication circuit with lightning protection. At the same time, the wireless transmission module of this embodiment also includes a LORA module, which realizes wireless data transmission through LORA, thereby meeting various transmission modes, such as Figure 7 .

[0045] See also Figure 8 In this embodiment, a battery module is also included. The MCU, sensor module, acquisition module, wireless transmission module and storage module are all connected to the battery module. The battery module is used to provide power to the system when the power module fails to work, so that the system can be applied to more scenarios.

[0046] Specifically, the battery module includes a charging management chip U64, a battery BAT, a DCDC component, and a power detection component connected to the battery. The input end of the charging management chip U64 is connected to the external power supply VBUS. The charging management chip is used to charge the battery. The DCDC component is used to convert the battery voltage into a power supply voltage of 5V and 3.3V. The power detection component is connected to the MCU. The power detection component is used to monitor the battery power in real time and feed back to the MCU. The battery module can be connected to an external power supply, which charges the batteries in the battery module. It can also be a replaceable battery, which does not need to be charged online. After disassembly, it can be replaced with a battery with sufficient power.

[0047] Continue reading Figure 1 The host includes a wireless receiving grip, a main controller, a second power module and a data transmission unit. The wireless receiving module, the main controller and the data transmission unit are all connected to the second power module, and the second power module supplies power to them. The wireless receiving module and the data transmission unit are both connected to the main controller; the wireless receiving module is used to receive the equipment data transmitted by the wireless transmission module, the main controller is used to process the equipment data to obtain monitoring data, and the data transmission unit is used to transmit the monitoring data to the cloud platform. A host can monitor several slaves, that is, it can monitor the various working data of several rotating equipment, filter and screen the monitoring data and diagnose equipment abnormalities, and at the same time trigger the back-end same-city OTO platform to report repairs through the location, so as to achieve the nearest accurate matching of electromechanical operation and maintenance and high-speed docking on the same-city O2O platform, improve the operation and maintenance efficiency of building electromechanical equipment, and speed up the property management of smart cities.

[0048] This embodiment also provides a wireless remote fault intelligent judgment device, including the above-mentioned wireless remote fault intelligent judgment system. It also includes a shell, and the MCU, sensor module, acquisition module, wireless transmission module, and power module are arranged in the shell. A magnet is arranged on the shell, and the shell is installed on the equipment through magnetic attraction, so that the slave machine can be disassembled and assembled conveniently and quickly, and there is no need to change the structure and installation method of the existing transmission equipment, so that the construction and use of this system can be completed at a lower cost and workload.

[0049] The above description shows and describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A wireless remote fault intelligent judgment system, characterized in that: Including MCU, sensor module, acquisition module, wireless transmission module, power module; The sensor module, the acquisition module, and the wireless transmission module are all connected to the MCU, and the MCU, the sensor module, the acquisition module, and the wireless transmission module are all connected to the power module; The sensor module is used to collect the working status signal of the equipment; The acquisition module includes an acquisition component, a bias voltage component, a negative feedback operational amplifier component and a common-phase amplifier component. The acquisition component is connected to or close to the current output terminal of the device, and is used to acquire the current signal of the device and output a voltage signal. The output terminal of the acquisition component is connected to the common-phase input terminal of the negative feedback operational amplifier component, the output terminal of the bias voltage component is connected to the inverting input terminal of the negative feedback operational amplifier component, the output terminal of the negative feedback operational amplifier component is connected to the common-phase input terminal of the common-phase amplifier component, the output terminal of the common-phase amplifier component is connected to the MCU, and the output voltage of the bias voltage component is adjustable; The MCU is used to process the working status signal and the electrical signal to obtain the device data, and the wireless transmission module is used to send the device data to the host; It also includes a battery module. The MCU, sensor module, acquisition module, and wireless transmission module are all connected to the battery module. The battery module is used to provide power to the system when the power module fails to work.

2. A wireless remote fault intelligent judgment system according to claim 1, characterized in that: The acquisition component includes a sampling resistor and a second amplifier; the two ends of the sampling resistor are respectively connected to the two input ends of the second amplifier, the in-phase input end of the second amplifier is grounded through a 30th resistor, and the inverting input end of the second amplifier is connected to its output end through a first feedback resistor; The sampling resistor is used to input a sampling current signal, and the second amplifier is used to amplify the voltage difference between the two ends of the sampling resistor to obtain a voltage signal.

3. A wireless remote fault intelligent judgment system according to claim 1, characterized in that: The bias voltage component includes a voltage divider component and a fourth amplifier, the voltage divider component includes a first variable resistor and a voltage divider resistor connected in series, the sliding end of the first variable resistor is connected to the non-inverting input end of the fourth amplifier, the inverting input end of the fourth amplifier is connected to its output end, and the output end of the fourth amplifier is connected to the inverting input end of the negative feedback operational amplifier component.

4. A wireless remote fault intelligent judgment system according to claim 1, characterized in that: The negative feedback operational amplifier component includes a first amplifier, the non-inverting input terminal of the first amplifier is connected to the output terminal of the acquisition component, the inverting input terminal of the first amplifier is connected to the output terminal of the bias voltage component, the non-inverting input terminal of the first amplifier is grounded through a thirty-four resistor, and the inverting input terminal of the first amplifier and its output terminal are connected through a second feedback resistor.

5. The wireless remote fault intelligent judgment system according to claim 1 is characterized in that: The common-phase amplifier component includes a third amplifier, the common-phase input terminal of the third amplifier is connected to the output terminal of the negative feedback operational amplifier component, the inverting input terminal of the third amplifier is connected to the output terminal of the third amplifier through the fixed terminal of the second variable resistor, the active terminal of the second variable resistor is connected to one of the fixed terminals, and the inverting input terminal of the third amplifier and the common terminal of the second variable resistor are grounded through a resistor.

6. A wireless remote fault intelligent judgment system according to claim 1, characterized in that: The battery module includes a charging management chip, a battery, a DCDC component and a power detection component connected in sequence; the input end of the charging management chip is connected to an external power supply, and the charging management chip is used to charge the battery; the DCDC module is used to convert the battery voltage into a power supply voltage, and the power detection component is connected to the MCU, and the power detection component is used to monitor the battery power in real time and feed back to the MCU.

7. The wireless remote fault intelligent judgment system according to claim 1 is characterized in that: It also includes a storage module connected to the MCU and used for storing device data.

8. The wireless remote fault intelligent judgment system according to claim 1 is characterized in that: The host comprises a wireless receiving module, a main controller, a second power supply module and a data transmission unit, wherein the wireless receiving module, the main controller and the data transmission unit are all connected to the second power supply module, and the second power supply module supplies power to the wireless receiving module, the main controller and the data transmission unit are ... second power supply module and the second power supply module are connected to the second power supply module, and the second power supply module and the second power supply module and the second power supply module and the second power supply module and the second power supply module and the second power supply module and the second power supply module and the second power supply module and the The wireless receiving module and the data transmission unit are both connected to the main controller; the wireless receiving module is used to receive the device data transmitted by the wireless transmission module, the main controller is used to process the device data to obtain monitoring data, and the data transmission unit is used to transmit the monitoring data to the cloud platform.

9. A wireless remote fault intelligent judgment device, characterized in that: It comprises a wireless remote fault intelligent judgment system as described in any one of claims 1 to 8.

10. A wireless remote fault intelligent judgment device according to claim 9, characterized in that: It also includes a shell, in which the MCU, sensor module, acquisition module, wireless transmission module, and power module are arranged; a magnet is arranged on the shell, and the shell is installed on the device through magnetic attraction.

Images