Handheld point inspection instrument

Abstract

The utility model discloses a handheld point inspection instrument, and relates to the technical field of fault diagnosis. The handheld point inspection instrument comprises a main controller, a wireless communication assembly and a wired communication assembly, and the wireless communication assembly is electrically connected with the main controller; the wired communication assembly is provided with a communication circuit and a communication line and is electrically connected with the main controller, and the main controller is used for receiving the wireless vibration signal and / or the wireless temperature signal, outputting first vibration data after performing signal processing on the wireless vibration signal, and outputting first temperature data after performing signal processing on the wireless temperature signal; the processor is also used for receiving the wired vibration signal and / or the wired temperature signal, outputting corresponding second vibration data after signal processing of the wired vibration signal, and outputting second temperature data after signal processing of the wired temperature signal. The utility model aims to improve the functional diversity of the handheld point inspection instrument, further improve the accuracy and reliability of fault diagnosis of mechanical equipment, and improve the user experience.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fault diagnosis, especially relates to a handheld point detector. BACKGROUND

[0002] In the field of mechanical equipment fault diagnosis, data acquisition and analysis means are increasingly advanced. Online wired data acquisition devices and wireless data acquisition devices are important tools currently used to monitor the health of mechanical equipment. These devices can continuously collect key parameters such as vibration, temperature, and pressure when the machine is running, and transmit the data to a central system for real-time analysis, so as to timely discover potential problems and predict possible faults. However, the current mechanical equipment fault diagnosis technology still has room for improvement in adaptability and ease of use to meet the instantaneity and interactivity requirements in the field application environment. SUMMARY

[0003] The main purpose of the utility model is to provide a handheld point detector, which aims to improve the functional diversity of the handheld point detector, thereby improving the accuracy and reliability of mechanical equipment fault diagnosis, and enhancing the user experience.

[0004] To achieve the above-mentioned purpose, the utility model provides a handheld point detector, which comprises:

[0005] a main controller;

[0006] a wireless communication component electrically connected to the main controller, the wireless communication component being used for wireless communication connection with a wireless sensor, and being used for collecting wireless vibration signals and / or wireless temperature signals of the wireless sensor and outputting to the main controller;

[0007] a wired communication component having a communication circuit and a communication line, the wired communication component being electrically connected to the main controller, the wired communication component being used for electrical connection with a wired sensor through the communication circuit and the communication line, and being used for collecting wired vibration signals and / or wired temperature signals of the wired sensor and outputting to the main controller;

[0008] the main controller being used for receiving the wireless vibration signals and / or the wireless temperature signals, outputting first vibration data after signal processing of the wireless vibration signals, and outputting first temperature data after signal processing of the wireless temperature signals;

[0009] and being used for receiving the wired vibration signals and / or the wired temperature signals, outputting corresponding second vibration data after signal processing of the wired vibration signals, and outputting second temperature data after signal processing of the wired temperature signals.

[0010] In an embodiment, the wired communication component comprises:

[0011] a sensor interface for accessing a wired vibration signal and / or a wired temperature signal;

[0012] a pre-processing circuit electrically connected with the sensor interface, configured to receive the wired vibration signal and output a pre-processed signal after signal processing on the wired vibration signal;

[0013] a differential amplification circuit electrically connected with an output end of the pre-processing circuit, configured to receive the pre-processed signal and output a differential signal after differential amplification processing on the pre-processed signal;

[0014] an analog-to-digital conversion circuit, an input end of the analog-to-digital conversion circuit being electrically connected with an output end of the differential amplification circuit, an output end of the analog-to-digital conversion circuit being electrically connected with the main controller, configured to receive the differential signal and output a wired vibration processed signal to the main controller after amplification processing on the differential signal;

[0015] a temperature signal conditioning circuit, an input end of the temperature signal conditioning circuit being electrically connected with the sensor interface, an output end of the temperature signal conditioning circuit being electrically connected with the main controller;

[0016] the temperature signal conditioning circuit is configured to receive the wired temperature signal and output a wired temperature processed signal to the main controller after signal processing on the wired temperature signal.

[0017] In an embodiment, the wireless communication assembly comprises a star flash module, the star flash module comprises an SPI interface, and the star flash module is configured to collect a wireless vibration signal and / or a wireless temperature signal and output to the main controller through the SPI interface.

[0018] In an embodiment, the handheld point inspection instrument further comprises:

[0019] a second communication circuit having a communication end for accessing an external terminal;

[0020] the main controller is electrically connected with the second communication circuit, configured to receive a wireless vibration signal and / or a wireless temperature signal output by an external terminal, and output first vibration data after signal processing on the wireless vibration signal and output first temperature data after signal processing on the wireless temperature signal.

[0021] In an embodiment, the handheld point inspection instrument comprises:

[0022] a charging interface for accessing an external power supply voltage;

[0023] an energy storage module configured to output an energy storage voltage;

[0024] A charging management circuit, input ends of the charging management circuit are electrically connected with the charging interface and the output end of the energy storage module respectively, and an output end of the charging management circuit is electrically connected with the main controller;

[0025] The charging management circuit is configured to receive the energy storage voltage, perform voltage conversion on the energy storage voltage, and output a power supply voltage to the main controller after the voltage conversion, so as to supply power to the main controller.

[0026] The charging management circuit is also configured to receive the external power supply voltage, perform voltage conversion on the external power supply voltage, and output a charging voltage to the energy storage module after the voltage conversion, so as to charge the energy storage module.

[0027] In an embodiment, the charging management circuit comprises:

[0028] A charging control chip, the charging control chip is electrically connected with the charging interface and the energy storage module respectively;

[0029] A boost circuit, the boost circuit is electrically connected with a control end of the charging control chip;

[0030] The charging management chip is configured to control the boost circuit to perform boost conversion on the energy storage voltage and output a power supply voltage to the main controller after the boost conversion, so as to supply power to the main controller.

[0031] In an embodiment, the handheld point inspection instrument further comprises:

[0032] A power detection circuit, an input end of the power detection circuit is electrically connected with the energy storage module, and an output end of the power detection circuit is electrically connected with the main controller;

[0033] The power detection circuit is configured to detect the voltage of the energy storage module and output a corresponding voltage detection signal to the main controller.

[0034] In an embodiment, the handheld point inspection instrument further comprises:

[0035] A power-on trigger circuit, the power-on trigger circuit is electrically connected with the main controller and the charging management circuit respectively; the power-on trigger circuit is configured to output a corresponding power-on trigger signal to the main controller and the charging management circuit when triggered by a user.

[0036] A power-off trigger circuit, the power-off trigger circuit is electrically connected with the main controller and the charging management circuit respectively; the power-off trigger circuit is configured to output a corresponding power-off trigger signal to the main controller and the charging management circuit when triggered by a user.

[0037] The charging management circuit is configured to output a power supply voltage to the main controller after voltage conversion of the energy storage voltage when the power-on trigger signal is received, so as to power the main controller.

[0038] The main controller is configured to output a power-on control signal to the charging management circuit when the power-on trigger signal is received, so as to control the charging management circuit to output a power supply voltage to the main controller after voltage conversion of the energy storage voltage; and output a power-off control signal to the charging management circuit when the power-off trigger signal is received, so as to control the charging management circuit to stop outputting the power supply voltage.

[0039] In an embodiment, the handheld point inspection instrument comprises:

[0040] A switch circuit, a controlled end of the switch circuit being electrically connected with the main controller, and an output end of the switch circuit being electrically connected with the charging management circuit;

[0041] The main controller is configured to output a conduction signal to the switch circuit when the power-on trigger signal is received, so as to control the switch circuit to conduct, so that the charging management circuit outputs a power supply voltage to the main controller after voltage conversion of the energy storage voltage;

[0042] and output a turn-off signal to the switch circuit when the power-off trigger signal is received, so as to control the switch circuit to turn off, so that the charging management circuit stops outputting the power supply voltage.

[0043] In an embodiment, the handheld point inspection instrument further comprises:

[0044] A camera assembly, the camera assembly being electrically connected with the main controller, configured to take a picture of a target object, and output a corresponding image to the main controller, so that the main controller outputs a corresponding environmental parameter after signal processing of the image;

[0045] A display assembly, the display assembly being electrically connected with the main controller;

[0046] The main controller is configured to output any one or more of the first vibration data, the second vibration data, the first temperature data, the second temperature data, and the environmental parameter to the display assembly for display.

[0047] The utility model provides a handheld point detector, handheld point detector includes main control unit, wireless communication assembly and wired communication assembly, wireless communication assembly and main control unit electricity is connected for with wireless sensor wireless communication connection, and for gathering wireless vibration signal and / or wireless temperature signal and exports to main control unit, wired communication assembly has communication circuit and communication line, with main control unit electricity is connected, for through communication circuit and communication line and wired sensor electricity is connected, and for gathering wired vibration signal and / or wired temperature signal and exports to main control unit, main control unit is used for receiving wireless vibration signal and / or wireless temperature signal, and exports first vibration data after signal processing to wireless vibration signal, and exports first temperature data after signal processing to wireless temperature signal, still be used for receiving wired vibration signal and / or wired temperature signal, and exports corresponding second vibration data after signal processing to wired vibration signal, and exports second temperature data after signal processing to wired temperature signal.

[0048] In practical application, handheld point detector can receive wireless vibration signal and / or wireless temperature signal that wireless sensor exports through wireless communication assembly, and exports corresponding first vibration data and / or first temperature data after signal processing by main control unit, can also receive wired vibration signal and / or wired temperature signal that wired sensor exports through wired communication assembly, and exports corresponding second vibration data and / or second temperature data after signal processing by main control unit. In this way, handheld point detector can realize wired sensor point detection, and can also support wireless sensor point detection, improve the functional diversity of handheld point detector, and further improve the application range of mechanical equipment fault diagnosis and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the drawings needed to be used in the embodiment or prior art description simple introduction, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to the structure shown in these drawings.

[0050] Figure 1 It is the module schematic view of the embodiment of the utility model handheld point detector,

[0051] Figure 2 It is the module schematic view of another embodiment of the utility model handheld point detector,

[0052] Figure 3 It is the module schematic view of still another embodiment of the utility model handheld point detector,

[0053] Figure 4Module schematic view of still another embodiment of the handheld point detector of the utility model;

[0054] Figure 5 Module schematic view of another embodiment of the handheld point detector of the utility model;

[0055] Figure 6 Module schematic view of still another embodiment of the handheld point detector of the utility model;

[0056] Figure 7 Module schematic view of still another embodiment of the handheld point detector of the utility model;

[0057] Figure 8 Module schematic view of another embodiment of the handheld point detector of the utility model;

[0058] Figure 9 Module schematic view of still another embodiment of the handheld point detector of the utility model;

[0059] Figure 10 Module schematic view of still another embodiment of the handheld point detector of the utility model;

[0060] Figure 11 Module schematic view of another embodiment of the handheld point detector of the utility model;

[0061] Figure 12 Module schematic view of still another embodiment of the handheld point detector of the utility model.

[0062] Explanation of the attached drawing mark:

[0063] 10, main controller;20, wireless communication assembly;30, wired communication assembly;40, second communication circuit;50, charging interface;60, energy storage module;70, charging management circuit;80, electric quantity detection circuit;90, start trigger circuit;100, shutdown trigger circuit;110, camera assembly;120, display assembly;21, star flash module;31, sensor interface;32, preprocessing circuit;33, differential amplification circuit;34, analog-digital conversion circuit;35, temperature signal conditioning circuit;71, charging control chip;72, voltage boosting circuit.

[0064] The utility model realizes the purpose, functional characteristics and advantages, which will be further explained by combining with the embodiments and referring to the attached drawings. Specific implementation

[0065] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0066] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0067] It should be noted that in this paper, step codes such as S100, S200 are used, the purpose is to more clearly and briefly express the corresponding content, and it does not constitute a substantial limitation on the order, and those skilled in the art may perform S200 first and then perform S100 in specific implementation, etc., but these should be within the protection scope of the present application.

[0068] In the field of mechanical equipment fault diagnosis, data acquisition and analysis means are increasingly advanced. Online wired data acquisition devices and wireless data acquisition devices are important tools currently used to monitor the health status of mechanical equipment. These devices can continuously collect key parameters such as vibration, temperature, pressure, etc. when the machine is running, and transmit the data to the central system for real-time analysis, so as to timely discover potential problems and predict possible faults. However, the current mechanical equipment fault diagnosis technology still has room for improvement in adaptability and ease of use to meet the instantaneity and interactivity requirements in the field application environment.

[0069] It can be understood that mechanical equipment fault diagnosis is mainly through online wired data acquisition devices or wireless data acquisition devices. For scenes without online data acquisition devices, mechanical equipment fault diagnosis is mainly realized through handheld point inspection instruments. For wireless data acquisition sensors, most of them analyze data through the background, and it is difficult to debug and point inspection on site. In addition, the existing handheld point inspection instruments mostly use wired vibration sensor mode. For scenes with wireless sensors arranged on site, point inspection is not possible.

[0070] Therefore, the present application provides a handheld point inspection instrument, which refers to Figure 1 The handheld point inspection instrument comprises:

[0071] a main controller 10;

[0072] A wireless communication component 20 is electrically connected to the main controller 10, and is configured to wirelessly communicate with a wireless sensor, and to collect wireless vibration signals and / or wireless temperature signals of the wireless sensor and output to the main controller 10.

[0073] A wired communication component 30 is electrically connected to the main controller 10, and is configured to electrically connect to a wired sensor via a communication circuit and a communication line, and to collect wired vibration signals and / or wired temperature signals of the wired sensor and output to the main controller 10.

[0074] The main controller 10 is configured to receive the wireless vibration signals and / or the wireless temperature signals, and to output first vibration data after signal processing of the wireless vibration signals, and to output first temperature data after signal processing of the wireless temperature signals.

[0075] The main controller 10 is also configured to receive the wired vibration signals and / or the wired temperature signals, and to output corresponding second vibration data after signal processing of the wired vibration signals, and to output second temperature data after signal processing of the wired temperature signals.

[0076] In the embodiment, the main controller 10 can be implemented by an MCU, a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), a PLC, a SOC (System On Chip), etc. Since the STM32MP157 adopts a dual-core Cortex-A7+Cortex-M4 architecture with a main frequency of 650Mhz+209Mhz, the main controller 10 can output acceleration effective value, speed effective value, envelope, axis trajectory, original acceleration waveform and temperature data after calculating and processing the collected vibration and temperature data. Meanwhile, the main controller 10 supports camera, touch display screen and key human-machine interfaces. In the embodiment, the main controller 10 selects a CPU STM32MP157 core board. The vibration and temperature data includes at least one or a combination of multiple ones of the wired vibration signals, the wired temperature signals, the wireless vibration signals and the wireless temperature signals. The main controller 10 is responsible for receiving the vibration and temperature data from the wireless communication component 20 and the wired communication component 30, and outputting the data after signal processing.

[0077] It should be noted that mechanical equipment will produce wear, aging or other forms of damage during operation, and these changes will usually first reflect on the vibration characteristics and temperature changes. By continuously monitoring the vibration level and temperature, abnormal signals can be captured at the early stage of fault development, so that preventive measures can be taken to improve the problem of potential major failure. For example, abnormal vibration may be caused by problems such as imbalance, asymmetry, bearing damage, etc. And overheating is often a sign of increased friction or insufficient lubrication of mechanical parts. Excessive temperature can accelerate the aging of materials or cause other more serious failures. Therefore, the vibration-temperature sensor (integrated with a vibration sensor and a temperature sensor) is a commonly used device in industrial monitoring for simultaneously measuring the vibration condition and temperature change of a mechanical system. Therefore, the wireless sensor can use a wireless vibration-temperature sensor, and the wired sensor can use a wired vibration-temperature sensor.

[0078] When the user uses the handheld point detector to diagnose mechanical faults, the handheld point detector can receive the wireless vibration signal and the wireless temperature signal output by the wireless vibration-temperature sensor through the wireless communication assembly 20 and output to the main controller 10 for signal processing for subsequent analysis. For example, for critical equipment (such as large motors, compressors, etc.), the main controller 10 can receive and store data from the wireless vibration-temperature sensor to facilitate engineers to perform trend analysis. For example, using a preset algorithm to analyze historical vibration data (such as acceleration effective value) and temperature data to identify trends over time. If it is found that the vibration level of a certain bearing position gradually rises or the temperature abnormally rises, it may indicate an impending failure. Based on this information, engineers or on-site personnel can schedule preventive maintenance work in advance to avoid downtime losses caused by sudden failures. Similarly, the wired vibration signal and the wired temperature signal collected by the wired vibration-temperature sensor will be transmitted to the main controller 10, that is, the wired communication assembly 30 completes the vibration-temperature data collection and outputs it to the main controller 10 through the internal communication circuit and the corresponding communication line. The main controller 10 will perform corresponding signal processing on the received wired vibration signal and wired temperature signal, such as filtering, amplification, analog-to-digital conversion, etc. Finally, the second vibration data and the second temperature data are output for subsequent analysis.

[0079] In practical applications, the handheld point detector can not only connect traditional wired vibration and temperature sensors, but also wirelessly communicate with wireless vibration and temperature sensors, expanding its application scenarios. That is, whether it is fixed installation or temporary detection task, the device can be flexibly coped with, improving the convenience of on-site operation. The main controller 10 STM32MP157 can process vibration signals and temperature signals in real time on site, generate key parameters such as acceleration effective value, speed effective value, envelope, and axis trajectory, and provide engineers with intuitive diagnostic basis, so as to capture abnormal signals in the early stage of failure through continuous monitoring of vibration level and temperature change, take preventive measures in time, and prolong the service life of the equipment. In this way, the functional diversity of the handheld point detector is improved, thereby improving the application range of mechanical equipment fault diagnosis and enhancing the user experience.

[0080] In an embodiment, referring to Figure 2 and Figure 11 , the wired communication assembly 30 comprises:

[0081] a sensor interface 31 for accessing wired vibration signals and / or wired temperature signals;

[0082] a preprocessing circuit 32 electrically connected to the sensor interface 31, configured to receive the wired vibration signals, and output preprocessed signals after signal processing on the wired vibration signals;

[0083] a differential amplification circuit 33 electrically connected to the output end of the preprocessing circuit 32, configured to receive the preprocessed signals, and output differential signals after differential amplification processing on the preprocessed signals;

[0084] an analog-to-digital conversion circuit 34, wherein the input end of the analog-to-digital conversion circuit 34 is electrically connected to the output end of the differential amplification circuit 33, and the output end of the analog-to-digital conversion circuit 34 is electrically connected to the main controller 10, configured to receive the differential signals, and output wired vibration processing signals to the main controller 10 after amplification processing on the differential signals;

[0085] a temperature signal conditioning circuit 35, wherein the input end of the temperature signal conditioning circuit 35 is electrically connected to the sensor interface 31, and the output end of the temperature signal conditioning circuit 35 is electrically connected to the main controller 10;

[0086] the temperature signal conditioning circuit 35 is configured to receive the wired temperature signals, and output wired temperature processing signals to the main controller 10 after signal processing on the wired temperature signals.

[0087] In the embodiment, the sensor interface 31 provides a standard interface to access a wired vibration sensor (such as a piezoelectric accelerometer) and a wired temperature sensor (such as a thermal resistance or a thermocouple), or a wired vibration-temperature sensor. For example, an IEPE (Integrated Electronics Piezoelectric) interface is selected to access the wired vibration-temperature sensor, and the wired vibration-temperature sensor outputs the vibration-temperature signal (wired vibration signal and wired temperature signal) to the sensor interface 31 through a three-core connector (including power supply, signal, and ground). The pre-processing circuit 32 can include a high-pass filter, a voltage divider, and a variable gain amplifier. The high-pass filter removes low-frequency noise in the wired vibration signal to avoid unnecessary interference. The voltage divider reduces the input wired vibration signal through a voltage division network to make it suitable for the input range of the differential amplifier. The variable gain amplifier can also be used to adjust the signal strength of the wired vibration signal according to actual needs, and then convert the pre-processed single-ended signal into a differential signal to improve the signal-to-noise ratio and ensure signal quality. Finally, the analog-to-digital conversion circuit 34 receives the differential signal output by the differential amplification circuit 33, converts it into a digital signal (wired vibration processing signal), and transmits it to the main controller 10 for further processing.

[0088] Optionally, the analog-to-digital conversion circuit 34 can use a 24-bit analog-to-digital converter, such as TI ADS127L01, which has a Delta-Sigma architecture, supports a sampling rate of up to 512kSPS, and provides extremely high resolution and stability. It has low total harmonic distortion, low drift, low power consumption, and other performances, and supports standard SPI communication. That is, it communicates with the main controller 10 STM32MP157 core board through the serial peripheral interface (SPI) to ensure fast and stable data transmission. In addition, the temperature signal conditioning circuit 35 can include a voltage dividing circuit, a buffer circuit, and an analog-to-digital conversion circuit 34, etc. for signal conditioning such as voltage division and buffering of the wired temperature signal from the sensor interface 31, and outputting to the main controller 10 after analog-to-digital conversion by the analog-to-digital conversion circuit 34. So that the main controller 10 gets the corresponding temperature value. Among them, the voltage dividing circuit is used to adjust the input voltage level of the wired temperature signal to match the input range of the ADC. The buffer circuit, such as buffer OPA2376, is used to isolate the front-end circuit to prevent load effects from affecting the accuracy of temperature measurement. In the embodiment, the main controller 10 and the analog-to-digital conversion circuit 34 can be integrated in the same chip, for example, directly using the 14-bit ADC of the main controller 10 STM32MP157 to process the wired temperature signal, thereby reducing the number of external components and reducing costs.

[0089] Specifically, the skilled person can use the IEPE interface of the handheld point detector to connect to the wired vibration temperature sensor installed on the device. When the device is running, the wired vibration temperature sensor will continuously generate wired vibration signals and wired temperature signals. The wired vibration signals first enter the handheld point detector through the sensor interface 31, and are processed in turn by the preprocessing circuit 32, the differential amplification circuit 33 and the analog-to-digital conversion circuit 34, and finally converted into digital wired vibration processing signals and sent to the main controller 10 STM32MP157 for data analysis. At the same time, the wired temperature signals are also processed through an independent temperature signal conditioning circuit 35 and output to the main controller 10. In this way, the technician can monitor the status of the device in real time on site and discover potential problems in a timely manner so as to take necessary maintenance measures.

[0090] In practical applications, the above settings not only improve the accuracy and reliability of signal acquisition, but also simplify the overall structure of the handheld point detector and reduce the cost of circuit design.

[0091] In an embodiment, referring to Figure 3 , the wireless communication assembly 20 includes a StarFlash module 21, which includes an SPI interface, and is used to collect wireless vibration signals and / or wireless temperature signals and output them to the main controller 10 through the SPI interface.

[0092] In this embodiment, the StarFlash module 21 is a wireless communication module based on the SLE (StarLight Embedded) protocol, which has ultra-low air interface delay capability, high anti-interference capability, and ultra-low power consumption capability. The StarFlash module 21 supports establishing a stable wireless connection with the wireless vibration temperature sensor and receiving and processing wireless vibration temperature signals (including wireless temperature signals and wireless vibration signals) from the wireless vibration temperature sensor.

[0093] It should be noted that the star flash module 21 adopts Hi3863V100 star flash SOC of HiSilicon. The Hi3863V100 SOC serves as a core processor, supports SLE1.0 protocol, and has strong computing power and low power consumption characteristics. In addition, the star flash module 21 communicates with the main controller 10 STM32MP157 through an SPI interface to ensure the efficiency of signal transmission. The star flash module 21 is used to collect wireless vibration signals and wireless temperature signals from wireless vibration and temperature sensors, and after preliminary processing such as filtering, denoising, and packaging, the signals are transmitted to the main controller 10 through the SPI interface. The processed signals are sent to the main controller 10 in a predetermined format, so that after the main controller 10 STM32MP157 core board processes the data, the output is sent to the corresponding function module of the handheld point detector, such as the display component 120 (touch display screen) to display the time domain waveform, frequency waveform, acceleration effective value, speed effective value, axis trajectory, envelope analysis, and temperature effective value in real time, so that the relevant technical personnel using the handheld point detector can intuitively obtain the detection results of the equipment.

[0094] Specifically, the technician can use the star flash module 21 of the handheld point detector to connect the wireless vibration and temperature sensor. When the equipment is running, the wireless vibration and temperature sensor will continuously generate wireless vibration signals and wireless temperature signals. These signals are first received by the star flash module 21, processed preliminarily, and then transmitted to the main controller 10 STM32MP157 through the SPI interface. The main controller 10 further processes and analyzes the received data, such as calculating the acceleration effective value, speed effective value, and temperature change trend, and displays the results in real time through the touch display screen.

[0095] The setting of the star flash module 21 realizes the point inspection of the equipment in the scene of arranging wireless sensors on site. It improves the functional diversity of the handheld point detector and the accuracy of mechanical fault diagnosis, thereby improving the user experience.

[0096] In another embodiment, referring to Figure 4 , the handheld point detector further comprises:

[0097] The second communication circuit 40 has a communication end for accessing an external terminal;

[0098] The main controller 10 is electrically connected to the second communication circuit 40, configured to receive wireless vibration signals and / or wireless temperature signals output by the external terminal, and output first vibration data after signal processing of the wireless vibration signals, and output first temperature data after signal processing of the wireless temperature signals.

[0099] In this embodiment, the second communication circuit 40 can be implemented by a wired communication module, such as an RS485 communication module, a CAN communication module, or a wireless communication module, for example, a 4G module, a 5G module, a WiFi module, etc. It can be understood that for some third-party wireless sensors using non-standard communication protocols, the data of these sensors can be centrally managed and analyzed through an external terminal (such as a cloud server). That is, in this embodiment, the second communication circuit 40 is implemented by a 4G module, and the handheld point inspection instrument is connected to a third-party cloud server through the built-in 4G module to obtain data from wireless sensors that are not compatible with the protocol, and the data is processed and analyzed by the main controller 10.

[0100] Specifically, the main controller 10 can initiate a request to the third-party cloud server through the 4G module to obtain the data of the specified third-party wireless sensor. The request can be periodic polling or event-triggered. When the main controller 10 receives the data of the specified sensor, it will parse the data and extract sensor information, including but not limited to vibration signals and temperature signals. After the main controller 10 performs preliminary processing on the parsed signals, such as filtering, denoising, and calculating statistical features, the signals can be converted into a format that is easy to understand and use, such as graphical interface display, table form recording, etc., for users to view and analyze.

[0101] For example, a technician can use a handheld point inspection instrument to connect to a third-party cloud server through the built-in 4G module, which hosts data from multiple wireless vibration and temperature sensors using different private or proprietary protocols. When the device is running, these sensors will continuously generate wireless vibration signals and wireless temperature signals, and upload the corresponding data to the cloud server. The handheld point inspection instrument accesses the cloud server through the 4G module to obtain these data, and then the main controller 10 STM32MP157 further processes and analyzes the received data, such as calculating the effective value of acceleration, the effective value of speed, the temperature change trend, etc., and displays the results in real time through the touch display screen.

[0102] In actual application, the setting of the second communication circuit 40 improves the flexibility and efficiency of data acquisition, and also enables the handheld point inspection instrument to serve as a centralized data processing center, integrating data from multiple different sensors, thereby providing technicians with more comprehensive and accurate device status information. Even in the face of incompatible third-party sensors, data can be collected and analyzed, improving the reliability of fault detection work.

[0103] In an embodiment, referring to Figure 5 , the handheld point inspection instrument comprises:

[0104] a charging interface 50 for connecting to an external power supply voltage;

[0105] a storage module 60 configured to output a storage voltage;

[0106] a charging management circuit 70 having input ends electrically connected to the charging interface 50 and the output end of the storage module 60 respectively, and having an output end electrically connected to the main controller 10;

[0107] The charging management circuit 70 is configured to receive the storage voltage, perform voltage conversion on the storage voltage, and output a supply voltage to the main controller 10 to supply power to the main controller 10.

[0108] The charging management circuit 70 is also configured to receive the external power supply voltage, perform voltage conversion on the external power supply voltage, and output a charging voltage to the storage module 60 to charge the storage module 60.

[0109] In this embodiment, the charging interface 50 can adopt a USB interface, such as a USB Type-C or a Micro USB interface. The storage module 60 can be implemented by a lithium ion battery, a nickel-hydrogen battery, or the like. The charging management circuit 70 is responsible for managing the energy transmission between the external power supply voltage accessed through the charging interface 50 and the storage module 60, ensuring that the main controller 10 obtains stable supply voltage and safely charges the storage module 60.

[0110] Optionally, referring to Figure 6 The charging management circuit 70 comprises:

[0111] a charging control chip 71 electrically connected to the charging interface 50 and the storage module 60;

[0112] a boost circuit 72 electrically connected to the control end of the charging control chip 71;

[0113] The charging management chip is configured to control the boost circuit 72 to perform boost conversion on the storage voltage and output a supply voltage to the main controller 10 to supply power to the main controller 10.

[0114] In this embodiment, the charging control chip 71 can be implemented by a charging IC BQ24072, which provides a 1.5A charging current; and the boost circuit 72 can be implemented by a DC-DC TPS61253A.

[0115] Specifically, taking the USB interface as the charging interface 50 and the lithium ion battery as the energy storage module 60 as an example, when an external power supply is available, the handheld point detector can be connected to a power adapter through the USB interface, and the charging management circuit 70 converts the external power supply voltage into a preset charging voltage to charge the lithium ion battery and provide a stable power supply voltage for the main controller 10. For example, the boost circuit 72 boosts the battery voltage to 5V and then outputs it to the core board STM32MP157. If the external power supply is not available during the inspection process, the energy storage module 60 continues to provide power for the main controller 10 through the boost circuit 72 to ensure that the device can work normally.

[0116] Optionally, referring to Figure 7 , the handheld point detector further comprises:

[0117] a power detection circuit 80, an input end of the power detection circuit 80 being electrically connected with the energy storage module 60, and an output end of the power detection circuit 80 being electrically connected with the main controller 10;

[0118] The power detection circuit 80 is configured to detect the voltage of the energy storage module 60 and output a corresponding voltage detection signal to the main controller 10.

[0119] In this embodiment, the power detection circuit 80 can be implemented by using a coulomb meter (such as STC3115), a voltage dividing circuit, a special power monitoring chip, etc.

[0120] When the handheld point detector is running, the power detection circuit 80 monitors the voltage of the energy storage module 60 in real time and transmits the voltage detection signal to the main controller 10 STM32MP157. The main controller 10 can output the received voltage detection signal to the display component 120 after processing, so that the user can intuitively understand the current power situation through the display component 120, and ensure that the device can work normally at critical moments due to insufficient power.

[0121] Through the above setting, not only the portability and endurance of the handheld point detector are improved, but also it is ensured that the data acquisition and analysis tasks can be continuously performed even in the absence of an external power supply, thereby ensuring the reliability of the device state monitoring and fault diagnosis work. In addition, not only the accuracy and reliability of the power monitoring are improved, but also a clear power indication is provided for the user, thereby enhancing the user experience and the practicality of the device.

[0122] In an embodiment, referring to Figure 8 and Figure 12 , the handheld point detector further comprises:

[0123] The start-up trigger circuit 90 is electrically connected with the main controller 10 and the charging management circuit 70 respectively, and is configured to output a corresponding start-up trigger signal to the main controller 10 and the charging management circuit 70 when triggered by a user.

[0124] The shutdown trigger circuit 100 is electrically connected with the main controller 10 and the charging management circuit 70 respectively, and is configured to output a corresponding shutdown trigger signal to the main controller 10 and the charging management circuit 70 when triggered by a user.

[0125] The charging management circuit 70 is configured to output a power supply voltage to the main controller 10 after voltage conversion of the energy storage voltage when the start-up trigger signal is received.

[0126] The main controller 10 is configured to output a power-on control signal to the charging management circuit 70 to control the charging management circuit 70 to output a power supply voltage to the main controller 10 after voltage conversion of the energy storage voltage when the start-up trigger signal is received, and output a power-off control signal to the charging management circuit 70 to control the charging management circuit 70 to stop outputting the power supply voltage when the shutdown trigger signal is received.

[0127] The handheld inspection instrument comprises:

[0128] The switch circuit is electrically connected with the main controller 10 at a controlled end, and is electrically connected with the charging management circuit 70 at an output end.

[0129] The main controller 10 is configured to output a conduction signal to the switch circuit to control the switch circuit to conduct when the start-up trigger circuit 90 is received, so that the charging management circuit 70 outputs a power supply voltage to the main controller 10 after voltage conversion of the energy storage voltage.

[0130] And output a shutdown signal to the switch circuit to control the switch circuit to shut down when the shutdown trigger signal is received, so that the charging management circuit 70 stops outputting the power supply voltage.

[0131] In the embodiment, the start-up trigger circuit 90 and the shutdown trigger circuit 100 can be implemented by virtual buttons or physical buttons, and the switch circuit can be implemented by a switching tube such as a triode or a MOS tube, or a switching device such as a relay or a contactor.

[0132] Specifically, the power-on trigger circuit 90 and the power-off trigger circuit 100 can be integrated into one physical button (such as the POWER button), and the power-on and power-off operations of the user are distinguished by different pressing modes (short press / long press). For example, when the user short presses the POWER button, the power-on trigger circuit 90 is triggered, and outputs a power-on trigger signal (high-level signal) to the main controller 10 and the charging management circuit 70. When the user long presses the POWER button for more than a certain time (for example, 3 seconds), the power-off trigger circuit 100 is triggered, and outputs a power-off trigger signal (low-level signal) to the main controller 10 and the charging management circuit 70. The main controller 10 outputs a power-on control signal to the charging management circuit 70 when receiving the power-on trigger signal, so as to control the charging management circuit 70 to output the supply voltage converted from the energy storage voltage to the main controller 10, so as to power the main controller 10. Similarly, the main controller 10 outputs a power-off control signal to the charging management circuit 70 when receiving the power-off trigger signal, so as to control the charging management circuit 70 to stop outputting the supply voltage. The switching circuit is controlled by the main controller 10, and is used to control the charging management circuit 70 to start / stopping powering the energy storage module 60 when receiving the power-on trigger signal or the power-off trigger signal. Taking a triode as an example of the switching circuit, when the main controller 10 receives the power-on trigger signal and outputs a corresponding conduction signal, the triode is turned on, allowing the charging management circuit 70 to output the supply voltage converted from the energy storage voltage to the main controller 10. When the main controller 10 receives the power-off trigger signal and outputs a corresponding turn-off signal, the triode is turned off, and the charging management circuit 70 stops outputting the supply voltage. In this way, the charging management circuit 70 adjusts its working state according to the received power-on or power-off trigger signal, so as to ensure that the main controller 10 obtains the corresponding supply voltage.

[0133] In combination with the above embodiment, the handheld point detector boosts the battery voltage to 5V by the DC-DC TPS61253A to power the core board STM32MP157, and charges the battery through the USB interface. The charging IC uses TI BQ24072 and provides a charging current of 1.5A. It should be noted that the charging IC provides a power enable control pin. When the power-on / off button POWER button is pressed, the power enable control pin inputs a low level to enable the system power supply. The STM32MP157 detects that the POWER button is pressed through the input GPIO pin, and controls the triode to keep the power enable pin at a low level through the output GPIO pin. When the POWER button is pressed again, the input GPIO pin detects that the POWER button is pressed, and the output GPIO controls the triode to output a high level, pulling up the power enable pin, and turning off the power supply. The handheld point detector enters a standby or completely closed state.

[0134] By integrating the power-on trigger circuit 90 and the power-off trigger circuit 100 into a single physical button (such as the POWER button), the user can start and stop the power supply of the device through two simple operations of short pressing and long pressing, or through the frequency of pressing, etc., thereby simplifying the operation process of the user and reducing the possibility of misoperation. In addition, the power enable control pin in the charging management circuit 70 ensures that the power supply is turned on or off only under the explicit operation of the user, thereby avoiding the situation of accidental power failure or continuous power consumption.

[0135] In another embodiment, referring to Figure 9 , the handheld point inspection instrument further comprises:

[0136] a camera assembly 110 electrically connected with the main controller 10, configured to take a picture of a target object and output a corresponding image to the main controller 10, so that the main controller 10 outputs a corresponding environmental parameter after signal processing of the image;

[0137] a display assembly 120 electrically connected with the main controller 10;

[0138] The main controller 10 is configured to output any one or more of the first vibration data, the second vibration data, the first temperature data, the second temperature data, and the environmental parameter to the display assembly 120 for display.

[0139] In this embodiment, the camera assembly 110 can be implemented by using a CMOS camera module or an embedded camera module, and the display assembly 120 can be implemented by using an LED screen or an LCD screen.

[0140] Specifically, the camera assembly 110 is used to take pictures of target objects (such as mechanical equipment, detection areas, etc.) and output the collected images to the main controller 10. Optionally, the camera assembly 110 can take photos of the surface or internal structure of the equipment, helping technicians to visually identify potential problems such as cracks, corrosion, wear and tear, etc. Optionally, the camera assembly 110 can be used to capture information about the surrounding environment, such as lighting conditions, temperature changes, etc., and extract environmental parameters (such as brightness, color distribution, etc.) in combination with image analysis algorithms. The environmental parameters can also be stored for subsequent review and comparative analysis. In addition, the display assembly 120 is responsible for displaying various data processed by the main controller 10, including vibration data, temperature data, environmental parameters, etc., to provide an intuitive information display for users. In this embodiment, the display assembly 120 can use a touch display screen, which has high resolution and good color rendering. Users can set up adjustments, view historical records, switch between different views, etc. through the touch display screen, improving the human-machine interaction experience. In addition, the main controller 10 can also generate a graphical interface on the touch display screen to support various visualization forms such as charts and waveforms, making it easier to understand and analyze complex data. For example, Figure 10 as shown in Figure 10 The block diagram of the fault diagnosis system of the handheld point inspection instrument is shown in FIG. 10. The main controller 10 can store temperature data, vibration data, environmental parameters, etc. to an SD card for subsequent retrieval and use.

[0141] It should be noted that the software part of the handheld point inspection instrument uses the OpenSTLinux system, and the GUI functions include user login, system settings, vibration detection, temperature detection, data browsing, and photographing. GUI (Graphical User Interface) is an interface that allows users to interact with computers through graphical elements such as windows, menus, buttons, etc. It provides an intuitive way of operation, making it easier for users to use software functions. The hardware layer includes Corex-A7 and Corex-M4. The kernel space includes OpenSTLinux BSP (Board Support Package) and BOOTCHAIN. The user space includes OP-TEE and linux. Users can perform identity verification through the touch display screen to ensure that only authorized personnel can access the device. For example, by entering a username and password for authentication to complete login. Users can also perform system settings to configure system parameters such as network settings, date and time, language, etc. In addition, the first vibration data and the second vibration data corresponding to the vibration signal, and the first temperature data and the second temperature data corresponding to the temperature signal can be displayed in chart form on the screen. Users can also browse vibration data, temperature data, and photos in the historical records through the GUI interface.

[0142] In practical applications, when a user needs to check a device, the camera assembly 110 on the handheld point inspection instrument can be used to take pictures of key parts of the device (such as bearings, gears, etc.), and the images are transmitted to the main controller 10. The main controller 10 processes the received images, extracts environmental parameters (such as light intensity, color distribution, etc.), and combines them with vibration and temperature data to generate a comprehensive device health report. Finally, this information is displayed to the user in an intuitive way through the touch display, helping relevant technical personnel to make accurate judgments quickly. In this way, the efficiency and accuracy of fault diagnosis are improved. In addition, the graphical interface enhances the user experience.

[0143] The above is only an optional embodiment of the present application, and does not limit the patent range of the present application, and any equivalent mechanism transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A hand-held point tester characterized by, The handheld point detector comprises: a main controller; a wireless communication assembly electrically connected with the main controller, the wireless communication assembly being configured to wirelessly communicate with a wireless sensor, and to collect wireless vibration signals and / or wireless temperature signals of the wireless sensor and output the signals to the main controller; a wired communication assembly having a communication circuit and a communication line, the wired communication assembly being electrically connected with the main controller, and being configured to electrically connect with a wired sensor via the communication circuit and the communication line, and to collect wired vibration signals and / or wired temperature signals of the wired sensor and output the signals to the main controller; the main controller being configured to receive the wireless vibration signals and / or the wireless temperature signals, to output first vibration data after signal processing of the wireless vibration signals, and to output first temperature data after signal processing of the wireless temperature signals; and to receive the wired vibration signals and / or the wired temperature signals, to output corresponding second vibration data after signal processing of the wired vibration signals, and to output second temperature data after signal processing of the wired temperature signals.

2. The handheld point tester of claim 1, wherein, The wired communication assembly comprises: a sensor interface configured to access wired vibration signals and / or wired temperature signals; a preprocessing circuit electrically connected with the sensor interface, configured to receive the wired vibration signals, and to output preprocessed signals after signal processing of the wired vibration signals; a differential amplification circuit electrically connected with an output end of the preprocessing circuit, configured to receive the preprocessed signals, and to output differential signals after differential amplification processing of the preprocessed signals; an analog-to-digital conversion circuit, an input end of the analog-to-digital conversion circuit being electrically connected with an output end of the differential amplification circuit, and an output end of the analog-to-digital conversion circuit being electrically connected with the main controller, the analog-to-digital conversion circuit being configured to receive the differential signals, and to output wired vibration processed signals to the main controller after amplification processing of the differential signals; a temperature signal conditioning circuit, an input end of the temperature signal conditioning circuit being electrically connected with the sensor interface, and an output end of the temperature signal conditioning circuit being electrically connected with the main controller; the temperature signal conditioning circuit being configured to receive the wired temperature signals, and to output wired temperature processed signals to the main controller after signal processing of the wired temperature signals.

3. The handheld point tester of claim 1, wherein, The wireless communication assembly comprises a star flash module, the star flash module comprising an SPI interface, the star flash module being configured to collect wireless vibration signals and / or wireless temperature signals and output the signals to the main controller via the SPI interface.

4. The handheld point tester of claim 1, wherein, The handheld point detector further comprises: a second communication circuit having a communication end configured to access an external terminal; the main controller being electrically connected with the second communication circuit, and being configured to receive wireless vibration signals and / or wireless temperature signals output by the external terminal, to output first vibration data after signal processing of the wireless vibration signals, and to output first temperature data after signal processing of the wireless temperature signals.

5. The handheld point tester of claim 1, wherein, The handheld point detector comprises: a charging interface configured to access an external power supply voltage; an energy storage module configured to output an energy storage voltage; A charging management circuit, input ends of the charging management circuit are electrically connected with the charging interface and the output end of the energy storage module respectively, and an output end of the charging management circuit is electrically connected with the main controller; The charging management circuit is used for receiving the energy storage voltage, performing voltage conversion on the energy storage voltage, and outputting a power supply voltage to the main controller, so as to supply power to the main controller. It is also used for receiving the external power supply voltage, performing voltage conversion on the external power supply voltage, and outputting a charging voltage to the energy storage module, so as to charge the energy storage module.

6. The handheld point tester of claim 5, wherein, The charging management circuit comprises: A charging control chip, the charging control chip is electrically connected with the charging interface and the energy storage module respectively; A boost circuit, which is electrically connected with a control end of the charging control chip; The charging control chip is used for controlling the boost circuit to perform voltage conversion on the energy storage voltage and output a power supply voltage to the main controller, so as to supply power to the main controller.

7. The handheld point tester of claim 5, wherein, The handheld point detector further comprises: An electric quantity detection circuit, an input end of the electric quantity detection circuit is electrically connected with the energy storage module, and an output end of the electric quantity detection circuit is electrically connected with the main controller; The electric quantity detection circuit is used for detecting the voltage of the energy storage module and outputting a corresponding voltage detection signal to the main controller.

8. The handheld point tester of claim 5, wherein, The handheld point detector further comprises: A power-on trigger circuit, the power-on trigger circuit is electrically connected with the main controller and the charging management circuit respectively; the power-on trigger circuit is used for outputting a corresponding power-on trigger signal to the main controller and the charging management circuit when being triggered by a user; A power-off trigger circuit, the power-off trigger circuit is electrically connected with the main controller and the charging management circuit respectively; the power-off trigger circuit is used for outputting a corresponding power-off trigger signal to the main controller and the charging management circuit when being triggered by a user; The charging management circuit is used for performing voltage conversion on the energy storage voltage and outputting a power supply voltage to the main controller when receiving the power-on trigger signal, so as to supply power to the main controller; The main controller is used for outputting a power-on control signal to the charging management circuit when receiving the power-on trigger signal, so as to control the charging management circuit to perform voltage conversion on the energy storage voltage and output a power supply voltage to the main controller; and outputting a power-off control signal to the charging management circuit when receiving the power-off trigger signal, so as to control the charging management circuit to stop outputting the power supply voltage.

9. The handheld point tester of claim 8, wherein, The handheld point detector comprises: A switch circuit, a controlled end of the switch circuit is electrically connected with the main controller, and an output end of the switch circuit is electrically connected with the charging management circuit; The main controller is used for outputting a conduction signal to the switch circuit when receiving the power-on trigger circuit, so as to control the switch circuit to be turned on, so that the charging management circuit performs voltage conversion on the energy storage voltage and outputs a power supply voltage to the main controller; And outputting an off signal to the switch circuit when receiving the power-off trigger signal, so as to control the switch circuit to be turned off, so that the charging management circuit stops outputting the power supply voltage.

10. The handheld point tester of any one of claims 1 to 9, wherein, The handheld point detector further comprises: a camera assembly electrically connected with the main controller, configured to capture a target object and output a corresponding image to the main controller, so that the main controller outputs a corresponding environmental parameter after signal processing of the image; a display assembly electrically connected with the main controller; the main controller is configured to output any one or more of the first vibration data, the second vibration data, the first temperature data, the second temperature data and the environmental parameter to the display assembly for display.

Images