CN220191053U - Compressor data acquisition terminal - Google Patents
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Abstract
The utility model relates to the technical field of compressors, in particular to a compressor data acquisition terminal. Comprising the following steps: the compressor data acquisition terminal comprises a protective shell, a power supply module, a pressure acquisition module, a temperature acquisition module, an RS485 module, a wireless communication module, a storage module and a main control chip, wherein the power supply module is used for supplying power to power utilization components inside the protective shell of the compressor data acquisition terminal through electric energy provided by an external power supply arranged outside the protective shell; the pressure acquisition module is used for acquiring the pressure of the compressor and transmitting pressure detection information of the compressor to the main control chip; the temperature acquisition module is used for detecting the temperature of the compressor and sending temperature detection data of the compressor to the main control chip; and the RS485 module is used for enabling the terminal to be connected with a plurality of RS485 devices outside the terminal so as to establish communication with each connected RS485 sensor. The utility model realizes more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit.
Description
Technical Field
The utility model relates to the technical field of compressor data acquisition, in particular to a compressor data acquisition terminal.
Background
With the increasing number of large public buildings, building energy consumption is increased, and for the air conditioning system of the energy consumption large household in the intelligent building, the compressor is in a core position, however, due to the fact that the compressor is in a fault state due to factors such as improper operation and some sudden faults of equipment, supervision operation and maintenance personnel cannot find and solve the problems in time, a series of losses are caused, and therefore the compressor detection method is particularly important for the detection of the compressor. At present, a compressor data acquisition system depends on a local construction monitoring center, and workers are required to watch day and night, so that the monitoring requirement can be met to a certain extent, but the problems of high personnel cost, poor data traceability, poor analyzability, single data monitoring mode and the like exist, and the current production requirement of rapid development cannot be met. For this reason, I have developed this TH-400G-TPM compressor data acquisition terminal.
The compressor data acquisition terminal is a comprehensive novel instrument integrating high-tech application technologies such as internet technology, sensor technology, embedded technology, data acquisition and storage technology and the like, real-time data of equipment can be maximally supported by the equipment through an embedded controller and a sensor to collect real-time data of the equipment, 12 paths of PT100 temperature data acquisition and 10 paths of pressure data acquisition can be maximally supported by the equipment, the equipment adopts a standard Modbus-RTU communication mode, the compressor unit of all standard Modbus-RTU protocols in the market is matched, and a user can configure RS485 measuring point acquisition parameters through a remote monitoring cloud platform which is developed by I department in a matched mode, so that the operation information of the compressor unit is acquired. Meanwhile, the device realizes transparent transmission of data through a 4G wireless network communication technology, so that real-time synchronous monitoring of the on-site compressor unit data is realized. The method has the advantages of wide network coverage, flexible and quick networking, low running cost and the like.
Chinese patent publication No.: CN209908736U discloses an air compressor internet of things monitoring system, which comprises an air compressor control end, a server platform and a remote monitoring terminal; the control end of the air compressor is connected with a server platform, and the server platform is connected with the remote monitoring terminal; the air compressor control end comprises a control main board, a data acquisition module, a communication module, a touch screen and a control object; the control object comprises an alarm module, an air switch, an intermediate relay and an alternating current contactor; the data acquisition module is used for acquiring operation data of the air compressor; the communication module is used for realizing connection between the control main board and the server platform; the data acquisition module comprises: temperature sensor, pressure sensor, current transformer. Therefore, the air compressor internet of things monitoring system has the following problems: the problems of non-traceability, poor analyzability, single data monitoring mode and the like of the data can not meet the current production requirements of rapid development.
Disclosure of Invention
Therefore, the utility model provides a compressor data acquisition terminal which is used for solving the problems of non-traceability, poor analyzability, single data monitoring mode and the like of data in the prior art, and cannot meet the current production demand of rapid development.
In order to achieve the above object, the present utility model provides a compressor data acquisition terminal, comprising: a protective housing; the power module is arranged in the protective shell and is connected with a power line which is led out from an external power supply in the peripheral module, and is used for supplying power to an electric component in the protective shell of the compressor data acquisition terminal through electric energy provided by the external power supply arranged outside the protective shell; the pressure acquisition module is connected with the power supply module and a main control chip arranged in the protective shell and used for acquiring the pressure of the compressor and transmitting pressure detection information of the compressor to the main control chip; the temperature acquisition module is respectively connected with the pressure acquisition module and the main control chip and is used for detecting the temperature of the compressor and sending temperature detection data of the compressor to the main control chip; the RS485 module is respectively connected with the temperature acquisition module and the main control chip and is used for enabling the terminal to be connected with a plurality of RS485 devices outside the terminal so as to establish communication with each connected RS485 type sensor; the wireless communication module is respectively connected with the power supply module and the main control chip and is used for carrying out wireless data communication with the private cloud platform and the server platform through a 4G network; the storage module is connected with the main control chip and is used for selecting a corresponding capacity SD card to store the acquired data when the use scenes with different storage capacity requirements are used; the main control chip is respectively connected with the power supply module, the pressure acquisition module, the temperature acquisition module, the RS485 module, the wireless communication module and is used for acquiring data output by each module through master-slave communication and carrying out character superposition processing on the data; the MCU main control chip is internally provided with a watchdog circuit subjected to antistatic treatment and a plurality of communication protocols.
Further, the main control chip includes:
the RS485 two-wire system interface is used for communicating with the RS485 module;
the 4G communication interface is used for enabling the main control chip to be in communication connection with the wireless communication module;
the analog input interface is used for enabling temperature data and pressure data detected by a temperature sensor and a pressure sensor arranged on an external component to be transmitted to the main control chip through the temperature acquisition module and the pressure acquisition module;
the DC interface is used for enabling the power supply module to supply power to the main control chip;
the hardware watchdog circuit is used for automatically resetting the internal program in the running process of the main control chip under the condition that the internal program runs or is deadlocked.
Further, the main control chip is STM32 main control chip, and the built-in communication protocol of the main control chip comprises a standard MODBUS-RTU communication protocol, a TCP/IP communication protocol, a serial port communication protocol, an SPI communication protocol and a custom transmission protocol.
Further, the main control chip acquires temperature detection data and pressure detection data of the temperature sensor and the pressure sensor in a master-slave mode, integrates, processes and analyzes each data when acquiring each data, and transmits the data to the server platform in a wireless transmission mode through the 4G network.
Further, the temperature acquisition module is a multi-path high-resolution temperature acquisition circuit, comprising:
the analog multiplexer is arranged in the temperature acquisition circuit and used for completing multichannel temperature data acquisition, and the on-resistance of the analog multiplexer is relatively constant in the whole input signal range;
the conversion detector is connected with the temperature sensor and is used for optimizing platinum resistance of temperature data detected by the temperature sensor;
and the high-precision analog-to-digital converter is connected with the conversion detector and is used for converting the ratio of the platinum resistance of the temperature sensor to the reference resistance value into digital output so as to perform high-resolution acquisition on the temperature of the compressor unit.
Further, the wireless communication module is a 4G network transparent transmission circuit, and the 4G network transparent transmission circuit supports protocols such as socket distribution, FTP self-updating, FTP He updating and the like.
Further, the functions of the 4G network transparent transmission circuit when the 4G network is in wireless data communication with the private terminal platform and the server platform respectively comprise a serial data caching function, heartbeat packet sending, automatic reconnection of broken lines and permanent online.
Further, the private cloud platform carries out remote configuration and modification on the operation parameter information of the compressor unit through the corresponding sensing information of the compressor unit acquired by the compressor data acquisition terminal, and remotely synchronizes the configuration and modified information to the compressor data acquisition terminal after the configuration and modification on the compressor unit are completed.
Further, the peripheral module includes:
the power line is arranged between the external power supply and the power module and used for transmitting the electric energy of the corresponding rated voltage of the external power supply to the power module;
the first signal wire is arranged between the pressure acquisition module and the pressure sensor arranged on the compressor unit and used for transmitting control signals of the pressure sensor and pressure signals of the compressor unit acquired by the pressure sensor;
the second signal wire is arranged between the temperature acquisition module and a temperature sensor arranged on the compressor unit and used for transmitting control signals of the temperature sensor and temperature signals of the compressor unit acquired by the temperature sensor;
and 485 lines, which are arranged between the RS485 module and the compressor unit and used for transmitting control signals to the compressor unit and electric signals of the compressor unit.
Further, the parameters of the private cloud platform for configuring the temperature sensor include: the parameters for configuring the pressure sensor by the private cloud platform comprise the following parameters: a pressure calibration coefficient and a pressure acquisition frequency; parameters of the private cloud platform for configuring the compressor unit include: RS485 grouping measuring points and RS485 hardware serial port parameters.
Compared with the prior art, the intelligent control system has the beneficial effects that the power supply module, the pressure acquisition module, the temperature acquisition module, the RS485 module, the wireless communication module, the storage module and the main control chip are arranged, wherein the pressure acquisition module, the temperature acquisition module and the RS485 module are respectively used for acquiring and processing pressure data of the compressor unit, acquiring and processing temperature data of the compressor unit and acquiring and processing electric signals of the compressor unit, so that the monitoring capability of the compressor unit is enhanced, meanwhile, the mode of combining the data acquisition terminal with the cloud platform is adopted in the scheme, the flexibility and the operability of configuration of operation parameters of the compressor unit by a user are improved, the functions of data acquisition and remote control are added when the temperature sensor and the pressure sensor acquire the data of the compressor unit, and the like on the cloud platform are realized, so that the monitoring capability of the state of the compressor unit and the adjusting capability of the data acquisition are improved, and the operation efficiency of the compressor unit are improved; according to the method, the cloud real-time and historical data display and analysis functions are further increased, the storage data of the sd card is imported, the collected data are displayed more widely, the intelligent level of data collection state monitoring is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are achieved.
Furthermore, the utility model sets the RS485 two-wire system interface, the 4G communication interface, the analog input interface, the DC interface and the hardware watchdog circuit in the main control chip, inputs the temperature acquisition data and the pressure acquisition data into the main control chip through the analog input interface so as to enable the main control chip to analyze and calculate the acquired data, and automatically resets the internal program to protect the safety of the main control chip when the internal program runs or is deadlocked through the set hardware watchdog circuit, thereby improving the processing capacity and the operation stability of the main control chip, further improving the operation stability of the state monitoring system of the compressor unit and further realizing more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit.
Furthermore, the communication protocols including the standard MODBUS-RTU communication protocol, the TCP/IP communication protocol, the serial port communication protocol, the SPI communication protocol, the custom transmission protocol and the like are built in the main control chip, so that the smoothness of information transmission of the main control chip is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
Furthermore, the master-slave data acquisition mode is arranged in the master control chip, so that the accuracy and the comprehensive timeliness of data acquisition are realized, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
Furthermore, the utility model improves the stability of the on-resistance and realizes the low on-resistance, the low off leakage current and the internal address decoding through arranging the analog multiplexer, the conversion detector and the high-precision analog-digital converter in the temperature acquisition module, and improves the precision of the temperature acquisition through arranging the high-precision analog-digital converter, thereby further realizing the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit.
Further, through the wireless communication module, protocols such as socket distribution, FTP self-updating and FTP other updating are supported, and the network transmission capacity of the wireless communication module is improved, so that the speed of information transmission is improved, the quick control and state uploading of the compressor unit are realized, and the more comprehensive, accurate and quick state monitoring and operation control of the compressor unit are further realized.
Furthermore, the utility model ensures that the cache data is not lost when the connection is abnormal by arranging the serial data cache function, the heartbeat packet sending function, the automatic reconnection of broken lines, the permanent online function and the like in the 4G network transparent transmission circuit, realizes the stable improvement of the connection between the data acquisition terminal and the cloud platform, and further realizes the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit.
Further, the remote configuration and modification of the operation parameter information of the compressor unit can be realized through the wireless transmission module and the private cloud platform, and the configuration and modification information is synchronized to the compressor data acquisition terminal, so that the data updating speed of the compressor data acquisition terminal is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
Further, the power line, the first signal line, the second signal line and the 485 line are arranged in the peripheral module, electric energy in an external power supply is transmitted to the data acquisition terminal through the power line, stable supply of the electric energy is achieved, collected temperature data and pressure data are transmitted to the data acquisition terminal through the arranged first signal line and the second signal line, rapid transmission of the data is achieved, and more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further achieved.
Furthermore, the configuration parameters of the temperature sensor, the pressure sensor and the compressor unit are set on the private cloud platform, and the parameters of the equipment are configured, so that the data acquisition capacity and the adjustment capacity of the compressor unit are improved, the scientificity and the rationality of data acquisition are improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
Drawings
FIG. 1 is a functional block diagram of a compressor data acquisition terminal according to an embodiment of the present utility model;
FIG. 2 is a circuit diagram of a multi-channel high resolution temperature acquisition circuit for a compressor data acquisition terminal according to an embodiment of the present utility model;
FIG. 3 is a circuit diagram of a high precision pressure acquisition circuit of a compressor data acquisition terminal according to an embodiment of the present utility model;
FIG. 4 is a circuit diagram of an RS485 acquisition circuit of a compressor data acquisition terminal according to an embodiment of the utility model;
FIG. 5 is a circuit diagram of a 4G network transparent transmission circuit of a compressor data acquisition terminal according to an embodiment of the present utility model;
FIG. 6 is a circuit diagram of a localized large capacity SD card memory circuit of a compressor data acquisition terminal according to an embodiment of the present utility model;
fig. 7 is a circuit diagram of a high reliability ac-dc conversion circuit of a compressor data acquisition terminal according to an embodiment of the present utility model.
Detailed Description
In order that the objects and advantages of the utility model will become more apparent, the utility model will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, which are respectively a functional block diagram of a compressor data acquisition terminal, a multi-path high-resolution temperature acquisition circuit diagram, a circuit diagram of a high-precision pressure acquisition circuit, a circuit diagram of an RS485 acquisition circuit, a circuit diagram of a 4G network transmission circuit, a circuit diagram of a localized large-capacity SD card storage circuit, and a circuit diagram of a high-reliability ac/dc conversion circuit, an embodiment of the utility model of a compressor data acquisition terminal includes:
a protective housing;
the power module is arranged in the protective shell and is connected with a power line which is led out from an external power supply in the peripheral module, and is used for supplying power to an electric component in the protective shell of the compressor data acquisition terminal through electric energy provided by the external power supply arranged outside the protective shell;
the pressure acquisition module is connected with the power supply module and a main control chip arranged in the protective shell and used for acquiring the pressure of the compressor and transmitting pressure detection information of the compressor to the main control chip;
the temperature acquisition module is respectively connected with the pressure acquisition module and the main control chip and is used for detecting the temperature of the compressor and sending temperature detection data of the compressor to the main control chip;
the RS485 module is respectively connected with the temperature acquisition module and the main control chip and is used for enabling the terminal to be connected with a plurality of RS485 devices outside the terminal so as to establish communication with each connected RS485 type sensor;
the wireless communication module is respectively connected with the power supply module and the main control chip and is used for carrying out wireless data communication with the private cloud platform and the server platform through a 4G network;
the storage module is connected with the main control chip and is used for selecting a corresponding capacity SD card to store the acquired data when the use scenes with different storage capacity requirements are used;
the main control chip is respectively connected with the power supply module, the pressure acquisition module, the temperature acquisition module, the RS485 module, the wireless communication module and is used for acquiring data output by each module through master-slave communication and carrying out character superposition processing on the data; the MCU main control chip is internally provided with a watchdog circuit subjected to antistatic treatment and a plurality of communication protocols.
With continued reference to fig. 3, the pressure acquisition module is a high-precision pressure acquisition circuit, and the terminal adopts an operational amplifier with a chopper stabilization technology to provide low offset voltage in the process of designing the high-precision pressure acquisition circuit, so that the temperature drift of the whole circuit is not only close to zero but also has the characteristic of low input bias current, and an excellent common-mode rejection ratio can be provided, therefore, compared with the traditional complementary input type frequency divider and circuit, the differential linearity can be effectively improved in the aspect of analog-to-digital conversion, and the precision of the acquisition process is further improved.
With continued reference to fig. 4, the pressure acquisition module is an isolated RS485 acquisition circuit, and compared with a common RS485 acquisition circuit, the isolated RS485 acquisition circuit designed by the terminal has the characteristics of high reliability, high isolation voltage resistance, high common mode immunity and high integration level, so that signal reflection caused by EMI radiation and mismatching of the tail ends can be effectively reduced, and an ultra-large output voltage swing can be provided, thereby ensuring higher noise margin and greatly improving the reliability and stability of the system.
With continued reference to fig. 6, the storage module includes a localized large-capacity SD card storage circuit, and the terminal can perform local storage on the collected data through the SD card to facilitate later data tracing.
With continued reference to fig. 7, the power module includes a high-reliability ac/dc conversion circuit, and compared with a common ac/dc conversion circuit, the terminal is designed with a high-reliability ac/dc conversion circuit, which has the characteristics of high conversion efficiency, low power consumption, small volume, wide input voltage range, safe isolation and low ripple output, and has the outstanding characteristics of ac/dc dual-purpose, overload protection, short-circuit protection, overheat protection, and the like, so that the stable operation of the system can be effectively ensured.
According to the utility model, the power supply module, the pressure acquisition module, the temperature acquisition module, the RS485 module, the wireless communication module, the storage module and the main control chip are arranged, wherein the pressure acquisition module, the temperature acquisition module and the RS485 module are respectively used for acquiring and processing pressure data of the compressor unit, temperature data of the compressor unit and electric signals of the compressor unit, so that the monitoring capability of the compressor unit is enhanced; according to the method, the cloud real-time and historical data display and analysis functions are further increased, the storage data of the sd card is imported, the collected data are displayed more widely, the intelligent level of data collection state monitoring is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are achieved.
With continued reference to fig. 1, the main control chip includes:
the RS485 two-wire system interface is used for communicating with the RS485 module;
the 4G communication interface is used for enabling the main control chip to be in communication connection with the wireless communication module;
the analog input interface is used for enabling temperature data and pressure data detected by a temperature sensor and a pressure sensor arranged on an external component to be transmitted to the main control chip through the temperature acquisition module and the pressure acquisition module;
the DC interface is used for enabling the power supply module to supply power to the main control chip;
the hardware watchdog circuit is used for automatically resetting the internal program in the running process of the main control chip under the condition that the internal program runs or is deadlocked.
According to the utility model, the RS485 two-wire system interface, the 4G communication interface, the analog input interface, the DC interface and the hardware watchdog circuit are arranged in the main control chip, the temperature acquisition data and the pressure acquisition data are input into the main control chip through the analog input interface so that the main control chip can analyze and calculate the acquired data, and the internal program is automatically reset to protect the safety of the main control chip when the internal program runs or is in deadlock through the arranged hardware watchdog circuit, so that the processing capacity and the operation stability of the main control chip are improved, the operation stability of a state monitoring system of a compressor unit is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1, the type of the master control chip is an STM32 master control chip, and the communication protocols built in the master control chip include a standard MODBUS-RTU communication protocol, a TCP/IP communication protocol, a serial port communication protocol, an SPI communication protocol, and a custom transmission protocol.
According to the utility model, the communication protocols including the standard MODBUS-RTU communication protocol, the TCP/IP communication protocol, the serial port communication protocol, the SPI communication protocol, the custom transmission protocol and the like are built in the main control chip, so that the smoothness of information transmission of the main control chip is improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1, the main control chip acquires temperature detection data and pressure detection data of the temperature sensor and the pressure sensor in a master-slave mode, performs integrated processing analysis on each data when acquiring each data, and wirelessly and transparently transmits the data to a server platform through a 4G network.
According to the utility model, the master-slave data acquisition mode is set in the master control chip, so that the accuracy and comprehensiveness timeliness of data acquisition are realized, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1 and 2, the temperature acquisition module is a multi-path high-resolution temperature acquisition circuit, and includes:
the analog multiplexer is arranged in the temperature acquisition circuit and used for completing multichannel temperature data acquisition, and the on-resistance of the analog multiplexer is relatively constant in the whole input signal range;
the conversion detector is connected with the temperature sensor and is used for optimizing platinum resistance of temperature data detected by the temperature sensor;
and the high-precision analog-to-digital converter is connected with the conversion detector and is used for converting the ratio of the platinum resistance of the temperature sensor to the reference resistance value into digital output so as to perform high-resolution acquisition on the temperature of the compressor unit.
According to the utility model, the analog multiplexer, the conversion detector and the high-precision analog-to-digital converter are arranged in the temperature acquisition module, the stability of the on-resistance is improved, the low on-resistance, the low off-leakage current and the internal address decoding are realized through the analog multiplexer, the precision of temperature acquisition is improved through the high-precision analog-to-digital converter, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1 and fig. 5, the wireless communication module is a 4G network transparent circuit, and the 4G network transparent circuit supports protocols such as socket distribution, FTP self-update, FTP he update, and the like.
According to the utility model, through the set wireless communication module, protocols such as socket distribution, FTP self-updating and FTP other updating are supported, and the network transmission capacity of the wireless communication module is improved, so that the speed of information transmission is improved, the rapid control and state uploading of the compressor unit are realized, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1 and fig. 5, the functions of the 4G network transparent transmission circuit when performing wireless data communication with the private end platform and the server platform through the 4G network respectively include a serial data buffer function, heartbeat packet transmission, automatic reconnection of broken lines and permanent online.
According to the utility model, through setting the functions of serial data caching, heartbeat packet sending, automatic reconnection of broken lines, permanent online and the like in the 4G network transparent transmission circuit, cache data is not lost when connection is abnormal, stable improvement of connection between a data acquisition terminal and a cloud platform is realized, and more comprehensive, accurate and rapid state monitoring and operation control of a compressor unit are further realized.
With continued reference to fig. 1, the private cloud platform performs remote configuration and modification on the operation parameter information of the compressor unit through the corresponding sensing information of the compressor unit acquired by the compressor data acquisition terminal, and remotely synchronizes the configuration and modified information to the compressor data acquisition terminal after the configuration and modification on the compressor unit are completed.
According to the utility model, through the wireless transmission module and the private cloud platform, remote configuration and modification of the operation parameter information of the compressor unit can be realized, and the configuration and modification information is synchronized to the compressor data acquisition terminal, so that the data updating speed of the compressor data acquisition terminal is improved, and more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1, the peripheral module includes:
the power line is arranged between the external power supply and the power module and used for transmitting the electric energy of the corresponding rated voltage of the external power supply to the power module;
the first signal wire is arranged between the pressure acquisition module and the pressure sensor arranged on the compressor unit and used for transmitting control signals of the pressure sensor and pressure signals of the compressor unit acquired by the pressure sensor;
the second signal wire is arranged between the temperature acquisition module and a temperature sensor arranged on the compressor unit and used for transmitting control signals of the temperature sensor and temperature signals of the compressor unit acquired by the temperature sensor;
and 485 lines, which are arranged between the RS485 module and the compressor unit and used for transmitting control signals to the compressor unit and electric signals of the compressor unit.
The compressor data acquisition terminal supports 12 paths of PT100 temperature data acquisition and 10 paths of pressure data acquisition at most and is provided with a double-path RS485 communication interface, the acquisition precision of the temperature data acquisition is A level, the precision of the pressure sensor is 0.5, and the precision of the acquisition board is 0.2.
The private cloud platform maximally supports 255 RS485 measuring point data to be displayed.
According to the utility model, the power line, the first signal line, the second signal line and the 485 line are arranged in the peripheral module, the electric energy in the external power supply is transmitted to the data acquisition terminal through the power line, the stable supply of the electric energy is realized, the acquired temperature data and pressure data are transmitted to the data acquisition terminal through the arranged first signal line and second signal line, the rapid transmission of the data is realized, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
With continued reference to fig. 1, parameters of the private cloud platform for configuring the temperature sensor include: the parameters for configuring the pressure sensor by the private cloud platform comprise the following parameters: a pressure calibration coefficient and a pressure acquisition frequency; parameters of the private cloud platform for configuring the compressor unit include: RS485 grouping measuring points and RS485 hardware serial port parameters.
The private cloud platform monitors compressor unit data through each module of the system. The functions include: data management, device management, client management, alarm management, basic information management, system management and log management.
The private cloud platform can display controllable data and acquire data in real time according to the selected equipment, can select the data to be displayed according to the needs through a header selection frame, and can display a data history curve to analyze real-time data and history data.
According to the utility model, the configuration parameters of the temperature sensor, the pressure sensor and the compressor unit are set on the private cloud platform, and the data acquisition capacity and the adjustment capacity of the compressor unit are improved by configuring the parameters of the equipment, so that the scientificity and the rationality of data acquisition are improved, and the more comprehensive, accurate and rapid state monitoring and operation control of the compressor unit are further realized.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will be within the scope of the present utility model.
The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model; various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A compressor data acquisition terminal, comprising:
a protective housing;
the power module is arranged in the protective shell and is connected with a power line which is led out from an external power supply in the peripheral module, and is used for supplying power to an electric component in the protective shell of the compressor data acquisition terminal through electric energy provided by the external power supply arranged outside the protective shell;
the pressure acquisition module is connected with the power supply module and a main control chip arranged in the protective shell and used for acquiring the pressure of the compressor and transmitting pressure detection information of the compressor to the main control chip;
the temperature acquisition module is respectively connected with the pressure acquisition module and the main control chip and is used for detecting the temperature of the compressor and sending temperature detection data of the compressor to the main control chip;
the RS485 module is respectively connected with the temperature acquisition module and the main control chip and is used for enabling the terminal to be connected with a plurality of RS485 devices outside the terminal so as to establish communication with each connected RS485 type sensor;
the wireless communication module is respectively connected with the power supply module and the main control chip and is used for carrying out wireless data communication with the private cloud platform and the server platform through a 4G network;
the storage module is connected with the main control chip and is used for selecting a corresponding capacity SD card to store the acquired data when the use scenes with different storage capacity requirements are used;
the main control chip is respectively connected with the power supply module, the pressure acquisition module, the temperature acquisition module, the RS485 module, the wireless communication module and is used for acquiring data output by each module through master-slave communication and carrying out character superposition processing on the data; the main control chip is internally provided with a watchdog circuit subjected to antistatic treatment and a plurality of communication protocols.
2. The compressor data acquisition terminal of claim 1, wherein the main control chip comprises:
the RS485 two-wire system interface is used for communicating with the RS485 module;
the 4G communication interface is used for enabling the main control chip to be in communication connection with the wireless communication module;
the analog input interface is used for enabling temperature data and pressure data detected by a temperature sensor and a pressure sensor arranged on an external component to be transmitted to the main control chip through the temperature acquisition module and the pressure acquisition module;
the DC interface is used for enabling the power supply module to supply power to the main control chip;
the hardware watchdog circuit is used for automatically resetting the internal program in the running process of the main control chip under the condition that the internal program runs or is deadlocked.
3. The compressor data acquisition terminal of claim 2, wherein the master control chip is an STM32 master control chip, and the communication protocol built in the master control chip includes a standard MODBUS-RTU communication protocol, a TCP/IP communication protocol, a serial communication protocol, an SPI communication protocol, and a custom transmission protocol.
4. The compressor data acquisition terminal according to claim 3, wherein the main control chip acquires temperature detection data and pressure detection data of the temperature sensor and the pressure sensor in a master-slave mode, performs integrated processing analysis on each data when acquiring each data, and transmits the data to the server platform in a wireless transmission manner through a 4G network.
5. The compressor data acquisition terminal of claim 4, wherein the temperature acquisition module is a multi-path high resolution temperature acquisition circuit comprising:
the analog multiplexer is arranged in the temperature acquisition circuit and used for completing multichannel temperature data acquisition, and the on-resistance of the analog multiplexer is relatively constant in the whole input signal range;
the conversion detector is connected with the temperature sensor and is used for optimizing platinum resistance of temperature data detected by the temperature sensor;
and the high-precision analog-to-digital converter is connected with the conversion detector and is used for converting the ratio of the platinum resistance of the temperature sensor to the reference resistance value into digital output so as to perform high-resolution acquisition on the temperature of the compressor unit.
6. The compressor data acquisition terminal of claim 1, wherein the wireless communication module is a 4G network pass-through circuit that supports socket distribution, FTP self-refresh, and FTP he refresh protocols.
7. The compressor data acquisition terminal of claim 6, wherein the functions of the 4G network transparent circuit when in wireless data communication with the private end platform and the server platform respectively through the 4G network include a serial data caching function, a heartbeat packet transmission, an automatic reconnection of a broken wire, and a permanent online.
8. The compressor data acquisition terminal of claim 7, wherein the private cloud platform remotely configures and modifies the operating parameter information of the compressor unit through corresponding sensing information of the compressor unit acquired by the compressor data acquisition terminal and remotely synchronizes the configured and modified information to the compressor data acquisition terminal after the configuration and modification of the compressor unit are completed.
9. The compressor data acquisition terminal of claim 1, wherein the peripheral module comprises:
the power line is arranged between the external power supply and the power module and used for transmitting the electric energy of the corresponding rated voltage of the external power supply to the power module;
the first signal wire is arranged between the pressure acquisition module and the pressure sensor arranged on the compressor unit and used for transmitting control signals of the pressure sensor and pressure signals of the compressor unit acquired by the pressure sensor;
the second signal wire is arranged between the temperature acquisition module and a temperature sensor arranged on the compressor unit and used for transmitting control signals of the temperature sensor and temperature signals of the compressor unit acquired by the temperature sensor;
and 485 lines, which are arranged between the RS485 module and the compressor unit and used for transmitting control signals to the compressor unit and electric signals of the compressor unit.
10. The compressor data acquisition terminal of claim 8, wherein the parameters of the private cloud platform to configure the temperature sensor include: the parameters for configuring the pressure sensor by the private cloud platform comprise the following parameters: a pressure calibration coefficient and a pressure acquisition frequency; parameters of the private cloud platform for configuring the compressor unit include: RS485 grouping measuring points and RS485 hardware serial port parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466070.0U CN220191053U (en) | 2023-03-13 | 2023-03-13 | Compressor data acquisition terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466070.0U CN220191053U (en) | 2023-03-13 | 2023-03-13 | Compressor data acquisition terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220191053U true CN220191053U (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320466070.0U Active CN220191053U (en) | 2023-03-13 | 2023-03-13 | Compressor data acquisition terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220191053U (en) |
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2023
- 2023-03-13 CN CN202320466070.0U patent/CN220191053U/en active Active
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