Industrial control bus analog quantity acquisition device
By designing a microcontroller integrating CAN controller and CAN transceiver, and combining an industrial control bus analog quantity acquisition device with an AD sampling module and an reporting interface unit, the problem of single acquisition method, non-universal modules and few channels in the prior art is solved, and efficient acquisition and remote transmission of multi-channel analog signals are realized.
Patent Information
- Application Number
- CN202421833292.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing industrial control bus analog quantity acquisition module has the problem of a single acquisition method, an inconsistent acquisition module cannot be universal and a few acquisition channels.
An industrial control bus analog quantity acquisition device is designed, using a microcontroller integrating a CAN controller and a CAN transceiver. Combined with an AD sampling module and an reporting interface unit, it supports a variety of analog quantity sensors and bus protocols to realize multi-channel analog signal acquisition and remote data transmission.
It realizes multi-channel transmission of multiple analog quantities, solves the problem that sensor signals cannot be transmitted remotely, and has universal and efficient data acquisition and transmission capabilities.
Smart Images
Figure CN222850872U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of data collection, in particular to the data collection of temperature, humidity and the like in the process of tobacco processing, specifically, to an industrial control bus analog quantity collection device. Background Art
[0002] The industrial control bus analog quantity acquisition module is a hardware device used to measure and collect analog signals. It usually contains multiple input channels, each of which can receive an analog input signal. These input signals can come from various sensors, transmitters, voltage sources, etc. The main task of the analog quantity acquisition module is to convert analog signals into digital signals and send them to the host computer or control system through a digital interface for further processing. Its basic principle is to use an analog-to-digital converter to discretize the continuously changing analog signal into a digital form.
[0003] In tobacco production sites, a variety of sensors are often installed, such as pressure, flow, current parameters, temperature, sound, etc. In addition, due to the limitations of the on-site environment, many sensor signals, such as the voltage or current signals output by the pressure sensor, cannot be transmitted remotely, and there is an inconsistency in the module protocol. PLC analog acquisition modules produced by different manufacturers are not universal, and the unit price is high and the number of channels is small. Utility Model Content
[0004] The utility model aims to provide an industrial control bus analog quantity acquisition device, which is used to solve the problems in the prior art that the industrial control bus analog quantity acquisition module has a single acquisition mode, is not universal between acquisition modules and has few acquisition channels.
[0005] The utility model solves the above problems through the following technical solutions:
[0006] An industrial control bus analog quantity acquisition device comprises a microcontroller integrated with a CAN controller and a CAN transceiver, wherein the microcontroller is connected with a storage unit, an AD sampling module and a reporting interface unit, wherein the reporting interface unit supports a bus protocol and is used for remotely transmitting data, and the AD sampling module integrates a variety of analog quantity sensors.
[0007] The utility model collects analog quantity through AD sampling module, converts it into digital quantity and inputs it into microcontroller. The microcontroller converts the signal into standard format, and then transmits the data remotely through the reporting interface, which solves the problem that the signal of some sensors in the prior art cannot be transmitted remotely. A variety of sensors are integrated in the AD sampling module to realize multi-channel transmission of multiple analog quantities. A collection device can meet the needs of different analog quantity collection and has universality.
[0008] Furthermore, the reporting interface supports one or more of Modbus, CAN and EtherCAT protocols.
[0009] The utility model can collect serial port data or analog variables, filter, amplify, denoise and other processing on the collected sensor signals, and then convert them into corresponding values, and transmit them remotely or communicate with the host computer through RS232, RS485, USB, Ethernet CAN bus, etc. The reporting interface supports bus protocols such as Modbus, CAN, EtherCAT, etc., which is convenient for integration into third-party application systems.
[0010] Furthermore, an isolation module is connected between the AD sampling module and the microcontroller. Furthermore, the isolation module is an optical coupler. The isolation technology is used to enhance the anti-interference ability and make the sampling more stable and more accurate.
[0011] Furthermore, the AD sampling module includes multiple acquisition channels, each of which includes an analog acquisition unit, a data processing unit and an AD conversion unit connected in sequence, and the data processing unit includes a filtering circuit and an amplifying circuit, and performs operations such as filtering and denoising on the signal to improve the accuracy and precision of the data.
[0012] Channel types support thermal resistance signals, thermocouple signals, current signals, voltage signals, etc., and can be switched arbitrarily.
[0013] Furthermore, the analog quantity acquisition unit is any one of a pressure sensor, a flow sensor, a current sensor, a voltage sensor, a temperature sensor, a humidity sensor, a liquid level sensor, a speed sensor and a power sensor.
[0014] The AD conversion unit starts to convert multiple analog signals one by one under the control of the microcontroller, and reads the converted digital results into the microcontroller. The microcontroller writes the processed results into the CAN controller in the form of 0 or 1 data, and the CAN controller reads 01, sends it to the CAN transceiver, and gives a signal to the microcontroller regardless of success or failure. The CAN transceiver converts the received 0 or 1 into a high or low level form, that is, a data format that complies with the CAN protocol, and sends it to the physical line of the CAN.
[0015] Furthermore, the microcontroller is also connected to a serial port to WiFi module.
[0016] Furthermore, the reporting interface is connected to the host computer and the cloud storage platform.
[0017] The storage methods in the present invention include local storage and cloud storage. In the local storage method, the data will be stored in the memory of the acquisition module itself or in an external storage device for subsequent query, analysis and processing; in the cloud storage method, all data will be uploaded to the cloud storage platform, which is convenient for real-time query and analysis through the Web interface and other methods.
[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0019] (1) The utility model can collect serial port data / analog data and transmit them remotely via RS232, RS485, USB, Ethernet CAN bus, etc.; the reporting interface of the utility model supports bus protocols such as Modbus, CAN, EtherCAT, etc., which is convenient for integration into third-party application systems; the collected sensor signals can also be processed by the AD sampling module, and then converted into corresponding values to communicate with the host computer via 485 or other methods.
[0020] (2) The utility model can transmit data remotely and realize multi-channel analog signal acquisition, which can meet different acquisition requirements and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a principle block diagram of the utility model;
[0022] Figure 2 This is the principle block diagram of the AD sampling module. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.
[0024] Example:
[0025] Combined with Figure 1 As shown, an industrial control bus analog quantity acquisition device includes a microcontroller integrating a CAN controller and a CAN transceiver, the microcontroller is connected to a storage unit, an AD sampling module and a reporting interface unit, the reporting interface unit supports the bus protocol and is used to transmit data remotely, and the AD sampling module integrates a variety of analog quantity sensors.
[0026] The utility model collects analog quantity through AD sampling module, converts it into digital quantity and inputs it into microcontroller. The microcontroller converts the signal into standard format, and then transmits the data remotely through the reporting interface, which solves the problem that the signal of some sensors in the prior art cannot be transmitted remotely. A variety of sensors are integrated in the AD sampling module to realize multi-channel transmission of multiple analog quantities. A collection device can meet the needs of different analog quantity collection and has universality.
[0027] Furthermore, the reporting interface supports one or more of Modbus, CAN and EtherCAT protocols.
[0028] The utility model can collect serial port data or analog variables, filter, amplify, denoise and other processing on the collected sensor signals, and then convert them into corresponding values, and transmit them remotely or communicate with the host computer through RS232, RS485, USB, Ethernet CAN bus, etc. The reporting interface supports bus protocols such as Modbus, CAN, EtherCAT, etc., which is convenient for integration into third-party application systems.
[0029] Furthermore, an isolation module is connected between the AD sampling module and the microcontroller. Furthermore, the isolation module is an optical coupler. The isolation technology is used to enhance the anti-interference ability and make the sampling more stable and more accurate.
[0030] Combination Figure 2 As shown, the AD sampling module includes multiple acquisition channels, each of which includes an analog acquisition unit, a data processing unit and an AD conversion unit connected in sequence. The data processing unit includes a filtering circuit and an amplifying circuit, and the signal is filtered, denoised and other operations are performed to improve the accuracy and precision of the data.
[0031] Channel types support thermal resistance signals, thermocouple signals, current signals, voltage signals, etc., and can be switched arbitrarily.
[0032] Furthermore, the analog quantity acquisition unit is any one of a pressure sensor, a flow sensor, a current sensor, a voltage sensor, a temperature sensor, a humidity sensor, a liquid level sensor, a speed sensor and a power sensor.
[0033] The AD conversion unit starts to convert multiple analog signals one by one under the control of the microcontroller, and reads the converted digital results into the microcontroller. The microcontroller writes the processed results into the CAN controller in the form of 0 or 1 data, and the CAN controller reads 01, sends it to the CAN transceiver, and gives a signal to the microcontroller regardless of success or failure. The CAN transceiver converts the received 0 or 1 into a high or low level form, that is, a data format that complies with the CAN protocol, and sends it to the physical line of the CAN.
[0034] Furthermore, the microcontroller is also connected to a serial port to WiFi module.
[0035] Furthermore, the reporting interface is connected to the host computer and the cloud storage platform.
[0036] The storage methods in the present invention include local storage and cloud storage. In the local storage method, the data will be stored in the memory of the acquisition module itself or in an external storage device for subsequent query, analysis and processing; in the cloud storage method, all data will be uploaded to the cloud storage platform, which is convenient for real-time query and analysis through the Web interface and other methods.
[0037] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.
Claims
1. An industrial control bus analog quantity acquisition device, comprising a microcontroller integrating a CAN controller and a CAN transceiver, characterized in that: The microcontroller is connected with a storage unit, an AD sampling module and a reporting interface unit. The reporting interface unit supports a bus protocol and is used for remotely transmitting data. The AD sampling module integrates a variety of analog sensors.
2. The industrial control bus analog quantity acquisition device according to claim 1 is characterized in that: The reporting interface supports one or more of Modbus, CAN and EtherCAT protocols.
3. The industrial control bus analog quantity acquisition device according to claim 1 is characterized in that: An isolation module is also connected between the AD sampling module and the microcontroller.
4. The industrial control bus analog quantity acquisition device according to claim 3 is characterized in that: The isolation module is an optical coupler.
5. The industrial control bus analog quantity acquisition device according to claim 1, characterized in that: The AD sampling module includes multiple acquisition channels, each of which includes an analog acquisition unit, a data processing unit and an AD conversion unit connected in sequence, and the data processing unit includes a filtering circuit and an amplifying circuit.
6. The industrial control bus analog quantity acquisition device according to claim 5, characterized in that: The analog quantity acquisition unit is any one of a pressure sensor, a flow sensor, a current sensor, a voltage sensor, a temperature sensor, a humidity sensor, a liquid level sensor, a speed sensor and a power sensor.
7. The industrial control bus analog quantity acquisition device according to claim 1, characterized in that: The microcontroller is also connected to a serial port to WiFi module.
8. The industrial control bus analog quantity acquisition device according to claim 1, characterized in that: The reporting interface is connected to the host computer and the cloud storage platform.