Measuring device for process automation in industrial environment

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By designing a measuring device including a sensor group, a multi-channel switching module, a data acquisition module and a control module in an industrial environment, the problems of simultaneous measurement of various data in the prior art are solved, and the goals of reducing equipment costs, expanding application scenarios and data transmission reliability are achieved.

CN222914081UActive Publication Date: 2025-05-27LIAONING PETROCCHEM VOCATIONAL & TECH COLLEGE

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Patent Information

Application Number: CN202422066259.8
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-08-26
Publication Date: 2025-05-27
Estimated Expiration: 2034-08-26

AI Technical Summary

Technical Problem

In an industrial environment, it is difficult for the existing technology to achieve simultaneous measurement of multiple data, resulting in the need to install multiple measurement equipment, which increases the cost of equipment and is not conducive to the intelligence of process automation.

Method used

Design a process automation measurement device for industrial environments, including sensor groups, multi-channel switching modules, data acquisition modules and control modules, and realize integrated measurement and redundant transmission of multiple data through multi-channel switching modules and wireless communication modules.

Benefits of technology

Through the integrated measurement of multiple data, the equipment reduces the cost of equipment layout, expands application scenarios, simplifies deployment, and improves the reliability of data transmission through redundant transmission, avoiding the increase in data transmission waiting time.

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Abstract

The utility model discloses a measuring device for process automation in an industrial environment, which comprises a sensor group, a multi-channel switching module, a data acquisition module and a control module which are arranged on a production line, and a signal output end of the sensor group is connected to a signal input end group of the multi-channel switching module. A signal output end group of the multi-channel switching module is connected to an input end of the control module through a data acquisition module, a control end of the multi-channel switching module is connected with a control signal output end of the control module, and a first signal output end of the control module is connected with a first wireless communication module through a first signal amplification circuit. And a second signal output end of the control module is connected with a second wireless communication module through a second signal amplification circuit. The layout cost of the existing measurement equipment is effectively reduced, the application scene is wider, the deployment is simpler, and the reliability of data transmission is also improved.

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Description

Technical Field

[0001] The utility model relates to the technical field of process automation in industrial environments, and particularly relates to a measuring device for process automation in industrial environments. Background Art

[0002] Industrial process automation refers to the technology that comprehensively applies control theory, electronic equipment, instruments and meters, computers and other information technologies to realize detection, control, optimization, scheduling, management and decision-making of industrial production processes, so as to achieve the purposes of increasing production, improving quality, reducing consumption, ensuring safety, etc.

[0003] In modern process industries and factory automation, many field devices and measuring devices are usually installed in complex facilities, and the measurement data of the field devices are wirelessly uploaded to the process control system through, for example, bus wiring or wireless communication modules such as Bluetooth or WLAN to achieve process automation control.

[0004] In the context of Industry 4.0 and the Industrial Internet of Things (IIoT), the intelligent networking of field devices has become increasingly important. However, due to the large variety of data types that need to be measured, if these data need to be measured simultaneously, different measuring devices need to be installed on-site, which undoubtedly brings high equipment costs and is not conducive to the intelligence of process automation. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a measuring device for process automation in industrial environments, which can integrate the measurement of multiple data into one to overcome the defects existing in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A measuring device for process automation in industrial environments, which is characterized in that: it includes a sensor group, a multi-channel switching module, a data acquisition module and a control module arranged on the production line. The signal output end of the sensor group is connected to the signal input end group of the multi-channel switching module. The signal output end group of the multi-channel switching module is connected to the input end of the control module through the data acquisition module. The control end of the multi-channel switching module is connected to the control signal output end of the control module. The first signal output end of the control module is connected with a first wireless communication module through a first signal amplification circuit. The second signal output end of the control module is connected with a second wireless communication module through a second signal amplification circuit. The control module controls the first wireless communication module and the second wireless communication module, so that the first wireless communication module and the second wireless communication module transmit the same measurement data to the process control system.

[0008] Further, a storage module is also connected to the control module.

[0009] Further, a status indication module is also connected to the control module.

[0010] Further, the first signal amplification circuit includes operational amplifiers U1, U2, and U3. The non-inverting input terminal of operational amplifier U1 is connected to the first signal output terminal of the control module. The inverting input terminal of operational amplifier U1 is grounded through resistor R1. The output terminal of operational amplifier U1 is connected to the non-inverting input terminal of operational amplifier U3 through resistor R3. The inverting input terminal of operational amplifier U3 is connected to the output terminal of operational amplifier U2 through resistor R5. The non-inverting input terminal of operational amplifier U2 is connected to the power supply through resistor R9. The inverting input terminal of operational amplifier U2 is connected to its output terminal through resistor R4. The output terminal of operational amplifier U3 is connected to the first wireless communication module through resistor R6. The output terminal of operational amplifier U3 is also connected to its inverting input terminal through resistor R8.

[0011] Further, the non-inverting input terminal of operational amplifier U1 is also grounded through capacitor C1. The inverting input terminal of operational amplifier U1 is also grounded through resistor R1. The non-inverting input terminal of operational amplifier U2 is also grounded through resistor R10. The non-inverting input terminal of operational amplifier U3 is also grounded through capacitor C2. The inverting input terminal of operational amplifier U3 is grounded through the parallel combination of resistor R7 and capacitor C3. The common terminal between resistor R6 and the first wireless communication module is grounded through capacitor C4. A voltage stabilizing diode D1 is reversely connected in parallel on capacitor C4.

[0012] Further, the circuit structures of the first signal amplification circuit and the second signal amplification circuit are the same.

[0013] Further, the control module is composed of an STM32F103RCT6 microprocessing chip and its peripheral circuits.

[0014] Further, the communication methods adopted by the first wireless communication module and the second wireless communication module are different.

[0015] Further, the first wireless communication module adopts at least one communication method among LoRa, Sigfox, NB-IoT, or Mioty; the second wireless communication module adopts at least one communication method among 4G, 5G, or GPRS.

[0016] Further, the multi-channel switching module adopts an analog switch circuit based on a 74HC4051 chip or an analog switch circuit based on a TS12A12511 chip.

[0017] The remarkable effect of the present utility model is:

[0018] During the use of this device, the sensor group is used to measure the data to be measured of the target to be produced on the production line, and the multi-channel switching module continuously and cyclically selects one of the data in real time according to the cyclic control signal of the control module, and inputs it into the control module through the data acquisition module. The control module uploads the acquired data to the process control system simultaneously through the first wireless communication module and the second wireless communication module.

[0019] It can be seen that by integrating the measurement of multiple data into one, this measurement device effectively reduces the layout cost of existing measurement devices, has a wider application scenario, is simpler to deploy, and at the same time, through the first wireless communication module and the second wireless communication module, it can send or transmit measurement data to the outside at different frequencies and / or by using different protocols on-site, improving the reliability of data transmission.

[0020] In addition, by uploading the data to the process control system simultaneously through the first wireless communication module and the second wireless communication module, redundant transmission of measurement data is realized, which can increase the reliability of data transmission from the measurement device to the process control system. Therefore, there is no need to set up a feedback channel in the measurement device. Therefore, it is possible to advantageously avoid or at least minimize the waiting time when further transmitting data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the principle block diagram of the present utility model;

[0022] Figure 2 is the circuit schematic diagram of the first signal amplification circuit;

[0023] Figure 3 is the principle block diagram when the present utility model is applied DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further details the specific embodiments and working principles of the present utility model in conjunction with the drawings.

[0025] Embodiment 1:

[0026] As Figure 1As shown in the figure, a measuring device for process automation in an industrial environment includes a sensor group, a multi-channel switching module, a data acquisition module, a control module, and a power supply module disposed on a production line. The signal output end of the sensor group is connected to the signal input end group of the multi-channel switching module. The signal output end group of the multi-channel switching module is connected to the input end of the control module via the data acquisition module. The control end of the multi-channel switching module is connected to the control signal output end of the control module. The first signal output end of the control module is connected to a first wireless communication module via a first signal amplification circuit. The second signal output end of the control module is connected to a second wireless communication module via a second signal amplification circuit. The control module controls the first wireless communication module and the second wireless communication module so that the first wireless communication module and the second wireless communication module transmit the same measurement data to the process control system. A storage module is also connected to the control module, and a status indication module is also connected to the control module. Specifically:

[0027] The sensor group is used to measure the data to be measured of the target to be measured on the production line;

[0028] The multi-channel switching module is used to continuously and cyclically select one of the data inputs to the data acquisition module in real time according to the cyclic control signal of the control module;

[0029] The data acquisition module is used to filter, perform analog-to-digital conversion, amplify, etc. on the data uploaded by the multi-channel switching module and then input it to the control module;

[0030] The control module is used to generate the cyclic control signal and simultaneously send the data uploaded by the received data acquisition module to the first signal amplification circuit and the second signal amplification circuit;

[0031] The first signal amplification circuit and the second signal amplification circuit are used to perform signal amplification processing on the data output by the control module;

[0032] The first wireless communication module and the second wireless communication module are used to upload data to the process control system simultaneously;

[0033] The storage module is used to store the measured data;

[0034] The status indication module is used to indicate the working status of this device, such as a red light for abnormality and a green light for normal operation;

[0035] The power supply module is used to provide working power for the above-mentioned modules.

[0036] In this example, to simplify the implementation cost and management cost of the circuit, the circuit structures of the first signal amplification circuit and the second signal amplification circuit are the same. Taking the first signal amplification circuit as an example for illustration, please refer to the appendix Figure 2 , the first signal amplification circuit includes operational amplifiers U1, U2, and U3. The non-inverting input terminal of operational amplifier U1 is connected to the first signal output terminal of the control module. The inverting input terminal of operational amplifier U1 is grounded through resistor R1. The output terminal of operational amplifier U1 is connected to the non-inverting input terminal of operational amplifier U3 through resistor R3. The inverting input terminal of operational amplifier U3 is connected to the output terminal of operational amplifier U2 through resistor R5. The non-inverting input terminal of operational amplifier U2 is connected to the power supply through resistor R9. The inverting input terminal of operational amplifier U2 is connected to its output terminal through resistor R4. The output terminal of operational amplifier U3 is connected to the first wireless communication module through resistor R6. The output terminal of operational amplifier U3 is also connected to its inverting input terminal through resistor R8.

[0037] Further, the non-inverting input terminal of operational amplifier U1 is also grounded through capacitor C1. The inverting input terminal of operational amplifier U1 is also grounded through resistor R1. The non-inverting input terminal of operational amplifier U2 is also grounded through resistor R10. The non-inverting input terminal of operational amplifier U3 is also grounded through capacitor C2. The inverting input terminal of operational amplifier U3 is grounded through the parallel combination of resistor R7 and capacitor C3. The common terminal between resistor R6 and the first wireless communication module is grounded through capacitor C4. A zener diode D1 is reversely connected in parallel on capacitor C4.

[0038] Based on the above circuit structure, the data output by the control module is amplified by two stages of operational amplifiers U1 and U3 and then output to the first wireless communication module for uploading by the first wireless communication module.

[0039] In this embodiment, the sensor group includes multiple sensors. The sensors related to process automation mainly include pressure sensors, temperature sensors, humidity sensors, MEMS sensors, torque sensors, proximity switches, photoelectric sensors, displacement sensors, encoders, microswitches, etc. The data types measured by these sensors are different, so different data interfaces are required to upload the collected data to the process control system through the control module. For this reason, in this embodiment, a multi-channel switching module controlled by the designed control module can continuously and cyclically select one of the data inputs to the data acquisition module and, after passing through the control module, the first wireless communication module and the second wireless communication module are used to upload the data to the process control system simultaneously.

[0040] The control module is composed of an STM32F103RCT6 microprocessing chip and its peripheral circuits. STM32F103RCT6 is an integrated circuit of an embedded microcontroller, with a core size of 32 bits, a speed of 72 MHz, a program memory capacity of 256 KB, a program memory type of FLASH, and a RAM capacity of 48K. The multi-channel switching module adopts a multiple-choice-one analog switch circuit based on multiple 74HC4051 chips or an analog switch circuit using a TS12A12511 chip. The TS12A12511 chip is a single-pole double-throw analog switch that can transmit signals with voltage values of 0 - 12V or -6V - 6V, has the same bidirectional conduction performance, a low on-resistance of 5Ω, a channel matching resistance of less than 1Ω, and a maximum current consumption < 1μA.

[0041] Further, the communication methods adopted by the first wireless communication module and the second wireless communication module are different. The first wireless communication module adopts at least one communication method among LoRa, Sigfox, NB-IoT, or Mioty; the second wireless communication module adopts at least one communication method among 4G, 5G, or GPRS. Of course, the first wireless communication module and the second wireless communication module can also adopt other wireless communication methods.

[0042] Embodiment 2:

[0043] As Figure 3 shown, this embodiment presents a principle block diagram of the measurement device described in Embodiment 1 for process automation. As Figure 3 can be seen, during application, the first wireless communication module is connected to the cloud through a gateway, and the second wireless communication module is connected to the cloud. The cloud simultaneously receives the data transmitted by the first wireless communication module and the second wireless communication module and forwards it to the server. The data input end group of the process control system obtains data in the server and then generates a control signal, and distributes the control signal to the controllers of the production equipment on the corresponding production line.

[0044] In summary, during the use of this measurement device, the sensor group measures the data to be measured of the target to be measured on the production line to be measured, and the multi-channel switching module continuously and cyclically selects one of the data in real time according to the cyclic control signal of the control module and inputs it into the control module through the data acquisition module. The control module uploads the acquired data to the process control system simultaneously through the first wireless communication module and the second wireless communication module. Thus, by integrating the measurement of multiple types of data into one, the layout cost of the existing measurement device is effectively reduced, the application scenario is wider, the deployment is simpler, and at the same time, through the first wireless communication module and the second wireless communication module, measurement data can be sent or transmitted to the outside at different frequencies and / or by using different protocols on site, improving the reliability of data transmission. In addition, by uploading the data to the process control system simultaneously through the first wireless communication module and the second wireless communication module, redundant transmission of the measurement data is realized, which can increase the reliability of data transmission from the measurement device to the process control system. Therefore, there is no need to set up a feedback channel in the measurement device. Therefore, the waiting time for further data transmission can be advantageously avoided or at least minimized.

[0045] The technical solution provided by the present utility model has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A measuring device for process automation in an industrial environment, characterized in that The invention comprises a sensor group, a multi-channel switching module, a data acquisition module and a control module arranged on a production line, wherein the signal output end of the sensor group is connected to the signal input end group of the multi-channel switching module, the signal output end group of the multi-channel switching module is connected to the input end of the control module via the data acquisition module, the control end of the multi-channel switching module is connected to the control signal output end of the control module, the first signal output end of the control module is connected to the first wireless communication module via the first signal amplifying circuit, the second signal output end of the control module is connected to the second wireless communication module via the second signal amplifying circuit, and the control module controls the first wireless communication module and the second wireless communication module so that the first wireless communication module and the second wireless communication module transmit the same measurement data to the process control system.

2. The measuring device for process automation in an industrial environment according to claim 1, characterized in that The control module is also connected to a storage module.

3. The measuring device for process automation in an industrial environment according to claim 2, characterized in that The control module is also connected to a status indication module.

4. The measuring device for process automation in an industrial environment according to claim 1, characterized in that The first signal amplifying circuit includes an operational amplifier U1, an operational amplifier U2, and an operational amplifier U3. The non-inverting input terminal of the operational amplifier U1 is connected to the first signal output terminal of the control module, the inverting input terminal of the operational amplifier U1 is grounded via a resistor R1, the output terminal of the operational amplifier U1 is connected to the non-inverting input terminal of the operational amplifier U3 via a resistor R3, the inverting input terminal of the operational amplifier U3 is connected to the output terminal of the operational amplifier U2 via a resistor R5, the non-inverting input terminal of the operational amplifier U2 is connected to the power supply via a resistor R9, the inverting input terminal of the operational amplifier U2 is connected to its output terminal via a resistor R4, the output terminal of the operational amplifier U3 is connected to the first wireless communication module via a resistor R6, and the output terminal of the operational amplifier U3 is also connected to its inverting input terminal via a resistor R8.

5. The measuring device for process automation in an industrial environment according to claim 4, characterized in that The non-inverting input terminal of the operational amplifier U1 is also grounded via the capacitor C1, the inverting input terminal of the operational amplifier U1 is also grounded via the resistor R1, the non-inverting input terminal of the operational amplifier U2 is also grounded via the resistor R10, the non-inverting input terminal of the operational amplifier U3 is also grounded via the capacitor C2, the inverting input terminal of the operational amplifier U3 is also grounded via the parallel resistor R7 and capacitor C3, the common terminal between the resistor R6 and the first wireless communication module is grounded via the capacitor C4, and a voltage regulator diode D1 is reversely connected in parallel to the capacitor C4.

6. The measuring device for process automation in an industrial environment according to claim 1, 4 or 5, characterized in that: The circuit structure of the first signal amplifying circuit is consistent with that of the second signal amplifying circuit.

7. The measuring device for process automation in an industrial environment according to claim 1, characterized in that: The control module is composed of a STM32F103RCT6 microprocessor chip and its peripheral circuits.

8. The measuring device for process automation in an industrial environment according to claim 1, characterized in that: The first wireless communication module and the second wireless communication module use different communication modes.

9. The measuring device for process automation in an industrial environment according to claim 1 or 8, characterized in that: The first wireless communication module adopts at least one communication method among LoRa, Sigfox, NB-IoT or Mioty; the second wireless communication module adopts at least one communication method among 4G, 5G or GPRS.

10. The measuring device for process automation in an industrial environment according to claim 1, characterized in that: The multi-channel switching module adopts an analog switch circuit based on a 74HC4051 chip or an analog switch circuit based on a TS12A12511 chip.