Intelligent digital display pressure sensor with multiple communication modes

Abstract

The utility model discloses a kind of intelligent digital display pressure sensors of multiple type communication mode, including pressure sensing module, single-chip microcontroller, processing module, output module and PLC control system.Pressure sensing module gathers and exports pressure signal;Single-chip microcontroller converts pressure signal into pressure value;Processing module is connected with single-chip microcontroller, and including mutually independent first processing module and second processing module, first processing module is used to convert pressure value into digital signal and output, second processing module is used to convert pressure value into analog signal and output;Output module has respectively docking first processing module's first output module, and docking second processing module's second output module;PLC control system is connected with first output module and second output module respectively.Compared with prior art, the utility model can adjust communication mode according to actual situation, with practicality.

Description

Technical Field

[0001] This utility model relates to an intelligent digital display pressure sensor with multiple communication methods, belonging to the field of industrial automation. Background Technology

[0002] Pressure sensors are primarily used in industrial automation, suitable for real-time pressure monitoring and remote configuration in scenarios such as hydraulic systems, pneumatic control, and industrial robots. However, existing traditional pressure sensors only provide switching signals and cannot transmit real-time pressure values, which clearly fails to meet the actual needs of scenarios requiring real-time pressure monitoring.

[0003] Furthermore, existing pressure sensors typically use the pure IO-Link protocol for communication. On one hand, IO-Link communication requires an external IO-Link master device, which is not only costly but also inconvenient. On the other hand, the limited communication method also means that the sensor cannot function properly in the event of a malfunction, affecting its practical use.

[0004] In view of this, it is indeed necessary to improve the existing intelligent digital display pressure sensor to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an intelligent digital display pressure sensor with multiple communication methods. This intelligent digital display pressure sensor with multiple communication methods can support various communication methods, providing the option to select the communication method according to the actual situation, and also avoiding the problem of equipment stopping operation in the event of a fault.

[0006] The technical solution of this utility model is: A smart digital display pressure sensor with multiple communication methods includes: The pressure sensing module collects and outputs pressure signals; A microcontroller is connected to the pressure sensing module and configured to convert the received pressure signal into a corresponding pressure value. The processing module is connected to the microcontroller and includes a first processing module and a second processing module that are independent of each other. The first processing module is used to convert the pressure value into a digital signal and output it, and the second processing module is used to convert the pressure value into an analog signal and output it. The output module is connected to the processing module and has a first output module that is respectively connected to the first processing module and a second output module that is connected to the second processing module. The PLC control system is connected to the first output module and the second output module respectively.

[0007] As a further improvement of this utility model, a processing device corresponding to the first processing module is also provided between the first output module and the PLC control system, and the first processing module, the first output module, the processing device and the PLC control system are bidirectionally connected.

[0008] As a further improvement of this utility model, a signal amplification module is also provided between the pressure sensing module and the microcontroller. The signal amplification module is used to amplify the pressure signal and output it to the microcontroller.

[0009] As a further improvement of this utility model, the intelligent digital display pressure sensor also includes a voltage reference module. There are two voltage reference modules. The first voltage reference module is connected to the pressure sensing module, the signal amplification module and the microcontroller respectively, and the second voltage reference module is connected to the second processing module.

[0010] As a further improvement of this utility model, a voltage control module is also provided between the first voltage reference module and the pressure sensing module. The voltage control module is configured to limit the voltage value output by the first voltage reference module within a fixed range.

[0011] As a further improvement of this utility model, the intelligent digital display pressure sensor also includes a temperature sensing module connected to the microcontroller. The temperature sensing module is configured to collect temperature values ​​and output the temperature values ​​to the microcontroller.

[0012] As a further improvement of this utility model, the microcontroller is provided with a temperature compensation module, which is connected to the temperature sensing module and converts the received temperature value into a corresponding compensation value.

[0013] As a further improvement of this utility model, the microcontroller is also provided with a comprehensive output module, which is connected to the temperature compensation module and configured to calculate and output a real-time pressure value based on the pressure value and the compensation value.

[0014] As a further improvement of this utility model, the intelligent digital display pressure sensor also includes a display module connected to the microcontroller, the display module being configured to display the pressure value output by the microcontroller.

[0015] As a further improvement of this utility model, the intelligent digital display pressure sensor also includes a light module connected to the microcontroller, the light module being configured to display the pressure value status by switching different colors.

[0016] The beneficial technical effects of this utility model are as follows: This utility model provides an intelligent digital display pressure sensor with multiple communication methods. By setting up an independent first processing module and a second processing module in the processing module, the first processing module is used to convert the pressure value output by the microcontroller into a digital signal and output it, and the second processing module is used to convert the pressure value output by the microcontroller into an analog signal and output it. By connecting the first output module of the first processing module and the second output module of the second processing module respectively, two output paths for connecting to the PLC control system are provided. These two paths can be opened simultaneously or one of them can be opened selectively, providing the option to select the communication method according to the actual situation, and avoiding the problem of equipment stopping operation in case of failure. Attached Figure Description

[0017] Figure 1 This is a structural block diagram of an intelligent digital display pressure sensor with multiple communication methods conforming to a preferred embodiment of the present utility model. Detailed Implementation

[0018] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0019] Please see Figure 1 As shown, this utility model discloses an intelligent digital display pressure sensor 100 with multiple communication methods. The intelligent digital display pressure sensor 100 includes a pressure sensing module 1, a microcontroller 2, a processing module 3, an output module 4, and a PLC control system 5.

[0020] The pressure sensing module 1 collects and outputs pressure signals. The microcontroller 2 is connected to the pressure sensing module 1 and is configured to convert the received pressure signals into corresponding pressure values. The processing module 3 is connected to the microcontroller 2 and is configured to convert the pressure values ​​output by the microcontroller into corresponding pressure value signals and output them to the PLC control system 5 through the output module 4.

[0021] In this embodiment, the processing module 3 includes a first processing module 31 and a second processing module 32 that are independent of each other. The first processing module 31 is used to convert the pressure value into a digital signal and output it, and the second processing module 32 is used to convert the pressure value into an analog signal and output it. Preferably, the first processing module 31 is an IO-Link physical layer chip, and the second processing module 32 is a DAC chip.

[0022] The output module 4 is connected to the processing module 3 and has a first output module 41 that interfaces with the first processing module 31 and a second output module 42 that interfaces with the second processing module 32. The first output module 41 is configured with an output port 1 and an output port 2. Both output ports 1 and 2 have threshold values. When the pressure value exceeds the threshold value of output port 1, it is output through output port 1; when the pressure value exceeds the threshold value of output port 2, it is output through output port 2. Output ports 1 and 2 are independent of each other and can control different devices or signal loops. For example, output port 1 controls the start and stop of a vacuum pump, while output port 2 triggers an alarm signal or indicator light. Each output port can have its own independently set pressure threshold. The second output module 42 is independent of the first output module 41; it simply converts the pressure value into an analog signal and outputs it without needing to use a different output port.

[0023] In this embodiment, the first processing module 31 and the first output module 41 are preferred communication lines, while the second processing module 32 and the second output module 42 are backup communication lines. During use, one can be selected according to actual needs. Alternatively, both lines can be started simultaneously, but in this case, the PLC control system 5 will use the output pressure signal received through the first processing module 31 and the first output module 41 as the standard.

[0024] A processing device 6 corresponding to the first processing module 31 is also provided between the first output module 41 and the PLC control system 5. The first processing module 31, the first output module 41, the processing device 6 and the PLC control system 5 are bidirectionally connected.

[0025] A signal amplification module 7 is also provided between the pressure sensing module 1 and the microcontroller 2. The signal amplification module 7 is used to amplify the pressure signal and output it to the microcontroller 2.

[0026] Preferably, the intelligent digital display pressure sensor 100 further includes a voltage reference module. Two voltage reference modules are provided: a first voltage reference module 81 is connected to the pressure sensing module 1, the signal amplification module 7, and the microcontroller 2, respectively; and a second voltage reference module 82 is connected to the second processing module 32. In other words, the voltage reference module 8 is used to provide a starting voltage for the corresponding module.

[0027] A voltage control module 83 is further provided between the first voltage reference module 81 and the pressure sensing module 1. The voltage control module 83 is configured to limit the voltage value output by the first voltage reference module 81 within a fixed range. Preferably, the voltage control module 83 is a constant current circuit used to control the voltage output by the first voltage reference module 81 to 1mA.

[0028] The intelligent digital display pressure sensor 100 also includes a temperature sensing module 9 connected to the microcontroller 2. The temperature sensing module 9 is configured to acquire temperature values ​​and output the temperature values ​​to the microcontroller 2. Typically, the acquired voltage values ​​will deviate from the actual voltage values ​​as the temperature varies.

[0029] Therefore, the microcontroller 2 includes a temperature compensation module 21, which is connected to the temperature sensing module 9 and converts the received temperature value into a corresponding compensation value. The microcontroller 2 also includes a comprehensive output module 22, which is connected to the temperature compensation module 9 and configured to calculate and output a real-time pressure value based on the pressure value and the compensation value. Thus, the temperature value collected by the temperature compensation module 21 can be used by the comprehensive output module 22 to compensate for the pressure and temperature values, resulting in a more accurate real-time pressure value. Optionally, the microcontroller 2 can also be configured with functions such as pressure calibration, unit switching, and alarm threshold setting.

[0030] Optionally, before use, a series of known pressures can be applied to the intelligent digital display pressure sensor 100 in a constant temperature chamber, and the sensor's original output value and corresponding temperature value can be recorded within a wide temperature range (e.g., -10°C, 0°C, 25°C, 50°C, 85°C), thus obtaining a large data table. After data fitting to the data table, a corresponding output value and temperature value model can be constructed, and the compensation value can be calculated based on this model. Of course, the compensation value can also be calculated in other ways, and there are no restrictions on this.

[0031] The intelligent digital display pressure sensor 100 also includes a display module 10 connected to the microcontroller 2. The display module 10 is configured to display the pressure value output by the microcontroller 2. This allows for real-time observation of the current pressure value, providing convenience.

[0032] The intelligent digital display pressure sensor 100 also includes a lighting module 11 connected to the microcontroller 2. The lighting module 11 is configured to display the pressure value status by switching different colors. The lighting module 11 has three LEDs, displaying red, green, and orange colors. The microcontroller 2 controls the LEDs' on / off state via GPIO to meet the different backlighting requirements of the display module 10. Optionally, the red and green LEDs provide backlighting for the first and second rows of real-time pressure display areas, while the orange LEDs provide backlighting for the third row's "Output Port 1" and "Output Port 2" status areas, as well as the alarm threshold setting display area. When the pressure value is within the set threshold range, the real-time pressure display shows a green backlight; when the pressure value exceeds the set pressure threshold, a red backlight is displayed.

[0033] The intelligent digital display pressure sensor 100 is also externally equipped with an operation module 12 connected to the microcontroller 2. The operation module 12 is configured to display control buttons on the display module 10 so that the intelligent digital display pressure sensor 100 can be manually controlled.

[0034] In summary, the intelligent digital display pressure sensor 100 with multiple communication methods of this utility model sets up an independent first processing module 31 and a second processing module 32 in the processing module 3. The first processing module 31 is used to convert the pressure value output by the microcontroller 2 into a digital signal and output it, and the second processing module 32 is used to convert the pressure value output by the microcontroller 2 into an analog signal and output it. By connecting the first output module 41 of the first processing module 31 and the second output module 42 of the second processing module 32 respectively, two output paths for connecting to the PLC control system 5 are provided. These two paths can be opened simultaneously or one of them can be opened selectively, providing the option to select the communication method according to the actual situation, and avoiding the problem of equipment stopping operation in case of failure.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A smart digital display pressure sensor with multiple communication methods, characterized in that, include: The pressure sensing module collects and outputs pressure signals; A microcontroller is connected to the pressure sensing module and configured to convert the received pressure signal into a corresponding pressure value. The processing module is connected to the microcontroller and includes a first processing module and a second processing module that are independent of each other. The first processing module is used to convert the pressure value into a digital signal and output it, and the second processing module is used to convert the pressure value into an analog signal and output it. The output module is connected to the processing module and has a first output module that is respectively connected to the first processing module and a second output module that is connected to the second processing module. The PLC control system is connected to the first output module and the second output module respectively.

2. The intelligent digital display pressure sensor with multiple communication methods according to claim 1, characterized in that, A processing device corresponding to the first processing module is also provided between the first output module and the PLC control system, and the first processing module, the first output module, the processing device and the PLC control system are bidirectionally connected.

3. The intelligent digital display pressure sensor with multiple communication methods according to claim 1, characterized in that, A signal amplification module is also provided between the pressure sensing module and the microcontroller. The signal amplification module is used to amplify the pressure signal and output it to the microcontroller.

4. The intelligent digital display pressure sensor with multiple communication methods according to claim 3, characterized in that, The intelligent digital display pressure sensor also includes a voltage reference module. There are two voltage reference modules. The first voltage reference module is connected to the pressure sensing module, the signal amplification module and the microcontroller respectively, and the second voltage reference module is connected to the second processing module.

5. The intelligent digital display pressure sensor with multiple communication methods according to claim 4, characterized in that, A voltage control module is further provided between the first voltage reference module and the pressure sensing module. The voltage control module is configured to limit the voltage value output by the first voltage reference module within a fixed range.

6. The intelligent digital display pressure sensor with multiple communication methods according to claim 1, characterized in that, The intelligent digital display pressure sensor also includes a temperature sensing module connected to the microcontroller. The temperature sensing module is configured to collect temperature values ​​and output the temperature values ​​to the microcontroller.

7. The intelligent digital display pressure sensor with multiple communication methods according to claim 6, characterized in that, The microcontroller is equipped with a temperature compensation module, which is connected to the temperature sensing module and converts the received temperature value into a corresponding compensation value.

8. The intelligent digital display pressure sensor with multiple communication methods according to claim 7, characterized in that, The microcontroller also includes a comprehensive output module, which is connected to the temperature compensation module and configured to calculate and output a real-time pressure value based on the pressure value and the compensation value.

9. The intelligent digital display pressure sensor with multiple communication methods according to claim 1, characterized in that, The intelligent digital display pressure sensor also includes a display module connected to the microcontroller, which is configured to display the pressure value output by the microcontroller.

10. The intelligent digital display pressure sensor with multiple communication methods according to claim 1, characterized in that, The intelligent digital display pressure sensor also includes a light module connected to the microcontroller, which is configured to display the pressure value by switching different colors.

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