CN220983738U - Control panel circuit of handheld process calibrator - Google Patents
Control panel circuit of handheld process calibrator Download PDFInfo
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- CN220983738U CN220983738U CN202321098467.5U CN202321098467U CN220983738U CN 220983738 U CN220983738 U CN 220983738U CN 202321098467 U CN202321098467 U CN 202321098467U CN 220983738 U CN220983738 U CN 220983738U
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000002955 isolation Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model relates to a control panel circuit of a handheld process calibrator, which comprises a CPU (central processing unit), a power management module, an APC (advanced power control) input module, a PAC (programmable logic controller) output module, a storage module and a touch display module, wherein the CPU is respectively and electrically connected with the power management module, the APC input module, the PAC output module, the storage module and the touch display module, the power management module comprises a DC5V power supply circuit and a DC3.3V power supply circuit, the APC input module comprises a voltage input detection circuit and a current input detection circuit, and the PAC output module comprises a voltage output detection circuit and a current output detection circuit; the design of the power management module converts a 12V power supply into a 5V power supply and a 3.3V power supply respectively through two independent circuits in the power management module, independently reduces voltage to output DC5V and DC3.3V respectively, supplies power to other modules, and separately reduces voltage of the two paths of DC power supply modules, so that mutual interference of the DC5V and DC3.3V power supplies can be effectively avoided, and the stability of a power supply system is ensured.
Description
Technical Field
The utility model relates to the technical field of process calibration instruments, in particular to a control panel circuit of a handheld process calibration instrument.
Background
The process check meter is a battery-powered, hand-held, portable meter that can be used to measure and output various signals, except for basic analog output and measurement functions; in the prior art, a hand-held portable process calibrator generally adopts a single-path power supply circuit to convert external 12V voltage into 5V or 3.3V voltage for each module in the process calibrator, and two different voltages of the single-path power supply circuit can generate interference in the actual use process, so that a power supply system is unstable.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a control board circuit of a handheld process calibrator, which aims to solve the technical problems in the background art.
In order to solve the problems, the utility model adopts the following technical scheme.
The utility model provides a handheld process check gauge control panel circuit, includes CPU, power management module, APC input module, PAC output module, storage module, touch-control display module, the CPU respectively with power management module APC input module PAC output module storage module touch-control display module electric connection, power management module includes DC5V power supply circuit, DC3.3V power supply circuit, APC input module includes voltage input detection circuit and current input detection circuit, PAC output module includes voltage output detection circuit and current output detection circuit.
Preferably, the CPU is packaged by adopting an LPC11U68JBD48K, ARM Cortex-M0+ inner core and LQFP48, the output frequency of the CPU ranges from 50Hz to 50KHz, and the output signal is a PWM signal with the duty ratio of 0% -100%.
Preferably, the DC5V power supply circuit and the DC3.3 power supply circuit both adopt JW5079A chips, and the DC5V power supply circuit and the DC3.3 power supply circuit both adopt 12V power sources.
Preferably, the voltage input detection circuit comprises a block GP9105 chip, an operational amplifier module OPA2180IDR and an isolation optocoupler OR-M501, and the current input detection circuit comprises a block GP9105, an operational amplifier module OPA2180IDR and an isolation optocoupler OR-M501.
Preferably, the voltage output detection circuit comprises a GP8101S chip and an isolated optocoupler OR-M501, and the current output detection circuit comprises a GP8102S and an isolated optocoupler OR-M501.
Preferably, the touch display module is respectively connected with the serial port screen and the touch screen through a UART interface and an I2C interface.
Preferably, the storage module is provided with a USB interface socket.
Compared with the prior art, the utility model has the advantages that:
According to the design of the power management module, a 12V power supply is respectively converted into a 5V power supply and a 3.3V power supply through two independent circuits in the power management module, DC5V and DC3.3V are respectively and independently reduced in voltage and output to other modules for supplying power, and the two paths of DC power supply modules are separated for independent voltage reduction, so that the mutual interference of DC5V and DC3.3V power supplies can be effectively avoided, and the stability of a power supply system of the power supply is ensured.
Drawings
FIG. 1 is a block diagram of the overall structure of a control board circuit of a handheld process check meter of the present utility model;
FIG. 2 is a circuit diagram of a power management module;
FIG. 3 is a voltage output detection circuit diagram;
FIG. 4 is a circuit diagram of a current output sense;
FIG. 5 is a voltage input detection circuit diagram;
FIG. 6 is a circuit diagram of a current input detection circuit;
FIG. 7 is a circuit diagram of a touch display module;
Fig. 8 is a circuit diagram of a memory module.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
Examples
Referring to fig. 1 to 8, a control board circuit of a handheld process calibration instrument includes a CPU, a power management module, an APC input module, a PAC output module, a storage module, and a touch display module, where the CPU is electrically connected to the power management module, the APC input module, the PAC output module, the storage module, and the touch display module, the power management module includes a DC5V power supply circuit and a dc3.3v power supply circuit, the APC input module includes a voltage input detection circuit and a current input detection circuit, and the PAC output module includes a voltage output detection circuit and a current output detection circuit.
In the embodiment, the CPU is packaged by adopting an LPC11U68JBD48K, ARM Cortex-M0+ inner core, the output frequency of the CPU ranges from 50Hz to 50KHz, and the output signal is a PWM signal with the duty ratio of 0% -100%.
In this embodiment, the DC5V power supply circuit and the DC3.3 power supply circuit both use JW5079A chips, and the DC5V power supply circuit and the DC3.3 power supply circuit both use 12V power supply.
In this embodiment, the voltage input detection circuit includes a block GP9105 chip, an op amp module OPA2180IDR and an isolated optocoupler OR-M501, and the current input detection circuit includes a block GP9105, an op amp module OPA2180IDR and an isolated optocoupler OR-M501.
In this embodiment, the voltage output detection circuit includes a GP8101S chip and an isolated optocoupler OR-M501, and the current output detection circuit includes a GP8102S and an isolated optocoupler OR-M501.
In this embodiment, the touch display module interfaces with the serial port screen and the touch screen through the UART interface and the I2C interface, respectively.
In this embodiment, the storage module is provided with a USB interface socket.
The working process of the utility model is as follows:
The operator can be supplied with power by a 12V power adapter or a 12V lithium battery through a power management module, the power module supplies DC5V and DC3.3V to other modules, a start key is pressed down, the calibrator starts working, the CPU carries out self-checking firstly, the state of each functional module is inquired, if each module is normal, the state is displayed through a serial screen, and the user can operate the touch panel to control the calibrator to work according to the operation guidance on the serial screen; accessing a probe at a voltage signal input port/a current signal input port, setting the probe into an APC mode, converting an analog voltage/analog current signal into a high-precision PWM signal through an APC input module, then analyzing the PWM signal to a CPU, and then displaying analysis data through a display module by the CPU; the method comprises the steps that a probe is connected to a voltage signal output port/a current signal output port, the voltage signal output port/the current signal output port is set to be in a PAC mode, a numerical value is set to a CPU through a touch display module, the CPU sends the numerical value to a PAC output module through a high-precision PWM signal to be converted into an analog voltage/analog current signal, and the analog voltage/the analog current signal is sent to external equipment through the voltage signal output port/the current signal output port; the 12V power supply is respectively converted into a 5V power supply and a 3.3V power supply through two independent circuits in the power management module, DC5V and DC3.3V are respectively and independently reduced in voltage and output to supply power to other modules, and the two paths of DC power supply modules are separated for independent voltage reduction, so that the mutual interference of DC5V and DC3.3V power supplies can be effectively avoided, and the stability of a power supply system is ensured; meanwhile, the USB storage module is also provided, so that information such as test data and the like can be stored in the USB flash disk, and the user can check the information conveniently.
The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.
Claims (7)
1. A hand-held type process check gauge control panel circuit, its characterized in that: the power supply management module comprises a DC5V power supply circuit and a DC3.3V power supply circuit, the APC input module comprises a voltage input detection circuit and a current input detection circuit, and the PAC output module comprises a voltage output detection circuit and a current output detection circuit.
2. The hand-held process check meter control board circuit of claim 1, wherein: the CPU is packaged by adopting an LPC11U68JBD48K and an ARM Cortex-M0+ inner core, the output frequency of the CPU ranges from 50Hz to 50KHz, and the output signal is a duty cycle PWM signal of 0% -100%.
3. The hand-held process check meter control board circuit of claim 1, wherein: the DC5V power supply circuit and the DC3.3 power supply circuit both adopt JW5079A chips, and the DC5V power supply circuit and the DC3.3 power supply circuit both adopt 12V power sources.
4. The hand-held process check meter control board circuit of claim 1, wherein: the voltage input detection circuit comprises a block GP9105 chip, an operational amplifier module OPA2180IDR and an isolation optocoupler OR-M501, and the current input detection circuit comprises a block GP9105, an operational amplifier module OPA2180IDR and an isolation optocoupler OR-M501.
5. The hand-held process check meter control board circuit of claim 1, wherein: the voltage output detection circuit comprises a GP8101S chip and an isolated optocoupler OR-M501, and the current output detection circuit comprises a GP8102S and an isolated optocoupler OR-M501.
6. The hand-held process check meter control board circuit of claim 1, wherein: the touch display module is respectively connected with the serial port screen and the touch screen through the UART interface and the I2C interface.
7. The hand-held process check meter control board circuit of claim 1, wherein: and the storage module is provided with a USB interface seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321098467.5U CN220983738U (en) | 2023-05-09 | 2023-05-09 | Control panel circuit of handheld process calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321098467.5U CN220983738U (en) | 2023-05-09 | 2023-05-09 | Control panel circuit of handheld process calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220983738U true CN220983738U (en) | 2024-05-17 |
Family
ID=91035547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321098467.5U Active CN220983738U (en) | 2023-05-09 | 2023-05-09 | Control panel circuit of handheld process calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220983738U (en) |
-
2023
- 2023-05-09 CN CN202321098467.5U patent/CN220983738U/en active Active
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