Single-chip microcomputer industrial weighing data processing system

Abstract

A single-chip microcomputer industrial weighing data processing system comprises a single-chip microcomputer U3.1, a data storage circuit, a USB module circuit, an LORA communication circuit, a power supply circuit and a serial port screen amp. A printer interface circuit, a current loop circuit and an RS485 communication circuit; the single chip microcomputer U3.1 is respectively connected with the data storage circuit, the USB module circuit, the LORA communication circuit and the serial port screen amp; the printer interface circuit is connected with the RS485 communication circuit. The power supply circuit comprises a single-chip microcomputer U3.1, a data storage circuit, a USB module circuit, an LORA communication circuit, a power supply circuit and a serial port screen amp. The printer interface circuit, the current loop circuit and the RS485 communication circuit supply power; a single-chip microcomputer U3.1 is used as a core control unit, so that high efficiency and stability of data processing are ensured. Meanwhile, the system integrates a USB module circuit, an LORA communication circuit and a serial port screen amp; various communication interfaces such as the printer interface circuit and the RS485 communication circuit facilitate communication and data exchange with external equipment, and remote monitoring and data management are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing, in particular to a single-chip industrial weighing data processing system. Background Art

[0002] In the modern industrial field, the accuracy and real-time performance of weighing data processing play a vital role in production process control and product quality assurance. With the continuous advancement of science and technology, the single-chip industrial weighing data processing system has gradually emerged, and has become an indispensable part of industrial production with its high efficiency, stability and flexibility. However, there are still some problems with the existing weighing data processing system. During the signal transmission process, the signal may be attenuated or interfered, which will affect the data transmission. Therefore, during the data transmission process, the data needs to be reliably stored and processed to ensure the safety and reliability of the system. In addition, with the development of technology, the weighing system may need to be upgraded or integrated with other systems, so it is also necessary to adopt a processing system that can be easily upgraded and expanded.

[0003] Therefore, a single-chip industrial weighing data processing system is needed to solve this problem. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a single-chip industrial weighing data processing system to effectively solve the above problems.

[0005] The technical solution is that the utility model includes a single chip microcomputer U3.1, a data storage circuit, a USB module circuit, a LORA communication circuit, a power supply circuit, a serial port screen & printer interface circuit, a current loop circuit and an RS485 communication circuit;

[0006] The single-chip computer U3.1 is respectively connected to the data storage circuit, USB module circuit, LORA communication circuit, serial port screen & printer interface circuit and RS485 communication circuit, and the power supply circuit supplies power to the single-chip computer U3.1, data storage circuit, USB module circuit, LORA communication circuit, power supply circuit, serial port screen & printer interface circuit, current loop circuit and RS485 communication circuit.

[0007] Further, the power supply circuit includes a voltage conversion chip U1 and a voltage conversion chip V1, wherein the pin 1 of the voltage conversion chip U1 is connected to the external input voltage, the pin 2 of the voltage conversion chip U1 is connected to the negative electrode through the Schottky diode D5, the pin 3 of the voltage conversion chip U1 is connected to the capacitor E4, the other end of the capacitor E4 is connected to the negative electrode, the inductor L1 is connected to the series connection point between the pin 2 of the voltage conversion chip U1 and the Schottky diode D5, the other end of the inductor L1 is connected to the series connection point between the pin 3 of the voltage conversion chip U1 and the capacitor E4, the capacitor E5 is connected in series between the connection point between the pin 1 of the voltage conversion chip U1 and the external input voltage and the negative electrode, and a capacitor C17 is also connected in parallel at both ends of the capacitor E4;

[0008] Pin 3 of the voltage conversion chip V1 is connected to another external input voltage, pin 1 of the voltage conversion chip V1 is connected to the negative electrode, pin 2 of the voltage conversion chip V1 is connected to one end of capacitor E6, the other end of capacitor E6 is connected to the negative electrode, a capacitor C21 is connected in parallel between the two ends of capacitor E6, and the two ends of capacitor C20 are respectively connected to pin 1 of the voltage conversion chip V1 and pin 3 of the voltage conversion chip V1.

[0009] Furthermore, the power supply circuit also includes a MOS tube U6, a MOS tube Q3, a diode D3, a diode D4, a resistor R16, a resistor R17 and a resistor R18, the drain of the MOS tube U6 is connected to the external input voltage, the source of the MOS tube U6 is connected to the battery, the gate of the MOS tube U6 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the switch, one end of the resistor R17 is connected to another input voltage, the other end of the resistor R17 is connected to the pin 2 of the single-chip computer U3.1, the series connection point of the resistor R17 and the pin 2 of the single-chip computer U3.1 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the switch, and the resistor R Two ends of 16 are respectively connected to the source and gate of the MOS tube U6, the drain of the MOS tube Q3 is connected to the series connection point of the gate of the MOS tube U6 and the diode D4, the source of the MOS tube Q3 is connected to the cathode, the gate of the MOS tube Q3 is connected to one end of the resistor R19, the other end of the resistor R19 is connected to the pin 14 of the single-chip computer U3.1, one end of the resistor R18 is connected to the external input voltage, the other end of the resistor R18 is connected to the pin 9 of the single-chip computer U3.1, the series connection point between the resistor R18 and the pin 9 of the single-chip computer U3.1 is connected to one end of the resistor R20, the other end of the resistor R20 is connected to the cathode, and the two ends of the resistor R20 are connected in parallel with the capacitor C19.

[0010] Furthermore, the data storage circuit includes a data storage chip U5, and the first pin, the second pin, the fifth pin and the sixth pin of the data storage chip U5 are respectively connected to the 33rd pin, the 35th pin, the 36th pin and the 34th pin of the single-chip computer U3.1.

[0011] Furthermore, the serial port screen & printer interface circuit includes a 232 communication chip IC1, a plug-in JP2 and a plug-in JP3, pins 9, 10, 11 and 12 of the 232 communication chip IC1 are respectively connected to pins 52, 51, 16 and 17 of the microcontroller U3.1, pins 13 and 14 of the 232 communication chip IC1 are respectively connected to pins 2 and 3 of the plug-in JP2, and pins 7 and 8 of the 232 communication chip IC1 are respectively connected to pins 4 and 5 of the plug-in JP3.

[0012] Furthermore, the current loop circuit includes a signal isolation chip U8, a resistor R4, and an NPN transistor Q4. Pin 2 of the signal isolation chip U8 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the collector of the NPN transistor Q4, the base of the NPN transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is connected to pin 42 of the microcontroller U3.1, and the emitter of the NPN transistor Q4 is connected to the cathode.

[0013] Furthermore, the RS485 communication circuit includes a 485 communication chip IC2, and pin 1 and pin 4 of the 485 communication chip IC2 are respectively connected to pin 53 and pin 54 of the single-chip computer U3.1.

[0014] Furthermore, the LORA communication circuit includes a LORA wireless communication chip U4, and pin 1, pin 2, pin 3 and pin 4 of the LORA wireless communication chip U4 are respectively connected to pin 59, pin 58, pin 29 and pin 30 of the single-chip computer U3.1.

[0015] Furthermore, the USB module circuit includes USB chip U1 and USB1, pin 13, pin 14, pin 15 and pin 16 of USB chip U1 are respectively connected to pin 20, pin 21, pin 22 and pin 23 of microcontroller U3.1, and USB1 pin 2 and pin 3 are respectively connected to pin 9 and pin 8 of USB chip U1.

[0016] The beneficial effects of the utility model are:

[0017] 1.Using the single-chip microcomputer U3.1 as the core control unit, it can collect and process the transmitted weighing data in real time and accurately, ensuring the efficiency and stability of data processing. At the same time, the system integrates multiple communication interfaces such as USB module circuit, LORA communication circuit, serial screen & printer interface circuit and RS485 communication circuit, supports multiple data transmission methods, facilitates communication and data exchange with external devices, and realizes remote monitoring and data management.

[0018] 2. Through the voltage conversion chips U1 and V1, a stable and reliable power supply is provided for the entire system. In addition, it is also equipped with control components such as MOS tube U6 and MOS tube Q3, which can realize power management and ensure that the system can operate stably under various working conditions.

[0019] 3. The data storage chip U5 is used for data storage and backup. Through the control of the single-chip computer U3.1, the system can save the weighing data to the storage chip in real time to ensure the security and reliability of the data, which helps to optimize the production process and improve product quality.

[0020] 4. Through components such as signal isolation chip U8 and NPN transistor Q4, accurate current signal transmission and measurement are achieved, which improves the measurement accuracy and anti-interference ability of the system, and can maintain stable performance even in complex industrial environments. In addition, the system also adopts a variety of anti-interference measures, such as filtering circuits and isolation technologies, which further improve the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a principle block diagram of the utility model.

[0022] Figure 2 This is the single chip microcomputer circuit diagram of the utility model.

[0023] Figure 3 This is a power supply circuit diagram of the utility model.

[0024] Figure 4 This is a data storage circuit diagram of the utility model.

[0025] Figure 5 This is the serial screen & printer interface circuit diagram of the utility model.

[0026] Figure 6 This is a current loop circuit diagram of the utility model.

[0027] Figure 7 This is the RS485 communication circuit diagram of the utility model.

[0028] Figure 8 This is the LORA communication circuit diagram of the utility model.

[0029] Fig. 9 This is a circuit diagram of the USB module of the utility model. DETAILED DESCRIPTION

[0030] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0031] Example:

[0032] Depend on Figure 1It is given that the utility model includes a single-chip microcomputer U3.1, a data storage circuit, a USB module circuit, a LORA communication circuit, a power supply circuit, a serial port screen & printer interface circuit, a current loop circuit and an RS485 communication circuit;

[0033] The single-chip computer U3.1 is respectively connected to the data storage circuit, USB module circuit, LORA communication circuit, serial port screen & printer interface circuit and RS485 communication circuit, and the power supply circuit supplies power to the single-chip computer U3.1, data storage circuit, USB module circuit, LORA communication circuit, power supply circuit, serial port screen & printer interface circuit, current loop circuit and RS485 communication circuit.

[0034] Depend on Figure 2 and Figure 3 It is given that the power supply circuit includes a voltage conversion chip U1 and a voltage conversion chip V1, wherein the pin 1 of the voltage conversion chip U1 is connected to the external input voltage, the pin 2 of the voltage conversion chip U1 is connected to the negative electrode through the Schottky diode D5, which is the internal output voltage, the pin 3 of the voltage conversion chip U1 is connected to the capacitor E4, the other end of the capacitor E4 is connected to the negative electrode, the inductor L1 is connected to the series connection point between the pin 2 of the voltage conversion chip U1 and the Schottky diode D5, the other end of the inductor L1 is connected to the series connection point between the pin 3 of the voltage conversion chip U1 and the capacitor E4, the capacitor E5 is connected in series between the connection point between the pin 1 of the voltage conversion chip U1 and the external input voltage and the negative electrode, which can filter and stabilize the input voltage, and a capacitor C17 is also connected in parallel at both ends of the capacitor E4;

[0035] Pin 3 of the voltage conversion chip V1 is connected to another external input voltage, pin 1 of the voltage conversion chip V1 is connected to the negative electrode, pin 2 of the voltage conversion chip V1 is connected to one end of capacitor E6, the other end of capacitor E6 is connected to the negative electrode, a capacitor C21 is connected in parallel between the two ends of capacitor E6, and the two ends of capacitor C20 are respectively connected to pin 1 of the voltage conversion chip V1 and pin 3 of the voltage conversion chip V1.

[0036] The power supply circuit also includes a MOS tube U6, a MOS tube Q3, a diode D3, a diode D4, a resistor R16, a resistor R17 and a resistor R18. The drain of the MOS tube U6 is connected to the external input voltage, the source of the MOS tube U6 is connected to the battery, the gate of the MOS tube U6 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the switch, one end of the resistor R17 is connected to another input voltage, the other end of the resistor R17 is connected to the pin 2 of the single-chip computer U3.1, the series connection point between the resistor R17 and the pin 2 of the single-chip computer U3.1 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the switch, and the two ends of the resistor R16 are connected to the anode of the diode D3. The ends are respectively connected to the source and gate of the MOS tube U6, the drain of the MOS tube Q3 is connected to the series connection point of the gate of the MOS tube U6 and the diode D4, the source of the MOS tube Q3 is connected to the cathode, the gate of the MOS tube Q3 is connected to one end of the resistor R19, the other end of the resistor R19 is connected to pin 14 of the single-chip computer U3.1, one end of the resistor R18 is connected to the external input voltage, the other end of the resistor R18 is connected to pin 9 of the single-chip computer U3.1, the series connection point between the resistor R18 and pin 9 of the single-chip computer U3.1 is connected to one end of the resistor R20, the other end of the resistor R20 is connected to the cathode, and the two ends of the resistor R20 are connected in parallel with a capacitor C19.

[0037] Depend on Figure 2 and Figure 4 It is given that the data storage circuit includes a data storage chip U5, and the 1st pin, 2nd pin, 5th pin and 6th pin of the data storage chip U5 are respectively connected to the 33rd pin, 35th pin, 36th pin and 34th pin of the single-chip computer U3.1, and the 51st pin of the single-chip computer U3.1 provides the clock signal required for normal operation for the 6th pin of the storage chip U5 in the data storage circuit, and the 36th pin of the single-chip computer U3.1 sends the data to be stored to the 5th pin of the data storage chip U5, and the 37th pin of the single-chip computer U3.1 receives the data to be stored to the 2nd pin of the data storage chip U5.

[0038] Depend on Figure 2 and Figure 5It is given that the serial port screen & printer interface circuit includes a 232 communication chip IC1, a plug-in JP2 and a plug-in JP3. Pins 9, 10, 11 and 12 of the 232 communication chip IC1 are respectively connected to pins 52, 51, 16 and 17 of the single-chip microcomputer U3.1. Pins 10 and 11 of the 232 communication chip IC1 receive data with the single-chip microcomputer U3.1. Pins 7 and 14 of the 232 communication chip IC1 forward the received data to the corresponding serial port screen and printer receiving end to complete the external transmission of data. Pins 13 and 14 of the 232 communication chip IC1 are respectively connected to pins 2 and 3 of the plug-in JP2. Pins 7 and 8 of the 232 communication chip IC1 are respectively connected to pins 4 and 5 of the plug-in JP3.

[0039] Depend on Figure 2 and Figure 6 It is given that the current loop circuit includes a signal isolation chip U8, a resistor R4, and an NPN transistor Q4. Pin 2 of the signal isolation chip U8 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the collector of the NPN transistor Q4, the base of the NPN transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is connected to pin 42 of the microcontroller U3.1, the emitter of the NPN transistor Q4 is connected to the negative electrode, the microcontroller U3.1 turns on or off the NPN transistor Q4 by outputting high and low levels, and the NPN transistor Q4 realizes a circuit loop with pins 1 and 2 of the signal isolation chip U8.

[0040] Depend on Figure 2 and Figure 7 It is given that the RS485 communication circuit includes a 485 communication chip IC2, and pin 1 and pin 4 of the 485 communication chip IC2 are respectively connected to pin 53 and pin 54 of the single-chip microcomputer U3.1, wherein pin 2 of the 485 communication chip IC2 is an enable pin of the transceiver chip, and the sending of data is controlled by pin 53 of the single-chip microcomputer U3.1 to achieve the purpose of sending or receiving data.

[0041] Depend on Figure 2 and Figure 8It is given that the LORA communication circuit includes a LORA wireless communication chip U4, and pin 1, pin 2, pin 3 and pin 4 of the LORA wireless communication chip U4 are respectively connected to pin 59, pin 58, pin 29 and pin 30 of the single-chip microcomputer U3.1, and pin 1 and pin 2 of the LORA wireless communication chip U4 and pin 59 and pin 58 of the single-chip microcomputer U3.1 change the working mode of the LORA communication module by configuring the level state of the pin, and pin 3 and pin 4 of the LORA wireless communication chip U4 and pin 29 and pin 30 of the single-chip microcomputer U3.1 respectively receive data from the internal wireless module and send data to the outside.

[0042] Depend on Figure 2 and Fig. 9 It is given that the USB module circuit includes a USB chip U1 and USB1. Pins 13, 14, 15 and 16 of the USB chip U1 are respectively connected to pins 20, 21, 22 and 23 of the single-chip microcomputer U3.1. The single-chip microcomputer U3.1, as a master device, is connected to pin 13 of the USB chip U1 through pin 20 to select a slave device and start communication. Pin 21 of the single-chip microcomputer U3.1 is connected to pin 14 of the USB chip, and tells the slave device to write or read data by sending a clock signal. Pin 23 of the single-chip microcomputer U3.1 is connected to pin 16 of the USB chip. The data collection timing may be the rising edge or falling edge of the clock signal, and data communication is performed between devices. Pin 2 and pin 3 of USB1, which serves as a serial port, are respectively connected to pin 9 and pin 8 of the USB chip U1.

[0043] In this embodiment, the single chip computer U3.1 can adopt the STM32F103RET6 chip, the RS232 communication chip IC1 can adopt the SP3232 chip, the RS4485 communication chip IC2 can adopt the TPT487 chip, the USB chip U1 can adopt the CH376T, the voltage conversion chip V1 can adopt the LD1117-3.3 chip, the voltage conversion chip U1 can adopt the XL1509-5.0E, the LORA wireless communication chip U4 can adopt the LLCC68 radio frequency chip, the data storage chip U5 can adopt the W25Q128JVSIQ data storage chip, and the signal isolation chip U8 can adopt the P185 chip.

[0044] The beneficial effects of the utility model are:

[0045] 1.Using the single-chip microcomputer U3.1 as the core control unit, it can collect and process the transmitted weighing data in real time and accurately, ensuring the efficiency and stability of data processing. At the same time, the system integrates multiple communication interfaces such as USB module circuit, LORA communication circuit, serial screen & printer interface circuit and RS485 communication circuit, supports multiple data transmission methods, facilitates communication and data exchange with external devices, and realizes remote monitoring and data management.

[0046] 2. Through the voltage conversion chips U1 and V1, a stable and reliable power supply is provided for the entire system. In addition, it is also equipped with control components such as MOS tube U6 and MOS tube Q3, which can realize power management and ensure that the system can operate stably under various working conditions.

[0047] 3. The data storage chip U5 is used for data storage and backup. Through the control of the single-chip computer U3.1, the system can save the weighing data to the storage chip in real time to ensure the security and reliability of the data, which helps to optimize the production process and improve product quality.

[0048] 4. Through components such as signal isolation chip U8 and NPN transistor Q4, accurate current signal transmission and measurement are achieved, which improves the measurement accuracy and anti-interference ability of the system, and can maintain stable performance even in complex industrial environments. In addition, the system also adopts a variety of anti-interference measures, such as filtering circuits and isolation technologies, which further improve the stability and reliability of the system.

[0049] The above-mentioned specific implementation modes / embodiments are specific implementation modes of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation modes of the utility model and the scope of the utility model. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application. These technical solutions include technical solutions that make any obvious replacements and modifications to the embodiments described herein, which are within the scope of protection of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A single-chip industrial weighing data processing system, characterized in that: Including single chip microcomputer U3.1, data storage circuit, USB module circuit, LORA communication circuit, power supply circuit, serial screen & printer interface circuit, current loop circuit and RS485 communication circuit; The single-chip computer U3.1 is respectively connected to the data storage circuit, USB module circuit, LORA communication circuit, serial port screen & printer interface circuit and RS485 communication circuit, and the power supply circuit supplies power to the single-chip computer U3.1, data storage circuit, USB module circuit, LORA communication circuit, power supply circuit, serial port screen & printer interface circuit, current loop circuit and RS485 communication circuit.

2. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The power supply circuit includes a voltage conversion chip U1 and a voltage conversion chip V1, wherein the pin 1 of the voltage conversion chip U1 is connected to an external input voltage, the pin 2 of the voltage conversion chip U1 is connected to a negative electrode through a Schottky diode D5, the pin 3 of the voltage conversion chip U1 is connected to a capacitor E4, the other end of the capacitor E4 is connected to the negative electrode, the inductor L1 is connected to the series connection point between the pin 2 of the voltage conversion chip U1 and the Schottky diode D5, the other end of the inductor L1 is connected to the series connection point between the pin 3 of the voltage conversion chip U1 and the capacitor E4, the capacitor E5 is connected in series between the connection point between the pin 1 of the voltage conversion chip U1 and the external input voltage and the negative electrode, and a capacitor C17 is also connected in parallel at both ends of the capacitor E4; Pin 3 of the voltage conversion chip V1 is connected to another external input voltage, pin 1 of the voltage conversion chip V1 is connected to the negative electrode, pin 2 of the voltage conversion chip V1 is connected to one end of capacitor E6, the other end of capacitor E6 is connected to the negative electrode, a capacitor C21 is connected in parallel between the two ends of capacitor E6, and the two ends of capacitor C20 are respectively connected to pin 1 of the voltage conversion chip V1 and pin 3 of the voltage conversion chip V1.

3. The single-chip industrial weighing data processing system according to claim 2 is characterized in that: The power supply circuit also includes a MOS tube U6, a MOS tube Q3, a diode D3, a diode D4, a resistor R16, a resistor R17 and a resistor R18. The drain of the MOS tube U6 is connected to the external input voltage, the source of the MOS tube U6 is connected to the battery, the gate of the MOS tube U6 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the switch, one end of the resistor R17 is connected to another input voltage, the other end of the resistor R17 is connected to pin 2 of the single-chip microcomputer U3.1, the series connection point of the resistor R17 and the pin 2 of the single-chip microcomputer U3.1 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the switch, and the The two ends are respectively connected to the source and gate of the MOS tube U6, the drain of the MOS tube Q3 is connected to the series connection point of the gate of the MOS tube U6 and the diode D4, the source of the MOS tube Q3 is connected to the cathode, the gate of the MOS tube Q3 is connected to one end of the resistor R19, the other end of the resistor R19 is connected to pin 14 of the single-chip computer U3.1, one end of the resistor R18 is connected to the external input voltage, the other end of the resistor R18 is connected to pin 9 of the single-chip computer U3.1, the series connection point between the resistor R18 and pin 9 of the single-chip computer U3.1 is connected to one end of the resistor R20, the other end of the resistor R20 is connected to the cathode, and the two ends of the resistor R20 are connected in parallel with a capacitor C19.

4. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The data storage circuit includes a data storage chip U5, and the first pin, the second pin, the fifth pin and the sixth pin of the data storage chip U5 are respectively connected to the 33rd pin, the 35th pin, the 36th pin and the 34th pin of the single chip computer U3.

1.

5. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The serial port screen & printer interface circuit includes a 232 communication chip IC1, a plug-in JP2 and a plug-in JP3. Pins 9, 10, 11 and 12 of the 232 communication chip IC1 are respectively connected to pins 52, 51, 16 and 17 of the single-chip computer U3.1, pins 13 and 14 of the 232 communication chip IC1 are respectively connected to pins 2 and 3 of the plug-in JP2, and pins 7 and 8 of the 232 communication chip IC1 are respectively connected to pins 4 and 5 of the plug-in JP3.

6. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The current loop circuit includes a signal isolation chip U8, a resistor R4, and an NPN transistor Q4. Pin 2 of the signal isolation chip U8 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the collector of the NPN transistor Q4, the base of the NPN transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is connected to pin 42 of the microcontroller U3.1, and the emitter of the NPN transistor Q4 is connected to the cathode.

7. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The RS485 communication circuit comprises a 485 communication chip IC2, and pin 1 and pin 4 of the 485 communication chip IC2 are respectively connected to pin 53 and pin 54 of the single chip computer U3.

1.

8. The single-chip industrial weighing data processing system according to claim 1 is characterized in that: The LORA communication circuit includes a LORA wireless communication chip U4, and pins 1, 2, 3 and 4 of the LORA wireless communication chip U4 are respectively connected to pins 59, 58, 29 and 30 of the single-chip microcomputer U3.

1.

9. A single-chip industrial weighing data processing system according to any one of claims 1, 7 or 8, characterized in that: The USB module circuit includes a USB chip U1 and USB1, wherein pins 13, 14, 15 and 16 of the USB chip U1 are respectively connected to pins 20, 21, 22 and 23 of the microcontroller U3.1, and pins 2 and 3 of USB1 are respectively connected to pins 9 and 8 of the USB chip U1.

Images