Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01G—WEIGHING
  • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
  • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
  • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01G—WEIGHING
  • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
  • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
  • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
  • G01G3/142—Circuits specially adapted therefor
  • G01G3/147—Circuits specially adapted therefor involving digital counting
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01G—WEIGHING
  • G01G23/00—Auxiliary devices for weighing apparatus

Definitions

• the utility model relates to a weighing technology device, in particular to a weighing sensor with an IP address.
• the load cell used in China is composed of a metal elastomer and a strain gauge.
• the metal elastomer When it is subjected to pressure or weight, the metal elastomer is deformed, and the strain gauge outputs an analog electrical signal.
• the analog electrical signal is anti-jamming. Poor capacity, it is not convenient to detect the condition of each sensor; Digital load cell outputting RS232 serial interface signal has low transmission speed, inconvenient combination, low weighing accuracy, especially not suitable for weighing under dynamic and high speed conditions.
• the object of the present invention is to overcome the above problems and to provide a weighing sensor having an IP address with high weighing accuracy.
• the weighing sensor with an IP address includes a power source and a load cell, and the power source is a bridge power source and a power source; the weighing sensor further includes An IP conversion board or converter box that converts the analog signal output from the load cell into a digital signal, which is connected in series by a power supply and a load cell, an IP conversion board, or a conversion box.
• the IP conversion board or conversion box includes an operational amplifier, a converter, a logic controller, an Mcu microcontroller or a DSP digital signal processor, a program memory, and an Ethernet network with an IP address connected to a computer or Ethernet dedicated weighing instrument. a controller, the sensor signal output end is connected to a signal input end of the operational amplifier, and the operational amplifier passes through
• the A/D converter is connected to the Mcu microcontroller or the DSP digital signal processor, the Ethernet controller, the logic controller and the program memory, wherein the operational amplifier of the operational amplifier is composed of a 12V power supply, an INA128 chip, and a resistor R19. consist of.
• the load cell is a resistance strain sensor, which consists of two strain resistors and two equivalent resistors.
• the first leg is connected to the positive pole of the power supply, and the second leg is the second of the INA128 of the operational amplifier chip. Pin connected, pin 3 grounded, pin 4 and op amp The third leg of the chip INA128 is connected.
• the load cell with IP address of the utility model can remotely inspect and correct parameters. Angle and calibration can be tested and corrected during verification and use. During maintenance, the original parameters of the load cell with IP address are input through the Ethernet network to ensure that the electronic weighing instrument's overall weighing data is unchanged.
• a set of weighing software is provided by the manufacturer, and the user can combine the weighing sensors with IP addresses into various electronic weighing instruments.
• the IP conversion board that can convert the analog signal of the load cell into an Ethernet signal is assembled in the load cell.
• the analog signal output by the load cell can be output. It is transmitted to the IP conversion box through the cable and converted into an Ethernet signal output.
• the load cell with IP address of the utility model has strong anti-interference ability, high weighing precision, fast transmission speed, convenient detection of the condition of each sensor, and is suitable for weighing under static, operational and high-speed conditions.
• 1 is a block diagram of an electrical device of the present invention having a load cell with an IP address.
• 2 is a circuit diagram of a load cell with an IP address of the present invention.
• Fig. 3 is an operational amplifier circuit diagram of the load cell having the ⁇ address of the present invention.
• Fig. 4 is a diagram showing an A/D conversion circuit of a load cell having an IP address of the present invention.
• Figure 5 is a circuit diagram of a logic controller of a load cell with an IP address of the present invention.
• FIG. 6 is a circuit diagram of an Mcu microcontroller or a DSP digital signal processor of the present invention having a load cell with an IP address.
• Figure 7 is a circuit diagram of a program memory of a load cell having an IP address of the present invention.
• FIG. 8 is a circuit diagram of an Ethernet network controller with an IP address connected to a computer or Ethernet dedicated weighing instrument with an IP address load cell of the present invention.
• FIG. 9 is a schematic view of a bridge structure of a load cell with an IP address of the present invention.
• FIG. 10 is a schematic view showing the column structure of the load cell with an IP address of the present invention.
• 11 is a schematic view showing the plug-in structure of the load cell with an IP address of the present invention.
• the load cell with an IP address of the present invention includes a power source 1 and a load cell 2, and the power source 1 is a bridge power source and a power supply source; the weighing sensor further includes a The IP conversion board or the conversion box 3 that converts the analog signal output from the load cell 2 into a digital signal is serially connected in series by the power source 1 and the load cell 2, the IP conversion board, or the converter box 3.
• the IP conversion board or converter box 3 includes an operational amplifier 4, an A/D converter 5, a logic controller 6, a Mcu microcontroller or a DSP digital signal processor 7, a program memory 8, and a computer or Ethernet dedicated weighing.
• An Ethernet network controller 9 having an IP address connected to the meter, the signal output end of the sensor 2 is connected to a signal input end of the operational amplifier 4, and the operational amplifier 4 is then passed through an A/D converter 5 and a Mcu microcontroller or DSP.
• the digital signal processor 7, the Ethernet controller 9, the logic controller 6, and the program memory 8 are connected, wherein the operational amplifier circuit of the operational amplifier 4 is composed of a 12V power supply, an INA128 chip, and a resistor R19.
• the load cell 2 is a resistance strain sensor, which consists of two strain resistors and two equivalent resistors.
• the first leg is connected to the positive pole of the power supply 1
• the second leg is The second pin of the chip INA128 of the operational amplifier 4 is connected
• the third leg is grounded
• the fourth leg is connected to the third pin of the chip INA128 of the operational amplifier 4.
• the seventh pin of the INA128 of the operational amplifier 4 is connected to the positive pole of the 12V power supply, the fourth leg is connected to the negative pole of the 12V power supply, the first leg and the eighth pin are connected in parallel with the R19, and the second leg is called The second leg of the weight sensor 2 is connected, the third leg is connected to the fourth leg of the load cell 2, the fifth leg is grounded, and the sixth leg is connected to R1 and then to the 9th pin of the A/D converter 5.
• the conversion circuit of the A/D converter 5 is composed of an A/D converter 5, a resistor R1, and a capacitor C1.
• the 9th pin of the A/D converter 5 is connected in series with the resistor R1.
• the 6th pin of the chip INA128 of the operational amplifier 4 is connected, the signal is grounded after the pin 9 is connected to the capacitor C1, and the 19th pin is connected to the 35th pin of the logic controller 6, the 20th pin and the logic control
• the 36th leg of the device 6 is connected.
• the logic controller 6 is a PLD device
• the 35th pin of the PLD is connected to the 19th pin of the A/D converter 5
• the 36th pin and the 20th pin of the A/D converter (5) The foot is connected
• the 50th pin is connected to the positive pole of the power source 1
• the 25th pin is grounded
• the 78th pin is connected to the 108th pin of the digital signal processor 7.
• the digital signal processor 7 is a Mcu microcontroller or a DSP digital signal processor.
• the digital signal processing circuit is composed of a Mcu microcontroller or a DSP digital signal processor and a power supply 1.
• Mcu micro control The 11th pin of the DSP or DSP digital signal processor 7 is connected to the 5th pin of the program memory 8, the 13th pin is connected to the positive terminal of the power supply 1, the 14th pin is connected to the 8th pin of the program memory 8, and the 12th pin is grounded,
• the 4, 5, 6, and 7 legs are respectively connected to the first, second, third, and sixth legs of the Ethernet controller 9 having an IP address connected to a computer or an Ethernet dedicated weighing instrument.
• the program storage circuit of the program memory 8 is composed of a program memory 8 and a power supply 1.
• the 6th pin of the program memory 8 is connected to the positive pole of the power supply 1, the 7th pin is grounded, and the 5th pin and the Mcu are connected.
• the 11th pin of the microcontroller or DSP digital signal processor 7 is connected, and the 8th pin is connected to the Mcu microcontroller or the 14th pin of the DPS digital signal processor 7.
• the first, second, third, and sixth legs of the Ethernet controller 9 having the IP address are connected to the fourth, fifth, sixth, and seventh legs of the digital signal processor 7, respectively.
• the IP conversion board 3 is assembled in the bridge type and column type load cell 2, respectively. As shown in Fig. 11, the IP conversion box 3 can also be connected to the load cell 2 via the cable 14. It is then connected to a computer or Ethernet dedicated weighing instrument.
• the load cell with IP address of the utility model is composed of the power source 1, the load cell 2 and the IP conversion board 3 or the IP conversion box 3, and the working process is as follows: When the load cell with the IP address is subjected to the weight or At the time of pressure, the analog electric signal is output through the metal elastic body 10 and the resistance strain gauge 11, and the analog electric signal is output to the second and third legs of the operational amplifier 4 via the second and fourth pins, and amplified by the operational amplifier 4, and then passed through the sixth pin.
• the output is converted to a digital signal by the A/D analog-to-digital converter 5, which is output to the 35th and 36th legs of the logic controller 6 by the 19th and 20th pins of the A/D analog-to-digital converter 5, and the logic controller 6 is in the Mcu micro
• the output from the 78th pin enters the 108th pin of the DSP digital signal processor 7, and the DSP digital signal processor 7 executes the instruction of the program memory 8 to pass the data.
• the Ethernet controller 9 outputs an Ethernet signal and sends it to a computer or Ethernet dedicated weighing instrument.
• the load cell with IP address of the utility model can remotely inspect and correct parameters. Angle and calibration can be tested and corrected during verification and use. During maintenance, the original parameters of the load cell with IP address are input through the Ethernet network to ensure that the electronic weighing instrument's overall weighing data is unchanged.
• a set of weighing software is provided by the manufacturer, and the user can combine the weighing sensors with IP addresses into various electronic weighing instruments.
• the IP conversion board 3 which can convert the analog signal of the load cell 2 into an Ethernet signal, is assembled in the load cell 2, and when the volume of the load cell 2 is small, it can be called
• the analog signal output from the weight sensor 2 is transmitted through the cable 14 to the IP conversion box 3 to be converted into an Ethernet signal output.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Arrangements For Transmission Of Measured Signals (AREA)
• Measurement Of Force In General (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

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Family Applications (1)

Country Status (5)

Families Citing this family (2)

Citations (3)

• 2005
  • 2005-03-30 CN CNU200520033695XU patent/CN2746377Y/zh not_active Expired - Fee Related
• 2006
  • 2006-01-26 JP JP2008600004U patent/JP3143223U/ja not_active Expired - Fee Related
  • 2006-01-26 KR KR2020077000003U patent/KR200439307Y1/ko not_active IP Right Cessation
  • 2006-01-26 WO PCT/CN2006/000159 patent/WO2006102823A1/zh not_active Application Discontinuation
  • 2006-01-26 DE DE212006000009U patent/DE212006000009U1/de not_active Expired - Lifetime

Patent Citations (3)

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