CN215866375U - Control circuit of copper ion concentration detector - Google Patents
Control circuit of copper ion concentration detector Download PDFInfo
- Publication number
- CN215866375U CN215866375U CN202121981018.6U CN202121981018U CN215866375U CN 215866375 U CN215866375 U CN 215866375U CN 202121981018 U CN202121981018 U CN 202121981018U CN 215866375 U CN215866375 U CN 215866375U
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- Prior art keywords
- pin
- resistor
- capacitor
- control circuit
- power supply
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- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001431 copper ion Inorganic materials 0.000 title claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 239000003381 stabilizer Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
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Abstract
The utility model belongs to a control circuit of a copper ion concentration detector, which comprises a power supply circuit and an MCU control circuit and is characterized in that a sensor signal processing circuit is arranged in the control circuit, wherein a pin 1 and a pin 2 of an LMV 324I operational amplifier U1A in the sensor signal processing circuit are connected with one end of a resistor R22, one end of a pin 3 is connected with one end of a resistor R50, one end of a pin 4 is connected with one end of a capacitor C44, the anode of an electrolytic capacitor E2 in the power supply circuit 1, a pin 4 of a DC24T5V voltage stabilizer M2, one end of a capacitor C41, a pin 3 of an LM1117-3.3 voltage stabilizer IC7, and a pin 8 of a MAX660 chip U5, the capacitor C44 and a resistor R23 are all grounded. The utility model discloses an equipment is simple, detect weak point consuming time, and applicable periodicity is short, the instantaneous detection demand, and easy operation is with low costs.
Description
Technical Field
The utility model belongs to a control circuit, and particularly relates to a control circuit of a copper ion concentration detector.
Background
Most of the existing detection devices adopt an atomic fluorescence photometry or a liquid chromatography to detect heavy metal ions, and mainly have the defects of large device specification, complex operation, long detection time consumption and high cost, and are difficult to adapt to the requirements of short periodicity and instant detection.
Disclosure of Invention
The utility model aims to overcome the technical defects, provides a sensor signal processing circuit arranged in a control circuit, and provides a novel control circuit for detecting the concentration of copper ions, which is designed based on the membrane electrode and the electrochemical reaction principle.
The technical scheme adopted by the utility model for solving the technical problem is as follows: a control circuit of a copper ion concentration detector comprises a power supply circuit and an MCU control circuit, and is characterized in that a sensor signal processing circuit is arranged in the control circuit, wherein pins 1 and 2 of an LMV 324I operational amplifier U1A in the sensor signal processing circuit are connected with one end of a resistor R22, one end of a resistor R50, one end of a capacitor C44, the anode of an electrolytic capacitor E2 in the power supply circuit, a pin 4 of a DC24T5V voltage stabilizer M2, one end of a capacitor C41, a pin 3 of a 111LM 7-3.3 voltage stabilizer IC7, one end of a pin 11 of a capacitor C45, one end of capacitors 58 and 59 in the power supply circuit, and a pin 5 and a-5V power supply of a MAX660 chip U5; the other end of the resistor R22 is connected with one end of a resistor R23 and 3 pins of an MSP430 singlechip U8 in the MCU control circuit; the other end of the resistor R23 is grounded; the capacitor C44 and the resistor R23 are both grounded; the pin 1 of the sensor P1 is grounded, and the pin 2 is connected with the other end of the resistor R50.
The utility model has the beneficial effects that: the utility model discloses an equipment is simple, detect weak point consuming time, and applicable periodicity is short, the instantaneous detection demand, and easy operation is with low costs.
Drawings
The following description is made in detail by way of example with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of a control circuit of the copper ion concentration detector.
In the figure: 1-a power supply circuit; 2-MCU control circuit; 3-sensor signal processing circuit.
Detailed Description
In the embodiment, referring to the attached drawings, a control circuit of a copper ion concentration detector comprises a power supply circuit 1 and an MCU control circuit 2, and is characterized in that a sensor signal processing circuit 3 is arranged in the control circuit, wherein a pin 1 and a pin 2 of an LMV 324I operational amplifier U1A in the sensor signal processing circuit 3 are connected with one end of a resistor R22, one end of a pin 3 is connected with one end of a resistor R50, one end of a pin 4 is connected with one end of a capacitor C44, the positive electrode of an electrolytic capacitor E2 in the power supply circuit 1, a pin 4 of a DC24T5V voltage stabilizer M2, one end of a capacitor C41 and a pin 3 of an LM1117-3.3 voltage stabilizer IC7, and a pin 11 is connected with one end of a capacitor C45 and one end of capacitors 58 and 59 in the power supply circuit 1, and a pin 5 and a-5V power supply of a MAX660 chip U5; the other end of the resistor R22 is connected with one end of a resistor R23 and the 3 pins of an MSP430 singlechip U8 in the MCU control circuit 2; the other end of the resistor R23 is grounded; the capacitor C44 and the resistor R23 are both grounded; the pin 1 of the sensor P1 is grounded, and the pin 2 is connected with the other end of the resistor R50.
The power supply circuit 1 comprises a pin 1 of a DC24T5V voltage stabilizer M2 connected with the anode of an electrolytic capacitor E1, a TVS diode TVS1, a ceramic chip capacitor VRS1 and one end of a fuse F1; 2. the 3-pin is connected with the fuse F1, the other end of the TVS diode TV51 and the cathodes of the electrolytic capacitors E1 and E2; the other end of the fuse F1 is connected with one end of a diode D2, and the other end of a diode D2 is connected with 24 IN; a pin 1 of the LM1117-3.3 voltage stabilizer IC7 is connected with one end of a capacitor C41 and the other ends of capacitors C42 and C3; pins 2 and 4 of a MAX660 chip U5 are respectively connected with two ends of a capacitor C57, and pins 3 and 6 are grounded; the other ends of the capacitors C58 and C59 are grounded.
The MCU control circuit 2 comprises an MSP430 singlechip U8 with a pin 2 grounded, a pin 4 and a pin 6 grounded with the other end of a resistor R28, a pin 11, a pin 10 and a pin 12 grounded with one ends of capacitors C33 and C34 and the ground, a pin 13 grounded with the other ends of capacitors C33 and C34 and a +3.3V power supply, a pin 14 grounded with one end of a capacitor C31, the other end of a capacitor C31 grounded, the other end of a pin 15 grounded with the other end of the resistor R31, one end of a capacitor C38 and a pin 1 of a socket, the other end of the capacitor C38 grounded, a pin 16 grounded with a pin 2 of the socket and a pin 33 grounded; 3 pins of the socket are grounded, and 4 pins of the socket are connected with a +3.3V power supply.
The utility model discloses a design principle: the measurement is to establish an electrochemical cell-a primary cell which can cause the membrane potential change in the measurement reaction, namely, the measurement is carried out by an external copper ion sensor, copper ions in the solution to be measured, a membrane electrode and a reference electrode (the components of the copper ion sensor) form the primary cell, the oxidation-reduction reaction is carried out to generate current, and the concentration value of the ions to be measured can be further calculated by measuring the potential difference between the two electrodes. The sensor signal processing circuit 3 amplifies and filters weak ion signals through an LMV 324I operational amplifier U1, transmits stable voltage signals to an MSP430 single chip microcomputer U8 for operation, the MSP430 single chip microcomputer U8 has the ultrahigh resolution of a 24-bit ADC, accurate measurement of ion concentration is achieved, the LCD Chinese interface is displayed, and operation is simpler and more convenient.
Claims (1)
1. A control circuit of a copper ion concentration detector comprises a power supply circuit (1) and an MCU control circuit (2), and is characterized in that a sensor signal processing circuit (3) is arranged in the control circuit, wherein a pin 1 and a pin 2 of an LMV 324I operational amplifier U1A in the sensor signal processing circuit (3) are connected with one end of a resistor R22, one end of a pin 3 is connected with one end of a resistor R50, one end of a pin 4 is connected with one end of a capacitor C44, the positive electrode of an electrolytic capacitor E2 in the power supply circuit (1), a pin 4 of a DC24T5V voltage stabilizer M2, one end of a capacitor C41 and a pin 3 of an LM1117-3.3 voltage stabilizer IC7, and a pin 11 is connected with one end of a capacitor C45 and one ends of capacitors 58 and 59 in the power supply circuit (1), a pin 5 of a MAX660 chip U5 and a power supply of-5V; the other end of the resistor R22 is connected with one end of a resistor R23 and 3 pins of an MSP430 singlechip U8 in the MCU control circuit (2); the other end of the resistor R23 is grounded; the capacitor C44 and the resistor R23 are both grounded; the pin 1 of the sensor P1 is grounded, and the pin 2 is connected with the other end of the resistor R50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121981018.6U CN215866375U (en) | 2021-08-22 | 2021-08-22 | Control circuit of copper ion concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121981018.6U CN215866375U (en) | 2021-08-22 | 2021-08-22 | Control circuit of copper ion concentration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215866375U true CN215866375U (en) | 2022-02-18 |
Family
ID=80241389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121981018.6U Expired - Fee Related CN215866375U (en) | 2021-08-22 | 2021-08-22 | Control circuit of copper ion concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215866375U (en) |
-
2021
- 2021-08-22 CN CN202121981018.6U patent/CN215866375U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |