CN216414179U - Bipolar DC/DC voltage stabilizing converter for automatic sewage detection system - Google Patents
Bipolar DC/DC voltage stabilizing converter for automatic sewage detection system Download PDFInfo
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- CN216414179U CN216414179U CN202122035482.2U CN202122035482U CN216414179U CN 216414179 U CN216414179 U CN 216414179U CN 202122035482 U CN202122035482 U CN 202122035482U CN 216414179 U CN216414179 U CN 216414179U
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Abstract
The utility model belongs to the field of automatic sewage detection systems, and particularly relates to a bipolar DC/DC voltage stabilizing converter for an automatic sewage detection system, which comprises a timing circuit and a DC/DC conversion circuit; a second resistor R2, a third resistor R3 and a fifth capacitor C5 of the timing circuit are sequentially connected in series between a power supply Vcc and a ground GND; NE555S time base integrated circuit: pin 1 is grounded GND, pin 2 and pin 6 are connected with the common ends of a third resistor R3 and a fifth capacitor C5, pin 7 is connected with the common ends of a second resistor R2 and a third resistor R3, pin 4 and pin 8 are connected with a power supply Vcc, and pin 3 is a time signal output end and is connected with one end of a first resistor R1. The beneficial effects that can be achieved are as follows: the circuit structure is simple, the fluctuation ratio can be controlled below 0.018, and the current 98.8% requirement on a high-precision sewage detection system can be met.
Description
Technical Field
The utility model belongs to the field of automatic sewage detection systems, and particularly relates to a bipolar DC/DC voltage-stabilizing conversion circuit for an automatic sewage detection system.
Background
Sewage detection has been implemented using automated inspection systems to achieve automated detection of sewage. For a detection system, accurate detection (measurement) of each detection index of sewage can be stably provided, which needs to be ensured, so that the fairness and the reliability of a detection result cannot be effectively ensured in time.
In the aspect of determining the stability of the automatic sewage detection system, the voltage stabilizing converter has a large influence on the automatic sewage detection system. The fluctuation ratio of the voltage stabilizing converter adopted by the automatic sewage detection system in the prior art can be controlled to be 0.03, and the ratio is too high and unacceptable for a detection system with high precision requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a bipolar DC/DC voltage stabilizing converter for an automatic sewage detection system, which comprises a timing circuit and a DC/DC conversion circuit. The output end of the timing circuit is connected with the time signal input end of the DC/DC conversion circuit.
The timing circuit comprises an NE555S time-base integrated circuit, a first resistor R1 with the resistance value of 1K, a second resistor R2 with the resistance value of 4.7K, a third resistor R3 with the resistance value of 3.3K and a fifth capacitor C5 with the capacitance value of 1000 pF.
The second resistor R2, the third resistor R3 and the fifth capacitor C5 are sequentially connected in series between a power supply Vcc and a ground GND. The NE555S time base integrated circuit: pin 1 is grounded GND, pin 2 and pin 6 are connected with the common ends of a third resistor R3 and a fifth capacitor C5, pin 7 is connected with the common ends of a second resistor R2 and a third resistor R3, pin 4 and pin 8 are connected with a power supply Vcc, and pin 3 is a time signal output end and is connected with one end of a first resistor R1.
Further, the DC/DC conversion circuit includes a conversion input circuit and a conversion output circuit.
The conversion input circuit described above includes: the circuit comprises a first capacitor C1 with the capacitance value of 10 muF, a second capacitor C2 with the capacitance value of 10 muF, a first diode D1, a first three-terminal voltage regulator W1 and a transformer T. The first three-terminal regulator W1: pin 3 is grounded to GND, pin 1 is grounded to GND through a second capacitor C2, and pin 2 is connected to the positive terminal of a first diode D1 and is grounded to GND through a first capacitor C1. The transformer T has the following structure: two ports of the input end are respectively connected with the cathode end of the first diode D1 and the ground GND, and one port of the output end is connected with the power supply Vcc;
the conversion output circuit described above includes: a third capacitor C3 with the capacitance value of 10 muF, a fourth capacitor C4 with the capacitance value of 10 muF, a second diode D2, a second three-terminal regulator W2 and a transistor VT. The second three-terminal regulator W2: pin 3 is grounded to GND, pin 2 is grounded to GND through a fourth capacitor C4, and pin 1 is connected to the cathode terminal of the second diode D2 and is grounded to GND through a third capacitor C3. Of said transistor VT: the gate is connected to the other end of the first resistor R1, the source is grounded GND, and the drain is connected to the other port of the output terminal of the transformer T and the positive terminal of the second diode D2.
Furthermore, the first three-terminal regulator W1 is a 79L12 type three-terminal regulator.
As a preferable scheme: the model of the first three-terminal regulator W1 is a 79L12 three-terminal regulator, the model of the second three-terminal regulator W2 is a 78L12 three-terminal regulator, and the transistor VT is an NPN transistor.
The utility model has the beneficial effects that: the circuit structure is simple, and through testing, the voltage stabilizing converter of this scheme can make its fluctuation ratio control below 0.018, can satisfy present 98.8% to the requirement of high accuracy sewage detection system.
Drawings
The utility model will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a block diagram of a bipolar DC/DC regulator converter according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the bipolar DC/DC voltage regulator converter of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a block diagram showing the structure of a bipolar DC/DC voltage regulator converter according to the present invention. The utility model discloses a bipolar DC/DC voltage stabilizing converter for an automatic sewage detection system. The output end of the timing circuit is connected with the time signal input end of the DC/DC conversion circuit.
Fig. 2 is a schematic circuit diagram of an embodiment of the bipolar DC/DC regulator converter of the present invention, and a scheme of the embodiment of the regulator converter will be described in detail below with reference to the schematic circuit diagram.
With reference to fig. 1 and fig. 2, the timing circuit includes a NE555S time base integrated circuit, a first resistor R1 with a resistance of 1K, a second resistor R2 with a resistance of 4.7K, a third resistor R3 with a resistance of 3.3K, and a fifth capacitor C5 with a capacitance of 1000 pF.
The second resistor R2, the third resistor R3 and the fifth capacitor C5 are sequentially connected in series between a power supply Vcc and a ground GND. The NE555S time base integrated circuit: pin 1 is grounded GND, pin 2 and pin 6 are connected with the common ends of a third resistor R3 and a fifth capacitor C5, pin 7 is connected with the common ends of a second resistor R2 and a third resistor R3, pin 4 and pin 8 are connected with a power supply Vcc, and pin 3 is a time signal output end and is connected with one end of a first resistor R1.
Further, the DC/DC conversion circuit includes a conversion input circuit and a conversion output circuit.
The conversion input circuit described above includes: the circuit comprises a first capacitor C1 with the capacitance value of 10 muF, a second capacitor C2 with the capacitance value of 10 muF, a first diode D1, a first three-terminal voltage regulator W1 and a transformer T. The first three-terminal regulator W1: pin 3 is grounded to GND, pin 1 is grounded to GND through a second capacitor C2, and pin 2 is connected to the positive terminal of a first diode D1 and is grounded to GND through a first capacitor C1. The transformer T has the following structure: two ports of the input end are respectively connected with the cathode end of the first diode D1 and the ground GND, and one port of the output end is connected with the power supply Vcc; in the embodiment, the model of the first three-terminal regulator W1 is 79L 12.
The conversion output circuit described above includes: a third capacitor C3 with the capacitance value of 10 muF, a fourth capacitor C4 with the capacitance value of 10 muF, a second diode D2, a second three-terminal regulator W2 and a transistor VT. The second three-terminal regulator W2: pin 3 is grounded to GND, pin 2 is grounded to GND through a fourth capacitor C4, and pin 1 is connected to the cathode terminal of the second diode D2 and is grounded to GND through a third capacitor C3. Of said transistor VT: the grid electrode of the first resistor R1 is connected with the other end of the first resistor R1, the source electrode of the first resistor R1 is grounded GND, and the drain electrode of the first resistor R1 is connected with the other port of the output end of the transformer T and the positive electrode end of the second diode D2; in this embodiment, the second three-terminal regulator W2 is a model 78L12 three-terminal regulator.
As a preferred solution to the above embodiment: the transistor VT is an NPN transistor.
Through tests, the voltage stabilizing converter of the embodiment can control the fluctuation ratio to be below 0.018, and can meet the current 98.8% requirement on a high-precision sewage detection system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A bipolar DC/DC voltage stabilizing converter for an automatic sewage detection system is characterized by comprising a timing circuit and a DC/DC conversion circuit; the output end of the timing circuit is connected with the time signal input end of the DC/DC conversion circuit;
the timing circuit comprises an NE555S time-base integrated circuit, a first resistor R1 with the resistance value of 1K, a second resistor R2 with the resistance value of 4.7K, a third resistor R3 with the resistance value of 3.3K and a fifth capacitor C5 with the capacitance value of 1000 pF; the second resistor R2, the third resistor R3 and the fifth capacitor C5 are sequentially connected in series between a power supply Vcc and a ground GND; NE555S time base integrated circuit: pin 1 is grounded GND, pin 2 and pin 6 are connected with the common ends of a third resistor R3 and a fifth capacitor C5, pin 7 is connected with the common ends of a second resistor R2 and a third resistor R3, pin 4 and pin 8 are connected with a power supply Vcc, and pin 3 is a time signal output end and is connected with one end of a first resistor R1.
2. The bipolar DC/DC voltage regulator for an automatic sewage detection system according to claim 1, wherein the DC/DC conversion circuit includes a conversion input circuit and a conversion output circuit;
the conversion input circuit includes: the circuit comprises a first capacitor C1 with the capacitance value of 10 muF, a second capacitor C2 with the capacitance value of 10 muF, a first diode D1, a first three-terminal voltage regulator W1 and a transformer T; of the first three terminal regulator W1: pin 3 is grounded to GND, pin 1 is grounded to GND through a second capacitor C2, and pin 2 is connected to the positive terminal of a first diode D1 and is grounded to GND through a first capacitor C1; of the transformer T: two ports of the input end are respectively connected with the cathode end of the first diode D1 and the ground GND, and one port of the output end is connected with the power supply Vcc;
the conversion output circuit includes: a third capacitor C3 with the capacitance value of 10 muF, a fourth capacitor C4 with the capacitance value of 10 muF, a second diode D2, a second three-terminal regulator W2 and a transistor VT; of the second three terminal regulator W2: pin 3 is grounded to GND, pin 2 is grounded to GND through a fourth capacitor C4, pin 1 is connected to the cathode terminal of the second diode D2 and is grounded to GND through a third capacitor C3; of the transistor VT: the gate is connected to the other end of the first resistor R1, the source is grounded GND, and the drain is connected to the other port of the output terminal of the transformer T and the positive terminal of the second diode D2.
3. The bipolar DC/DC voltage-stabilizing converter for automatic sewage detection system as claimed in claim 2, wherein the first three-terminal regulator W1 is a 79L12 type three-terminal regulator.
4. The bipolar DC/DC voltage-stabilizing converter for automatic sewage detection system as claimed in claim 2, wherein the second three-terminal regulator W2 is a 78L12 type three-terminal regulator.
5. The bipolar DC/DC voltage regulator converter for automatic sewage detection system according to claim 2, wherein the transistor VT is an NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035482.2U CN216414179U (en) | 2021-08-26 | 2021-08-26 | Bipolar DC/DC voltage stabilizing converter for automatic sewage detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035482.2U CN216414179U (en) | 2021-08-26 | 2021-08-26 | Bipolar DC/DC voltage stabilizing converter for automatic sewage detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216414179U true CN216414179U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122035482.2U Active CN216414179U (en) | 2021-08-26 | 2021-08-26 | Bipolar DC/DC voltage stabilizing converter for automatic sewage detection system |
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| Country | Link |
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| CN (1) | CN216414179U (en) |
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2021
- 2021-08-26 CN CN202122035482.2U patent/CN216414179U/en active Active
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