CN221126893U - Digital display voltage power supply protector - Google Patents
Digital display voltage power supply protector Download PDFInfo
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- CN221126893U CN221126893U CN202322361383.2U CN202322361383U CN221126893U CN 221126893 U CN221126893 U CN 221126893U CN 202322361383 U CN202322361383 U CN 202322361383U CN 221126893 U CN221126893 U CN 221126893U
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- 230000001012 protector Effects 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000005070 sampling Methods 0.000 claims description 7
- 238000000819 phase cycle Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a digital display voltage power supply protector, comprising: the circuit board I is provided with a main chip singlechip, a driving module, a nixie tube and a switching module I; the output end of the main chip singlechip is connected with the input end of the driving module; the input end of the nixie tube is connected with the output end of the driving module; the circuit board II is provided with a power module, a voltage acquisition module, a relay, a switching module II and an external connection module, wherein the output ends of the power module and the voltage acquisition module on the circuit board II are connected with the corresponding input ends of the main chip singlechip through the switching module II and the switching module I on the circuit board I; the input end of the relay is connected with the output end of the driving module through the switching module II; the output end of the relay is connected with an external connection module. The utility model integrates the functions of voltage display, overvoltage and undervoltage protection, phase-failure protection, phase sequence protection and the like, and displays the integrated functions through the nixie tube, thereby having the characteristics of simple operation, high reliability and the like.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to a digital display voltage power supply protector.
Background
At present, various electric equipment is widely applied in various industries, whether factories or families, but in most of use places, a plurality of electric equipment is in a state without monitoring protection, only a pointer voltmeter is partially installed for manual monitoring, the voltage of the commercial power is frequently fluctuated in many times, and the fluctuation amplitude exceeds the technical requirements of the electric equipment sometimes, so that the use safety and the service life of the equipment are not adversely affected, the existing pointer voltmeter does not have an effective protection function for the electric equipment when the commercial power is too high or too low, and the normal work of related equipment is affected, and the use safety and the service life of the electric equipment are seriously affected.
The detection range of partial power supply protectors on the market is smaller, the power line of the product is a voltage detection point, the power line is limited by the power range, the AC can only be detected and displayed to be 380V plus or minus 15 percent, the voltage of a1 phase line can only be detected, and the functions of overvoltage, undervoltage, phase loss, phase sequence protection and the like are not carried out.
Disclosure of utility model
Therefore, the technical problem to be solved by the utility model is that the defects in the prior art exist, and the utility model provides the digital display voltage power supply protector which integrates the functions of voltage display, overvoltage and undervoltage protection, phase-failure protection, phase sequence protection and the like, is displayed by a nixie tube, has the characteristics of simple operation, high reliability and the like, and can be widely applied to various low-voltage electrical appliance control systems.
In order to solve the technical problems, the present utility model provides a digital display voltage power supply protector, comprising:
The circuit board I is provided with a main chip singlechip, a driving module, a nixie tube and a switching module I; the output end of the main chip singlechip is connected with the input end of the driving module; the input end of the nixie tube is connected with the output end of the driving module;
The circuit board II is provided with a power module, a voltage acquisition module, a relay, a switching module II and an external connection module, wherein the output ends of the power module and the voltage acquisition module on the circuit board II are connected with the corresponding input ends of the main chip singlechip through the switching module II and the switching module I on the circuit board I; the input end of the relay is connected with the output end of the driving module through the switching module II; and the output end of the relay is connected with an external connection module.
In one embodiment of the utility model, the voltage acquisition module comprises a first resistor, a voltage transformer, a second resistor, a filter capacitor, a third resistor and a fourth resistor, wherein the input end of the voltage transformer is connected with the first resistor, the output end of the voltage transformer is connected with the second resistor and the filter capacitor in parallel, the third resistor is connected with the filter capacitor, and the fourth resistor is connected with the third resistor.
In one embodiment of the utility model, the voltage transformer is ZMPT107,107.
In one embodiment of the utility model, the model of the master chip singlechip is STM32F030C8T6.
In one embodiment of the utility model, the second circuit board is further provided with a buzzer module, and the buzzer module is connected with the output end of the main chip singlechip through the first switching module and the second switching module.
In one embodiment of the utility model, the buzzer module comprises a buzzer and a filter capacitor, wherein the filter capacitor and the buzzer are arranged in parallel.
In one embodiment of the present utility model, the output end of the voltage acquisition module is further provided with a sampling circuit module in parallel. The sampling circuit module plays a role in filtering and ensures the stability of the circuit.
In one embodiment of the utility model, the first circuit board is also provided with a key module, the output end of the key module is connected with the corresponding input end of the main chip singlechip,
In one embodiment of the utility model, filter capacitors are connected between VDDA and VSSA pins and between VDD-1 and VSS-1 pins of the main chip singlechip.
In one embodiment of the utility model, the drive module includes an integrated darlington tube I C, model number ULN2003 of integrated darlington tube I C.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
The digital display voltage power supply protector integrates the functions of voltage display, overvoltage and undervoltage protection, phase-defect protection, phase sequence protection and the like, and meets the condition that the AC detection range is 0-1000V; the fault code can be displayed through the nixie tube, and the method has the characteristics of simplicity and convenience in operation, high reliability and the like, and can be widely applied to various low-voltage electrical appliance control systems.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a block diagram of the overall structure of a power supply protector in a preferred embodiment of the present utility model;
FIG. 2 is a schematic diagram of a master chip microcomputer of the power supply protector shown in FIG. 1;
FIG. 3 is a circuit diagram of a voltage acquisition module of the power supply protector shown in FIG. 1;
FIG. 4 is a circuit diagram of a power module of the power protector shown in FIG. 1;
FIG. 5 is a block diagram of a first switch module of the power protector of FIG. 1;
FIG. 6 is a block diagram of a second switch module of the power protector shown in FIG. 1;
FIG. 7 is a block diagram of an external connection module of the power supply protector shown in FIG. 1;
FIG. 8 is a circuit diagram of a buzzer circuit of the digital display voltage power supply protector shown in FIG. 1;
FIG. 9 is a circuit diagram of a driving module of the digital display voltage power supply protector shown in FIG. 1;
FIG. 10 is a circuit diagram of a sampling circuit module of the digital display voltage power supply protector shown in FIG. 1;
fig. 11 is a circuit diagram of a relay of the power supply protector shown in fig. 1.
Description of the specification reference numerals: 100. a first circuit board; 1. the device comprises a main chip singlechip, 2, a driving module, 3 and a nixie tube; 4. a first switching module; 200. a second circuit board; 5. the power supply module, 6, the voltage acquisition module, 7, the relay, 8 and the switching module II; 9. an external connection module; 10. a buzzer module; 11. a key module; 12. and a sampling circuit module.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1, a digital display voltage power supply protector of the present utility model includes: the circuit board I100 is provided with a main chip singlechip 1, a driving module 2, a nixie tube 3 and a switching module I4; the output end of the main chip singlechip 1 is connected with the input end of the driving module 2; the input end of the nixie tube 3 is connected with the output end of the driving module 2; the circuit board II 200 is provided with a power module 5, a voltage acquisition module 6, a relay 7, a switching module II 8 and an external connection module 9, wherein the output ends of the power module 5 and the voltage acquisition module 6 on the circuit board II 200 are connected with the corresponding input ends of the main chip singlechip 1 through the switching module II 8 and the switching module I4 on the circuit board I100; the input end of the relay 7 is connected with the output end of the driving module 2 through the switching module II 8; the output end of the relay 7 is connected with an external connection module 9. As shown in fig. 11, the relay 7 includes 2 groups, and the relay 7 outputs are opened when the instrument is in normal operation, and are correspondingly closed when the instrument is in an overvoltage/undervoltage fault state.
As shown in fig. 3, the voltage acquisition module 6 includes a first resistor, a voltage transformer, a second resistor, a filter capacitor, a third resistor and a fourth resistor, the input end of the voltage transformer is connected with the first resistor, the output end of the voltage transformer is parallel connected with the second resistor and the filter capacitor, the third resistor is connected with the filter capacitor, and the fourth resistor is connected with the third resistor. The voltage acquisition module 6 can convert the high voltage into low voltage which can be acquired by the main chip singlechip 1 through a voltage transformer and a peripheral resistor,
In this embodiment, the AC design measurement range is 0-1000V, and the actual voltage is a sine wave due to the AC, and the maximum peak 1414V corresponds to the design AC upper limit of 1000V. The resistance 1M of the first resistor in the voltage acquisition module gives a current = U/R,1414 +.100000 = 1.414mA. In the embodiment, the voltage transformer is 2mA/2mA, so the secondary of the voltage transformer is also 1.414mA; obtaining an alternating voltage with a peak value of 0.792V at a second resistor of 560 omega; finally, the voltage condition of the AD0 point is required to be acquired by the master control chip singlechip 1, and the condition that only half waves can be acquired can be generated if the voltage condition is directly acquired; for more accurate acquisition, a third resistor and a fourth resistor with the resistance value of 30K are added on the circuit, and the reference point direct current voltage is raised to 30.56/60.56 ×3.3=1.665V; then the alternating voltage converted before is overlapped, so that the full wave, namely 1.665V plus or minus 0.792V, can be acquired. Based on the principle, the real input voltage is reversely pushed out by the master control chip single chip 1 through the collected voltage condition, and then the real input voltage is displayed by the nixie tube 3.
If the voltage acquisition module 6 is adopted as voltage acquisition input and is powered by a power circuit, the maximum voltage can only float 10 percent, namely 418V, even if a 380V transformer is adopted; too low, which affects the power supply, does not work properly, so this design is only suitable for a normal voltage of 380V. In this embodiment, the voltage acquisition module 6 is used for acquiring voltage input, the power supply module 5 is used for supplying power, A, B, C on the voltage acquisition module 6 is an input end for three-phase voltage acquisition, L, N of the power supply module 5 is a power supply circuit for supplying power, as shown in fig. 4; the A, B, C on the voltage acquisition module 6 and the L, N on the power module 5 are respectively connected with corresponding pins on the external connection module 9, and the external switching module 9 is shown in fig. 7; in this embodiment, the power module 5 is independently powered and does not affect the voltage acquisition module 6, so that the voltage acquisition module 6 can realize an AC measurement range of 0-1000V.
Preferably, the voltage transformer is ZMPT107,107.
As shown in FIG. 2, the model of the main chip singlechip 1 is STM32F030C8T6.
As a further improvement of the utility model, the circuit board II 200 is also provided with a buzzer module 10, and the buzzer module 10 is connected with the output end of the main chip singlechip through the switching module I4 and the switching module II 8. The first switching module 4 is shown in fig. 5, and the second switching module 8 is shown in fig. 6.
As shown in fig. 8, the buzzer module 10 includes a buzzer and a filter capacitor, and the filter capacitor and the buzzer are disposed in parallel. When the power supply is over-voltage or under-voltage, the nixie tube 3 displays a corresponding fault code, the buzzer alarms, the output contact of the alarm relay 7 is closed, and when the faults of power supply phase failure, phase sequence and the like occur, the nixie tube 3 displays a corresponding fault code, and the buzzer alarms.
As a further improvement of the present utility model, as shown in fig. 10, the output end of the voltage acquisition module 6 is further provided with a sampling circuit module 12 in parallel. The sampling circuit module 12 plays a role of filtering, and ensures the stability of the circuit.
Preferably, the first circuit board 100 is further provided with a key module 11, and an output end of the key module 11 is connected with a corresponding input end of the main chip singlechip 1.
As a further improvement of the utility model, filter capacitors are connected between the VDDA and VSSA pins and between the VDD-1 and VSS-1 pins of the main chip singlechip 1.
As shown in fig. 9, the driving module 2 includes an integrated darlington tube I C, and the model number of the integrated darlington tube I C is ULN2003.
During operation, the voltage acquisition module 6 transmits detected power supply information to the main chip singlechip 1 through the switching module II 8 and the switching module I4, the main chip singlechip 1 receives and processes voltage data transmitted by the voltage acquisition module 6, the conditions of over-voltage, under-voltage, phase-failure and phase sequence are judged through calculation and analysis of the main chip singlechip 1, then the driving module 2 is controlled to drive the relay 7 and the nixie tube 3 to work according to the processed results, when the power supply is over-voltage and under-voltage, the nixie tube 3 displays corresponding fault codes, the buzzer alarms, the relay 7 outputs a contact to be closed, and when faults such as power supply phase failure and phase sequence occur, the nixie tube 3 displays corresponding fault codes, and the buzzer alarms.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A digital display voltage power supply protector is characterized in that: comprising the following steps:
The circuit board I is provided with a main chip singlechip, a driving module, a nixie tube and a switching module I; the output end of the main chip singlechip is connected with the input end of the driving module; the input end of the nixie tube is connected with the output end of the driving module;
The circuit board II is provided with a power module, a voltage acquisition module, a relay, a switching module II and an external connection module, wherein the output ends of the power module and the voltage acquisition module on the circuit board II are connected with the corresponding input ends of the main chip singlechip through the switching module II and the switching module I on the circuit board I; the input end of the relay is connected with the output end of the driving module through the switching module II; and the output end of the relay is connected with an external connection module.
2. The digital display voltage power supply protector according to claim 1, wherein: the voltage acquisition module comprises a first resistor, a voltage transformer, a second resistor, a filter capacitor, a third resistor and a fourth resistor, wherein the input end of the voltage transformer is connected with the first resistor, the output end of the voltage transformer is connected with the second resistor and the filter capacitor in parallel, the third resistor is connected with the filter capacitor, and the fourth resistor is connected with the third resistor.
3. The digital display voltage power supply protector according to claim 2, wherein: the voltage transformer is ZMPT to 107 in type.
4. The digital display voltage power supply protector according to claim 1, wherein: the model of the main chip singlechip is STM32F030C8T6.
5. The digital display voltage power supply protector according to claim 1, wherein: and the circuit board II is also provided with a buzzer module, and the buzzer module is connected with the output end of the main chip singlechip through the switching module I and the switching module II.
6. The digital display voltage power supply protector according to claim 5, wherein: the buzzer module comprises a buzzer and a filter capacitor, and the filter capacitor and the buzzer are arranged in parallel.
7. The digital display voltage power supply protector according to claim 1, wherein: and the output end of the voltage acquisition module is also provided with a sampling circuit module in parallel.
8. The digital display voltage power supply protector according to claim 1, wherein: and a key module is further arranged on the first circuit board, and the output end of the key module is connected with the corresponding input end of the main chip singlechip.
9. The digital display voltage power supply protector according to claim 1, wherein: filter capacitors are connected between VDDA and VSSA pins and between VDD-1 and VSS-1 pins of the main chip singlechip.
10. The digital display voltage power supply protector according to claim 1, wherein: the driving module comprises an integrated darlington tube IC, and the model of the integrated darlington tube IC is ULN2003.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361383.2U CN221126893U (en) | 2023-08-31 | 2023-08-31 | Digital display voltage power supply protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361383.2U CN221126893U (en) | 2023-08-31 | 2023-08-31 | Digital display voltage power supply protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221126893U true CN221126893U (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322361383.2U Active CN221126893U (en) | 2023-08-31 | 2023-08-31 | Digital display voltage power supply protector |
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| Country | Link |
|---|---|
| CN (1) | CN221126893U (en) |
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2023
- 2023-08-31 CN CN202322361383.2U patent/CN221126893U/en active Active
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