CN108872693A - A kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure - Google Patents
A kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure Download PDFInfo
- Publication number
- CN108872693A CN108872693A CN201810615118.3A CN201810615118A CN108872693A CN 108872693 A CN108872693 A CN 108872693A CN 201810615118 A CN201810615118 A CN 201810615118A CN 108872693 A CN108872693 A CN 108872693A
- Authority
- CN
- China
- Prior art keywords
- chip microcontroller
- filter capacitor
- feet
- capacitor
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 67
- 239000013078 crystal Substances 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a kind of voltage detecting circuit based on electric resistance partial pressure and capacitor charge and discharge.The present invention includes a single-chip microcontroller, a crystal oscillator, an anti-reverse diode, a Voltagre regulator chip, three resistance, eight filter capacitors, a charge and discharge capacitance, a DC power supply.Power supply provides the power supply of 3.6V to 6V, and Voltagre regulator chip exports 3.3V.Single-chip microcontroller controls output pin PC0 and was changed into output 50 microsecond of low level by high level state for loop cycle with 1.5 seconds, and single-chip microcontroller reads the voltage value of PC2 foot by detection input pin PC2.Circuit design of the present invention is simple, saves the miniaturization that PCB surface product is conducive to equipment, reduces the cost of raw material；Detection time is short, can detect supply voltage within longest 1.5 seconds；Sampling time is extremely short, reduces equipment overall power, and the instrument that can promote disposable power supply uses the time 30%；Detection does not need to increase additional backup power source and Detection accuracy is high.
Description
Technical field
The invention belongs to instrument field of intelligent control technology, it is related to the voltage detecting based on capacitor charge and discharge and electric resistance partial pressure
Circuit.
Background technique
With microprocessor, the parallel development of artificial intelligence technology, this gives instrument and meter industry to intelligent development, also
It is the instrument and meter for saying intelligentized robot, the raising of level of intelligence and the speed that comparatively fast improves, this will allow people's lives
More easily.
The working environment of meter electronics product is usually relatively more severe, and it is outer to usually require that instrument master control borad can detect in time
Portion's supply voltage, while master control borad still can be carried out correlation function movement when outer power voltage is too low.Such as：Data are protected
Deposit, motor action, backup power source switching etc..
Currently, country's standard ununified to instrument industry.What each department gas company and Instrument Corporation did not unify
Scheme, each Instrument Corporation release the voltage detecting solution of oneself one after another.The scheme of current main-stream has electric resistance partial pressure AD inspection
Survey method, using voltage checking chip detection method etc., these schemes have such as the defects of power consumption is big, circuit is complicated, reliability is not high.
Therefore, the voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure is devised, low power consumption and low cost intelligence instrument is applied to,
It is high to solve the power consumption occurred in similar application, circuit complexity, the high problem of maintenance cost.
Summary of the invention
It is an object of the invention to provide the voltage detecting circuits based on capacitor charge and discharge and electric resistance partial pressure.
A kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure, including a single-chip microcontroller U2, a crystal oscillator
X1, an anti-reverse diode D1, Voltagre regulator chip U1, three resistance R, R2 and R3, a charge and discharge capacitance C1,
Eight filter capacitors C2-C9, a power supply P1.
The one end first resistor R1 is connected with the anode of the anode of power supply P1, diode D1, another termination of first resistor R1
One end of second resistance R2 and one end of charge and discharge capacitance C1, the other end of second resistance R2 connect 53 feet of single-chip microcontroller U2；Power supply
The cathode of P1 is grounded；The other end of charge and discharge capacitance C1 connects 57 foot of single-chip microcontroller；The cathode of diode D1 and the second filter capacitor C2
One end, Voltagre regulator chip U1 input pin connect；One end of third filter capacitor C3 and the 4th filter capacitor C4 are just
Pole, Voltagre regulator chip U1 output pin connection after be used as VCC power output end；The other end of second filter capacitor C2,
The grounding leg ground connection of the other end of three filter capacitor C3, the cathode of the 4th filter capacitor C4, Voltagre regulator chip U1；Crystal oscillator X1
One end 61 feet for being followed by single-chip microcontroller are connect with one end of the 5th filter capacitor C5；The other end of crystal oscillator X1 and the 6th filter capacitor
One end connection of C6 is followed by 60 feet of single-chip microcontroller；Another termination of the other end of 5th filter capacitor C5, the 6th filter capacitor C6
Ground；A termination VCC power output end of 3rd resistor R3, one end phase of the other end of 3rd resistor R3 and the 7th filter capacitor C7
Connection while 2 feet for meeting single-chip microcontroller U2, the other end ground connection of the 7th filter capacitor C7；One end of 8th filter capacitor C8, the 9th
One end of capacitor C9,11 feet of single-chip microcontroller U2,12 feet of single-chip microcontroller U2, single-chip microcontroller U2 13 feet be connected that be followed by VCC power supply defeated
Outlet；The other end of 8th filter capacitor C8, the other end of the 9th capacitor C9 are grounded；It is defeated that 29 feet of single-chip microcontroller U2 connect VCC power supply
Outlet, the 30 feet ground connection of single-chip microcontroller U2；
Single-chip microcontroller U2 uses model STM8R151L chip.
Voltagre regulator 1206B33, P1 are four section alkaline batteries.
The course of work of the present invention：
Power supply P1 provides the power supply of a 3.6V to 6V, exports 3.3V by Voltagre regulator chip U1.Single-chip microcontroller starts
After work, single-chip microcontroller control foot PC0 is set as open-drain output, is changed into output 50 microsecond of low level by high level state within every 1.5 seconds,
PC2 foot is set as the voltage value of floating input detection charge and discharge capacitance C1 simultaneously, and device was detected with 1.5 seconds for loop cycle.
When P1 has a power supply, and when PC0 output high level, since PC0 is open-drain output, PC0 is high-impedance state, resistance R2 with
The voltage of PC0 connecting place is supply voltage, and capacitor C1 both end voltage is 0V and supply voltage；When PC0 exports low level, resistance
R2 ground connection, since resistance R1 is to connect with R2, capacitor C1 both end voltage transition is the 1/2 of supply voltage, can be examined by PC2 foot
Measure supply voltage.
The present invention has the beneficial effect that：
Circuit design of the present invention is simple, saves the miniaturization that PCB surface product is conducive to equipment, reduces the cost of raw material；
Detection time is short, can detect supply voltage within longest 1.5 seconds；Sampling time is extremely short, reduces equipment overall power, can be promoted
The instrument of disposable power supply uses the time 30%；Detection does not need to increase additional backup power source and Detection accuracy is high.
Detailed description of the invention
Fig. 1 is the voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure in the present invention；
Fig. 2 is that foot level state schematic diagram is controlled in the present invention；
Fig. 3 is that foot level state schematic diagram is detected in the present invention；
Specific embodiment
For the technology contents that the present invention will be described in detail, construction features, the effect realized, below in conjunction with embodiment and match
Attached drawing is closed to be described in detail.
As shown in Figure 1-3, a kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure, including a single-chip microcontroller
U2, a crystal oscillator X1, an anti-reverse diode D1, Voltagre regulator chip a U1, three resistance R, R2 and R3, one fill
Discharge capacity C1, eight filter capacitors C2-C9, a power supply P1.
The one end first resistor R1 is connected with the anode of the anode of power supply P1, diode D1, another termination of first resistor R1
One end of second resistance R2 and one end of charge and discharge capacitance C1, the other end of second resistance R2 connect 53 feet of single-chip microcontroller U2；Power supply
The cathode of P1 is grounded；The other end of charge and discharge capacitance C1 connects 57 foot of single-chip microcontroller；The cathode of diode D1 and the second filter capacitor C2
One end, Voltagre regulator chip U1 input pin connect；One end of third filter capacitor C3 and the 4th filter capacitor C4 are just
Pole, Voltagre regulator chip U1 output pin connection after be used as VCC power output end；The other end of second filter capacitor C2,
The grounding leg ground connection of the other end of three filter capacitor C3, the cathode of the 4th filter capacitor C4, Voltagre regulator chip U1；Crystal oscillator X1
One end 61 feet for being followed by single-chip microcontroller are connect with one end of the 5th filter capacitor C5；The other end of crystal oscillator X1 and the 6th filter capacitor
One end connection of C6 is followed by 60 feet of single-chip microcontroller；Another termination of the other end of 5th filter capacitor C5, the 6th filter capacitor C6
Ground；A termination VCC power output end of 3rd resistor R3, one end phase of the other end of 3rd resistor R3 and the 7th filter capacitor C7
Connection while 2 feet for meeting single-chip microcontroller U2, the other end ground connection of the 7th filter capacitor C7；One end of 8th filter capacitor C8, the 9th
One end of capacitor C9,11 feet of single-chip microcontroller U2,12 feet of single-chip microcontroller U2, single-chip microcontroller U2 13 feet be connected that be followed by VCC power supply defeated
Outlet；The other end of 8th filter capacitor C8, the other end of the 9th capacitor C9 are grounded；It is defeated that 29 feet of single-chip microcontroller U2 connect VCC power supply
Outlet, the 30 feet ground connection of single-chip microcontroller U2；Single-chip microcontroller U2 uses model STM8R151L chip.
The course of work of the present invention is as follows：
As shown in Fig. 2, power supply P1 provides the power supply of a 3.6V to 6V, 3.3V is exported by Voltagre regulator chip U1.
After single-chip microcontroller is started to work, single-chip microcontroller control foot PC0 is set as open-drain output, and it is low by high level state to be changed into output within every 1.5 seconds
50 microsecond of level, while PC2 foot is set as the voltage value of floating input detection charge and discharge capacitance C1, device was followed with 1.5 seconds for the period
Ring detection.
As shown in figure 3, when P1 has power supply, and when PC0 output high level, since PC0 is open-drain output, PC0 is high resistant
The voltage of state, resistance R2 and PC0 connecting place is supply voltage, and capacitor C1 both end voltage is 0V and supply voltage；When PC0 output is low
When level, resistance R2 ground connection, since resistance R1 is to connect with R2, capacitor C1 both end voltage transition is the 1/2 of supply voltage, is passed through
PC2 foot can detect supply voltage.
Claims (1)
1. a kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure, it is characterised in that including a single-chip microcontroller U2,
One crystal oscillator X1, an anti-reverse diode D1, Voltagre regulator chip U1, three resistance R, R2 and R3, a charge and discharge
Capacitor C1, eight filter capacitors C2-C9, a power supply P1；
The one end first resistor R1 is connected with the anode of the anode of power supply P1, diode D1, another termination second of first resistor R1
One end of resistance R2 and one end of charge and discharge capacitance C1, the other end of second resistance R2 connect 53 feet of single-chip microcontroller U2；Power supply P1's
Cathode ground connection；The other end of charge and discharge capacitance C1 connects 57 foot of single-chip microcontroller；The one of the cathode of diode D1 and the second filter capacitor C2
It holds, the input pin of Voltagre regulator chip U1 connects；One end of third filter capacitor C3 and anode, the electricity of the 4th filter capacitor C4
VCC power output end is used as after pressing the output pin connection of voltage regulator chip U1；The other end of second filter capacitor C2, third filtering
The grounding leg ground connection of the other end of capacitor C3, the cathode of the 4th filter capacitor C4, Voltagre regulator chip U1；One end of crystal oscillator X1
61 feet for being followed by single-chip microcontroller are connect with one end of the 5th filter capacitor C5；The one of the other end of crystal oscillator X1 and the 6th filter capacitor C6
End connection is followed by 60 feet of single-chip microcontroller；The other end of 5th filter capacitor C5, the other end of the 6th filter capacitor C6 are grounded；Third
A termination VCC power output end of resistance R3, the other end of 3rd resistor R3 are connected together with one end of the 7th filter capacitor C7
When connect 2 feet of single-chip microcontroller U2, the other end ground connection of the 7th filter capacitor C7；One end of 8th filter capacitor C8, the 9th capacitor C9
One end, 11 feet of single-chip microcontroller U2,12 feet of single-chip microcontroller U2, single-chip microcontroller U2 13 feet be connected and be followed by VCC power output end；The
The other end of eight filter capacitor C8, the other end of the 9th capacitor C9 are grounded；29 feet of single-chip microcontroller U2 connect VCC power output end, single
30 feet of piece machine U2 are grounded；Single-chip microcontroller U2 uses model STM8R151L chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615118.3A CN108872693B (en) | 2018-06-14 | 2018-06-14 | Voltage detection circuit based on capacitor charge and discharge and resistor voltage division |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615118.3A CN108872693B (en) | 2018-06-14 | 2018-06-14 | Voltage detection circuit based on capacitor charge and discharge and resistor voltage division |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108872693A true CN108872693A (en) | 2018-11-23 |
| CN108872693B CN108872693B (en) | 2024-07-02 |
Family
ID=64339017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810615118.3A Active CN108872693B (en) | 2018-06-14 | 2018-06-14 | Voltage detection circuit based on capacitor charge and discharge and resistor voltage division |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108872693B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687837A (en) * | 2019-08-30 | 2020-01-14 | 浙江威星智能仪表股份有限公司 | Power failure detection circuit based on single chip microcomputer |
| CN110750058A (en) * | 2019-08-30 | 2020-02-04 | 浙江威星智能仪表股份有限公司 | Temperature acquisition circuit based on singlechip |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187738A (en) * | 2011-12-28 | 2013-07-03 | 海洋王照明科技股份有限公司 | Charging circuit and charger |
| CN104713615A (en) * | 2015-03-23 | 2015-06-17 | 杭州电子科技大学 | Circuit of drainage pipe network liquid level measurement device |
| WO2017101231A1 (en) * | 2015-12-18 | 2017-06-22 | 深圳市中孚能电气设备有限公司 | Portable power circuit for lamp and lamp |
| WO2017143493A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳凯世光研股份有限公司 | Electronic ballast for remote regulation and control via app |
| CN208588774U (en) * | 2018-06-14 | 2019-03-08 | 浙江威星智能仪表股份有限公司 | Voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure |
-
2018
- 2018-06-14 CN CN201810615118.3A patent/CN108872693B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187738A (en) * | 2011-12-28 | 2013-07-03 | 海洋王照明科技股份有限公司 | Charging circuit and charger |
| CN104713615A (en) * | 2015-03-23 | 2015-06-17 | 杭州电子科技大学 | Circuit of drainage pipe network liquid level measurement device |
| WO2017101231A1 (en) * | 2015-12-18 | 2017-06-22 | 深圳市中孚能电气设备有限公司 | Portable power circuit for lamp and lamp |
| WO2017143493A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳凯世光研股份有限公司 | Electronic ballast for remote regulation and control via app |
| CN208588774U (en) * | 2018-06-14 | 2019-03-08 | 浙江威星智能仪表股份有限公司 | Voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure |
Non-Patent Citations (1)
| Title |
|---|
| 赵顺洪;: "基于80C52的充放电法测高值电阻", 科学咨询(科技・管理), no. 10 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687837A (en) * | 2019-08-30 | 2020-01-14 | 浙江威星智能仪表股份有限公司 | Power failure detection circuit based on single chip microcomputer |
| CN110750058A (en) * | 2019-08-30 | 2020-02-04 | 浙江威星智能仪表股份有限公司 | Temperature acquisition circuit based on singlechip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108872693B (en) | 2024-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208588774U (en) | Voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure | |
| CN206805738U (en) | Residual current type detector for electric fire protection | |
| CN108872693A (en) | A kind of voltage detecting circuit based on capacitor charge and discharge and electric resistance partial pressure | |
| CN104216494A (en) | Single chip microcomputer controlled power grid detection and reset circuit | |
| CN207704007U (en) | A kind of DC power supply power-fail detection circuit | |
| CN105807645B (en) | A kind of method for controlling power supply and electronic equipment | |
| CN201584957U (en) | Touch key circuit, touch control device, touch screen and electronic equipment | |
| CN204945296U (en) | A kind of cellular phone data line tester | |
| CN209560016U (en) | A kind of DC power supply plate connector detection system | |
| CN208571948U (en) | A kind of primary side feedback Switching Power Supply control chip, control system and charger | |
| CN208754183U (en) | Power circuit and its indoor display unit based on MicroUSB power supply | |
| CN203519735U (en) | Electrostatic detection apparatus | |
| CN207339649U (en) | A kind of stabilized voltage supply device for being used for the double ultrasonic rangings of intelligence | |
| CN103353566B (en) | Battery for mimic channel equipment testing circuit in place | |
| CN103499749B (en) | A kind of electrostatic testing apparatus | |
| CN206922502U (en) | Power-down protection control circuit and electronic equipment | |
| CN209372947U (en) | A kind of power-fail detection circuit | |
| CN208188198U (en) | New electric energy metering and equipment for monitoring power quality | |
| CN209656865U (en) | A kind of DC voltage overvoltage/undervoltage detection circuit | |
| CN203772966U (en) | A portable measuring instrument | |
| CN209593018U (en) | A kind of capacitor of lithium ion battery over-discharge protection circuit | |
| CN107294360B (en) | Network tester externally connected with power supply interface and control method thereof | |
| CN206671131U (en) | A kind of laser PM2.5 monitors | |
| CN205688220U (en) | A kind of intelligent washing machine control system | |
| CN204256029U (en) | Residual voltage proving installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |