CN208890474U - A kind of power-off protection apparatus based on farad capacitor for industrial gateway - Google Patents
A kind of power-off protection apparatus based on farad capacitor for industrial gateway Download PDFInfo
- Publication number
- CN208890474U CN208890474U CN201821646633.XU CN201821646633U CN208890474U CN 208890474 U CN208890474 U CN 208890474U CN 201821646633 U CN201821646633 U CN 201821646633U CN 208890474 U CN208890474 U CN 208890474U
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- capacitor
- power supply
- farad capacitor
- 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.)
- Active
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model relates to a kind of power-off protection apparatus based on farad capacitor for industrial gateway, the device include as backup power supply farad capacitor, power on management circuit, capacitor charging circuit, power-off switching circuit and power failure detection circuit；The utility model can not only well control system electrifying timing sequence, enable the system to normally work on power, and power supply can be switched fast when power is off, system made to continue to work normally.
Description
Technical field
The utility model relates to a kind of power-off protection apparatus more particularly to it is a kind of for industrial gateway based on farad capacitor
Power-off protection apparatus.
Background technique
In industry spot, bad environments power off suddenly frequent occurrence, the loss of data for causing gateway to acquire, if increasing storage
Function, it is desirable that the moment writes data into storage medium, frequently writes the service life that can reduce memory, especially writes when power is off
Data can not only lose data, and the memory of gateway can be damaged when serious.When system cut-off due to gateway can not to equipment state into
Row acquisition in real time, causes equipment state to be lost.Traditional design can fill when power was lost mostly plus rechargeable battery or button cell
Power supply.And common batteries are generally operational in 45 degree hereinafter, the charging time is long and charging times are few, are difficult to adapt to industry spot,
Farad capacitor has super charge storage ability, and small in size, and high reliablity, operating temperature range is wide, long service life, due to
This many feature, the application of farad capacitor is more and more, and farad capacitor can substitute button cell in industrial field completely
Use in scape.
Utility model content
The utility model be overcome above-mentioned shortcoming, and it is an object of the present invention to provide it is a kind of for industrial gateway based on farad
The power-off protection apparatus of capacitor, the device include as backup power supply farad capacitor, power on management circuit, capacitor charging electricity
Road, power-off switching circuit and power failure detection circuit；The utility model can not only well control system electrifying timing sequence, make system
It can normally work on power, and power supply can be switched fast when power is off, system is made to continue to work normally.
The utility model is to reach above-mentioned purpose by the following technical programs: a kind of for the electric based on farad of industrial gateway
The power-off protection apparatus of appearance, comprising: as backup power supply farad capacitor, power on management circuit, capacitor charging circuit, power-off inspection
Slowdown monitoring circuit and power-off switching circuit；Capacitor charging circuit, power failure detection circuit distinguish the external power supply of external+12VCC, and capacitor fills
Circuit is connect with farad capacitor, power-off switching circuit respectively, and power failure detection circuit exports PowerDownSi signal and gives system electricity
Source input terminal；It powers on management module and powers off the external power supply that switching circuit distinguishes external+5VCC, power-off switching circuit output control
System powers on the output end of management circuit to the power supply of system power supply input terminal SYS_5V.
Preferably, the described management circuit that powers on includes resistance, capacitor, integrated operational amplifier LM385, MOS field effect transistor and
555 timing chips；Management circuit is powered on by comparing farad capacitor both end voltage whether in charging tolerance band, output end passes through
Switch controlled delay circuit working condition, keeps system electrification working properly.
Preferably, the capacitor charging circuit include resistance, MC34063DC-DC power conversion chip, triode,
Inductance, capacitor, Schottky diode, field-effect tube；Capacitor charging circuit passes through resistance, triode by DC-DC integrated chip
Control feedback end voltage reaches constant-current charge purpose.
Preferably, the power-off switching circuit is made of field-effect tube, low voltage difference diode element, power-off switching electricity
The switching that main power voltage realizes backup power supply is detected by the grid of field-effect tube in road.
Preferably, the power failure detection circuit is made of voltage-stabiliser tube, NPN triode, resistance, capacity cell, power-off
Detection circuit passes through the voltage of detection system power supply, converts outputting standard Transistor-Transistor Logic level signal by triode, notifies system power supply
Power-off enables backup power supply power supply.
The utility model has the beneficial effects that: (1) the utility model can not only well control system electrifying timing sequence,
It enables the system to normally work on power, and power supply can be switched fast when power is off, system is made to continue to work normally；(2) this reality
With novel simple, facilitate it is small and exquisite, well can not be designed person be applied to it is practical.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
The utility model is described further combined with specific embodiments below, but the protection scope of the utility model is simultaneously
It is not limited only to this:
Embodiment: as shown in Figure 1, it is a kind of for industrial gateway based on the power-off protection apparatus of farad capacitor by as rear
The farad capacitor of stand-by power source powers on management circuit, capacitor charging circuit, power failure detection circuit and power-off switching electricity composition.It is external
Power input is powered off by+12VCC connection capacitor charging circuit and power failure detection circuit, capacitor charging circuit and farad capacitor
Switching circuit connection, power failure detection circuit export PowerDownSi signal and give system power supply input terminal.External power input+
5VCC is system main power source end, is connected to and powers on management module and power-off switching circuit, and power-off switching circuit output control powers on
Manage circuit output end to system power supply input terminal SYS_5V power supply, power on management module by external power input+
5VCC power supply.
As shown in Fig. 2, powering on management electric routing resistance, capacitor, integrated operational amplifier LM385, MOS field effect transistor and 555 timings
The elements such as chip are constituted.Wherein, including resistance R6, R14, capacitor C10, C7, chip U3 form voltage comparator circuit.Resistance R6 mono-
End is connected with main power source anode, and the other end is connected with the one end R14, the one end C10, U3 non-inverting input terminal, the one end resistance R5 and capacitor
The one end C8, U3 inverting input terminal are connected, C8, R14, C10 other end and the negative power cathode in succession of U3 power supply, U3 comparator output terminal
It is connected with the one end R10, the R10 other end is connected with Q6 grid.Q6 drain electrode connects with power supply negative, Q6 source electrode and Q4 grid, resistance R7
One end is connected, and the R7 other end is connected with Q4 source electrode with power supply, and Q4 drain electrode is connected with the one end R8, U2 power end, the R8 other end and C9
One end, U2 triggering end are connected, and U2 output end is connected with the one end R11, and the other end is connected with the one end R15, Q2 grid, Q2 drain electrode and C5
Anode is connected and provides power supply output.
Capacitor charging circuit is by resistance, MC34063DC-DC power conversion chip, triode, inductance, capacitor, Schottky two
Pole pipe, field-effect tube element are constituted, wherein including current-limiting resistance R1, integrated chip U1, inductance L1, resistance R2, R3, triode
Q3 forms constant-current charging circuit.The one end R1 is connected with input power, and the other end is connected with SWC, DC, PK of U1, the end TCAP of U1
It is connected with the one end C2, the C2 other end and power supply negative terminal, SWE and the D1 cathode of U1, inductance one end are connected, and it is negative that D1 anode connects power supply
Pole, the power supply other end are connected with R2, C1 anode, Q3 emitter, and C1 cathode connects power cathode, the R2 other end and Q3 base stage, R3 mono-
End, the one end C3, farad capacitor C4 anode are connected, and the R3 other end is connected with the end COMP of Q3 collector, the one end R4, U1, R4, C3's
The other end is connected with power cathode, and farad capacitor C4 cathode is connected with power cathode.
Power-off switching circuit is made of field-effect tube, low voltage difference diode element.Wherein, including Q1 and D2.Q1 drain electrode with
Farad capacitor anode is connected, and Q1 grid is connected with D2 anode main power source anode, and D2 cathode is connected with Q1 source electrode and manages with powering on
Circuit Q2 source electrode is connected.
Power failure detection circuit is made of voltage-stabiliser tube, NPN triode, resistance, capacity cell, wherein including voltage-stabiliser tube D3, three
Pole pipe Q5 and resistance R9, R12, R3.D3 cathode is connected with input power, and anode is connected with the one end R9, R12, the R12 other end and electricity
Source cathode is connected, and the R9 other end is connected with Q5 base stage, and Q5 collector and the one end R13 phase side simultaneously output signal to external use, and R13 is another
One end is connected with the negative plate of power supply, and Q5 emitter is connected with farad capacitor anode.
The working principle of the utility model is as follows:
Farad capacitor gives its charging by constant-current charging circuit when system electrification, and the charging time is determined by farad capacitor amount,
System power supply passes through the comparator judgement farad capacitor both end voltage for powering on management circuit whether in system worked well section,
If not being charged in system worked well area in opening time-delaying circuit and cutting system power supply to farad capacitor both end voltage, close
Delay circuit and the output of extensive system power supply, to guarantee that system electrification is working properly.
When the power break occurs, after power-fail detection circuit detects power off signal, pass through conversion circuit outputting standard TTL
Signal notifies system cut-off, and power-off switching circuit detects system cut-off, is switched to the power supply of backup power supply farad capacitor immediately, directly
To farad capacitor depleted of energy.
It is specific embodiment of the utility model and the technical principle used described in above, if according to the utility model
Conception made by change, when the spirit that generated function is still covered without departing from specification and attached drawing, should belong to
The protection scope of the utility model.
Claims (5)
1. a kind of power-off protection apparatus based on farad capacitor for industrial gateway, characterized by comprising: as standby electricity
The farad capacitor in source powers on management circuit, capacitor charging circuit, power failure detection circuit and power-off switching circuit；Capacitor charging electricity
The external power supply of external+12VCC is distinguished on road, power failure detection circuit, and capacitor charging circuit is electric with farad capacitor, power-off switching respectively
Road connection, power failure detection circuit export PowerDownSi signal and give system power supply input terminal；Power on management module and power-off switching
Circuit distinguishes the external power supply of external+5VCC, and the output end that power-off switching circuit output control powers on management circuit is electric to system
The power supply of source input terminal SYS_5V.
2. a kind of power-off protection apparatus based on farad capacitor for industrial gateway according to claim 1, feature
Be: the described management circuit that powers on includes resistance, capacitor, integrated operational amplifier LM385, MOS field effect transistor and 555 timing chips；
Management circuit is powered on by comparing farad capacitor both end voltage whether in charging tolerance band, output end is prolonged by switch controlled
When circuit working state, keep system electrification working properly.
3. a kind of power-off protection apparatus based on farad capacitor for industrial gateway according to claim 1, feature
Be: the capacitor charging circuit includes resistance, MC34063DC-DC power conversion chip, triode, inductance, capacitor, Xiao
Special based diode, field-effect tube；Capacitor charging circuit controls feedback end electricity by resistance, triode by DC-DC integrated chip
Pressure reaches constant-current charge purpose.
4. a kind of power-off protection apparatus based on farad capacitor for industrial gateway according to claim 1, feature
Be: the power-off switching circuit is made of field-effect tube, low voltage difference diode element, and power-off switching circuit passes through field-effect
The grid detection main power voltage of pipe realizes the switching of backup power supply.
5. a kind of power-off protection apparatus based on farad capacitor for industrial gateway according to claim 1, feature
Be: the power failure detection circuit is made of voltage-stabiliser tube, NPN triode, resistance, capacity cell, and power failure detection circuit passes through
The voltage of detection system power supply converts outputting standard Transistor-Transistor Logic level signal by triode, and notice system power supply power-off enables standby
Power supply power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821646633.XU CN208890474U (en) | 2018-10-11 | 2018-10-11 | A kind of power-off protection apparatus based on farad capacitor for industrial gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821646633.XU CN208890474U (en) | 2018-10-11 | 2018-10-11 | A kind of power-off protection apparatus based on farad capacitor for industrial gateway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208890474U true CN208890474U (en) | 2019-05-21 |
Family
ID=66515635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821646633.XU Active CN208890474U (en) | 2018-10-11 | 2018-10-11 | A kind of power-off protection apparatus based on farad capacitor for industrial gateway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208890474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133646A (en) * | 2022-09-01 | 2022-09-30 | 陕西中科天地航空模块有限公司 | Power supply path control circuit with priority |
-
2018
- 2018-10-11 CN CN201821646633.XU patent/CN208890474U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133646A (en) * | 2022-09-01 | 2022-09-30 | 陕西中科天地航空模块有限公司 | Power supply path control circuit with priority |
| CN115133646B (en) * | 2022-09-01 | 2022-11-22 | 陕西中科天地航空模块有限公司 | Power supply path control circuit with priority |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105468127B (en) | A kind of real-time data acquisition system and its power failure data storage circuit, method | |
| CN102694403B (en) | Charger and control method thereof | |
| CN201213222Y (en) | Rear stage working circuit protecting device for dual path electric power supplying system | |
| CN103166290A (en) | Control and protection circuit for single-lithium battery electric tool and detection and control method for control and protection circuit | |
| CN103321814B (en) | Car emergency ignition installation | |
| WO2017020782A1 (en) | Battery charging and discharging control circuit and battery charging and discharging system | |
| CN201698966U (en) | Electronic switch | |
| CN111327094A (en) | Low pressure BMS dormancy and awaken power supply control device up | |
| CN202888907U (en) | Photovoltaic charge and discharge controller | |
| CN103427821B (en) | Power management device realizing zero standby current | |
| CN103346553A (en) | Reverse-connection-resisting and relay-coil-short-circuit-resisting control circuit of electronic controller | |
| CN208890474U (en) | A kind of power-off protection apparatus based on farad capacitor for industrial gateway | |
| CN201084793Y (en) | Battery management device | |
| CN104953701A (en) | Isolation type battery power supply scheme | |
| CN202586382U (en) | Photovoltaic off-grid 48V control power supply possessing charging and discharging function | |
| CN204258342U (en) | Capacitive energy storage device | |
| CN204089343U (en) | The distribution power automation terminal possessing backup power system under low temperature environment | |
| WO2021258366A1 (en) | Control circuit, battery management system and electrochemical device | |
| CN102270877A (en) | Power supply system | |
| CN101123353B (en) | Solar photovoltaic controller | |
| CN204046218U (en) | A kind of energy-saving elevated piezoelectric battery circuit | |
| CN204089330U (en) | A kind of adaptive power-supply battery supplies power with double circuit device | |
| CN111262328A (en) | Vehicle-mounted terminal standby battery management system | |
| CN210927206U (en) | Charge-discharge control circuit of solar energy collecting power supply | |
| CN207504636U (en) | A kind of projecting apparatus with power-off protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |