CN109687389A - Circuit protection method and device - Google Patents
Circuit protection method and device Download PDFInfo
- Publication number
- CN109687389A CN109687389A CN201811608981.2A CN201811608981A CN109687389A CN 109687389 A CN109687389 A CN 109687389A CN 201811608981 A CN201811608981 A CN 201811608981A CN 109687389 A CN109687389 A CN 109687389A
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- current
- control
- real
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of circuit protection methods; in the circuit include current detection means, main control module, at least one control circuit and with the concatenated relay of the control circuit, the circuit protection method the following steps are included: current detection means real-time measure and control circuit real-time current；Obtain corresponding first predetermined current of the control circuit；When the real-time current is greater than first predetermined current, disconnects the control circuit and disconnect the relay.The invention also discloses a kind of circuit protection devices.In overcurrent protection circuit, only with the real-time current in current detection means detection control circuit, main control module obtains real-time current, when real-time current is excessive, disconnects control circuit and disconnects relay, realize the protection to circuit.The control flow for simplifying overcurrent protection, improves the control reaction speed of overcurrent protection, and the feedback of circuit protection is not easy out of control, can timely and effectively protect to circuit and external equipment.
Description
Technical field
The present invention relates to electric power electrical technology field more particularly to circuit protection methods and device.
Background technique
When the electric current inputted in electric appliance is excessive, it is easily damaged the accessory of electric appliance, shortens the service life of electric appliance.Therefore,
Need that circuit protection is arranged in electric appliance, electric current be more than electrical accessorie receiving electric current when, disconnecting circuit, protect electric appliance not by
Damage.
Overcurrent protection method used at present passes through I2C master & slave control using sequence controller and power management chip
Mode, after acquiring output current data by analog-to-digital conversion module, the mode of control power management chip output electric current is realized in plate
Export the excess current protective function of electric current.
As shown in Figure 1, over-current protection system includes sequence controller and power management chip, sequence controller includes
I2C host module, overcurrent detecting module and time-sequence control module, power management chip include I2C slave module, multiple outputs
Channel, analog-to-digital conversion module and clock signal counting module send output channel selection instruction using I2C host module, and
The initial signal and a plurality of clock signal exported using clock signal counting module according to time-sequence control module issues acquisition instructions,
Analog-to-digital conversion module acquires the drive of corresponding output channel output according to output channel selection instruction after receiving acquisition instructions
Streaming current obtains digital signal, overcurrent detecting module by digital signal determine the driving current whether overcurrent.
Therefore existing overcurrent protection method control mode is complicated, module is numerous, and the logic control of each module is tight
Close, feedback element is excessively easy out of control.
Summary of the invention
The main purpose of the present invention is to provide a kind of circuit protection method and devices, it is intended to solve existing over current protection
Maintaining method control mode is complicated, and module is numerous, and the logic control of each module is close, and feedback element is excessively easy technology out of control and asks
Topic.
To achieve the above object, the present invention provides a kind of circuit protection method, which is characterized in that includes electricity in the circuit
Flow detection device, main control module, at least one control circuit and with the concatenated relay of the control circuit, the circuit protects
Maintaining method the following steps are included:
The real-time current of current detection means real-time measure and control circuit；
Obtain corresponding first predetermined current of the control circuit；
When the real-time current is greater than first predetermined current, disconnects the control circuit and disconnect the relay
Device.
Optionally, after the step of relay for disconnecting the control circuit, further includes:
After being spaced the first prefixed time interval, it is closed the relay, the execution current detection means is returned and examines in real time
The step of surveying the real-time current of control circuit, and record return and execute number, when the cycle-index is greater than preset threshold, stop
It only returns and executes.
Optionally, after the step of real-time current of the overcurrent detecting device real-time measure and control circuit, further includes:
Whether judgement currently generates the control instruction of the control circuit；
When not generating the control instruction of the control circuit, judge whether the real-time current is greater than the second default electricity
Stream；
When the real-time current is greater than the second predetermined current, the relay of the control circuit is disconnected.
Optionally, the circuit protection method further include:
When not receiving the control instruction of the control circuit in the second prefixed time interval, the control circuit is disconnected
Relay.
Optionally, after the step of relay for disconnecting the control circuit, further includes:
When detecting the control instruction of the control circuit, it is closed the relay of the control circuit.
Optionally, after the step of relay for disconnecting the control circuit, further includes:
The concatenated power supply of the relay is closed, and opens the power supply after relay closure.
Optionally, after the step of relay for disconnecting the control circuit, further includes:
Feed back the prompt information of the control circuit overcurrent.
In addition, to achieve the above object, the present invention also provides a kind of circuit protection devices, which is characterized in that the circuit
Guard method device includes:
Current detection means, the current detection means are series in control circuit, for controlling electricity described in real-time detection
The real-time current on road；
Main control module, for obtaining the real-time current and the control circuit corresponding first of current detection means detection
Predetermined current sends control instruction according to the real-time current and first predetermined current, disconnected to control the control circuit
It opens；
Relay control module, for when the real-time current is greater than the first predetermined current, control to be series at the control
Relay in circuit processed disconnects.
Optionally, the circuit protection device further include:
First power supply, for being master control module for power supply；
Second source, for for the current detection means, the relay control module, the relay and described
Control circuit power supply；
Voltage check device, for obtaining the state of the relay, the state include disconnect and closure at least
One.
Optionally, the circuit protection device electrifying timing sequence are as follows: first power supply, the main control module, described first
The external equipment of the external equipment of power supply, the second source and the second source.
A kind of circuit protection method and device that the embodiment of the present invention proposes, the circuit are filled at least provided with current detecting
Set, main control module, at least one control circuit and with the concatenated relay of control circuit.Current detection means real-time detection control
Real-time current in circuit processed.Judge whether the real-time current of control circuit is greater than the corresponding first default electricity of the control circuit
Stream.When the real-time current of the control circuit the first predetermined current corresponding greater than the control circuit, show current control electricity
Electric current in road is more than that the maximum of external equipment bears electric current, therefore disconnects the control circuit and disconnect concatenated with the control circuit
Relay protects circuit.In overcurrent protection circuit, only with the real-time electricity in current detection means detection control circuit
Stream, main control module obtains real-time current, when real-time current is excessive, disconnects control circuit, so that the control circuit is disabled, and break
Open relay realizes the protection to circuit.The control flow for simplifying overcurrent protection improves the control reaction speed of overcurrent protection
Degree, the feedback of circuit protection are not easy out of control, can timely and effectively protect to circuit and external equipment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of over-current protection system in the prior art；
Fig. 2 is the flow diagram of circuit protection method first embodiment of the present invention；
Fig. 3 is the structure schematic diagram for the current protective device knot that the embodiment of the present invention is related to；
Fig. 4 is the flow diagram of circuit protection method second embodiment of the present invention；
Fig. 5 is the flow diagram of circuit protection method 3rd embodiment of the present invention；
Fig. 6 is the flow diagram of circuit protection method fourth embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are:
The real-time current of current detection means real-time measure and control circuit；
Obtain corresponding first predetermined current of the control circuit；
When the real-time current is greater than first predetermined current, disconnects the control circuit and disconnect the relay
Device.
Since overcurrent protection method control mode in the prior art is complicated, module is numerous, the logic control of each module
Closely, feedback element is excessively easy technical problem out of control.
The present invention provides a solution, and the circuit is at least provided with current detection means, main control module, at least one
Control circuit and with the concatenated relay of control circuit.Real-time electricity in current detection means real-time measure and control circuit
Stream.Judge whether the real-time current of control circuit is greater than corresponding first predetermined current of the control circuit.When the control circuit
When real-time current is greater than the control circuit corresponding first predetermined current, show that the electric current in the current control circuit is more than external
The maximum of equipment bears electric current, therefore disconnects the control circuit and disconnect and the concatenated relay of the control circuit, protection circuit.?
In overcurrent protection circuit, only with the real-time current in current detection means detection control circuit, main control module obtains real-time
Electric current disconnects control circuit when real-time current is excessive, so that the control circuit is disabled, and disconnect relay, realizes to circuit
Protection.The control flow for simplifying overcurrent protection, improves the control reaction speed of overcurrent protection, the feedback of circuit protection is not
It is easily out of control, timely and effectively circuit and external equipment can be protected.
Reference Fig. 2, circuit protection method first embodiment of the present invention, the circuit protection method include:
Step S10, the real-time current of current detection means real-time measure and control circuit.
In the use process of electric appliance, if the electric current inputted in electric appliance is excessive, it is easily damaged the accessory of electric appliance, shortens electricity
The service life of device.Therefore, it is necessary to which circuit protection is arranged in electric appliance, when electric current is more than the receiving electric current of electrical accessorie, break
Open circuit, protection electric appliance are injury-free.
As shown in figure 3, having control system 100, relay control module 200, first the 300, second electricity of power supply in circuit
Source 400 and the first external equipment 500 being connect with the first power supply 300, the second external equipment being connect with second source 400
600.There is main control module 102, the first power supply 300, second control circuit 105, current detection means in control system 100
104 and voltage check device 103.Main control module 102 is connect with first control circuit 101 and second control circuit 105, control
Entire circuit, and main control module 102 is powered by the first power supply 300 that first control circuit 101 connects, to avoid in the second control
After the connection of circuit 105 processed and second source 400 disconnects, main control module 102 be can not work normally.Current detection means 104 is used
In the real-time current of detection second control circuit 105, voltage check device 103 is used to detect the voltage of second source 400, according to
Voltage detecting result judges whether response control instructs relay, i.e., the state of relay is closure or disconnects, meanwhile, electric current
Detection device 104 and voltage check device 103 will test result and be transferred to main control module 102, so that main control module 102 is according to inspection
It surveys result and sends control instruction, the concatenated relay of open or close second control circuit 105 to relay control module 200
(not shown).
In addition, at least there is a second control circuit 105 in circuit, circuit is controlled when there are multiple described second
When 105, connect after multiple 105 parallel connections of control second control circuit with relay.
First power supply 300 uses 12V power voltage supply, and it is low to meet controller, processor, sensor etc. in control electrical equipment
The power supply of electric current power consuming device.Second source 400 uses 36V power voltage supply mainly to give the direct current generator in electrical equipment, stepping
The power supply of the high power devices such as motor.Due to, the electric current of high power device is unstable, it is be easy to cause over-current phenomenon avoidance, therefore, it is supervised in real time
The electric current in the second control circuit 105 that second source 400 connects is surveyed, to disconnect relay protection second when electric current is excessive
Device in control circuit 105.
In the present embodiment, the circuit is at least provided with current detection means 104, main control module 102, at least one the
Two control circuits 105 and with the concatenated relay (not shown) of second source 400.It should be pointed out that claim
Control circuit described in book is the second control circuit 105, when the concatenated power supply of the second circuit 105 is 36V electricity
When source, the second control circuit 105 is 36V control circuit.104 real-time detection second control circuit 105 of current detection means
In real-time current.
Step S20 obtains corresponding first predetermined current of the control circuit.
Step S30, judges whether the real-time current is greater than first predetermined current.
Step S40 disconnects the control circuit and disconnects institute when the real-time current is greater than first predetermined current
State relay.
When there are the possible difference of external equipment when multiple control circuits, connected in each control circuit, differences in circuit
The maximum current that external equipment is able to bear also is not quite similar, therefore, different control circuits is arranged in the controls different
The first predetermined current.
Judge whether the real-time current of control circuit is greater than corresponding first predetermined current of the control circuit.When control electricity
When the real-time current on road is greater than the control circuit corresponding first predetermined current, show that the electric current in the current control circuit is more than
The maximum of external equipment bears electric current, therefore main control module disconnects the control circuit and disconnects the concatenated relay of the control circuit
Device protects circuit.It should be pointed out that main control module first disconnects control circuit, control circuit is made to disable, stops external equipment
Work and then disconnection relay, can be effectively protected external equipment and circuit devcie.
In overcurrent protection circuit, only with the real-time current in current detection means detection control circuit, master control mould
Block obtains real-time current, is sent and is instructed to relay control module according to real-time current, controls the control circuit and relay
The switch of device realizes the protection to circuit.The control flow for simplifying overcurrent protection improves the control reaction speed of overcurrent protection
Degree, timely and effectively to the protection of circuit devcie and external equipment.
In addition, the current detecting chip used in current detection means is able to detect the electric current within the scope of 0-30A, improve existing
The detection range of some highest detection electric current 10A, therefore, it is electric greatly that circuit protection method of the invention can be suitable for high-power output
The electrical equipment of stream.
For example, coconut puncher is divided into five punching, turntable, manipulator, promotion and gate modules, wherein perforating module
In there is a DC motor control circuit, turntable module has a DC motor control circuit, has in manipulator
Rotation stretches and clamps control circuit, has a stepping motor control circuit in hoisting module, has one in gate module
DC motor control circuit is completed to need seven control circuits to the punch operation of coconut.According to outer in different control circuits
Corresponding first predetermined current is arranged to control circuit in the current carrying capacity for connecing equipment, for example, to the direct current in perforating module
It is 8A that the first predetermined current, which is arranged, in circuit for controlling motor, and the clamping control circuit in manipulator is arranged the first predetermined current and is
3A。
Further, while relay being disconnected realization circuit protection, the prompt information of circuit overcurrent is fed back to
From the background, for knowing circuit condition from the background, maintenance circuit is taken in time.Include the position of control circuit in overcurrent prompt information
Confidence breath, over current value and corresponding first pre-set current value of the control circuit etc..
In the present embodiment, the circuit is at least provided with current detection means, main control module, at least one control circuit
And with the concatenated relay of control circuit.Real-time current in current detection means real-time measure and control circuit.Judgement control
Whether the real-time current of circuit is greater than corresponding first predetermined current of the control circuit.When the real-time current of the control circuit is greater than
When corresponding first predetermined current of the control circuit, show that the electric current in the current control circuit is more than that the maximum of external equipment is held
By electric current, therefore disconnects the control circuit and disconnect and the concatenated relay of the control circuit, protection circuit.In overcurrent protection electricity
Lu Zhong, only with the real-time current in current detection means detection control circuit, main control module obtains real-time current, in real-time electricity
When flowing through big, control circuit is disconnected, so that the control circuit is disabled, and disconnect relay, realizes the protection to circuit.Simplified
The control flow of current protection, improves the control reaction speed of overcurrent protection, and the feedback of circuit protection is not easy out of control, Neng Gouji
When effectively circuit and external equipment are protected.
Further, referring to Fig. 4, circuit protection method second embodiment of the present invention is based on above-mentioned first embodiment, described
After step S40, further includes:
Step S50 after being spaced the first prefixed time interval, is closed the relay, returns and executes the current detecting dress
The step of setting the real-time current of real-time measure and control circuit, and record return and execute number, it is preset when the cycle-index is greater than
When threshold value, stop returning to execution.
In the real-time current for detecting control circuit the first predetermined current corresponding greater than the control circuit, to avoid electricity
The error detection of stream is spaced the first prefixed time interval after relay disconnection, is closed the relay, detects control electricity again
The real-time current on road continues to disconnect relay if the real-time current is still greater than the first predetermined current；If real-time current is less than
First predetermined current then no longer disconnects relay, guarantees that control circuit is powered, when control circuit receives assignment instructions, control
It is enabled to make the control circuit, completes corresponding control task.Wherein, the first prefixed time interval is desirable just less than 5 minutes
Value.
Meanwhile closing relay again, the real-time current of control circuit is detected, it can also be automatically extensive in control circuit
When multiple normal, the work of control circuit can be restored in time.
After closing relay, the real-time current of cycle detection control circuit, cycle-index is recorded, in iterative cycles
When number is greater than preset threshold, no longer closing relay.Avoid control circuit there are serious problems, it is excessive in control circuit
It is passed through high current, damages circuit and external equipment.Wherein, the positive integer within preset threshold desirable 3.In addition, between in the circulating cycle
The prompt information of overcurrent is not fed back to backstage temporarily, if there is still a need for disconnections, then Xiang Houtai for relay over numerous cycles
The prompt information of feedback control circuit overcurrent.
In the present embodiment, it is greater than the corresponding first default electricity of the control circuit in the real-time current for detecting control circuit
When stream, it is spaced the first prefixed time interval after relay disconnection, the relay is closed, detects the real-time of the control circuit again
Electric current continues to disconnect relay if the real-time current is still greater than the first predetermined current；If real-time current is default less than first
Electric current then no longer disconnects relay, guarantees that control circuit is powered, when control circuit receives assignment instructions, controls the control
Circuit processed is enabled, completes corresponding control task.Multiple closing relay, can be when control circuit restores normal automatically, can
The work for restoring control circuit in time, realizes the automatic recovery of control circuit function.
Further, referring to Fig. 5, circuit protection method 3rd embodiment of the present invention is implemented based on the above-mentioned first or second
, after the step S10, further includes:
Whether step S60, judgement currently generate the control instruction of the control circuit.
Step S70 judges whether the real-time current is greater than second when not generating the control instruction of the control circuit
Predetermined current.
Step S80 disconnects the relay of the control circuit when the real-time current is greater than the second predetermined current.
Not receiving control instruction in control circuit, i.e. the equipment of control circuit connection does not work, and at this point, control
There are high currents in circuit processed, then show that current control circuit is in short-circuit condition.Therefore in the real-time of real-time measure and control circuit
When electric current, whether the real-time detection control circuit receives control instruction, does not receive control instruction in the control circuit and examines
When the real-time current measured is greater than the second predetermined current, the relay of the control circuit is disconnected, implements the short circuit to control circuit
Protection.For example, it is short circuit current protection that the second predetermined current, which takes 9A, value can also be carried out according to the actual conditions of control circuit.
Under short-circuit protection state, show that short circuit overcurrent is protected into the prompt information of the overcurrent protection of backstage feedback, with
Virtual condition situation for backstage for overcurrent is repaired come corresponding in real time.
In the present embodiment, in the real-time current of real-time measure and control circuit, whether the real-time detection control circuit is connect
Control instruction is received, is greater than the second predetermined current in the real-time current that the control circuit does not receive control instruction and detects
When, the relay of the control circuit is disconnected, the short-circuit protection to control circuit is implemented.
Further, referring to Fig. 6, current protection method fourth embodiment of the present invention is based on above-mentioned the first to three any reality
Example is applied, after the step S40, further includes:
Step S90 disconnects the control when not receiving the control instruction of the control circuit in the second prefixed time interval
The relay of circuit processed.
In circuit, even if relay is in closed state, the control circuit is currently not used, does not need the control circuit
Work can disconnect the relay of the control circuit if the control circuit does not receive control instruction for a long time, reduce circuit energy
Consumption.
And in the control instruction for detecting the control circuit, relay is closed, so that the control circuit normally connects
Control instruction is received, and completes corresponding actions according to control instruction.
In addition, may also turn off when not receiving the control instruction of control circuit in the second prefixed time interval as the control
The power supply of circuit power supply processed.After power supply closing, the external equipment of circuit connection to be controlled is in standby mode, until receiving
To after control instruction, the driving logic of each external equipment is initialized, corresponding control action is completed.
In the present embodiment, in the case where relay is in closed state, judge the second time interval inner control circuit whether
Control instruction is received, if not receiving control instruction, the relay of the control circuit can be disconnected, reduce circuit energy consumption.
In addition, the embodiment of the present invention also proposes a kind of circuit protection device.
As shown in figure 3, having control system 100, the 200, first electricity of relay control module in the circuit protection device
Source 300, second source 400 and the first external equipment 500 being connect with the first power supply 300, connect with second source 400
Two external equipments 600.There is main control module 102, the first power supply 300, second control circuit 105, electric current in control system 100
Detection device 104 and voltage check device 103.Main control module 102 and first control circuit 101 and second control circuit 105
Connection, controls entire circuit, and main control module 102 is powered by the first power supply 300 that first control circuit 101 connects, to keep away
Exempt from after the connection of second control circuit 105 and second source 400 disconnects, main control module 102 can not work normally.
Current detection means 104, the real-time current for real-time detection second control circuit 105；
Main control module 102, for obtaining the real-time current and second control circuit 105 of the detection of current detection means 104
Corresponding first predetermined current sends control instruction according to the real-time current and first predetermined current, described in control
Second control circuit 105 disconnects；
Relay control module 200, for when the real-time current is greater than the first predetermined current, control to be series at described
Relay in second control circuit 105 disconnects.
In addition, at least there is a second control circuit 105 in circuit, circuit is controlled when there are multiple described second
When 105, connect after multiple 105 parallel connections of control second control circuit with relay.
In addition, voltage check device 103 is used to detect the voltage of second source 400, according to voltage detecting result judge after
Whether response control instructs electric appliance, i.e., the state of relay is closure or disconnects, meanwhile, current detection means 104 and voltage
Detection device 103 will test result and be transferred to main control module 102, so that main control module 102 is according to testing result to relay control
Molding block 200 sends control instruction, the concatenated relay (not shown) of open or close second control circuit 105
The present invention is main only with the real-time current in current detection means detection control circuit in circuit protection device
It controls module and obtains real-time current, disconnected according to real-time current to control relay, realize the protection to circuit.Simplify over current protection
The control flow of shield improves the control reaction speed of overcurrent protection, timely and effectively to the protection of circuit and external equipment.
Also, dual power supply is used in circuit protection device of the invention, is only needed in entire overcurrent protection
Current detecting chip and main control chip, and needed in the prior art using timing controller, power management chip and master control
Chip reduces hardware cost using less control chip.
Further, it since there are two power supplys for tool in the circuit protection device, effectively to avoid powering on race problem, reduces
Powered on moment burns out the risk of control panel, and the electrifying timing sequence of the current protective device is the first power supply, the main control module, described
The external equipment of the external equipment of first power supply, the second source and the second source.Using above-mentioned electrifying timing sequence energy
Enough effectively reduce the excessive damage circuit of starting current of complete machine powering moment.Meanwhile it can be supervised in real time using above-mentioned electrifying timing sequence
Survey second control circuit and the second external equipment whether overcurrent.
In the present embodiment, have in circuit protection device, current detection means, main control module and relay control mould
Block.By the real-time current of current detection means real-time measure and control circuit, and when real-time current is greater than the first predetermined current,
Disconnect the concatenated relay of the control circuit, real-time overcurrent protection.In the present invention in circuit protection device, only with electric current
Detection device detects the real-time current in control circuit, and main control module obtains real-time current, controls institute according to real-time current size
It states control circuit and control relay disconnects, realize the protection to circuit.The control flow for simplifying overcurrent protection, improved electricity
The control reaction speed for flowing protection, timely and effectively to the protection of circuit and external equipment.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of circuit protection method, which is characterized in that include current detection means, main control module, at least one in the circuit
Control circuit and with the concatenated relay of the control circuit, the circuit protection method the following steps are included:
The real-time current of current detection means real-time measure and control circuit；
Obtain corresponding first predetermined current of the control circuit；
When the real-time current is greater than first predetermined current, disconnects the control circuit and disconnect the relay.
2. circuit protection method as described in claim 1, which is characterized in that described to disconnect described in the control circuit and disconnection
After the step of relay, further includes:
After being spaced the first prefixed time interval, it is closed the relay, returns and executes the current detection means real-time detection control
The step of real-time current of circuit processed, and record return and execute number, when the cycle-index is greater than preset threshold, stop returning
Receipt row.
3. circuit protection method as described in claim 1, which is characterized in that the current detection means real-time measure and control electricity
After the step of real-time current on road, further includes:
Whether judgement currently generates the control instruction of the control circuit；
When not generating the control instruction of the control circuit, judge whether the real-time current is greater than the second predetermined current；
When the real-time current is greater than the second predetermined current, the relay of the control circuit is disconnected.
4. circuit protection method as described in claim 1, which is characterized in that the circuit protection method further include:
When not receiving the control instruction of the control circuit in the second prefixed time interval, the relay of the control circuit is disconnected
Device.
5. circuit protection method as claimed in claim 4, which is characterized in that described to disconnect described in the control circuit and disconnection
After the step of relay, further includes:
When detecting the control instruction of the control circuit, it is closed the relay of the control circuit.
6. circuit protection method as claimed in claim 5, which is characterized in that described to disconnect described in the control circuit and disconnection
After the step of relay, further includes:
The concatenated power supply of the relay is closed, and opens the power supply after relay closure.
7. the circuit protection method as described in claim 1-6 is any, which is characterized in that described to disconnect the control circuit and break
After the step of opening the relay, further includes:
Feed back the prompt information of the control circuit overcurrent.
8. a kind of circuit protection device, which is characterized in that the circuit protection device includes:
Current detection means, the current detection means are series in control circuit, for control circuit described in real-time detection
Real-time current；
Main control module, real-time current and the control circuit corresponding first for obtaining current detection means detection are preset
Electric current sends control instruction according to the real-time current and first predetermined current, is disconnected with controlling the control circuit；
Relay control module, for when the real-time current is greater than the first predetermined current, control to be series at the control electricity
Relay in road disconnects.
9. circuit protection device as claimed in claim 8, which is characterized in that the circuit protection device further include:
First power supply, for being master control module for power supply；
Second source, for being the current detection means, the relay control module, the relay and the control
Circuit power supply；
Voltage check device, for obtaining the state of the relay, the state includes at least one of disconnecting and being closed.
10. circuit protection device as claimed in claim 9, which is characterized in that the circuit protection device electrifying timing sequence are as follows: institute
State the first power supply, the main control module, the external equipment of first power supply, the second source and the second source
External equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608981.2A CN109687389A (en) | 2018-12-26 | 2018-12-26 | Circuit protection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608981.2A CN109687389A (en) | 2018-12-26 | 2018-12-26 | Circuit protection method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687389A true CN109687389A (en) | 2019-04-26 |
Family
ID=66190012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811608981.2A Pending CN109687389A (en) | 2018-12-26 | 2018-12-26 | Circuit protection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687389A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635537A (en) * | 2019-10-14 | 2019-12-31 | 北京云迹科技有限公司 | Charging control method and device and robot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN102916387A (en) * | 2012-10-31 | 2013-02-06 | 深圳市虹远通信有限责任公司 | Protection circuit for multi-port POE (power over Ethernet) power supply output shunt |
| CN103269056A (en) * | 2013-06-08 | 2013-08-28 | 临沂市拓普网络股份有限公司 | Current detection protection device and method |
| CN108462147A (en) * | 2018-04-04 | 2018-08-28 | 河北祥熙电气有限公司 | A kind of startup power supply short-circuit protection detection circuit and its detection method |
-
2018
- 2018-12-26 CN CN201811608981.2A patent/CN109687389A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032683Y (en) * | 2007-01-09 | 2008-03-05 | 高子泉 | Overcurrent protection circuit |
| CN102916387A (en) * | 2012-10-31 | 2013-02-06 | 深圳市虹远通信有限责任公司 | Protection circuit for multi-port POE (power over Ethernet) power supply output shunt |
| CN103269056A (en) * | 2013-06-08 | 2013-08-28 | 临沂市拓普网络股份有限公司 | Current detection protection device and method |
| CN108462147A (en) * | 2018-04-04 | 2018-08-28 | 河北祥熙电气有限公司 | A kind of startup power supply short-circuit protection detection circuit and its detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635537A (en) * | 2019-10-14 | 2019-12-31 | 北京云迹科技有限公司 | Charging control method and device and robot |
| CN110635537B (en) * | 2019-10-14 | 2022-02-08 | 北京云迹科技有限公司 | Charging control method and device and robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017118433A1 (en) | Battery charging/discharging method and circuit | |
| CN110456761B (en) | Energy management device testing system and method and vehicle | |
| CN105514526B (en) | The heating control system and method for battery modules | |
| CN102222956A (en) | Intelligent device and method for regulating charging current based on system status | |
| CN107895943B (en) | Device and its control method with wiring protection function | |
| CN102541238A (en) | Outage protector used for embedded computer and realization method thereof | |
| CN105680504A (en) | Protection method, protection circuit and electronic equipment | |
| CN107294057A (en) | Protection device and method, electric power system | |
| KR102346821B1 (en) | Test board, test system and test method of charging device | |
| CN105807155A (en) | Testing device and method for power cut and starting of electric devices | |
| CN103869927A (en) | Information processing method and electronic device | |
| CN109613348A (en) | A kind of high-voltaghe compartment tooling automatic detection device | |
| WO2023184830A1 (en) | Control circuit, method, and apparatus for backup battery unit, and storage system | |
| CN204732852U (en) | Domestic food system of processing and electric motor protective device thereof | |
| CN109950879B (en) | Charging protection device and method for power utilization circuit and circuit with charging protection function | |
| CN109687389A (en) | Circuit protection method and device | |
| CN109412819A (en) | Method and device for warning device power down | |
| CN109672271A (en) | The processing method of carrier wave expansion module and power-off event | |
| CN111263892A (en) | Method, device and equipment for detecting functions of adapter and storage medium | |
| CN104881341A (en) | Server as well as testing method and system for computer hard disk | |
| JP2008541687A (en) | Battery power management in overdischarged state | |
| CN207588113U (en) | Network interface plug-in and pull-off device and network interface insert-pull detection system | |
| CN102209333B (en) | Power supply control method and equipment | |
| CN107643494A (en) | A kind of memory supply network is for electric battery check device and method | |
| CN105743180B (en) | Method and electronic equipment for charging for electronic equipment |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |
|
| RJ01 | Rejection of invention patent application after publication |