CN106126387A - Intelligent digital power supply and the method and apparatus that it is monitored - Google Patents
Intelligent digital power supply and the method and apparatus that it is monitored Download PDFInfo
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- CN106126387A CN106126387A CN201610426700.6A CN201610426700A CN106126387A CN 106126387 A CN106126387 A CN 106126387A CN 201610426700 A CN201610426700 A CN 201610426700A CN 106126387 A CN106126387 A CN 106126387A
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- Prior art keywords
- digital power
- control signal
- power supply
- main control
- circuit
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
Abstract
The present invention relates to intelligent digital power technique fields, particularly to possessing the intelligent digital power supply of computer program monitoring function and the monitoring method to intelligent digital power supply.Intelligent digital power supply therein includes digital power body, digital power body includes main body circuit and main control chip U1, main body circuit has controlled circuit, main control chip U1 exports control signal under control of a computer program this controlled circuit, digital power body is provided with monitoring devices U2 being mounted and electrically connected on the mounting connection structure of digital power body, this control signal is monitored by real time, if monitoring this control signal to violate default operation rule, it is carried out the process action of correspondence, avoid intelligent digital power supply to damage or cause security incident.For the monitoring method of the main control chip to intelligent digital power supply, functional module can be set up, be combined into functional module construction, mainly be implemented by the computer program stored in a computer-readable storage medium.
Description
Technical field
The present invention relates to intelligent digital power technique fields, particularly to the intelligent number possessing computer program monitoring function
Word power supply and the monitoring method to intelligent digital power supply.For the monitoring method to intelligent digital power supply, can be by setting up merit
Energy module, is combined into functional module construction, the computer program stored in a computer-readable storage medium implements.
Background technology
At present, full-digital control is at intelligent digitals such as UPS, photovoltaic DC-to-AC converter, switch intelligent digital power supply and converters
Field of power supplies obtains a wide range of applications.Traditional uses analog circuit as the product of control device, and once production is good,
Wanting upgrading, be necessary for changing hardware circuit, bother very much, cost is the highest.Digital Control is by software and hardware altogether
With realizing, hardware performs corresponding action according to the requirement of software.Concrete control algolithm is completed by software, and software is stored in phase
In the DSP answered or MCU chip, when finding product existing defects or needing upgrading, it is only necessary to upgrading software, it is not necessary to change is hard
Part, convenient and swift.
For ease of safeguarding, current digital product is usually provided with communication interface such as RS485, RS232, USB, networking and connects
Mouthful etc., have is provided with the wireless modules such as WIFI, Zigbee, GPRS, and by these ports or module, intelligent digital power supply is permissible
It is connected on the Internet, uses mobile phone or computer to pass through monitoring, the fault detect that intelligent digital power supply is run by real-time performance
And the function such as program upgrading.This, while increasing convenience, also brings hidden danger, because in mobile phone, computer or network
There may be virus, these viruses can cause mobile phone or the computer cannot be properly functioning.For intelligent digital power supply, virus is made
Become harm more seriously may to result even in intelligent digital power supply and damage or cause security incident.
Summary of the invention
It is an object of the invention to: exporting at the main control chip U1 of intelligent digital power supply can to the control signal of controlled circuit
When can cause controlled circuit exception, it is possible to perform corresponding process action, it is to avoid intelligent digital power supply damages or causes safety
Accident.
For achieving the above object, the present invention provides techniques below scheme:
The present invention provides a kind of intelligent digital power supply possessing computer program monitoring function, including digital power body, numeral
Power supply body includes main body circuit and main control chip U1, has controlled circuit in main body circuit, and main control chip U1 is at computer program
Control under to this controlled circuit export control signal, this intelligent digital power supply also includes monitoring this control signal in real time
Monitoring devices U2, if monitoring devices U2 monitors this control signal and violates default operation rule, be carried out correspondence place
Reason action；Digital power body is provided with the mounting connection structure for being mounted and electrically connected monitoring devices U2.
Main body circuit includes power conversion circuit W1, for externally exporting output relay group W2 etc. of digital power, should
Power conversion circuit W1 includes the least one set brachium pontis being connected between power supply input positive terminal and power supply input negative pole end.This intelligence
The controlled circuit of digital power can be the power switch in power conversion circuit W1 brachium pontis, output relay group W2 etc., user
The target can monitored as monitoring devices U2 according to the concrete intelligent digital power supply main body circuit different controlled circuit of selection.
Monitoring devices U2 is One Time Programmable chip, and burning in advance has the operation rule that control signal need to be observed.Monitoring
The signal output port of device U2 connects the receiver port of main control chip U1, and signal sending end mouth PA1 connects main control chip
The reseting port RST of U1.
Preferably, in digital power body, connect to have between main control chip U1 and controlled circuit and controlled by monitoring devices U2
The on-off circuit D1 of system.
Preferably, a controlled end of controlled circuit receives the control signal from main control chip U1, another controlled end
Receive the control signal from monitoring devices U2.
The monitoring method to intelligent digital power supply that the present invention is given, carries out reality to the control signal of main control chip U1 output
Time monitoring, if monitoring this control signal to violate default operation rule, be carried out correspondence process action.This process action
Different according to concrete circuit state difference, such as violate default operation rule in control signal, cause there is bridge
Arm short circuit dangerous time, just block this control signal；Such as control signal violates default operation rule, specifically, main body
Circuit occurs abnormal, and main control chip U1 should export certain control signal and the most not export this, causes the electricity that there is outside
Can by output relay group counter fill dangerous time, just replacement main control chip U1 provides this control signal.This process is moved
Can also is that and make the computer program in main control chip U1 restart or return to version in the early time, or can be external
And/or to main control chip U1 signal an alert.
The invention has the beneficial effects as follows: the control signal that the main control chip U1 of intelligent digital power supply exports can be carried out reality
Time monitoring, export at the main control chip U1 of intelligent digital power supply and controlled circuit may be caused abnormal to the control signal of controlled circuit
Time, it is possible to perform corresponding process action, it is to avoid intelligent digital power supply damages or causes security incident.This intelligent digital power supply
Digital power body can need to be mounted and electrically connected burning according to user and have monitoring devices U2 of different operation rule, make prison
Survey device U2 more flexible to the monitoring of control signal.
For the monitoring method of the main control chip to intelligent digital power supply, functional module can be set up, be combined into function mould
Block framework, is mainly implemented by the computer program stored in a computer-readable storage medium.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the intelligent digital power supply possessing computer program monitoring function；
Fig. 2 is the schematic diagram of the power conversion circuit of intelligent digital power supply.
Detailed description of the invention
The circuit of the intelligent digital power supply of the present embodiment is as it is shown in figure 1, the main body circuit of its digital power body includes merit
Rate translation circuit W1, for externally exporting output relay group W2 etc. of digital power.Merit in power conversion circuit W1 brachium pontis
Rate switch S1, S2, S3, S4 and output relay group W2 system controlled circuit, main control chip U1 is the most defeated
Go out the control signals such as ON/OFF to these controlled circuits.This intelligent digital power supply includes supervising this control signal in real time
Monitoring devices U2 surveyed, monitoring devices U2 is mounted and electrically connected on the mounting connection structure of digital power body.This installation is even
Access node structure is chip carrier and the electrical connection port keeping for monitoring devices U2 on digital power body, and monitoring devices U2 is arranged on core
In bar, it connects the receiver port A1 of main control chip U1 for the signal output port A2 of signal an alert, and it is used
The receiver port B1 of main control chip U1, its signal sending end mouth is connected in the signal output port B2 sending Restart Signal
PA1 connects the reseting port RST of main control chip U1.The burning in advance of monitoring devices U2 has the operation rule that control signal need to be observed,
If monitor main control chip U1 output control signal violate default operation rule, be carried out correspondence process action (under
Literary composition illustrates).
This intelligent digital power supply can be by the online liter of the real-time performance computer program to controlling main control chip U1
Level, and the operation rule of control signal by power switch S1, S2, S3, the S4 in controlled circuit power conversion circuit W1 brachium pontis and
The operation logic of output relay group W2 determines.After the hardware configuration of intelligent digital power supply completes, controlled circuit is just
Often existing for certain operation logic during work, no matter how how the computer program of control main control chip U1 upgrades optimization, master control
Chip U1 exports and is required in accordance with specific operation rule to the control signal of controlled circuit, so that controlled circuit is in normal fortune
Work under row logic, and monitoring devices U2 has these specific operation rules with regard to burning.Main control chip U1 and monitoring devices U2
Between there is direct communication link, therefore monitoring devices U2 uses One Time Programmable chip, thus avoids in monitoring devices U2
The operation rule of burning is forced change.
In intelligent digital power supply, the control signal controlling different controlled circuit has different operation rules, and is controlling
When signal violates operation rule, monitoring devices U2 needs the process action of execution the most not under the different circuit states of controlled circuit
With.Below with power switch S1, S2, S3, the S4 in power conversion circuit W1 brachium pontis in intelligent digital power supply and output relay
As a example by group two controlled circuits of W2, to the process action when monitoring the default operation rule of control signal violation of monitoring devices U2
Explain.
One, power conversion circuit W1 as shown in Figure 2, this power conversion circuit W1 are the lists using unipolarity modulation system
Phase inverter circuit, including the two groups of brachium pontis being connected between power supply input positive terminal and power supply input negative pole end, its controlled circuit is
Power switch S1, S2 of being positioned on one group of brachium pontis and power switch S3, the S4 being positioned on another group brachium pontis, main control chip U1 passes through
Four signal output port PWM 1, PWM 2, the control signal of PWM 3, PWM 4 output control respectively power switch S1, S2,
S3, S4 ON/OFF.It is logical that monitoring devices U2 monitors main control chip U1 in real time by receiver port PA2, PA3, PA4, PA5
Cross signal output port PWM 1, PWM 2, the control signal of PWM 3, PWM 4 output.Main control chip U1 and controlled circuit it
Between connect have the on-off circuit D1 controlled by monitoring devices U2, monitoring devices U2 can by disconnect on-off circuit D1 block master
Control chip U1 exports to the control signal of power switch S1, S2, S3, S4.
Power switch S1, S2 are power frequency ripple switching tubes, and rated operation frequency f1 is 50 Hz, and power switch S3, S4 are high frequencies
Ripple switching tube, rated operation frequency f2 is 20KHz, and the too high meeting of operating frequency causes the conduction loss of power switch to increase, work
Underfrequency can cause the magnetics in circuit saturated；In normal operating conditions, upper two power of same group of brachium pontis
Switch does not allows to simultaneously turn on, the otherwise bridgc arm short of power conversion circuit W1, and intelligent digital power supply can be caused to damage or draw
Send out security incident.Therefore, according to the operation logic of power conversion circuit W1, main control chip U1 is exported to power conversion circuit W1
Control signal following operation rule is set:
Operation rule 1: actual switch frequency sf1 of power switch S1, S2 and the ratio n1=sf1/ f1 of rated operation frequency f1
Meet: 0.5≤n1≤2, i.e. 25Hz≤sf1≤100Hz；
Operation rule 2: actual switch frequency sf2 of power switch S3, S4 and the ratio n2=sf2/ f2 of rated operation frequency f2
Meet: 0.5≤n2≤2, i.e. 10KHz≤sf2≤40KHz；
Operation rule 3: during power switch S1 conducting, power switch S2 necessarily be in off-state, and need to be spaced one dead
District time t；When power switch S2 opens, power switch S1 necessarily be in off-state, and needs to be spaced the Dead Time of
t；
Operation rule 4: during power switch S3 conducting, power switch S4 necessarily be in off-state, and need to be spaced one dead
District time t；During power switch S4 conducting, power switch S3 necessarily be in off-state, and needs to be spaced the Dead Time of
t。
When main control chip U1 infects virus, the computer program controlling main control chip U1 output control signal is tampered,
Or when the computer program of intelligent digital power supply occurs that other are abnormal, main control chip U1 produces logical error so that master control
Chip U1 exports and violates above-mentioned operation rule 1,2,3 or 4 to the control signal of power conversion circuit W1, causes: power switch S1,
The switching frequency of S2 is beyond the scope of 25Hz ~ 100Hz；Or the switching frequency of power switch S3, S4 exceeds 10KHz ~ 40KHz
Scope；Or power switch S1, S2 simultaneously turn on, or the time of power switch S1, S2 conducting is less than Dead Time t=
250ns；Or power switch S3, S4 simultaneously turn on, or the time of power switch S3, S4 conducting is less than Dead Time t=
250ns.Now, if the behavior that monitoring devices U2 monitors this violation operation rule can cause controlled circuit to there is bridgc arm short
Danger, controls on-off circuit D1 by signal output port OE the most immediately and disconnects, thus block main control chip U1 and export to power
The control signal of translation circuit W1, so that the four of power conversion circuit W1 power switch S1, S2, S3, S4 are completely in disconnection
State, it is to avoid power conversion circuit W1 or other power devices damage.After monitoring devices U2 block control signal, record this control
Signal processed violates number of times and the duration of operation rule.When in 1 prespecified minutes, the behavior of this violation surpasses
When crossing 10 times, monitoring devices U2 restarts letter by signal output port B2 to the receiver port B1 transmission of main control chip U1
Number, make the computer program in main control chip U1 restart.If the main control chip U1 of intelligent digital power supply is running computer journey
During 1.0 version of sequence, the control signal of output is normal, and after being upgraded to 2.0 versions, program is leaky or unstable, causes main
Control chip U1 produces logical error, exports and violates above-mentioned operation rule 1,2,3 or 4 to the control signal of power conversion circuit W1,
Then monitoring devices U2 sends port PA1 by signal and transmits reset signal to the reseting port RST of main control chip U1, makes master control core
The computer program of sheet U1 returns to 1.0 versions in the early time.Meanwhile, monitoring devices U2 transmits alarm by signal output port A2
Signal is to the receiver port A1 of main control chip U1, it is also possible to externally signal an alert, so that intelligent digital power supply report
Fault message reminds user to have abnormal conditions, and the fault of intelligent digital power supply can be processed by user in time, keeps away
Exempt from intelligent digital power supply damage or cause security incident.
For power switch S1, S2, S3, S4 of power conversion circuit W1, deviate rated operation frequency in its operating frequency
Certain limit, also can be to the workability of power conversion circuit W1 but the degree of deviation is also unlikely to violate operation rule 1,2
Impact can be produced, therefore for operation rule 1 and operation rule 2, have again an operation rule of refinement:
Operation rule 1.1: actual switch frequency sf1 of power switch S1 and S2 meets: 40Hz≤sf1≤60Hz；
Operation rule 2.1: actual switch frequency sf2 of power switch S3 and S4 meets: 18KHz≤sf2≤22KHz.
Monitoring devices U2 monitors main control chip U1 and exports the control signal to power conversion circuit W1 and violate above-mentioned fortune
Line discipline 5 or 6, now power conversion circuit W1 can also normally work, and therefore need not block immediately control signal.Monitor
Part U2 records this control signal and violates number of times and the duration of operation rule, when being somebody's turn to do in 1 prespecified minutes
When the behavior violated is more than 10 times, monitoring devices U2 transmits alarm signal to the letter of main control chip U1 by signal output port A2
Number receiving port A1, it is also possible to externally signal an alert, so that intelligent digital power supply report fault message reminds user
There are abnormal conditions.
Two, controlled circuit output relay group W2 as shown in Figure 1, extends controlled end by AND circuit D2, and one is subject to
Control end receives the control signal sending port CON1 from main control chip U1 signal, and another controlled end receives from monitoring devices
U2 signal sends the control signal of port CON2.When the two control signal is all high level, the high electricity of AND circuit D2 output
Flat, thus connect output relay group W2；When to have one in the two control signal be low level, AND circuit D2 exports low electricity
Flat, thus disconnect output relay group W2.Monitoring devices U2 monitors main control chip U1 in real time by receiver port PA6 port
The control signal of port CON1 port output is sent by signal.
The circuit of this intelligent digital power supply also includes that the voltage sampling the input voltage of power conversion circuit W1 is adopted
Sample circuit V1, the voltage sampling the output voltage of power conversion circuit W1 and the input voltage of output relay group W2 is adopted
Sample circuit V2, the voltage sampling circuit V3 that the output voltage of output relay group W2 is sampled.Voltage sampling circuit V1,
V2, V3 can use difference channel or Hall voltage sensor etc. to realize.
The signal that voltage sampling circuit V1, V2, V3 are respectively outputted to main control chip U1 the voltage signal sampled receives
Receiver port AD21, AD22, AD23 of port AD11, AD12, AD13 and monitoring devices U2, main control chip U1 and monitor
According to the sampled voltage of voltage sampling circuit V1, V2, V3, part U2 judges that the power conversion circuit W1 of intelligent digital power supply, output continue
The running status of the circuit such as electrical equipment group W2.If power conversion circuit W1 normal operation, then AND circuit D2 should export high level, makes
Output relay group W2 is in an ON state；If power conversion circuit W1 exception or intelligent digital power supply are due to other abnormal feelings
Condition, as low in input voltage and be in malfunction, then AND circuit D2 answers output low level, makes output relay group W2 be in disconnected
Open state.Therefore, according to the operation logic of output relay group W2, main control chip U1 is exported to the control of output relay group W2
Signal processed arranges following operation rule:
Operation rule 1: if power conversion circuit W1 works well, then signal send port CON1 should export high level give with door
Circuit D2, connects output relay group W2；
Operation rule 2: if power conversion circuit W1 operating is abnormal, then signal send port CON1 should output low level to door
Circuit D2, disconnects output relay group W2；
Operation rule 3: if intelligent digital power supply is in malfunction, then signal send port CON1 should output low level give with
Gate circuit D2, disconnects output relay group W2.
When power conversion circuit W1 works well, main control chip U1 should send port CON1 output height by signal to this
Level, does not the most but have output signal or outputs low level, i.e. violates operation rule 1, causes output relay group W2
Cannot normally work, monitoring devices U2 just makes the computer program in main control chip U1 restart, more whether Monitoring and Controlling signal can
Recovering normal, if still cannot normally work, then transmission alarm signal is to main control chip U1 or external signal an alert, from
And make intelligent digital power supply report fault message to remind user to have abnormal conditions.
When power conversion circuit W1 operating is abnormal, or intelligent digital power supply is in malfunction, and main body circuit occurs different
Often, main control chip U1 should send port CON1 output low level by signal to this, does not the most but have output signal or defeated
Go out high level, i.e. violated operation rule 2 or 3, cause the electric energy that there is outside to be carried out instead by output relay group W2
The danger filled, monitoring devices U2 just replaces main control chip U1 to provide low level to AND circuit D2 so that AND circuit D2 output
Low level, thus control output relay group W2 and disconnect, it is to avoid intelligent digital power supply damages or causes security incident.
Claims (25)
1. possessing the intelligent digital power supply of computer program monitoring function, including digital power body, digital power body includes
Main body circuit and main control chip U1, have controlled circuit in main body circuit, main control chip U1 gives under control of a computer program should
Controlled circuit output control signal, this intelligent digital power source features is: include the monitoring monitored this control signal in real time
Device U2, if monitoring devices U2 monitors this control signal and violates default operation rule, is carried out the process action of correspondence；
Digital power body is provided with the mounting connection structure for being mounted and electrically connected monitoring devices U2.
Intelligent digital power supply the most according to claim 1, in digital power body, main control chip U1 and controlled circuit it
Between connect have the on-off circuit D1 controlled by monitoring devices U2.
Intelligent digital power supply the most according to claim 1 and 2, main body circuit includes power conversion circuit W1, and this power becomes
Change the least one set brachium pontis that circuit W1 includes being connected between power supply input positive terminal and power supply input negative pole end, the power in brachium pontis
Controlled circuit described in open relation.
Intelligent digital power supply the most according to claim 1, a controlled end of controlled circuit receives from main control chip U1
Described control signal, controlled circuit is additionally provided with second controlled end, and monitoring devices U2 controls this by second controlled end and is subject to
Control circuit.
5., according to the intelligent digital power supply described in claim 1 or 4, main body circuit includes for externally exporting the defeated of digital power
Go out relay group W2, the controlled circuit described in this output relay group W2 system.
A kind of intelligent digital power supply the most according to claim 1, the signal sending end mouth PA1 of monitoring devices U2 connects master control
The reseting port RST of chip U1.
Intelligent digital power supply the most according to claim 1, the signal output port of monitoring devices U2 connects main control chip U1
Receiver port.
Intelligent digital power supply the most according to claim 1, described monitoring devices U2 is One Time Programmable chip.
9. digital power body, is characterized in that being the numeral electricity in the intelligent digital power supply according to any one of claim 1～8
Source body.
10. the monitoring method of pair intelligent digital power supply, monitors in real time to the control signal of main control chip U1 output, if monitoring
Violate default operation rule to this control signal, be carried out the process action of correspondence.
11. monitoring methods according to claim 10, described process action is to block this control signal.
12. monitoring methods according to claim 11, to the intelligent digital power supply described in claim 3, " block this control
Signal " the corresponding following situation of this process action: described control signal violates default operation rule, causes there is brachium pontis
The danger of short circuit.
13. monitoring methods according to claim 10, wherein:
Described control signal violates default operation rule, and specifically, main body circuit occurs abnormal, and main control chip U1 should to this
The most do not export when exporting certain control signal；Corresponding process action is that instead of main control chip U1 and provides this control signal.
14. monitoring methods according to claim 13, to the intelligent digital power supply described in claim 5, " replace master control core
Sheet U1 provides this control signal " the corresponding following situation of this process action: described control signal violates default operation rule
Then, cause the electric energy that there is outside by the anti-danger filled of described output relay group W2.
15. monitoring methods according to claim 10, described process action is: make the computer program in main control chip U1
Restart.
16. monitoring methods according to claim 10, described process action is: make the computer program of main control chip U1 move back
Return to version in the early time.
17. monitoring methods according to claim 10, described process action is: externally and/or send main control chip U1
Alarm signal.
The supervising device of 18. pairs of intelligent digital power supplys, is characterized in that: include monitoring device, the control to main control chip U1 output
Signal is monitored in real time, if monitoring this control signal to violate default operation rule, is carried out the process action of correspondence.
19. supervising devices according to claim 18, described process action is to block this control signal.
20. supervising devices according to claim 19, to the intelligent digital power supply described in claim 3, in monitoring device
Corresponding following situation of this process action of " blocking this control signal ": described control signal violates default operation rule, leads
Cause to also exist the danger of bridgc arm short.
21. supervising devices according to claim 18, monitoring device monitors described control signal and violates default fortune
Line discipline, specifically, main body circuit occurs abnormal, and main control chip U1 should export certain control signal and the most not export this；
Corresponding process action is that instead of main control chip U1 and provides this control signal.
22. supervising devices according to claim 21, to the intelligent digital power supply described in claim 5, in monitoring device
Corresponding following situation of " replacement main control chip U1 provides this control signal " this process action: described control signal violates pre-
If operation rule, cause also existing the electric energy of outside by the anti-danger filled of described output relay group W2.
23. supervising devices according to claim 18, described process action is: make the computer program in main control chip U1
Restart.
24. supervising devices according to claim 18, described process action is: it makes the computer program of main control chip U1
Return to version in the early time.
25. supervising devices according to claim 18, described process action is: externally and/or send main control chip U1
Alarm signal.
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