CN108802630A - A kind of initiative alarming circuit of bus power source - Google Patents
A kind of initiative alarming circuit of bus power source Download PDFInfo
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- CN108802630A CN108802630A CN201810535583.6A CN201810535583A CN108802630A CN 108802630 A CN108802630 A CN 108802630A CN 201810535583 A CN201810535583 A CN 201810535583A CN 108802630 A CN108802630 A CN 108802630A
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- 238000004804 winding Methods 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 7
- 230000007257 malfunction Effects 0.000 abstract description 2
- 238000007600 charging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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Abstract
The invention belongs to parallel connection direct power supply system technical fields, disclose a kind of bus power source initiative alarming circuit that can quickly search direct-current switch power supply module failure, including multiple sub- warning circuits；The sub- warning circuit is arranged in a one-to-one correspondence respectively in the direct-current switch power supply module in bus power source；The direct-current switch power supply module includes high frequency transformer；The sub- warning circuit is electrically connected with the vice-side winding of high frequency transformer；The sub- warning circuit includes charge-discharge circuit, switching circuit, power supply and alarm；The power supply, alarm and switching circuit in series；When direct-current switch power supply module is in normal operating conditions, charge-discharge circuit carries out charge and discharge according to the high-frequency PWM signal of direct-current switch power supply module, and switching circuit is off；When direct-current switch power supply module is in malfunction, the high-frequency PWM blackout of direct-current switch power supply module, charge-discharge circuit drives the switching circuit to be in closed state, and alarm powers alarm.
Description
Technical field
The invention belongs to parallel connection direct power supply system technical fields, and in particular to a kind of initiative alarming electricity of bus power source
Road.
Background technology
Power supply is the important component of various electronic equipments, it like human body heart, just for all electric class equipment
Often operation provides power.With the fast development of various electronic equipments, electric appliance, the quality power that high efficiency, performance are stablized
There is great demand.And Switching Power Supply is set with small-sized, light weight and efficient the feature almost all of electronics that is widely used
It is standby.
The extensive use of a large amount of electronic equipments, especially computer, communication and space station etc., it is desired to set up a great Rong
Amount, safe and reliable, uninterrupted power supply power-supply system.If using separate unit power supply power supply, which certainly will handle huge
Power, therefore electric stress is big, to which the raising to the selection of power device, switching frequency and power density brings difficulty.And
Once separate unit power failure, then cause whole system to be collapsed.For this purpose, being constituted using multiple direct-current switch power supply wired in parallel
Parallel connection direct power supply system, to provide the direction that high-power output is power technology development.In parallel connection direct power supply system,
Each resume module smaller power, solves the problems, such as that above-mentioned separate unit power supply encounters.
Spatially each direct-current switch power supply module is close to load for parallel connection direct power supply system, and power supply quality is high, by changing
The quantity of inversion of direct current switch power module meets the load of different capacity, flexible design, and each direct-current switch power supply module holds
By small electric stress, switching frequency can reach a megahertz grade, to improve the power density of system.But it is existing in parallel straight
Direct-current switch power supply module in stream power supply system does not have active alarming function.Once one of direct-current switch power supply module hair
Raw component failure, temperature be excessively high or the input voltage failures such as not enough, then be difficult investigate out it is specific in parallel connection direct power supply system
The direct-current switch power supply module of failure.
Invention content
In order to solve the above problem of the existing technology, present invention aims at provide one kind can quickly search direct current
The bus power source initiative alarming circuit of switch power module failure.
The technical solution adopted in the present invention is：
A kind of initiative alarming circuit of bus power source, including multiple sub- warning circuits；The sub- warning circuit difference is one by one
It is correspondingly arranged in the direct-current switch power supply module in bus power source；The direct-current switch power supply module includes high frequency transformer；
The sub- warning circuit is electrically connected with high frequency transformer vice-side winding；
The sub- warning circuit includes charge-discharge circuit, switching circuit, power supply and alarm；The power supply, alarm and
Switching circuit in series；When direct-current switch power supply module is in normal operating conditions, charge-discharge circuit is according to direct-current switch power supply mould
The high-frequency PWM signal of block carries out charge and discharge, and switching circuit is off；Direct-current switch power supply module is in malfunction
When, the high-frequency PWM blackout of direct-current switch power supply module, charge-discharge circuit drives the switching circuit to be in closed state,
Alarm powers alarm.
Further, the charge-discharge circuit includes the first diode, first resistor and the first capacitance；One or two pole
The anode and cathode of pipe is connect with the both ends of first resistor respectively；The binding site of the cathode and first resistor of first diode
It is connect with the different name end of high frequency transformer vice-side winding, the anode of first diode and the binding site and first of first resistor
One end of capacitance connects；The other end of first capacitance is grounded.
Further, the switching circuit includes second resistance, 3rd resistor and triode；The sun of first diode
The binding site of pole, first resistor and the first capacitance is connect with one end of the second resistance, the other end of second resistance and three poles
The base stage of pipe connects；The base stage of the triode and the binding site of second resistance are connect with one end of the 3rd resistor, third
The other end of resistance is grounded；The emitter of the triode is grounded；The collector of triode is connect with one end of the alarm,
The other end of the alarm is connect with the output end of the power supply.
Further, the alarm is buzzer；The both ends of the buzzer respectively with the output end of power supply and three poles
The collector of pipe connects.
Further, the alarm is light emitting diode；The output of the anode of the light emitting diode and the power supply
End connection, the cathode of light emitting diode are connect with switching circuit.
Further, the bus power source includes the direct-current switch power supply module that multiple output ends link together.
Further, the direct-current switch power supply module further includes filter circuit, switching tube and current rectifying and wave filtering circuit；It is described
The input terminal of filter circuit is the power input of direct-current switch power supply module；The output end of filter circuit is former with high frequency transformer
The different name end of side winding connects；Break-make between the Same Name of Ends and ground of the switch controlled high frequency transformer primary side winding；Institute
The Same Name of Ends for stating high frequency transformer vice-side winding is the input terminal of the current rectifying and wave filtering circuit, and the output end of current rectifying and wave filtering circuit is
The power output end of direct-current switch power supply module；The different name of the input terminal and high frequency transformer vice-side winding of the charge-discharge circuit
End connection.
Further, the filter circuit is the second capacitance.
Further, the current rectifying and wave filtering circuit includes third capacitance and the second diode；The both ends of the third capacitance
For the output end of current rectifying and wave filtering circuit；One end of third capacitance is connect with the Same Name of Ends of high frequency transformer vice-side winding, the other end
It is connect with the anode of the second diode；The cathode of second diode is connect with the different name end of high frequency transformer vice-side winding；It is described
The anode of second diode is grounded with the binding site of third capacitance.
Further, the switching tube is N-channel MOS pipe；The source electrode of the N-channel MOS pipe is grounded, N-channel MOS pipe
Drain electrode is connect with the Same Name of Ends of high frequency transformer vice-side winding；The grid of N-channel MOS pipe is that break-make controls signal terminal.
Beneficial effects of the present invention are：
The present invention detects direct-current switch power supply mould pwm signal in the block by charge-discharge circuit and judges direct-current switch power supply mould
Whether block is out of order, and when direct-current switch power supply module breaks down, charge-discharge circuit is opened by other direct currents of bus power source
Powered-down source module charging, and then switching circuit is made to be in closed state, to make alarm power alarm, realization is quickly found out out
The purpose of the direct-current switch power supply module of failure.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of bus power source；
Fig. 2 is the structural schematic diagram of the initiative alarming circuit in a kind of bus power source of the present invention；
When Fig. 3 is that direct-current switch power supply module is in normal condition, the voltage oscillogram of A points in this initiative alarming circuit.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment does further explaination to the present invention.
Embodiment 1：
As shown in Figs. 1-3, the present embodiment provides a kind of initiative alarming circuits of bus power source, including multiple sub- alarm electricity
Road；The sub- warning circuit is arranged in a one-to-one correspondence respectively in the direct-current switch power supply module in bus power source；The direct current is opened
Powered-down source module includes high frequency transformer T1；The sub- warning circuit is electrically connected with the vice-side winding of high frequency transformer T1；
The sub- warning circuit includes charge-discharge circuit, switching circuit, power supply and alarm Z1；The power supply, alarm
Z1 and switching circuit in series；When direct-current switch power supply module is in normal operating conditions, charge-discharge circuit is according to dc switch electricity
The high-frequency PWM signal of source module carries out charge and discharge, and switching circuit is off；Direct-current switch power supply module is in failure shape
When state, the high-frequency PWM blackout of direct-current switch power supply module, charge-discharge circuit drives the switching circuit to be in closed form
State, alarm Z1 power alarm.Power supply in the present embodiment is 12V DC power supply, can pass through the prior arts such as accumulator reality
It is existing.
As shown in Figure 1, the direct-current switch power supply module that bus power source, which includes multiple output ends, to link together.
Specifically, as illustrated in fig. 1 and 2, the direct-current switch power supply module further includes filter circuit, switching tube Q2 and rectification
Filter circuit；The input terminal of the filter circuit is the power input of direct-current switch power supply module；The output end of filter circuit
It is connect with the different name end of high frequency transformer T1 primary side windings；The switching tube Q2 controls the of the same name of high frequency transformer T1 primary side windings
Break-make between end and ground；The Same Name of Ends of the high frequency transformer T1 vice-side windings is the input terminal of the current rectifying and wave filtering circuit,
The output end of current rectifying and wave filtering circuit is the power output end of direct-current switch power supply module；The input terminal of the charge-discharge circuit and height
The different name end of frequency power transformer T1 vice-side windings connects.
In the present embodiment, as illustrated in fig. 1 and 2, the filter circuit is the second capacitance Cin.It is readily apparent that filtered electrical
Road can also use the capacitance of multiple parallel connections or RLC filter circuits to realize.
In the present embodiment, as illustrated in fig. 1 and 2, the current rectifying and wave filtering circuit includes third capacitance Co and the second diode D1；
The both ends of the third capacitance Co are the output end of current rectifying and wave filtering circuit；One end of third capacitance Co and high frequency transformer T1 pairs side
The Same Name of Ends of winding connects, and the other end is connect with the anode of the second diode D1；The cathode of second diode D1 and high frequency transformation
The different name end of device T1 vice-side windings connects；The anode of the second diode D1 is grounded with the binding site of third capacitance Co.It is aobvious and
It is clear to, the current rectifying and wave filtering circuit can also use other prior arts to realize.
In the present embodiment, as illustrated in fig. 1 and 2, the switching tube Q2 is N-channel MOS pipe；The source electrode of the N-channel MOS pipe
Ground connection, the drain electrode of N-channel MOS pipe are connect with the Same Name of Ends of high frequency transformer T1 vice-side windings；The grid of N-channel MOS pipe is logical
Disconnected control signal terminal.It is readily apparent that switching tube Q2 can also be P-channel metal-oxide-semiconductor or IGBT pipes.
Specifically, in the present embodiment, as shown in Fig. 2, the charge-discharge circuit includes the first diode D2, first resistor R1
With the first capacitance C2；The anode and cathode of the first diode D2 is connect with the both ends of first resistor R1 respectively；Described first
The cathode of diode D2 is connect with the binding site of first resistor R1 with the different name end of high frequency transformer T1 vice-side windings, and described first
The anode of diode D2 is connect with the binding site of first resistor R1 with one end of the first capacitance C2；Another termination of first capacitance C2
Ground.
Specifically, in the present embodiment, as shown in Fig. 2, the switching circuit includes second resistance R2,3rd resistor R3 and three
Pole pipe Q1；The anode of the first diode D2, the binding site of first resistor R1 and the first capacitance C2 and the second resistance R2
One end connection, the other end of second resistance R2 connect with the base stage of triode Q1；The base stage of the triode Q1 and the second electricity
The binding site of resistance R2 is connect with one end of the 3rd resistor R3, the other end ground connection of 3rd resistor R3；The triode Q1's
Emitter is grounded；The collector of triode Q1 is connect with one end of the alarm Z1, the other end of the alarm Z1 and institute
State the output end connection of power supply.
Specifically, in the present embodiment, as shown in Fig. 2, the alarm Z1 is buzzer；Distinguish at the both ends of the buzzer
It is connect with the collector of the output end of power supply and triode Q1.
Operation principle：
When direct-current switch power supply module is in normal operating conditions, the A at the different name end of high frequency transformer T1 vice-side windings
For the point i.e. waveform of the input terminal of charge-discharge circuit as shown in figure 3, A point voltages are timing, electric current gives first by first resistor R1
Capacitance C2 chargings；When A point voltages are negative, the first capacitance C2 is discharged by D2；Pwm signal is high-frequency PWM signal, therefore first is electric
The charge and discharge time for holding C2 is all very short.The value of first capacitance C2 and the resistance value of first resistor R1 are bigger, therefore, the first electricity
The charging current for holding C2 is much smaller than discharge current, and the voltage of the first capacitance C2 fluctuates in relatively low range always, the first capacitance
When C2 discharges, discharge voltage passes through R2, and R3 partial pressures can not be such that triode Q1 is connected, and alarm Z1 can not power alarm.
When direct-current switch power supply module breaks down, the pwm signal of direct-current switch power supply module will stop exporting, high frequency
Transformer T1 vice-side windings are in short-circuit condition, and to which A point voltages are equal to bus DC voltage, bus voltage passes through first resistor R1
The voltage that the first capacitance C2 is charged to the first capacitance C2 is equal to bus voltage；The voltage of first capacitance C2 passes through R2, R3 partial pressures
It is output to the base stage of triode Q1 afterwards, the voltage between the base stage of triode Q1 and the emitter of triode Q1 is made to be higher than electric conduction
Pressure, triode Q1 conductings, alarm Z1 power alarm, and it is the dc switch to break down to find out and send out the alarm Z1 of alarm
Power module.It should be noted that as those skilled in the art, as long as it is to be understood that by the way that third electricity is reasonably arranged
Hold the value of Co, so that it may to allow other direct-current switch power supply modules to export to the output line of the direct-current switch power supply module to break down
Wave is small to ignoring, i.e., when direct-current switch power supply module breaks down, the waveform substantially straight line of A point voltages.
Embodiment 2：
The present embodiment is with embodiment 1 only difference is that the alarm Z1 is light emitting diode；Described luminous two
The anode of pole pipe is connect with the output end of the power supply, and the cathode of light emitting diode is connect with switching circuit.It is readily apparent that
Alarm Z1 can also be concatenated buzzer and light emitting diode, can also be other existing audible-visual annunciator Z1 etc..
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention
The product of kind form.Above-mentioned specific implementation mode should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention
Range should be subject to be defined in claims, and specification can be used for interpreting the claims.
Claims (10)
1. a kind of initiative alarming circuit of bus power source, it is characterised in that：Including multiple sub- warning circuits；The sub- warning circuit
It is arranged in a one-to-one correspondence respectively in the direct-current switch power supply module in bus power source；The direct-current switch power supply module includes high frequency
Transformer (T1)；The sub- warning circuit is electrically connected with the vice-side winding of high frequency transformer (T1)；
The sub- warning circuit includes charge-discharge circuit, switching circuit, power supply and alarm (Z1)；The power supply, alarm
(Z1) and switching circuit in series；When direct-current switch power supply module is in normal operating conditions, charge-discharge circuit is according to dc switch
The high-frequency PWM signal of power module carries out charge and discharge, and switching circuit is off；Direct-current switch power supply module is in failure
When state, the high-frequency PWM blackout of direct-current switch power supply module, charge-discharge circuit drives the switching circuit to be in closed form
State, alarm (Z1) power alarm.
2. a kind of initiative alarming circuit of bus power source according to claim 1, it is characterised in that：The charge-discharge circuit
Including the first diode (D2), first resistor (R1) and the first capacitance (C2)；The anode and cathode of first diode (D2)
It is connect respectively with the both ends of first resistor (R1)；The cathode of first diode (D2) and the binding site of first resistor (R1) with
The different name end of high frequency transformer (T1) vice-side winding connects, the knot of the anode and first resistor (R1) of first diode (D2)
Chalaza is connect with the one end of the first capacitance (C2)；The other end of first capacitance (C2) is grounded.
3. a kind of initiative alarming circuit of bus power source according to claim 2, it is characterised in that：The switching circuit packet
Include second resistance (R2), 3rd resistor (R3) and triode (Q1)；The anode of first diode (D2), first resistor (R1)
It is connect with the binding site of the first capacitance (C2) with one end of the second resistance (R2), the other end of second resistance (R2) and three poles
Manage the base stage connection of (Q1)；The base stage of the triode (Q1) and the binding site of second resistance (R2) and the 3rd resistor (R3)
One end connection, 3rd resistor (R3) the other end ground connection；The emitter of the triode (Q1) is grounded；The collection of triode (Q1)
Electrode is connect with the one end of the alarm (Z1), and the other end of the alarm (Z1) is connect with the output end of the power supply.
4. a kind of initiative alarming circuit of bus power source according to claim 3, it is characterised in that：The alarm (Z1)
For buzzer；The both ends of the buzzer are connect with the collector of the output end of power supply and triode (Q1) respectively.
5. a kind of initiative alarming circuit of bus power source according to claim 1, it is characterised in that：The alarm (Z1)
For light emitting diode；The anode of the light emitting diode is connect with the output end of the power supply, the cathode of light emitting diode with open
Powered-down road connection.
6. a kind of initiative alarming circuit of bus power source according to claim 1, it is characterised in that：The bus power source packet
Include the direct-current switch power supply module that multiple output ends link together.
7. a kind of initiative alarming circuit of bus power source according to claim 1 or 6, it is characterised in that：The direct current is opened
Powered-down source module further includes filter circuit, switching tube (Q2) and current rectifying and wave filtering circuit；The input terminal of the filter circuit is direct current
The power input of switch power module；The output end of filter circuit connects with the different name end of high frequency transformer (T1) primary side winding
It connects；Break-make between the Same Name of Ends and ground of described switching tube (Q2) control high frequency transformer (T1) primary side winding；The high frequency becomes
The Same Name of Ends of depressor (T1) vice-side winding is the input terminal of the current rectifying and wave filtering circuit, and the output end of current rectifying and wave filtering circuit is direct current
The power output end of switch power module；The different name of the input terminal and high frequency transformer (T1) vice-side winding of the charge-discharge circuit
End connection.
8. a kind of initiative alarming circuit of bus power source according to claim 7, it is characterised in that：The filter circuit is
Second capacitance (Cin).
9. a kind of initiative alarming circuit of bus power source according to claim 7, it is characterised in that：The rectifying and wave-filtering electricity
Road includes third capacitance (Co) and the second diode (D1)；The both ends of the third capacitance (Co) are the output of current rectifying and wave filtering circuit
End；One end of third capacitance (Co) is connect with the Same Name of Ends of high frequency transformer (T1) vice-side winding, the other end and the second diode
(D1) anode connection；The cathode of second diode (D1) is connect with the different name end of high frequency transformer (T1) vice-side winding；It is described
The anode of second diode (D1) is grounded with the binding site of third capacitance (Co).
10. a kind of initiative alarming circuit of bus power source according to claim 7, it is characterised in that：The switching tube
(Q2) it is N-channel MOS pipe；The source electrode of the N-channel MOS pipe is grounded, and the drain electrode of N-channel MOS pipe and high frequency transformer (T1) are secondary
The Same Name of Ends of side winding connects；The grid of N-channel MOS pipe is that break-make controls signal terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535583.6A CN108802630A (en) | 2018-05-29 | 2018-05-29 | A kind of initiative alarming circuit of bus power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535583.6A CN108802630A (en) | 2018-05-29 | 2018-05-29 | A kind of initiative alarming circuit of bus power source |
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| Publication Number | Publication Date |
|---|---|
| CN108802630A true CN108802630A (en) | 2018-11-13 |
Family
ID=64089229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810535583.6A Pending CN108802630A (en) | 2018-05-29 | 2018-05-29 | A kind of initiative alarming circuit of bus power source |
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| Country | Link |
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| CN (1) | CN108802630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884552A (en) * | 2019-03-20 | 2019-06-14 | 浪潮商用机器有限公司 | Power supply test method and system |
| CN112946458A (en) * | 2021-02-22 | 2021-06-11 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
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| US4290057A (en) * | 1978-09-25 | 1981-09-15 | Knight Webster B | Sequential power distribution circuit |
| CN2426242Y (en) * | 2000-03-28 | 2001-04-04 | 张毅 | Acummulator state monitoring and open loop protection device for converting station |
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| CN208156170U (en) * | 2018-05-29 | 2018-11-27 | 大山科技有限公司 | A kind of initiative alarming circuit of bus power source |
| CN214176972U (en) * | 2020-12-31 | 2021-09-10 | 宁波石墨烯创新中心有限公司 | Low-voltage direct-current power supply and power supply system |
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| US4148020A (en) * | 1977-08-22 | 1979-04-03 | Siemer Dennis K | Fail-safe alarm system utilizing frequency modulated signal detection |
| US4290057A (en) * | 1978-09-25 | 1981-09-15 | Knight Webster B | Sequential power distribution circuit |
| CN2426242Y (en) * | 2000-03-28 | 2001-04-04 | 张毅 | Acummulator state monitoring and open loop protection device for converting station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884552A (en) * | 2019-03-20 | 2019-06-14 | 浪潮商用机器有限公司 | Power supply test method and system |
| CN112946458A (en) * | 2021-02-22 | 2021-06-11 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
| CN112946458B (en) * | 2021-02-22 | 2024-01-12 | 重庆四联测控技术有限公司 | Forced alarm current output system and method of pressure transmitter |
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