CN202634049U - Control circuit of multi-line power supply system - Google Patents
Control circuit of multi-line power supply system Download PDFInfo
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- CN202634049U CN202634049U CN 201220291308 CN201220291308U CN202634049U CN 202634049 U CN202634049 U CN 202634049U CN 201220291308 CN201220291308 CN 201220291308 CN 201220291308 U CN201220291308 U CN 201220291308U CN 202634049 U CN202634049 U CN 202634049U
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Abstract
The utility model relates to a multi-line power supply circuit and particularly relates to a multi-line power supply control circuit. The control circuit of a multi-line power supply system is provided for solving the problems in the prior art, a detection circuit is utilized for real-time precise acquisition of voltage and current data, the voltage and current data is conveyed to a signal control circuit for analysis, judgment and treatment, then the priority level of power supply of each line is set, control signals for on-off control of switches are output, power supply circuits in an abnormal working state are protected, and the switches are timely broken for protecting the power supply system, so that the requirements of the system on allocation, monitoring and protection of the power supply can be met, and the safety of the power supply system is improved. The control circuit of the multi-line power supply system comprises the signal control circuit, a sampling circuit and the switches, output signals of the sampling circuit are respectively input into the input end of the signal control circuit and the input ends of the switches, and the signals are output from the output end of the signal control circuit to the control ends of the switches. The control circuit disclosed by the utility model is mainly applied to the power supply system.
Description
Technical field
The utility model relates to the multiple-way supply circuit, relates in particular to a kind of multiple-way supply automatic control circuit.
Background technology
Along with the development of modern electronic technology, increasingly high requirement has been proposed for the fail safe of electric power system.Such as fields such as communication, program control, radar systems; Security requirement to electric power system is higher; Particularly unattended electronic equipment; Multiple supply power mode redundancy backup usually need be provided, and support equipment runs without interruption, and simultaneously electric power system is realized that intelligent monitoring and protection move to guarantee system safety normally.
To the unstable situation of input, each road power supply must provide protective circuit, to guarantee equipment safety operation.As shown in Figure 1, protective circuit is at each road power supply buses up-sampling and make judgement, in time brakes each way switch, the protection late-class circuit.Because the protective circuit decentralized control causes protective circuit to repeat, stand-by power consumption increases, and causes the energy and the wasting of resources.Protective circuit directly links to each other with power supply buses, and when busbar voltage was undesired, protective circuit was impaired easily, recovers just often when busbar voltage, and protective circuit can't realize from recovery.
The utility model content
The utility model technical problem to be solved is: to the problem of above-mentioned existence; A kind of multiple-way feed system control circuit is provided, utilizes the real-time exact acquisition voltage of testing circuit, current data, flow to signal control circuit and carry out after analysis and judgement handles; The priority level of each road power supply is set; The control signal of output control switch break-make makes the electric current of sample circuit collection or voltage signal output in the follow-up electric power system through switch, and abnormal power supply circuits of working are protected timely brake switch protection electric power system; Satisfy the requirement of system, the fail safe that has improved electric power system to power supply allotment, monitoring and protection.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of multiple-way feed system control circuit comprises signal control circuit, sample circuit, switch, and said sample circuit output signal is input to signal control circuit input, switch input terminal respectively, and the signal control circuit output outputs signal to the switch control end.
Said sample circuit is the two-way sample circuit at least, and said switch is a way switch at least, and a said switch is with even the road sample circuit is corresponding one by one.
When said sample circuit comprises first sample circuit, second sample circuit; Signal control circuit comprise first with the door P1; Switching circuit comprises first switch; Said two-way sample circuit output respectively with first with a door P1 two-way input, the first switching circuit input, said first is connected with the switching circuit control end with a door P1 output, the said first switching circuit output is exported signal; The first sample circuit output, the second sample circuit output are connected with first switch input terminal, first output switching terminal output signal.
When said sample circuit comprises first sample circuit, second sample circuit, the 3rd sample circuit, the 4th sample circuit, the 5th sample circuit, the 6th sample circuit; Said signal control circuit comprise first with a door P1, second with door P2, the 3rd with a door P3, the 4th with a door P4, the 5th with P5, inverter Q, NOR gate T; Said switching circuit comprises first switch, second switch, the 3rd switch; The said first sample circuit output, the second sampling output are connected with door P1 two inputs with first respectively; First is connected with P4 one input with the 4th after through not gate Q with door P1 output; First gives first switch with a door P1 output output control signal RC1, and first is connected with door P1 output AND T one input, and the 3rd sample circuit output, the 4th sample circuit output are connected with P2 two input with second respectively; Second leads an input to be connected with the 4th with a P4 with door P2 output; The 4th is connected with another input of door P4 output AND T, and second switch is given with a door P4 output control signal RC2 in ground four, and NOR gate T output is connected with P5 one input with the 5th; The 5th sample circuit output, the 6th sample circuit output are connected with door P3 two inputs with the 3rd respectively; The 3rd is connected with another input of door P5 with the 5th with door P3 output, and the 5th exports a control signal RC3 to the 3rd switch with a P5 output, and the first sample circuit output, the second sample circuit output are connected with first switch input terminal; The 3rd sample circuit output, the 4th sample circuit output are connected with the second switch input, and the 5th sample circuit output, the 6th sample circuit output are connected with the 3rd switch input terminal.
Said sample circuit comprises voltage sampling circuit or current sampling circuit.
Said voltage sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, Vin-power supply input port, the first comparator U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R the 10, the 11 resistance R 11, the first diode D1, the second diode D2, triode Q1, the first optocoupler U2, voltage sampling signal port, voltage output end mouth; 5Va+ power supply port, 5Va-power supply port are given the first comparator U1, second port, the power supply of the first comparator U1 the 7th port respectively; First resistance R 1,2 series connection of second resistance R are supplied power between the input port with Vin+ power supply input port, Vin-; The 3rd resistance R 3,4 series connection of the 4th resistance R are also parallelly connected with first resistance R 1, second resistance R 2; First resistance R 1 is connected with the first comparator U1 the 8th port, the first comparator U1 the 3rd port respectively with the 4th resistance R 4 series connection ends with second resistance R, 2 series connection ends, the 3rd resistance R 3; The 5th resistance R 5,6 series connection of the 6th resistance R are supplied power between the port with 5Va+ power supply port, 5Va-; The 5th resistance R 5 is connected with the first comparator U1 five-port, the first comparator U1 the 6th port respectively with the 6th resistance R 6 series connection ends; 5Va+ power supply port is connected with the first comparator U1, first port through the 7th resistance R 7; 5Va+ power supply port is connected with the first comparator U1 the 4th port through the 8th resistance R 8; The first comparator U1, first port is connected with triode Q1 base stage through diode D2, the 9th resistance R 9 successively; Comparator the 4th port is connected with triode Q1 base stage through diode D2, the 9th resistance R 9 successively; 5Va+ power supply port is connected with transistor collector through the tenth resistance R 10; The Vin-feeder ear is connected with triode Q1 emitter, and the Vin-feeder ear is connected with the first optocoupler U2, second port through the 11 resistance R 11, and triode Q1 collector electrode is connected with the first optocoupler U2, first port; The first optocoupler U2 the 3rd port is connected with 5Vb+ power supply port; The first optocoupler U2 the 4th port is connected with 5Vb-power supply port through the 12 resistance R 12, and the first optocoupler U2 the 4th port is the voltage output end mouth, and the voltage output end mouth is connected with signal control circuit.
Said current sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, the Vin-input port of supplying power; Amplifier U3, the second comparator U4; The 21 resistance R the 21, the 22 resistance R the 22, the 23 resistance R the 23, the 24 resistance R the 24, the 25 resistance R the 25, the 28 resistance R the 28, the 29 resistance R 29, current output terminal mouth; 5Va+ power supply port is connected with amplifier U3 second port, the second comparator U4, second port; 5Va+ power supply port is connected with amplifier first port through the 24 resistance R 24; 5Va+ power supply port is connected with the second comparator U4, first port through the 25 resistance R 25; 5Va-power supply port is connected with amplifier U3 the 7th port, the second comparator U4 the 7th port respectively; The Vin+ input port is connected with amplifier U3 the 3rd port, and the Vin+ input port is connected with amplifier U3 five-port through the 29 resistance R 29, and amplifier U3 first port is connected with the second optocoupler U5 the 3rd port; Between the 21 resistance R the 21, the 22 resistance R 22 series connection and 5Va+ power supply port, the 5Va-power supply port; Vin-power supply input port is connected with 5Va-power supply port, and Vin+ power supply port is connected with the 29 resistance R the 29, the 27 resistance R 27 links, and the 21 resistance R 21 is connected with the second optocoupler U5 five-port with the 22 resistance R 22 links; 5Va-power supply port is connected with the second optocoupler U5, second port through the 28 resistance R 28; The second comparator U4, first port is connected with the second optocoupler U5, first port, the second optocoupler U5 the 3rd port with is connected with 5Vb+ power supply port, 5Vb-power supply port passes through the 23 port R23 and is connected with the second optocoupler U5 the 4th port; The second optocoupler U5 the 4th port is the current output terminal mouth, and the current output terminal mouth is connected with signal control circuit.
Said current sampling circuit also comprises the 26 resistance R the 26, the 27 resistance R 27; The Vin+ input port is connected with amplifier U3 the 3rd port through the 26 resistance R 26, and the Vin+ input port is connected with amplifier U3 five-port through the 29 resistance R the 29, the 27 resistance R 27.
Can find out that from the architectural feature of above-mentioned the utility model its advantage is
Make six road signal acquisition circuits output signal that priority arranged through signal control circuit through combination with door, NOR gate, not gate; What priority was the highest is first sample circuit, second sample circuit; Next is the 3rd sample circuit, the 4th sample circuit, is the 5th sample circuit, the 6th sample circuit at last.Realized the function that electric power system is allocated power supply automatically.Make the electric current or the voltage signal of sample circuit collection output in the follow-up electric power system through switch; Abnormal power supply circuits of working are protected timely brake switch protection electric power system; Satisfy the requirement of system, the fail safe that has improved electric power system to power supply allotment, monitoring and protection.
Description of drawings
The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is an electric supply system control chart of the prior art;
Fig. 2 is the utility model theory diagram;
Fig. 3 is a signal control circuit;
Fig. 4 is a voltage sampling circuit;
Fig. 5 is a current sampling circuit.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The first comparator U1, first port is first output port; The first comparator U1 the 3rd port is the supply power voltage input port, and the first comparator U1 five-port is the first input reference voltage end, and the first comparator U1 the 4th port is second output port; The first comparator U1 the 6th port is second input port; The first comparator U1 the 8th port is the second input reference voltage end, and the first comparator U1, second port is positive feeder ear, and the first comparator U1 the 7th port is negative feeder ear.
The first optocoupler U2, first port is the light-emitting diodes tube anode, and the first optocoupler U2, second port is the light-emitting diodes tube cathode, the first optocoupler U2 the 3rd port transistor collector, and the first optocoupler U2 the 4th port is a transistor emitter.
Amplifier U3 first port is an output port; Amplifier U3 second port is positive feeder ear; Amplifier U3 the 3rd port is a sampling resistor R29 voltage drop anode, and amplifier U3 five-port is a sampling resistor R29 voltage drop negative terminal, and amplifier U3 the 7th port is negative feeder ear.
The second comparator U4, first port is an output; The second comparator U4, second port is positive feeder ear; The second comparator U4 the 3rd port is an input amplifier U3 output signal end, and the second comparator U4 five-port is the input reference voltage end, and the second comparator U4 the 7th port is negative feeder ear.
The second optocoupler U5, first port is the light-emitting diodes tube anode, and the second optocoupler U5, second port is the light-emitting diodes tube cathode, and the second optocoupler U5 the 3rd port is a transistor collector, and the second optocoupler U5 the 4th port is a transistor emitter.
As shown in Figure 2; A kind of multiple-way feed system control circuit; Comprise signal control circuit, sample circuit, switch, said sample circuit output signal is input to signal control circuit input, switch input terminal respectively, and the signal control circuit output outputs signal to the switch control end.
Preferred embodiment one, said sample circuit are the two-way sample circuit at least, and said switch is a way switch at least, and a said switch is with even the road sample circuit is corresponding one by one.
Preferably embodiment two; When sample circuit comprises first sample circuit, second sample circuit; Signal control circuit comprise first with a door P1, switching circuit comprises first switch, said two-way sample circuit output respectively with first with a door P1 two-way input, the first switching circuit input; Said first is connected with the switching circuit control end with a door P1 output; Said first switching circuit output output signal, the first sample circuit output, the second sample circuit output are connected with first switch input terminal, first output switching terminal output signal.
Preferred embodiment three; When comprising first sample circuit, second sample circuit, the 3rd sample circuit, the 4th sample circuit, the 5th sample circuit, the 6th sample circuit like Fig. 3 sample circuit; Said signal control circuit comprise first with a door P1, second with door P2, the 3rd with a door P3, the 4th with a door P4, the 5th with P5, inverter Q, NOR gate T; Said switching circuit comprises first switch, second switch, the 3rd switch; The said first sample circuit output, the second sampling output are connected with door P1 two inputs with first respectively; First is connected with P4 one input with the 4th after through not gate Q with door P1 output; First gives first switch with a door P1 output output control signal RC1, and first is connected with door P1 output AND T one input, and the 3rd sample circuit output, the 4th sample circuit output are connected with P2 two input with second respectively; Second leads an input to be connected with the 4th with a P4 with door P2 output; The 4th is connected with another input of door P4 output AND T, and second switch is given with a door P4 output control signal RC2 in ground four, and NOR gate T output is connected with P5 one input with the 5th; The 5th sample circuit output, the 6th sample circuit output are connected with door P3 two inputs with the 3rd respectively; The 3rd is connected with another input of door P5 with the 5th with door P3 output, and the 5th exports a control signal RC3 to the 3rd switch with a P5 output, and the first sample circuit output, the second sample circuit output are connected with first switch input terminal; The 3rd sample circuit output, the 4th sample circuit output are connected with the second switch input, and the 5th sample circuit output, the 6th sample circuit output are connected with the 3rd switch input terminal.
First with a door P1, second with door P2, the 3rd with a door P3, the 4th with a door P4, the 5th with a door P5 effect be that exporting signal is " 1 " when the two-way input signal is " 1 " entirely, be " 0 " otherwise export signal; The first NOR gate T is that the output signal is " 0 " entirely, otherwise is " 1 " entirely when the two paths of signals of input is " 1 " entirely.Not gate Q is when input signal is " 1 ", and the output signal is " 0 ", and when input signal was " 0 ", the output signal was " 1 ".
Said signal control circuit operation principle:
1) when the output of No. six sample circuits is " 1 " entirely; Signal control circuit through with the cooperating of door, NOR gate, not gate; Make the switch controlling signal RC1 that wins be " 1 "; Second switch control signal RC2 is " 0 ", and the 3rd switch controlling signal RC3 is " 0 ", and then first sample circuit, second sample circuit output signal are through the follow-up electric power system of output valve behind first switch closure.
2) be output as " 0 " when first sample circuit, second sample circuit; The 3rd sample circuit, the 4th sample circuit, the 5th sample circuit, when the 6th sample circuit output signal is " 1 "; Signal control circuit through with the cooperating of door, NOR gate, not gate; Make the switch controlling signal RC1 that wins be " 0 "; Second switch control signal RC2 is " 1 ", and the 3rd switch controlling signal RC3 is " 0 ", and then the 3rd sample circuit, the 4th sample circuit output signal are through the follow-up electric power system of output valve behind first switch closure.
3) be output as " 0 " when first sample circuit, second sample circuit, the 3rd sample circuit, the 4th sample circuit; When the 5th sample circuit, the 6th sample circuit output signal is " 1 "; Signal control circuit through with the cooperating of door, NOR gate, not gate; Make the switch controlling signal RC1 that wins be " 0 "; Second switch control signal RC2 is " 0 ", and the 3rd switch controlling signal RC3 is " 1 ", and then the 5th sample circuit, the 6th sample circuit output signal are through the follow-up electric power system of output valve behind first switch closure.
4) making first sample circuit in the sampled signal, the second sample circuit priority the highest through signal control circuit, secondly is exactly the 3rd sample circuit, the 4th sample circuit, is the 5th kind of circuit, the 6th sample circuit at last.Realized the automatic control of electric power system.The priority level of multiple-way supply is set as required, realizes the order of preferential power supply through control switch, and before cutting off current power supply circuits, open other power supply circuits of next stage, realize seamless control.Simultaneously, signal analysis and control circuit carry out real-time analysis and judgement to each road detection signal, in time each way switch are controlled.When abnormal condition appears in power supply circuits, control to next stage automatically and else be in the power supply circuits of normal condition, and report fault to system, when the power supply circuits of high priority recover just often, be formulated to the circuit supply of high priority automatically.
Preferred embodiment four, sample circuit comprise voltage sampling circuit or current sampling circuit.
Preferred embodiment five; Like Fig. 4; Voltage sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, Vin-power supply input port, the first comparator U1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R the 10, the 11 resistance R 11, the first diode D1, the second diode D2, triode Q1, the first optocoupler U2, voltage sampling signal port, voltage output end mouth; 5Va+ power supply port, 5Va-power supply port are given the first comparator U1, second port, the power supply of the first comparator U1 the 7th port respectively; First resistance R 1,2 series connection of second resistance R are supplied power between the input port with Vin+ power supply input port, Vin-; The 3rd resistance R 3,4 series connection of the 4th resistance R are also parallelly connected with first resistance R 1, second resistance R 2; First resistance R 1 is connected with the first comparator U1 the 8th port, the first comparator U1 the 3rd port respectively with the 4th resistance R 4 series connection ends with second resistance R, 2 series connection ends, the 3rd resistance R 3; The 5th resistance R 5,6 series connection of the 6th resistance R are supplied power between the port with 5Va+ power supply port, 5Va-; The 5th resistance R 5 is connected with the first comparator U1 five-port, the first comparator U1 the 6th port respectively with the 6th resistance R 6 series connection ends; 5Va+ power supply port is connected with the first comparator U1, first port through the 7th resistance R 7; 5Va+ power supply port is connected with the first comparator U1 the 4th port through the 8th resistance R 8, and the first comparator U1, first port is connected with triode Q1 base stage through diode D2, the 9th resistance R 9 successively, and comparator the 4th port is connected with triode Q1 base stage through diode D2, the 9th resistance R 9 successively; 5Va+ power supply port is connected with transistor collector through the tenth resistance R 10; The Vin-feeder ear is connected with triode Q1 emitter, and the Vin-feeder ear is connected with the first optocoupler U2, second port through the 11 resistance R 11, and triode Q1 collector electrode is connected with the first optocoupler U2, first port; The first optocoupler U2 the 3rd port is connected with 5Vb+ power supply port; The first optocoupler U2 the 4th port is connected with 5Vb-power supply port through the 12 resistance R 12, and the first optocoupler U2 the 4th port is the voltage output end mouth, and the voltage output end mouth is connected with signal control circuit.
The operation principle of voltage sampling circuit: adopt first resistance R 1, second resistance R 2 and the 3rd resistance R 3,4 pairs of 5Va+ feeder ears of the 4th resistance R confession piezoelectric voltage to carry out the dividing potential drop sampling; Compare with the reference voltage of the first comparator U1 (being set by the 5th resistance R 5, the 6th resistance R 6) respectively, forms a window voltage, for example 5Va+ power supply port, the 5Va-port input voltage of supplying power is that DC18V is to 36V; When supply power voltage in the window voltage that the first comparator U1 sets; The first comparator U1 is through the first diode D1, the second diode D2 output low level, not conducting of triode Q1, the first optocoupler U2 conducting; Voltage sampling circuit is exported high level to signal control circuit; When supply power voltage was higher than or be lower than the window voltage of first comparator U1 setting, the first comparator U1 was through the first diode D1 and second diode D2 output high level, triode Q1 conducting; The first not conducting of optocoupler U2, voltage sampling circuit is to the signal control circuit output low level.
Preferred embodiment six; Like Fig. 5; Said current sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, the Vin-input port of supplying power; Amplifier U3, the second comparator U4; The 21 resistance R the 21, the 22 resistance R the 22, the 23 resistance R the 23, the 24 resistance R the 24, the 25 resistance R the 25, the 28 resistance R the 28, the 29 resistance R 29, current output terminal mouth; 5Va+ power supply port is connected with amplifier U3 second port, the second comparator U4, second port, and 5Va+ power supply port is connected with amplifier first port through the 24 resistance R 24, and 5Va+ power supply port is connected with the second comparator U4, first port through the 25 resistance R 25; 5Va-power supply port is connected with amplifier U3 the 7th port, the second comparator U4 the 7th port respectively; The Vin+ input port is connected with amplifier U3 the 3rd port, and the Vin+ input port is connected with amplifier U3 five-port through the 29 resistance R 29, and amplifier U3 first port is connected with the second optocoupler U5 the 3rd port; Between the 21 resistance R the 21, the 22 resistance R 22 series connection and 5Va+ power supply port, the 5Va-power supply port; Vin-power supply input port is connected with 5Va-power supply port, and Vin+ power supply port is connected with the 29 resistance R the 29, the 27 resistance R 27 links, and the 21 resistance R 21 is connected with the second optocoupler U5 five-port with the 22 resistance R 22 links; 5Va-power supply port is connected with the second optocoupler U5, second port through the 28 resistance R 28; The second comparator U4, first port is connected with the second optocoupler U5, first port, the second optocoupler U5 the 3rd port with is connected with 5Vb+ power supply port, 5Vb-power supply port passes through the 23 port R23 and is connected with the second optocoupler U5 the 4th port; The second optocoupler U5 the 4th port is the current output terminal mouth, and the current output terminal mouth is connected with signal control circuit.Further; Said current sampling circuit also comprises the 26 resistance R the 26, the 27 resistance R 27; The Vin+ input port is connected with amplifier U3 the 3rd port through the 26 resistance R 26, and the Vin+ input port is connected with amplifier U3 five-port through the 29 resistance R the 29, the 27 resistance R 27.
The operation principle of current sampling circuit: adopt 29 pairs of current input signals of the 29 resistance R to sample; Obtain one with the linear voltage drop (tens millivolts) of input current; Utilize amplifier U3 to amplify this voltage, compare with the reference voltage of the second comparator U4 (setting) by the 21 resistance R the 21, the 22 resistance R 22.When the voltage drop that on the 29 resistance R 29, produces of input supply current is amplified the back less than the reference voltage of second comparator setting through amplifier U3; Second comparator U4 output high level makes the second optocoupler U5 conducting; Current sampling circuit is carried high level to signal control circuit; When the voltage drop that on the 29 resistance R 29, produces of input supply current is amplified the reference voltage that the back surpasses the setting of second comparator through amplifier U3; The second comparator U4 output low level, the second optical coupler U5 can't conducting, and current sampling circuit is carried low level to signal control circuit.
Disclosed all characteristics in this specification except mutually exclusive characteristic, all can make up by any way.
Disclosed arbitrary characteristic in this specification (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
Claims (8)
1. multiple-way feed system control circuit; It is characterized in that comprising signal control circuit, sample circuit, switch; Said sample circuit output signal is input to signal control circuit input, switch input terminal respectively, and the signal control circuit output outputs signal to the switch control end.
2. a kind of multiple-way feed system control circuit according to claim 1 is characterized in that said sample circuit is the two-way sample circuit at least, and said switch is a way switch at least, and a said switch is with even the road sample circuit is corresponding one by one.
3. a kind of multiple-way feed system control circuit according to claim 2; When it is characterized in that said sample circuit comprises first sample circuit, second sample circuit; Signal control circuit comprise first with door, switching circuit comprises first switch, said two-way sample circuit output respectively with first with a door two-way input, the first switching circuit input; Said first is connected with the switching circuit control end with gate output terminal; Said first switching circuit output output signal, the first sample circuit output, the second sample circuit output are connected with first switch input terminal, first output switching terminal output signal.
4. a kind of multiple-way feed system control circuit according to claim 3; When it is characterized in that said sample circuit comprises first sample circuit, second sample circuit, the 3rd sample circuit, the 4th sample circuit, the 5th sample circuit, the 6th sample circuit; Said signal control circuit comprise first with door, second with door, the 3rd with door, the 4th with door, the 5th and door, inverter, NOR gate; Said switching circuit comprises first switch, second switch, the 3rd switch; The said first sample circuit output, the second sampling output are connected with door two inputs with first respectively; First with gate output terminal through non-behind the door with the 4th with the door one input be connected; First gives first switch with gate output terminal output control signal, and first is connected with gate output terminal AND T one input, and the 3rd sample circuit output, the 4th sample circuit output are connected with two input with second respectively; Second is connected with the Men Lingyi input with the 4th with gate output terminal; The 4th is connected with another input of gate output terminal AND T, and second switch is given with a door output control signal in ground four, and NOR gate T output is connected with an input with the 5th; The 5th sample circuit output, the 6th sample circuit output are connected with door two inputs with the 3rd respectively; The 3rd is connected with another input of door with the 5th with gate output terminal, the 5th with gate output terminal output control signal to the 3rd switch, the first sample circuit output, the second sample circuit output are connected with first switch input terminal; The 3rd sample circuit output, the 4th sample circuit output are connected with the second switch input, and the 5th sample circuit output, the 6th sample circuit output are connected with the 3rd switch input terminal.
5. according to the described a kind of multiple-way feed system control circuit of one of claim 1 to 4, it is characterized in that said sample circuit comprises voltage sampling circuit or current sampling circuit.
6. a kind of multiple-way feed system control circuit according to claim 5; It is characterized in that said voltage sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, Vin-power supply input port, first comparator, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, first diode, second diode, triode, first optocoupler, voltage sampling signal port, voltage output end mouth; 5Va+ power supply port, 5Va-power supply port are given first comparator, second port, the power supply of first comparator the 7th port respectively; Between first resistance, the series connection of second resistance and Vin+ power supply input port, the Vin-power supply input port; The series connection of the 3rd resistance, the 4th resistance is also parallelly connected with first resistance, second resistance; First resistance is connected with first comparator the 8th port, first comparator the 3rd port respectively with the 4th resistance series connection end with second resistance series connection end, the 3rd resistance; Between the 5th resistance, the series connection of the 6th resistance and 5Va+ power supply port, the 5Va-power supply port; The 5th resistance R 5 is connected with the first comparator U1 five-port, the first comparator U1 the 6th port respectively with the 6th resistance R 6 series connection ends; 5Va+ power supply port is connected with first comparator, first port through the 7th resistance; 5Va+ power supply port is connected with first comparator the 4th port through the 8th resistance; First comparator, first port is connected with transistor base through diode, the 9th resistance successively; Comparator the 4th port is connected with transistor base through diode, the 9th resistance successively, and 5Va+ power supply port is connected with transistor collector through the tenth resistance, and the Vin-feeder ear is connected with transistor emitter; The Vin-feeder ear is connected with first optocoupler, second port through the 11 resistance; Transistor collector is connected with first optocoupler, first port, and first optocoupler the 3rd port is connected with 5Vb+ power supply port, and first optocoupler the 4th port is connected with 5Vb-power supply port through the 12 resistance; First optocoupler the 4th port is the voltage output end mouth, and the voltage output end mouth is connected with signal control circuit.
7. a kind of multiple-way feed system control circuit according to claim 5; It is characterized in that said current sampling circuit comprises 5Va+ power supply port, 5Va-power supply port, 5Vb+ power supply port, 5Vb-power supply port, Vin+ power supply input port, the Vin-input port of supplying power; Amplifier, second comparator; The 21 resistance, the 22 resistance, the 23 resistance, the 24 resistance, the 25 resistance, the 28 resistance, the 29 resistance, current output terminal mouth; 5Va+ power supply port is connected with amplifier second port, second comparator, second port, and 5Va+ power supply port is connected with amplifier first port through the 24 resistance, and 5Va+ power supply port is connected with second comparator, first port through the 25 resistance; 5Va-power supply port is connected with amplifier the 7th port, second comparator the 7th port respectively; The Vin+ input port is connected with amplifier the 3rd port, and the Vin+ input port is connected with the amplifier five-port through the 29 resistance, and amplifier first port is connected with second optocoupler the 3rd port; Between the 21 resistance, the series connection of the 22 resistance and 5Va+ power supply port, the 5Va-power supply port; Vin-power supply input port is connected with 5Va-power supply port, and Vin+ power supply port is connected with the 29 resistance, the 27 resistance link, and the 21 resistance is connected with the second optocoupler five-port with the 22 resistance link; 5Va-power supply port is connected with second optocoupler, second port through the 28 resistance; Second comparator, first port is connected with second optocoupler, first port, and second optocoupler the 3rd port is connected with 5Vb+ power supply port, and 5Vb-power supply port is connected with second optocoupler the 4th port through the 23 port; Second optocoupler the 4th port is the current output terminal mouth, and the current output terminal mouth is connected with signal control circuit.
8. a kind of multiple-way feed system control circuit according to claim 7; It is characterized in that said current sampling circuit also comprises the 26 resistance, the 27 resistance; The Vin+ input port is connected with amplifier the 3rd port through the 26 resistance, and the Vin+ input port is connected with the amplifier five-port through the 29 resistance, the 27 resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291308 CN202634049U (en) | 2012-06-20 | 2012-06-20 | Control circuit of multi-line power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291308 CN202634049U (en) | 2012-06-20 | 2012-06-20 | Control circuit of multi-line power supply system |
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| CN202634049U true CN202634049U (en) | 2012-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098719A (en) * | 2014-05-07 | 2015-11-25 | 神讯电脑(昆山)有限公司 | Error detecting apparatus and method with multiple protections |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098719A (en) * | 2014-05-07 | 2015-11-25 | 神讯电脑(昆山)有限公司 | Error detecting apparatus and method with multiple protections |
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