CN103023305B - Power source for display unit for driver of electric locomotive - Google Patents
Power source for display unit for driver of electric locomotive Download PDFInfo
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- CN103023305B CN103023305B CN201210563435.8A CN201210563435A CN103023305B CN 103023305 B CN103023305 B CN 103023305B CN 201210563435 A CN201210563435 A CN 201210563435A CN 103023305 B CN103023305 B CN 103023305B
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Abstract
The invention discloses a power source for a display unit for a driver of an electric locomotive. The power source comprises an input terminal V+, an input terminal V-, a filter circuit, a transient surge protection circuit, a DC-DC output circuit, an output terminal 5V+, an output terminal 5V-, an output terminal 12V+ and an output terminal 12V-. The transient surge protection circuit comprises resistors R1, R2, R3, R4, R5, R6, R7 and R8, voltage stabilizing diodes ZD1, ZD2, ZD3, ZD4 and ZD5, switch tubes Q1 and Q2, capacitors C3, C4, C5 and E3, diodes D1 and D2, a control chip U1, an output terminal DC+ and an output terminal DC-. The power source is high in interference resistance, output voltage precision and reliability and low in output voltage ripple and maintenance cost.
Description
Technical field
The present invention relates to a kind of electric locomotive driver display unit power supply.
Background technology
Driver display unit is the vitals of electric locomotive, is mainly used in the various information and the parameter that show locomotive running state in real time, so that trainman can promptly and accurately understand locomotive current operating situation, thus ensures the safe operation of locomotive; Existing electric locomotive driver display unit power acquisition purchases device with third party, expensive, input voltage range is narrow, poor anti jamming capability, peak voltage and surge voltage can not be suppressed, output voltage precision is low, output voltage ripple is high, reliability is low, maintenance cost is high.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of reliable and practical, cost-saving electric locomotive driver display unit power supply.
Technological means of the present invention is as follows:
A kind of electric locomotive driver display unit power supply, comprising:
Input terminal V+, input terminal V-, filter circuit, electrical surge protective circuit, DC-DC output circuit, lead-out terminal 5V+, lead-out terminal 5V-, lead-out terminal 12V+ and lead-out terminal 12V-;
Described filter circuit comprises self-recoverage fuse FUSE, piezo-resistance MOV, transient voltage suppressor diode TZ, piezo-resistance MOV, filter inductance L0, filter capacitor C0, common mode inductance L1, lead-out terminal LV+ and lead-out terminal LV-; Described input terminal V+ is connected with piezo-resistance MOV one end by self-recoverage fuse FUSE, and the described piezo-resistance MOV other end connects input terminal V-; Described piezo-resistance MOV two ends are also connected with transient voltage suppressor diode TZ and by filter inductance L0, filter capacitor C0 LC filter branch in series; Described filter capacitor C0 two ends connect lead-out terminal LV+ and lead-out terminal LV-respectively by two coils of common mode inductance L1;
Described electrical surge protective circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, voltage stabilizing didoe ZD1, ZD2, ZD3, ZD4, ZD5, switching tube Q1, Q2, electric capacity C3, C4, C5, E3, diode D1, D2, control chip U1, lead-out terminal DC+ and lead-out terminal DC-; Described resistance R4, voltage stabilizing didoe ZD1 and the mutual series connection of voltage stabilizing didoe ZD3 are between lead-out terminal LV+ and lead-out terminal LV-; Voltage stabilizing didoe ZD3 two ends are also connected with resistance R5; The grid of resistance R5 one end connecting valve pipe Q2, the source electrode of other end connecting valve pipe Q2; The drain electrode of described switching tube Q2 connects the anode of voltage stabilizing didoe ZD2; The negative electrode of described voltage stabilizing didoe ZD2 is the grid of connecting valve pipe Q1, the negative electrode of diode D1, the negative electrode of voltage stabilizing didoe ZD4 and resistance R2 respectively; The drain electrode of the other end connecting valve pipe Q1 of resistance R2 and lead-out terminal LV+; Described lead-out terminal LV+ passes through 4 pin and 8 pin, the negative electrode of voltage stabilizing didoe ZD5, the positive pole of electric capacity E3 and the resistance R6 of resistance R3 difference connection control chip U1; 2 pin of the other end connection control chip U1 of resistance R6,6 pin also pass through 7 pin of resistance R7 connection control chip U1; 2 pin, 6 pin of control chip U1 connect lead-out terminal LV-by electric capacity C4; 5 pin of control chip U1 connect lead-out terminal LV-by electric capacity C3; 1 pin of control chip U1 connects lead-out terminal LV-and lead-out terminal DC-respectively; The source electrode of described switching tube Q1 connects the anode of voltage stabilizing didoe ZD4, the anode of diode D2 and lead-out terminal DC+ respectively; The negative electrode of described diode D2 connects the anode of diode D1 and 3 pin of RC branch road connection control chip U1 by being made up of electric capacity C5 and resistance R8;
Described DC-DC output circuit comprises electric capacity CY1, CY2, CY3, CY4, CY5, CY6, inductance L 2, L3, resistance RS1, RS2 and power module U2, U3; 1 pin of described power module U2 connect respectively lead-out terminal DC+, power module U3 1 pin and be connected to ground by electric capacity CY1; 2 pin of described power module U2 connect 3 pin of power module U2, lead-out terminal DC-, 2 pin of power module U3,3 pin of power module U3 being connected to ground by electric capacity CY2 respectively; 8 pin of described power module U2 connect 7 pin and the lead-out terminal 5V+ of power module U2 respectively by inductance L 2; 6 pin of described power module U2 connect 7 pin of power module U2 by resistance RS1; 5 pin of described power module U2 connect 4 pin of power module U2, lead-out terminal 5V-being connected to ground by electric capacity CY4 and CY0 parallel with one another respectively; 8 pin of described power module U3 connect 7 pin and the lead-out terminal 12V+ of power module U3 respectively by inductance L 3; 6 pin of described power module U3 connect 7 pin of power module U3 by resistance RS2; 5 pin of described power module U3 connect 4 pin of power module U3, lead-out terminal 12V-being connected to ground by electric capacity CY6 respectively; 8 pin of described power module U2 and 8 pin of power module U3 are connected to ground respectively by electric capacity CY3 and electric capacity CY5;
Further, the 5V display branch road being connected to electric capacity E1 parallel with one another, electric capacity C1 between described lead-out terminal 5V+ and lead-out terminal 5V-and being made up of resistance RO and LED 0;
Further, the 12V display branch road being connected to electric capacity E2 parallel with one another, electric capacity C2 between described lead-out terminal 12V+ and lead-out terminal 12V-and being made up of resistance R1 and LED 1;
Further, described control chip U1 is NE555;
Further, described electric capacity CY1, CY2, CY3, CY4, CY5, CY6 are safety electric capacity.
Owing to have employed technique scheme, electric locomotive driver display unit power supply provided by the invention, by in conjunction with filter circuit, electrical surge protective circuit and DC-DC output circuit, realizing output voltage when input voltage range is 66 ~ 160V is that 5V and 12V is supplied to electric locomotive driver display unit, wide input voltage range, can absorb and suppress peak voltage and surge voltage, the direct transient voltage of 1800V of 50 μ s can be born simultaneously, filter circuit ensure that the input voltage that power module front end is level and smooth and stable in addition, electrical surge protective circuit achieves when input voltage is instantaneous more than it can be made during 160V to be clamped at 160V, when input voltage more than 160V and certain time time power cutoff module front end input voltage, thus the power module protected in DC-DC output circuit, antijamming capability of the present invention is strong, output voltage precision is high, output voltage ripple is low, reliability is high, maintenance cost is low.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the circuit theory diagrams of filter circuit of the present invention;
Fig. 3 is the circuit theory diagrams of electrical surge protective circuit of the present invention;
Fig. 4 is the circuit theory diagrams of DC-DC output circuit of the present invention.
Embodiment
A kind of electric locomotive driver display unit power supply as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise: input terminal V+, input terminal V-, filter circuit, electrical surge protective circuit, DC-DC output circuit, lead-out terminal 5V+, lead-out terminal 5V-, lead-out terminal 12V+ and lead-out terminal 12V-; Described filter circuit comprises self-recoverage fuse FUSE, piezo-resistance MOV, transient voltage suppressor diode TZ, piezo-resistance MOV, filter inductance L0, filter capacitor C0, common mode inductance L1, lead-out terminal LV+ and lead-out terminal LV-; Described input terminal V+ is connected with piezo-resistance MOV one end by self-recoverage fuse FUSE, and the described piezo-resistance MOV other end connects input terminal V-; Described piezo-resistance MOV two ends are also connected with transient voltage suppressor diode TZ and by filter inductance L0, filter capacitor C0 LC filter branch in series; Described filter capacitor C0 two ends connect lead-out terminal LV+ and lead-out terminal LV-respectively by two coils of common mode inductance L1; Described electrical surge protective circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, voltage stabilizing didoe ZD1, ZD2, ZD3, ZD4, ZD5, switching tube Q1, Q2, electric capacity C3, C4, C5, E3, diode D1, D2, control chip U1, lead-out terminal DC+ and lead-out terminal DC-; Described resistance R4, voltage stabilizing didoe ZD1 and the mutual series connection of voltage stabilizing didoe ZD3 are between lead-out terminal LV+ and lead-out terminal LV-; Voltage stabilizing didoe ZD3 two ends are also connected with resistance R5; The grid of resistance R5 one end connecting valve pipe Q2, the source electrode of other end connecting valve pipe Q2; The drain electrode of described switching tube Q2 connects the anode of voltage stabilizing didoe ZD2; The negative electrode of described voltage stabilizing didoe ZD2 is the grid of connecting valve pipe Q1, the negative electrode of diode D1, the negative electrode of voltage stabilizing didoe ZD4 and resistance R2 respectively; The drain electrode of the other end connecting valve pipe Q1 of resistance R2 and lead-out terminal LV+; Described lead-out terminal LV+ passes through 4 pin and 8 pin, the negative electrode of voltage stabilizing didoe ZD5, the positive pole of electric capacity E3 and the resistance R6 of resistance R3 difference connection control chip U1; 2 pin of the other end connection control chip U1 of resistance R6,6 pin also pass through 7 pin of resistance R7 connection control chip U1; 2 pin, 6 pin of control chip U1 connect lead-out terminal LV-by electric capacity C4; 5 pin of control chip U1 connect lead-out terminal LV-by electric capacity C3; 1 pin of control chip U1 connects lead-out terminal LV-and lead-out terminal DC-respectively; The source electrode of described switching tube Q1 connects the anode of voltage stabilizing didoe ZD4, the anode of diode D2 and lead-out terminal DC+ respectively; The negative electrode of described diode D2 connects the anode of diode D1 and 3 pin of RC branch road connection control chip U1 by being made up of electric capacity C5 and resistance R8; Described DC-DC output circuit comprises electric capacity CY1, CY2, CY3, CY4, CY5, CY6, inductance L 2, L3, resistance RS1, RS2 and power module U2, U3; 1 pin of described power module U2 connect respectively lead-out terminal DC+, power module U3 1 pin and be connected to ground by electric capacity CY1; 2 pin of described power module U2 connect 3 pin of power module U2, lead-out terminal DC-, 2 pin of power module U3,3 pin of power module U3 being connected to ground by electric capacity CY2 respectively; 8 pin of described power module U2 connect 7 pin and the lead-out terminal 5V+ of power module U2 respectively by inductance L 2; 6 pin of described power module U2 connect 7 pin of power module U2 by resistance RS1; 5 pin of described power module U2 connect 4 pin of power module U2, lead-out terminal 5V-being connected to ground by electric capacity CY4 and CY0 parallel with one another respectively; 8 pin of described power module U3 connect 7 pin and the lead-out terminal 12V+ of power module U3 respectively by inductance L 3; 6 pin of described power module U3 connect 7 pin of power module U3 by resistance RS2; 5 pin of described power module U3 connect 4 pin of power module U3, lead-out terminal 12V-being connected to ground by electric capacity CY6 respectively; 8 pin of described power module U2 and 8 pin of power module U3 are connected to ground respectively by electric capacity CY3 and electric capacity CY5; Further, the 5V display branch road being connected to electric capacity E1 parallel with one another, electric capacity C1 between described lead-out terminal 5V+ and lead-out terminal 5V-and being made up of resistance RO and LED 0; The 12V display branch road being connected to electric capacity E2 parallel with one another, electric capacity C2 between described lead-out terminal 12V+ and lead-out terminal 12V-and being made up of resistance R1 and LED 1; Described control chip U1 is NE555; Described electric capacity CY1, CY2, CY3, CY4, CY5, CY6 are safety electric capacity.
In filter circuit of the present invention, self-recoverage fuse FUSE can fuse instantaneously when input current is excessive, when input current reduce after self-recoverage with limiting input current thus protect back-end circuit; The conbined usage of transient voltage suppressor diode TZ and piezo-resistance MOV better can realize input overvoltage protection and surge current absorbs, and makes power supply can bear the direct transient voltage of 1800V of 50 μ s; The LC filter branch in series by filter inductance L0, filter capacitor C0 and common mode inductance L1 filter differential mode from input and common mode electromagnetic interference respectively, ensure that the input voltage that power module front end is level and smooth and stable; Electrical surge protective circuit of the present invention is when input voltage is not more than 160V, 3 pin of control chip NE555 export high level, switching tube Q1 closes, and input voltage directly outputs to power module U2 and the U3 input of DC-DC output circuit, makes it normally export+5V and+12V; When input voltage occurs more than the quick high-pressure spike of 160V or surge voltage, voltage stabilizing didoe ZD1 and ZD3 conducting, voltage stabilizing didoe ZD1 can be used for strangulation and live high pressure spike, the driving voltage that voltage stabilizing didoe ZD3 and resistance R5 improves switching tube Q2 makes its conducting, at this moment circuit is by after resistance R2 current limliting, voltage stabilizing didoe ZD2 by voltage clamp at 160V, simultaneously because switching tube Q1 is in closure state, then between lead-out terminal DC+ and lead-out terminal DC-, voltage is the drain-source pressure drop that 160V deducts switching tube Q1; If input surge voltage to continue for some time more than 160V, input voltage is via the 8 pin VDD of resistance R3 connection control chip NE555, VDD is charged to electric capacity C4 by resistance R6 and resistance R7, when electric capacity C4 both end voltage is greater than 2/3VDD, control chip NE555 overturns output low level, switching tube Q1 turns off thus disconnects the input voltage of DC-DC output circuit, electrical surge protective circuit ensure that the input voltage of follow-up DC-DC output circuit is in reliable claimed range, thus reaches the object protecting wherein power module and power supply reliably working; In DC-DC output circuit of the present invention, power module U2 and U3 adopts the IQ1B series module of SynQor, this module input voltage range: 66 ~ 160V, working temperature :-40 ~ 100 DEG C, there is reinforced insulation grade, I/O isolation voltage is 4250V, insulation resistance is 100M Ω, efficiency is 91%; Electric capacity CY1, CY2, CY3, CY4, CY5, CY6 adopt safety electric capacity, can effectively filtering common mode and differential mode interference, the output voltage of DC-DC output circuit, through the filter branch be made up of inductance L 2 and electric capacity E1, electric capacity C1 and the filter branch be made up of inductance L 3 and electric capacity E2, electric capacity C2, makes as electric locomotive driver display unit provides the power supply of smooth steady.
Electric locomotive driver display unit power supply provided by the invention, by in conjunction with filter circuit, electrical surge protective circuit and DC-DC output circuit, realizing output voltage when input voltage range is 66 ~ 160V is that 5V and 12V is supplied to electric locomotive driver display unit, wide input voltage range, can absorb and suppress peak voltage and surge voltage, the direct transient voltage of 1800V of 50 μ s can be born simultaneously, filter circuit ensure that the input voltage that power module front end is level and smooth and stable in addition, electrical surge protective circuit achieves when input voltage is instantaneous more than it can be made during 160V to be clamped at 160V, when input voltage more than 160V and certain time time power cutoff module front end input voltage, thus the power module protected in DC-DC output circuit, antijamming capability of the present invention is strong, output voltage precision is high, output voltage ripple is low, reliability is high, maintenance cost is low.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. an electric locomotive driver display unit power supply, is characterized in that comprising:
Input terminal V+, input terminal V-, filter circuit, electrical surge protective circuit, DC-DC output circuit, lead-out terminal 5V+, lead-out terminal 5V-, lead-out terminal 12V+ and lead-out terminal 12V-;
Described filter circuit comprises self-recoverage fuse FUSE, piezo-resistance MOV, transient voltage suppressor diode TZ, filter inductance L0, filter capacitor C0, common mode inductance L1, lead-out terminal LV+ and lead-out terminal LV-; Described input terminal V+ is connected with piezo-resistance MOV one end by self-recoverage fuse FUSE, and the described piezo-resistance MOV other end connects input terminal V-; Described piezo-resistance MOV two ends are also connected with transient voltage suppressor diode TZ and by filter inductance L0, filter capacitor C0 LC filter branch in series; Described filter capacitor C0 two ends connect lead-out terminal LV+ and lead-out terminal LV-respectively by two coils of common mode inductance L1;
Described electrical surge protective circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, voltage stabilizing didoe ZD1, ZD2, ZD3, ZD4, ZD5, switching tube Q1, Q2, electric capacity C3, C4, C5, E3, diode D1, D2, control chip U1, lead-out terminal DC+ and lead-out terminal DC-; Described resistance R4, voltage stabilizing didoe ZD1 and the mutual series connection of voltage stabilizing didoe ZD3 are between lead-out terminal LV+ and lead-out terminal LV-; Voltage stabilizing didoe ZD3 two ends are also connected with resistance R5; The grid of resistance R5 one end connecting valve pipe Q2, the source electrode of other end connecting valve pipe Q2; The drain electrode of described switching tube Q2 connects the anode of voltage stabilizing didoe ZD2; The negative electrode of described voltage stabilizing didoe ZD2 is the grid of connecting valve pipe Q1, the negative electrode of diode D1, the negative electrode of voltage stabilizing didoe ZD4 and resistance R2 respectively; The drain electrode of the other end connecting valve pipe Q1 of resistance R2 and lead-out terminal LV+; Described lead-out terminal LV+ passes through 4 pin and 8 pin, the negative electrode of voltage stabilizing didoe ZD5, the positive pole of electric capacity E3 and the resistance R6 of resistance R3 difference connection control chip U1; 2 pin of the other end connection control chip U1 of resistance R6,6 pin also pass through 7 pin of resistance R7 connection control chip U1; 2 pin, 6 pin of control chip U1 connect lead-out terminal LV-by electric capacity C4; 5 pin of control chip U1 connect lead-out terminal LV-by electric capacity C3; 1 pin of control chip U1 connects lead-out terminal LV-and lead-out terminal DC-respectively; The source electrode of described switching tube Q1 connects the anode of voltage stabilizing didoe ZD4, the anode of diode D2 and lead-out terminal DC+ respectively; The negative electrode of described diode D2 connects the anode of diode D1 and 3 pin of RC branch road connection control chip U1 by being made up of electric capacity C5 and resistance R8;
Described DC-DC output circuit comprises electric capacity CY1, CY2, CY3, CY4, CY5, CY6, inductance L 2, L3, resistance RS1, RS2 and power module U2, U3; 1 pin of described power module U2 connect respectively lead-out terminal DC+, power module U3 1 pin and be connected to ground by electric capacity CY1; 2 pin of described power module U2 connect 3 pin of power module U2, lead-out terminal DC-, 2 pin of power module U3,3 pin of power module U3 being connected to ground by electric capacity CY2 respectively; 8 pin of described power module U2 connect 7 pin and the lead-out terminal 5V+ of power module U2 respectively by inductance L 2; 6 pin of described power module U2 connect 7 pin of power module U2 by resistance RS1; 5 pin of described power module U2 connect 4 pin of power module U2, lead-out terminal 5V-being connected to ground by electric capacity CY4 and CY0 parallel with one another respectively; 8 pin of described power module U3 connect 7 pin and the lead-out terminal 12V+ of power module U3 respectively by inductance L 3; 6 pin of described power module U3 connect 7 pin of power module U3 by resistance RS2; 5 pin of described power module U3 connect 4 pin of power module U3, lead-out terminal 12V-being connected to ground by electric capacity CY6 respectively; 8 pin of described power module U2 and 8 pin of power module U3 are connected to ground respectively by electric capacity CY3 and electric capacity CY5.
2. a kind of electric locomotive driver display unit power supply according to claim 1, is characterized in that the 5V being connected to electric capacity E1 parallel with one another, electric capacity C1 between described lead-out terminal 5V+ and lead-out terminal 5V-and being made up of resistance RO and LED 0 shows branch road.
3. a kind of electric locomotive driver display unit power supply according to claim 1, is characterized in that the 12V being connected to electric capacity E2 parallel with one another, electric capacity C2 between described lead-out terminal 12V+ and lead-out terminal 12V-and being made up of resistance R1 and LED 1 shows branch road.
4. a kind of electric locomotive driver display unit power supply according to claim 1, is characterized in that described control chip U1 is NE555.
5. a kind of electric locomotive driver display unit power supply according to claim 1, is characterized in that described electric capacity CY1, CY2, CY3, CY4, CY5, CY6 are safety electric capacity.
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| CN201210563435.8A CN103023305B (en) | 2012-12-21 | 2012-12-21 | Power source for display unit for driver of electric locomotive |
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| CN201210563435.8A CN103023305B (en) | 2012-12-21 | 2012-12-21 | Power source for display unit for driver of electric locomotive |
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| CN103023305B true CN103023305B (en) | 2015-04-15 |
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| CN103368391A (en) * | 2013-07-22 | 2013-10-23 | 成都联腾动力控制技术有限公司 | Step-down circuit with starting display and for electric vehicle |
| CN103384114B (en) * | 2013-07-29 | 2015-08-26 | 中国北车集团大连机车研究所有限公司 | The power supply of DC600V train power supply device control units |
| CN104377939A (en) * | 2014-12-04 | 2015-02-25 | 安徽巨一自动化装备有限公司 | Control power input isolation circuit for electric automobile |
| CN105680676A (en) * | 2016-03-18 | 2016-06-15 | 宁波三星医疗电气股份有限公司 | Switching power supply output circuit |
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Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee after: CRRC DALIAN INSTITUTE CO., LTD. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee before: CNR Dalian Locomotive Research Institute Co., Ltd. |