CN102780390A - Slowly-starting circuit for mine direct current conversion intrinsic safe power supply - Google Patents

Slowly-starting circuit for mine direct current conversion intrinsic safe power supply Download PDF

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CN102780390A
CN102780390A CN2012102552727A CN201210255272A CN102780390A CN 102780390 A CN102780390 A CN 102780390A CN 2012102552727 A CN2012102552727 A CN 2012102552727A CN 201210255272 A CN201210255272 A CN 201210255272A CN 102780390 A CN102780390 A CN 102780390A
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connected
power supply
vin
capacitor
intrinsically safe
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CN2012102552727A
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CN102780390B (en
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付灵忠
刘彦明
李小平
谢楷
黎剑兵
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西安电子科技大学
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Abstract

The invention relates to a slowly-starting circuit for a mine direct current conversion intrinsic safe power supply, which comprises a power input anode VIN+ and a power input cathode VIN-, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2 and a field-effect tube Q1, wherein the capacitor C1 is connected with the power input anode VIN+ and the power input cathode VIN- for filtering high-frequency interference; the resistor R1 is connected in parallel at the two ends of the capacitor C1 to form a release circuit of the capacitor C1; the resistor R2 is connected in series with the capacitor C2; the other end of the resistor R2 is connected with the power input anode VIN+; the other end of the capacitor C2 is connected with the power input cathode VIN-; a grid electrode of the field-effect tube Q1 is connected with a connecting point of the resistor R2 and the capacitor R2; a source electrode of the transistor Q1 is connected with the power input cathode VIN-; a drain electrode of the transistor Q1 is connected with ground of a rear-stage intrinsic safe power supply; and the capacitor C3 is connected in parallel at an input end of a direct current conversion intrinsic safe power supply module for storing energy. The circuit provided by the invention improves the stability of sensor devices in a mine.

Description

矿用直流转换本安电源的缓启动电路 Mine slow start DC converter intrinsically safe power supply circuit

技术领域 FIELD

[0001] 本发明属于电源技术领域,涉及一种矿用直流转换本安电源的缓启动电路,适用于矿下传感器网络等分布式系统的供电。 [0001] The present invention belongs to the technical field of power, to supply DC converter buffer Ore intrinsically safe power supply starting circuit for the mine sensor system in a distributed network.

背景技术 Background technique

[0002]目前,随着国民经济的发展,分布式供电系统在矿下得到了广泛的应用,矿井下分布着大量的传感器设备,这类传感器设备都有一个独立的直流转换本安电源模块,为其各自的传感器电路供电,同时这些传感器设备都由矿上的一个大型本安电源供电。 [0002] Currently, with the development of national economy, resulting in the distributed power supply system is widely used ore, a large number of sensor devices distributed at the mine, this type of sensor device has a separate intrinsically safe power to DC converter module, their respective sensor circuitry while the sensor device consists of a large intrinsically safe power supply on mine.

[0003] 一般情况下,为保证矿下传感器设备工作电压的稳定,直流转换本安电源模块前端都并有大容量的电容。 [0003] In general, in order to ensure stable operation of the voltage sensor device ore, intrinsically safe power to DC converter module and the front end of the large-capacity capacitor. 直流转换本安电源模块本身符合本质安全要求,但是在前级本安电源上电过程中,各个直流转换本安电源模块同时从母线中吸收大量的瞬间电流,造成前级本安电源的误动作,使得传感器设备不能正常工作。 DC power converter module itself intrinsically safe intrinsically safe, but on the front stage of the present process is electrically safe power supply, the respective module DC converter intrinsically safe power while absorbing a large amount of transient current from the bus bar, resulting in malfunction of the pre-intrinsically safe power so that the sensor device is not working.

发明内容 SUMMARY

[0004] 本发明的目的在于为矿用直流转换本安电源模块提供一种矿用直流转换本安电源的缓启动电路,以减小上电时时,从前级本安电源的吸收的瞬间电流,提高矿下传感器设备的稳定性。 [0004] The object of the present invention is to mine DC converter to provide an intrinsically safe power supply module DC converter buffer mining intrinsically safe power supply starting circuit to reduce the power from time to time, instantaneous current absorbed by the front stage of intrinsically safe power, improve the stability of the sensor apparatus in the mine.

[0005] 为实现上述目的,本发明提供的技术方案如下:一种矿用直流转换本安电源的缓启动电路,其特征是:包括电源输入正极VIN+和电源输入负极VIN-,电容Cl、电容C2、电容C3、电阻Rl、电阻R2和场效应管Ql,其中所述电容Cl连接在电源的输入正极VIN+和电源输入负极VIN-,起到滤除高频干扰的作用;所述电阻Rl并联在电容Cl两端,构成电容Cl的泻放回路;所述电阻R2和电容C2串联,电阻R2的另一端连接电源的输入正极VIN+,电容C2的另一端连接电源输入负极VIN-;所述场效应管Ql的栅极与电阻R2和电容C2的连接点连接,晶体管Ql的源极连接电源输入负极VIN-,晶体管Ql的漏极连接后级本安电源的地GND ;所述电容C3并联在直流转换本安电源模块的输入端,起到储能作用。 [0005] To achieve the above object, the present invention provides the following technical solution: Ore DC converter with soft-start circuit intrinsically safe power supply, wherein: a positive power supply input VIN + and VIN- negative power input, the capacitor Cl, capacitor C2, capacitor C3, a resistor Rl, a resistor R2 and FET Ql, wherein the capacitor Cl connected to the positive input supply VIN + and the negative power supply input VIN-, acts to filter out high frequency interference; the parallel resistor Rl across the capacitor Cl, capacitor Cl constituting spilled back into the path; the series resistor R2 and the capacitor C2, the other end of the resistor R2 is connected to the positive power supply inputs VIN +, the other end of the capacitor C2 is connected to the negative power supply input VIN-; the field effect transistor Ql is connected to the gate of the point of the resistor R2 and the capacitor C2 is connected, the source of transistor Ql is connected to the negative power supply input VIN-, the drain of the transistor Ql is connected to the intrinsically safe power level to the GND; the capacitor C3 is connected in parallel An inverting input terminal of this DC power supply module, play the role of an energy storage.

[0006] 所述的矿用直流转换本安电源的缓启动电路还包括二极管D1,二极管Dl的阴极连接在电源的输入正极VIN+,二极管Dl阳极连接场效应管Ql的栅极。 [0006] Mine according to buffer intrinsically safe power to DC converter starting circuit further includes a diode D1, the cathode of the diode Dl is connected to the positive power supply input VIN +, the gate of the diode Dl anode connected to the FET Ql.

[0007] 所述的矿用直流转换本安电源的缓启动电路还包括二极管D2,二极管D2串联在电源的输入正极VIN+和后级本案电源模块的正极输入端VCC之间,其中二极管D2的阴极连接在后级本案电源模块的正极输入端VCC,二极管D2阳极连接电源的输入正极VIN+。 [0007] DC converter according to a slow start mining intrinsically safe power circuit further includes between the positive input terminal VCC diode D2, the diode D2 in series with the positive input power supply VIN + and post-stage power module case, wherein the cathode of the diode D2 in this case the stage is connected to the positive input terminal of the power module VCC, the diode D2 is connected to the anode power supply positive input VIN +.

[0008] 所述的电阻R2的阻值范围在100K到IM之间,电容C2的电容值范围在IuF到IOuF之间。 [0008] The resistance range of the resistor R2 between 100K IM, the capacitance value of the capacitor C2 in the range between IuF IOuF.

[0009] 本发明相比于现有的技术具有如下优点: [0009] The present invention has the following advantages compared to the prior art:

I、由于上电时场效应管Ql处于关断状态,电容C2通过电阻R2充电,当电容C2的电压达到场效应管Ql的开启电压Vgs (th)时,场效应管Ql才开始导通,因此直流转换本安电源模块延迟一段时间开始上电,保证了直流转换本安电源模块在前级本安电源电压已经建立之后才上电,因此传感器设备所需的瞬间电流可以通过前级本安电源和储能电容共同提高,以减小上电时从前级本安电源吸收的冲击电流的大小; I, due to power FET Ql is in an off state, the capacitor C2 is charged through the resistor R2, a capacitor C2 when the voltage reaches the threshold voltage of the FET Ql Vgs (th), began FET Ql is turned on, Thus DC converter power supply module is intrinsically safe power starts a time delay to ensure that only after DC converter power supply module front stage intrinsically safe intrinsically safe power supply voltage has been established, so the instantaneous current required by the sensor device of the present pre-stage safety and a storage capacitance and increase the power to reduce the size of the previous stage when the power absorbed by the intrinsically safe power surge current;

2、随着场效应管Ql栅极和源极间的电压Vgs的缓慢升高,上电电流也缓慢升高直到直流转换本安电源模块前的储能电容充满,减少了上电过程中所需的峰值电流; 2, with the slow increase of the voltage Vgs between the gate and source of the FET Ql electrode, the current is gradually increased until the power to DC converter storage capacitor intrinsically safe power supply before full module, reduces the power in the process required peak current;

3、由于装配时电阻R2和电容C2随机组合,直流转换本安电源模块的延迟上电时间不相同,因此错开了各直流转换本安电源模块的上电时间,进一步减小对前级本安电源的冲击。 3, since the resistor R2 and the capacitor C2 random combination, the delay DC converter power supply module is intrinsically safe time is not the same during assembly, and therefore each time shifted DC converter power supply module is intrinsically safe, is further reduced to the pre-intrinsically safe the impact of supply.

附图说明 BRIEF DESCRIPTION

[0010] 下面结合附图和实施例对本发明作进一步说明:· Drawings and embodiments of the present invention will be further described [0010] below with: ·

图I是矿用直流转换本安电源的缓启动电路。 Figure I is a slow DC converter mining intrinsically safe power supply starting circuit.

具体实施方式 Detailed ways

[0011] 实施例I [0011] Example I

一种矿用直流转换本安电源的缓启动电路,包括电源输入正极VIN+和电源输入负极VIN-,电容Cl、电容C2、电容C3、电阻R1、电阻R2和场效应管Q1,其中所述电容Cl连接在电源的输入正极VIN+和电源输入负极VIN-,起到滤除高频干扰的作用;所述电阻Rl并联在电容Cl两端,构成电容Cl的泻放回路;所述电阻R2和电容C2串联,电阻R2的另一端连接电源的输入正极VIN+,电容C2的另一端连接电源输入负极VIN-;所述场效应管Ql的栅极与电阻R2和电容C2的连接点连接,晶体管Ql的源极连接电源输入负极VIN-,晶体管Ql的漏极连接后级本安电源的地GND ;所述电容C3并联在直流转换本安电源模块的输入端,起到储能作用。 Ore DC converter with soft-start circuit intrinsically safe power supply comprising a positive power supply input VIN + and VIN- negative power input, the capacitor Cl, capacitor C2, capacitor C3, resistor R1, resistor R2 and FET Q1, wherein said capacitor Cl connected to the positive input of the power supply input VIN + and negative VIN-, acts to filter out high frequency interference; the resistor Rl is connected in parallel across the capacitor Cl, capacitor Cl constituting spilled back into the path; the resistor R2 and the capacitor C2 series, the other end of the resistor R2 is connected to the positive power supply inputs VIN +, the other end of the capacitor C2 is connected to the negative power supply input VIN-; connection point of the gate of the FET Ql resistor R2 and the capacitor C2 is connected, the transistor Ql power source connected to the negative input VIN-, the drain of the transistor Ql is connected to intrinsically safe power level of the GND ground; the capacitor C3 is connected in parallel to DC converter intrinsically safe power module inputs, play the role of an energy storage.

[0012] 实施例2 [0012] Example 2

采用本发明的一个矿用直流转换本安电源的缓启动电路如图I所示。 According to the present invention, a slow start mine DC converter power supply circuit intrinsically safe I shown in FIG. 该电路包括电容Cl、电容C2、电容C3、电阻R1、电阻R2、场效应管Q1、二极管Dl和二极管D2其中所述电容Cl连接在电源的输入正极VIN+和电源输入负极VIN-,起到滤除高频干扰的作用;所述电阻Rl并联在电容Cl两端,构成电容Cl的泻放回路;所述电阻R2和电容C2串联,电阻R2的另一端连接电源的输入正极VIN+,电容C2的另一端连接电源输入负极VIN-;所述场效应管Ql的栅极与电阻R2和电容C2的连接点连接,场效应管Ql的源极连接电源输入负极VIN-,场效应管Ql的漏极连接后级本安电源的地GND ;所述电容C3并联在后级本安电源模块的输入端,起到储能作用;所述二极管Dl的阴极连接在电源的输入正极VIN+,二极管Dl阳极连接场效应管Ql的栅极;所述二极管D2串联在电源的输入正极VIN+和后级本案电源模块的正极输入端VCC之间,其中二极管D2的阴极连接在后级本案电源模块的正极输入 The circuit includes a capacitor Cl, capacitor C2, a capacitor C3, a resistor R1, a resistor R2, MOSFET Q1, a diode Dl and a diode D2 wherein the capacitor Cl connected to the positive input of the power supply input VIN + and negative VIN-, filter functions in addition to high-frequency interference; the resistor Rl is connected in parallel across the capacitor Cl, capacitor Cl constituting spilled back into the path; the series resistor R2 and the capacitor C2, the other end of the resistor R2 is connected to the positive power supply inputs VIN +, capacitor C2 the negative power supply input connected to the other end of VIN-; connection point of the gate of the FET Ql resistor R2 and the capacitor C2 is connected, source of the transistor Ql is connected to the negative power supply input VIN-, the drain of the FET Ql after connecting intrinsically safe power level of the GND ground; capacitor C3 is connected in parallel to the input terminal of the rear stage intrinsically safe power modules, functions as an energy storage effect; the cathode of the diode Dl is connected to the input of the positive power source + VIN, diode Dl anode connected the gate of the FET Ql; VCC between the positive input terminal of the diode D2 connected in series in the positive power supply input VIN + and the subsequent stage of the power module case, wherein the cathode of diode D2 is connected in the rear stage of the power module case positive input 端VCC,二极管D2阳极连接电源的输入正极VIN+ ;所述场效应管Ql为金属氧化物半导体场效应晶体管。 Terminal VCC, the diode D2 is connected to the anode power supply positive input VIN +; the FET Ql is a metal oxide semiconductor field effect transistor.

[0013] 本发明的工作原理如下: [0013] The working principle of the present invention is as follows:

当前级本安电源上电时,场效应管Ql处于关断状态,电源线上的电压首先通过所述电容Cl滤波,滤除电源线上的高频干扰,同时电源通过所述的电阻R2给电容C2充电,当电容C2上的电压上升到场效应管Ql的开启电压Vgs (th)时,场效应管Ql开始导通,导通所需时间Ton的计算方法为:Ton=R2*C2*ln (VIN/ (VIN-Vgs (th)));场效应管Ql导通后,传感器设备前的储能电容C3通过场效应管Ql和二极管D2与前级的本安电源连通,随着电容C2两端的电压逐渐升高,场效应管Ql的阻抗从高阻抗逐渐变为低阻抗,直到场效应管Ql完全导通。 When the current power intrinsically safe power level, the FET Ql is in an off state, the voltage supply line through the first filter capacitor Cl, filter out high frequency interference on the power line while the power supply through resistor R2 to capacitor C2 is charged, when the voltage on the capacitor C2 rises to turn on the FET Ql of the voltage Vgs (th), FET Ql begins to conduct, the conduction time is calculated as required Ton: Ton = R2 * C2 * ln (VIN / (VIN-Vgs (th))); the FET Ql is turned on, the energy storage capacitor C3 before the sensor device communicates via FET Ql and the diode D2 before intrinsically safe power stage, as the capacitance C2 gradually increases the voltage across the impedance FET Ql is gradually changed from the high impedance low impedance, until full conduction FET Ql. 由于电阻R2和电容C2的延迟作用,保证了场效应管Ql导通的过程中,前级本安电源已经完全建立,电容C2的充电电流可以由前级的本安电源和储能电容共同提供,减少了开机时对本案电源的冲击,保证了前级本安电源的正常工作和传感器设备电压的正常建立。 Since the retarding effect of the resistor R2 and capacitor C2 to ensure that the process tubes FET Ql is turned on, the pre-intrinsically safe power supply has been fully established, the charging current of capacitor C2 may be provided by the first stage co-intrinsically safe power supply and the storage capacitor , reducing the impact on the case when the power supply to ensure the normal work and establish normal pre-voltage sensor device intrinsically safe power supply. 由于传感器设备的电压建立发生在前级前级本安电源电压建立以后,因此该电路起到缓启动的作用。 Since the voltage sensor device after the establishment of the preceding stage pre-established intrinsically safe power supply voltage occurs, so that the circuit functions as a slow start.

[0014] 当前级本安电源关断输出时,电容C2、二极管Dl和电阻Rl组成一个闭合回路,电容C2通过二极管Dl和电阻Rl放电,当电容C2两端的电压低于场效应管Ql的开启电压时,晶体管关断,关断所需的时间计算如下:Toff=Rl*C2*ln (Vgs (th)/VIN);泻放电阻Rl取的较小,可以保证在本安电源关断输出时,场效应管Ql快速关断,缓启动电路快速复位,在下一次本安电源上电时,该电路继续起到缓启动的作用。 [0014] When the current level output intrinsically safe power supply is turned off, capacitor C2, diode Dl and a resistor Rl to form a closed loop, the capacitor C2 through the diode Dl and resistor Rl discharge, when the voltage across the capacitor C2 is lower than the opening of the FET Ql voltage, the transistor is turned off, the time required for turn-off is calculated as follows: Toff = Rl * C2 * ln (Vgs (th) / VIN); bleed resistor Rl taken smaller, this can ensure safe power-off output when the FET Ql fast turn-off, soft-start circuit fast reset when the next power-intrinsically safe power supply, the circuit continues to function as slow start. [0015] 当前级本安电源发生电压跌落时,由于二极管D2的作用,传感器设备中的储能电容C3不会向前级倒灌电流,传感器设备正常工作所需的电压可以通过储能电容C3来维持,如果电压跌落的时间过长,在电阻R2和电容C2的作用下,当储能电容C3上的电压下降到一定的程度时,该控制电路能自动关断场效应管Q1,保证了在前级本安电源发生长时间电压跌落后传感器设备的缓启动。 When the [0015] current level occurs intrinsically safe power supply voltage drop, due to the diode D2, the sensor apparatus storage capacitor C3 does not flow backward forward current level, the sensor device can work normally required voltage by the storage capacitor C3 to maintained, if the voltage drop is too long, the action of resistor R2 and capacitor C2, when the voltage on storage capacitor C3 falls to a certain extent, the control circuitry can automatically turn off the FET Q1, ensures that intrinsically safe power level occurs before the buffer device after the sensor voltage drops start time.

[0016] 本实施例没有详细叙述的部件和结构属本行业的公知部件和常用结构或常用手段,这里不一一叙述。 [0016] member of the present embodiment and the configuration is not described in detail in the case of the industry commonly known structures or components and conventional means, not going to describe here.

Claims (4)

1.矿用直流转换本安电源的缓启动电路,其特征是:包括电源输入正极VIN+和电源输入负极VIN-,电容Cl、电容C2、电容C3、电阻R1、电阻R2和场效应管Q1,其中所述电容Cl连接在电源的输入正极VIN+和电源输入负极VIN-,起到滤除高频干扰的作用;所述电阻Rl并联在电容Cl两端,构成电容Cl的泻放回路;所述电阻R2和电容C2串联,电阻R2的另一端连接电源的输入正极VIN+,电容C2的另一端连接电源输入负极VIN-;所述场效应管Ql的栅极与电阻R2和电容C2的连接点连接,晶体管Ql的源极连接电源输入负极VIN-,晶体管Ql的漏极连接后级本安电源的地GND ;所述电容C3并联在直流转换本安电源模块的输入端,起到储能作用。 1. Mine DC converter buffer intrinsically safe power supply starting circuit, characterized in that: a positive power supply input VIN + and VIN- negative power input, the capacitor Cl, capacitor C2, capacitor C3, resistor R1, resistor R2 and FET Q1, wherein the capacitor Cl connected to the positive input of the power supply input VIN + and negative VIN-, acts to filter out high frequency interference; the resistor Rl is connected in parallel across the capacitor Cl, capacitor Cl constituting spilled back into the path; the resistor R2 and capacitor C2 in series, the other end of the resistor R2 is connected to the positive power supply inputs VIN +, the other end of the capacitor C2 is connected to the negative power supply input VIN-; connection point of the gate of the FET Ql resistor R2 and the capacitor C2 is connected , source of the transistor Ql is connected to the negative power supply input VIN-, the drain of the transistor Ql is connected to intrinsically safe power level of the GND ground; the capacitor C3 is connected in parallel to DC converter intrinsically safe power module inputs, play the role of an energy storage.
2.根据权利要求I所述的矿用直流转换本安电源的缓启动电路,其特征是:所述的矿用直流转换本安电源的缓启动电路还包括二极管D1,二极管Dl的阴极连接在电源的输入正极VIN+,二极管Dl阳极连接场效应管Ql的栅极。 The mine according to claim I with a soft-start circuit DC converter intrinsically safe power supply, wherein: the DC converter buffer mine intrinsically safe power supply starting circuit further includes a diode D1, the cathode of the diode Dl is connected + positive input supply VIN, the diode Dl anode connected to the gate of the FET Ql.
3.根据权利要求I所述的矿用直流转换本安电源的缓启动电路,其特征是:所述的矿用直流转换本安电源的缓启动电路还包括二极管D2,二极管D2串联在电源的输入正极VIN+和后级本案电源模块的正极输入端VCC之间,其中二极管D2的阴极连接在后级本案电源模块的正极输入端VCC,二极管D2阳极连接电源的输入正极VIN+。 The mine according to claim I DC converter buffer intrinsically safe power supply starting circuit, characterized in that: the mine-DC converter buffer intrinsically safe power supply starting circuit further includes a diode D2, the diode D2 in series with the power supply between the positive input VIN + and the rear stage of the power module case positive input VCC, wherein the anode of the diode D2 is connected to the cathode case in the subsequent stage of the power module input VCC, the diode D2 is connected to the anode power supply positive input VIN +.
4.根据权利要求I所述的矿用直流转换本安电源的缓启动电路,其特征是:所述的电阻R2的阻值范围在IOOK到IM之间,电容C2的电容值范围在IuF到IOuF之间。 Mine according to claim I with a soft-start circuit DC converter intrinsically safe power supply, wherein: the resistance range of the resistor R2 between the IM IOOK, capacitance range of the capacitor C2 to IuF between IOuF.
CN201210255272.7A 2012-07-23 2012-07-23 Slowly-starting circuit for mine direct current conversion intrinsic safe power supply CN102780390B (en)

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Publication number Priority date Publication date Assignee Title
CN106685192A (en) * 2016-12-02 2017-05-17 盛科网络(苏州)有限公司 Power supply circuit of switch system

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Publication number Priority date Publication date Assignee Title
CN201181903Y (en) * 2008-04-01 2009-01-14 中兴通讯股份有限公司 Input circuit of DC power supply

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201181903Y (en) * 2008-04-01 2009-01-14 中兴通讯股份有限公司 Input circuit of DC power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106685192A (en) * 2016-12-02 2017-05-17 盛科网络(苏州)有限公司 Power supply circuit of switch system

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