CN203745531U - Active and passive dual-mode induction high-voltage live display device - Google Patents
Active and passive dual-mode induction high-voltage live display device Download PDFInfo
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Abstract
本实用新型涉及一种有源无源双模感应高压带电显示装置，该装置包括非接触式高压带电传感器；所述非接触式高压带电传感器的输出端依次经整流桥、贮能电路与一触发电路连接；所述触发电路输出端经一分配电路一路连接到无源通道，另一路连接到有源通道；所述无源通道包括第一LED灯和第一光耦；所述第一LED灯的正极与所述分配电路的第一输出端连接；所述第一LED灯的负极与所述第一光耦的正输入端连接；所述光耦的负输入端接所述整流桥的负端；所述有源通道内，所述分配电路的第二输出端输出的信号经第二光耦，并整形后送入CPU处理器进行处理、输出显示。
The utility model relates to an active and passive dual-mode induction high-voltage charged display device, which includes a non-contact high-voltage charged sensor; the output end of the non-contact high-voltage charged sensor passes through a rectifier bridge, an energy storage circuit and a trigger Circuit connection; the output end of the trigger circuit is connected to the passive channel through a distribution circuit one way, and the other way is connected to the active channel; the passive channel includes a first LED light and a first optocoupler; the first LED light The positive pole of the LED lamp is connected to the first output terminal of the distribution circuit; the negative pole of the first LED lamp is connected to the positive input terminal of the first optocoupler; the negative input terminal of the optocoupler is connected to the negative terminal of the rectifier bridge end; in the active channel, the signal output from the second output end of the distribution circuit is sent to the CPU processor for processing and output display after being shaped by the second optocoupler.
Description
技术领域 technical field
本实用新型涉及高电压带电显示技术领域，特别是一种有源无源双模感应高压带电显示装置。 The utility model relates to the technical field of high-voltage charged display, in particular to an active and passive dual-mode induction high-voltage charged display device.
背景技术 Background technique
高压带电显示器由于其对保证操作及检修人员安全所起到的重要作用，成为了高压设备实现本质安全的重要组成部分。高压带电显示装置目前市场上主要有两种类型，一种是接触式，另一种是非接触式。 Due to its important role in ensuring the safety of operators and maintenance personnel, the high-voltage live display has become an important part of high-voltage equipment to achieve intrinsic safety. There are mainly two types of high-voltage charged display devices currently on the market, one is a contact type, and the other is a non-contact type.
接触式带电显示装置，其高压传感器直接与高压端连接，优点是带电显示无需外加工作电源，利用电容分压直接驱动发光元件进行显示，但其重大弊端是传感器与高压直接连接，高压电容由于各种原因存在击穿危险，有较严重安全隐患，目前国网系统内要求更换成非接触式。 Contact charged display device, its high-voltage sensor is directly connected to the high-voltage end, the advantage is that the live display does not need an external working power supply, and the light-emitting element is directly driven by capacitive voltage division for display, but its major disadvantage is that the sensor is directly connected to the high voltage, and the high-voltage capacitor is due to various For these reasons, there is a danger of breakdown and a serious safety hazard. At present, the State Grid system is required to be replaced with a non-contact type.
非接触式带电显示装置，其工作原理是利用高压电场效应原理，无需直接接触检测高压设备是否带电，其主要优点是传感器不与带电导体接触，从根本上解决了传感器因直接接触而带来的安全隐患；但目前市场上提供的此类产品，其工作时必须要有外加工作电源，而当外加电源缺失时，就无法正常工作并指示高压设备是否带电，容易误导操作或检修人员认为设备不带电，也无法提供防误闭锁。此重大缺陷大大制约了非接触式带电显示器的应用范围。 The non-contact charged display device uses the principle of high-voltage electric field effect to detect whether the high-voltage equipment is charged without direct contact. Potential safety hazards; however, such products currently on the market must have an external power supply when working, and when the external power supply is missing, it will not work normally and indicate whether the high-voltage equipment is live, which is easy to mislead the operator or maintenance personnel to think that the equipment is not Charged, also can't provide anti-misoperation locking. This major defect greatly restricts the application range of the non-contact charged display.
此外，当前市场上高压带电显示装置只能安装于距离裸露带电导体空气绝缘一定距离位置处，在配网中对诸如配电环网柜等结构紧凑、安装空间极其有限的设备，存在感应头部分安装困难的问题。SM、RM型环网柜线路侧接地刀闸操作前完全靠线路侧高压带电显示装置进行间接验电，而目前只装有一套高压带电显示装置，不符合国网《安规》中间接验电需要采用“二元法”的要求。有必要在户外环网柜线路侧安装第二套高压带电显示装置。 In addition, the current high-voltage live display device on the market can only be installed at a certain distance from the air insulation of the exposed live conductor. In the distribution network, for equipment with a compact structure and extremely limited installation space, such as power distribution ring main Difficult installation problems. SM and RM ring network cabinet line side grounding knife switch is completely relying on the line side high-voltage live display device for indirect electric inspection before operation, but currently only one set of high-voltage live display device is installed, which does not meet the indirect electric inspection in the "Safety Regulations" of the State Grid The requirements of the "dual method" need to be applied. It is necessary to install a second high-voltage live display device on the line side of the outdoor ring network cabinet. the
实用新型内容 Utility model content
本实用新型的目的是提供一种有源无源双模感应高压带电显示装置，即能保证安全消除安全隐患，又能进行无需外加工作电源即能可靠带电指示的新型非接触式高压带电显示装置。 The purpose of this utility model is to provide an active and passive dual-mode induction high-voltage charged display device, which can ensure safety and eliminate potential safety hazards, and can also provide a new type of non-contact high-voltage charged display device that can reliably indicate charging without an external working power supply. .
本实用新型采用以下方案实现：一种有源无源双模感应高压带电显示装置，其特征在于：包括非接触式高压带电传感器；所述非接触式高压带电传感器的输出端依次经整流桥、贮能电路与一触发电路连接；所述触发电路输出端经一分配电路一路连接到无源通道，另一路连接到有源通道；所述无源通道包括第一LED灯和第一光耦；所述第一LED灯的正极与所述分配电路的第一输出端连接；所述第一LED灯的负极与所述第一光耦的正输入端连接；所述光耦的负输入端接所述整流桥的负端；所述有源通道内，所述分配电路的第二输出端输出的信号经第二光耦，并整形后送入CPU处理器进行处理、输出显示。 The utility model adopts the following scheme to realize: an active and passive dual-mode induction high-voltage charged display device, which is characterized in that it includes a non-contact high-voltage charged sensor; The energy storage circuit is connected to a trigger circuit; the output end of the trigger circuit is connected to the passive channel through a distribution circuit, and the other is connected to the active channel; the passive channel includes a first LED lamp and a first optocoupler; The anode of the first LED lamp is connected to the first output end of the distribution circuit; the cathode of the first LED lamp is connected to the positive input end of the first optocoupler; the negative input end of the optocoupler is connected to The negative terminal of the rectifier bridge; in the active channel, the signal output by the second output terminal of the distribution circuit is sent to the CPU processor for processing and output display after being shaped by the second optocoupler.
在本实用新型一实施例中，所述的贮能电路包括电容C1、电阻R1和电容C2；所述电容C1的正极、所述电阻R1的一端与所述整流桥的正端连接；所述电容C1、C2的负极与所述整流桥的负端连接；所述电容C2的正极与所述电阻R2的另一端连接。 In an embodiment of the present invention, the energy storage circuit includes a capacitor C1, a resistor R1 and a capacitor C2; the positive pole of the capacitor C1 and one end of the resistor R1 are connected to the positive terminal of the rectifier bridge; The negative poles of the capacitors C1 and C2 are connected to the negative terminal of the rectifier bridge; the positive pole of the capacitor C2 is connected to the other end of the resistor R2.
在本实用新型一实施例中，所述触发电路由触发二极管D5和晶体管Q1级联构成；所述触发二极管D5的正端与所述电容C2的正极连接；所述触发二极管D5的负端与所述晶体管Q1的基极连接；所述晶体管Q1的集电极与所述电阻R1的一端连接。 In an embodiment of the present invention, the trigger circuit is composed of a trigger diode D5 and a transistor Q1 cascaded; the positive terminal of the trigger diode D5 is connected to the positive pole of the capacitor C2; the negative terminal of the trigger diode D5 is connected to the positive terminal of the capacitor C2. The base of the transistor Q1 is connected; the collector of the transistor Q1 is connected to one end of the resistor R1.
在本实用新型一实施例中，所述的分配电路是一继电器J2，所述继电器J2由所述CPU处理器；所述继电器J2的中间接点与所述晶体管Q1的射极连接；所述继电器J2的常闭触点与所述第一LED灯的正极连接；常开触点作为所述有源通道的接入点。 In an embodiment of the present invention, the distribution circuit is a relay J2, and the relay J2 is processed by the CPU; the middle contact of the relay J2 is connected with the emitter of the transistor Q1; The normally closed contact of J2 is connected to the anode of the first LED lamp; the normally open contact is used as the access point of the active channel.
在本实用新型一实施例中，所述的有源通道包括第二光耦、电阻R2、R3、R4、R5、R6、R7、R8、电容C3、C4、比较器U1、CPU处理器、第二LED灯、继电器J1、晶体管Q2、二极管D7以及电源接入点W1；所述第二光耦的正输入端与所述继电器J2的常开触点连接，负输入端与所述整流桥的负端连接，正输出端与电容C3的一端、比较器U1的正输入端、电阻R2的一端连接，负输出端、电容C3的另一端、电阻R4的一端、晶体管Q2的射极继电器J2的负端、电容C4的负极均接电源的零点；所述电阻R2的另一端与电阻R3的一端、电阻R5的一端、电阻R6的一端、电阻R8的一端、继电器J1的正极、电容C4的正极以及二极管D7的负极连接；所述电阻R3的另一端与电阻R4的另一端与所述比较器U1的负输入端连接；所述比较器U1的输出端与所述电阻R5的另一端、CPU处理器的输入端I1连接；所述CPU处理器的第一输出端o1经第二LED灯、电阻R6与所述继电器J1的正极连接；所述继电器J1的负极与晶体管Q2的集电极连接；所述CPU处理器的第二输出端o2经电阻R7与所述晶体管Q2的基极连接；所述电阻R8的另一端与所述继电器J2的正极连接；所述二极管D7的正极与所述电源接入点W1连接。 In an embodiment of the utility model, the active channel includes a second optocoupler, resistors R2, R3, R4, R5, R6, R7, R8, capacitors C3, C4, a comparator U1, a CPU processor, a second Two LED lights, relay J1, transistor Q2, diode D7 and power access point W1; the positive input end of the second optocoupler is connected with the normally open contact of the relay J2, and the negative input end is connected with the rectifier bridge The negative terminal is connected, the positive output terminal is connected to one end of the capacitor C3, the positive input terminal of the comparator U1, and one end of the resistor R2, the negative output terminal, the other end of the capacitor C3, one end of the resistor R4, and the emitter of the transistor Q2. Relay J2 The negative terminal and the negative pole of the capacitor C4 are all connected to the zero point of the power supply; the other end of the resistor R2 is connected to one end of the resistor R3, one end of the resistor R5, one end of the resistor R6, one end of the resistor R8, the positive pole of the relay J1, and the positive pole of the capacitor C4 And the cathode connection of diode D7; The other end of described resistance R3 and the other end of resistance R4 are connected with the negative input end of described comparator U1; The output end of described comparator U1 is connected with the other end of described resistance R5, CPU The input terminal I1 of the processor is connected; the first output terminal o1 of the CPU processor is connected to the positive pole of the relay J1 through the second LED lamp and the resistor R6; the negative pole of the relay J1 is connected to the collector of the transistor Q2; The second output terminal o2 of the CPU processor is connected to the base of the transistor Q2 through a resistor R7; the other end of the resistor R8 is connected to the positive pole of the relay J2; the positive pole of the diode D7 is connected to the power supply Access point W1 is connected.
本实用新型为克服当前配网高压带电显示器存在带有安全隐患、且工作电源不可靠的弊端，实现研制一种即能保证安全消除安全隐患，又能进行无需外加工作电源即能可靠带电指示的新型非接触式高压带电显示器。其科技依据是在高压电场中，接地极的曲率半径较小的导体表面，存在有微弱的“迁移电流”。在保证绝缘安全的条件下，将导体靠近高压端以取得较大信号，此信号经贮能、触发电路作用下，将驱动LED进行带电显示。同时能够提供一定频率的脉冲式导通信号，可供微机五防电脑钥匙识别。此外，本实用新型采用安装于电缆头三相分支绝缘层处的非接触感应器，以解决配网环网柜安装困难的问题，为环网柜增加一套线路高压带电显示装置创造条件。 The utility model aims to overcome the disadvantages of hidden safety hazards and unreliable working power supply in the current distribution network high-voltage charged display, and realizes the development of a device that can ensure safety and eliminate hidden dangers, and can also provide reliable live indication without additional working power supply. New non-contact high-voltage charged monitor. The scientific and technological basis is that in the high-voltage electric field, there is a weak "migration current" on the conductor surface with a small curvature radius of the ground electrode. Under the condition of ensuring the safety of the insulation, the conductor is placed close to the high-voltage end to obtain a larger signal, and the signal will drive the LED for live display under the action of the energy storage and trigger circuit. At the same time, it can provide a certain frequency pulse conduction signal, which can be used for computer key identification with five anti-types. In addition, the utility model adopts a non-contact sensor installed at the insulation layer of the three-phase branch of the cable head to solve the problem of difficult installation of the ring network cabinet of the distribution network and create conditions for adding a set of line high-voltage live display devices to the ring network cabinet.
附图说明 Description of drawings
图1是本实用新型电路原理框图。 Fig. 1 is a functional block diagram of the utility model circuit.
图2是本实用新型电路连接示意图。 Fig. 2 is a schematic diagram of circuit connection of the utility model. the
具体实施方式 Detailed ways
下面结合附图及实施例对本实用新型做进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is described further.
如图1所示，本实施例提供一种有源无源双模感应高压带电显示装置，其特征在于：包括非接触式高压带电传感器；所述非接触式高压带电传感器的输出端依次经整流桥、贮能电路与一触发电路连接；所述触发电路输出端经一分配电路一路连接到无源通道，另一路连接到有源通道；所述无源通道包括第一LED灯和第一光耦；所述第一LED灯的正极与所述分配电路的第一输出端连接；所述第一LED灯的负极与所述第一光耦的正输入端连接；所述光耦的负输入端接所述整流桥的负端；所述有源通道内，所述分配电路的第二输出端输出的信号经第二光耦，并整形后送入CPU处理器进行处理、输出显示。 As shown in Figure 1, the present embodiment provides an active and passive dual-mode induction high-voltage charging display device, which is characterized in that it includes a non-contact high-voltage charging sensor; the output terminals of the non-contact high-voltage charging sensor are rectified in turn The bridge and the energy storage circuit are connected to a trigger circuit; the output end of the trigger circuit is connected to the passive channel through a distribution circuit, and the other is connected to the active channel; the passive channel includes the first LED light and the first light coupling; the positive pole of the first LED lamp is connected to the first output end of the distribution circuit; the negative pole of the first LED lamp is connected to the positive input end of the first optocoupler; the negative input of the optocoupler The terminal is connected to the negative terminal of the rectifier bridge; in the active channel, the signal output by the second output terminal of the distribution circuit is sent to the CPU processor for processing and output display after being shaped by the second optocoupler.
具体的，请参见图2，该显示装置包括桥式整流电路、触发二极管D5和晶体管Q1，Q2；转换继电器J2，闭锁继电器J1，光藕合器B1，B2，发光二极管DS1，DS2；电容C3，C4，二极管D7，电阻R1，R2，R3，R4，R5，R6，R7，R8，电源插座W1。所述桥式整流电路的输入端连接电压感应器，桥式整流电路的直流输出正端分别连接有电容C1的第一端、电阻R1的第一端和三级管Q1的集电极，，电容C1的第二端与桥式整流电路的负极连接，电阻R1的第二端分别与电容C2的第一端和触发二极管D5的一极连接，触发二极管D5的另一极与晶体管Q1的基极连接，Q1的发射极连接继电器J2的中间接点J20，J2的常闭接点J21与发光二极管DS1的正极连接，DS1负极和光藕合器B2的输入正端连接，B2的输入负端与电容C2的第二端分别与桥式整流电路的负极连接。 Specifically, please refer to Figure 2, the display device includes a bridge rectifier circuit, trigger diode D5 and transistors Q1, Q2; switching relay J2, latching relay J1, photocouplers B1, B2, light-emitting diodes DS1, DS2; capacitor C3 , C4, diode D7, resistors R1, R2, R3, R4, R5, R6, R7, R8, power socket W1. The input terminal of the bridge rectifier circuit is connected to a voltage sensor, and the positive terminal of the DC output of the bridge rectifier circuit is respectively connected to the first terminal of the capacitor C1, the first terminal of the resistor R1 and the collector of the triode Q1. The second end of C1 is connected to the negative pole of the bridge rectifier circuit, the second end of the resistor R1 is respectively connected to the first end of the capacitor C2 and one pole of the trigger diode D5, and the other pole of the trigger diode D5 is connected to the base of the transistor Q1 Connection, the emitter of Q1 is connected to the intermediate contact J20 of the relay J2, the normally closed contact J21 of J2 is connected to the positive pole of the light-emitting diode DS1, the negative pole of DS1 is connected to the positive input terminal of the optical coupler B2, and the negative input terminal of B2 is connected to the positive terminal of the capacitor C2. The second terminals are respectively connected to the negative poles of the bridge rectifier circuit.
J2的常开接点J22与光耦合器B1输入正端连接，B1的负端与整流桥负极连接，B1的输出正端连接C3的一端，R2的一端及比较器U1的“+”端。B1的输出负端接电源0点，U1的“-”端接R3、R4的一端，R4的另一端接0V点，R3、R8、C4、R2、R5、R6及继电器J1的一端共同接二极管D7的负端，D7的正端接电源插座W1的+6V输出端，R5的另一端接U1的输出端及微处理器CPU的输入口I1，R6的另一端接发光二极管DS2的正极，DS2的负极接CPU的输出口o1，R8的另一端接转换继电器J2一端。J2的另一端与C4另一端共同接0V点，闭锁继电器J1的另一端接晶体管Q2的集电极，Q2的基极接R7一端，R7另一端接CPU的输出端o2，Q2的发射极接0V。上述0V点接入电源插座W1的0V点。B2的输出端为无源“五防”输出端。J1的接点就J11，J12为有源闭锁（“五防”）输出接点。 采用以上的电路结构，桥式整流电路接收电压感应器感应的电压信号，经桥式整流电路整流后，输出电流给电容C1充电，同时通过电阻R1对电容C2充电，当电容C2中的电量足够触发触发二极管D5时，电容C2通过触发二极管D5对晶体三极管Q1的基极输出电流，晶体三极管Q1导通；在无工作电源时，电容C1通过J2的中间点J20与常闭接点J21对发光二极管DS及B2放电，发光二极管DS1亮起。当电容C1放电完毕，发光二极管DS熄灭。电容C1和电容C2不断地重复以上的工作过程，发光二极管DS闪烁，B2输出端输出“有电”脉冲信号。从而达到指示高压设备带电的目的。 The normally open contact J22 of J2 is connected to the positive input terminal of optocoupler B1, the negative terminal of B1 is connected to the negative pole of the rectifier bridge, the positive output terminal of B1 is connected to one terminal of C3, one terminal of R2 and the "+" terminal of comparator U1. The output negative terminal of B1 is connected to power supply 0 point, the "-" terminal of U1 is connected to one end of R3 and R4, the other end of R4 is connected to 0V point, and one end of R3, R8, C4, R2, R5, R6 and relay J1 is connected to a diode The negative terminal of D7, the positive terminal of D7 are connected to the +6V output terminal of the power socket W1, the other terminal of R5 is connected to the output terminal of U1 and the input port I1 of the microprocessor CPU, the other terminal of R6 is connected to the positive pole of the light-emitting diode DS2, DS2 The negative pole of R8 is connected to the output port o1 of the CPU, and the other end of R8 is connected to one end of the conversion relay J2. The other end of J2 and the other end of C4 are jointly connected to the 0V point, the other end of the blocking relay J1 is connected to the collector of the transistor Q2, the base of Q2 is connected to one end of R7, the other end of R7 is connected to the output terminal o2 of the CPU, and the emitter of Q2 is connected to 0V . The above 0V point is connected to the 0V point of the power socket W1. The output terminal of B2 is a passive "five-defense" output terminal. The contact of J1 is J11, and J12 is the output contact of active locking ("five defenses"). Using the above circuit structure, the bridge rectifier circuit receives the voltage signal induced by the voltage sensor, and after being rectified by the bridge rectifier circuit, the output current charges the capacitor C1, and at the same time charges the capacitor C2 through the resistor R1, when the power in the capacitor C2 is sufficient When the trigger diode D5 is triggered, the capacitor C2 outputs current to the base of the transistor Q1 through the trigger diode D5, and the transistor Q1 is turned on; when there is no working power supply, the capacitor C1 passes the middle point J20 of J2 and the normally closed contact J21 to the light-emitting diode DS and B2 are discharged, and the light-emitting diode DS1 lights up. When the capacitor C1 is fully discharged, the LED DS goes out. Capacitor C1 and capacitor C2 continuously repeat the above working process, light-emitting diode DS flickers, and the output terminal of B2 outputs a "power on" pulse signal. So as to achieve the purpose of indicating that the high-voltage equipment is charged.
当有工作电源时，J2的J20与常开接点J22导通，C1对光耦合器B1放电，B1的输出端产生脉冲信号输入比较器U1的“+”端，U1输出一个“有电”信号给CPU输入I1口，CPU经判断除干扰处理后输出“有电”信号，点亮DS2同时接通闭锁继电器J1，J1接点J11，J12输出闭锁信号，达到“有电”显示及闭锁目的。 When there is a working power supply, J20 of J2 is connected to the normally open contact J22, C1 discharges the optocoupler B1, the output terminal of B1 generates a pulse signal input to the "+" terminal of comparator U1, and U1 outputs a "power" signal Input the I1 port to the CPU, and the CPU outputs the "power on" signal after judging and removing the interference, lights up DS2 and turns on the locking relay J1 at the same time, and the J1 contacts J11 and J12 output the locking signal to achieve the purpose of "power on" display and locking. the
以上所述仅为本实用新型的较佳实施例，凡依本实用新型申请专利范围所做的均等变化与修饰，皆应属本实用新型的涵盖范围。 The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model. the
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