CN101666686B - Online monitoring device for temperature of high voltage board bus bar, cable joint and contact - Google Patents
Online monitoring device for temperature of high voltage board bus bar, cable joint and contact Download PDFInfo
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Abstract
The invention relates to an online monitoring device for temperature of high voltage board bus bar, cable joint and contact, comprising a power supply, the power supply comprises an upper half rectangular iron core and a lower half rectangular iron core which are relatively arranged to form a dismountable rectangular microcrystal iron core, gaps which are arranged at the left side and the right side and are used for connecting rectangular bus bar are filled with bonding glue and the gaps are sheathed with a connecting sheath, the rectangular bus bar is arranged between the upper half rectangular iron core and the lower half rectangular iron core, the lower half rectangular iron core is provided with a secondary coil, the high voltage tap, medium voltage tap and low voltage tap of the secondary coil are switched by a winding switching relay K and then is connected with a rectification filtering voltage stabilizing circuit. The temperature online monitoring device of the invention gets power from high voltage bus bar or cable induction and is small in volume and wide in current range of bus bar supplying power or cable; as no electrical connection is established with the low voltage side and bus bar adopts equipotential, no puncture of insulation is existed or insulation performance of the original power supply system is influenced, and continuous stable direct current power supply output can be realized.
Description
Technical field
The present invention relates to device for detecting temperature, the temperature on-line monitoring device of a kind of specifically high voltage board bus bar and cable splice and contact.
Background technology
Modern society is high to the dependence of electric energy, and the area that electricity consumption density is big more is high more to the dependence of electricity, thereby the reliability of power-supply unit has been proposed more and more higher requirement.As the trolley type switch cubicle that generally uses at present, owing to adopt plug to connect between isolating switch and the switch cubicle, when dolly and switch cubicle because of making, transport and install the contact loose contact that all will cause such as bad, contact resistance increases, it is too high contact temperature rise to occur, even burns, and causes power failure, these phenomenons are particularly outstanding cashier's office in a shop at high-current switch, and influence greatly.For avoiding the generation of this type of accident, the device of developing a kind of energy at-once monitor contact temperature rise seems very urgent.Because high-voltage switch gear is in high voltage, high-temperature, high-intensity magnetic field and the extremely strong electromagnetic interference environment, realize the thermometric to contact, must solve the adaptability of electronic measuring device under above-mentioned severe environmental conditions.Present thermometric working method has passive type thermometric and two kinds of forms of active thermometric.
The passive type thermometric need receive the far infrared wave that the measurement point width of cloth penetrates, and determines the measurement point temperature by judging the far infrared wavelength; Active thermometric then is directly to measure temperature by the temperature sensor that is embedded in measurement point.The advantage of passive measurement is directly to receive the far infrared wave that measurement point sends by convex lens, and receiver (sensor) can solve high pressure and isolate and the high problem of sensor ambient temperature simple in measurement system structure away from measurement point; Its shortcoming is the measurement point temperature of measuring only in sensor direct-view scope, and this often becomes fatal weakness.
The advantage of active type measure is that the measurement point position is unrestricted, and the sensor mounting arrangements is flexible; Its shortcoming is essential to solve that the high voltage of sensor between functional reliability, sensor and main frame under high temperature, highfield, the strong magnetic field circumstance condition isolated and the working power problem of sensor self.
As mentioned above as can be known, as the additional function system of switch cubicle, temperature measuring equipment must solve following problem:
(1) high pressure is isolated: realize the high-tension apparatus on-line monitoring, at first will solve the high pressure isolating problem.In general, addressed this problem two approach: the one, to isolate by the space, another is to isolate by optical fiber.The space isolates, and signal can be transmitted or the radio transmission by light.Exist the creeping discharge problem and isolate, to need long along the face creepage distance by optical fiber.
(2) interference protection measure: high-tension switch cabinet operates in the state of high voltage, big electric current, strong electromagnetic transient also appears in systematic failures moment, these all produce highfield, magnetic field and strong electromagnetic, and this is very unfavorable for microelectronics system and feeble signal processing.For eliminating these interference, adopt soft, hardware anti-interference measure simultaneously, Applied Digital coding, decoding technique are rejected undesired signal, and have been used the software filtering technology on software design; On hardware, adopt metallic shield, strengthen filtering at different levels and eliminate high frequency interference.
(3) power supply mode: be the influence of elimination highfield, the same noble potential of Temperature Detector and point for measuring temperature place, the sensors work power supply can not be supplied with from the outside, can only be produced by inside, for this reason, an inductive coil is installed as power supply on main conductive circuit.
(4) thermal stability: Temperature Detector is installed on the main conductive circuit, and the measurement point temperature can reach more than 120 ℃, and this just requires detecting device that good thermal stability is arranged.
(5) practicality: practical application must accomplish reliable operation, simple in structure, volume is small and exquisite, be convenient to install and do not influence the structural behaviour of switch cubicle, and the price of product is susceptible to user acceptance.
(6) for realizing above-mentioned target, select general, standard, components and parts reliably for use, under the prerequisite that guarantees actual needs, both reduced cost, be convenient to installation.
Summary of the invention
At the defective that exists in the prior art, the object of the present invention is to provide the temperature on-line monitoring device of a kind of high voltage board bus bar and cable splice and contact, solve following two problems: (1) power supply mode problem; (2) high pressure isolating problem.
For reaching above purpose, the technical scheme that the present invention takes is:
The temperature on-line monitoring device of a kind of high voltage board bus bar and cable splice and contact, the data acquisition device that comprises power taking power supply and infrared communication, it is characterized in that: described power taking power supply comprises that first rectangle iron core 1 and second rectangle iron core 2 are oppositely arranged the detachable rectangle crystallite iron core of formation, the gap location that being used to of the left and right sides connects rectangular bus bar is filled with bonded adhesives 7, and described gap location is set with and connects sheath 4, rectangular bus bar 3 is arranged between first rectangle iron core 1 and second rectangle iron core 2, second rectangle iron core 2 is provided with secondary power taking coil 5, the high pressure tap 11 of secondary power taking coil 5, after tap 12 of middle pressure and low pressure tap 13 are switched by winding transfer relay K, be connected with rectification filtering voltage stabilizing circuit 6, the material of first rectangle iron core 1 and second rectangle iron core 2 is a ultramicro-crystal alloy.
On the basis of technique scheme, rectification filtering voltage stabilizing circuit 6 adds DC/DC conversion mu balanced circuit for rectifying and wave-filtering.
On the basis of technique scheme, winding transfer relay K and rectifying and wave-filtering add and are parallel with great power bidirectional TVS Transient Voltage Suppressor-TVS-1, TVS-2 between DC/DC conversion mu balanced circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of current rectifying and wave filtering circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of DC/DC translation circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of DC/DC translation circuit.
On the basis of technique scheme, the data acquisition device of described infrared communication, comprise the simulated measurement input circuit 91, switching value input circuit 92, lithium battery power supply road 93, infrared emission circuit 95 and the infrared receiving circuit 96 that are connected with embedded microcontroller 94 respectively, infrared emission circuit 95 comprises the infrared transmitting tube of a plurality of series connection.
On the basis of technique scheme, infrared emission circuit 95 comprises that 3 are the infrared transmitting tube that isosceles triangle distributes.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube of 4 rectangular distributions.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube that is fan-shaped distribution more than 5.
On the basis of technique scheme, infrared emission circuit 95 comprises 9 infrared transmitting tubes by 3 * 3 matrix distribution.
On the basis of technique scheme, comprise in the embedded microcontroller 94 that at least one is used to connect the RS232 serial ports of PC.
On the basis of technique scheme, the model of embedded microcontroller 94 is C8051F350.
On the basis of technique scheme, the model of embedded microcontroller 94 is C8051F350.
The temperature on-line monitoring device of high voltage board bus bar of the present invention and cable splice and contact, dispose the high voltage bus power taking power supply of detachable rectangle crystallite iron core, take from high voltage bus or cable induction power taking, volume is little, the bus of power supply or the range of current of cable are big, owing to low-pressure side any being electrically connected do not arranged, adopt the equipotential mode with bus, there is not insulation breakdown or influences the insulating property of former electric power system, can realize exporting continuously stable dc power supply.Have the following advantages:
1, first rectangle iron core 1 and second rectangle iron core 2 adopt ultramicro-crystal alloys, and it is little to have a volume, magnetic field intensity height, the advantage that eddy current loss is little.
2, first rectangle iron core 1 and second rectangle iron core 2 constitute detachable rectangle crystallite iron core, are convenient to install and construction.
3, its stationary device can adopt buckle structure, convenient fixing.
4, adopt secondary coil, can in the current rectifying and wave filtering circuit of back, can switch the number of turn of secondary winding adaptively according to the size of bus current, mu balanced circuit still obtains stable DC voltage when the bus current wide fluctuations.
The temperature on-line monitoring device of high voltage board bus bar of the present invention and cable splice and contact, also dispose the data acquisition device of micropower infrared-communication, the mode that adopts the space to isolate has solved the high pressure isolating problem, the infrared light that utilizes the 940nm near-infrared band is for transmitting the carrier of information, adopt a plurality of power valve series connection to send communication simultaneously, make the covering orientation angle of data communication increase, it is far away that communication distance becomes, and can reach about 8 meters farthest.Embedded microcontroller C8051F350 has analog/digital converter A/D, program can dynamically change the crystal oscillator ground frequency that self works, therefore can adopt the mode that changes frequency of operation, make the low in energy consumption of microcontroller, supply voltage is when 3.6V, 3～5mA when not communicating by letter, momentary current is at 15mA during communication.
Infrared communication is to utilize the infrared ray of 940nm near-infrared band for transmitting the carrier of information, i.e. communication channel.Transmitting terminal pulse-time modulation (PPM) mode, binary digital signal is modulated into the pulse train of a certain frequency, and utilize this pulse train to drive infrared emission tube and outwards launch infrared light with the form of light pulse, and receiving end converts the light pulse signal that receives to electric signal, give demodulator circuit after through processing such as amplifications, filtering and carry out demodulation, export after being reduced into binary number electrical signal.In brief, the essence of infrared communication is carried out modulation and demodulation to binary digital signal exactly, so that utilize infrared channel to transmit, and the infrared communication interface is exactly the modulator-demodular unit at infrared channel.Infrared communication adopts point-to-point Data Transport Protocol, is the Radio Transmission Technology that generally adopts in the world at present.It adopts the near infrared ray in the infrared band, and wavelength is between 0.75um to 25um, and generally between 0 to 1 meter, its frequency is higher than microwave and is lower than visible light communication distance.
Description of drawings
The present invention has following accompanying drawing:
Fig. 1 structural representation of the present utility model
The automatically switch control circuit of power taking coil turn of Fig. 2
The automatically switch control relay circuit of power taking coil turn of Fig. 3
Fig. 4 rectification and overvoltage crowbar
The functional block diagram of Fig. 5 DC/DC translation circuit chip
Fig. 6 DC/DC translation circuit figure
Fig. 7 adopts linear voltage-stabilizing circuit and the pin key diagram of NCP699
Output of Fig. 8 linear voltage-stabilizing circuit and overvoltage crowbar figure
The structured flowchart of the data acquisition device of Fig. 9 micropower infrared-communication
Figure 10 infrared emission circuit embodiments
Figure 11 lithium battery power supply road embodiment
Figure 12 embedded microcontroller embodiment
The structured flowchart embodiment of Figure 13 infrared data receiving trap
The receiving circuit of Figure 14 infrared data communication and PC host computer communication interface circuit embodiment
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
The invention discloses the temperature on-line monitoring device of a kind of high voltage board bus bar and cable splice and contact, the data acquisition device that comprises power taking power supply and infrared communication, described power taking power supply comprises that first rectangle iron core 1 and second rectangle iron core 2 are oppositely arranged the detachable rectangle crystallite iron core of formation, the gap location that being used to of the left and right sides connects rectangular bus bar is filled with bonded adhesives 7, and described gap location is set with and connects sheath 4, rectangular bus bar 3 is arranged between first rectangle iron core 1 and second rectangle iron core 2, second rectangle iron core 2 is provided with secondary power taking coil 5, the high pressure tap 11 of secondary power taking coil 5, after tap 12 of middle pressure and low pressure tap 13 are switched by winding transfer relay K, be connected with rectification filtering voltage stabilizing circuit 6, the material of first rectangle iron core 1 and second rectangle iron core 2 is a ultramicro-crystal alloy.
On the basis of technique scheme, rectification filtering voltage stabilizing circuit 6 adds DC/DC conversion mu balanced circuit for rectifying and wave-filtering.
On the basis of technique scheme, winding transfer relay K and rectifying and wave-filtering add and are parallel with great power bidirectional TVS Transient Voltage Suppressor-TVS-1, TVS-2 between DC/DC conversion mu balanced circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of current rectifying and wave filtering circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of DC/DC translation circuit.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of DC/DC translation circuit.
On the basis of technique scheme, the data acquisition device of described infrared communication, comprise the simulated measurement input circuit 91, switching value input circuit 92, lithium battery power supply road 93, infrared emission circuit 95 and the infrared receiving circuit 96 that are connected with embedded microcontroller 94 respectively, infrared emission circuit 95 comprises the infrared transmitting tube of a plurality of series connection.
On the basis of technique scheme, infrared emission circuit 95 comprises that 3 are the infrared transmitting tube that isosceles triangle distributes.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube of 4 rectangular distributions.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube that is fan-shaped distribution more than 5.
On the basis of technique scheme, infrared emission circuit 95 comprises 9 infrared transmitting tubes by 3 * 3 matrix distribution.
On the basis of technique scheme, comprise in the embedded microcontroller 94 that at least one is used to connect the RS232 serial ports of PC.
On the basis of technique scheme, the model of embedded microcontroller 94 is C8051F350.
On the basis of technique scheme, the model of embedded microcontroller 94 is C8051F350.
Power taking power supply described in the present invention is a kind of high voltage bus power taking power supply of detachable rectangle crystallite iron core, be mainly used in the high voltage bus power taking, be applied in the supervisory system in high-pressure system loop, as the high-voltage switch gear monitoring temperature of high-voltage board and the current measurement of bus, replace and use powered battery, relate in particular to bus and high-tension cable and pass the crystallite iron core as primary coil, the coil that is wrapped in the crystallite iron core provides Alternating Current Power Supply as the secondary secondary coil to current rectifying and wave filtering circuit, press by mu balanced circuit output galvanic current again, for the high-pressure side secondary instrument provides electric energy.As Fig. 1, shown in 2, the high voltage bus power taking power supply of detachable rectangle crystallite iron core of the present invention, comprise by first rectangle iron core 1 and second rectangle iron core 2 and be oppositely arranged the detachable rectangle crystallite iron core that constitutes, the gap location that being used to of the left and right sides connects rectangular bus bar is filled with bonded adhesives 7, and described gap location is set with and connects sheath 4, rectangular bus bar 3 is arranged between first rectangle iron core 1 and second rectangle iron core 2, second rectangle iron core 2 is provided with secondary power taking coil 5, the high pressure tap 11 of secondary power taking coil 5, after tap 12 of middle pressure and low pressure tap 13 are switched by winding transfer relay K, be connected with rectification filtering voltage stabilizing circuit 6, the material of first rectangle iron core 1 and second rectangle iron core 2 is a ultramicro-crystal alloy.In the technique scheme, the rectangular profile of detachable rectangle crystallite iron core is to pass iron core and be convenient to installation easily and efficiently for the ease of rectangular bus bar, the ultramicro-crystal alloy that iron core uses is a kind of novel soft magnetic material, the ultramicro-crystal alloy soft magnetic material has superior comprehensive electromagnetic performance and good prospects for application, has the advantage that volume is little, performance is high, cheap, begun progressively to replace electromagnetic devices such as traditional silicon steel, permalloy, ferrite, be used for the electromagnetic device field.
On the basis of technique scheme, rectification filtering voltage stabilizing circuit 6 adds DC/DC conversion mu balanced circuit for rectifying and wave-filtering.Specifically can be divided into current rectifying and wave filtering circuit, DC/DC translation circuit and mu balanced circuit three bulks, all devices of rectification filtering voltage stabilizing circuit 6 can adopt the SMT surface mount process, make its volume little, the technology compactness, and reliability improves.In the technique scheme, direct current regulation circuit in the rectification filtering voltage stabilizing circuit 6 adopts the DC/DC translation circuit, still can operate as normal under the situation of rectifying and wave-filtering output voltage fluctuation range big (4V-40V), and output current is big, can reach the electric current output of 1A.The DC/DC translation circuit can adopt self-oscillatory MC34063 switching voltage chip, the functional block diagram of MC34063 switching voltage chip as shown in Figure 5, Fig. 6 is a specific embodiment that can be used for the DC/DC translation circuit among the present invention, its peripheral circuit is simple, practical, cost is low.Rectification shown in Figure 4 and overvoltage crowbar are a specific embodiment that can be used for the current rectifying and wave filtering circuit among the present invention, and the alternating voltage of input is received D1 by the JPW connector, D2; D3, D4, D5; rectification and overvoltage crowbar that D6 forms; R1 and C1 eliminate high-frequency signal and surge pulse, and D1 and D6 are two-way TVS surge voltage absorption tubes, C2; C3; C4 and C5 play filter action, and commutator tube adopts SS14 Xiao Te machine based diode, reduces the pressure drop of diode.Fig. 7,8 is a specific embodiment that can be used for the mu balanced circuit among the present invention; Fig. 7 is for adopting linear voltage-stabilizing circuit and the pin key diagram of NCP699; Fig. 8 is linear voltage-stabilizing circuit output and overvoltage crowbar figure; as required; NCP699 can select to export 3.3V and 3.0V, and wherein U2 is the output voltage overvoltage crowbar, and model is MMBZ5V6ALT1; be equivalent to the effect of a stabilivolt, prevent the output voltage overvoltage.C8, C9, C10, C11 and U3 form linear low pressure reduction mu balanced circuit.
On the basis of technique scheme, as shown in Figure 2, winding transfer relay K and rectifying and wave-filtering add and are parallel with great power bidirectional TVS Transient Voltage Suppressor-TVS-1, TVS-2 between DC/DC conversion mu balanced circuit, can prevent to exchange input high-voltage breakdown commutator tube and the filtering circuit overvoltage damages.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of current rectifying and wave filtering circuit, can prevent the overvoltage of filtering output direct current, damage the DC/DC conversion mu balanced circuit and the chip of its back.The concrete set-up mode of high-power unidirectional TVS transient voltage suppresser spare can adopt existing techniques in realizing.
On the basis of technique scheme, be provided with high-power unidirectional TVS transient voltage suppresser spare at the output terminal of DC/DC translation circuit, can prevent the overvoltage of DC/DC conversion mu balanced circuit output direct current, damage corresponding circuit and chip that it is powered later.The concrete set-up mode of high-power unidirectional TVS transient voltage suppresser spare can adopt existing techniques in realizing.
The present invention provides more stable voltage in order to solve the different coil tap of under bus current wide fluctuations situation switching for the rectification circuit of back; make the output voltage stabilization of rectification filtering voltage stabilizing circuit 6; the control circuit of automatic switchover power taking coil turn as shown in Figure 2; by winding transfer relay K often open with normally closed contact under control circuit shown in Figure 3 control; the number of turn of automatic switchover power taking coil; regulate the alternating voltage size of output, and under the protection of TVS1 and TVS2, prevent the influence of surge voltage the back circuit.That is: according to the size of bus current, can switch the number of turn of secondary winding adaptively, under the situation of bus current wide fluctuations, mu balanced circuit still obtains galvanic current and presses.In the control relay circuit of automatic switchover power taking coil turn shown in Figure 3; when VIN is smaller; not conducting of D8; the basis set of Q1 is a low level; not conducting of Q1 makes the higher tap of the number of turn receive input protection and current rectifying and wave filtering circuit by the normally closed contact of winding transfer relay K (model is HRAH-S-5-DC5V).Otherwise; when VIN when higher; the D8 conducting; the basis set of Q1 is a high level, the Q1 conducting, and relay gets electric closure; make the lower tap of the number of turn receive input protection and current rectifying and wave filtering circuit by the normally opened contact of relay K; the number of turn of automatic switchover power taking coil is regulated the alternating voltage size of output, and prevent the influence of surge voltage to the back circuit under the protection of TVS-1 and TVS-2.
The course of work of power taking power supply is as follows: adopt the coil (similar open type punching current transformer) of detachable crystallite rectangle iron core to obtain the induction AC power from high voltage bus or Voltage Cable Lines Construction; switch winding through winding transfer relay K and be connected to current rectifying and wave filtering circuit; again by the voltage stabilizing of DC/DC voltage-stabilizing switch power source circuit; the output galvanic current is pressed; to corresponding instrument and instrument; perhaps testing circuit power supply, and in each grade circuit, adopt two-way or unidirectional high-power TVS transient voltage suppresser spare to protect its output circuit.When the input exchange signal overtension of inductive coil, the comparator circuit pilot relay closure by the hysteresis winding switches to the less winding of the number of turn, reduces the alternating voltage of input, prevents to damage the rectifying and wave-filtering and the DC/DC translation circuit of back.
Power taking power supply described in the present invention has the following advantages and function:
(1) according to bus current size and load condition, the number of turn of automatic switchover power taking coil prevents that input ac voltage is too high, damages the mu balanced circuit of back.
(2) adopt TVS1 and TVS2 diode to absorb surge voltage in AC side.
(3) adopt Schottky commutation diode SS14 to constitute rectifier bridge, reduce the voltage drop of rectifier bridge, be under smaller bus current situation, the DC/DC translation circuit of back also can operate as normal.
(4) adopt MC34063 in the DC/DC translation circuit, its input voltage range is wide, can both operate as normal from 4-38V, and also cost is low.
(5) total system adopts SMT Surface Mount technology, and volume is little, satisfies the requirement of hyperbaric environment.
(6) the working voltage rate range is wide, owing to there is not secondary side, as long as satisfy the safe insulation distance,, can use to the UHV (ultra-high voltage) electric power system from low-pressure system.
Among the present invention, the high pressure rectangular bus bar passes through from the centre of rectangle iron core, whole electricity getting device does not have secondary ground connection and Insulation Problems, entire circuit ground reference and high voltage bus are formed the equipotential body, there are not insulation and breakdown problem, and as long as guarantee that adjacent bus directly can at the safe distance of relevant voltage grade.As long as on the bus certain load current is arranged, the coil on second rectangle iron core just can be responded to certain voltage, and under the little situation of bus load electric current, by the switching of relay K, higher voltage is compared in output.
Among the present invention, by four germanium tube SS14 rectification, obtain DC voltage after the filtering, this DC voltage fluctuates very big when the bus current conversion, as long as this voltage conversion between 4V-40V, MC34063 by the back just can obtain stable DC voltage, in order to cooperate the DC voltage of exporting 3.3V, in Fig. 6, choose R3=4.7K Ω with the low pressure reduction mu balanced circuit of linearity of back, R4=2K Ω, W1=1K Ω is in order to finely tune output voltage, to make output voltage about 3.8V, and this voltage is input to NCP699, in the DC voltage of the low Ripple Noise of the output 3.3V of NCP699, supply with corresponding circuit.
In order to guarantee to obtain the upper voltage limit that DC voltage is no more than 38V behind the rectifying and wave-filtering:
1, the ac circuit before rectification and on D1 bi-directional voltage stabilizing pipe, limiting AC voltage is no more than about 25V.
2, the circuit after rectification is by R2 and two-way high-power stabilivolt by R2 and two-way high-power stabilivolt at circuit after the rectification, and the restriction output voltage is no more than 30V, in case overvoltage damages the MC34063 chip.
3, wherein R1 and C1 are instantaneous surge voltage absorbing circuit.
4, C2, C3, C4, C5 are filter capacitor.
As shown in Figure 9, the data acquisition device of infrared communication of the present invention is a kind of data acquisition device of micropower infrared-communication, comprise the simulated measurement input circuit 91, switching value input circuit 92, lithium battery power supply road 93, infrared emission circuit 95 and the infrared receiving circuit 96 that are connected with embedded microcontroller 94 respectively, infrared emission circuit 95 comprises the infrared transmitting tube of a plurality of series connection.The sensing different azimuth of each infrared transmitting tube can simultaneously multi-faceted transmission communication, has increased azimuth firing angle, overcomes because insecure problem of communicating by letter that receiving tube and power valve cause because of misalignment.Circuit described in the technique scheme all can adopt existing techniques in realizing.Infrared emission circuit 95 comprises at least 3 infrared transmitting tubes.The present invention adopts the mode of circuit of the radiating circuit/single infrared receiving tube FT002 of a plurality of infrared emission tubes, thus the little technical matters of receive direction angle when solving existing infrared ray reception/emitter communication.
On the basis of technique scheme, infrared emission circuit 95 comprises that 3 are the infrared transmitting tube that isosceles triangle distributes.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube of 4 rectangular distributions.
On the basis of technique scheme, infrared emission circuit 95 comprises the infrared transmitting tube that is fan-shaped distribution more than 5.
On the basis of technique scheme, infrared emission circuit 95 comprises 9 infrared transmitting tubes by 3 * 3 matrix distribution.
On the basis of technique scheme, comprise in the embedded microcontroller 94 that at least one is used to connect the RS232 serial ports of PC.
On the basis of technique scheme, the model of embedded microcontroller 94 is C8051F350.
Figure 10 is an instantiation of infrared emission circuit 95, by model is the oscillatory circuit that rejection gate U4A, U4B, resistance R 38, R18, R19, C17 and the potentiometer RW1 of 74LS02 forms 38KHz, the square-wave signal of output 38KHz is to 8 pin of U4C, with from the transmission data-signal TXD of embedded microcontroller 4 mutually or after non-, drive the base stage of triode Q6 through resistance R 17, drive three infrared transmitting tube LED-1, LED-2 and the LED-3 of 940nm, R16, C15 and C16 form the power supply decoupling circuit, the influence of the interference ripple when preventing infrared transmitting tube work.This circuit adopts three infrared transmitting tubes to launch work simultaneously, makes the reliability of communication be improved.Come control signal to send by TXD, when the TXD signal is high level, forbid sending infrared signal; When if the TXD signal is low level, oppositely the asynchronous serial data modulation 38KHz carrier wave after promotes Darlington transistor Q6 then, makes infrared transmitting tube send signal.Infrared transmitting tube adopts the infrared diode of power among the HG505, and peak emission wavelength is 940nm, and radiation power is about 50mW.
Figure 11 is a specific embodiment on lithium battery power supply road 93, in DC/DC conversion power supply circuit shown in Figure 11, battery or external power supply are introduced from connector JBATT, after DC/DC conversion integrated circuit MIC4680 and correspondent peripheral circuit, give embedded microcontroller 94 power supplies from the stable 3.3V direct supply of connector J3 output, wherein R10, R33 and C8 form the switch enable circuit of power supply.L1, D14, C9, C10, R11, R12, D15, D16, R13, C12 and C13 form output filtering and holding circuit, and D15 works to prevent power supply overvoltage protection, and D16 works to prevent that power supply from connecing anti-protection.Connector J3 connects two electrolyte layers capacitor C 11 of a jumbo farad level among Figure 11, prevents to send the influence of the dash current of infrared signal to power supply.This power circuit has wide input voltage range, can work the characteristics that power supply ripple is low from 4.5V to 40V.
Figure 12 is a specific embodiment of embedded microcontroller, and its core is that model is the embedded microcontroller of C8051F350, and C8051F350 inside has the A/D converter of 24 delta sigma structures, carries simulation and switches electronic switch.Resistance R 32～R39 and capacitor C 24～C31 form input single order low-pass filter circuit, behind 8 tunnel input simulating signals process input single order low-pass filter circuits from connector JAIN, the input end IN1～IN8 that is connected to the A/D of C8051F350 converts digital signal to.Digital switch quantity signal from connector JIO-1 and connector JIO-2 is read in by microcontroller P00 and P01 mouth (13,14 pin), and corresponding simulating signal and digital signal are carried out the array coding, forms the packet that needs send.R25 and C19 form reset circuit, and the work clock that crystal oscillator 1, R26, C22 and C23 form microcontroller C8051 produces circuit, and R32, R9, C15 form the power supply decoupling filtering circuit of infrared remote receiver receiver.This clock frequency requires dynamically frequency division work in embedded microcontroller internal condition power consumption, to reduce the power consumption of embedded microcontroller.
PC itself does not have the infrared communication interface, the serial line interface 1 that utilizes single-chip microcomputer W77E58 and infrared emission and receiving circuit are formed a communication interface with the infrared data ' s acquisition device, the Infrared Serial interface of PC and single-chip microcomputer W77E58 system, as shown in figure 13.Figure 13 is an infrared data receiving trap structured flowchart, comprises embedded microcontroller W777E58, infrared receiving/transmission radio road and RS232 serial communication level shifting circuit, is responsible for communicating by letter with host computer.The serial line interface that utilizes single-chip microcomputer W77E58 and infrared emission and receiving circuit are formed the communication interface of an infrared data ' s acquisition device, utilize another serial line interface of single-chip microcomputer W77E58 to be connected to the RS232 communication port of PC by the RS232 level shifting circuit, the data of infrared receiving circuit collection are sent to PC by the receiving terminal that W77E58 forms, so that later data storing and analysis.Another serial line interface of W77E58 also can change USB cable by RS232 and be connected to PC and connect USB interface, the data of the collection of the infrared data ' s acquisition device relaying by W77E58 is received and is forwarded to PC, so that later data storing and analysis.That is: comprise two serial ports in the infrared receiving circuit 96 among the microcontroller W77E58, an infrared communication that is used for the infrared data ' s acquisition device, another is used to connect the RS232 serial ports of PC.For satisfying the removable image data of needs of the present invention whenever and wherever possible, the present invention can be connected to the serial ports of PC by the RS232 serial ports, perhaps be connected to the USB interface of PC by the transit cable of RS232 commentaries on classics USB, data can directly store PC into, in real time analyzing and processing and store hard-disk system into.
In the receiving circuit and PC host computer communication interface circuit of infrared data communication shown in Figure 14, adopt special-purpose infrared data communication receiving integrate circuit FT002T (is the RECEIBER device as label among Figure 12) to be connected to 4,5 and 3 pin of J3, it adopts the single-row direct insertion plastic package of 3 pin, and inside comprises automatic bias control circuit, preposition amplification, amplitude limit amplification, bandpass filtering, peak detection, integration comparison and Schmidt's shaping output circuit etc.It has autobias control circuit (ABLC), amplifies strong and weak different signals with equilibrium, cooperates a small amount of outward element again, can finish the infrared signal remote control is received and the repertoire of handling.Infrared signal is after photodiode carries out opto-electronic conversion, after the amplification of the inner process of IC two-stage, bandpass filtering, peak detection and integration shaping, by the 3rd pin output serial data signal RXD.FT002T is the integrated infrared receiver of plastic packaging, without any need for outward element, just can finish all working that receives output and Transistor-Transistor Logic level signal compatibility from infrared ray, it when not having infrared remote-controlled signal high level, it when receiving infrared signal low level, and volume is the same with common plastic packaging triode size, and it is suitable for various infra-red remote controls and infrared data transmission.Figure 14 is the circuit diagram of the specific implementation of Figure 13, forms the data that receiving terminal receives the collection of infrared data ' s acquisition device by W77E58.Infrared receiving demodulation device connects the serial ports 1 that passes through W77E58 by connecting plug-in unit CON5, rejection gate U5A, the effect of U5B and U5C is consistent as Figure 10, produce the infrared modulation signal of 38KHz, the effect of Q2 is controlled infrared transmission as the Q6 among Figure 10, connects infrared transmission pipe at 2 pin of CON5,5 pin of CON5,4 pin and 3 pin are connected infrared receiving demodulation device, demodulate the TXD pin that data-signal is delivered to W77E58 at 3 pin.The logical JP2 of another serial ports pin P13 of W77E58 and P12 is connected to RS232 level transformating chip MAX3232 chip, the data relaying that receives the infrared data ' s acquisition device is forwarded to PC, so that later data storing and analysis, the RS232 level of this serial ports output is connected to the PC serial line interface.In this circuit, form power-supplying circuit by transformer T1 and rectifier bridge DR1, mu balanced circuit U8LM7805, not gate U4B forms the reception of communicating by letter and sends indicating circuit with U4C, connects light emitting diode at JLED, and indication sends and receives duty.
The present invention utilizes the infrared ray of 940nm near-infrared band for transmitting the carrier of information, adopt the embedded microcontroller and the infrared communication technique of low-power consumption, substitute common electromagnetism radio communication, finish the data acquisition communication function, whole collector adopts surface mounting technology, make that the collector volume is little, low in energy consumption, portable and with low cost characteristics, removable whenever and wherever possible as required image data, through the receiver that links to each other with PC, be connected to the serial ports of PC by the RS232 serial ports, perhaps the transit cable that changes USB by RS232 is connected to the USB interface of PC, stores PC into, in real time analyzing and processing and store hard-disk system into.
In sum, the advantage of the data acquisition device of described infrared communication is:
1, owing to adopted the infrared data communication technology, compare and the radio magnetic wave data transmission, there is not electromagnetic interference (EMI), the particular surroundings personnel that are specially adapted to power high voltage system, hospital and carry the pacemaker personnel use.The present invention adopts a plurality of infrared/single receiving trap, comprise the microcontroller C8051F350 of a plurality of infrared emission tubes, infrared receiver tube, infrared data emission modulation circuit and data acquisition control, thereby solve the technical matters that existing infrared ray reception/emitter can not be surveyed a plurality of directional data communications simultaneously.
2, owing to adopt the infrared transmission data; formed the non-contacting mode of data communications equipment; thoroughly isolated the influence of thunder and lightning, surge voltage, line short or induction current etc.; really played the effect of general protection serial communication; while can also solve because of environmental factor or be subjected to the work restriction can't adopt the equipment of wire communication, has certain practicality.
3, adopt Infrared to carry out signal and transmit, it has thorough, simple in structure, the characteristics such as antijamming capability strong, reliable operation of isolating.
4, infrared temperature collector and point for measuring temperature are in same equipotential body, reduce electric field effects.
5, for eliminating random disturbance, utilize contact temperature to change characteristics relatively slowly, the check point signal is received repeatedly, repeatedly gather, it is reliable to guarantee data to get rid of abnormal data, and complete machine has had better anti-jamming capability, and measurement data is reliable and stable.
6, the switch cubicle working current alters a great deal, generally can reach tens times, for guaranteeing that inductive coil can provide comparatively stable power, utilize crystallite iron core magnetic saturation principle, suitably select core section, the normal excitation of iron core during little electric current, core sataration during big electric current, thereby provide amplitude of variation less power supply,, provide reliable and stable power supply to detecting device again by the electronic regulation device.
7, connect with lead between temperature probe and the Temperature sampler, detecting device can be away from the high-temperature region, is installed in temperature lower, galvanic circle (generally can below 80 ℃), thereby has reduced the resistant to elevated temperatures requirement of detecting device, makes system reach higher thermal stability.
The data acquisition device application example of infrared communication
In high tension loop, often to monitor various parameters of electric power, as temperature, voltage, electric current, vibration and insulation status etc., high-pressure side itself can't power, and can not take resistance and capacity earth dividing potential drop to power, can influence the insulating property of system like this, can adopt this infrared data ' s acquisition device, utilize the high power lithium battery power supply, corresponding cost is low, system is simple, the reliability height.Owing to any being electrically connected do not arranged with low-pressure side, adopt the equipotential mode with bus, there is not insulation breakdown or influences the insulating property of former electric power system.Infrared biography data acquisition unit is made simple, and is easy to use.
As mentioned above, the temperature on-line monitoring device of high voltage board bus bar disclosed by the invention and cable splice and contact, the circuit part of this device mainly comprise the wireless temperature collector of the infrared communication of a kind of high voltage bus induction power taking power supply that adopts the crystallite iron core and low-power consumption.Wherein, high voltage bus induction power taking power supply is characterized in that being made up of crystallite rectangle iron core, tapped coil, rectifying and wave-filtering and mu balanced circuit, iron core is symmetrical detachable rectangle micro crystal material, and rectangular profile is to pass iron core and installation for the ease of rectangular bus bar.The ultramicro-crystal alloy that iron core uses is a kind of novel soft magnetic material, the ultramicro-crystal alloy soft magnetic material has superior comprehensive electromagnetic performance and good prospects for application, has the advantage that volume is little, performance is high, cheap, begun progressively to replace electromagnetic devices such as traditional silicon steel, permalloy, ferrite, be used for the electromagnetic device field.Many taps secondary coil solves and to switch different coil taps provide more stable voltage for the rectification circuit of back under bus current wide fluctuations situation, makes the output voltage stabilization of mu balanced circuit.And wireless several temperature of infrared temperature data communication are according to collector, it is characterized in that the power supply of high voltage bus induction power taking power supply down, form with the microprocessor C8051F350 and the infrared digital communication temperature data transmission circuit that have analog/digital conversion A/D low-power consumption by semiconductor temperature sensor LM35, whole Temperature sampler adopts surface mounting technology, makes collector volume characteristics little, low in energy consumption, portable and with low cost.Temperature sampler and temperature display terminal are by the infrared temperature data communication, the bus and the joint of cable and the temperature of contact that on the LCD screen, show corresponding phase, be connected to the serial ports of PC by RS485 or RS232, perhaps be connected to the USB interface of PC by the transit cable of RS232/RS485 commentaries on classics USB, the storing temperature temperature data is to PC, in real time analyzing and processing and store hard-disk system into.Owing to adopted the infrared temperature data communication technology, compare and the transmission of radio magnetic wave temperature data, there is not electromagnetic interference (EMI), be specially adapted to the power high voltage system.The present invention adopts the temperature display terminal of a plurality of infrared/single receiving trap, comprise the microcontroller C8051F350 of a plurality of polyphone infrared emission tubes, infrared receiver tube, infrared temperature data transmission modulation circuit and temperature data acquisition control, thereby solve the technical matters that existing infrared ray reception/emitter can not be surveyed the communication of a plurality of direction temperature data simultaneously.
The present invention has self-powered function, adopts digital thermometric, has solved high pressure and has isolated a difficult problem, and the real time temperature of reliable detection high-voltage switch gear three-phase contact in time, accurately sends alerting signal, guarantees mains supply safety.The present invention adopts the semiconductor temperature sensor element to high pressure, the joint of UHV (ultra-high voltage) or high voltage bus and high-tension cable and the contact of high-voltage switch gear etc. carry out online temperature monitoring system, the novel crystallite iron core bus induction power supply and the temperature data acquisition device of infrared temperature data communication have been adopted, the infrared ray that utilizes the 950nm near-infrared band is for transmitting the carrier of information, adopt the embedded microcontroller and the infrared communication technique of low-power consumption, substitute common electromagnetism radio communication, finish the temperature data acquisition communication function, whole collector adopts surface mounting technology, make that the collector volume is little, low in energy consumption, portable and with low cost characteristics, removable whenever and wherever possible as required collecting temperature data, through the receiver that links to each other with PC, be connected to the serial ports of PC by the RS232 serial ports, perhaps be connected to the USB interface of PC by the transit cable of RS232 commentaries on classics USB, store PC into, in real time analyzing and processing and store hard-disk system into.
At first introduce the design of the high voltage bus induction power taking power supply of crystallite iron core: be the problem that needs solution at the monitoring power supply of present high-pressure side, develop a kind of crystallite iron core high voltage bus or cable induction get can power power supply, can realize continuous online output DC source.
The present invention seeks to realize like this: many taps high voltage bus induction power taking coil of detachable rectangle crystallite rectangle iron core, it is by detachable rectangle crystallite iron core, tapped coil, current rectifying and wave filtering circuit and DC voltage-stabilizing output are formed, relay 1 normally closed interlock that tapped coil on the crystallite iron core of fixing aluminium box switches through control earlier is connected to current rectifying and wave filtering circuit and connects, the DC voltage of rectifying and wave-filtering output is pressed by mu balanced circuit output galvanic current, this DC voltage and voltage comparator circuit are relatively, if be higher than the magnitude of voltage of setting, relay 1 gets electric closure, switch to the little winding of the secondary number of turn, reduce the alternating voltage of secondary input, like this no matter the load current of former limit high voltage bus side is bigger, still can export more stable DC voltage, output power is according to the load of DC voltage, the sectional area of respective design crystallite iron core is determined, it is characterized by detachable rectangle crystallite iron core, coil adopts many taps outlet method.Have the following advantages:
1, iron core adopts the crystallite iron core, the magnetic permeability height, and magnetic strength intensity height, eddy current loss is little.
2, adopt multitap secondary coil.
3, switch the winding of many taps secondary coil adaptively, it is big to be suitable for bus and cable load current scope.
4, the direct current regulation circuit of rear end adopts the DC/DC translation circuit, still can operate as normal under the situation of rectifying and wave-filtering output voltage fluctuation range big (4V-40V), and output current is big, can reach the electric current output of 1A.
5, the direct current regulation circuit of rear end adopts the DC/DC DC transfer circuit to adopt self-oscillatory MC34063 switching voltage chip, and peripheral circuit is simple.
6, adopt great power bidirectional TVS transient voltage suppresser spare in the interchange output of its secondary coil, prevent to exchange input high-voltage breakdown commutator tube and filtering circuit overvoltage damage.
7, adopt high-power unidirectional TVS transient voltage suppresser spare at its commutator tube and filtering circuit output circuit, prevent the overvoltage of filtering output direct current, damage the DC/DC DC transfer circuit and the chip of its back.
8, adopt high-power unidirectional TVS transient voltage suppresser spare at its DC/DC DC converting output circuit, prevent the overvoltage of DC/DC DC converting output direct current, damage corresponding circuit and chip that it is powered later.
9, all devices adopt the SMT surface mount process, make its volume little, the technology compactness, and reliability improves.
Apparatus of the present invention adopt the coil (similar open type punching current transformer) of detachable crystallite rectangle iron core to obtain the induction AC power from high voltage bus or Voltage Cable Lines Construction; switch winding through relay and be connected to current rectifying and wave filtering circuit; again by the voltage stabilizing of DC/DC voltage-stabilizing switch power source circuit; the output galvanic current is pressed; to corresponding instrument and instrument; perhaps testing circuit power supply, and in each grade circuit, adopt two-way or unidirectional high-power TVS transient voltage suppresser spare to protect its output circuit.When the input exchange signal overtension of inductive coil, the comparator circuit pilot relay closure by the hysteresis winding switches to the less winding of the number of turn, reduces the alternating voltage of input, prevents to damage the rectifying and wave-filtering and the DC/DC translation circuit of back.
Next introduces the design of the temperature data acquisition device of infrared data communication: infrared communication of the present invention is to utilize the infrared ray of 940nm near-infrared band for transmitting the carrier of information, adopt the simultaneously multi-faceted transmission communication of a plurality of power valve polyphone, the position angle of the directive property of feasible communication is big, communication distance is far away, can reach between 0 to 8 meter, adopt the mode that changes frequency of operation, make the low in energy consumption of microcontroller, supply voltage is when 3.6V, 3-5mA when not communicating by letter, momentary current is at 15mA during communication.
The present invention adopts a plurality of infrared/single receiving trap, comprise the microcontroller C8051F350 of a plurality of polyphone infrared emission tubes, infrared receiver tube, infrared data emission modulation circuit and data acquisition control, thereby solve the technical matters that existing infrared ray reception/emitter can not be surveyed a plurality of directional data communications simultaneously.
The microcontroller of this device is C8051F350, inside has the A/D converter of 24 delta sigma structures, carry simulation and switch electronic switch, 8 tunnel simulating signals from 1 to 8 temperature sensor LM35 input of connector JAIN are formed input single order low-pass filter circuit through R32 and C24 etc., the input end that is connected to the A/D of C8051F350 converts digital signal to, as shown in Figure 9.Digital switch quantity signal from JIO-1 and JIO-1 is read in by microcontroller P0 and P1 mouth, and corresponding simulating signal and digital signal are carried out the array coding, forms the packet that needs send, and its pack arrangement is as follows:
Send the structure of packet
The invention process is by two and half rectangle crystallite iron cores, many taps power taking coil, secondary coil number of turn automatic control circuit and relay commutation circuit, current rectifying and wave filtering circuit, DC/DC translation circuit MC34063 and linear low pressure reduction mu balanced circuit NCP699 form, as required, NCP699 can select to export 3.3V and 3.0V, its mesohigh rectangular bus bar passes through from the centre of rectangle iron core, whole electricity getting device does not have secondary ground connection and Insulation Problems, entire circuit ground reference and high voltage bus are formed the equipotential body, there are not insulation and breakdown problem, and as long as guarantee that adjacent bus directly can at the safe distance of relevant voltage grade.
As long as on the bus certain load current is arranged, tapped coil on second rectangle iron core just can be responded to certain voltage, under the little situation of bus load electric current, switching by relay K, higher voltage is compared in output, by four germanium tube SS14 rectification, obtain DC voltage after the filtering, this DC voltage fluctuates very big when the bus current conversion, as long as the conversion between 4V-40V of this voltage, MC34063 by the back just can obtain stable DC voltage, in order to cooperate the DC voltage of exporting 3.3V, in Fig. 5, choose R3=4.7K Ω with the low pressure reduction mu balanced circuit of linearity of back, R4=2K Ω, W1=1K Ω is in order to finely tune output voltage, to make output voltage about 3.8V, and this voltage is input to NCP699, in the DC voltage of the low Ripple Noise of the output 3.3V of NCP699, supply with corresponding circuit.
For the ease of installing and debugging, iron core is taked two and half rectangle crystallite iron cores, is equivalent to open type current transformer structure, in order to guarantee that when instantaneous big bus load electric current passes through the power taking coil does not produce high pressure output, makes the iron core magnetic flux saturated during design.
Claims (11)
1. the temperature on-line monitoring device of a high voltage board bus bar and cable splice and contact, the data acquisition device that comprises power taking power supply and infrared communication, it is characterized in that: described power taking power supply comprises that first rectangle iron core (1) and second rectangle iron core (2) are oppositely arranged the detachable rectangle crystallite iron core of formation, the gap location that being used to of the left and right sides connects rectangular bus bar is filled with bonded adhesives (7), and described gap location is set with and connects sheath (4), rectangular bus bar (3) is arranged between first rectangle iron core (1) and second rectangle iron core (2), second rectangle iron core (2) is provided with secondary power taking coil (5), the high pressure tap (11) of secondary power taking coil (5), after tap (12) of middle pressure and low pressure tap (13) are switched by winding transfer relay K, be connected with rectification filtering voltage stabilizing circuit (6), the material of first rectangle iron core (1) and second rectangle iron core (2) is a ultramicro-crystal alloy;
Rectification filtering voltage stabilizing circuit (6) adds DC/DC conversion mu balanced circuit for rectifying and wave-filtering;
Winding transfer relay K and rectifying and wave-filtering add and are parallel with great power bidirectional TVS Transient Voltage Suppressor-TVS-1, TVS-2 between DC/DC conversion mu balanced circuit.
2. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 1 and cable splice and contact is characterized in that: the output terminal at current rectifying and wave filtering circuit is provided with high-power unidirectional TVS transient voltage suppresser spare.
3. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 1 and cable splice and contact is characterized in that: the output terminal at DC/DC conversion mu balanced circuit is provided with high-power unidirectional TVS transient voltage suppresser spare.
4. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 1 and cable splice and contact, it is characterized in that: the data acquisition device of described infrared communication, comprise the simulated measurement input circuit (91), switching value input circuit (92), lithium battery power supply road (93), infrared emission circuit (95) and the infrared receiving circuit (96) that are connected with embedded microcontroller (94) respectively, infrared emission circuit (95) comprises the infrared transmitting tube of a plurality of series connection.
5. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 4 and cable splice and contact is characterized in that: infrared emission circuit (95) comprises that 3 are the infrared transmitting tube that isosceles triangle distributes.
6. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 4 and cable splice and contact is characterized in that: infrared emission circuit (95) comprises the infrared transmitting tube of 4 rectangular distributions.
7. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 4 and cable splice and contact is characterized in that: infrared emission circuit (95) comprises the infrared transmitting tube that is fan-shaped distribution more than 5.
8. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 4 and cable splice and contact is characterized in that: infrared emission circuit (95) comprises 9 infrared transmitting tubes by 3 * 3 matrix distribution.
9. as the temperature on-line monitoring device of claim 4 or 5 or 6 or 7 or 8 described high voltage board bus bars and cable splice and contact, it is characterized in that: comprise in the embedded microcontroller (94) that at least one is used to connect the RS232 serial ports of PC.
10. as the temperature on-line monitoring device of claim 4 or 5 or 6 or 7 or 8 described high voltage board bus bars and cable splice and contact, it is characterized in that: the model of embedded microcontroller (94) is C8051F350.
11. the temperature on-line monitoring device of high voltage board bus bar as claimed in claim 9 and cable splice and contact is characterized in that: the model of embedded microcontroller (94) is C8051F350.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101775656A CN101666686B (en) | 2009-09-16 | 2009-09-16 | Online monitoring device for temperature of high voltage board bus bar, cable joint and contact |
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| CN2009101775656A CN101666686B (en) | 2009-09-16 | 2009-09-16 | Online monitoring device for temperature of high voltage board bus bar, cable joint and contact |
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| CN101666686B true CN101666686B (en) | 2011-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102842967B (en) * | 2011-06-22 | 2014-12-17 | 曾奕 | Power transmission line self-power collecting device |
| CN102798783B (en) * | 2012-08-14 | 2015-05-13 | 广东电网公司佛山供电局 | Method and system for diagnosing overheat fault of joints of gas insulated switch equipment bus |
| CN103207026A (en) * | 2013-03-28 | 2013-07-17 | 无锡市崇安区科技创业服务中心 | Temperature monitoring system for high voltage switch cabinet |
| CN105531572A (en) * | 2013-09-11 | 2016-04-27 | 3M创新有限公司 | Systems and methods for monitoring temperature of electrical conductor |
| CN103592043B (en) * | 2013-11-27 | 2015-10-28 | 国家电网公司 | A kind of low-voltage cable contact temperature on-Line Monitor Device |
| CN104022488B (en) * | 2014-05-20 | 2017-10-17 | 江苏大学 | The on-line monitoring and automatic safety device of high-power electric system busbar overheat |
| CN104390725A (en) * | 2014-10-14 | 2015-03-04 | 安徽科盟电子科技有限公司 | Intelligent self-power-supplying wireless temperature measurement system |
| CN104682731A (en) * | 2015-03-11 | 2015-06-03 | 禾邦电子（中国）有限公司 | Protection type bridge rectifier circuit and module comprising the same |
| CN106768443A (en) * | 2016-12-28 | 2017-05-31 | 国网山东省电力公司济南供电公司 | A kind of high-tension cable conductor temperature measurement apparatus |
| CN106773993A (en) * | 2017-01-04 | 2017-05-31 | 国网山东省电力公司菏泽供电公司 | Field data acquiring terminal and system |
| CN107449454A (en) * | 2017-08-30 | 2017-12-08 | 红云红河烟草(集团)有限责任公司 | A kind of ROFA transport trolleys high frequency cable Anti-scratching detection means and method |
| CN109632105A (en) * | 2018-12-24 | 2019-04-16 | 国网山西省电力公司检修分公司 | A kind of state prompt method, device, equipment and the storage medium of wire-connection point |
| CN111006791B (en) * | 2019-12-26 | 2021-08-24 | 北京利德华福电气技术有限公司 | Temperature measuring device of rectifier transformer |
| GB2607143A (en) * | 2020-10-07 | 2022-11-30 | Em Elektrik Malzemeleri Yuklenim Sanayi Ticaret Anonim Sirketi | Intelligent link box with early warning system for online monitoring of sheath bonding system and high voltage cable accessories |
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