CN111381120A - Photoelectric induction detection method and circuit applied to high-voltage parts - Google Patents
Photoelectric induction detection method and circuit applied to high-voltage parts Download PDFInfo
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- CN111381120A CN111381120A CN201811641629.9A CN201811641629A CN111381120A CN 111381120 A CN111381120 A CN 111381120A CN 201811641629 A CN201811641629 A CN 201811641629A CN 111381120 A CN111381120 A CN 111381120A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention relates to the field of electric automobiles, in particular to a photoelectric induction detection method and a circuit applied to high-voltage parts.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a photoelectric induction detection method and circuit applied to high-voltage parts.
Background
With the continuous development of electric automobiles, the safety requirements of the electric automobiles and parts thereof are higher and higher. Electric automobile high pressure spare part generally contains power devices such as power semiconductor, inductance, transformer, electric capacity, copper bar, wire, and when these power devices became invalid, probably have the device to open a way, the short circuit, serious even have accidents such as insulating failure, fire, when these troubles appear, the product should stop work and guarantee not electrified, prevent that personnel from electrocuting or other safety accidents appear.
In order to solve the above problems, the design ideas in the prior art generally include the following two types:
1. adopting over-temperature, over-voltage, over-current protection and other measures, and stopping the product when the above conditions occur;
2. adopt the smoke sensor, before the serious consequences such as the product became a fire after inefficacy, spontaneous combustion, generally can smoke at first, when the smoke sensor detected smog, start the inside extinguishing device of product and put out a fire, perhaps give the product main control chip with the signal, stop product work through main control chip to inform whole car control system with trouble information or directly send alarm signal and inform the navigating mate.
In the scheme 1, although the product can be shut down for protection when the product characteristics are abnormal by the protection measures such as over-temperature, over-voltage and over-current, the aging or the failure of the gradual device cannot be effectively identified. For example, some problems such as wire aging and insulation sheath breakage may be that the wire has been smoking, partially arcing and even firing, but circuits such as over-temperature, over-voltage and over-current cannot necessarily be effectively identified.
Aiming at the scheme 2, the smoke sensing device can timely detect smoke and send a signal to the main control chip in principle to stop the work of the product, but still has the following defects:
1. smoke sensing devices are generally large in size and expensive, electric vehicle products generally pursue high power density, and it is generally difficult to have enough positions to place smoke sensing devices;
2. the smoke sensing device is generally an independent module, actions after the smoke sensing device detects smoke are generally indicated by a buzzer in an alarm mode, but for high-voltage parts of the electric automobile, more importantly, the smoke sensing device stops working in time after a fault is identified, the high voltage is cut off, and the fault is prevented from further expanding.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method and a circuit for detecting high-safety photoelectric sensing applied to high-voltage components.
The purpose of the invention is realized by the following technical scheme:
according to an aspect of the present invention, there is provided a method for detecting a high voltage component by photoelectric sensing, comprising the steps of:
s10, arranging a reference light source at the high-voltage part, receiving a light source signal of the reference light source, and converting the light source signal into an electric signal;
and S20, detecting the electric signal to judge whether the light source signal of the reference light source changes and generate a detection signal, and confirming whether the high-voltage part is abnormal according to the detection signal.
Further, the method comprises, after step S20, the steps of:
s25: and sending an instruction to stop the high-voltage parts.
Further, the method further comprises, between steps S10 and S20, the steps of:
s15: the electrical signal is pre-processed.
Further, step S15 includes:
and carrying out current limiting and voltage dividing processing and filtering processing on the electric signals.
According to another aspect of the present invention, there is provided a photoelectric sensing detection circuit applied to a high voltage component, including: the photoelectric sensor U1 and a main control chip; wherein:
the photoelectric sensor U1 is used for receiving a light source signal of the reference light source and converting the light source signal into an electric signal;
the main control chip is used for detecting the electric signals, judging whether the light source signals of the reference light source change or not, generating detection signals and confirming whether the high-voltage parts are abnormal or not according to the detection signals.
Further, the photoelectric sensing detection circuit further comprises: the output signal voltage division circuit, the output signal filter circuit and the RC filter circuit are sequentially connected between the photoelectric sensor U1 and the main control chip, and the reference light source circuit is connected between the photoelectric sensor U1 and the main control chip.
Further, the output signal voltage dividing circuit includes resistors R1 and R3, the output signal filter circuit includes a capacitor C2, the RC filter circuit includes a resistor R2 and a capacitor C3, and the reference light source circuit includes a light emitting diode LED1 and a resistor R4, wherein:
the Vdd end of the photoelectric sensor U1 is connected with VCC and the resistor R4, the Vss end is grounded, and the OUT end is connected with the resistor R1; the other end of the resistor R1 is connected with a resistor R3, a capacitor C2 and a resistor R2, the other end of the resistor R2 is connected with a capacitor C3 and a main control chip, and the other ends of the resistor R3, the capacitor C2 and the capacitor C3 are grounded and then connected with the main control chip; the light emitting diode LED1 is connected between the resistor R4 and the photo sensor U1 and is switched by the photo sensor U1 to provide a reference light source.
Further, the photoelectric sensing detection circuit also comprises a chip input filter circuit which is connected between VCC and a grounding end and is connected with the photoelectric sensor U1 in parallel.
Further, the chip input filter circuit includes a capacitor C1.
Further, the photosensor U1 is an MLX75305 chip.
The photoelectric sensing detection method and the circuit applied to the high-voltage part convert the received light source signal of the reference light source into the electric signal, detect the electric signal to judge whether the light source signal of the reference light source changes and generate the detection signal, confirm whether the high-voltage part is abnormal according to the detection signal, have high detection reliability, can accurately detect the fault phenomena of smoke, arc discharge or ignition and the like, have simple circuit principle, few devices and low cost, and have small volume compared with a mechanical device, thereby being convenient for the circuit arrangement in the product.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of the present invention applied to a photoelectric sensing detection method for high-voltage components;
FIG. 2 is a preferred flow chart of the present invention applied to a photoelectric sensing detection method for high-voltage components;
FIG. 3 is a circuit diagram of a photoelectric sensing detection circuit applied to a high-voltage component according to the present invention;
fig. 4 is a specific circuit diagram of the photoelectric sensing detection circuit applied to the high-voltage component according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
According to an embodiment of the present invention, there is provided a method for detecting a high-voltage component by photoelectric sensing, where the high-voltage component is a high-voltage component on an electric vehicle, and may also be a high-voltage component on any other product, and referring to fig. 1, the method includes the following steps:
s10, arranging a reference light source at the high-voltage part, receiving a light source signal of the reference light source, and converting the light source signal into an electric signal; the analog signal is converted into a digital signal, so that subsequent signal processing is facilitated;
s20, detecting the electric signal to judge whether the light source signal of the reference light source changes and generate a detection signal, and confirming whether the high-voltage part is abnormal according to the detection signal; the level of the detection signal corresponds to the intensity of the input light source signal, and the detection signal is generated by the change of the intensity of the light source signal.
The photoelectric sensing detection method applied to the high-voltage part converts the received light source signal of the reference light source into an electric signal, detects the electric signal to judge whether the light source signal of the reference light source changes or not and generate a detection signal, confirms whether the high-voltage part is abnormal or not according to the detection signal, has high detection reliability, and can accurately detect the fault phenomena of smoke, arc discharge or ignition and the like.
In a preferred embodiment, referring to fig. 2, the method further includes, after step S20, the steps of:
s25: and sending an instruction to stop the high-voltage parts to work, disconnecting the high voltage, completing the function of detecting the abnormity of the high-voltage parts, and avoiding the interior of the product from continuing high-voltage electrification.
In a preferred embodiment, referring to fig. 2, the method further includes, between steps S10 and S20, the steps of:
s15: the electrical signal is pre-processed to obtain a more accurate electrical signal.
In a preferred embodiment, step S15 includes:
and carrying out current-limiting voltage-dividing processing and filtering processing on the electric signals, wherein the current-limiting voltage-dividing processing is carried out on the electric signals to prevent overvoltage, and the filtering processing is carried out on the electric signals to filter out useless signals and noise interference.
Example 2
According to another aspect of the present invention, there is provided a photoelectric sensing detection circuit applied to a high-voltage component, where the high-voltage component is a high-voltage component of an electric vehicle, and may also be a high-voltage component of any other product, the photoelectric sensing detection circuit including: the photoelectric sensor U1 and a main control chip; wherein:
the photoelectric sensor U1 is used for receiving a light source signal of the reference light source and converting the light source signal into an electric signal; the analog signal is converted into a digital signal, so that subsequent signal processing is facilitated;
the main control chip is used for detecting the electric signal, judging whether a light source signal of the reference light source changes or not, generating a detection signal and confirming whether the high-voltage part is abnormal or not according to the detection signal; the level of the detection signal corresponds to the intensity of the input light source signal, and the detection signal is generated by the change of the intensity of the light source signal.
The photoelectric sensing detection circuit applied to the high-voltage part converts the received light source signal of the reference light source into an electric signal, detects the electric signal to judge whether the light source signal of the reference light source changes and generates a detection signal, confirms whether the high-voltage part is abnormal according to the detection signal, has high detection reliability, can accurately detect the fault phenomena of smoke, arc discharge or ignition and the like, has simple circuit principle, few devices and low cost, and is convenient for the internal circuit arrangement of a product compared with a mechanical device.
In a preferred embodiment, the photoelectric sensing circuit further includes: the output signal voltage division circuit, the output signal filter circuit and the RC filter circuit are sequentially connected between the photoelectric sensor U1 and the main control chip, and the reference light source circuit is connected between the photoelectric sensor U1 and the main control chip; the output signal voltage division circuit carries out current limiting and voltage dividing processing on the electric signals to prevent overvoltage, the output signal filter circuit and the RC filter circuit carry out filtering processing on the electric signals to filter out useless signals and noise interference, and the reference light source circuit is provided with a reference light source by the photoelectric sensor U1 and is controlled to be switched on and switched off.
In a preferred embodiment, the output signal voltage divider circuit includes resistors R1 and R3, the output signal filter circuit includes a capacitor C2, the RC filter circuit includes a resistor R2 and a capacitor C3, and the reference light source circuit includes a light emitting diode LED1 and a resistor R4, where:
the Vdd end of the photoelectric sensor U1 is connected with VCC and the resistor R4, the Vss end is grounded, and the OUT end is connected with the resistor R1; the other end of the resistor R1 is connected with a resistor R3, a capacitor C2 and a resistor R2, the other end of the resistor R2 is connected with a capacitor C3 and a main control chip, the other ends of the resistor R3, the capacitor C2 and the capacitor C3 are grounded and then connected with the main control chip, and the light emitting diode LED1 is connected between the resistor R4 and the photoelectric sensor U1 and is provided with a reference light source through the photoelectric sensor U1 to carry out switching control.
In a preferred technical solution, the photo sensor detection circuit further includes a chip input filter circuit connected between VCC and a ground terminal and connected in parallel with the photo sensor U1, and filters unwanted signals and noise interference from the light source signal input to the photo sensor U1.
In a preferred embodiment, the chip input filter circuit includes a capacitor C1.
The present invention will be described in detail with reference to specific examples.
Referring to fig. 3, core components of the circuit are a photoelectric sensor U1, a C1 is a chip input filter capacitor of the photoelectric sensor U1, R1 and R3 are output signal voltage dividing resistors of the photoelectric sensor U1, a C2 is an output signal filter capacitor, the R2 and the C3 form an RC filter circuit, and the R4 and the LED1 form a diagnostic circuit. The working principle and the process are as follows:
u1 is a photoelectric sensor, which is used for converting the received light source signal into an electric signal, then transmitting the electric signal to the main control chip through each filter circuit, and detecting the intensity of the input illumination signal corresponding to the height of the signal;
the LED1 is a light emitting diode and is arranged close to the photoelectric sensor U1, and an LED-control signal controls the on-off of the LED1 to provide a reference light source for the photoelectric sensor U1;
when smoke is abnormal in the product, the existence of the smoke influences the photoelectric sensor U1 to collect the intensity of the LED1 light source, so that the light source signal is weakened, the photoelectric sensor U1 outputs a corresponding sampling signal after detecting the change of the light source signal, the sampling signal is filtered by the output signal filter capacitor and the RC filter circuit and then transmitted to the main control chip, the main control chip generates a detection signal after detecting the sampling signal, and sends an instruction to stop the product to work, so that the interior of the product is prevented from being continuously electrified under high voltage;
when the product appears drawing the arc inside, when catching fire etc. unusually, the existence of arc light, flame leads to the light source signal of photoelectric sensing ware U1 department input to become strong, photoelectric sensing ware U1 detects the light source signal and changes the back, the sampling signal that the output corresponds, through output signal filter capacitor, RC filter circuit with sampling signal transmission after-filtering to main control chip, main control chip generates the detected signal after detecting the sampling signal, send the instruction and stop product work, avoid the inside continuation high-voltage electricity of product.
Specifically referring to fig. 4, the photo-sensor U1 uses an MELEXIS brand MLX75305 chip (which may also be another brand or another type of photo-sensing device having this function), an input filter capacitor C1 of the chip is 1uF, an output signal divider resistor R1 is 1K, R3 — 10K, an output signal filter capacitor C2 is 10nF, an RC filter resistor R2 is 1K, C3 — 10nF, and a current limiting resistor R4 of the LED1 is 2K.
Let k be the conversion ratio between the input light source signal F and the output signal Uout of the photo-sensor U1, i.e., Uout ═ k × F, and k ═ F _ R1/(R1+ R3) is the detection signal U-sample ═ Uout — R1/(R1+ R3).
When the smoke is abnormal in the product, the light source is shielded by the smoke, the light source signal F received by the photoelectric sensing detection circuit is weakened, the detection signal U-sample is weakened through a formula, the main control chip senses that the smoke exists in the product after detecting the detection signal, the product is controlled to stop working, the high voltage is cut off, and the smoke detection function is completed.
When open fire such as arc discharge, ignition and the like occurs in the product, the light source is strengthened by the open fire, the light source signal F received by the photoelectric sensing detection circuit is strengthened, the detection signal (U-sample) can be known to be strengthened through a formula, the main control chip senses that the open fire such as arc discharge, ignition and the like is abnormal in the product after detecting the detection signal, the product is controlled to stop working, high voltage is cut off, and the open fire abnormal detection functions such as arc discharge, ignition and the like are completed.
Compared with the prior art, the technical scheme of the invention has the difference that a photoelectric detection scheme is adopted, and whether the abnormity such as smoke, arc discharge and even fire occurs is confirmed through the detected light source intensity. The invention has the beneficial effects that:
1. the circuit principle is simple, the number of devices is small, and the cost is low;
2. compared with a smoke sensing device, the circuit is small in size and convenient for circuit arrangement inside a product;
3. the detection reliability is high, and the fault phenomena such as smoke, arc discharge or fire can be accurately detected;
4. the detection safety is high, the circuit arrangement is hidden and not easy to find, and a non-designer is generally difficult to crack after the detection signal is combined with a software strategy.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A photoelectric sensing detection method applied to high-voltage parts is characterized by comprising the following steps:
s10, arranging a reference light source at the high-voltage part, receiving a light source signal of the reference light source, and converting the light source signal into an electric signal;
and S20, detecting the electric signal, judging whether the light source signal of the reference light source changes, generating a detection signal, and confirming whether the high-voltage part is abnormal according to the detection signal.
2. The method according to claim 1, wherein the method further comprises, after step S20, the steps of:
s25: and sending an instruction to stop the high-voltage parts.
3. The method according to claim 1, further comprising, between steps S10 and S20, the steps of:
s15: and preprocessing the electric signal.
4. The method according to claim 3, wherein the step S15 includes:
and carrying out current limiting and voltage dividing processing and filtering processing on the electric signals.
5. A photoelectric sensing detection circuit applied to high-voltage parts is characterized by comprising: the photoelectric sensor U1 and a main control chip; wherein:
the photoelectric sensor U1 is used for receiving a light source signal of the reference light source and converting the light source signal into an electric signal;
the main control chip is used for detecting the electric signal, judging whether a light source signal of the reference light source changes or not, generating a detection signal, and confirming whether the high-voltage part is abnormal or not according to the detection signal.
6. The circuit of claim 5, wherein the photo-sensing detection circuit further comprises: the photoelectric sensor comprises an output signal voltage division circuit, an output signal filter circuit and an RC filter circuit which are sequentially connected between the photoelectric sensor U1 and a main control chip, and a reference light source circuit connected between the photoelectric sensor U1 and the main control chip.
7. The circuit of claim 6, wherein the output signal voltage divider circuit comprises resistors R1 and R3, the output signal filter circuit comprises a capacitor C2, the RC filter circuit comprises a resistor R2 and a capacitor C3, the reference light source circuit comprises a light emitting diode LED1 and a resistor R4, wherein:
the Vdd end of the photoelectric sensor U1 is connected with VCC and the resistor R4, the Vss end is grounded, and the OUT end is connected with the resistor R1; the other end of the resistor R1 is connected with a resistor R3, a capacitor C2 and a resistor R2, the other end of the resistor R2 is connected with a capacitor C3 and a main control chip, and the other ends of the resistor R3, the capacitor C2 and the capacitor C3 are grounded and then connected with the main control chip; the light emitting diode LED1 is connected between the resistor R4 and the photo sensor U1 and is switched by the photo sensor U1 to provide a reference light source.
8. The circuit of claim 7, wherein the photo-sensing detection circuit further comprises a chip input filter circuit connected between VCC and ground in parallel with the photo-sensor U1.
9. The circuit of claim 8, wherein the chip input filter circuit comprises a capacitor C1.
10. The circuit of claim 5, wherein the photo-sensor U1 is an MLX75305 chip.
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Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1168589A (en) * | 1997-08-26 | 1999-03-09 | Kokusai Electric Co Ltd | Abnormal high-voltage detection circuit of sort wave large power transmitter |
| CN1588465A (en) * | 2004-09-18 | 2005-03-02 | 清华大学深圳研究生院 | Interference photoelectric smoke and fire detecting method and its device |
| US20090021729A1 (en) * | 2005-03-31 | 2009-01-22 | Fenwal Controls Of Japan, Ltd. | Photoelectric Smoke Detector |
| CN201611775U (en) * | 2010-01-29 | 2010-10-20 | 保定天威恒通电气有限公司 | Arc light monitoring and protecting device for bus compartment |
| CN201828634U (en) * | 2010-08-25 | 2011-05-11 | 重庆大学 | Electric arc detection device of high-voltage cabinet |
| JP2014035268A (en) * | 2012-08-09 | 2014-02-24 | Nippon Hoso Kyokai <Nhk> | Antenna characteristic measurement system using photoelectric field sensor, and antenna characteristic measurement method using photoelectric field sensor |
| CN103712686A (en) * | 2013-12-31 | 2014-04-09 | 天津工业大学 | Light intensity detecting device |
| CN203772411U (en) * | 2013-12-31 | 2014-08-13 | 天津工业大学 | Light intensity detection device |
| CN104251945A (en) * | 2013-06-28 | 2014-12-31 | 上海电科电器科技有限公司 | Arc fault detecting device |
| CN204117334U (en) * | 2014-11-01 | 2015-01-21 | 易礼智 | One has a power failure warning circuit |
| CN204144916U (en) * | 2014-09-26 | 2015-02-04 | 哈尔滨威帝电子股份有限公司 | A kind of short-circuit protection circuit for intelligent vehicle-carried power device |
| CN105093076A (en) * | 2015-08-04 | 2015-11-25 | 国网山东省电力公司潍坊供电公司 | Online abnormity monitor of high tension switchgear |
| CN105180996A (en) * | 2015-08-04 | 2015-12-23 | 宁波摩米创新工场电子科技有限公司 | Digitization photoelectrical detection system |
| CN105785168A (en) * | 2016-03-03 | 2016-07-20 | 深圳市共进电子股份有限公司 | Detection circuit and automatic detection device |
| CN106199458A (en) * | 2016-06-22 | 2016-12-07 | 宁波三星医疗电气股份有限公司 | A kind of power sense circuit |
| CN205945755U (en) * | 2016-07-27 | 2017-02-08 | 佛山市顺德区美的电热电器制造有限公司 | Supersound communication decoding circuit and electromagnetic heating equipment |
| CN107515359A (en) * | 2016-06-16 | 2017-12-26 | 冯波 | A kind of high-tension electricity equipment discharge signal acquisition system |
| CN206945132U (en) * | 2017-07-27 | 2018-01-30 | 合肥科菲电气技术有限公司 | A kind of intelligent arc photosensor |
| CN107884690A (en) * | 2017-11-14 | 2018-04-06 | 南京工程学院 | GIS switch partial discharge on-line monitoring systems and method based on low-light level sensor |
| CN108295409A (en) * | 2018-01-31 | 2018-07-20 | 福建南安吉消消防器材有限公司 | A kind of preact alarm valve block structure |
| CN208128576U (en) * | 2018-01-17 | 2018-11-20 | 惠州市创舰实业有限公司 | A kind of LED is without stroboscopic dimming driving circuit |
-
2018
- 2018-12-29 CN CN201811641629.9A patent/CN111381120B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1168589A (en) * | 1997-08-26 | 1999-03-09 | Kokusai Electric Co Ltd | Abnormal high-voltage detection circuit of sort wave large power transmitter |
| CN1588465A (en) * | 2004-09-18 | 2005-03-02 | 清华大学深圳研究生院 | Interference photoelectric smoke and fire detecting method and its device |
| US20090021729A1 (en) * | 2005-03-31 | 2009-01-22 | Fenwal Controls Of Japan, Ltd. | Photoelectric Smoke Detector |
| CN201611775U (en) * | 2010-01-29 | 2010-10-20 | 保定天威恒通电气有限公司 | Arc light monitoring and protecting device for bus compartment |
| CN201828634U (en) * | 2010-08-25 | 2011-05-11 | 重庆大学 | Electric arc detection device of high-voltage cabinet |
| JP2014035268A (en) * | 2012-08-09 | 2014-02-24 | Nippon Hoso Kyokai <Nhk> | Antenna characteristic measurement system using photoelectric field sensor, and antenna characteristic measurement method using photoelectric field sensor |
| CN104251945A (en) * | 2013-06-28 | 2014-12-31 | 上海电科电器科技有限公司 | Arc fault detecting device |
| CN103712686A (en) * | 2013-12-31 | 2014-04-09 | 天津工业大学 | Light intensity detecting device |
| CN203772411U (en) * | 2013-12-31 | 2014-08-13 | 天津工业大学 | Light intensity detection device |
| CN204144916U (en) * | 2014-09-26 | 2015-02-04 | 哈尔滨威帝电子股份有限公司 | A kind of short-circuit protection circuit for intelligent vehicle-carried power device |
| CN204117334U (en) * | 2014-11-01 | 2015-01-21 | 易礼智 | One has a power failure warning circuit |
| CN105093076A (en) * | 2015-08-04 | 2015-11-25 | 国网山东省电力公司潍坊供电公司 | Online abnormity monitor of high tension switchgear |
| CN105180996A (en) * | 2015-08-04 | 2015-12-23 | 宁波摩米创新工场电子科技有限公司 | Digitization photoelectrical detection system |
| CN105785168A (en) * | 2016-03-03 | 2016-07-20 | 深圳市共进电子股份有限公司 | Detection circuit and automatic detection device |
| CN107515359A (en) * | 2016-06-16 | 2017-12-26 | 冯波 | A kind of high-tension electricity equipment discharge signal acquisition system |
| CN106199458A (en) * | 2016-06-22 | 2016-12-07 | 宁波三星医疗电气股份有限公司 | A kind of power sense circuit |
| CN205945755U (en) * | 2016-07-27 | 2017-02-08 | 佛山市顺德区美的电热电器制造有限公司 | Supersound communication decoding circuit and electromagnetic heating equipment |
| CN206945132U (en) * | 2017-07-27 | 2018-01-30 | 合肥科菲电气技术有限公司 | A kind of intelligent arc photosensor |
| CN107884690A (en) * | 2017-11-14 | 2018-04-06 | 南京工程学院 | GIS switch partial discharge on-line monitoring systems and method based on low-light level sensor |
| CN208128576U (en) * | 2018-01-17 | 2018-11-20 | 惠州市创舰实业有限公司 | A kind of LED is without stroboscopic dimming driving circuit |
| CN108295409A (en) * | 2018-01-31 | 2018-07-20 | 福建南安吉消消防器材有限公司 | A kind of preact alarm valve block structure |
Non-Patent Citations (3)
| Title |
|---|
| LIU BAIFEN 等: "Design Intelligent Multi-sensor Fire Monitoring Based on DSP", <THE EIGHTH INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT AND INSTRUMENTS> * |
| 孙萦杰 等: "光伏系统用直流电弧故障保护方法初探", 《江苏科技信息》 * |
| 石敬炜 等: "《建筑工程消防速成》", 31 December 2013, 哈尔滨工业大学出版社 * |
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