CN109030913A - A kind of current detection means - Google Patents
A kind of current detection means Download PDFInfo
- Publication number
- CN109030913A CN109030913A CN201810981993.3A CN201810981993A CN109030913A CN 109030913 A CN109030913 A CN 109030913A CN 201810981993 A CN201810981993 A CN 201810981993A CN 109030913 A CN109030913 A CN 109030913A
- Authority
- CN
- China
- Prior art keywords
- circuit
- operational amplifier
- amplifier circuit
- power supply
- current detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a kind of current detection means, mainly solving the technical problems that it is low to carry out current measurement bring measurement accuracy using Hall current sensor in the prior art, temperature drift is big, the problem that anti-interference difference and measurement accuracy are influenced by installation site, the present invention passes through a kind of current detection means, including the detecting element being connected serially in circuit, the detecting element connects isolation amplifier circuit, the high voltage analog signal generated on the detecting element is converted into low-voltage analog signal by the isolation amplifier circuit, the isolation amplifier circuit is connect with operational amplifier circuit, operation is carried out to low-voltage analog signal by the operational amplifier circuit, the operational amplifier circuit is connected to signal output end, the technical solution for the analog signal that the operational amplifier circuit calculates is obtained from the signal output end, preferably solves the problems, such as this, it can be used for electric current Detection.
Description
Technical field
The present invention relates to a kind of current detection means.
Background technique
Current electric system, electric car, electric machine controller, in terms of, common current testing device
It is based on Hall current sensor.Working principle: there are magnetic fields inside energization solenoid, and size is with the electric current in conducting wire at just
Than, therefore can use Hall sensor and measure magnetic field, so that it is determined that in conducting wire electric current size；
At present main product there are the problem of: 1, Hall current sensor precision is low, precision universal 1% or 5%；2, warm
Drift is big, is affected by temperature larger, and measurement error caused by temperature change can be bigger；3, anti-interference is poor, and working principle is induction
Magnetic field, magnetic field is ubiquitous in actual environment, by influenced can be bigger in more complex electromagnetic environment, 4, precision produced
Product installation site influences greatly, and copper bar is completely just most accurate by center, but in practical application, and copper bar passes through center hardly possible
Spend larger, therefore detection accuracy will receive influence.
Summary of the invention
The technical problem to be solved by the present invention is to use Hall current sensor to carry out current measurement in the prior art to bring
Measurement accuracy is low, temperature drift is big, anti-interference is poor and measurement accuracy is influenced by installation site problem, propose a kind of new
Current detection means, which has that measurement accuracy is high, temperature drift is small, strong interference immunity, measurement accuracy are not pacified
Holding position influences and feature stable and reliable for performance.
In order to solve the above-mentioned technical problem, The technical solution adopted by the invention is as follows: a kind of current detection means, including string
The detecting element being coupled in circuit, the detecting element connect isolation amplifier circuit, will be described by the isolation amplifier circuit
The high voltage analog signal generated on detecting element is converted into low-voltage analog signal, and the isolation amplifier circuit and operational amplifier circuit connect
It connects, operation is carried out to low-voltage analog signal by the operational amplifier circuit, the operational amplifier circuit is connected to signal output end, from described
Signal output end obtains the analog signal that the operational amplifier circuit calculates.
Further, it is preferable that the isolation amplifier circuit and isolated power supply circuit connection, the isolated power supply circuit connect
Power supply is connect, provides low pressure reference point and high voltage reference point to the isolation amplifier circuit by the isolated power supply circuit.
It is highly preferred that being equipped with the auxiliary power circuit for preventing reversal connection between the isolated power supply circuit and the power supply.
Turn it is highly preferred that being connected between the isolated power supply circuit and the power supply and between the operational amplifier circuit
Circuit is changed, provides negative voltage for the operational amplifier circuit by the conversion circuit.
It is highly preferred that the isolated power supply circuit and the NTC temperature acquisition for providing temperature-compensating for the detecting element are electric
Road connection, is equipped between the isolated power supply circuit and the NTC temperature collection circuit and provides for the NTC temperature collection circuit
The reference voltage-stabilizing circuit of burning voltage.
Preferably, the isolation amplifier circuit includes coupler, the input terminal of the coupler and the detecting element two
End connects and connects with the high voltage reference point, and the output end of the coupler is connect with the input terminal of the operational amplifier circuit,
The output end of the coupler is connect with the low pressure reference point.
It is highly preferred that the operational amplifier circuit includes operational amplifier one, the positive and negative anodes input terminal of the operational amplifier one
It is connect with the output end of the isolation amplifier circuit, the cathode of the output end connection operational amplifier two of the operational amplifier one
The output end of input terminal, the operational amplifier two is connect with the signal output end, the operational amplifier one simultaneously with institute
State the output end connection of conversion circuit.
It is highly preferred that the isolated power supply circuit includes transformer, the transformer primary side passes through power supply driver and institute
The connection of low pressure reference point is stated, the breadths of the transformer is connect with the high voltage reference point.
It is highly preferred that the conversion circuit includes electric pressure converter, the output end of the electric pressure converter obtains negative voltage
And it is connect with the operational amplifier circuit.
It is highly preferred that the NTC temperature collection circuit carries out temperature-compensating, institute to the detecting element by thermistor
It states reference voltage-stabilizing circuit and provides burning voltage by source of stable pressure for the NTC temperature collection circuit.
The beneficial effects of the present invention are: the present invention uses high-accuracy detecting element, and detection current precision is high；Using ohm
Law principle, strong antijamming capability, and it is reliable and stable；Easy to use, cheap, cost performance is high；Current divider is acquired using NTC
Temperature can compensate because of test value variation caused by temperature change, improve testing precision；It can seamless interfacing replacement Hall biography
Sensor, operating voltage, output analog voltage match with Hall sensor, convenient substituting Hall sensor.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of current detection means of the present invention；
Fig. 2 is the connection schematic diagram of detecting element in Fig. 1, isolation amplifier circuit and operational amplifier circuit；
Fig. 3 is the connection schematic diagram that power circuit is isolated in Fig. 1；
Fig. 4 is the connection schematic diagram of auxiliary power circuit and conversion circuit in Fig. 1；
Fig. 5 is the connection schematic diagram of reference voltage-stabilizing circuit in Fig. 1；
Fig. 6 is the structural schematic diagram of NTC temperature collection circuit in Fig. 1.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, present embodiment discloses a kind of current detection means, including the detecting element being connected serially in circuit
100, the detecting element 100 connects isolation amplifier circuit 200, by the isolation amplifier circuit 200 by the detecting element
The high voltage analog signal generated on 100 is converted into low-voltage analog signal, and the isolation amplifier circuit 200 connects with operational amplifier circuit 300
It connects, operation is carried out to low-voltage analog signal by the operational amplifier circuit 300, the operational amplifier circuit 300 is connected to signal output end
OUT obtains the analog signal that the operational amplifier circuit 300 calculates from the signal output end OUT, and the analog signal finally obtained is again
The electric current of element 100 after testing is calculated to obtain the electric current of circuit-under-test by Ohm's law；
The isolation amplifier circuit 200 is connect with isolated power supply circuit 400, and the isolated power supply circuit 400 connects power supply
500, the power supply 500 is mentioned by the isolated power supply circuit 400 to the isolation amplifier circuit 200 using the alternating current of 5V
For low pressure reference point GND and high voltage reference point GND_SIGNAL, set between the isolated power supply circuit 400 and the power supply 500
Have prevent reversal connection auxiliary power circuit 600, between the isolated power supply circuit 400 and the power supply 500 and with the fortune
Electric discharge is connected with conversion circuit 700 between road 300, and what it is due to detection is alternating current, to be institute by the conversion circuit 700
It states operational amplifier circuit 300 and provides negative voltage for amplifier detection, the isolated power supply circuit 400 is mentioned with for the detecting element 100
For temperature-compensating NTC temperature collection circuit 800 connect, by the detecting element 100 carry out real-time temperature compensation to
Guarantee the precision that detecting element 100 detects, is equipped between the isolated power supply circuit 400 and the NTC temperature collection circuit 800
The reference voltage-stabilizing circuit 900 of burning voltage is provided for the NTC temperature collection circuit 800 to guarantee the NTC temperature acquisition
The accuracy of circuit 800；
As shown in Fig. 2, the detecting element 100 is sampling resistor R20, the resistance value of sampling resistor R20 selects 100 Ω, temperature
Degree coefficient is ± 20 (ppm/ DEG C), and running temperature is -65 DEG C to+170 DEG C；
As shown in Fig. 2, the isolation amplifier circuit 200 includes coupler 201, the model ACPL- that coupler 201 is selected
799T, the input terminal of the coupler 201 connect with 100 both ends of detecting element and with the high voltage reference point GND_
SIGNAL connection, the output end of the coupler 201 are connect with the input terminal of the operational amplifier circuit 300, the coupler 201
Output end is connect with the low pressure reference point GND；
As shown in Fig. 2, the operational amplifier circuit 300 includes operational amplifier 1, the operational amplifier 1 is just
Negative input is connect with the output end of the isolation amplifier circuit 200, the positive and negative anodes input terminal of the operational amplifier 1
It is connect with the output end of the coupler 201, the output end connection operational amplifier 2 302 of the operational amplifier 1
Negative input, the output end of the operational amplifier 2 302 are connect with the signal output end OUT, the operational amplifier
The one 301 and model TL082 that selects of the operational amplifier 2 302, the operational amplifier 1 simultaneously with described turn
Change the output end connection of circuit 700；
As shown in figure 3, the isolated power supply circuit 400 includes transformer 401, the model of the transformer 401 is selected
DA2303,401 primary side of transformer are connect by power supply driver 402 with the low pressure reference point GND, the transformer
401 model selects SN6501, and the breadths of the transformer 401 is connect with the high voltage reference point GND_SIGNAL, the change
The breadths of depressor 401 is connected with the full bridge rectifier being made of diode D2 and diode D3, is obtained by full bridge rectifier
To+5V the voltage being connect with the high voltage reference point GND_SIGNAL；
As shown in figure 4, the auxiliary power circuit 600 includes that the transient state in parallel with 500 both ends of power supply inhibits two poles
Pipe 601, the output end of the power supply 500 is connect with the conversion circuit 700 and the isolated power supply circuit 400 respectively, described
The output end of power supply 500 is also in series with rectifier diode D1；
As shown in figure 4, the conversion circuit 700 includes electric pressure converter 701, the type that the electric pressure converter 701 is selected
It number is TC7660EOA, the output end of the electric pressure converter 701 obtains negative voltage -5V and connect with the operational amplifier circuit 300,
The input terminal of the electric pressure converter 701 is positive voltage 5V and to connect with the operational amplifier circuit 300, and ± 5V is and operational amplifier
One 301 connections；
As shown in figure 5, the reference voltage-stabilizing circuit 900 is that the NTC temperature collection circuit 800 provides by source of stable pressure Z1
Burning voltage, it is TL431 that the model of source of stable pressure Z1, which is selected, and it is NTC temperature by stable voltage that stable voltage value, which is+3.3V,
Degree Acquisition Circuit 800 is accurately powered；
As shown in fig. 6, the NTC temperature collection circuit 800 carries out the detecting element 100 by thermistor RT1
Temperature-compensating, thermistor RT1 connection output terminals A, output terminals A are connect with detecting element, and the thermistor RT1 selects NTC
Thermistor.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of current detection means, which is characterized in that including the detecting element being connected serially in circuit, the detecting element connection
The high voltage analog signal generated on the detecting element is converted into low pressure by the isolation amplifier circuit by isolation amplifier circuit
Analog signal, the isolation amplifier circuit connect with operational amplifier circuit, are transported by the operational amplifier circuit to low-voltage analog signal
It calculates, the operational amplifier circuit is connected to signal output end, obtains the simulation letter that the operational amplifier circuit calculates from the signal output end
Number.
2. a kind of current detection means as described in claim 1, which is characterized in that the isolation amplifier circuit and isolated power supply
Circuit connection, the isolated power supply circuit connection power supply are provided by the isolated power supply circuit to the isolation amplifier circuit
Low pressure reference point and high voltage reference point.
3. a kind of current detection means as claimed in claim 2, which is characterized in that the isolated power supply circuit and the power supply
Between be equipped with prevent reversal connection auxiliary power circuit.
4. a kind of current detection means as claimed in claim 2, which is characterized in that the isolated power supply circuit and the power supply
Between and between the operational amplifier circuit be connected with conversion circuit, provided by the conversion circuit for the operational amplifier circuit negative
Voltage.
5. a kind of current detection means as claimed in claim 2, which is characterized in that the isolated power supply circuit be the inspection
It surveys element and the NTC temperature collection circuit connection of temperature-compensating, the isolated power supply circuit and the NTC temperature collection circuit is provided
Between be equipped with and for the NTC temperature collection circuit provide the reference voltage-stabilizing circuit of burning voltage.
6. a kind of current detection means as described in claim 1, which is characterized in that the isolation amplifier circuit includes coupling
Device, the input terminal of the coupler connect with the detecting element both ends and connect with the high voltage reference point, the coupling
The output end of device is connect with the input terminal of the operational amplifier circuit, and the output end of the coupler is connect with the low pressure reference point.
7. a kind of current detection means as claimed in claim 4, which is characterized in that the operational amplifier circuit includes operational amplifier
One, the positive and negative anodes input terminal of the operational amplifier one is connect with the output end of the isolation amplifier circuit, the operation amplifier
The negative input of the output end connection operational amplifier two of device one, the output end and the signal of the operational amplifier two are defeated
Outlet connection, the operational amplifier one are connect with the output end of the conversion circuit simultaneously.
8. a kind of current detection means as claimed in claim 2, which is characterized in that the isolated power supply circuit includes transformation
Device, the transformer primary side are connect by power supply driver with the low pressure reference point, the breadths of the transformer and the height
Press reference point connection.
9. a kind of current detection means as claimed in claim 4, which is characterized in that the conversion circuit includes voltage conversion
Device, the output end of the electric pressure converter obtain negative voltage and connect with the operational amplifier circuit.
10. a kind of current detection means as claimed in claim 5, which is characterized in that the NTC temperature collection circuit passes through heat
Quick resistance carries out temperature-compensating to the detecting element, and the reference voltage-stabilizing circuit is the NTC temperature acquisition by source of stable pressure
Circuit with stable voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981993.3A CN109030913A (en) | 2018-08-27 | 2018-08-27 | A kind of current detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981993.3A CN109030913A (en) | 2018-08-27 | 2018-08-27 | A kind of current detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109030913A true CN109030913A (en) | 2018-12-18 |
Family
ID=64625344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810981993.3A Pending CN109030913A (en) | 2018-08-27 | 2018-08-27 | A kind of current detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109030913A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633255A (en) * | 2019-01-25 | 2019-04-16 | 常州索维尔电子科技有限公司 | Current measuring device and current measuring method based on current divider |
| CN110672917A (en) * | 2019-11-19 | 2020-01-10 | 宁波中车时代传感技术有限公司 | Small-size voltage sensor circuit |
| CN111398658A (en) * | 2020-04-03 | 2020-07-10 | 北京京源恒泰云科技有限公司 | Isolated current sensor |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776707A (en) * | 2009-01-13 | 2010-07-14 | 鸿富锦精密工业（深圳）有限公司 | Current detection device |
| CN201548609U (en) * | 2009-12-01 | 2010-08-11 | 湖南继善高科技有限公司 | Current signal precision sampling module of transmitter for electrical exploration |
| CN201551199U (en) * | 2009-10-30 | 2010-08-18 | 刘峰 | Oil temperature measuring spoon |
| CN201955428U (en) * | 2011-01-27 | 2011-08-31 | 李恺 | Intelligent indoor mains electricity line fault diagnosis instrument |
| CN202190105U (en) * | 2011-08-24 | 2012-04-11 | 广东天波信息技术股份有限公司 | Storage battery charging management circuit |
| CN202268849U (en) * | 2011-09-16 | 2012-06-06 | 天水七四九电子有限公司 | Isolated amplifier circuit module |
| CN102944737A (en) * | 2012-11-22 | 2013-02-27 | 中国科学院电工研究所 | Intelligent sensor for measuring high current |
| CN202940578U (en) * | 2012-12-12 | 2013-05-15 | 国电南瑞科技股份有限公司 | Current detection circuit for breaker trip |
| CN203607820U (en) * | 2013-12-06 | 2014-05-21 | 悉雅特万科思自动化(杭州)有限公司 | Over-current and overvoltage protective circuit used for 4-20mA current input circuit |
| CN104898737A (en) * | 2015-04-03 | 2015-09-09 | 上海申腾信息技术有限公司 | Temperature acquisition fault self-diagnosis system |
| CN205102947U (en) * | 2015-11-18 | 2016-03-23 | 山东神戎电子股份有限公司 | Three -way formula platinum resistance PT100 temperature detection circuit |
| CN105487439A (en) * | 2015-11-27 | 2016-04-13 | 湖北三江航天红峰控制有限公司 | Double isolation device and method for multipath AD acquisition |
| CN205377653U (en) * | 2016-01-08 | 2016-07-06 | 南京奥联汽车电子电器股份有限公司 | Switching power supply reduction voltage circuit of low frequency |
-
2018
- 2018-08-27 CN CN201810981993.3A patent/CN109030913A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776707A (en) * | 2009-01-13 | 2010-07-14 | 鸿富锦精密工业（深圳）有限公司 | Current detection device |
| CN201551199U (en) * | 2009-10-30 | 2010-08-18 | 刘峰 | Oil temperature measuring spoon |
| CN201548609U (en) * | 2009-12-01 | 2010-08-11 | 湖南继善高科技有限公司 | Current signal precision sampling module of transmitter for electrical exploration |
| CN201955428U (en) * | 2011-01-27 | 2011-08-31 | 李恺 | Intelligent indoor mains electricity line fault diagnosis instrument |
| CN202190105U (en) * | 2011-08-24 | 2012-04-11 | 广东天波信息技术股份有限公司 | Storage battery charging management circuit |
| CN202268849U (en) * | 2011-09-16 | 2012-06-06 | 天水七四九电子有限公司 | Isolated amplifier circuit module |
| CN102944737A (en) * | 2012-11-22 | 2013-02-27 | 中国科学院电工研究所 | Intelligent sensor for measuring high current |
| CN202940578U (en) * | 2012-12-12 | 2013-05-15 | 国电南瑞科技股份有限公司 | Current detection circuit for breaker trip |
| CN203607820U (en) * | 2013-12-06 | 2014-05-21 | 悉雅特万科思自动化(杭州)有限公司 | Over-current and overvoltage protective circuit used for 4-20mA current input circuit |
| CN104898737A (en) * | 2015-04-03 | 2015-09-09 | 上海申腾信息技术有限公司 | Temperature acquisition fault self-diagnosis system |
| CN205102947U (en) * | 2015-11-18 | 2016-03-23 | 山东神戎电子股份有限公司 | Three -way formula platinum resistance PT100 temperature detection circuit |
| CN105487439A (en) * | 2015-11-27 | 2016-04-13 | 湖北三江航天红峰控制有限公司 | Double isolation device and method for multipath AD acquisition |
| CN205377653U (en) * | 2016-01-08 | 2016-07-06 | 南京奥联汽车电子电器股份有限公司 | Switching power supply reduction voltage circuit of low frequency |
Non-Patent Citations (3)
| Title |
|---|
| WWW.DOC88.COM/P-675124313235.HTML: "用于隔离电源的变压器驱动器", 《道客巴巴》 * |
| 崔万安 等: "《新编电动自行车修理498问》", 31 August 2014 * |
| 无: "ACPL-782T：汽车用小型隔离放大方案", 《电子世界元器件》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633255A (en) * | 2019-01-25 | 2019-04-16 | 常州索维尔电子科技有限公司 | Current measuring device and current measuring method based on current divider |
| CN110672917A (en) * | 2019-11-19 | 2020-01-10 | 宁波中车时代传感技术有限公司 | Small-size voltage sensor circuit |
| CN111398658A (en) * | 2020-04-03 | 2020-07-10 | 北京京源恒泰云科技有限公司 | Isolated current sensor |
| CN111398658B (en) * | 2020-04-03 | 2022-02-11 | 北京京源恒泰云科技有限公司 | Isolated current sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104808070B (en) | A kind of converter valve thyristor level damping circuit parameter test device and method | |
| CN109030913A (en) | A kind of current detection means | |
| CN106679841B (en) | A kind of temperature-detecting device and temperature checking method | |
| CN103245824B (en) | Non-contact D-dot voltage transformer and voltage detection self-correcting method thereof | |
| CN206515387U (en) | Current sensing means and current detecting system | |
| CN203133146U (en) | Transformer neutral point current measuring device | |
| CN204945357U (en) | A kind of electronic mutual inductor steady state error measuring means | |
| CN108761375A (en) | A kind of low-power consumption program control type current mutual inductor field detecting device | |
| CN1114092C (en) | Electromagnetic flow measuring system | |
| CN108732524A (en) | A kind of the automation Calibration Circuit and system of forming and capacity dividing test power supply | |
| US20170102417A1 (en) | Device and method for measuring the power consumption, contactless device and method for measuring power supply status | |
| CN101639524A (en) | Current mutual inductor field detecting device for protection | |
| CN208888303U (en) | A kind of current in wire measuring system | |
| CN102768078B (en) | Automatic resistance compensation method for temperature-measuring conductors for two-wire thermal resistor | |
| CN106556737B (en) | A kind of digital current voltmeter interface circuit based on Hall current sensor | |
| CN202486194U (en) | Current sensor based on Rogowski coil | |
| CN211785914U (en) | MOSFET internal resistance detection circuit | |
| CN204925370U (en) | Single, three -phase direct current return circuit resistance meter calibrating installation | |
| CN209280792U (en) | A kind of novel alternating current gauge outfit | |
| CN210322053U (en) | Temperature detection system | |
| CN210005595U (en) | thermal resistance four-wire system real-time measuring circuit | |
| CN110274704B (en) | Temperature detection system | |
| CN110333384B (en) | Three-phase alternating current voltage high-precision rapid detection circuit based on mutual inductor | |
| CN208013402U (en) | A kind of achievable built-in switch fault detect takes control intelligent electric energy meter | |
| CN206725725U (en) | A kind of detection means of large-size machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |
|
| RJ01 | Rejection of invention patent application after publication |