CN201039213Y - CAN converter - Google Patents
CAN converter Download PDFInfo
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- CN201039213Y CN201039213Y CNU2007200700432U CN200720070043U CN201039213Y CN 201039213 Y CN201039213 Y CN 201039213Y CN U2007200700432 U CNU2007200700432 U CN U2007200700432U CN 200720070043 U CN200720070043 U CN 200720070043U CN 201039213 Y CN201039213 Y CN 201039213Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a CAN converter which is applicable for the braking of the cars and combines the ABS braking and the EBD braking. The converter includes a shell which is internally provided with a controlling loop, a signal transference loop, a voltage adjusting loop, a braking signal loop, a power supply signal loop, an ABS signal loop and an EBD signal loop. The signal transference loop, the voltage adjusting loop, the braking signal loop, the power supply signal loop, the ABS signal loop and the EBD signal loop are respectively connected with the control loop. The outside signals are connected into the control loop through an inserting element I, and the output signals of the signal transference loop, the voltage adjusting loop, the break signal loop, the power supply signal loop, the ABS single loop and the EBD signal loop are output through an inserting element II.
Description
Technical field
The utility model relates to a kind of control transformation device, particularly a kind of CAN transducer of using vehicle anti-lock brake system.
Background technology
All adopted the automobile bus technology in current medium-to-high grade automobile, automobile bus provides the uniform data interchange channel for the electronic equipment of the various complexity of automotive interior, controller, measuring instrument etc.; Some automotive experts think that just as introducing integrated circuit in the seventies in 20th century, introducing microprocessor the eighties, the introducing of data bus technology also will be a milestone of automotive electronic technology development over nearly 10 years.
Since the nineties in 20th century, the number of components by electronic control unit (ECU) commander on the automobile gets more and more, for example electric oil injector, anti-lock brake system, air bag device, automatically controlled door and window device, Active suspension or the like.The extensive use on automobile along with integrated circuit and single-chip microcomputer, the ECU quantity on the car are also more and more.Therefore, the notion of the CAN of controller local area network (Controller Area Network) has also just been arisen at the historic moment on a kind of new notion-car.CAN is to be to solve a kind of data communication protocol that the exchanges data between the ECU is developed in the Hyundai Motor by German BOSCH company the earliest, and according to 150 related standards, the topological structure of CAN is a bus type, therefore is also referred to as the CAN bus.
The data volume of each frame all is no more than 8 bytes in the CAN agreement, realizes the high real-time of data in the mode of lacking the frame pilosity; The error correcting capability of CAN bus is very strong, thereby improves the accuracy of data; The speed of CAN bus can reach 1Mbit/s simultaneously, is a real express network, the CAN bus is applied in to use in the automobile have many good qualities:
1, replaced lead expensive in the vehicle body with twisted-pair cable cheaply, and reduced significantly and used line quantity;
2, have definite response time and high reliability, and suitable application such as brake gear and the air bag that real-time is had relatively high expectations;
3, the CAN chip can high temperature resistance and strong noise, and has lower price.
In the braking procedure of automobile, when four accompanying surface conditions of tire of car differ greatly, car is produced skid, tilt and phenomenon such as rollover by abs braking; Development along with technology, now by using EBD (Electric Brakeforce Distribution, be that electronic braking force distributes) as the servicing unit of ABS function, the major function of EBD is according to four tire situations of living in separately when automobile brake, adjust brake apparatus, allow braking force and tractive effort mate more, thereby reach more effective safety arrestment.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of CAN transducer, is applied in the automobile brake, and ABS and EBD braking are combined together.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of CAN transducer comprises a housing, it is characterized in that its internal circuit comprises: a control loop, a signal transmission loop, a voltage are adjusted loop, a brake signal loop, a power supply signal loop, an ABS signal circuit and an EBD signal circuit; Described signal transmission loop, voltage are adjusted loop, brake signal loop, power supply signal loop, ABS signal circuit and EBD signal circuit and are connected with described control loop respectively, external signal inserts described control loop by connector I, and described signal transmission loop, voltage are adjusted the output signal of loop, brake signal loop, power supply signal loop, ABS signal circuit and EBD signal circuit by connector II output.
CAN transducer of the present utility model has following function:
1) supply voltage is had monitoring capacity:
Overvoltage (greater than+15.5V) and under-voltage (less than+provide warning 7.5V) time.
2) hardware check has measuring ability to the hardware of ABS-system fault lamp, EBD lamp, Brake lamp signal, and can provide warning to fault.
ABS and EBD trouble light should be lighted 2 seconds by ABS ECU control signal when system powered on, when detect the Brake lamp signal+0.5V～+ provide warning during 8V.
3) bus failure and inefficacy there are detectability, and provide warning and corresponding safe handling measure and remedial measure are arranged.
When bus breaks down and lost efficacy, provide alarm signal; After removing, bus failure will recover the CAN communication function automatically again.
4) and mutual monitoring function is arranged between the ABS, spontaneous data there is monitoring function.
Surpass 100ms on the bus and do not receive that the data of ID=2E9 provide alarm signal; When sending mistake, CAN provides alarm signal when detecting.
5) validity to the Brake lamp signal has the judgment processing ability.
When detect the Brake lamp signal+0.5V～+ confirm the invalid of Brake lamp signal during 8V, and provide alarm signal.
6) there is good Electro Magnetic Compatibility in system, and Electro Magnetic Compatibility is pressed GB 18655 standards and carried out.
7) ABS, EBD trouble light lights.
When the CAN transducer detect above-mentioned all light the EBD malfunction indicator lamp need provide the fault of warning the time;
When CAN converter system fault-free the EBD malfunction indicator lamp press the ABS system given state carry out;
The ABS-system fault lamp is pressed the indicated state of ABS system and is carried out;
When system powered on, ABS and EBD trouble light were lighted 2 seconds, afterwards by the 1st, 2,3 execution.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the circuit theory diagrams of the utility model CAN transducer.
Fig. 2 is a control flow chart of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, a kind of CAN transducer comprises a housing, and its internal circuit comprises: control loop 1, signal transmission loop 2, voltage are adjusted loop 3, brake signal loop 4, power supply signal loop 7, ABS signal circuit 5 and EBD signal circuit 6.
Signal transmission loop 2, voltage are adjusted loop 3, brake signal loop 4, power supply signal loop 7, ABS signal circuit 5 and EBD signal circuit 6 and are connected with control loop 1 respectively, external signal is by connector J0 access control loop 1, and signal transmission loop 2, voltage are adjusted the output signal of loop 3, brake signal loop 4, power supply signal loop 7, ABS signal circuit 5 and EBD signal circuit 6 by connector J1 output.
Control loop 1 is made of control chip U1, resistance R 101, R102, R103, capacitor C 101, C102, C103, C104, C105, C106 and crystal oscillator X1; After 1,2 pin of control chip U1 are connected to each other, be connected with capacitor C 105, C106 respectively, connect then+the 5V power supply, the other end of capacitor C 105, C106 is connected to each other, then ground connection; 11 pin of control chip U1 are by resistance R 101 ground connection, 20 pin of control chip U1 are by resistance R 102 ground connection, 21 pin of control chip U1 connect+the 5V power supply, 22 pin of control chip U1 connect+the 5V power supply by resistance R 102,24 pin of control chip U1 connect respectively+5V power supply and capacitor C 103, the other end ground connection of capacitor C 103; The 25 pin ground connection of control chip U1,26 pin of control chip U1 are by capacitor C 104 ground connection, the 48 pin ground connection of control chip U1; Crystal oscillator X1 is connected in parallel on 27,28 pin of control chip U1, and crystal oscillator X1 two ends connect capacitor C 101 and capacitor C 102 respectively, and the other end of capacitor C 101 and capacitor C 102 is connected to each other, then ground connection.
1 pin of connector J0 connects+the 5V power supply by resistance R 105, and then 42 pin of control chip U1 in the access control loop 1,2 pin of JO are connected with 43 pin of control chip U1 in the control loop 1,3,4 pin of JO are connected with 23,20 pin of control chip U1 respectively, and 6,7,8 pin of JO are connected with 37,39,38 pin of control chip U1 respectively; 8 pin of JO are connected to each other by 9 pin of resistance R 106 with J0, connect+the 5V power supply the 10 pin ground connection of J0 then.
Signal transmission loop 2 is made of transceiving chip U2, choking-winding Choke, resistance R 203, R204, capacitor C 201, C202, C203, C204 and protection chip ESD1; 40,41 pin of control chip U1 in 1, the 4 pin access control loops 1 of transceiving chip U2,16 pin of control chip U1 in the 8 pin access control loops 1 of transceiving chip U2; 3 pin of transceiving chip U2 connect respectively+5V power supply and capacitor C 201, and the other end of capacitor C 201 is connected back ground connection with 2 pin of transceiving chip U2; 6,7 pin of transceiving chip U2 are connected with 2,1 pin of choking-winding Choke respectively, 3 pin of choking-winding Choke connect 1 pin of resistance R 203, capacitor C 203 and protection chip ESD1 respectively, insert 8 pin of connector J1 then, 4 pin of choking-winding Choke connect 2 pin of resistance R 204, capacitor C 204 and protection chip ESD1 respectively, insert 7 pin of connector J1 then; 5 pin of transceiving chip U2 connect resistance R 203, R204 and capacitor C 202 respectively, capacitor C 202 other end ground connection, the other end ground connection of capacitor C 203, C204, the 3 pin ground connection of protection chip ESD1.
Voltage is adjusted loop 3 and is made of resistance R 301, R302, electrochemical capacitor C301, C306, capacitor C 302, C303, C304, C305, diode D301, D302, Transient Suppression Diode TVS301, voltage stabilizing didoe TVS302 and pressurizer U3; The positive pole of diode D301, D302 inserts 2,4 pin of connector J1 respectively, the negative pole of diode D301, D302 is connected to each other 1 pin that connects Transient Suppression Diode TVS301, electrochemical capacitor C301, capacitor C 302 and pressurizer U3 by resistance R 302 respectively, 2 pin of pressurizer U3 connect the negative pole of 5 pin, capacitor C 304, C305, electrochemical capacitor C306 and the voltage stabilizing didoe TVS302 of pressurizer U3, connection+5V power supply more respectively by resistance R 301; The other end of Transient Suppression Diode TVS301 connects the other end, the capacitor C 303 of the other end, the capacitor C 302 of electrochemical capacitor C301,3 pin, capacitor C 304, the other end of C305, the other end of electrochemical capacitor C306 and the positive pole of voltage stabilizing didoe TVS302 of pressurizer U3 respectively, ground connection then, 4 pin of another termination pressurizer U3 of capacitor C 303,2 pin of pressurizer U3,23 pin of control chip U1 in the access control loop 1.
Brake signal loop 4 is made of resistance R 401, R402, capacitor C 401 and voltage stabilizing didoe D401; Resistance R 401 1 ends connect 6 pin of connector J1, and the other end connects the negative pole of resistance R 402, capacitor C 401 and voltage stabilizing didoe D401 respectively, then 4 pin of control chip U1 in the access control loop 1; The positive pole of the other end of the other end of resistance R 402, capacitor C 401 and voltage stabilizing didoe D401 is connected to each other, then ground connection.
ABS signal circuit 5 is made of resistance R 501, R502, R503, capacitor C 501, triode T501, T502 and diode D501; One termination of resistance R 501 is gone into 12 pin of control chip U1 in the control loop 1, the other end of resistance R 501 connects the C utmost point of capacitor C 501, resistance R 502, triode T502 and the B utmost point of triode T501 respectively, the B utmost point of triode T502 is connected with resistance R 503 with the E utmost point of triode T501 respectively, the C utmost point of the triode T501 negative pole of diode D501 respectively connects, and 1 pin that inserts connector J1 connects; The other end of capacitor C 501 is connected with the other end of resistance R 502, the E utmost point of triode T502, the other end of resistance R 503 and the positive pole of diode D501 respectively.
EBD signal circuit 6 is made of resistance R 601, R602, R603, capacitor C 601, triode T601, T602 and diode D601; One termination of resistance R 601 is gone into 14 pin of control chip U1 in the control loop 1, the other end of resistance R 601 connects the C utmost point of capacitor C 601, resistance R 602, triode T602 and the B utmost point of triode T601 respectively, the B utmost point of triode T602 is connected with resistance R 603 with the E utmost point of triode T601 respectively, the C utmost point of the triode T601 negative pole of diode D601 respectively connects, and 5 pin that insert connector J1 connect; The other end of capacitor C 601 is connected with the other end of resistance R 602, the E utmost point of triode T602, the other end of resistance R 603 and the positive pole of diode D601 respectively.
Power supply signal loop 7 is made of resistance R 701, R702, capacitor C 701 and voltage stabilizing didoe D701; Resistance R 701 1 ends connect 4 pin of connector J1, and the other end connects the negative pole of resistance R 702, capacitor C 701 and voltage stabilizing didoe D701 respectively, then 3 pin of control chip U1 in the access control loop 1; The positive pole of the other end of the other end of resistance R 702, capacitor C 701 and voltage stabilizing didoe D701 is connected to each other, then ground connection.
When heavily touching on the brake, especially will brake one when stepping on the end of to, EBD is before ABS works, automatically be the sliding ratio that benchmark removes the comparison rear tyre with the front-wheel earlier, during as variant need the adjustment, the brake fluid pressing system will be adjusted the oil pressure that reaches trailing wheel, makes the distribution effect of brake weight better.The general tailstock standard laid down by the ministries or commissions of the Central Government is known ABS+EBD, and the meaning is improved the counterbalance effect of brake weight exactly on the basis of ABS, prevent whipping and sidesway, and automobile brake is safety more steadily.
During work, detect by brake signal loop 4 whether brake signal is arranged,, continue to detect brake signal by control loop 1 control brake signal loop 4 as not output of outside by signal transmission loop 2; Imported brake signal as the outside, then signal transmission loop 2 is transferred to control loop 1 with brake signal, the control of braking of control loop 1 control ABS signal circuit 5 and EBD signal circuit 6.(referring to Fig. 2)
More than show and described basic principle of the present utility model and principal character and advantage thereof.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (9)
1. CAN transducer, comprise a housing, it is characterized in that its internal circuit comprises: a control loop, a signal transmission loop, a voltage are adjusted loop, a brake signal loop, a power supply signal loop, an ABS signal circuit and an EBD signal circuit; Described signal transmission loop, voltage are adjusted loop, brake signal loop, power supply signal loop, ABS signal circuit and EBD signal circuit and are connected with described control loop respectively, external signal inserts described control loop by connector I, and described signal transmission loop, voltage are adjusted the output signal of loop, brake signal loop, power supply signal loop, ABS signal circuit and EBD signal circuit by connector II output.
2. CAN transducer according to claim 1 is characterized in that: described control loop is made of control chip U1, resistance R 101, R102, R103, capacitor C 101, C102, C103, C104, C105, C106 and crystal oscillator X1; After 1,2 pin of control chip U1 are connected to each other, be connected with capacitor C 105, C106 respectively, connect then+the 5V power supply, the other end of capacitor C 105, C106 is connected to each other, then ground connection; 11 pin of control chip U1 are by resistance R 101 ground connection, 20 pin of control chip U1 are by resistance R 102 ground connection, 21 pin of control chip U1 connect+the 5V power supply, 22 pin of control chip U1 connect+the 5V power supply by resistance R 102,24 pin of control chip U1 connect respectively+5V power supply and capacitor C 103, the other end ground connection of capacitor C 103; The 25 pin ground connection of control chip U1,26 pin of control chip U1 are by capacitor C 104 ground connection, the 48 pin ground connection of control chip U1; Crystal oscillator X1 is connected in parallel on 27,28 pin of control chip U1, and crystal oscillator X1 two ends connect capacitor C 101 and capacitor C 102 respectively, and the other end of capacitor C 101 and capacitor C 102 is connected to each other, then ground connection.
3. CAN transducer according to claim 1, it is characterized in that: 1 pin of described connector I connects+the 5V power supply by resistance R 105, and then 42 pin of control chip U1 in the access control loop, 2 pin of connector I are connected with 43 pin of control chip U1 in the control loop, 3,4 pin of connector I are connected with 23,20 pin of control chip U1 respectively, and 6,7,8 pin of connector I are connected with 37,39,38 pin of control chip U1 respectively; 8 pin of connector I are connected to each other by 9 pin of resistance R 106 with connector I, connect+the 5V power supply the 10 pin ground connection of connector I then.
4. CAN transducer according to claim 1 is characterized in that: described signal transmission loop is made of transceiving chip U2, choking-winding Choke, resistance R 203, R204, capacitor C 201, C202, C203, C204 and protection chip ESD1; 40,41 pin of control chip U1 in 1, the 4 pin access control loops of transceiving chip U2,16 pin of control chip U1 in the 8 pin access control loops of transceiving chip U2; 3 pin of transceiving chip U2 connect respectively+5V power supply and capacitor C 201, and the other end of capacitor C 201 is connected back ground connection with 2 pin of transceiving chip U2; 6,7 pin of transceiving chip U2 are connected with 2,1 pin of choking-winding Choke respectively, 3 pin of choking-winding Choke connect 1 pin of resistance R 203, capacitor C 203 and protection chip ESD1 respectively, insert 8 pin of connector II then, 4 pin of choking-winding Choke connect 2 pin of resistance R 204, capacitor C 204 and protection chip ESD1 respectively, insert 7 pin of connector II then; 5 pin of transceiving chip U2 connect resistance R 203, R204 and capacitor C 202 respectively, capacitor C 202 other end ground connection, the other end ground connection of capacitor C 203, C204, the 3 pin ground connection of protection chip ESD1.
5. CAN transducer according to claim 1 is characterized in that: described voltage is adjusted the loop and is made of resistance R 301, R302, electrochemical capacitor C301, C306, capacitor C 302, C303, C304, C305, diode D301, D302, Transient Suppression Diode TVS301, voltage stabilizing didoe TVS302 and pressurizer U3; The positive pole of diode D301, D302 inserts 2,4 pin of connector II respectively, the negative pole of diode D301, D302 is connected to each other 1 pin that connects Transient Suppression Diode TVS301, electrochemical capacitor C301, capacitor C 302 and pressurizer U3 by resistance R 302 respectively, 2 pin of pressurizer U3 connect the negative pole of 5 pin, capacitor C 304, C305, electrochemical capacitor C306 and the voltage stabilizing didoe TVS302 of pressurizer U3, connection+5V power supply more respectively by resistance R 301; The other end of Transient Suppression Diode TVS301 connects the other end, the capacitor C 303 of the other end, the capacitor C 302 of electrochemical capacitor C301,3 pin, capacitor C 304, the other end of C305, the other end of electrochemical capacitor C306 and the positive pole of voltage stabilizing didoe TVS302 of pressurizer U3 respectively, ground connection then, 4 pin of another termination pressurizer U3 of capacitor C 303,2 pin of pressurizer U3,23 pin of control chip U1 in the access control loop.
6. CAN transducer according to claim 1 is characterized in that: described brake signal loop is made of resistance R 401, R402, capacitor C 401 and voltage stabilizing didoe D401; Resistance R 401 1 ends connect 6 pin of connector II, and the other end connects the negative pole of resistance R 402, capacitor C 401 and voltage stabilizing didoe D401 respectively, then 4 pin of control chip U1 in the access control loop; The positive pole of the other end of the other end of resistance R 402, capacitor C 401 and voltage stabilizing didoe D401 is connected to each other, then ground connection.
7. CAN transducer according to claim 1 is characterized in that: described ABS signal circuit is made of resistance R 501, R502, R503, capacitor C 501, triode T501, T502 and diode D501; One termination of resistance R 501 is gone into 12 pin of control chip U1 in the control loop, the other end of resistance R 501 connects the C utmost point of capacitor C 501, resistance R 502, triode T502 and the B utmost point of triode T501 respectively, the B utmost point of triode T502 is connected with resistance R 503 with the E utmost point of triode T501 respectively, the C utmost point of the triode T501 negative pole of diode D501 respectively connects, and 1 pin that inserts connector II connects; The other end of capacitor C 501 is connected with the other end of resistance R 502, the E utmost point of triode T502, the other end of resistance R 503 and the positive pole of diode D501 respectively.
8. CAN transducer according to claim 1 is characterized in that: described EBD signal circuit is made of resistance R 601, R602, R603, capacitor C 601, triode T601, T602 and diode D601; One termination of resistance R 601 is gone into 14 pin of control chip U1 in the control loop, the other end of resistance R 601 connects the C utmost point of capacitor C 601, resistance R 602, triode T602 and the B utmost point of triode T601 respectively, the B utmost point of triode T602 is connected with resistance R 603 with the E utmost point of triode T601 respectively, the C utmost point of the triode T601 negative pole of diode D601 respectively connects, and 5 pin that insert connector II connect; The other end of capacitor C 601 is connected with the other end of resistance R 602, the E utmost point of triode T602, the other end of resistance R 603 and the positive pole of diode D601 respectively.
9. CAN transducer according to claim 1 is characterized in that: described power supply signal loop is made of resistance R 701, R702, capacitor C 701 and voltage stabilizing didoe D701; Resistance R 701 1 ends connect 4 pin of connector II, and the other end connects the negative pole of resistance R 702, capacitor C 701 and voltage stabilizing didoe D701 respectively, then 3 pin of control chip U1 in the access control loop; The positive pole of the other end of the other end of resistance R 702, capacitor C 701 and voltage stabilizing didoe D701 is connected to each other, then ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200700432U CN201039213Y (en) | 2007-05-21 | 2007-05-21 | CAN converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200700432U CN201039213Y (en) | 2007-05-21 | 2007-05-21 | CAN converter |
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| Publication Number | Publication Date |
|---|---|
| CN201039213Y true CN201039213Y (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200700432U Expired - Lifetime CN201039213Y (en) | 2007-05-21 | 2007-05-21 | CAN converter |
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| CN (1) | CN201039213Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846410A (en) * | 2016-03-24 | 2016-08-10 | 航天科技控股集团股份有限公司 | Simple low-cost on-vehicle low-power power supply protecting circuit |
| CN106274879A (en) * | 2016-08-23 | 2017-01-04 | 贵州天义电器有限责任公司 | A kind of emergency warning lamp drive circuit |
| CN109739129A (en) * | 2018-12-29 | 2019-05-10 | 盛瑞传动股份有限公司 | Automatic transmission network administration apparatus and method |
-
2007
- 2007-05-21 CN CNU2007200700432U patent/CN201039213Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846410A (en) * | 2016-03-24 | 2016-08-10 | 航天科技控股集团股份有限公司 | Simple low-cost on-vehicle low-power power supply protecting circuit |
| CN106274879A (en) * | 2016-08-23 | 2017-01-04 | 贵州天义电器有限责任公司 | A kind of emergency warning lamp drive circuit |
| CN106274879B (en) * | 2016-08-23 | 2019-11-08 | 贵州天义电器有限责任公司 | A kind of warning lamp drive circuit |
| CN109739129A (en) * | 2018-12-29 | 2019-05-10 | 盛瑞传动股份有限公司 | Automatic transmission network administration apparatus and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20080319 |