CN212654297U - Central control system of motor home - Google Patents
Central control system of motor home Download PDFInfo
- Publication number
- CN212654297U CN212654297U CN202021358124.4U CN202021358124U CN212654297U CN 212654297 U CN212654297 U CN 212654297U CN 202021358124 U CN202021358124 U CN 202021358124U CN 212654297 U CN212654297 U CN 212654297U
- Authority
- CN
- China
- Prior art keywords
- resistor
- relay
- microprocessor
- control module
- central control
- 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.)
- Active
Links
Images
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The utility model provides a central control system of a motor home, which comprises a control panel, a central control module, a display screen, and at least one of an information acquisition module, a coulometer interface module, a motor control module, a fan control module and a switch control module; the display screen is a touch screen; the display screen is connected with the control panel, and the control panel is connected with the central control module; the central control module is respectively connected with the information acquisition module, and/or the coulometer interface module, and/or the motor control module, and/or the fan control module and/or the switch control module through a CAN bus. The utility model discloses to car as a house manufacture factory, can provide the modular control function combination, car as a house manufacture factory uses in a flexible way, has also reduced the overall cost.
Description
Technical Field
The utility model relates to a special control system, especially a car as a house center control system.
Background
As the living standard of people increases, more and more consumers are willing to buy a motor home as a means of transportation for travel. Facilities on the caravan are complete, and the caravan not only serves as a vehicle, but also serves as a mobile home.
For various devices on a motor home, a control system with complete functions is required for control. At present, a central control system capable of meeting the requirements of motor home manufacturers is urgently needed to be developed.
Disclosure of Invention
To the not enough of existence among the prior art, the utility model provides a car as a house center control system to car as a house manufacture factory, can provide the modular control function combination, and car as a house manufacture factory uses in a flexible way, has also reduced the overall cost. The embodiment of the utility model provides a technical scheme who adopts is:
a central control system of a motor home comprises a control panel, a central control module, a display screen, and at least one module of an information acquisition module, a coulometer interface module, a motor control module, a fan control module and a switch control module;
the display screen is a touch screen; the display screen is connected with the control panel, and the control panel is connected with the central control module;
the central control module is respectively connected with the information acquisition module, and/or the coulometer interface module, and/or the motor control module, and/or the fan control module and/or the switch control module through a CAN bus.
Further, the information acquisition module comprises a microprocessor U1, one or more analog quantity acquisition circuits, one or more switching quantity acquisition circuits and a CAN communication circuit; the analog quantity acquisition circuit is used for acquiring analog voltage information and sending the analog voltage information to the microprocessor U1, and the switching value acquisition circuit is used for acquiring switching value information and sending the switching value information to the microprocessor U1; the collected information is sent to the CAN bus through the CAN communication circuit in the information collection module, and is finally sent to the central control module.
Furthermore, the analog quantity acquisition circuit comprises an operational amplifier U2, resistors R103, R104, R106, R108 and R109, and capacitors C103 and C105; one end of the resistor R108 is connected with one end of the resistor R109 and one end of the capacitor C105 and is used for being connected with an externally input analog voltage; the other ends of the resistor R109 and the capacitor C105 are grounded; the other end of the resistor R108 is connected with the non-inverting input end of the operational amplifier U2, the inverting input end of the U2 is connected with one end of the resistor R104 and one end of the resistor R106, and the other end of the resistor R106 is grounded; the other end of the resistor R104 is connected with the output end of the operational amplifier U2 and one end of the resistor R103; the other end of the resistor R103 is connected with the corresponding input port of the microprocessor U1 and is grounded through a capacitor C103.
Furthermore, the switching value acquisition circuit comprises an optical coupler U3, resistors R130 and R131; the anode of the input end of the optocoupler U3 is connected with a voltage VDD2, the cathode of the input end of the optocoupler U3 is connected with one end of a resistor R131, and the other end of the resistor R131 is used for connecting switching value input from the outside; the emitter of the output end of the optical coupler U3 is grounded, and the collector of the output end of the optical coupler U3 is connected with the voltage VDD1 through a resistor R130 and is connected with a corresponding input port of the microprocessor U1.
Further, the coulometer interface module comprises a microprocessor U4 and a CAN communication circuit connected with the microprocessor U4; the serial port of the microprocessor U4 is used for connecting with a coulometer.
Further, the motor control module comprises a microprocessor U5, a motor forward and reverse rotation driving circuit and a CAN communication circuit which are respectively connected with the microprocessor U5.
Furthermore, the motor forward and reverse rotation driving circuit comprises relays KA1 and KA2, NPN triodes Q1 and Q2, an NMOS tube Q3, an optocoupler U6, resistors R201, R202, R203, R204, R205 and R206, diodes D1 and D2;
a first fixed switch end of the relay KA1 is connected with a first fixed switch end of the relay KA2 and is used for connecting a battery voltage BAT; the second fixed end of the switch of the relay KA1 is connected with the second fixed end of the switch of the relay KA2 and is connected with the drain electrode of the NMOS tube Q3; the switch moving end of the relay KA1 is connected with one end of the motor MG1, and the switch moving end of the relay KA2 is connected with the other end of the motor MG 1;
one end of a resistor R201 is connected with a control signal M _ PWM _2 of a microprocessor U5 and is grounded through a resistor R202, the other end of the resistor R201 is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is grounded, a collecting electrode is connected with one end of a relay KA1 coil and an anode of a diode D1, and the other end of the relay KA1 coil and a cathode of the diode D1 are connected with a voltage VCC; one end of a resistor R203 is connected with a control signal M _ PWM _3 of the microprocessor U5 and is grounded through a resistor R204, the other end of the resistor R203 is connected with a base electrode of a triode Q2, an emitting electrode of the triode Q2 is grounded, a collecting electrode is connected with one end of a relay KA2 coil and an anode of a diode D2, and the other end of the relay KA2 coil and a cathode of the diode D2 are connected with a voltage VCC;
the anode of the input end of the optocoupler U6 is connected with a voltage VDD1, and the cathode of the input end is connected with a control signal M _ PWM _1 of the microprocessor U5 through a resistor R207; the collector of the output end of the optocoupler U6 is used for being connected with a battery voltage BAT, the emitter of the output end of the U6 is connected with one end of a resistor R205, the other end of the resistor R205 is connected with the grid of an NMOS tube Q3 and one end of a resistor R206, and the source of the NMOS tube Q3 is connected with the other end of the resistor R206 and is grounded or directly grounded through a sampling resistor R208.
Further, the switch control module comprises a microprocessor U7, and a relay switch circuit and a CAN communication circuit which are respectively connected with the microprocessor U7.
Further, the relay switch circuit comprises an NPN triode Q5, a relay KA3, a diode D3 and resistors R301 and R302; one end of the resistor R301 is connected with the corresponding control end of the microprocessor U7 and is grounded through a resistor R302; the other end of the resistor R301 is connected with the base electrode of a triode Q5, the emitter electrode of the triode Q5 is grounded, the collector electrode is connected with the anode of a diode D3 and one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 and the cathode of a diode D3 are connected with a voltage VCC; the movable switch end of the relay KA3 is used for being connected with a battery cell voltage BAT, and one fixed switch end of the relay KA3 is used for being connected with electric equipment.
Furthermore, the control panel and the central control module are connected through WiFi.
The utility model has the advantages that:
1) the operation is flexible and convenient, and the condition in the motor home can be controlled at any time.
2) The system is flexible in composition, can be freely customized by a user, and saves funds for customers with different requirements.
3) New functions can be added to the existing system framework to add new functions to the system.
4) The design is flexible: each module can be independently designed, the system is upgraded, the whole modification is not needed, and only local modification is needed; a certain module can be optimized without affecting the whole; development and modification costs are also reduced.
5) The combination of the products is flexible: the modules can be combined and increased or decreased at will without redesign; several center control panels with different styles and different grades can be designed, and the system with different styles can be changed by only changing the center control panel.
Drawings
Fig. 1 is an electrical block diagram of a central control system in an embodiment of the present invention.
Fig. 2 is a schematic view of an information collection module in an embodiment of the present invention.
Fig. 3 is a schematic diagram of an analog quantity acquisition circuit in an embodiment of the present invention.
Fig. 4 is a schematic diagram of a switching value acquisition circuit in an embodiment of the present invention.
Fig. 5 is a schematic diagram of a coulomb meter interface module in an embodiment of the invention.
Fig. 6 is a schematic diagram of a motor control module according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a motor forward/reverse rotation driving circuit in an embodiment of the present invention.
Fig. 8 is a schematic diagram of a switch control module according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of a relay switch circuit in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a motor home central control system, as shown in fig. 1, includes a control panel, a central control module, a display screen, an information acquisition module, a coulometer interface module, a motor control module, a fan control module, and a switch control module;
the display screen is a touch screen; the display screen is connected with the control panel, the control panel is connected with the central control module, and preferably, WiFi connection is adopted;
the central control module is respectively connected with the information acquisition module, the coulometer interface module, the motor control module, the fan control module and the switch control module through a CAN bus;
a switch or a key for controlling equipment in the house is arranged on the touch screen;
the central control module comprises a main controller and a CAN communication circuit connected with the main controller; the main controller adopts an STM32F103 singlechip; the CAN transceiver adopted in the CAN communication circuit is TJA 1040; the control panel and the WiFi module adopted in the central control module can be ESP 12F;
as shown in fig. 2, the information acquisition module includes a microprocessor U1, one or more analog acquisition circuits, one or more switching value acquisition circuits, and a CAN communication circuit; the analog quantity acquisition circuit is used for acquiring analog voltage information and sending the analog voltage information to the microprocessor U1, and the switching value acquisition circuit is used for acquiring switching value information and sending the switching value information to the microprocessor U1; the collected information is sent to a CAN bus through a CAN communication circuit in the information collection module, and is finally sent to the central control module; when the water level sensor is actually used, for example, the water level sensor has three-gear output which is respectively connected with the input ends of three switching value acquisition circuits in the information acquisition module, so that three sections of water level information of high, medium and low water levels in the water tank can be obtained; if the water level sensor is output by analog voltage, connecting the water level sensor with an input end of an analog quantity acquisition circuit;
as shown in fig. 3, the analog acquisition circuit includes an operational amplifier U2, resistors R103, R104, R106, R108, R109, and capacitors C103 and C105; one end of the resistor R108 is connected with one end of the resistor R109 and one end of the capacitor C105 and is used for being connected with an externally input analog voltage; the other ends of the resistor R109 and the capacitor C105 are grounded; the other end of the resistor R108 is connected with the non-inverting input end of the operational amplifier U2, the inverting input end of the U2 is connected with one end of the resistor R104 and one end of the resistor R106, and the other end of the resistor R106 is grounded; the other end of the resistor R104 is connected with the output end of the operational amplifier U2 and one end of the resistor R103; the other end of the resistor R103 is connected to a corresponding input port of the microprocessor U1 and is grounded through a capacitor C103.
As shown in fig. 4, the switching value acquisition circuit includes an optocoupler U3, resistors R130, R131; the anode of the input end of the optocoupler U3 is connected with a voltage VDD2, the cathode of the input end of the optocoupler U3 is connected with one end of a resistor R131, and the other end of the resistor R131 is used for connecting switching value input from the outside; the emitter of the output end of the optical coupler U3 is grounded, and the collector of the output end of the optical coupler U3 is connected with the voltage VDD1 through a resistor R130 and is connected with a corresponding input port of the microprocessor U1.
In this example, VDD1 is 3.3v and VDD2 is 5 v.
As shown in fig. 5, the coulometer interface module includes a microprocessor U4 and CAN communication circuitry connected to microprocessor U4; the serial port of the microprocessor U4 is used for connecting a coulometer; the coulometer CAN collect the information of the storage battery such as electric quantity, voltage, current, etc., then send to the microprocessor U4, then send to the CAN bus through the CAN communication circuit in the coulometer interface module, finally send to the central control module;
as shown in fig. 6, the motor control module includes a microprocessor U5, and a motor forward/reverse rotation driving circuit and a CAN communication circuit respectively connected to the microprocessor U5;
as shown in fig. 7, the motor forward and reverse rotation driving circuit includes relays KA1, KA2, NPN triodes Q1, Q2, NMOS transistor Q3, optocoupler U6, resistors R201, R202, R203, R204, R205, R206, diodes D1, and D2;
a first fixed switch end of the relay KA1 is connected with a first fixed switch end of the relay KA2 and is used for connecting a battery voltage BAT; the second fixed end of the switch of the relay KA1 is connected with the second fixed end of the switch of the relay KA2 and is connected with the drain electrode of the NMOS tube Q3; the switch moving end of the relay KA1 is connected with one end of the motor MG1, and the switch moving end of the relay KA2 is connected with the other end of the motor MG 1;
one end of a resistor R201 is connected with a control signal M _ PWM _2 of a microprocessor U5 and is grounded through a resistor R202, the other end of the resistor R201 is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is grounded, a collecting electrode is connected with one end of a relay KA1 coil and an anode of a diode D1, and the other end of the relay KA1 coil and a cathode of the diode D1 are connected with a voltage VCC; one end of a resistor R203 is connected with a control signal M _ PWM _3 of the microprocessor U5 and is grounded through a resistor R204, the other end of the resistor R203 is connected with a base electrode of a triode Q2, an emitting electrode of the triode Q2 is grounded, a collecting electrode is connected with one end of a relay KA2 coil and an anode of a diode D2, and the other end of the relay KA2 coil and a cathode of the diode D2 are connected with a voltage VCC; in this embodiment, VCC is 12 v;
the anode of the input end of the optocoupler U6 is connected with a voltage VDD1, and the cathode of the input end is connected with a control signal M _ PWM _1 of the microprocessor U5 through a resistor R207; the collector of the output end of the optocoupler U6 is used for being connected with a battery voltage BAT, the emitter of the output end of the U6 is connected with one end of a resistor R205, the other end of the resistor R205 is connected with the grid of an NMOS tube Q3 and one end of a resistor R206, and the source of the NMOS tube Q3 is connected with the other end of the resistor R206 and is grounded or directly grounded through a sampling resistor R208; when the motor current needs to be monitored, a sampling resistor R208 needs to be arranged, and one end of the R208, which is connected with the source of the Q3, is connected with the microprocessor U5 through a signal amplifier.
The motor control module can control a jack motor, a water pump motor and the like.
The fan control module is connected with a fan in the motor home, and the part is a conventional circuit and is not described again. The fan control module also comprises a microprocessor and a CAN communication circuit connected with the microprocessor.
As shown in fig. 8, the switch control module includes a microprocessor U7, and a relay switch circuit and a CAN communication circuit respectively connected to the microprocessor U7;
as shown in fig. 9, the relay switch circuit includes an NPN transistor Q5, a relay KA3, a diode D3, and resistors R301 and R302; one end of the resistor R301 is connected with the corresponding control end of the microprocessor U7 and is grounded through a resistor R302; the other end of the resistor R301 is connected with the base electrode of a triode Q5, the emitter electrode of the triode Q5 is grounded, the collector electrode is connected with the anode of a diode D3 and one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 and the cathode of a diode D3 are connected with a voltage VCC; the movable switch end of the relay KA3 is used for being connected with a battery cell voltage BAT, and one fixed switch end of the relay KA3 is used for being connected with electric equipment.
In actual use, a plurality of relay switch circuits can be configured, so that different equipment switches can be used.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. A central control system of a motor home is characterized by comprising at least one of a control panel, a central control module, a display screen, an information acquisition module, a coulometer interface module, a motor control module, a fan control module and a switch control module;
the display screen is a touch screen; the display screen is connected with the control panel, and the control panel is connected with the central control module;
the central control module is respectively connected with the information acquisition module, and/or the coulometer interface module, and/or the motor control module, and/or the fan control module and/or the switch control module through a CAN bus.
2. The caravan central control system according to claim 1,
the information acquisition module comprises a microprocessor U1, one or more analog quantity acquisition circuits, one or more switching value acquisition circuits and a CAN communication circuit; the analog quantity acquisition circuit is used for acquiring analog voltage information and sending the analog voltage information to the microprocessor U1, and the switching value acquisition circuit is used for acquiring switching value information and sending the switching value information to the microprocessor U1; the collected information is sent to the CAN bus through the CAN communication circuit in the information collection module, and is finally sent to the central control module.
3. The caravan central control system according to claim 2,
the analog quantity acquisition circuit comprises an operational amplifier U2, resistors R103, R104, R106, R108 and R109, and capacitors C103 and C105; one end of the resistor R108 is connected with one end of the resistor R109 and one end of the capacitor C105 and is used for being connected with an externally input analog voltage; the other ends of the resistor R109 and the capacitor C105 are grounded; the other end of the resistor R108 is connected with the non-inverting input end of the operational amplifier U2, the inverting input end of the U2 is connected with one end of the resistor R104 and one end of the resistor R106, and the other end of the resistor R106 is grounded; the other end of the resistor R104 is connected with the output end of the operational amplifier U2 and one end of the resistor R103; the other end of the resistor R103 is connected with the corresponding input port of the microprocessor U1 and is grounded through a capacitor C103.
4. The caravan central control system according to claim 2,
the switching value acquisition circuit comprises an optocoupler U3, resistors R130 and R131; the anode of the input end of the optocoupler U3 is connected with a voltage VDD2, the cathode of the input end of the optocoupler U3 is connected with one end of a resistor R131, and the other end of the resistor R131 is used for connecting switching value input from the outside; the emitter of the output end of the optical coupler U3 is grounded, and the collector of the output end of the optical coupler U3 is connected with the voltage VDD1 through a resistor R130 and is connected with a corresponding input port of the microprocessor U1.
5. The caravan central control system according to claim 1,
the coulometer interface module comprises a microprocessor U4 and a CAN communication circuit connected with the microprocessor U4; the serial port of the microprocessor U4 is used for connecting with a coulometer.
6. The caravan central control system according to claim 1,
the motor control module comprises a microprocessor U5, a motor forward and reverse rotation driving circuit and a CAN communication circuit, wherein the motor forward and reverse rotation driving circuit and the CAN communication circuit are respectively connected with the microprocessor U5.
7. The caravan central control system according to claim 6,
the motor forward and reverse rotation driving circuit comprises relays KA1 and KA2, NPN triodes Q1 and Q2, an NMOS tube Q3, an optocoupler U6, resistors R201, R202, R203, R204, R205 and R206, diodes D1 and D2;
a first fixed switch end of the relay KA1 is connected with a first fixed switch end of the relay KA2 and is used for connecting a battery voltage BAT; the second fixed end of the switch of the relay KA1 is connected with the second fixed end of the switch of the relay KA2 and is connected with the drain electrode of the NMOS tube Q3; the switch moving end of the relay KA1 is connected with one end of the motor MG1, and the switch moving end of the relay KA2 is connected with the other end of the motor MG 1;
one end of a resistor R201 is connected with a control signal M _ PWM _2 of a microprocessor U5 and is grounded through a resistor R202, the other end of the resistor R201 is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is grounded, a collecting electrode is connected with one end of a relay KA1 coil and an anode of a diode D1, and the other end of the relay KA1 coil and a cathode of the diode D1 are connected with a voltage VCC; one end of a resistor R203 is connected with a control signal M _ PWM _3 of the microprocessor U5 and is grounded through a resistor R204, the other end of the resistor R203 is connected with a base electrode of a triode Q2, an emitting electrode of the triode Q2 is grounded, a collecting electrode is connected with one end of a relay KA2 coil and an anode of a diode D2, and the other end of the relay KA2 coil and a cathode of the diode D2 are connected with a voltage VCC;
the anode of the input end of the optocoupler U6 is connected with a voltage VDD1, and the cathode of the input end is connected with a control signal M _ PWM _1 of the microprocessor U5 through a resistor R207; the collector of the output end of the optocoupler U6 is used for being connected with a battery voltage BAT, the emitter of the output end of the U6 is connected with one end of a resistor R205, the other end of the resistor R205 is connected with the grid of an NMOS tube Q3 and one end of a resistor R206, and the source of the NMOS tube Q3 is connected with the other end of the resistor R206 and is grounded or directly grounded through a sampling resistor R208.
8. The caravan central control system according to claim 1,
the switch control module comprises a microprocessor U7, and a relay switch circuit and a CAN communication circuit which are respectively connected with the microprocessor U7.
9. The caravan central control system according to claim 8,
the relay switch circuit comprises an NPN triode Q5, a relay KA3, a diode D3 and resistors R301 and R302; one end of the resistor R301 is connected with the corresponding control end of the microprocessor U7 and is grounded through a resistor R302; the other end of the resistor R301 is connected with the base electrode of a triode Q5, the emitter electrode of the triode Q5 is grounded, the collector electrode is connected with the anode of a diode D3 and one end of a coil of a relay KA3, and the other end of the coil of the relay KA3 and the cathode of a diode D3 are connected with a voltage VCC; the movable switch end of the relay KA3 is used for being connected with a battery cell voltage BAT, and one fixed switch end of the relay KA3 is used for being connected with electric equipment.
10. The caravan central control system according to claim 1,
the control panel is connected with the central control module through WiFi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021358124.4U CN212654297U (en) | 2020-07-10 | 2020-07-10 | Central control system of motor home |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021358124.4U CN212654297U (en) | 2020-07-10 | 2020-07-10 | Central control system of motor home |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212654297U true CN212654297U (en) | 2021-03-05 |
Family
ID=74761196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021358124.4U Active CN212654297U (en) | 2020-07-10 | 2020-07-10 | Central control system of motor home |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212654297U (en) |
-
2020
- 2020-07-10 CN CN202021358124.4U patent/CN212654297U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6311137B1 (en) | Information display apparatus, information relay apparatus used in power generation system, information display method and information relay method, and information transmission method | |
| JP2012529259A (en) | Energy saving control device, power connector and switch device with energy saving control device | |
| CN208834293U (en) | One kind is mostly from control module automatic addressing device | |
| CN112938765A (en) | Intelligent frequency conversion all-in-one machine for construction elevator | |
| CN105573295A (en) | Stereo garage remote monitoring diagnosis system, and diagnosis method thereof | |
| CN106020050A (en) | Remote electric vehicle controller and control method | |
| CN212654297U (en) | Central control system of motor home | |
| CN215375668U (en) | Test circuit of circuit board | |
| CN113085879A (en) | Vehicle control method, device, storage medium, electronic device, and vehicle | |
| CN215890409U (en) | Water pump controller | |
| CN214114701U (en) | Intelligent frequency conversion all-in-one machine for construction elevator | |
| CN114416568A (en) | TBOX power management automatic test equipment, system and method | |
| CN212965771U (en) | Intelligent motor home control system | |
| CN209426610U (en) | A kind of motor-driven loading vehicle battery pack parameter display system | |
| CN106004730A (en) | Automotive heterogeneous network convergence device and plug and play expanding method of automotive intelligent equipment based on same | |
| CN207403602U (en) | A kind of wired charging system of lifting cross sliding type mechanical parking equipment | |
| CN205880583U (en) | Long -range whole electric automobile controller | |
| CN101881966A (en) | Stereo garage controller extension unit | |
| CN1125551C (en) | Electronic encoder | |
| CN218567885U (en) | Shuttle control device | |
| CN212433293U (en) | Terminal automatic testing device | |
| CN205862552U (en) | There is the wireless acoustooptic alarm of circuit testing function | |
| CN215340086U (en) | Vehicle-mounted equipment detects frock | |
| CN207594740U (en) | Electric automobile intelligent control system and electric vehicle | |
| CN219891557U (en) | Anti-dead-time circuit for electric vehicle instrument panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |