CN214503767U - Power load state monitoring device for passenger car body control module - Google Patents
Power load state monitoring device for passenger car body control module Download PDFInfo
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- CN214503767U CN214503767U CN202023028350.9U CN202023028350U CN214503767U CN 214503767 U CN214503767 U CN 214503767U CN 202023028350 U CN202023028350 U CN 202023028350U CN 214503767 U CN214503767 U CN 214503767U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 56
- 238000013016 damping Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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Abstract
The utility model discloses a power load state monitoring device of a passenger car body control module, which comprises a singlechip and a car body control module; the singlechip controls the switch of the electric appliance of the vehicle through the vehicle body control module; a current sampling circuit and a voltage sampling circuit are connected between the vehicle body control module and the electrical appliance; the current sampling circuit is also connected with the singlechip through an operational amplifier; the single chip microcomputer collects voltage and current data output by the vehicle body control module in real time through the current sampling circuit and the voltage sampling circuit. The utility model converts the current signal on the load electrical appliance into a voltage signal through the high-precision current sampling resistor, inputs the voltage signal into the singlechip for control after the operational amplifier processing, and samples the output voltage of the vehicle body control module in real time through the voltage sampling resistor; accurate and stable voltage signals can be obtained and filtered by the operational amplifier, so that the single chip microcomputer can correctly judge the load state; the authenticity of the collected data is ensured.
Description
Technical Field
The utility model belongs to the technical field of vehicle control, especially, relate to a passenger train automobile body control module power load state monitoring devices.
Background
The bus Body Control Module (BCM) is a control module with powerful design function, realizes discrete control function and controls electrical appliances. It manages numerous vehicle functions including door opening and closing, interior and exterior lighting, safety functions, wipers, turn indicators, air conditioning systems, signpost display, and power management, among others. The technical scheme used at present is as shown in fig. 4, and all the manual control signals are input to the vehicle body control module through switch signals or CAN signals, and then the vehicle body control module outputs the signals to provide power for various electric appliances.
The power output in the vehicle body control module is a core part, and one scheme is that the intelligent high-side power switch is used for controlling and has overheat protection and overcurrent protection, a single chip microcomputer in the vehicle body control module controls the on-off of the intelligent high-side power switch, and the intelligent high-side power switch feeds a current value to a pin of the single chip microcomputer through an external resistor to judge whether the output is short-circuited or not so as to play a short-circuit protection function; however, the current feedback depends on the current of the load electrical appliance, when the load current is small, the feedback current value is unstable, and the load current is large, so that the accurate current can be fed back to the single chip microcomputer, the single chip microcomputer can make correct judgment, and for some loads with small current or faults, the feedback value is not favorable for the correct judgment of the single chip microcomputer.
The other scheme is that the PMOS tube is used for control, the device of the scheme has no protection function, overvoltage, overcurrent and overtemperature protection is realized through an external circuit, the occupied areas of the device and a peripheral circuit are large, miniaturization and integration are not facilitated, meanwhile, the consistency of the combined control circuit is poor, an unstable phenomenon exists in the operation process, and the scheme is gradually eliminated at present.
In order to solve the problems, a monitoring device for the power load state of a passenger car body control module is designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a passenger train body control module power load state monitoring devices, through high accuracy current sampling resistance with the load on the electrical apparatus current signal conversion voltage signal, input the singlechip after the processing is put to the fortune and control, sample the output voltage of body control module in real time through voltage sampling resistance simultaneously; accurate and stable voltage signals can be obtained and filtered by the operational amplifier, so that the single chip microcomputer can correctly judge the load state; the authenticity of the collected data is ensured.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a power load state monitoring device of a passenger car body control module, which comprises a singlechip and a car body control module; the single chip microcomputer controls the on-off of electric appliances of the vehicle through the vehicle body control module; a current sampling circuit and a voltage sampling circuit are connected between the vehicle body control module and the electrical appliance; the current sampling circuit is also connected with the singlechip through an operational amplifier; the single chip microcomputer collects voltage and current data output by the vehicle body control module in real time through the current sampling circuit and the voltage sampling circuit.
Further, the current sampling circuit comprises a current sampling resistor; the two ends of the current sampling resistor are connected with the input end of an operational amplifier; the output end of the operational amplifier is connected with the singlechip; the operational amplifier collects voltage drop data of the current sampling circuit when current passes through the operational amplifier and transmits the voltage drop data to the single chip microcomputer;
wherein the current sampling resistor is a precision current sampling chip resistor of milliohm level; the operational amplifier is a low offset voltage low temperature drift high precision operational amplifier.
Furthermore, the voltage sampling circuit is a voltage sampling resistor, and the voltage sampling resistor is connected between the output end of the vehicle body control module and the ground end; the voltage sampling resistor is a high-precision chip resistor.
Further, the monitoring device is mounted in a housing; a cover body is arranged above the shell through a fixing bolt; the cover body is provided with heat dissipation holes;
two opposite inner side surfaces of the shell are respectively provided with a positioning column; a plurality of mounting studs are arranged on the inner bottom surface of the positioning column side by side;
a mounting plate is movably mounted in the shell; the mounting plate is mounted on the mounting stud through a bolt; a circuit board is fixed on the upper surface of the mounting plate; the single chip microcomputer is arranged on the circuit board;
wherein, two opposite side surfaces of the mounting plate are respectively provided with a positioning groove; the positioning groove is in sliding fit with the positioning column; the upper surface of the mounting plate is provided with a plurality of mounting holes side by side; the bolt penetrates through the mounting hole to be meshed with the threaded hole in the mounting stud; a damping spring is sleeved on the mounting stud; carry out the shock attenuation to the circuit board through setting up damping spring, avoid vehicle vibrations to lead to the circuit board to take place to drop, cause the damage.
Further, the cover body is fixed on the shell through a fixing bolt; the upper surfaces of the two sides of the shell are respectively provided with a plurality of fixing screw holes; a plurality of fixing holes are respectively formed in two sides of the upper surface of the cover body; the fixing bolt penetrates through the fixing hole and is meshed with the fixing screw hole.
The utility model discloses following beneficial effect has:
the utility model converts the current signal on the load electrical appliance into a voltage signal through the high-precision current sampling resistor, inputs the voltage signal into the singlechip for control after the operational amplifier processing, and samples the output voltage of the vehicle body control module in real time through the voltage sampling resistor; accurate and stable voltage signals can be obtained and filtered by the operational amplifier, so that the single chip microcomputer can correctly judge the load state; the authenticity of the collected data is ensured.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a system block diagram of a passenger vehicle body control module power load condition monitoring device;
FIG. 2 is a system block diagram of a passenger vehicle body control module power load condition monitoring device;
FIG. 3 is a schematic structural diagram of a power load state monitoring device of a passenger vehicle body control module;
fig. 4 is a block diagram of a prior art system.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-2, the utility model relates to a power load state monitoring device for a passenger car body control module, which comprises a single chip microcomputer and a car body control module; the singlechip controls the switch of the electric appliance of the vehicle through the vehicle body control module; a current sampling circuit and a voltage sampling circuit are connected between the vehicle body control module and the electrical appliance; the current sampling circuit is also connected with the singlechip through an operational amplifier; the single chip microcomputer collects voltage and current data output by the vehicle body control module in real time through the current sampling circuit and the voltage sampling circuit.
The current sampling circuit comprises a current sampling resistor; two ends of the current sampling resistor are connected with the input end of an operational amplifier; the output end of the operational amplifier is connected with the singlechip; the operational amplifier collects voltage drop data of the current sampling circuit when current passes through the operational amplifier and transmits the voltage drop data to the single chip microcomputer; wherein the current sampling resistor is a milliohm-level precision current sampling chip resistor; the operational amplifier is a low offset voltage low temperature drift high precision operational amplifier;
the voltage sampling circuit is a voltage sampling resistor, and the voltage sampling resistor is connected between the output end of the vehicle body control module and a grounding end; the voltage sampling resistor is a high-precision chip resistor.
Wherein the monitoring device is mounted in the housing 1 as shown in fig. 3; a cover body 7 is arranged above the shell 1 through a fixing bolt; the cover body 7 is fixed on the shell 1 through a fixing bolt 4; the upper surfaces of two sides of the shell 1 are respectively provided with a plurality of fixing screw holes 103; a plurality of fixing holes 703 are respectively arranged on two sides of the upper surface of the cover body 7; the fixing bolt 4 passes through the fixing hole 703 to be engaged with the fixing screw hole 103; the cover 7 is provided with heat dissipation holes 702; heat dissipation is performed through the heat dissipation holes 702, so that the phenomenon that components are burnt due to overhigh temperature of the circuit board 6 is avoided;
two opposite inner side surfaces of the shell 1 are respectively provided with a positioning column 101; a plurality of mounting studs 102 are arranged on the inner bottom surface of the positioning column 101 side by side; a mounting plate 2 is movably arranged in the shell 1; the mounting plate 2 is mounted on the mounting stud 102 through a bolt 5; a circuit board 6 is fixed on the upper surface of the mounting plate 2; the singlechip is arranged on the circuit board 6; a power interface and a data interface are arranged on the cover body 7; the circuit board 6 is electrically connected with the vehicle electrical appliance through a data line and a power line;
wherein, two opposite side surfaces of the mounting plate 2 are respectively provided with a positioning groove 201; the positioning groove 201 is in sliding fit with the positioning column 101; a plurality of mounting holes 202 are arranged on the upper surface of the mounting plate 2 side by side; the bolt 5 passes through the mounting hole 202 to be meshed with a threaded hole on the mounting stud 102; the mounting stud 102 is sleeved with a damping spring 3; carry out the shock attenuation to circuit board 6 through setting up damping spring 3, avoid vehicle vibrations to lead to circuit board 6 to take place to drop, cause the damage.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a passenger train automobile body control module power load condition monitoring devices which characterized in that: the device comprises a singlechip and a vehicle body control module; the single chip microcomputer controls the on-off of electric appliances of the vehicle through the vehicle body control module; a current sampling circuit and a voltage sampling circuit are connected between the vehicle body control module and the electrical appliance; the current sampling circuit is also connected with the singlechip through an operational amplifier;
the single chip microcomputer collects voltage and current data output by the vehicle body control module in real time through the current sampling circuit and the voltage sampling circuit.
2. The passenger vehicle body control module power load condition monitoring device of claim 1, wherein the current sampling circuit comprises a current sampling resistor; the two ends of the current sampling resistor are connected with the input end of an operational amplifier; the output end of the operational amplifier is connected with the singlechip; the operational amplifier collects voltage drop data of the current sampling circuit when current passes through the operational amplifier and transmits the voltage drop data to the single chip microcomputer;
wherein the current sampling resistor is a precision current sampling chip resistor of milliohm level; the operational amplifier is a low offset voltage low temperature drift high precision operational amplifier.
3. The power load state monitoring device of the passenger vehicle body control module according to claim 1, wherein the voltage sampling circuit is a voltage sampling resistor, and the voltage sampling resistor is connected between the output end of the vehicle body control module and the ground end; the voltage sampling resistor is a high-precision chip resistor.
4. A passenger vehicle body control module power load condition monitoring device according to claim 1, characterized in that the monitoring device is mounted in a housing (1); a cover body (7) is arranged above the shell (1) through a fixing bolt; the cover body (7) is provided with heat dissipation holes (702);
two opposite inner side surfaces of the shell (1) are respectively provided with a positioning column (101); a plurality of mounting studs (102) are arranged on the inner bottom surface of the positioning column (101) side by side;
a mounting plate (2) is movably mounted in the shell (1); the mounting plate (2) is mounted on the mounting stud (102) through a bolt (5); a circuit board (6) is fixed on the upper surface of the mounting plate (2); the single chip microcomputer is arranged on the circuit board (6);
wherein, two opposite side surfaces of the mounting plate (2) are respectively provided with a positioning groove (201); the positioning groove (201) is in sliding fit with the positioning column (101); a plurality of mounting holes (202) are arranged on the upper surface of the mounting plate (2) side by side; the bolt (5) penetrates through the mounting hole (202) to be meshed with a threaded hole in the mounting stud (102); the mounting stud (102) is sleeved with a damping spring (3).
5. The passenger vehicle body control module power load state monitoring device according to claim 4, wherein the cover body (7) is fixed on the housing (1) through a fixing bolt (4); the upper surfaces of two sides of the shell (1) are respectively provided with a plurality of fixing screw holes (103); a plurality of fixing holes (703) are respectively formed in two sides of the upper surface of the cover body (7); the fixing bolt (4) penetrates through the fixing hole (703) to be meshed with the fixing screw hole (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028350.9U CN214503767U (en) | 2020-12-16 | 2020-12-16 | Power load state monitoring device for passenger car body control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028350.9U CN214503767U (en) | 2020-12-16 | 2020-12-16 | Power load state monitoring device for passenger car body control module |
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| Publication Number | Publication Date |
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| CN214503767U true CN214503767U (en) | 2021-10-26 |
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| CN202023028350.9U Active CN214503767U (en) | 2020-12-16 | 2020-12-16 | Power load state monitoring device for passenger car body control module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986713A (en) * | 2020-12-16 | 2021-06-18 | 安徽阿瑞特汽车电子科技有限公司 | Power load state monitoring device for passenger car body control module |
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2020
- 2020-12-16 CN CN202023028350.9U patent/CN214503767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986713A (en) * | 2020-12-16 | 2021-06-18 | 安徽阿瑞特汽车电子科技有限公司 | Power load state monitoring device for passenger car body control module |
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