CN203037330U - Vehicle overload detection device based on single-chip microcomputer - Google Patents
Vehicle overload detection device based on single-chip microcomputer Download PDFInfo
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- CN203037330U CN203037330U CN 201220653982 CN201220653982U CN203037330U CN 203037330 U CN203037330 U CN 203037330U CN 201220653982 CN201220653982 CN 201220653982 CN 201220653982 U CN201220653982 U CN 201220653982U CN 203037330 U CN203037330 U CN 203037330U
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Abstract
The utility model discloses a vehicle overload detection device based on a single-chip microcomputer. The vehicle overload detection device comprises the single-chip microcomputer. The vehicle overload detection device further comprises an acquisition module, a communication module, a watchdog module, a display module, an alarm lamp and a buzzer which are connected with the single-chip microcomputer, wherein the acquisition module comprises a sensor, an amplifier and an A/D converter which are sequentially connected, the communication module comprises an RS-485 chip, the watchdog module comprises a monitoring chip, and the display module comprises an interface chip as well as an LED display and a keyboard which are respectively connected with the interface chip. The vehicle overload detection device based on the single-chip microcomputer of the utility model can assist in improving the accuracy of vehicle overload detection, saving detection time, improving the efficiency of the vehicle overload detection and shortening the time for the vehicle overload detection. The vehicle overload detection device based on the single-chip microcomputer of the utility model is advantageous in accurate results, simple circuits, convenient installation, low cost and the like.
Description
Technical field
The utility model belongs to automobile technical field, relates in particular to a kind of SCM Based overload of vehicle pick-up unit.
Background technology
Overload of vehicle refers to that the contained cargo mass of haulage vehicle has surpassed the situation of specified loading mass.Overload of vehicle mainly contains two harm greatly: 1. overload of vehicle can increase the infringement of vehicle road pavement, according to general calculation method in the world, the automobile axle load is obeyed " 16 power rule " to the destruction relation of highway pavement, be that the automobile axle load whenever doubles, highway is impaired will to increase by 16 times, and the loss that national highway every year causes because of overload of vehicle is above 30,000,000,000 yuan.2. cause road traffic accident easily.After the automobile overload, vehicle is in overload state and travels, and can cause security performances such as vehicle braked and operability to descend rapidly, shows as that squeegee action is blown out, brake failure, steering gear shake, leaf spring fracture, semiaxis fracture etc.Have in the load-carrying lorry road traffic accident according to statistics more than 80% owing to the overload transport point causes.At present, motor vehicle seriously breaks rules and regulations to overload, transport phenomena transfinites in order effectively to administer, the prevention road traffic accident, safeguard good road traffic order, many vehicle supervision departments have set up " controlling super " mechanism specially, and " controlling super " personnel day and night set out on a journey and find out and stop, often cause traffic jam, look into one and leak hundred, and artificial judgment lacks accuracy, the malpractice in finding out and stopping happens occasionally.
Summary of the invention
The purpose of this utility model is, a kind of SCM Based overload of vehicle pick-up unit is provided, and this device can be weighed and judge whether and be overloaded passing motor vehicles, if overload then shows excess weight and reports to the police.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of SCM Based overload of vehicle pick-up unit, comprise single-chip microcomputer, also comprise the acquisition module, communication module, watchdog module, display module, alarm lamp and the hummer that are connected with single-chip microcomputer respectively, wherein, described acquisition module comprises sensor, amplifier and the A/D converter that connects successively; Described communication module comprises the RS-485 chip; Described watchdog module comprises monitoring chip; Described display module comprises interface chip and the light-emitting diode display that is connected with interface chip respectively and keyboard.
The utility model also has following technical characterstic:
Described single-chip microcomputer adopts the AT89C51 single-chip microcomputer.
Described sensor adopts WPL110 bridge-type LOAD CELLS.
Described amplifier adopts the OP07 amplifier.
Described A/D converter adopts the TLC0838 converter.
Described RS-485 chip adopts the MAX485 chip.
Described monitoring chip adopts the MAX813L chip.
Described alarm lamp adopts the LED lamp.
Described interface chip adopts the 8255A chip.
SCM Based speed of a motor vehicle warning system of the present utility model, utilize single-chip microcomputer as main control chip, from driver's angle, allow the driver by keyboard vehicle dead weight (nominal load capacity) to be set, utilize the bridge-type LOAD CELLS to convert automobile-carried weight to voltage signal; Deliver to the A/D conversion chip after by amplifying circuit voltage being nursed one's health then and convert digital signal to and calculate dead weight capacity, make comparisons and judge whether with the dead weight capacity of setting and overload, if the weight while hummer of overload demonstration overload begins to report to the police.The utility model can improve the accuracy that automobile overload detects, and saves detection time, improves the carload lot detection efficiency, shortens carload lot detection time.Have characteristics such as the result is accurate, circuit simple, be convenient to install, cost is low.
Description of drawings
Fig. 1 is structure connection layout of the present utility model.
Fig. 2 is workflow diagram of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment
Defer to technique scheme, as shown in Figure 1, a kind of SCM Based overload of vehicle pick-up unit of the present utility model, comprise single-chip microcomputer, also comprise the acquisition module, communication module, watchdog module, display module, alarm lamp and the hummer that are connected with single-chip microcomputer respectively, wherein, described acquisition module comprises sensor, amplifier and the A/D converter that connects successively; Described communication module comprises the RS-485 chip; Described watchdog module comprises monitoring chip; Described display module comprises interface chip and the light-emitting diode display that is connected with interface chip respectively and keyboard.
The utility model adopts the AT89C51 single-chip microcomputer as the control core.The setting of the I/O pin of 51 series and use are very simple, when this pin is done the input pin use, need only be set to high level by this pin.With 51 series A T89C51 single-chip microcomputers, circuit is greatly simplified, and program write and solidify also quite convenient, flexibly.
Watchdog module comprises the MAX813L monitoring chip, and MAX813L is powering up, the output that resets arranged under power down and the supply voltage decline situation.Utilize the MAX813L chip, watchdog circuit, power fail monitoring circuit and manual, the automatic reset circuit of Single Chip Microcomputer (SCM) system have been realized, " deadlock " phenomenon of settlement procedure emerged in operation and adverse effect that power fail brings effectively are in order to preserve data in time.
Communication module comprises the RS-485 chip, and the utility model adopts the MAX485 chip, and this chip is a kind of RS-485 chip of Maxim company, low-power consumption and have higher antijamming capability.
Display module comprises interface chip, light-emitting diode display and keyboard, and wherein interface chip is the 8255A interface chip, and keyboard comprises at least 10 little square toes switches, and the driver can import amount charge material amount by keyboard, and deposits numerical value in processor by 8255A.
Acquisition module comprises bridge-type LOAD CELLS WPL110, amplifier Op07, A/D converter TLC0838.Bridge-type LOAD CELLS WPL110 has value, anti-bias load energetically, and the combination pressure head has and automatically resets and the aligning function.High precision, low effect, hermetically sealedly be applicable to all kinds of rugged surroundings.The Op07 chip is a kind of low noise, single operational amplifier integrated circuit of non-chopper-zero-stabilized.Many application scenarios do not need extra zeroing measure.OP07 has the low and high characteristics of open-loop gain of input bias current simultaneously, and the characteristic of this low imbalance, high open-loop gain makes OP07 be specially adapted to the aspects such as feeble signal of measuring equipment and the amplification sensor of high-gain.TLC0838 can be converted into digital signal with amplification voltage signal and flow to processor.
Alarm lamp is the LED lamp, forms alarm module with hummer, and when overload of vehicle, device sends instruction to alarm module, the flicker of LED lamp, and hummer yowls simultaneously.
With reference to figure 2, workflow of the present utility model is as follows:
After installing electrification reset, check earlier whether the power down sign is arranged, if having, then call the recovery parametric subroutine data after protecting are recovered, system initialization comprises port, 8255A interface chip, watchdog module etc. then; If there is not the power down sign just directly to carry out initialization.After the program initialization, check setting value; After checking out, image data.Bridge-type LOAD CELLS WPL110 detects the gravity of vehicle and converts thereof into voltage signal, and with the form output of detected data with potential pulse.Because the voltage ratio of output is fainter, the Op07 chip amplifies pulse signal, and TLC0838 can be converted into digital signal with amplification voltage signal and flow to central processing unit then.Signal is arranged the into internal memory of main control chip by decoding, and then operation single-chip microcomputer pre-set gravity transcode is converted into it vehicle actual pay load M again, shows by light-emitting diode display.Actual pay load M and driver before compare by the nominal load capacity Mm of keyboard locking, and dead weight capacity is during less than the nominal load capacity set, and vehicle loading is normal; When dead weight capacity is higher than the nominal load capacity of setting, judge automobile overload, single-chip microcomputer sends execution command to alarm module.Alarm lamp flicker this moment, hummer yowls, and plays the effect of warning; Meanwhile, single-chip microcomputer regularly transmits large batch of sampled data to upper PC by communication module, backs up.
Claims (9)
1. SCM Based overload of vehicle pick-up unit, comprise single-chip microcomputer, it is characterized in that, also comprise the acquisition module, communication module, watchdog module, display module, alarm lamp and the hummer that are connected with single-chip microcomputer respectively, wherein, described acquisition module comprises sensor, amplifier and the A/D converter that connects successively; Described communication module comprises the RS-485 chip; Described watchdog module comprises monitoring chip; Described display module comprises interface chip and the light-emitting diode display that is connected with interface chip respectively and keyboard.
2. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described single-chip microcomputer adopts the AT89C51 single-chip microcomputer.
3. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described sensor adopts WPL110 bridge-type LOAD CELLS.
4. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described amplifier adopts the OP07 amplifier.
5. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described A/D converter adopts the TLC0838 converter.
6. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described RS-485 chip adopts the MAX485 chip.
7. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described monitoring chip adopts the MAX813L chip.
8. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described alarm lamp adopts the LED lamp.
9. SCM Based overload of vehicle pick-up unit as claimed in claim 1 is characterized in that, described interface chip adopts the 8255A chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653982 CN203037330U (en) | 2012-11-29 | 2012-11-29 | Vehicle overload detection device based on single-chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653982 CN203037330U (en) | 2012-11-29 | 2012-11-29 | Vehicle overload detection device based on single-chip microcomputer |
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| Publication Number | Publication Date |
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| CN203037330U true CN203037330U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220653982 Expired - Fee Related CN203037330U (en) | 2012-11-29 | 2012-11-29 | Vehicle overload detection device based on single-chip microcomputer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054868A (en) * | 2016-08-12 | 2016-10-26 | 北京车和家信息技术有限责任公司 | Finished vehicle controller and vehicle |
| CN106627138A (en) * | 2016-11-29 | 2017-05-10 | 翁选龙 | Truck overload limiting system |
| CN106644008A (en) * | 2016-11-14 | 2017-05-10 | 上海电机学院 | Multi-function vehicle-mounted overload monitoring system |
| CN107458235A (en) * | 2017-08-16 | 2017-12-12 | 合肥向宇互联网科技有限公司 | Electric car overload self-power-off system |
-
2012
- 2012-11-29 CN CN 201220653982 patent/CN203037330U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054868A (en) * | 2016-08-12 | 2016-10-26 | 北京车和家信息技术有限责任公司 | Finished vehicle controller and vehicle |
| CN106644008A (en) * | 2016-11-14 | 2017-05-10 | 上海电机学院 | Multi-function vehicle-mounted overload monitoring system |
| CN106627138A (en) * | 2016-11-29 | 2017-05-10 | 翁选龙 | Truck overload limiting system |
| CN106627138B (en) * | 2016-11-29 | 2019-03-01 | 翁选龙 | A kind of bogie overload limitation system |
| CN107458235A (en) * | 2017-08-16 | 2017-12-12 | 合肥向宇互联网科技有限公司 | Electric car overload self-power-off system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131129 |