CN2085748U - Alarm for displaying loading capacity of vehicle - Google Patents
Alarm for displaying loading capacity of vehicle Download PDFInfo
- Publication number
- CN2085748U CN2085748U CN 90209485 CN90209485U CN2085748U CN 2085748 U CN2085748 U CN 2085748U CN 90209485 CN90209485 CN 90209485 CN 90209485 U CN90209485 U CN 90209485U CN 2085748 U CN2085748 U CN 2085748U
- Authority
- CN
- China
- Prior art keywords
- vehicle
- bridge
- direct current
- display alarm
- capacity display
- 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.)
- Withdrawn
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model provides an alarm for displaying loading capacity of vehicle which is a loading monitoring device of vehicle, composed of an electric resistance strain gauge and an integral electronic component. The utility model uses the ' principle and technique of electrical resistance strain gage ', to convert the capacity to an electrical signal; after enlarged and processed the signal displays the actual capacity by a display instrument. When the actual capacity exceeds the prescribed value, the audible and visible alarm can be sent out, to provide a scientific monitoring means of vehicle carrying capacity for the vehicle driver and the control people. The utility model can prevent overloading drive of the vehicle, ensure the vehicle is in the normal technical condition, and increase driving safety of the vehicle.
Description
The utility model belongs to the electrical application technology field.
Up to now, on the various load-carrying vehicles, also there is not a kind of measurement display instrument that uses, can in time, promptly demonstrate the actual payload of goods on vehicle for navigating mate of direct mount in its operator's compartment.In order to know the actual payload of goods on vehicle, way in the past is: goods is weighing on platform scale earlier before the entrucking, write down carrying capacity, and then goods is installed to vehicle get on, or goods is installed to car get on, then car is reached large-scale metering outfit and get on, for example, reach " ground weigher " scale that gets on and go out total amount, shed behind the goods again that scale goes out dead weight of vehicle, deduct dead weight of vehicle and draw the goods actual weight by gross weight.When this traditional way had both been taken a lot of work, be equipped with large-scale metering outfit again.In communications and transportation cause growing today,, necessarily require vehicle to overload and travel in order to ensure traffic safety.Therefore need be to the loaded-up condition supervision and check at any time of vehicle, as obviously unrealistic with traditional way.
Task of the present utility model provide a kind of utilize resistance strain gage come its load-bearing steel plate produces behind the measuring vehicle lade flexural deformation corresponding cause should be engaged in changing actual weight that demonstrates goods on the vehicle in real time and the instrument that can realize overload warning.
The basic functional principle of this instrument is to utilize " resistance-strain principle and technology ", and the direct current bridge load carrying ability of being made up of resistance strain gage converts electric signal to, then signal is handled, is amplified, and demonstrates actual measurement weight (AMW) with display instrument again.Specifically, check the direct current bridge of signal by DC regulated power supply, amplifier, displaying alarm five parts are formed.On the left and right main load-bearing steel plate B in the rear portion that two semi-bridge type resistance strain gages of detection signal stick on vehicle respectively.When goods installed on the car, the weight P of goods made the main load-bearing steel plate of vehicle produce flexural deformation, and two semi-bridge type resistance strain gages that stick on the main load-bearing steel plate have produced corresponding strain.And produced the output electric signal U that is directly proportional with cargo weight accordingly by the direct current bridge that strain-gauge is formed
0This U
0After amplifying circuit amplifies, demonstrate corresponding weight by display instrument (digital or analog meter).If loaded weight surpasses specified value, then send alerting signal (can be sound and optic signal) by warning circuit, submit to navigating mate to note.
Because the temperature of environment always changes when measuring, the electric resistance humidity effect (resistance wiry changes with variation of temperature) that this variation certainly leads to the resistance strain gage sensitive grid with and different with the linear expansion factor of hard ware (steel plate), its resistance is changed, thereby cause measured error.For this reason, must manage to take measures to eliminate this influence.Promptly utilize the transverse strain sheet RC of semi-bridge type resistance strain gage to realize temperature compensating in the utility model, improved survey precision, because semi-bridge type resistance can not be done equally fully at the change sheet during fabrication, and its resistance also will change after pasting.Therefore when vehicle was in complete zero load, electric bridge still might be exported non-vanishing.In order to make vehicle corresponding acquisition zero indication when the zero load, so a zero level device W is set on electric bridge
2And resistance R
9, regulate W
2Just can make vehicle when zero load, be shown as zero.
When lade, along with vehicle master load-bearing steel plate produces flexural deformation, the output terminals A of electric bridge, C should have output signal U mutually
0:
U
0＝ 1/4 EK（ε
1＋ε
2）
In the formula: E ┄ electric bridge power supply voltage (V)
The sensitivity coefficient of K ┄ resistance strain gage
ε
1, ε
2┄ is respectively the response so the U of the longitudinal strain sheet in the half-bridge resistance strain gage
0With (ε
1+ ε
2) be directly proportional, but because U
0Numerical value very little, must after amplifying, could show, so adopted a kind of " ultralow drift chopper-zero-stabilized monolithic integrated operational amplifier " IC in the line
4Amplify usefulness as direct current signal.
The utility model provides a kind of accurately reliable for vehicular drive personnel and vehicle supervisor, and can reflect and show the instrument of vehicle actual payload rapidly.This instrument is directly installed in the operator's compartment of vehicle, vehicle actual weight of goods as can be known immediately behind lade, and can inform and overload? what is overload? if the serious load carrying ability that surpasses regulation, it can send sound and optic signal, in time remind the vehicular drive personnel to arouse attention, and take the necessary measures, thereby can prevent that overload of vehicle from travelling, make vehicle remain on normal state of the art.Because vehicle the time has been considered only to travel under rated load, nominal load in design, its starting, quicken, turn to, climb, technical performance such as braking just can be guaranteed.And under the overload situation, particularly under serious overload situation, travelling, its relevant every technical performance be difficult to guaranteed.For example, the vehicle start difficulty, quicken slowly, turn to dumbly, it is gruelling to climb, and especially when emergency braking, occurs brake failure probably, causes to lose control of one's vehicle, and the major reason of train operation accident takes place often.So guarantee that vehicle travels under the volume load, can improve the traffic safety of vehicle, in the service life that can also improve vehicle, road, bridge simultaneously, the traffic potential of raising road, bridge is increased work efficiency.Therefore, device " vehicle capacity display alarm instrument " has great economic benefit and social benefit on various load-carrying vehicles.
Fig. 1 is a vehicle capacity display alarm instrument work block diagram.The direct current bridge R, the amplifier W that divide DC regulated power supply DW, detection signal
3, read out instrument W
4, warning device W
5Form.
Fig. 2 is a semi-bridge type resistance strain gage structural representation.It is by transverse strain sheet R
C, longitudinal strain sheet R
X, substrate M, connection terminal L constitutes, wherein R
CBe used for realizing temperature compensating.
Fig. 3 is the direct current bridge scheme circuit that two semi-bridge type resistance strain gages constitute.Bridge power supply E is obtained through after the voltage stabilizing by automotive battery.Two vertical, horizontal strain-gauge R
X, R
CBe to intersect and connect.
To be the semi-bridge type resistance strain gage hold stickup scheme drawing on the steel plate, A portion enlarged drawing the automobile master to Fig. 4.
Fig. 5 is a vehicle capacity display alarm instrument electrical schematic diagram.Its job procedure is such: automobile battery inserts this instrument through K switch, for preventing in the storage battery use voltage fluctuation is arranged, adopts three-terminal voltage-stabilizing device IC
1, integrated operational amplifier IC
2, transistor T
1, stabilivolt DW, capacitor C
1～C
6, resistance R
1～R
4Form the secondary voltage stabilizing, to suppress the extraneous interference signal, again because instrument signal amplify and overload alarm two aspect all need to provide power supply, so adopted integrated operational amplifier IC in the circuit
3, transistor T
2, T
3, potential device W
1, capacitor C
7～C
9, resistance R
5～R
8, convert single power supply to symmetrical positive and negative dual power supply.Direct current bridge is by two groups of transverse strain sheet R
C1, R
C2, R
X1, R
X2Be formed by connecting.Signal amplification factor can be by potential device W
3Regulate.Signal after the amplification is by IC
410 pin output.At IC
4Mouth (10 pin), can adopt digital or analog meter shows.Regulator potentiometer W not only can make carrying capacity consistent with displayed value, and can utilize W to come range extension, thereby the vehicle that goes for different tonnages uses.Warning circuit is by IC
5, R
14, the D voltage comparator, the T that constitute
4, T
5, R
5～R
20, C
2The smit circuit and LED L, LEDH, the buzzer phone FM that constitute form.Regulator potentiometer W
5Turnover voltage that can the regulating voltage comparator, in fact the permission device amount of also promptly regulating vehicle is exactly to regulate the operating value of reporting to the police.When loading on rated value when following, IC
410 pin output through W
5After the dividing potential drop, IC
5The Z terminal voltage less than 3 terminal voltages, IC
5Just be output as, promptly six ends just are output as, and pass through R
10, make T
4Conducting, green LED LEDL is bright, T
5End, the expression vehicle does not transship; When overload, IC
4Output through W
5Make IC after the dividing potential drop
52 terminal voltages greater than 3 terminal voltages, IC
56 ends be output as negative, T
4End, green LED LEDL goes out, T
5Conducting, red light emitting diodes LEDH is bright, and simultaneously, buzzer FM sends the sound, submits to navigating mate to note.Therefore, by regulating W
5Can obtain needed alarming value.
The electric bridge of this instrument, demonstration and warning partial reequipping can be used as vehicle capacity balance indicator alarm.
Claims (5)
1, vehicle capacity display alarm instrument is by automotive battery DC DC regulated power supply DW, detection signal direct current bridge R, signal amplifier W
3, read out instrument W
4With warning device W
5Five parts are formed, of the present utility model being characterised in that:
1) DC regulated power supply DW is by two utmost point voltage stabilizings, and positive and negative symmetric double power supply constitutes;
2) the direct current bridge R of detection signal is by two semi-bridge type resistance strain gage R
X1, R
C6, R
X2, R
C2Be to intersect to link and form, and stick on respectively on the left and right vehicle wheel master load-bearing steel plate.
2, vehicle capacity display alarm instrument according to claim 1 is characterized in that, two semi-bridge type resistance strain gages of direct current bridge R are respectively by substrate M connection terminal L, longitudinal strain sheet R
X, temperature compensating transverse strain sheet R
CConstitute.
3, vehicle capacity display alarm instrument according to claim 2 is characterized in that being provided with on the direct current bridge R electric bridge a unloaded zero potentiometer W
2
4, vehicle capacity display alarm instrument according to claim 1 is characterized in that amplifier W has adopted " ultralow drift chopper-zero-stabilized monolithic integrated operational amplifier " IC
4Circuit.
5, vehicle capacity display alarm instrument according to claim 1 is characterized in that warning device W
5By the voltage comparator smit circuit, LED L, LEDH, buzzer FM, potential device W
5Form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209485 CN2085748U (en) | 1990-06-27 | 1990-06-27 | Alarm for displaying loading capacity of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209485 CN2085748U (en) | 1990-06-27 | 1990-06-27 | Alarm for displaying loading capacity of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085748U true CN2085748U (en) | 1991-10-02 |
Family
ID=4889548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209485 Withdrawn CN2085748U (en) | 1990-06-27 | 1990-06-27 | Alarm for displaying loading capacity of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085748U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859526A (en) * | 2015-06-10 | 2015-08-26 | 徐州徐工施维英机械有限公司 | Weighing device and concrete mixer |
| CN105825620A (en) * | 2015-01-09 | 2016-08-03 | 任丘市永基建筑安装工程有限公司 | Steel arch bridge overload automatic alarming device |
| CN108196550A (en) * | 2018-02-08 | 2018-06-22 | 广东工业大学 | A kind of automatic guiding carriage and its autocontrol method |
-
1990
- 1990-06-27 CN CN 90209485 patent/CN2085748U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825620A (en) * | 2015-01-09 | 2016-08-03 | 任丘市永基建筑安装工程有限公司 | Steel arch bridge overload automatic alarming device |
| CN104859526A (en) * | 2015-06-10 | 2015-08-26 | 徐州徐工施维英机械有限公司 | Weighing device and concrete mixer |
| CN108196550A (en) * | 2018-02-08 | 2018-06-22 | 广东工业大学 | A kind of automatic guiding carriage and its autocontrol method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105788251B (en) | Overloading wagon real-time monitoring system and method based on Big Dipper car networking | |
| US4456084A (en) | Vehicle load monitoring system | |
| CN111649812A (en) | Semi-trailer vehicle-mounted weighing system | |
| CN106627138B (en) | A kind of bogie overload limitation system | |
| US3283838A (en) | Apparatus and method for computing equivalent weight of tractor trailer vehicle | |
| CN214471261U (en) | High measurement accuracy semitrailer vehicle-mounted weight detection system | |
| CN101350136A (en) | Method for dynamically detecting wagon bias loading and alarm system thereof | |
| CN106840335A (en) | Split type removable wagon weighing machine and the method weighed with it | |
| CN111964765A (en) | High measurement accuracy semitrailer vehicle-mounted weight detection system | |
| CN2085748U (en) | Alarm for displaying loading capacity of vehicle | |
| CN105628396A (en) | Automobile parking braking road test examination automatic determination system and use method thereof | |
| CN203464988U (en) | Dynamic vehicle weighing and speed detection device | |
| CN215114810U (en) | Vehicle-mounted weighing system | |
| CN106644011A (en) | On-board weighing system | |
| CN110455385A (en) | A kind of vehicle-mounted leaf spring weighing sensor | |
| JPS6363924A (en) | Automobile with load weight measuring apparatus | |
| CN105253019B (en) | A kind of cargo vehicle axle load method of real-time and device | |
| CN212150281U (en) | Garbage truck self-checking load system | |
| CN201302478Y (en) | Portable automobile weighting machine | |
| CN113066297A (en) | Semi-trailer vehicle-mounted weighing system suitable for main and auxiliary leaf springs | |
| CN1952626A (en) | Vehicular weighing digital measurer | |
| CN2078244U (en) | Loading capacity balance indicator alarm for vehicle | |
| CN218297348U (en) | Real-time weighing system of vehicle | |
| CN202885935U (en) | Device for testing running axle load of passenger car | |
| CN101660938A (en) | Automobile axle load indicator and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |