CN202599500U

CN202599500U - Vehicle weighing system

Info

Publication number: CN202599500U
Application number: CN 201220249118
Authority: CN
Inventors: 陈朝利; 吕建春; 黄晓
Original assignee: SICHUAN MINKO ELECTR-MECHANIGAL ENGINEERING CO LTD
Current assignee: SICHUAN MINKO ELECTR-MECHANIGAL ENGINEERING CO LTD
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2012-12-12
Anticipated expiration: 2022-05-30

Abstract

The utility model discloses a vehicle weighing system which comprises two rows of quartz sensors and a row of blend board sensors, wherein the two rows of quartz sensors and the row of blend board sensors are paved on a driveway; each blend board sensor is arranged between the two rows of quartz sensors; once a vehicle crosses the road with a weighing sensor at an intermediate-high speed, the weight of the vehicle can be calculated based on a signal from the quartz piezoelectric sensor; once the vehicle runs at a low speed, the weight of the vehicle can be calculated based on the signal from the blend board sensor; the blend board sensor with relatively high static property is additionally arranged based on original quartz sensor, so that static weighing can be achieved based on the ensured dynamic weighing; and the complementary modes can improve the weighing precision of weighing equipment under a state that the vehicle crosses at a relatively low speed (static state), and thus various technical indexes can be stable and reliable.

Description

A kind of vehicle weighing system

Technical field

The utility model relates to the field of weighing, and relates in particular to a kind of vehicle weighing system.

Background technology

Existing vehicle dynamic is weighed and is generally adopted quartz transducer that the track is covered; Detect pressure and speed by quartz transducer through each road pavement of vehicle on it; Calculate each weight and the complete vehicle weight of this car then with embedded computer, quartz transducer belongs to part and carries LOAD CELLS.Its computing formula is:

Axle weight=axletree speed/sensor width * piezoelectricity integral of pulse shape area * correction coefficient

Car load general assembly (TW)=each heavy sum

Can know by top formula, when vehicle hangs down through the speed of quartz transducer, can be less than normal through the axle weight that quartz transducer is measured, deviation will appear in complete vehicle weight that draws at last and actual car weight.At the uniform velocity non-or walk the S route through the sensor highway section when vehicle, can cause weighing results slightly to be worse than the bent plate sensor.Therefore only carrying out vehicle dynamic with quartz transducer in the prior art weighs and has certain limitation.

The utility model content

The purpose of the utility model provides a vehicle weighing system; When only adopting quartz transducer to measure during the solution vehicle dynamic is weighed; Because the serious problem of weighing results deviation that low speed causes; Proposed a kind of the carrying fully and claimed to carry the weighing system that LOAD CELLS combines, can be implemented in dynamically with under static two kinds of situation and weigh preferably with part.

To achieve these goals, the utility model provides a kind of vehicle weighing system, and said system comprises that being laid on the row's quartz transducer of two on the track and arranges the bent plate sensor, and the bent plate sensor is arranged between said two row's quartz transducers.

Wherein, every row's quartz transducer comprises two quartzy piezoelectric sensors, and two quartzy piezoelectric sensors in every row's quartz transducer are horizontally installed on left-hand lane and right-hand lane respectively;

Described row's bent plate sensor comprises two bent plate sensors, and two bent plate sensors are horizontally installed on left-hand lane and right-hand lane respectively.

Preferably, the distance range between two row's quartz transducers is 1000mm-1300mm.

Preferably, the wide of said bent plate sensor is 300mm-500mm.

Compared with prior art, the utlity model has following beneficial effect:

The utility model adopts quartz transducer and bent plate sensor to combine, when vehicle passes through with high speed, and the calculated signals vehicle weight that transmits according to quartz transducer; And when low speed; According to bent plate sensor data computation vehicle weight,, realized static weighing satisfying on the basis that dynamically meter is heavy; The complimentary fashion that both combine has improved meter and has reseted the heavy precision of meter of passing through state fully at vehicle utmost point low speed, makes each item technical indicator more stable, reliable.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings:

Fig. 1 is the paving location synoptic diagram of LOAD CELLS in the utility model embodiment vehicle weighing system.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

Except satisfying dynamically, need also must satisfy static weighing requirement important the asking of meter owing to consider domestic part province weight metering charging system; For this reason; The utility model has increased the static characteristics wide bent plate sensor of strain-type preferably on quartz crystal LOAD CELLS basis; Complimentary fashion raising so that both combine is reseted fully in count the heavily precision of vehicle utmost point low speed through state; Make each item technical indicator more stable, reliable, when having solved vehicle dynamic and only adopting quartz transducer to measure in weighing, because the weighing results deviation serious problems that low speed causes.

The utility model vehicle weighing system comprises being laid in the weight metering charging track, row's quartz transducer and row's bent plate sensor apart from tollbooth 18m to two between the 24m, and the bent plate sensor is arranged between said two row's quartz transducers.

Referring to Fig. 1; Paving location synoptic diagram for LOAD CELLS in the utility model embodiment vehicle weighing system; LOAD CELLS comprises that being laid on the quartzy piezoelectric sensor of row of two on the track and arranges the bent plate sensor in the present embodiment, and the bent plate sensor is arranged between the quartzy piezoelectric sensor of said two rows.The quartzy pressure transmission inductor of every row comprises two quartzy piezoelectric sensors, the length of every quartzy piezoelectric sensor can for the lane width value 2/5-3/5 between.Like Fig. 1; Quartzy piezoelectric sensor C1, C2 form the quartzy piezoelectric sensor of first row; C1 is horizontally installed on left-hand lane; C2 is horizontally installed on right-hand lane, can be provided with between C1 and the C2 one little staggered, C1 and C2 are staggered front to back spacing L1 span and are :-200mm ~ 200mm (direction of traffic for just); Quartzy piezoelectric sensor C3, C4 form the quartzy piezoelectric sensor of second row; C4 is horizontally installed on left-hand lane; C3 is horizontally installed on right-hand lane; Can be provided with between C3 and the C4 one little staggered, C3 and C4 are staggered front to back spacing L3 span and are :-200mm ~ 200mm (direction of traffic for just); Middle row's bent plate sensor comprises two bent plate sensor C5 and C6; Article two, the bent plate sensor is horizontally installed on left-hand lane and right-hand lane respectively; And make when vehicle passes through this track; Revolver is pressed on the sensor that is positioned at left-hand lane, and right pressure wheel also can be provided with little interlocking between C5 and the C6 on the sensor that is positioned at track, the right; C5 and C6 are staggered front to back spacing L2 span :-200mm ~ 200mm (direction of traffic for just), the length of every bent plate sensor can for the lane width value 2/5-3/5 between.

Distance range among the utility model embodiment between the quartzy piezoelectric sensor of two rows can be 1000mm-1300mm; The bent plate sensor can be arranged on the position, middle between the quartzy piezoelectric sensor of two rows; The wide of said bent plate sensor is 300mm-500mm, is 460mm generally speaking.The wide of common quartzy piezoelectric sensor is 70mm, and the width on the pressure wheel reversing road is about 200mm, and therefore, the bent plate sensor can carry whole wheel fully, to realize static weighing.

When vehicle passes through LOAD CELLS with the speed in the setting range; Controller carries sensor data computation vehicle weight according to carrying LOAD CELLS fully with part; Account form can be for carrying the sensor data with part and calculate a vehicle weight respectively according to carrying LOAD CELLS fully; Two vehicle weights that will calculate are then asked on average, are finally exported vehicle weight.

When vehicle passed through LOAD CELLS with the speed that is higher than the setting range upper limit, controller carried LOAD CELLS according to part and detects the data computation vehicle weight, and computing formula is:

Dynamic shaft weight=axletree speed/sensor width * piezoelectricity integral of pulse shape area * correction coefficient

Car load general assembly (TW)=each heavy sum

When vehicle passed through LOAD CELLS with the speed that is lower than the setting range lower limit, controller detected the data computation vehicle weight according to carrying LOAD CELLS fully, and computing formula is:

Static (utmost point low speed) axle weight=wave-average filtering maximal value * correction coefficient

Car load general assembly (TW)=each heavy sum

Preferably, the velocity range of said setting is 2km/h-10km/h.In general; When vehicle passes through LOAD CELLS with the speed per hour of 2km/h-10km/h; The complete vehicle weight numerical value of measuring with bent plate sensor and quartz transducer is more or less the same, and this speed per hour zone is a zone line, and a kind of measurement data that can choose arbitrarily in bent plate sensor and the quartz transducer is calculated complete vehicle weight; Scope is calculated through the data of two kinds of sensor measurements between also can be hereinto, to calculate vehicle weight more accurately.

Wherein, Piezoelectricity integral of pulse shape area calculates according to the waveform that quartzy piezoelectric sensor returns; And correction coefficient is to preset in the controller, and sensor width is stored in the controller after measuring according to actual conditions, and the width of common quartzy piezoelectric sensor is 70mm; The account form of piezoelectricity integral of pulse shape area and aforementioned calculation formula are existing common technology, do not do too much at this and give unnecessary details.

The utility model utilization is embedded in the quartzy piezoelectric sensor and the common pressure and the speed that detects through each road pavement of vehicle of the wide bent plate sensor of strain-type of highway pavement; The calculated signals vehicle weight that when high speed, transmits according to quartzy piezoelectric sensor; And when low speed; The calculated signals vehicle weight that transmits according to the bent plate sensor; Owing on the basis of former quartz transducer, increased static characteristics bent plate sensor preferably,, also realized weighing under static state or the utmost point low speed situation satisfying on the basis that dynamically meter is heavy.

Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.

Disclosed arbitrary characteristic in this instructions (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.

The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims

1. a vehicle weighing system is characterized in that, said system comprises that being laid on the row's quartz transducer of two on the track and arranges the bent plate sensor, and the bent plate sensor is arranged between said two row's quartz transducers.

2. the system of claim 1 is characterized in that:

Every row's quartz transducer comprises two quartzy piezoelectric sensors, and two quartzy piezoelectric sensors in every row's quartz transducer are horizontally installed on left-hand lane and right-hand lane respectively;

3. system as claimed in claim 2 is characterized in that, the distance range between two row's quartz transducers is 1000mm-1300mm.

4. system as claimed in claim 3 is characterized in that, the wide of said bent plate sensor is 300mm-500mm.