CN102126461A - Dedicated sensing device for vehicle drop dregs - Google Patents
Dedicated sensing device for vehicle drop dregs Download PDFInfo
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- CN102126461A CN102126461A CN 201110022796 CN201110022796A CN102126461A CN 102126461 A CN102126461 A CN 102126461A CN 201110022796 CN201110022796 CN 201110022796 CN 201110022796 A CN201110022796 A CN 201110022796A CN 102126461 A CN102126461 A CN 102126461A
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Abstract
The invention provides a dedicated sensing device for vehicle drop dregs. The device comprises four pressure sensors (the bearing weight is more than the weight of a vehicle body) arranged at the bottom of a vehicle carriage, wherein the four pressure sensors are respectively connected with an RS485 interface through a data processing circuit, and are connected with a microprocessor through the RS485 interface. The device has the advantages that: weight changes of the vehicle can be accurately determined through the four pressure sensor chips by signal amplification and calculation; and the result is connected with a wireless transmission module through the RS485 interface so as to realize data wireless transmission. The device can automatically sense the incident of vehicle drop dregs by sensing the real-time change of the vehicle load, and records the particular position of the vehicle drop dreg by triggering a global positioning system (GPS) and other devices so as to provide scientific basis for supervision and accountability in the urban management process.
Description
Technical field
The present invention relates to a kind of electronics sensing device, especially a kind of vehicle falls dregs dedicated sense device.
Background technology
The task of transformation, the new construction of each various building ground, large, medium and small city, the whole nation is various day by day, the characteristics that the building ground presents is wide, amount is big, point is many, and the dregs in a lot of building sites need transport outward by vehicle.Most vehicles need become the unavoidable fact through the main trunk road in city, and vehicle falls the important hidden danger that the dregs incident day by day becomes influences city PE health.And currently can locate, follow the trail of the running route of vehicle fully by technology such as GPS, and can only check artificially, lock by the supervision of the cities video recording at present and fall the dregs incident for vehicle, also lack a kind of weather-proof, discovering device automatically.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of vehicle to fall dregs dedicated sense device, specifically fall the real-time perception of dregs incident at city vehicle, exactly be a kind of by the initial load-carrying of pressure sensor real-time perception vehicle and the variation of load-carrying, when the difference generation significant change of the real-time load-carrying of finding vehicle and " net weight " of vehicle, just illustrating has dregs to be scattered.
According to technical scheme provided by the invention, described vehicle falls dregs dedicated sense device and comprises: 4 pressure sensors (load capacity surpasses tare) that are arranged on the vehicle car bottom, pressure sensor, 4 pressure sensors connect the RS485 interface by data processing circuit respectively, connect microprocessor by described RS485 interface again.
Described data processing circuit comprises measuring bridge and differential amplifier, described measuring bridge comprises end to end first resistance, second resistance, the 3rd resistance, replaceable resistance, the connecting joint of replaceable resistance and the 3rd resistance are connected first mouth of pressure sensor and the first input end of differential amplifier, the connecting joint of first resistance and second resistance are connected second mouth of pressure sensor, second input end of differential amplifier and the sliding end of adjustable resistance, the connecting joint of second resistance and the 3rd resistance are connected and connect an end of adjustable resistance with-1V level, the connecting joint of first resistance and replaceable resistance are connected and connect the other end of adjustable resistance with+4V level, and the mouth of differential amplifier connects described RS485 interface.
Described microprocessor is micro controller system 89C2051, also can be DSP, ARM etc. theoretically.
As preferably, described microprocessor is connected with the GPS device interface.Described 4 pressure sensors are installed in four jiaos on chassis, compartment respectively.Described microprocessor is connected with wireless transport module by the RS485 interface simultaneously.
Advantage of the present invention is: by 4 pressure sensor chips, amplify and calculating through signal, realize the vehicle weight variation is judged accurately; The result can be connected with wireless transport module by the RS485 interface simultaneously, realizes the transmission over radio of data.Device is by the real-time change of perception vehicle load, and energy perception vehicle automatically fall the dregs incident, and by devices such as triggering GPS, notes the particular location that vehicle falls dregs, for the supervision of the vehicle in the city management process, responsibility pursuit provide scientific basis.
Description of drawings
Fig. 1 is one group of pressure sensor and data processing circuit schematic diagram.
Fig. 2 is a lower computer processing links scheme drawing.
Fig. 3 is a scheme of installation of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention's energy real-time perception vehicle falls the actual conditions and the particular location of dregs, the situation of change of initial load-carrying by the pressure sensor registration of vehicle and load-carrying in real time, when the difference of the real-time load-carrying of finding vehicle and initial load-carrying changes, just explanation has dregs to be scattered, and this is a main guiding theory of the present invention.The signal that this device is gathered by 4 pressure sensors, by the signal amplifier amplifying signal and carry out technical finesse, result realizes the dynamic monitoring to vehicle dregs weight with the RS485 interface output of standard.Concrete technical scheme is as follows.
⑴ respectively install a pressure sensor for four jiaos in the bottom of vehicle car, the end of perception foremost that these four pressure sensors are perception vehicle loads as shown in Figure 3.The universal pressure transformer of PRC-902 that pressure sensor selects for use Hangzhou profit occasion Science and Technology Ltd. to produce, this pressure transformer carries built-in treatment circuit, output has converted electric signal to, and the output electric signal is handled through data processing circuit again, outputs to the RS485 interface again.The circuit of each road sensor connects as shown in Figure 1.
(2) parameter that collects is converged to an advance data treatment circuit, and uniform data is write 485 interfaces of standard by simple pretreatment, for later on as micro controller system, DSP equipment or ARM equipment etc. connect spare interface, this micro controller system, DSP equipment or ARM wherein conveniently is referred to as lower computer for what explain; At the lower computer of operator's compartment appropriate location sensor installation, by wired connection sensor and lower computer.As shown in Figure 2,4 pressure sensors connect the RS485 interface by data processing circuit respectively, connect microprocessor by described RS485 interface again.4 groups of pressure datas enter four data ports of microprocessor respectively.Microprocessor can also be connected with wireless transport module by the RS485 interface, realizes the transmission over radio of data, or connects the device of other bands RS485 interface.
As shown in Figure 1, described data processing circuit comprises measuring bridge and differential amplifier, described measuring bridge comprises end to end first resistance R 1, second resistance R 2, the 3rd resistance R 3, replaceable resistance R x, the connecting joint of replaceable resistance R x and the 3rd resistance R 3 are connected the mouth of pressure sensor and the first input end of differential amplifier, first resistance R 1 is connected the mouth of pressure sensor with the connecting joint of second resistance R 2, second input end of differential amplifier and the sliding end of adjustable resistance Rw, the connecting joint of second resistance R 2 and the 3rd resistance R 3 are connected and connect the end of adjustable resistance Rw with-1V level, the connecting joint of first resistance R 1 and replaceable resistance R x are connected and connect the other end of adjustable resistance Rw with+4V level, the mouth of differential amplifier connects described RS485 interface, exports one group of pressure data.
Electric signal that pressure sensor collects is as the input of the measuring bridge of being made up of resistance R 1, R2, R3 and Rx, R1 wherein, and R2, R3 are permanent resistor, R
XBe interchangeable resistance.Variable resistance Rw mainly is in order to regulate the threshold value of measuring bridge output voltage, and the output voltage of measuring bridge is as the input of differential amplifier, and the output of differential amplifier is through the input of peripheral circuit as Fig. 2 micro controller system.
As shown in Figure 2, be example with the 89C2051 micro controller system, the digital signal after the peripheral circuit A/D conversion of the output process 89C2051 micro controller system of every group of differential amplifier is as the input of micro controller system, and four groups are inserted P respectively altogether
1.0, P
1.1, P
1.2And P
1.3Four data ports, the data processor on the micro controller system calculates the data that four input ends collect; The P of micro controller system
2.1Pin when finding vehicle load generation significant change by calculating, just triggers interrupt signal as the trigger end of interrupt signal, and the RS485 port output of alarm message by standard.
⑶ write unified lower computer initialize routine, and it mainly acts on is to gather the also net weight of initialization vehicle, is designated as m, and this net weight value is retained in the lower computer.So-called net weight is meant vehicle when zero load, the railway carriage weight that sensor collected.
⑷ vehicle-mounted lower computer is read once the data of RS485 interface every 5 clocks, a maxim noting preceding 30 minutes within (think can finish dregs within 30 minutes load), and think that this value is exactly the whole car weight that loads behind the dregs, and be designated as M, equally this M is retained in the lower computer.
Vehicle falls the load-carrying data of dregs dedicated sense device by two stages of pressure sensor collection vehicle, vehicle load data when promptly this device being installed just and the vehicle load data after 40 minutes are because find that by statistics vehicle has been finished the dregs loading within 40 minutes generally speaking.
⑸ device just thinks have dregs to be scattered by the load-carrying variation of real-time perception vehicle and the difference △ m of calculating M and m when △ m surpasses certain threshold value.
Reside in another part handler in the lower computer, before vehicle load is changed to vehicle dry weight m again (becoming m explanation dregs is again outwelled), continue calculated difference △ m, when the variation range of △ m=M-m has surpassed certain threshold value, just explanation has dregs to drop, and this incident can trigger as the interrupt source in the micro controller system etc.
Residing in vehicle " net weight " on the lower computer, to gather initialize routine be that this device part is being installed, and device in case power on moves automatically and the net weight m of vehicle is gathered automatically and keeps, and not disturbed by any external factor.
⑹ vehicle falls the special purpose interface that dregs dedicated sense device is reserved with GPS, can be with popular on the market GPS device seamless link.
Connect the GPS device interface at described microprocessor, then said apparatus can integrated GPS global location device, the energizing signal of above-mentioned interrupt source as a GPS, note the particular location that vehicle load changes by GPS, so just finished the real-time positioning that vehicle falls dregs.
Claims (6)
1. vehicle falls dregs dedicated sense device, it is characterized in that comprising: be arranged on 4 pressure sensors of vehicle car bottom, 4 pressure sensors connect the RS485 interface by data processing circuit respectively, connect microprocessor by described RS485 interface again.
2. vehicle falls dregs dedicated sense device according to claim 1, it is characterized in that described data processing circuit comprises measuring bridge and differential amplifier, described measuring bridge comprises end to end first resistance (R1), second resistance (R2), the 3rd resistance (R3), replaceable resistance (Rx), the connecting joint of replaceable resistance (Rx) and the 3rd resistance (R3) are connected first mouth of pressure sensor and the first input end of differential amplifier, first resistance (R1) is connected second mouth of pressure sensor with the connecting joint of second resistance (R2), the sliding end of second input end of differential amplifier and adjustable resistance (Rw), the connecting joint of second resistance (R2) and the 3rd resistance (R3) are connected and connect an end of adjustable resistance (Rw) with-1V level, the connecting joint of first resistance (R1) and replaceable resistance (Rx) are connected and connect the other end of adjustable resistance (Rw) with+4V level, and the mouth of differential amplifier connects described RS485 interface.
3. vehicle falls dregs dedicated sense device according to claim 1, it is characterized in that described microprocessor is micro controller system, DSP or ARM.
4. vehicle falls dregs dedicated sense device according to claim 1, it is characterized in that described microprocessor is connected with the GPS device interface.
5. vehicle falls dregs dedicated sense device according to claim 1, it is characterized in that described 4 pressure sensors are installed in four jiaos on chassis, compartment respectively.
6. vehicle falls dregs dedicated sense device according to claim 1, it is characterized in that described microprocessor is connected with wireless transport module by the RS485 interface simultaneously.
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| CN 201110022796 CN102126461A (en) | 2011-01-20 | 2011-01-20 | Dedicated sensing device for vehicle drop dregs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110022796 CN102126461A (en) | 2011-01-20 | 2011-01-20 | Dedicated sensing device for vehicle drop dregs |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723135A (en) * | 2012-10-16 | 2014-04-16 | 胡楚阳 | Real-time control system for automobile overload |
| CN107274107A (en) * | 2017-06-30 | 2017-10-20 | 合肥贺财工程项目管理有限公司 | A kind of project under construction civil engineering dregs transports outward supervisory systems |
| CN112937666A (en) * | 2021-03-16 | 2021-06-11 | 上海海事大学 | Electronic vehicle for conveying articles |
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| EP0625697A1 (en) * | 1993-05-17 | 1994-11-23 | Hi-Tech Scales | On-board vehicle weighing system |
| CN101105408A (en) * | 2007-05-31 | 2008-01-16 | 福州汇和现代科技有限公司 | Bias load automatic monitoring and alarm device for railway ore hopper car |
| CN201368760Y (en) * | 2009-03-13 | 2009-12-23 | 上海时焦实业发展有限公司 | Vehicle on-load alarming device |
| CN201402145Y (en) * | 2008-11-18 | 2010-02-10 | 南阳理工学院 | Analog sensor circuit |
| CN101819058A (en) * | 2009-07-23 | 2010-09-01 | 华南理工大学 | Self-service vehicle load real-time monitoring device |
| CN202024812U (en) * | 2011-01-20 | 2011-11-02 | 江苏晓山信息产业股份有限公司 | Special-purpose sensing device of vehicle dropping soil |
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2011
- 2011-01-20 CN CN 201110022796 patent/CN102126461A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0625697A1 (en) * | 1993-05-17 | 1994-11-23 | Hi-Tech Scales | On-board vehicle weighing system |
| CN101105408A (en) * | 2007-05-31 | 2008-01-16 | 福州汇和现代科技有限公司 | Bias load automatic monitoring and alarm device for railway ore hopper car |
| CN201402145Y (en) * | 2008-11-18 | 2010-02-10 | 南阳理工学院 | Analog sensor circuit |
| CN201368760Y (en) * | 2009-03-13 | 2009-12-23 | 上海时焦实业发展有限公司 | Vehicle on-load alarming device |
| CN101819058A (en) * | 2009-07-23 | 2010-09-01 | 华南理工大学 | Self-service vehicle load real-time monitoring device |
| CN202024812U (en) * | 2011-01-20 | 2011-11-02 | 江苏晓山信息产业股份有限公司 | Special-purpose sensing device of vehicle dropping soil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723135A (en) * | 2012-10-16 | 2014-04-16 | 胡楚阳 | Real-time control system for automobile overload |
| CN107274107A (en) * | 2017-06-30 | 2017-10-20 | 合肥贺财工程项目管理有限公司 | A kind of project under construction civil engineering dregs transports outward supervisory systems |
| CN112937666A (en) * | 2021-03-16 | 2021-06-11 | 上海海事大学 | Electronic vehicle for conveying articles |
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Application publication date: 20110720 |