A kind of commercial vehicle tire pressure monitoring system of configurableizationTechnical field
The invention belongs to automobile active safety technical fields, and in particular to it is various not can be adapted to car, lorry, tractor etc.With a kind of commercial vehicle tire pressure monitoring system of configurableization of vehicle framework.
Background technique
Tire is an important component of automobile, it directly influences the driving safety of automobile.With Road Transportation VolumeBe continuously increased, caused traffic accident of blowing out every year occupies the particularly serious friendship that very big specific gravity, especially commercial vehicle causeLogical accident rate is in rising trend, and 40% accident is related to tire, and tire pressure is the key that evaluation tire working performanceIndex, the detection and maintenance work of carrying out tire are an important foundations of safety traffic.
Tire pressure monitoring system is gradually being popularized in passenger car at present, and the tire pressure monitoring system for being configured at commercial vehicle is then sent outExhibition lag, as the system for detecting tire pressure exclusively for rear dress designed by commercial vehicle heavy truck is seldom.Commercial vehicle is multiple because of its vehicle type structureMiscellaneous, wheel count is more and spacing is big, working environment is severe, causes the tire pressure monitoring system of prior art commercial vehicle generally existingTechnological deficiency is: vehicle bad adaptability, wireless signal stability is low, tyre pressure sensor is easily damaged.
Summary of the invention
For technological gap in the prior art, the object of the present invention is to provide a kind of commercial tyre pressure of configurableization prisonsExamining system, it can effectively be adapted to by configurableization of tire pressure controller and receiver tractor, tractor+trailer,The various commercial vehicle vehicle type structures such as special purpose vehicle, harmful influence vehicle and engineering truck, the tyre pressure sensor for stablizing all wheels of transmission is wirelessSignal realizes tire pressure monitoring system in the reliability service of commercial vehicle.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of commercial vehicle tire pressure monitoring system of configurableization, including power supply, at least one tyre pressure sensor (2), at leastOne tire pressure receiver and tire pressure controller；
The tyre pressure sensor is mounted on rim for automobile wheel, for carrying out real-time sampling, tire pressure to tire pressure and temperature informationSensor connects tire pressure receiver；
The tire pressure receiver is mounted on vehicle chassis, is believed for receiving the collected tire pressure of tyre pressure sensor and temperatureIt ceases and the information is transmitted to tire pressure controller by CAN network；
The tire pressure controller is separately connected each tire pressure receiver, by matching to tire pressure receiver with electric controlSet receiver quantity.
Further, the tire pressure controller includes power interface, microcontroller, receiver power supply control circuit, at leastOne receiver power supply driving circuit and receiver CAN interface, the quantity and receiver number of the receiver power supply driving circuitMeasure it is identical, and every receiver power supply driving circuit respectively with corresponding receiver connect；The power interface is separately connected micro-Controller and receiver power supply control circuit, the microcontroller are separately connected receiver power supply control circuit and receiver CANInterface, the receiver power supply control circuit are separately connected with every receiver power supply driving circuit, the CAN interface and eachTire pressure receiver (3) is separately connected.
Further, filter circuit and DC power supply transformation electricity are also set up between the power interface and microcontrollerRoad, the power interface, filter circuit, DC power supply translation circuit and microcontroller are sequentially connected.
Further, overvoltage crowbar is also set up between the filter circuit and DC power supply translation circuit, it is describedFilter circuit, overvoltage crowbar and DC power supply translation circuit are sequentially connected.
Further, the tire pressure controller further includes vehicle CAN interface, and the vehicle CAN interface connects microcontrollerDevice.
Compared with prior art, the advantages of the present invention are as follows:
(1) the commercial vehicle tire pressure monitoring system of configurableization of the invention, does optimal according to the vehicle type structure of commercial vehicleConfigurationization designs receiver quantity, configures receiver quantity with electric control to receiver using controller, reduces systemPower consumption reduces outside electromagnetic interference, it is ensured that the wireless signal that tyre pressure sensor is issued is stablized reception and transmission.The system is suitableThe matching of the vehicle framework of various commercial vehicles is answered, suitability is strong, easy to spread universal.
(2) the commercial vehicle tire pressure monitoring system of configurableization of the invention, microcontroller distribute different numbers by CAN networkThe receiver of amount respectively to carry out the tyre pressure sensor of different model the reception and transmission of wireless signal, solution while compatible twoKind tyre pressure sensor is on same vehicle and the problem of depositing.
Detailed description of the invention
Fig. 1 is the commercial vehicle tire pressure monitoring system structural schematic diagram of configurableization in embodiment 1.
Specific embodiment
Applicant is in conjunction with specific embodiments described in further details technical solution of the present invention below, so that this fieldTechnical staff may be better understood the present invention and can be practiced, but range is claimed not as the present invention in illustrated embodimentRestriction.
Embodiment 1
Since harmful influence bassinet structure is more complex, 12 signals that 3 tire pressure receivers are an actually-received are not fully effectiveOr stablize, so being used to assess the acquisition of the actual information of tire pressure state, need according to vehicle structure and signal strength reasonableWith tyre pressure sensor and tire pressure receiver, guarantee that all tyre pressure sensor wireless signals can stablize reception.
As shown in Figure 1, this system, is applied to have 12 wheels by a kind of commercial vehicle tire pressure monitoring system of configurableizationHarmful influence vehicle on, including the tire pressure receiver of tyre pressure sensor 2,3 of power supply 1,12 (respectively includes the first tire pressure receiver 3-1, second fetus presses receiver 3-2 and third tire pressure receiver 3-3) and tire pressure controller 4；Wherein power supply is that entire monitoring system suppliesElectricity.12 correspondences of tyre pressure sensor 2 are mounted on each rim for automobile wheel, for carrying out real-time sampling to tire pressure and temperature information.It is distributed according to vehicle structure and wheel, 3 tire pressure receiver flexible allocations are mounted on vehicle chassis；Wherein 12 tire pressure sensingsDevice passes through wireless network respectively and connects with the first tire pressure receiver 3-1, second fetus pressure receiver 3-2 and third tire pressure receiver 3-3It connects, i.e., each tire pressure receiver receives the tire pressure and temperature signal of 12 tyre pressure sensors transmission；3 tire pressure receivers simultaneouslyIt is all connected with tire pressure controller 4 and tire pressure and temperature information is transmitted to tire pressure controller by CAN network, also, tire pressure controlsDevice 4 configures receiver quantity with electric control also by receiver.
Specifically, tire pressure controller includes power interface 4-1, filter interface 4-10, overvoltage crowbar 4-2, direct currentSource translation circuit 4-3, receiver power supply control circuit 4-4, microcontroller 4-5,3 receiver power supply driving circuits are (respectivelyFirst receiver power supply driving circuit 4-7, second receiver power driving circuit 4-8, third receiver power supply driving circuit 4-And receiver CAN interface 4-6 9).Wherein power interface 4-1, overvoltage crowbar 4-2, DC power supply translation circuit 4-3 be successivelyConnection, DC power supply translation circuit 4-3 are separately connected receiver power supply control circuit 4-4 and microcontroller 4-5, microcontroller 4-5 are separately connected receiver power supply control circuit 4-4 and receiver CAN interface 4-6, and receiver power supply control circuit 4-4 connects respectivelyConnect the first receiver power supply driving circuit 4-7, second receiver power driving circuit 4-8, third receiver power supply driving circuit4-8, CAN interface 4-6 are separately connected the first tire pressure receiver 3-1, second fetus pressure receiver 3-2, third tire pressure receiver 3-3.
Microcontroller 4-5 connection receiver power supply control circuit 4-5, to pass through 3 receiver power supply driving circuit controls3 tire pressure receiver power supplies are made, realize configurableization to receiver quantity.Wherein the first receiver power supply driving circuit 4-7The first tire pressure receiver 3-1 is connected, second receiver power driving circuit 4-8 connection second fetus presses receiver 3-2, and third receivesDevice power driving circuit 4-9 connection third tire receives receiver 3-3.
Tire pressure monitoring system in the present embodiment further includes vehicle CAN interface 4-11, and vehicle CAN interface 4-11 connection is micro-Tire information is transmitted on display interface by controller 4-5 by CAN network.
Working principle:
3 tire pressure receivers, which are designed, according to the structure of harmful influence vehicle is mounted on 3 different locations of vehicle chassis, this 3Receiver can receive the tire pressure and temperature information of 12 tires.In order to reduce the energy consumption of system, guaranteeing that tire pressure is stableIn the case where, it is only necessary to the data that the first tire pressure receiver and second fetus pressure receiver receive.So purpose is realized to receptionThe configuration of device quantity.Method particularly includes:
Vehicle power supply 1 is connected to power interface 4-1, by direct current after filter circuit 4-10 and overvoltage crowbar 4-2Power converting circuit 4-3 provides D.C. regulated power supply to microcontroller 4-5, receiver power supply control circuit 4-4.Tire pressure controller4 receiver power supply driving circuit is connect with tire pressure receiver 3.The microcontroller 4-5 of tire pressure controller 4, receiver power supply controlCircuit 4-4 processed, receiver power supply driving circuit, which are realized, (such as controls first and second to power supply power supply configurableization of tire pressure receiver 3When receiver power supply drive circuit works, third receiver power supply driving circuit do not work, i.e. the first and second tire pressure receiver workMake, third tire pressure receiver does not work), and then to receiver quantity configurableization, the power consumption of system is reduced, external electromagnetic is reducedInterference.Tire pressure receiver 3 is distributed according to vehicle structure and wheel, and flexible allocation is mounted on vehicle chassis, it is ensured that tire pressure sensingThe wireless signal that device 2 is issued is stablized reception and transmission.
Embodiment 2
Commercial vehicle is because there is this vehicle of tractor+trailer, and tractor can frequently replace trailer.Different manufacturers productionThe tyre pressure sensor model of trailer configuration may be different, therefore there is the tire that two kinds of different models are existed simultaneously on same vehiclePressure sensor.The case where for tractor+trailer, as the tyre pressure sensor of tractor is tyre pressure sensor A, the tire pressure of trailer passesSensor is tyre pressure sensor B, and the receiver CAN interface 4-6 of tire pressure controller 4 is separately connected with each tire pressure receiver.TireThe microcontroller 4-5 of pressure controller 4 and receiver CAN interface 4-6, vehicle CAN interface 4-11 are separately connected.When same on a vehicleWhen there are when the tyre pressure sensor of two kinds of different models, microcontroller 4-5 is by receiver CAN interface 4-6 to each tire pressureReceiver is configured, and the receiver for distributing different number to carry out wireless signal to the tyre pressure sensor of different model respectivelyIt receives and transmits, solve the problems, such as while being compatible with two kinds of tyre pressure sensors on same vehicle and depositing.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and itsInventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.