CN105928665A - Automobile trunk water leakage detection apparatus with vibration self-startup function - Google Patents
Automobile trunk water leakage detection apparatus with vibration self-startup function Download PDFInfo
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- CN105928665A CN105928665A CN201610280453.3A CN201610280453A CN105928665A CN 105928665 A CN105928665 A CN 105928665A CN 201610280453 A CN201610280453 A CN 201610280453A CN 105928665 A CN105928665 A CN 105928665A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides an automobile trunk water leakage detection apparatus with a vibration self-startup function. The apparatus comprises a master control module, a vibration sensing module, a display module, a liquid detection module and a power supply module, wherein the master control module comprises an MCU device and an array type keyboard input device, the vibration sensing module is an acceleration transducer, and the power supply module supplies power to the acceleration transducer, the MCU device and the display module; and the acceleration transducer is in charge of transmitting detected data to the MCU device and processing the data, the array type keyboard input device, according to data information received by the MCU device, arranges a lowest driving bumpy degree for detecting automatic startup of a circuit, the display module is used for displaying an acceleration value of the acceleration transducer, and the liquid detection module, according to the data transmitted by the MCU device, determines whether to carry out liquid leakage detection. The apparatus provided by the invention overcomes defects in the prior art, is low in cost, high in versatility and small in occupied space, can realize intelligent real-time monitoring and guarantees the safety of automobiles in operation.
Description
Technical field
The present invention relates to a kind of liquid leak detecting device, a kind of automobile trunk liquid leak detecting device containing vibration self-starting function.
Background technology
Along with socio-economic development, living standards of the people improve, and automobile popularity rate increases day by day, and all kinds of Vehicular devices are to intelligent, miniaturization, and people are more and more higher to the requirement of driving experience, and driver focuses more on safety and the comfortableness of vehicle.The overall raising of vehicle manufacture level, make all kinds of driving ancillary equipments of vehicle, safety monitoring device technology content higher, new technique, new method, new object emerge in an endless stream, and driving environment, passenger take the management in space for driver, adjusts and provide good strategy instruction.But, existing technology not carries out omnibearing monitoring management to automobile, and all kinds of corners with automobile-used boot as representative still cannot be observed in time by driver and manage.Wherein, the leakage of boot liquid makes driver the most worried, the lighter so that boot interior trim damages, and article soak, severe one, and the spare tyre bottom corrosion even jeopardizes automatically controlled circuit, initiating failure.In traditional car, owing to boot and driving cabin are in isolation or half isolation, the situation of boot is difficult to be grasped by the personnel in passenger cabin, and liquid incident of leakage once occurs, and is only capable of relying on the artificial reviewing party of driver can find fault.Therefore, develop a set of small-sized intelligent rear-box liquid leakage device to be of great practical significance.
In the prior art, liquid Leak Detection mode wide variety, it is widely used.Predominantly detecting technology in building detection, pipe detection, ship detecting field has following three kinds: one to be single-point leakage water tester；Two is microwave mode；Three is water leakage detection line.Single-point leakage water tester can be divided into liquidometer method, photoelectric method etc., and probe is placed in it may happen that the place of liquid leakage by it, is issued by signal when there being water；Its shortcoming is to require installation site, and existing equipment requires there is the sufficiently large water yield.Microwave mode is to utilize microwave to detect the sensitivity of the dielectric constant of medium, owing to each material moisture content difference causes dielectric constant different, therefore, just can be detected leaking area by microwave, and it is again microwave moisture measurement method；Its shortcoming is that overlay area is little, and it is the most invalid for the material of steel construction.Water leakage detection line is divided into delocalization, two kinds, location, usually split conductor, when having current through detection line, can change the resistance of detection line, and controller just can detect that the change of signal；Its shortcoming is that detection line is relatively costly, especially location formula detection line, mainly external product, and every meter reaches hundred yuan, it is difficult to be applied to the leak water detdction in small-sized place.Although it addition, existing all kinds of mature technology is suitable for industrial scale applications, but it is generally high to hardware requirement, taking up room big, energy consumption is high, with high costs, difficult in maintenance, cannot be applied directly on automobile completely, so that rethink a kind of novel liquid leak detecting device.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of low cost is provided, uses flexible, highly versatile and take up room little, and a kind of automobile trunk liquid leak detecting device containing vibration self-starting function of intelligent real time monitoring can be realized.
nullFor realizing above technical purpose，The technical scheme is that a kind of automobile trunk liquid leak detecting device containing vibration self-starting function，Including main control module、Vibrating sensing module、Display module、Liquid detecting module and power module，It is characterized in that，Described main control module includes MCU device and array finger-impu system，Described array finger-impu system is connected by four input/output interfaces with MCU device，Described vibrating sensing module is acceleration transducer，Described acceleration transducer is used serial communication mode with MCU device and is connected by an input/output interface，Described display module is carried out information transmission by four parallel-by-bit communication modes and is connected by four input/output interfaces with MCU device，Described liquid detecting module is relay isolation module，The testing circuit that controls of described relay isolation module is connected with the colelctor electrode of audion，The base stage of described audion is connected with the input/output port of MCU device，Described power module gives acceleration transducer respectively、MCU device and display module are powered；Described acceleration transducer is responsible for the data detected being sent to MCU device and processing, described array finger-impu system arranges, according to the data message that MCU device receives, the minimum traveling that testing circuit automatically turns on and jolts degree, described display module is for showing the accekeration of acceleration transducer, the data that described liquid detecting module transmits according to MCU device, it may be judged whether detect.
As improvement, described MCU device is 8-bit microcontroller, and described array finger-impu system is made up of snap switch, including the button of four varying sensitivities, described button Low level effective.
As improvement, described acceleration transducer is 3-axis acceleration sensor, detects the resultant acceleration of running car in real time.
As improvement, described display module is liquid crystal display, is used for showing letter, digit symbol, middle character type and figure, has drawing and text screen mixed display function.
As improvement, described relay isolation module is divided into one-level relay and two grades of relays, described one-level relay is for controlling loop, for controlling the folding condition of whole detection circuit, described control loop includes that two light emitting diodes, buzzer and detection line, described two grades of relays are a parallel branch of one-level relay control circuit.Described one-level relay is provided with the detection line of liquid leakage, described detection line is laid along automobile trunk edge, for detecting the liquid leakage outside boot, described two grades of relays are provided with nine liquid Leak Detection points, described nine test points take advantage of the array format of three to be evenly spaced in inside described detection line with three, for detecting the liquid leakage within boot.Described detection line is two parallel hard bare copper wires, and the support bar being made up of polyamide between described two parallel hard bare copper wires connects, and described support bar is for fixing copper cash and keeping the insulating properties between two copper cash.Described detection test point is cylindrical tank, described tank is polyamide, upper end open is used for collecting leakage liquid, described bottom of gullet is provided with two exposed copper conductors, when there being liquid to leak, described test point or two copper cash short circuits of detection line, described control circuit closed and alarm device form loop, described buzzer and light emitting diode and start sound and light alarm.
Further, the input power of described power module is vehicle power, and described vehicle power is 12V constant voltage dc source, and the output voltage of described power module is 3.7V and 5V, and described 3.7V supplies vibrating sensing module, described 5V supply MCU device and display module.
It is an advantage of the current invention that:
1, present invention can apply to the boot liquid Leak Detection of all kinds of kart, intelligent real time monitoring can not only be realized, but also there is vibratory response self-starting function, can be in real time to acceleration transducer data analysis, and coordinate gear that control Leak Detection circuit work is set, fill up the blank of domestic existing automobile trunk detection technique.
2, the present invention uses integrated circuit that reliability is high as central control system, occupies little space.Liquid detecting circuit is placed in the bottom of boot, does not affect storage space.Package unit volume is little, lightweight, does not brings unnecessary load for automobile.
3, highly versatile of the present invention, is not limited by vehicle, is not affected by boot shape, size.Liquid detecting circuit can be installed in any material easily and flexibly, it is also possible to increases and decreases detection number of sensors according to the flexible in size of boot.
4, after apparatus of the present invention are installed, as long as vehicular power-bottle has electricity just can low-power consumption for a long time to work, there is chronicity, real-time.And, the present invention has Self-disconnecting ability, maintains one minute turn-on time every time, had both left sufficient liquid flow time, and can prevent vehicular power-bottle over-discharge in the case of no supervision.
5, the present invention has taken into full account that boot internal liquid occurs leakage and the different characteristics of two kinds of situations of external environment condition seepage, and testing circuit is divided into Edge check line and middle part test point, uses point row to control, flexible and convenient to use.
6, the present invention uses a set of control circuit to be controlled, and implementation cost is low, economical.8 single-chip microcomputer P89C51RD2HBP market quotes 30 yuan, 3-axis acceleration sensor ADXL345 market quotes 50 yuan, OCMJ4X16C liquid crystal display screen market quotes 10 yuan, LM317 module markets is offered 12 yuan, the HRB-N80 buzzer market price 10 yuan, relay HK4100F-DC5V-SHG market quotes 6 yuan, 90 series audion market quotes 2 yuan, 2mmT2 red copper bare conductor market quotes 10 yuan every meter, as a example by general three box car on the market, boot typically has a size of long x width=1600x1100 (mm), therefore a length of 5400mm of water leakage detection line, amount to 54 yuan.Meter and other components, circuit board making and device outer package expense, cost of the present invention is about 300 yuan and often overlaps.
Accompanying drawing explanation
Fig. 1 is main control module and the circuit theory schematic diagram of vibrating sensing module of the present invention.
Fig. 2 is the circuit theory diagrams of the liquid detecting module of the present invention.
Fig. 3 is the circuit theory diagrams of the power module of the present invention.
Fig. 4 is the communication interface schematic diagram of each intermodule of the present invention.
Fig. 5 is automobile trunk detection line and the test point distribution pictorial diagram of the present invention.
Fig. 6 is the hardware composition frame diagram of the present invention.
1-main control module, 1.1-MCU device, 1.2-array finger-impu system, 2-vibrating sensing module, 3-display module, 4-liquid detecting module, 4.1-one-level relay, bis-grades of relays of 4.2-, 5-power module.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described.
nullA kind of automobile trunk liquid leak detecting device containing vibration self-starting function，According to Fig. 4 and Fig. 6，Including main control module 1、Vibrating sensing module 2、Display module 3、Liquid detecting module 4 and power module 5，It is characterized in that，Described main control module 1 includes MCU device 1.1 and array finger-impu system 1.2，Described array finger-impu system 1.2 is connected by four input/output interfaces with MCU device 1.1，Described vibrating sensing module 2 is acceleration transducer，Described acceleration transducer is used serial communication mode and is connected by an input/output interface with MCU device 1.1，Described display module 3 is carried out information transmission by four parallel-by-bit communication modes and is connected by four input/output interfaces with MCU device 1.1，Described liquid detecting module 4 is relay isolation module，The testing circuit that controls of described relay isolation module is connected with the colelctor electrode of audion，The base stage of described audion is connected with the input/output port of MCU device 1.1，Described power module 5 gives acceleration transducer respectively、MCU device 1.1 and display module 3 are powered；Described acceleration transducer is responsible for the data detected being sent to MCU device 1.1 and processing, described array finger-impu system 1.2 arranges, according to the data message that MCU device 1.1 receives, the minimum traveling that testing circuit automatically turns on and jolts degree, described display module 3 is for showing the accekeration of acceleration transducer, the data that described liquid detecting module 4 transmits according to MCU device 1.1, it may be judged whether detect.
Described MCU device 1.1 is 8-bit microcontroller, and described array finger-impu system 1.2 is made up of snap switch, including the button of four varying sensitivities, described button Low level effective.
Described acceleration transducer is 3-axis acceleration sensor, detects the resultant acceleration of running car in real time.
Described display module 3 is liquid crystal display, is used for showing letter, digit symbol, middle character type and figure, has drawing and text screen mixed display function.
According to Fig. 2, described relay isolation module is divided into one-level relay 4.1 and two grades of relays 4.2, described one-level relay 4.1 is for controlling loop, for controlling the folding condition of whole detection circuit, described control loop includes that two light emitting diodes, buzzer and detection line, described two grades of relays 4.2 are the parallel branch that one-level relay 4.1 controls loop.According to Fig. 5, described detection line for the liquid leakage detected outside boot and is laid along automobile trunk edge, described two grades of relays 4.2 are provided with nine liquid Leak Detection points, described nine test points take advantage of the array format of three to be evenly spaced in inside described detection line with three, for detecting the liquid leakage within boot.Described detection line is two parallel hard bare copper wires, and the support bar being made up of polyamide between described two parallel hard bare copper wires connects, and described support bar is for fixing copper cash and keeping the insulating properties between two copper cash.Described detection test point is cylindrical tank, and described tank is polyamide, and upper end open is used for collecting leakage liquid, and described bottom of gullet is provided with two exposed copper conductors.When there being liquid to leak, described test point or two copper cash short circuits of detection line, described control circuit closed, described buzzer and light emitting diode start sound and light alarm.
The input power of described power module 5 is vehicle power, and described vehicle power is 12V constant voltage dc source, and the output voltage of described power module 5 is 3.7V and 5V, and described 3.7V supplies vibrating sensing module 2, described 5V supply MCU device 1.1 and display module 3.
With reference to the accompanying drawings shown in 1, described MCU device 1.1 is single-chip microcomputer, and described single-chip microcomputer uses P89C51RD2HBP, minimum Single Chip Microcomputer (SCM) system to be made up of reset circuit, heart circuit and single-chip microcomputer body.RESET port is connected with 5V level by S6 reset switch, receives repositioning information, X1 with X2 port is connected with peripheral hardware crystal oscillating circuit, and it is 12MHZ that crystal resonator Y2 arranges frequency.Single-chip microcomputer VCC port, GND port respectively with 5V, be connected power supply.Single-chip microcomputer EA/VPP port connects high level with ROM in use sheet.
Described vibrating sensing module 2 is acceleration transducer, and described acceleration transducer uses ADXL345, wherein, VDD and GND port connects 3.7V and power supply ground respectively, VS, CS port connects 3.7V power supply by the resistance that resistance is one kilohm, and SDO port passes through one kilohm of resistance eutral grounding.Unsettled port is RESERVED and NC port, does not take over what circuit.ADXL345 and single-chip microcomputer connecting line have four, and SCL, SDL port is connected with the P1 mouth of single-chip microcomputer after being connected with high level by one kilohm of resistance, for inputting collection data, INT1, INT2 port connects with INT0 and the INT1 interface of single-chip microcomputer respectively, for delivery time interrupt signal.
With reference to the accompanying drawings shown in 1, described display module 3 is liquid crystal display, described liquid crystal display use model be OCMJ14X16C, wherein VDD and VSS port connect respectively 5V and power supply ground, other function port ground connection connect 5V high level for LEDB, LEDA and PSB port.The data receiver port DB4-DB7 of liquid crystal display screen is connected with the I/O port P2.4-P2.7 of single-chip microcomputer.Power module selects LM317 to send into LM317 input Vin after capacitor filtering as pressure regulation integrated circuit, vehicular power-bottle 12V power supply, and Vout end exports 5V and 3.7V power supply for governor circuit and testing circuit after C13, C15 filter.With reference to the accompanying drawings shown in 3, in the power circuit used by this example, input voltage is had filtering to improve waveform effect by electric capacity C12, C14, and the transient response promoting output voltage is played an important role by output capacitor C13, C15.When diode D13, D15 prevent short circuit, output capacitor directly discharges through integrated circuit, and diode D14, D15 prevent electric capacity C8, electric discharge direct to integrated circuit during C9 short circuit.According to the voltage regulation characteristic of LM317, when resistance R15, R16 are fixed value resistance, potentiometer R17, R18 are at the height of diverse location adjustable output voltage, and through calculating, during output voltage 5V, R17 should be 600 ohm；During output voltage 3.7V, R18 should be 392 ohm.
With reference to the accompanying drawings shown in 4,4.1, two grades of relays 4.2 of the one-level relay of liquid Leak Detection module 4 accept single-chip microcomputer P0.1 and the control signal of P0.0 port respectively.With reference to the accompanying drawings shown in 2, the base stage of audion 9013 is connected with single-chip processor i/o port with diode by the resistance of one kilohm.The emitter stage of audion is directly grounded, and colelctor electrode is connected with relay by diode 4148, and meanwhile, the negative pole of diode is connected with 5V power supply, has voltage stabilizing function.The primary circuit of one-level Control liquid detecting module, including light emitting diode D12, D11, buzzer LS1, water leakage detection line and the shunt circuit of two grades of relays.When one-level relay switch K3 closes, D11 relay indicating light is bright, and water leakage detection line is energized, in running order；When two grades of relay K 4 close in the case, leak water detdction point (S23-S31) is energized, in running order.
Described Fig. 6 is the hardware distribution frame diagram that the present invention detects device, and the workflow of described device is, when the input end switch of power module closes, connects the connection with vehicular power-bottle, inputs 12V power supply.Power module 5 is powered for main control module, through reset circuit effect, MCU device 1.1 (single-chip microcomputer) is started working, vibrating sensing module 2 monitors the extent of vibration of automobile in real time, and the peak acceleration recorded is transferred to single-chip microcomputer, accekeration shows in display module 3 (liquid crystal display), according to the collection data of acceleration transducer, single-chip microcomputer judges whether automobile is in transport condition, if transport condition, then one-level relay 4.1 controls switch Guan Bi, water leakage detection line is in running order, if now there is leakage liquid at boot edge, two copper cash short circuits of detection line, alarm device sends acousto-optic sound and reminds driver；Now, the input information of the input/output port that single-chip microcomputer scanning is connected with the switch of array finger-impu system 1.2, when driver presses a certain gear button, single-chip microcomputer accepts low level information, concrete acceleration value is converted to by internal processes, when acceleration transducer gathers data more than this value, two grades of relays 4.2 control switch Guan Bi, test point is in running order, if there is leak liquid in boot mid portion, the short circuit of test point copper cash termination, the connection of acoustic-optic alarm loop, alert.One-level relay 4.1 starts maintenance on-state one minute every time, prevents from causing circuit to be connected for a long time owing to liquid exists, vehicular power-bottle over-discharge.
Claims (10)
1. the automobile trunk liquid leak detecting device containing vibration self-starting function, including master control mould
Block (1), vibrating sensing module (2), display module (3), liquid detecting module (4) and power module (5),
It is characterized in that, described main control module (1) includes MCU device (1.1) and array finger-impu system
(1.2), described array finger-impu system (1.2) and MCU device (1.1) are defeated by four inputs
Outgoing interface connect, described vibrating sensing module (2) is acceleration transducer, described acceleration transducer with
MCU device (1.1) is used serial communication mode and is connected by an input/output interface, described display mould
Block (3) carries out information transmission and by four inputs by four parallel-by-bit communication modes and MCU device (1.1)
Output interface connects, and described liquid detecting module (4) is relay isolation module, described relay isolation mode
The testing circuit that controls of block is connected with the colelctor electrode of audion, the base stage of described audion and MCU device (1.1)
Input/output port connect, described power module (5) respectively give acceleration transducer, MCU device (1.1)
Power with display module (3)；Described acceleration transducer is responsible for the data detected to be sent to MCU device
(1.1) and process, described array finger-impu system (1.2) connects according to MCU device (1.1)
The data message received arranges the minimum traveling that testing circuit automatically turns on and jolts degree, described display module (3)
For showing the accekeration of acceleration transducer, described liquid detecting module (4) is according to MCU device (1.1)
The data transmitted, it may be judged whether detect.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 1
Detection device, it is characterised in that: described MCU device (1.1) is 8-bit microcontroller, described array key
Dish input equipment (1.2) is made up of snap switch, and including the button of four varying sensitivities, described button is low
Level is effective.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 1
Detection device, it is characterised in that: described acceleration transducer is 3-axis acceleration sensor, detects vapour in real time
The resultant acceleration that car travels.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 1
Detection device, it is characterised in that: described display module (3) is liquid crystal display, is used for showing letter, number
Character number, middle character type and figure, have drawing and text screen mixed display function.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 1
Detection device, it is characterised in that: described relay isolation module be divided into one-level relay (4.1) and two grades continue
Electrical equipment (4.2), described one-level relay (4.1) is for controlling loop, for controlling opening of whole detection circuit
Conjunction state, described control loop includes two light emitting diodes, buzzer and detection line, described two grades of relays
Device (4.2) is the parallel branch that one-level relay (4.1) controls loop.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 5
Detection device, it is characterised in that: described detection line is for detecting the liquid leakage outside boot and along automobile
Boot edge is laid, and described two grades of relays (4.2) are provided with nine liquid Leak Detection points, described nine
Test point takes advantage of the array format of three to be evenly spaced in inside described detection line with three, is used for detecting inside boot
Liquid leakage.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 6
Detection device, it is characterised in that: described detection line is two parallel hard bare copper wires, described two parallel
Hard bare copper wire between the support bar be made up of polyamide connect, described support bar is used for fixing copper cash
And keep the insulating properties between two copper cash.
A kind of automobile trunk liquid leakage containing vibration self-starting function the most according to claim 6
Detection device, it is characterised in that: described detection test point is cylindrical tank, and described tank is polyamide resin
Fat, upper end open is used for collecting leakage liquid, and described bottom of gullet is provided with two exposed copper conductors.
9. after according to a kind of automobile containing vibration self-starting function described in claim 5 or 6 or 7 or 8
Standby case liquid leak detecting device, it is characterised in that: when there being liquid to leak, described test point or detection line
Two copper cash short circuits, described control circuit closed, described buzzer and light emitting diode start sound and light alarm.
A kind of automobile trunk liquid containing vibration self-starting function the most according to claim 1 is let out
Device for detecting leakage, it is characterised in that: the input power of described power module (5) is vehicle power, described car
Carrying power supply is 12V constant voltage dc source, and the output voltage of described power module (5) is 3.7V and 5V, institute
State 3.7V supply vibrating sensing module (2), described 5V supply MCU device (1.1) and display module (3).
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