CN1331688C

CN1331688C - Dynamic automobile tyre safety automatic speech sound prealarming and display device

Info

Publication number: CN1331688C
Application number: CNB2003101176154A
Authority: CN
Inventors: 林土胜
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2003-12-30
Filing date: 2003-12-30
Publication date: 2007-08-15
Anticipated expiration: 2023-12-30
Also published as: CN1555986A

Abstract

The present invention relates to an automatic voice early-warning and display device for the safety of a dynamic automobile tire, which is composed of a casing, a working panel and a built-in circuit board, wherein a strip-shaped liquid crystal display screen and an LED indicating lamp are installed on the working panel; the top surface of the casing is provided with a toggle switch, a preset button and a horn; and the back surface of the casing is provided with a data input interface. The device is placed at the front window of an automobile; data of pressure, temperatures, etc. are directly displayed on the same display screen in real time after the data of dynamic automobile tires are transferred by the interface and are processed. Each tire is circularly displayed by turns, and indicating lamps corresponding to the tires are concomitantly brightened, so the display is visible. When the data reach the originally-preset safety limit value, the device can automatically send out an early-warning voice signal to remind drivers in time to take safety measures. The device has the advantages that the process of display and early warning can be automatically realized, the manual switching operations do not need, and the present invention offers convenience for safe driving and favorable guarantee for preventing traffic accidents in time.

Description

Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit

Technical field

The present invention relates to dynamic vehicle state safety monitoring technology field, particularly the monitoring of automobile tyre security and technique of display specifically are meant a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit.

Background technology

To data such as the dynamic vehicle tire pressure that collects and temperature, generally be to process and display at present by the small and exquisite read out instrument that is placed in the car windscreen platform, with the little LCDs display data of purpose made on its working panel, and accompany by the corresponding liquid crystal symbol prompting.Observe the state of concrete certain tire, then need to press the corresponding button in this device with manual mode; Need to observe tire pressure or temperature, then also need to press the corresponding button and switched with manual mode.Automobile is in scorch, and tire pressure or temperature just have the danger of transfiniting, and carry out M/C with observed data this moment, is unfavorable for driving concentrating of spirit.If artificially blocked operation just can show each tire data and carry out early warning automatically by voice intuitively, then can improve the safety of travelling greatly and be beneficial to the generation that in time avoids traffic accident.But still there are not relevant device and device at present.China's ZL00237189.8 patent disclosure a kind of " air pressure of automobile tire remote measurement displaying alarm ", but this device adopts custom integrated circuit, can only test the mono-tire pressure, and show by 4 cover LED light, structure is simplified inadequately, and function singleness, displaying contents are also limited to very much.

Summary of the invention

Purpose of the present invention is exactly for above-mentioned prior art is improved, and a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit is provided.This device is shown the state of each tire in turn by general strip liquid crystal display, make that data can show simultaneously such as the air pressure of tire and temperature, and the cooresponding indicator lamp of tire physical location is followed shinny, when air pressure or temperature arrival danger line, automatically send the early warning voice, in time remind the driver to take safety measures, whole process is finished automatically, needn't the manual switching operation.

A kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit of the present invention, it is made of jointly casing, working panel, internal circuit board; Wherein, the casing outside is provided with working panel, and LED light is installed on the working panel; The end face of casing is provided with toggle switch, preset button and loudspeaker, the casing back side is provided with Data Input Interface, and respectively be installed in casing in internal circuit board on respective point be electrically connected mutually, it is characterized in that, the strip LCDs is installed on the described working panel; Described internal circuit board is by the centring control treatment circuit, data input circuit, tire early-warning parameters prewired circuit, the lattice lcd display circuit, display control circuit, the tire location indicating circuit, non-volatile memory circuit, the early warning sound-compound-circuit, the voice amplifying circuit, condition monitoring and reset circuit, preset and move and select circuit to be electrically connected formation jointly, its interconnected relationship is: the centring control treatment circuit is respectively by the data input circuit signal wire (SW), tire early-warning parameters prewired circuit signal wire (SW), lattice lcd display circuit signal wire (SW), the display control circuit signal wire (SW), tire location indicating circuit signal wire (SW), non-volatile memory circuit signal wire (SW), early warning sound-compound-circuit signal wire (SW), condition monitoring and reset-circuit signal line, preset and move select the circuit signal line respectively with data input circuit, tire early-warning parameters prewired circuit, the lattice lcd display circuit, display control circuit, the tire location indicating circuit, non-volatile memory circuit, the early warning sound-compound-circuit, condition monitoring and reset circuit, presetting with moving selects circuit to be electrically connected mutually, the lattice lcd display circuit also is electrically connected with display control circuit mutually by the display control circuit signal wire (SW), the early warning sound-compound-circuit also is electrically connected with the voice amplifying circuit mutually by voice amplifying circuit signal wire (SW), presets with moving and selects circuit also to be electrically connected mutually by condition monitoring and reset-circuit signal line and condition monitoring and reset circuit.

The present invention compared with prior art has following advantage and beneficial effect:

1. the present invention adopts the non-contact type signal sensing mode of tire built-in sensors wireless transmission, can connect use with the output signal of operator's compartment wireless signal receiver, the automobile tyre built-in sensor is sampled and the tyre temperature of wireless transmission and pressure data sequence realization electrical isolation transmission and identification processing to being derived from, and has realized regular in turn air pressure and all class data of temperature that shown each tire by general strip liquid crystal display simultaneously.

2. the present invention adopts advanced microprocessor as circuit core, and but the advanced lattice liquid crystal display screen that passes through coinage shows, displaying contents, character and Chinese character have arbitrarily realized that cooresponding LED light follows shinnyly, intuitively indicate corresponding tire physical location.The present invention is equally applicable to the processing of tire braking figures and monitoring.

3. when air pressure or temperature arrival danger line, the present invention sends the early warning voice automatically, in time reminds the driver to take safety measures, and whole process is finished automatically, needn't the manual switching operation.

4. the safe limit of data of the present invention has inner preparatory function, has a power failure can not lose parameter, possesses the function of phonetic synthesis, can adapt to different tire classifications.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is the circuit block diagram of the embodiment of the invention;

Fig. 3 is the schematic circuit diagram of the embodiment of the invention.

The specific embodiment

Below in conjunction with drawings and Examples, the present invention is done detailed description further.

As shown in Figure 1, present embodiment is made of jointly casing 1, working panel, internal circuit board.Be equiped with demonstration numerical digit group 3, the demonstration numerical digit group 4 of tyre temperature value, off front wheel LED light 5, off hind wheel LED light 6, the near front wheel LED light 7, the left rear wheel LED light 8 of strip LCDs 2 and tire pressure value on the working panel of casing 1; The end face of casing is provided with loudspeaker 9, hundred preset button 10, ten preset button 11, individual position preset button 12, presets acknowledge button 13, presets and move toggle switch 14, the casing back side is provided with Data Input Interface 15, and respectively with internal circuit board on respective point be electrically connected mutually.

As shown in Figure 2, centring control treatment circuit 16 on internal circuit board is respectively by the data input circuit signal wire (SW), tire early-warning parameters prewired circuit signal wire (SW), the display control circuit signal wire (SW), tire location indicating circuit signal wire (SW), non-volatile memory circuit signal wire (SW), condition monitoring and reset-circuit signal line respectively with data input circuit 17, tire early-warning parameters prewired circuit 18, display control circuit 20, tire location indicating circuit 21, non-volatile memory circuit 22, condition monitoring is electrically connected mutually with reset circuit 25, lattice lcd display circuit 19 is respectively by centring control treatment circuit signal wire (SW), the display control circuit signal wire (SW) respectively with centring control treatment circuit 16, display control circuit 20 is electrically connected mutually, early warning sound-compound-circuit 23 is respectively by centring control treatment circuit signal wire (SW), voice amplifying circuit signal wire (SW) respectively with centring control treatment circuit 16, voice amplifying circuit 24 is electrically connected mutually, presets and moves and select circuit 26 respectively by centring control treatment circuit signal wire (SW), condition monitoring and reset-circuit signal line respectively with centring control treatment circuit 16, condition monitoring is electrically connected mutually with reset circuit 25.Its principle of work is: when central control and treatment circuit 16 detect preset and move select circuit 26 preset output signal the time, set up the limit of three tire pressures and temperature parameter respectively by tire early-warning parameters prewired circuit 18, and start dot matrix liquid crystal display circuits 19 by centring control treatment circuit 16 and display control circuit 20 and carry out corresponding demonstration, simultaneously the parameter limit value of confirming is delivered to the nonvolatile storage that has a power failure of non-volatile memory circuit 22.When central control and treatment circuit 16 detects the operation output signal that presets and move selection circuit 26, centring control treatment circuit 16 receives the air pressure and the temperature data of each tire that regularly sends in turn from data input circuit 17, deliver to lattice lcd display circuit 19 then and show in real time, and demonstrate cooresponding tire location by tire location indicating circuit 21; Meanwhile, centring control treatment circuit 16 compares the limit of storage in each real time input data and the non-volatile memory circuit 22, once the value of reaching the limit of, just start early warning sound-compound-circuit 23 and carry out phonetic synthesis, and play out the early warning voice by voice amplifying circuit 24.Condition monitoring and reset circuit 25 are monitored the running state of centring control treatment circuit 16 in real time to guarantee the normal operation of system.

As shown in Figure 3, centring control treatment circuit 16 is electrically connected jointly by integrated circuit U1, crystal oscillator CY, capacitor C 1, C2 and constitutes; Data input circuit 17 is electrically connected jointly by interface J1, photoelectrical coupler U9, resistance R 12 and constitutes; Tire early-warning parameters prewired circuit 18 is electrically connected jointly by button switch S1～S4, resistance R 1～R8 and constitutes; Lattice lcd display circuit 19 is electrically connected jointly by LCD MODULE LCM, resistance R 9～R11 and constitutes; Display control circuit 20 is electrically connected jointly by integrated circuit U2, U8A, U8B, U8C and constitutes; Tire location indicating circuit 21 is electrically connected jointly by indicator lamp LED1～LED4, resistance R 23～R26 and constitutes; Non-volatile memory circuit 22 is electrically connected jointly by integrated circuit U5, transistor T R, resistance R 17～R20 and constitutes; Early warning sound-compound-circuit 23 is electrically connected jointly by integrated circuit U3, resistance R 13, capacitor C 3 and constitutes; Voice amplifying circuit 24 is electrically connected jointly by integrated circuit U4, capacitor C 4～C10, resistance R 13～R16, loudspeaker SP and constitutes; Condition monitoring and reset circuit 25 are electrically connected jointly by integrated circuit U6, reset button S5 and constitute; Preset and move and select circuit 26 to be electrically connected jointly and to constitute by integrated circuit U7A, diode D1, the two-way toggle switch SW of hilted broadsword, resistance R 21, R22, capacitor C 11.Its circuit working principle is: apparatus of the present invention are when the needs preset parameter, preset and move and select the switch SW of integrated circuit U 7A to dial to the left, the negative level of output makes the MR end of condition monitoring and reseting circuit U6 become low level through diode D1, and RESET end output high level resets centring control processing integrated circuit U1; Meanwhile, the P27 of U1 end enters preset condition because of detecting low level; Button S1～the S3 that presses tire early-warning parameters prewired circuit respectively is to set limiting figure, and shown by dot matrix lcd module LCM thereupon, the D0 of dot matrix lcd module LCM～D7 end data is provided by P00～P07 end of U1, address and read-write control signal are latched by the integrated circuit U 2 of demonstration control and are jointly controlled by U8A, U8B, U8C, resistance R 9 and R10 dividing potential drop are with the brightness of control Liquid Crystal Module, and R11 provides the Liquid Crystal Module background light source.Press then preset parameter affirmation of S4, this moment, the INT1 end output low level of U1 made transistor T R conducting, and the integrated circuit U 5 of non-volatile storage is removed write-protects, and parameter writes among the U5 by SCL and SDA end and preserves.When the switch SW of selecting integrated circuit U 7A is dialled to the right U1 is resetted presetting and moving, be high level because of U1 detects P27 this moment, just changes running state over to; Regularly be sent to the electric signal such as tire condition of interface J1, the INT0 end of delivering to U1 after photoelectrical coupler U9 isolates receives, delivering to LCM again shows in real time, show all class data such as pressure and temperature with screen, in the tire location indicating circuit cooresponding LED1～LED4 indicator lamp follow shinny, each tire with the wheel stream mode show circulation.Meanwhile, U1 compares data of at every turn receiving and the limit data that is stored among the U6, in case the value of reaching the limit of, the P10 of U1～P17 end is sent address signal to early warning speech synthesis ic U3, U3 delivers to voice amplification circuit U4 to synthetic voice signal by SP+ and SP-end and carries out processing and amplifying, broadcast from loudspeaker SP, remind chaufeur to take safety measures.Under the normal operation, U1 constantly offers regular impulse singla the WDI end of condition monitoring and reseting circuit U6 by the T0 end, in case move not normal, the WDI end can not receive impulse singla, the RESET end of U6 just produces high level signal, the reset terminal of delivering to U1 automatically resets system, and the hand reset button S5 of U6 is made for the usefulness of test.

The contriver thinks and realizes that optimal way of the present invention can be through development test: (1) adopts engineering plastics design processing and manufacturing to become the casing 1 of 95 * 55 * 70mm by shown in Figure 1; Offer strip LCDs window 2, four positions, LED light hole 5～8 on the casing working panel, the casing end face offers bellmouth orifice position 9, position, preset button hole 10～13, position, toggle switch hole 14, and interface holes position 15 is offered at the casing back side.(2) as one of embodiments of the invention, shown in Fig. 2 and 3, circuit board manufacturing, and behind the screening components and parts connection is installed, and for example integration member U1 can select the 97C52 type for use, and crystal oscillator CY selects the 12M type for use, U2 can select 373 types for use, and U3 can select 2590 types for use, and U4 can select 386 types for use, U5 can select the 24C04 type for use, U6 can select 813 types for use, and U7 can select 4528 types for use, and U8 can select 4011 types for use, transistor T R can select 5401 types for use, and LCD MODULE can be selected the 16X1 type for use; By shown in Fig. 2,3 and the described annexation of top specification sheets carry out circuit card and install to connect, and be electrically connected with associated components, install connect circuit card after, simply power up debugging, be placed in car windscreen platform place, just can implement the present invention preferably.

Claims

1. Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit, it is made of jointly casing, working panel, internal circuit board; Wherein, the casing outside is provided with working panel, and LED light is installed on the working panel; The end face of casing is provided with toggle switch, preset button and loudspeaker, the casing back side is provided with Data Input Interface, and respectively be installed in casing in internal circuit board on respective point be electrically connected mutually, it is characterized in that, the strip LCDs also is installed on the described working panel; Described internal circuit board is by the centring control treatment circuit, data input circuit, tire early-warning parameters prewired circuit, the lattice lcd display circuit, display control circuit, the tire location indicating circuit, non-volatile memory circuit, the early warning sound-compound-circuit, the voice amplifying circuit, condition monitoring and reset circuit, preset and move and select circuit to be electrically connected formation jointly, its interconnected relationship is: the centring control treatment circuit is respectively by the data input circuit signal wire (SW), tire early-warning parameters prewired circuit signal wire (SW), lattice lcd display circuit signal wire (SW), the display control circuit signal wire (SW), tire location indicating circuit signal wire (SW), non-volatile memory circuit signal wire (SW), early warning sound-compound-circuit signal wire (SW), condition monitoring and reset-circuit signal line, preset and move select the circuit signal line respectively with data input circuit, tire early-warning parameters prewired circuit, the lattice lcd display circuit, display control circuit, the tire location indicating circuit, non-volatile memory circuit, the early warning sound-compound-circuit, condition monitoring and reset circuit, presetting with moving selects circuit to be electrically connected mutually, the lattice lcd display circuit also is electrically connected with display control circuit mutually by the display control circuit signal wire (SW), the early warning sound-compound-circuit also is electrically connected with the voice amplifying circuit mutually by voice amplifying circuit signal wire (SW), presets with moving and selects circuit also to be electrically connected mutually by condition monitoring and reset-circuit signal line and condition monitoring and reset circuit.

2. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described centring control treatment circuit is electrically connected jointly by integrated circuit U1, crystal oscillator CY, capacitor C 1, C2 and constitutes.

3. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described data input circuit is electrically connected jointly by interface J1, photoelectrical coupler U9, resistance R 12 and constitutes.

4. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described tire early-warning parameters prewired circuit is electrically connected jointly by button switch S1～S4, resistance R 1～R8 and constitutes.

5. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described lattice lcd display circuit is electrically connected jointly by LCD MODULE LCM, resistance R 9～R11 and constitutes; Described display control circuit is electrically connected jointly by integrated circuit U2, U8A, U8B, U8C and constitutes.

6. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described tire location indicating circuit is electrically connected jointly by indicator lamp LED1～LED4, resistance R 23～R26 and constitutes.

7. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described non-volatile memory circuit is electrically connected jointly by integrated circuit U5, transistor T R, resistance R 17～R20 and constitutes.

8. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described early warning sound-compound-circuit 23 is electrically connected jointly by integrated circuit U3, resistance R 13, capacitor C 3 and constitutes.

9. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described voice amplifying circuit is electrically connected jointly by integrated circuit U4, capacitor C 4～C10, resistance R 13～R16, loudspeaker SP and constitutes.

10. a kind of Safety Automatic Pronunciation Prewarning of Dynamic Automobile Tyre and Display Unit according to claim 1 is characterized in that, described condition monitoring and reset circuit are electrically connected jointly by integrated circuit U6, reset button S5 and constitute; Described preset and move select circuit to be electrically connected jointly and to constitute by integrated circuit U7A, diode D1, the two-way toggle switch SW of hilted broadsword, resistance R 21, R22, capacitor C 11.