CN1443663A

CN1443663A - Wireless full-automatic motor vehicle type leakage alarm device

Info

Publication number: CN1443663A
Application number: CN 02154433
Authority: CN
Inventors: 孙锋利
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-07
Filing date: 2002-12-07
Publication date: 2003-09-24

Abstract

The wireless tire leakage alarm device is formed from several transmitter which have power supply and can send enciphered data signal and deciphering receiving machine which is mounted in the driver's cab and can be used for displaying the above-mentioned digilal signal on the nixie display indicator at the same time of making audio-alarm by BP machine. The transmitter can be screwed in and mounted on the air inlet valve of the tire, and fixed by screw, and its power supply switching-on and switching-off state is controlled by air pressure of tire, when the pressure of interior of tire is high than the alarm pressure of the transmitter, the power supply is in open circuit state, the transmitter is not worked, otherwise the power supply is in closed circuit state, the transmitter can send alarm signal, then it can be automatically stopped after 0.5 sec.

Description

Motor vehicle tyre leackage full antomatic radio alarming apparatus

Affiliated technical field

This patent relates to a kind of radio alarming device that can the remote measurement tire flat, especially is applied to operating full size vehicle.

Background technology

At present, known tyre flat alarm device, be to control the shaft-like switch that contacts to earth by the size variation of utilizing air pressure to realize, some annunciator promptly allows to report to the police, can not accurately inform the orientation of damaging tire, in case power supply is switched on just can not automatic guidance, more than both shortcomings of existing be: can equally also can bring the trouble of frequent replacing battery to the user because of ground-surface rugged and rough its reliability that influences.

Summary of the invention

In order to overcome the deficiency of existing warning device functional reliability and economy, this patent provides a kind of annunciator, this annunciator can not only remote measurement goes out the orientation of flat in service, and projector can be launched shutdown automatically after 0.5 second, prolonged the period of service of battery, made that whenever changing primary battery can work more than 2 months.

The technical scheme that its technical matters that solves this patent adopts is: it has shell and warning circuit, its constructional feature be this annunciator mainly by copper fastening base, outward mould shell, transmission circuit, air pressure detector switch, battery, and six parts such as intelligent-induction switch form, the break-make of the pressure control air pressure detector switch of utilization tire, and then the break-make and the emission state of control transmitter circuit.

The beneficial effect of this patent is: can monitor the safe condition of every tire at any time in the vehicle operating process, reach relieved driving, prolong the service life of tire, avoid the traffic accident and the economic loss that cause because of tire flat, be convenient to install and use.

Description of drawings

Below in conjunction with drawings and Examples this patent is described further.

Fig. 1 is this patent miniature transmitter and receptor outside drawing, volume size as figure.

Fig. 2 is the concrete structure section-drawing of this patent miniature transmitter.

Fig. 3 is the work scheme drawing of this patent miniature transmitter and receptor.

With reference to Fig. 1: Fig. 1-the 1st, the projector outside drawing, volume size as figure, Fig. 1-2 is the receptor outside drawing, A is a singledigit pipe display type; B is two charactron display types.The panel lower-left is the buzzer phone sound hole, and turning right is followed successively by: reset button, power knob and indicator lamp, upper right is digital character display tube.

With reference to Fig. 2: the miniature transmitter internal components before airtight is arranged, and the miniature transmitter concrete structure of device on cranked tire valve is: copper fastening base (1); Plastic casing (2); Screw in mouth (3); Air inlet thimble (4); Air chamber (5); Glued membrane (6); Circular ring metal conducting strip (7); Movable metallic conduction disk (8); Power spring (9); Seal ring (10); Plastic insulation (11); Transmission circuit plate (12); Battery (13); Lead (14); Copper screw blocks up (15); Intelligence touch point (16), (17), anti-lose, antitheft top wire hole (18), anti-lose, antitheft in hexagonal jackscrew (19), power supply conductivity spring (20), pressure regulating screw (21), regulate pad (22), negative thread conductive pole (23), pressure power spring (24), miniature lock screw (25), airtight round rubber cushion (26), tapped bore (27).

With reference to Fig. 3: Fig. 3-1 projector work scheme drawing, the projector operating voltage is 6V, K ₁Be the air pressure detector switch; M ₁Be the intelligent power control module; Ic ₁Be coding module; F201 is the data transmission module.M ₂Be intelligent touch point (16).M ₃Be intelligent touch point (17).

Fig. 3-the 2nd, receptor (Type B) work scheme drawing.

12-24V automobile power of alterating and direct current is through Ic ₂Output 5V voltage is to circuit after the voltage stabilizing.

J202 is a data reception module, Ic ₃Be demoder, Ic ₄For triggering latch.

Ic ₅It is warning music private circuit; Ic ₆It is decoder.

Ic ₇Be LED charactron telltale, HA is a buzzer phone.

The specific embodiment

The screw-in mouth (3) of projector is aimed at the tire mouth to be tightened, to prevent losing, antitheft jackscrew (19) screws in top wire hole (18), tighten, at this moment, air inlet thimble (4) is exerted pressure to plunger in the tire mouth, it is moved inwards, the interior air of tire is released enter alarm transmission device sealed gas chamber (5), under the air pressure effect, glued membrane (6) expands, move right and contact with movable conductive metal sheet (8), (8) can overcome acting force of the spring and move right under the normal pressure situation, separate with circular conductive metal sheet, make by lead (14), pressure power spring (24), annular arrangement conductive metal sheet (7), movable conductive metal sheet (8), the source switch that power spring (9) is formed disconnects, current interruption, and projector can not worked, at last, enter armed state with pointing to touch (16) and (17) simultaneously or after five minutes, automatically terminate its dormant state by internal circuit.

And after the impaired gas leakage of tire; when atmospheric pressure value is reduced to non-standard pressure; along with reducing of tire internal gas pressure; air in the air chamber that communicates with it (5) refluxes by air inlet thimble (4) again; air chamber (5) internal gas pressure reduces; so movable conductive metal sheet (8) is subjected to the pressure of the propelling thrust of power spring greater than air chamber (5); so be moved to the left; and combine with annular arrangement conductive metal sheet (7); make the electric current in the interior battery of projector pass through circuit smoothly; projector get electric after; transmitting radio numerical ciphers signal immediately under the control of smart circuit, quits work after launching for 0.5 second; promptly save power supply and protected the not long-term emission of reason and burning of circuit component again; simultaneously, the receptor of the same frequency password of device in operator's compartment sends and latchs warning, and accurately demonstrates the tire number of impaired gas leakage; can remove warning until pressing reset button: buzzer phone stops shouting, and the charactron demonstration is extinguished.

This patent feature is: under standard pressure or the battery of packing into when idle, projector is not worked, and is in power down mode.The pull up circuit plate is divided into three parts: high frequency power data transmission module, data coding module, intelligent power control module.They are sticked at plastic insulation (11) on every side by all purpose adhesive respectively.

Because tire is in operation and turns round in environment such as the rain of being everlasting, snow, water, does not influence the serviceability of projector in order to make above-mentioned factor, thus this product has been done water-proofing treatment, so do not establish manual power switch.The intelligent power control module is to solve this conceptual design just, and it has following effect: the automatic powered down sleep function when placing of (A) not working for a long time; (B) emission back automatic shutdown in 0.5 second function; (C) the inductive switch function of intelligent touch point.As before the tire mouth of packing into, with hand simultaneously touch sensible point (16) and copper screw stifled (15) (or connect with conductor), this moment as in when the normal voltage battery is housed, the projector internal circuit then can conducting, and the emission radio data signal, learn the existence and the dump energy thereof of battery thus; And after projector screws in the tire mouth, use hand touch sensible point (16) and (17) (or connect with conductor) again, then can make projector breaking dormancy state enter armed state, have alarm as receptor this moment, prove that then projector does not fix or the air pressure deficiency, should continue to tighten or tonifying Qi, till the receiver alarm free.Behind the normal barometric pressure tire mouth of packing into, flowing of rainwater can not make its internal circuit conducting, and influences normal operation.

Receptor can accurately show and presets the tire number: the A type can be monitored 10 tire numbers that show 0-9, and Type B can be monitored 40 tire numbers of demonstration 0-39.

Owing to use the model difference of tire, so the alarm pressure setting of this annunciator is also different, can be between 0.3-1.3Mpa regulated at will.

It is big that this projector is operated in the temperature difference throughout the year, in the strong motion environment, for guaranteeing its normal operation, so this projector vibration frequency stabilization parts are made with extra care by crystal resonator and SMD surface mount elements and are formed, frequency stabilization, anti-vibration, emissive power 5mW, transmitter power is 6V (four joint No. 0 button cell), and every projector is provided with a data code word number, and receiver power supply is a 12-24V automobile power of alterating and direct current, being regardless of positive consequent pole inserts, working current is less than 100mA, and every group of machine joined a cover password, do not disturb mutually to guarantee each user.

Projector and receiver operation frequency 315MHz (or selecting 433MHz for use), ambient temperature-40 ℃-+75 ℃, frequency stability 10 ^-5, maximum frequency deviation 5.0KHz, environment speed is 0-300 kilometer/hour.

Claims

A kind of wireless tire leakage alarm device, self-powered and can send encryption by several, the projector of data signal and be installed in the operator's compartment can be in the beeper acoustic alarm simultaneously, the decryption receiver that shows the emitter data font size on charactron constitutes, projector screws in and is installed on the tire admission piece, fix with jackscrew, its switching-on and switching-off state is by the control of tire pressure size, when the pressure in the tire is higher than projector alarm pressure design value, power supply is open circuit, projector is not worked, otherwise power supply is closed circuit, projector at once electric work and send wireless password signal, and shutdown automatically after 0.5 second, it is characterized in that:

A, projector have metal base (1) and plastic casing (2), pedestal (1) and air inlet thimble (4), glued membrane (6) and seal ring (10) are run through by miniature lock screw (25) and are fixed as one, pedestal (1) and air inlet thimble (4) also can be cast as one, there is screw thread to screw in mouth (3) in the pedestal (1), make it to link to each other with the tire mouth, air chamber (5), glued membrane (6), conducting strip (7), (8) and power spring (9) constitute the air pressure detector switch; Transmission circuit (12) sticks at insulator (11) periphery, link to each other with transmission circuit plate (12), power supply conductivity spring (20), pressure power spring (24) respectively by lead (14), constitute electric power loop by conduction disk (7), (8), power spring (9), adjusting pad (22), pressure regulating screw (21), negative thread conductive pole (23), battery (13), copper screw stifled (15) links to each other with power supply conductivity spring (20) with battery (13) negative pole respectively;

B, plastic casing (2) top have two intelligent touch points (16), (17) to link to each other with transmission circuit (12) respectively, be responsible for the self-test function of circuit, transmission circuit (12) comprises coding module, the high frequency power transmitter module, the intelligent power control module, pedestal (1) and plastic casing (2) and internal components is made respectively, assembling after after the die casting envelope be one.
2, annunciator according to claim 1 is characterized in that: when tire flat during to this projector alarm pressure preset value, just can get the electric radio signal of sending, alarm pressure preset value scope is adjustable 0.3-1.3Mpa.
3, annunciator according to claim 1 is characterized in that: projector is self-powered to be No. 0 twist button batteries of 4 joints, and voltage is 6V, and ambient temperature is-40 ℃-+75 ℃, and environment speed is 0-300 kilometer/hour.
4, annunciator according to claim 1 is characterized in that: receptor uses this car 12V-24V power of alterating and direct current, by being loaded in the operator's compartment, divides A and Type B, and the A type can be monitored 10 tires of demonstration simultaneously, and Type B can be monitored and be shown 40 tires.
5, annunciator according to claim 1, it is characterized in that: receptor and projector work are with frequently, be 315MHZ or 433MHZ, receptor is made of voltage stabilizer, data reception module, demoder, decoder, beeper music alarm circuit, buzzer phone, charactron telltale, source switch, reset switch, indicator lamp, supply hub, distribution, antenna and shell, and the enclosure semiconductor devices will be arranged and be welded on the printed circuit board (PCB) in order.