CN1426910A

CN1426910A - Motor vehicle tyre leackage full antomatic radio alarming apparatus

Info

Publication number: CN1426910A
Application number: CN 02125008
Authority: CN
Inventors: 孙锋利
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-17
Filing date: 2002-06-22
Publication date: 2003-07-02

Abstract

A radio-type full-automatic leakage alarm for tyre of motor-driven vehicle is composed of a miniature radio transmitter fixed to air valve of tyre, a switch controlled by the air pressure in tyre and a radio receiver installed in the driver cab. When the air pressure in tyre is reduced to a threshold due to leakage, the switch is triggered to turn on the radio transmitter for transmitting leakage signal. The signal is received by the said receiver to generate an audio alarm which indicating corresponding numerals.

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 of reporting to the police 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 back 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.

Fastening base (1) with mould shell (2) outward and be press-sealed in one, by air inlet thimble (4) is housed, glued membrane (6), conduction disk (7), (8) and power spring (9) constitute the air pressure detector switch, mould outward insulator (11) is arranged in the shell (2), (11) peripheral per ultra micro circuit cards of 120 ° of cementations (12), totally three, be furnished with the microelectronics accessory on the circuit card, constitute transmission circuit, insulator (11) inner chamber is equipped with four No. 0 button cells (13), by lead (14), plug (15) constitutes electric power loop, intelligence touch point (16) constitutes inductive switch with plug (15) and (16) with (17), be used for detecting the serviceability of projector and remove the emitter dormant state, (18) lose for anti-, antitheft top wire hole, (19) are interior hexagonal jackscrew.Receiver is satisfied with in the operator's compartment, uses this car power supply, is wireless data demodulation mode of operation.

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); Signal pig-tail wire (10); Plastic insulation (11); Transmission circuit plate (12); Battery (13); Lead (14); Copper sieve plug (15); Anti-ly lose, antitheft top wire hole (18) intelligence touch point (16), (17), anti-ly lose, antitheft in hexagonal jackscrew (19).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, and moves right to contact with movable conductive metal sheet (8), and (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), 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, touching (16) and (15) simultaneously with finger makes its internal circuit breaking dormancy state and enters armed state.

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 gas injection chamber (5) that communicates with it 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 under the control of smart circuit, quits work after 0.5 second after the emission immediately; 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 power consumption has only 0.2 microampere of electric current, is equivalent to battery from power consumption.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 patent 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 sieve plug (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, should continue to tighten, 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.

Not disturb mutually in order making between each user, when this annunciator dispatches from the factory, to have preset the user more than 7000 kinds and distinguished sign indicating number.

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

Owing to use the model difference of tire, so the alarm pressure setting of this annunciator is also different, between 0.3-0.8Mpa.

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,, this projector vibration frequency stabilization parts form frequency stabilization so being made with extra care by crystal resonator and SMD surface mount elements, anti-vibration, emissive power 10mW, transmitter power are 6V (No. 0 button cell of four joints), and receiver power supply is a 12-24V automobile power of alterating and direct current, be regardless of positive consequent pole and insert, working current is less than 1.0A.

Projector and receiver operation frequency 315MHz (or selecting 433MHz for use), operating temperature-40 ℃-+75 ℃, frequency stability 10 ^-5, maximum frequency deviation 5.0KHz.

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; I _C1Be coding module; F ₂₀₁Be 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 I _C2Output 5V voltage is to circuit after the voltage stabilizing.

J ₂₀₂Be data reception module, I _C3Be demoder, I _C4For triggering latch.

I _C5It is warning music private circuit; I _C6It is decoder.

I _C7Be LED charactron telltale, HA is a buzzer phone.

Claims

1, a kind of wireless tyre leak alarm, projector screws in and is installed on the tire mouth, lose with anti-, antitheft jackscrew is fixed, projector has metal base (1) and moulds shell (2), by air inlet thimble (4), glued membrane (6), conductive metal sheet (7), (8), power spring (9) is formed the air pressure detector switch, mould the interior insulator (11) of shell and be peripherally equipped with three ultra micro circuit cards (12), be respectively the intelligent power control module, data coding module, the data transmission module, the insulator inner chamber is equipped with four joint No. 0 button cells (13), mould the shell outer end by intelligent touch point (16), soft-touch control is formed in plug (15) and (17), touch (16) simultaneously with hand, (15) be used for detecting emitting performance, touch (16) simultaneously with hand, (17) come the breaking dormancy state and enter armed state, receiver is connected in the operator's compartment, use automobile power source, transmit-receive cofrequency, frequency of operation 315MHz (or selecting 433MHz for use) projector emission state is controlled by tire pressure, when tire flat, the air pressure detector switch is connected power supply automatically, transmit to receptor, receptor can latch warning, the prompting that pipes reaches and demonstrate flat numbering function on the data pipe, press reset key and can remove warning, according to the tyre model difference, the projector alarm pressure is 0.3-0.8MPa.

2, annunciator according to claim 1, its main feature is: can realize Based Intelligent Control, the projector of the battery of packing into is not worked when idle be in dormant state, little power consumption, consumption of current is equivalent to the battery consumable; (B) automatic shutdown in 0.5 second function in emission back has realized economize on electricity; (C) under no atmospheric pressure state, by with hand simultaneously to the contact of intelligent touch point (16) and copper sieve plug (15), the projector examination is transmitted, under air pressure conditions with hand touch (16) simultaneously, (17) can make emitter breaking dormancy state and enter armed state and air-tightness detection effect, this is the feature of this patent maximum.

3, annunciator according to claim 1, it is characterized in that: the projector working power is No. 0 button cells of 4 joints, operating voltage is 6V, and power is 10mW, from power consumption 0.2uA, receptor is the 12-24V power of alterating and direct current, access is regardless of positive consequent pole, and the receiver operation electric current is less than 1.0A, and receptor divides singledigit pipe display type (A type) and two two kinds of models of charactron display type (Type B), the A type can show 10 tire numbers of 0-9, and Type B can show 40 tire numbers of 0-39.

4, annunciator according to claim 1 is characterized in that: do not disturb mutually for making between each group alarm device, this annunciator spy is provided with the password more than 7000 kinds.

5, annunciator according to claim 1 is characterized in that: projector employing sound table Frequency Stabilization Technique design, stable work in work is made by SMD surface mount elements precision, projector and receiver operation temperature-40 ℃-+75 ℃, frequency stability: 10 ^-5, maximum frequency deviation: ± 5.0KHz, shockproof, anti-muddy water, antitheft.