ITPA970022A1 - CAR ALARM RADIO CONSTITUTED BY A TRANSMITTER UNIT INSTALLED ON THE CAR EQUIPPED WITH AN IMPACT ALARM SENSOR - Google Patents

Description

TEXT OF THE DESCRIPTION

The industrial invention patent consists of a device or radio alarm for cars consisting of a transmitter unit installed on the car equipped with an alarm sensor for impact, vibration and / or lifting and a touch sensor for requesting driver presence and a Receiving unit or pocket micro-receiver equipped with rechargeable batteries weighing about sixty grams with alarm signal with colored LED, beep and / or vibrating system.

The transmitting unit and the receiving unit are controlled by suitably programmed microprocessors. The transmitting unit radiates a coded sample signal every fifteen seconds that will be decoded by the receiver to confirm the presence of the field and the correct operation of the two units.

The system is innovative as it is not affected by atmospheric discharges that occur during thunderstorms and air displacements and, more importantly, it can totally replace car alarms (traditional burglar alarms) which are based on an audible alarm that is often of intensity (expressed in dB) beyond the limits set by law.

Figure 1 describes the electrical and electronic diagram of the radio alarm for cars or motorcycles relative to the transmitting stage. It essentially consists of a vibration or displacement sensor with adjustable sensitivity of the ROLL-2 type (as per the wiring diagram of the transmitting stage in figure 1), a sensor readily available on the market which memorizes, once the circuit of the transmitting stage installed on the 'car, the final position of the car in a state of rest and, if this varies or is modified, due to impact, lifting and / or vibration, or for any other reason, it sends a signal to the ST62T10 type microprocessor (as per the stadium wiring diagram transmitter of figure 1) microprocessor easily available on the market that has a precise 8-bit timer, an 8-bit analog to digital converter, a series of input / output ports of which some are used (precisely those necessary for the purpose it aims to achieve our electronic circuit) and a digital watchdog.

The processor ST62T10 received the signal from the ROLL-2 sensor transforms it in turn and sends it to the TX-SAW BOOST 400MW (module in SMD technology operating on the 440 MHz range that delivers a maximum power of 400 MilliWatts as per the wiring diagram of the stage transmitter of figure 1) equipped with its own external antenna or output that will transmit the signal to the pocket receiver.

The transmitting system or stage also has an input that can be connected to a sensor (external alarm sensor input or other - as indicated in the wiring diagram in figure 1) which can be that of a traditional anti-theft alarm already existing on the car, or other external alarm or it can be connected to a touch sensor installed on any external part of the car, which can be activated by a person even unrelated to the car system, which has the purpose of requesting the presence of the driver.

Therefore the transmitter has an input for connection to an anti-theft device already existing on the vehicle, or for connection to another sensor; when this signal is sent from the transmitter to the receiver, it activates the green LED and the beep (piezoelectric buzzer) which will remain on until the receiver is reset.

The transmitter system is built in such a way that it can be connected to the car battery operating at a voltage of 12 volts DC. The transmitter has a range that goes beyond 600 meters in the absence of obstacles or screens such as metal armor of reinforced concrete with the external antenna to be installed on the vehicle (external door exit - as indicated in the wiring diagram in figure 1). The transmitter has a low power consumption (low usage current) and can therefore remain switched on all the time. For convenience and completeness we list below the electrical and electronic components, both in number and in type and all easily available on the market as they are produced by specialized companies in the sector, necessary to create the transmitting stage of the radio alarm for cars:

- number ten resistors of 10 KOhm;

- number four resistors of 100 KOhm;

- number five 4.7 KOhm resistors;

- number a 22 Ohm resistor;

- number one 47 KOhm trimmer;

- number two 22 pF capacitors;

- number one 100 KpF capacitor

- number two 10 KpF capacitors;

- number three 1 pF capacitors;

- 200 pF electrolytic number one;

- number two electrolytic of 100 pF;

- 47 pF electrolytic number three;

- number one microprocessor ST62T10;

- number one regulator 78L05;

- number five BC238 transistors;

- number one 8 MHz quartz;

- number thirteen 1N4 148 diodes;

- number one BC307 transistor;

- diode number one IN4007;

- number one TW-saw boost 400 MW;

- number one sensor type ROLL-2.

Figure 2 describes the electrical and electronic diagram of the radio alarm for cars or motorcycles relative to the receiving stage, or pocket micro-receiver.

It essentially consists of an RX-STD433 receiving module connected to an enamelled copper wire with a section of 0.80 m and a length of 8 cm, folded to the L with the function of internal antenna of the pocket receiver (used as per the wiring diagram of the radio alarm receiver stage pocket size of figure 2). The moduto RX-STD433 transforms the radio signal received from the antenna and coming from the transmitting section installed on the car and sends it to the microprocessor ST62T10 (used as per the wiring diagram of the pocket receiver stage radio alarm in figure 2) which activates one of the LEDs of the circuit:

- Activation of the yellow LED, indicated in the wiring diagram of the radio alarm for cars or motorcycles relative to the section or pocket receiver unit in figure 2 as LED G, plus beeps or piezoelectric buzzer that signals the car's out of range, and indicates with close flashes that the battery of the micro receiver needs to be recharged. If the battery is not recharged within a few minutes, the receiver will automatically switch off to avoid damaging the batteries. Furthermore, if the electric cable connecting the transmitter unit to the battery is cut or the antenna of the same unit is cut off, the yellow LED G plus beeps are activated.

- Activation of the red LED (LED R) plus beeps that provide the alarm signal for collision or lifting of the car (in the event that the car is hooked by the mobile crane). The red led stays on until the receiver is reset. In addition, the red LED (LED R) plus beeps is activated when the battery of the car on which the transmitter unit is installed is running low;

- Activation of the green LED (LED V) plus beeps which can be considered an alternate signal as it comes from the connection of the transmitter to an alarm that already exists on the car or to a touch sensor installed outside the car for the driver's presence request (this sensor requesting driver presence of about 2 cm per side can be applied to an external glass of the car by means of a bio-adhesive and works with a capacitive effect, when you place your hand on the glass of the car in correspondence with the indicated sensor-plate) . The green led stays on until the receiver is reset.

The beep of the red, green and yellow led can be integrated by any vibrating system among those available on the market.

The receiver has an autonomy of 48 hours with rechargeable batteries both at home and in the car through a small socket and a plug connected to a traditional battery charger.

To reset the receiver you have to turn it off and then on again.

Receiver and transmitter have an operating range in UHF of 433.900 MHz (frequency approved for radio controls) with output power from the transmitter of 400 milliWatts.

For convenience and completeness we list below the electrical and electronic components, both in number and in type and all easily available on the market as they are produced by specialized companies in the sector, necessary to create the radio-alarm receiver stage for cars:

- number a 10 KOhm resistor;

- three 470 Ohm resistors;

- number one capacitor of 100 KpF;

- number two 22 pF capacitors;

- number one 1 pF tantalum;

- number one 10 pF tantalum;

- number eight diodes 1N4148;

- number three yellow, green and red LEDs;

- number one 8 Mhz quartz;

- number one module RX-STD433;

- number one microprocessor STD62T10;

- number one REF. 25Z (voltage stabilizer); - number one piezoelectric buzzer:

- number one rechargeable battery of 4.8 volts, 110 mA.

Claims (1)

Claims: Device or radio alarm for cars (as described in the electrical and electronic diagrams of figures 1 and 2 and which are claimed as such as electrical and electronic circuits that have the characteristics of use and use that are shown below) consisting of a transmitter unit installed on the car equipped with an alarm sensor for impact, vibration and / or lifting and a touch sensor for requesting the driver's presence and a receiver unit or pocket micro-receiver equipped with rechargeable batteries weighing about sixty grams with alarm signal with colored LED, beep and / or vibrating system. Figure 1 describes the electrical and electronic diagram of the radio alarm for cars or motorcycles relative to the transmitting stage. It essentially consists of a vibration or displacement sensor with adjustable sensitivity of the ROLL-2 type (sensor readily available on the market - used as per the wiring diagram of the transmitting stage in figure 1) which memorizes, once the circuit of the transmitting stage has been activated installed on the car, the final position of the car in a state of rest and, if this varies or is modified, due to impact, lifting and / or vibration, or for any other reason, it sends a signal to the microprocessor of the ST62T10 type (microprocessor easily available in trade - used as per the wiring diagram of the transmitting stage in figure 1) which has a precise 8-bit timer, an 8-bit analog to digital converter, a series of input / output ports some of which use (those necessary for the purpose of our electronic circuit) and a digital watchdog. The ST62T10 microprocessor receives the signal from the ROLL-2 sensor and transforms it on time to send it to the TX-SAWBOOST 400MW (SMD technology module, which operates on the 440MHz range which delivers a maximum power of 400MilliWatt - as the electrical diagram of the transmitter with its own transmitter signal 1). The transmitting system or stage also has an input that can be connected to a sensor indicated in the electrical diagram (Figure 1 as an external alarm sensor input or other) which can be that of a traditional anti-theft alarm already existing on the car, or other external alarm, or it can be connected to a touch sensor installed on any external part of the car, which can be activated by a third party. auto-system, which has the purpose of requiring the presence of the driver. Therefore, the transmitter has an input for connecting to an alarm that already exists on the middle, or connecting to another sensor; this signal when it is sent by the transmitter to the active receiver and the green beep (buzzer) which will remain on until the receiver is reset. The transmitter system is built in such a way that it can be connected to the car battery operating at a voltage of 12 volts DC. The transmitter has a range that goes beyond 600 meters in the absence of obstacles or screens such as metal armor of reinforced concrete with the external antenna that can be installed on the vehicle. The transmitter has a low power consumption (low usage current) and can therefore remain switched on at all times. Figure 2 describes the electrical and electronic diagram of the radio alarm for cars or motorcycles relative to the receiving stage or pocket micro-receiver. It essentially consists of an RX-STD433 receiving module connected to an enameled copper wire with a section of 0.80 mm and length 8 cm, folded to the L with the function of internal antenna of the pocket receiver (used as per the wiring diagram of the radio alarm receiver stage pocket size of figure 2). The moduto RX-STD433 transforms the radio signal received at the antenna and coming from the transmitting section installed on the car and sends it to the microprocessor ST62T10 (used as per the wiring diagram of the pocket receiver stage radio alarm in figure 2) which activates one of the LEDs of the circuit: - Activation of the yellow LED, indicated in the wiring diagram of the radio alarm for cars or motorcycles relative to the section or pocket receiver unit in figure 2 as LED G, plus beeps or piezoelectric buzzer that signals the car's out of range, and indicates with close flashes that the battery of the micro receiver needs to be recharged. If the battery is not recharged within a few minutes, the receiver will automatically switch off to avoid damaging the batteries. Furthermore, if the electrical cable connecting the transmitter unit to the battery is cut or the antenna of the same unit is cut off, the yellow LED G plus beeps are activated. - Activation of the red LED (LED R) plus beeps that provide the alarm signal for collision or lifting of the car (in the event that the car is hooked by the mobile crane). The red led stays on until the receiver is reset. In addition, the red LED (LED R) plus beeps is activated when the battery of the car on which the transmitter unit is installed is running low; - Activation of the green LED (LED V) plus beeps which can be considered an alternate signal as it comes from the connection of the transmitter to an alarm that already exists on the car or to a touch sensor installed outside the car for the driver's presence request (this sensor for driver presence request of about 2 cm per side can be applied to an external glass of the car by means of a bio-adhesive and works with a capacitive effect, when you place your hand on the glass of the car in correspondence with the indicated sensor-plate. The green LED stays on until the receiver is reset The red, green and yellow LED beeps can be integrated by any vibrating system among those available on the market. The receiver has an autonomy of 48 hours with rechargeable batteries both at home and in the car through a small socket and a plug connected to a traditional battery charger.