JPH1061537A - Remote control engine starter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate installation on a manual transmission vehicle by installing a micro computer in the vehicle, and holding a sleeve condition between a time until an engine is started and a gear is set to a parking position, a neutral position, or a release position. SOLUTION: When a micro computer which consists of a control circuit for forming an engine start signal, decoding a code, and starting an engine is turned on, it is judged whether the computer is power-on-reset or not (S100). In case of 'power-on-reset', it is judged whether the sleep condition of the micro computer is released or not (110). When it is judged that the sleep condition is not released, its condition is set to the sleep condition, and it is judged whether an engine is started or not (S120). In the case of 'start', an input signal is inputted from a parking brake detecting circuit (S130). In the case where a gear is positioned on a parking position, the sleep condition of the micro computer is reset (S140), and a step is moved to normal operation (S20).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control engine starter having a burglarproof function having a function of starting an engine by remote control and having an ID code as a burglarproof function.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a conventional engine starter for an A / T vehicle by remote control. In the figure, reference numeral 1 denotes a portable transmitter of a remote control engine starter having an engine start button and an engine stop button. Reference numeral 2 denotes a fixed receiver of a remote control engine starter that receives transmission data including an ID (identification, same confirmation) code transmitted from the portable transmitter 1. Also,
Reference numeral 3 denotes an antenna of the portable transmitter 1, and reference numeral 4 denotes an antenna of the fixed receiver 2.

[0005] A code decoding circuit 5 decodes an ID code in the received data received by the fixed receiver 2 and matches the ID code with an ID code registered in the ID code memory 8 in advance. This is to determine whether or not to do so.

Therefore, the code decoding circuit 5 compares the extracted ID code with an ID code registered in an ID code memory 8 by a code extracting circuit 6 for extracting an ID code from the received data. And a code comparing circuit 7 for determining whether or not they are in compliance with each other.

A key switch detection circuit 9 detects whether a key is inserted into an ignition switch for starting the engine, a door switch detection circuit 10 detects a door blockage, and a parking switch 11 is operated when a parking brake is applied. Parking brake detection circuit for detecting that
2 is a parking range detection circuit for detecting whether a gear is in the parking position, 13 is a hood hood switch detection circuit for detecting whether the hood is open, and 14 is an H level state of the L terminal of the engine starter. In the regulator L terminal detection circuit for detection, these detection outputs are input to an engine start signal creation circuit 15 described later, and it is determined whether all of these various outputs are in an abnormal state.

Reference numeral 15 determines that no abnormal condition is detected based on the detection outputs from the detection circuits 9 to 14, and that the code decoding circuit 5 determines that the ID codes match. If it is determined that a signal indicating an engine start command has been transmitted from No. 1,
An engine start signal generation circuit that generates an engine start signal including a battery signal, an ignition signal, an ACC (accessory) signal, and a starter signal and outputs the generated signal to an engine start control circuit 16.
5, the code decoding circuit 5, and the engine start control circuit 16 are constituted by microcomputers.

Reference numeral 17 denotes the engine start control circuit 1
An engine ignition circuit that receives the control output from 6 and controls the ignition of the engine. Reference numeral 18 denotes an F code memory in which F (function) codes for instructing the contents of engine start and engine stop instructions are registered.

Next, the engine start signal generating circuit 15
The operation of the microcomputer including the code decoding circuit 5 and the engine start control circuit 16 will be described with reference to the flowchart of FIG. That is, when the ignition switch is turned on in the vehicle and power is supplied, the engine start signal generation circuit 15, the code decoding circuit 5, and the engine start control circuit 16 start operating, and proceed from step 10 to step 20, It is determined whether or not the ID code and the F code have been supplied from the fixing receiver 2 to the code extraction circuit 6.
Return to

If it is determined that the data has been received, step 3
The process proceeds to 0, where the ID code and the F code are decoded, and the process proceeds to step 40. In step 40, the ID code memory 8,
By reading the ID code and the F code stored in the F code memory 18, the code comparison circuit 7 compares the ID code and the F code to determine whether the ID code is a valid ID code. Return to 20.

If it is determined in step 40 that the ID code is a valid ID code, the process proceeds to step 50. Step 50
Then, the detection outputs from the various detection circuits 9 to 14 are input,
Step 6 determines whether the detected output is at a predetermined level, that is, whether the engine start condition is satisfied.
0, and when it is determined that the level is satisfied and at a predetermined level, the code comparison circuit 7 sends the engine start signal generation circuit 1
5 is instructed to generate an engine start signal. In step 70, an engine start signal is generated. In step 80, the battery signal, the ignition signal, the ACC (accessory) signal, and the starter signal are output during a predetermined time. These are sequentially generated and supplied to the engine ignition circuit 17. If it is determined in step 60 that the engine start condition is not satisfied and the detected output is not at the predetermined level, the process returns to step 20. When it is determined in step 30 that the F code is a signal for instructing engine stop, the engine start control circuit 16 stops the engine start output to the engine ignition circuit 17.

Next, the operation will be described. In this engine start device, when an engine start signal having an ID code exclusive for a vehicle owner is transmitted from the portable transmitter 1 by operating an engine start button, the signal is transmitted to the antenna 3,
4 and received by the fixed receiver 2, and the above-mentioned specific ID code, F
The code is extracted. The extracted ID code and F code are compared by the code comparison circuit 7 with the reference ID code and F code registered in the ID code memory 8 and the F code memory 18, respectively. Switch detection circuit 9 to regulator L terminal detection circuit 14
An engine start command is input to the engine start signal creation circuit 15 on condition that each of the detected outputs indicates that the engine is in the normal state and satisfies the engine start condition.

Therefore, the engine start signal generating circuit 15
Indicates to the engine start control circuit 16 an ignition signal, an ACC (accessory) signal,
A starter signal is output, and based on these outputs, the engine start control circuit 16 outputs an engine ignition signal to the engine ignition circuit 17 to ignite the engine. Also, a signal for instructing the engine to be stopped is transmitted from the portable transmitter 1 to the fixing receiver 2 together with the ID code, and the ID code is valid in the code comparison circuit 7 and is a regular signal for instructing the engine to be stopped. When the determination is made, the output of the engine start signal to the engine ignition circuit 17 is stopped.

[0013]

However, in such a conventional remote control engine starter for an A / T car, for example, the parking range detecting circuit 12 is a switch having a simple structure such as a limit switch. By attaching the remote control engine starter of the A / T vehicle to a manual vehicle and connecting the terminal connected to the parking range detection circuit 12 to a power line (or an earth line), the remote control engine starter for the A / T vehicle can be mounted on the manual vehicle. Could easily create a very dangerous situation.

The present invention has been made in view of the above problems, and has as its object to provide a remote control engine starter for an A / T vehicle which cannot be easily mounted on a manual vehicle.

[0015]

According to the present invention, at least a gear is set to a position where the engine can be started when the receiver receives a signal indicating the start of the engine from the transmitter. Only in the case of a remote control engine starter comprising a microcomputer for generating an engine start signal,
The microcomputer stays asleep until the receiver is mounted on the vehicle, the engine is first started, and the gear is put into the parking or neutral position or disengaged, the gear is in the parking position, Or can be put in neutral position,
Alternatively, the sleep state is released depending on whether or not the user is removed.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 shows a flowchart of the present invention corresponding to the flowchart of the microcomputer constituting the engine start signal generating circuit 15, the code decoding circuit 5, and the engine start control circuit 16 shown in FIG. 3, and is shown in FIG. Since a portion A indicated by a broken line is added to the above, only that portion will be described below.

(1) First, when the remote control engine starter is attached to the vehicle for the first time, the remote control engine starter does not operate even when the power is connected and the engine start signal is transmitted from the portable transmitter 1. So
The case where the connection terminal is attached to a predetermined position of the A / T vehicle, that is, as shown in FIG. 2, will be described below. In step 100, it is determined whether or not the microcomputer constituting the engine start signal generation circuit 15, the code decoding circuit 5, and the engine start control circuit 16 is powered on by being supplied with power, and the power on reset is performed. If it is not determined that
Returning to step 100, if it is determined that the power-on reset has been performed, the process proceeds to step 110. Step 1
At 10, it is determined whether or not the sleep state of the microcomputer has been released. If it is determined that the sleep state has been released, the process proceeds to step 20, and the operation proceeds to the operation described in FIG.

On the other hand, if it is determined in step 110 that the microcomputer has not been released from sleep, the microcomputer is set to the sleep state, and the routine proceeds to step 120. In step 120, it is determined whether or not the engine has been started, that is, whether or not the engine start signal has been created in the engine start signal creation circuit 15. If it is determined that the engine start signal has not been created, the process returns to step 100. When it is determined that the engine start signal is generated, the process proceeds to step 130,
When a detection signal is input from the parking brake detection circuit 11 (or the neutral detection switch) and it is determined that the gear is engaged at the parking position and the output level is inverted, the sleep state of the microcomputer is reset at step 140. ., The operation proceeds to step 20. If the detected output level is not inverted, the process returns to step 100. Thereafter, the operation is performed according to the same flowchart as that described in FIG.

(2) The state after the remote control engine starter is mounted on the vehicle will be described. Since it is determined in step 110 that the microcomputer has been released from the sleep state, the process proceeds to step 20 and shifts to normal operation.

[0020]

As described above, according to the present invention, it is possible to obtain a remote control engine starter which is difficult to be mounted on a manual vehicle, and to prevent the erroneous assembly.

[Brief description of the drawings]

FIG. 1 is a flowchart of a microcomputer of a remote control engine starter showing an embodiment of the present invention.

FIG. 2 is a circuit block diagram for explaining the entire system of the remote control engine starter.

FIG. 3 is a flowchart of the microcomputer in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable transmitter 6 Code extraction circuit 7 Code comparison circuit 8 ID code memory 9 Key switch detection circuit 10 Door switch detection circuit 11 Parking brake detection circuit 12 Parking range detection circuit 13 Bonnet hood switch detection circuit 14 Regulator L terminal detection circuit 15 Engine start signal generation circuit 16 Engine start control circuit

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location F02D 29/02 F02D 29/02 H 45/00 345 45/00 345L F02N 15/00 F02N 15/00 F

Claims (1)

[Claims] 1. A microcontroller for generating an engine start signal only when a gear is set to a position enabling engine start when a signal indicating start of engine start is received from a transmitter by a receiver. In a remote control engine starter comprising a computer, the microcomputer has a receiver attached to a vehicle,
The sleep state is maintained until the engine is first started and the gear is put into the parking position or neutral position or disengaged, and the gear is put into the parking position or neutral position or disengaged A remote control engine starter characterized in that the sleep state is canceled by the above.