Waveform signal output device and method for driving solenoid valve

1. A waveform signal output device for driving a solenoid valve, the waveform signal output device comprising:

a signal output unit that reads waveform data recorded in a memory and outputs a waveform signal for driving the solenoid valve according to a waveform renewal signal;

a waveform generation unit that generates waveform data for driving the solenoid valve using vehicle driving information and requests renewal of a waveform by outputting the waveform data;

a waveform distortion determination unit that compares a time point when the renewal of a waveform is requested and a preset communication prohibition section and determines a possibility of distortion of the waveform signal; and

a driving command unit that renews waveform data of the memory using the waveform data generated by the waveform generation unit and outputs a waveform renewal signal if it is determined that there is no possibility of distortion.

2. The waveform signal output device of claim 1 , wherein the driving command unit searches for a time point when renewal of a waveform is allowed using a search signal having a predetermined communication period without renewing the waveform data if it is determined that distortion of a waveform occurs.

3. The waveform signal output device of claim 2 , wherein the driving command unit renews the waveform data of the memory using the waveform data generated from the waveform generation unit at a time point when the renewal of the waveform is allowed.

4. The waveform signal output device of claim 2 , wherein the period of the search signal is set to be shorter than a period in which the renewal of the waveform is requested.

5. The waveform signal output device of claim 1 , wherein the communication prohibition section is set to be longer than a time period in which the signal output unit reads the waveform data from the memory.

6. A waveform signal output method for driving a solenoid valve, the waveform signal output method comprising:

generating waveform data for driving the solenoid valve using vehicle driving information and requesting renewal of a waveform by outputting the waveform data by a waveform generation unit;

comparing a time point when the renewal of a waveform is requested and a preset communication prohibition section and determining a possibility of distortion of the waveform signal by a waveform distortion determination unit;

renewing waveform data of a memory using the waveform data generated by the waveform generation unit and outputting a waveform renewal signal if it is determined that there is no possibility of distortion by a driving command unit; and

reading waveform data recorded in the memory and outputting a waveform signal for driving the solenoid valve according to a waveform renewal signal by a signal output unit.

7. The waveform signal output method of claim 6 , wherein renewing waveform data of the memory using the waveform data generated by the waveform generation unit and outputting a waveform renewal signal by the driving command unit comprises searching for a time point when renewal of a waveform is allowed using a search signal having a predetermined communication period without renewing the waveform data if it is determined that distortion of a waveform occurs.

8. The waveform signal output method of claim 7 , further comprising:

after searching a time point when the renewal of the waveform is allowed, renewing the waveform data of the memory using the waveform data generated from the waveform generation unit at a time point when the renewal of the waveform is allowed.

9. The waveform signal output method of claim 7 , wherein the period of the search signal is set to be shorter than a period in which the renewal of the waveform is requested.

10. The waveform signal output method of claim 6 , wherein the communication prohibition section is set to be longer than a time period in which the signal output unit reads the waveform data from the memory.