Aim To introduce some measures of improving software reliability in designing the monitor and detection system of railroad power transmission network. Method Emphasis is placed on the method of linear interpolation which can enhance the veracity of collected data. Some other noise resistive measures of software

such as digital filtering

data auto-resumption and "watchdog" are roughly described. Results The relevant monitor system software has been designed. Conclusion The noise resistive performance of system can be enhanced after taking these reliable measures.