CN101975899B - Method for detecting action current curve of switch machine - Google Patents

Abstract

The invention provides a method for detecting the action current curve of a switch machine, which includes the following steps: monitoring the three-phase input current of the switch machine, if any phase current value is greater than the current threshold I1, and within a subsequent time, the When the phase current values are greater than the current threshold I1, it is considered that the switch machine starts to operate, record the current time, and push forward a certain time from the current time as the real start point of the switch machine action; the switch machine has started, continue to monitor the switch The three-phase input current of the switch machine, if the current value of the three-phase input current is less than the current threshold value I2, it is regarded as the switch machine stop action, record the current time, and push back a certain time from the current time as the real stop point of the switch machine; From the real start point of the switch machine to the real stop point of the switch machine, the current value data of the three-phase input current in this period constitutes the operating current curve of the switch machine. The method has the advantages of simple steps, strong practicability and high reliability.

Description

Detection method of operating current curve of switch machine

technical field

The invention relates to a detection method, in particular to a detection method for the operating current curve of a switch machine, and belongs to the technical field of railway signal monitoring.

Background technique

At present, the detection of the operating current curve of the switch machine needs to collect the state of the relevant relay of the switch machine; 1DQJ is the starting relay of the switch machine, and generally the lower contact of 1DQJ is collected. When 1DQJ is picked up, the switching value is invalid. When 1DQJ The switch value is valid when the 1DQJ is picked up, the switch machine starts to act when the 1DQJ is picked up, and the switch machine stops when the 1DQJ is dropped. ; But in the fully electronic interlocking station, there is no switch machine starting relay, therefore, the general detection method for the operating current of the switch machine cannot be applied in the fully electronic interlocking station, which will cause serious damage to the detection of the operating current of the fully electronic interlocking switch machine. difficulty.

Contents of the invention

Aiming at the deficiencies of the prior art, the invention provides a method for detecting the operating current curve of a switch machine with simple steps, strong practicability and high reliability.

The technical scheme adopted in the present invention is as follows: a method for detecting the operating current curve of a switch machine, the method comprising the following steps:

Step 1. Monitor the three-phase input current of the switch machine. If the current value of the input current of any phase is greater than the current threshold I1, and within the subsequent time T1, the current value of the input current of this phase is greater than the current threshold I1 When the switch machine starts to act, record the current time T2, and advance the time T3 from the current time T2, that is, take the time point T4=T2-T3 as the real starting point of the switch machine action;

Step 2. The switch machine has been started. Continue to monitor the three-phase input current of the switch machine. If the current value of the three-phase input current is less than the current threshold I2, it is considered that the switch machine stops operating, and the current time T5 is recorded. Time T6 is pushed back from time T5, that is, the time point T7=T5+T6 is taken as the real stop point of the switch machine;

Step 3. From the real start point of the switch machine to the real stop point of the switch machine, the current value data of the three-phase input current during this time period, that is, the three-phase input current between time point T4 and time point T7 The current value data constitutes the operating current curve of the switch machine;

Wherein, the current threshold I1, the time T1, the time T3, the current threshold I2, and the time T6 are all obtained from electrical parameters of the switch machine.

Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the method for detecting the operating current curve of the switch machine breaks away from the dependence on the relay. Only by monitoring the input current of the switch machine, the Extracting the operating current curve of the switch machine in the fully electronic interlocking station does not need to monitor the relays related to the switch machine, which meets the monitoring requirements of the fully electronic interlocking station for the operating current curve of the switch machine; the method has steps The advantages of simplicity, strong practicability and high reliability.

Detailed ways

The technical solutions of the present invention will be described in further detail below through specific implementation methods.

A switch machine operating current curve detection method, characterized in that the method comprises the following steps:

Step 1. Monitor the three-phase input current of the switch machine. If the current value of the input current of any phase is greater than the current threshold I1, and within the subsequent time T1, the current value of the input current of this phase is greater than the current threshold I1 When the switch machine starts to act, record the current time T2, and advance the time T3 from the current time T2, that is, take the time point T4=T2-T3 as the real starting point of the switch machine action;

Step 2. The switch machine has been started. Continue to monitor the three-phase input current of the switch machine. If the current value of the three-phase input current is less than the current threshold I2, it is considered that the switch machine stops operating, and the current time T5 is recorded. Time T6 is pushed back from time T5, that is, the time point T7=T5+T6 is taken as the real stop point of the switch machine;

Step 3. From the real start point of the switch machine to the real stop point of the switch machine, the current value data of the three-phase input current during this time period, that is, the three-phase input current between time point T4 and time point T7 The current value data constitutes the operating current curve of the switch machine;

Wherein, the current threshold I1, the time T1, the time T3, the current threshold I2, and the time T6 are all obtained from electrical parameters of the switch machine.

This method does not need to monitor the state of the relays related to the switch machine, only through the monitoring of the three-phase input current of the switch machine, and through scientific calculations, the action current of the switch machine can be extracted. In the electronic interlocking station.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (1)

1. goat action current curve detection method is characterized in that this method may further comprise the steps:

The three-phase input current of step 1, monitoring goat is if the current value that arbitrary phase input current is arranged is greater than current threshold I1, and in later time T1; The current value of this phase input current is during all greater than said current threshold I1; Be regarded as goat and begin action, record current time T2, and by pushing away time T 3 before the current time T2; That is, with the real start-up point of time point T4=T2-T3 as the goat action;

Step 2, goat start; Continue the three-phase input current of monitoring goat; If during all less than current threshold I2, being regarded as goat, the current value of three-phase input current stops action, record current time T5; By current time T5 pusher time T 6, be about to the real halt of time point T7=T5+T6 as goat;

Step 3, from the real start-up point of goat to the real halt of goat; The current value data of the three-phase input current in this time period, promptly time point T4 constitutes the action current curve of goat to the current value data of the three-phase input current between the time point T7;

Wherein, said current threshold I1, said time T 1, said time T 3, said current threshold I2, said time T 6 are all taken from the electric parameter of said goat.