JP2013001364A - Checking apparatus for crossing warning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform functional checking of a warning sound generator, an intermittent relay, a speaker, and a waning lamp and to perform circuit checking of cable lines, to thereby enhance reliability of a crossing warning device.SOLUTION: A test signal is sent from an alternating current continuity test unit 10 to a speaker 4, and from a direct current continuity test unit 11 to an alarm lamp 5. When a train is not present in a crossing warning section, a circuit is configured by an alternating current continuity test unit, a contact configuration 18, a line 6, and the speaker, and an alternating current measurement unit 12 is connected to a circuit of the line 6 to measure the test signal. When a train is present in the crossing warning section, a circuit is configured by the warning sound generator 2, the contact configuration 18, the line 6, and the speaker, and an output of the warning sound generator 2 is measured by the alternating current measurement unit 12 connected to the circuit of the line 6. A circuit is configured by an intermittent relay 3, a contact configuration 19, a line 7, and the warning lamp 5, and an output of the intermittent relay 3 is measured by a direct current measurement unit 13 connected to a circuit of the line 7. The measured data are received by a data determination processing unit 14. By comparing standard data during a normal operation and measured data constantly received, it is determined and confirmed whether it is normal or abnormal based on comparative values and a warning is output.

Description

The present invention relates to an improvement in the reliability of railroad crossing safety equipment, particularly a railroad crossing alarm in a railway.

FIG. 3 is a configuration diagram of a conventional railroad crossing alarm. In a railroad crossing alarm, when there is no train in the railroad crossing warning section, the coil of the alarm control relay R1 is excited, and the alarm sound generator 2 and the intermittent relay 3
, The speaker 4 and the warning lamp 5 stop operating, the train of the alarm control relay R1 is de-energized when the train is in the railroad crossing warning section, the alarm sound generator 2 and the intermittent relay 3 operate, the cable line 6 and the cable The speaker 4 sounds through the line 7, and the warning lamp 5 blinks and flashes.

During the series of operations of the railroad crossing alarm, there is no warning sound from the speaker 4, or when the warning lamp 5 is not flashing flashing, it is due to an abnormality in the warning sound generator 2 or the intermittent relay 3.
Whether the cable line 6 and the cable line 7 are short-circuited or disconnected is not confirmed.
Further, even if an individual abnormality of the level crossing alarm device, a short circuit between the cable line 6 and the cable line 7 or disconnection occurs when the train is absent in the level crossing alarm section, it cannot be confirmed.

In this apparatus, when any of the alarm sound generator 2, the speaker 4, the intermittent relay 3, and the alarm lamp 5 is abnormal, or when the cable line 6 and the cable line 7 are short-circuited or disconnected, promptly. It is desired to detect and confirm the location of the abnormality.

JP 2010-089666 A

The present invention is made to meet this demand, and when there is no train in the railroad crossing warning section, it is possible to check for abnormalities in speakers, warning lamps, and short-circuiting or disconnection of cable lines,
Level crossing alarm function confirmation device that can be easily installed at low cost as well as check for alarm sound generators, intermittent relays, speakers, warning lamps and shorts and breaks in cable lines when the train is in the railroad crossing section Is intended to provide.

The level crossing alarm function confirmation device of the present invention has an AC continuity test unit, a DC continuity test unit, a switching relay circuit unit, an AC measurement unit, a DC measurement unit, and a data determination processing unit.
The AC signal is generated and output intermittently and sent to the speaker. The DC continuity test unit generates and outputs a pulse signal to the extent that the warning lamp does not emit light and sends it to the warning lamp. It has a relay RT, and when there is no train in the railroad crossing alarm section, the circuit of the AC continuity test section, cable line and speaker, DC continuity test section, cable line and warning lamp via the front contact of the switching relay RT And the circuit is configured, and when the train is in the railroad crossing warning section,
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Via the back contact of the switching relay RT, a circuit is constituted by an alarm sound generator, a cable line and a speaker circuit, an intermittent relay, a cable line and an alarm lamp, and the switching relay RT
The circuit configuration is switched through the contact of the switching relay RT by the operation of the AC relay, and the AC measuring unit is connected to the circuit between the common contact of the switching relay RT and the speaker, and the operation of the switching relay RT and the alarm The output signal to the sound generator is measured, and the DC measuring unit is connected to a circuit between the common contact of the switching relay RT and the alarm lamp, and the operation of the switching relay RT causes the DC continuity testing unit and the intermittent relay to be connected. The output signal is measured, and the data determination processing unit receives the measurement data of the AC measurement unit and the DC measurement unit, stores the measurement data in the normal state as reference data, and compares the measurement data received at all times with the reference data. Based on the comparison value, it is judged whether it is normal or abnormal, and an alarm is output. When the parallel dual switching relay RT does not match, the coil of the coincidence relay PT is de-energized, Operation relay contacts PT is opened, characterized in that to prevent the crosstalk of the outputs of the DC continuity test unit of output and intermittent relay AC continuity test unit and the output of the warning sound generator.

According to the present invention, when there is no train in the railroad crossing alarm section, the circuit of the AC continuity test unit, the cable line, and the speaker is configured through the contact of the switching relay RT linked to the alarm control relay R. The test signal is sent to the AC measurement unit, the test signal is acquired and measured, the measurement data is sent to the data judgment processing unit, the operation function is confirmed by comparison with the reference data at normal time, and another switch relay RT is provided. The circuit of the DC continuity test unit, the cable line, and the alarm lamp is configured through the contact, the test signal is sent from the DC continuity test unit to the alarm lamp, the test signal is taken in and measured by the DC measurement unit, The measurement data can be sent to the data judgment processing unit and compared with the reference data at normal time to confirm the operation function.

In addition, when the train is in the railroad crossing warning section, the circuit of the alarm sound generator, cable line and speaker is configured through the contact of the switching relay RT linked to the alarm control relay R, and the AC measuring unit takes in the signal and measures it. A circuit is composed of intermittent relays, cable lines, and warning lamps via another contact of the switching relay RT. The signal is acquired and measured by the DC measurement unit, and the measurement data is sent to the data processing control unit. Compared with data, operation function can be confirmed.

It is a block diagram of a crossing alarm function confirmation device of the present invention. It is a block diagram of a crossing alarm function confirmation device with a single switching relay circuit section It is a block diagram of the conventional level crossing alarm

The level crossing alarm function confirmation device of the present invention can confirm the function of the speaker and the warning lamp and the short circuit and disconnection of the cable line when the train is absent in the level crossing alarm section, and generates an alarm sound when the train is in the level crossing alarm section. In order to be able to check the function of the tester, intermittent relay, speaker and warning lamp, and check the short circuit and disconnection of the cable line, and can be easily installed at low cost, This has been achieved without compromising the conventional functions of a railroad crossing alarm.

AC continuity test unit, DC continuity test unit, switching relay circuit unit, AC measurement unit, DC measurement unit and page 3
The data continuity test unit has an AC continuity test unit that intermittently generates and outputs an AC signal at the upper limit of the audible frequency band and sends it to the speaker as a test signal. LED continuity can be confirmed and a pulse signal that does not emit light is generated and used as a test signal. In the case of a light bulb, a pulse signal that does not cause the filament to emit light is generated and sent as a test signal to an alarm lamp. A non-contact type AC current sensor is used for the part, and the output of the alarm sound generator and the output of the AC continuity test part are measured via the contact relay RT configuration of the switching relay circuit part. When the lamp is an LED, the weak current is converted into a voltage and measured, and in the case of a light bulb, a non-contact type DC current sensor is used for the input section, and the contact relay RT configuration of the switching relay circuit section is used. intermittent The relay relay circuit section has a switching relay RT, and when there is no train in the level crossing alarm section, the coil of the alarm control relay R is excited and the coil of the switching relay RT is The circuit is composed of the AC continuity test part, the cable line and the speaker at the front contact of the switching relay RT, and the circuit is composed of the DC continuity test part, the cable line and the alarm lamp at another front contact of the switching relay RT, When the train is in the railroad crossing alarm section, the coil of the alarm control relay R is de-energized, the coil of the switching relay RT is de-energized, and a circuit is composed of an alarm sound generator, cable line and speaker at the back contact of the switching relay RT And
A separate back contact of the switching relay RT forms a circuit with an intermittent relay, cable line, and warning lamp, and the circuit configuration is switched via the contact of the switching relay RT when the coil of the switching relay RT is energized or de-energized. The data judgment processing unit receives the measurement data of the AC measurement unit and the DC measurement unit, and the alarm sound generator output, the AC continuity test unit output, and the intermittent relay output when the train is not present and when the train is on the railroad crossing alarm section And the measurement data of the DC continuity test section output is received and saved as reference data, and the measurement data that is constantly received is compared with the reference data,
Based on the comparison value, it is judged whether it is normal or abnormal, and an alarm is output.

FIG. 1 is a block diagram of a crossing alarm function confirmation device according to the present invention. The level crossing alarm function confirmation device is connected to the switching relay circuit unit 8 and the level crossing anomaly detector 9 and is integrated into one frame, and is housed in a railroad crossing device box installed near the level crossing. Connected to the alarm sound generator 2 in the box, the intermittent relay 3, the speaker 4 outside the box crossing box, and the alarm lamp 5,
In conjunction with the alarm control relay R1, the switching relay RT15 and the switching relay RT16 operate,
The switching relay RT15 and the switching relay RT16 use a signal relay in which a plurality of sets of contacts operate at the same time. The switching relay RT15 and the switching relay RT16 have a parallel dual system as a countermeasure against fusion of the relay contacts and prevention of contact failure. When the RT15 and the switching relay RT16 have the contact configuration 20 and the same operation, the coincidence relay PT17 operates, and the coincidence relay PT17
The circuit is constituted by the contact point configuration 18, the contact point configuration 19, the cable line 6 and the cable line 7 of the switching relay RT16, and the contact point configuration 18 outputs the output of the AC continuity test unit 10, the output of the alarm sound generator 2, and the contact point. The configuration 19 is configured to prevent the crossing of the output of the DC continuity test unit 11 and the output of the intermittent relay 3, and when the operation of the switching relay RT15 and the switching relay RT16 does not match, the coil of the matching relay PT17 is de-excited. Thus, the operating contact is opened, the output of the AC continuity test unit 10 and the output of the DC continuity test unit 11 are interrupted by the contact of the coincidence relay PT17, and the output line of the AC continuity test unit 10 and the output of the alarm sound generator 2 are mixed. And the crossing of the output of the DC continuity test unit 11 and the output of the intermittent relay 3 is prevented.

The level crossing anomaly detector 9 includes an AC continuity test unit 10, a DC continuity test unit 11, an AC measurement unit 12, a DC measurement unit 13, and a data determination processing unit 14, each of which uses semiconductor elements.
It consists of a logic circuit. Switch relay RT15 at the front contact of alarm control relay R1
And the switching relay RT16 are connected in parallel, and when there is no train in the level crossing warning section, the coil of the alarm control relay R1 is excited and the coils of the switching relay RT15 and the switching relay RT16 are excited, and the contact configuration 18 of the switching relay RT15 and the switching relay RT16 The AC continuity test unit 10 is connected to the front contact of the switch relay via the PT contact, the speaker 4 is connected to the common contact of the contact configuration 18 of the switching relay RT15 and the switching relay RT16 via the cable line 6, and the switching relay RT15. The DC continuity test unit 11 is connected to the front contact of another contact configuration 19 with the switching relay RT16 via a PT contact, and the cable line 7 is connected to the common contact of another contact configuration 19 of the switching relay RT15 and the switching relay RT16. Warning lamp 5 is connected to the railroad crossing warning section when the train is in the railroad crossing warning section, switching relay RT1 And switching relay R
The coil of T16 is de-energized, the alarm sound generator 2 is connected to the back contact of the contact configuration 18 of the switching relay RT15 and the switching relay RT16, and the back contact of another contact configuration 19 of the switching relay RT15 and the switching relay RT16. The intermittent relay 3 is connected, the AC measuring unit 12 is connected to the common contact of the contact configuration 18 of the switching relay RT15 and the switching relay RT16 and the line 6 between the speakers 4, and the DC measuring unit 13 is connected to the switching relay RT15 and the switching relay RT16. Connected to the line 7 between the common contact of the other contact arrangement 19 and the warning lamp 5,
The output of the AC measuring unit 12 and the output of the DC measuring unit 13 are connected to the data determination processing unit 14,
The contact configuration 21 of the switching relay RT is connected to the data determination processing unit 14, and the output of the data determination processing unit 14 is connected to the outside as an alarm output.

Next, the operation will be described.
In this level crossing alarm function confirmation device, test signals are generated by the AC continuity test unit 10 and the DC continuity test unit 11 of the level crossing abnormality detector 9, respectively, and the contact relay RT15 and switching relay RT16 contact configuration of the switching relay circuit unit 8 18 front contacts and contact configuration 19 front contacts.

For example, when the train is absent in the level crossing warning section, the alarm control relay R1 is excited, the switching relay RT15 and the switching relay RT16 are excited, and the switching relay RT15 and the switching relay RT are excited.
The contact configuration 18 and the contact configuration 19 are composed of a front contact and a common contact, and a test signal is transmitted from the AC continuity test unit 10 via the PT contact to the speaker 4 via the front contact of the contact configuration 18 and the cable line 6. The test signal is transmitted from the DC continuity test unit 11 to the alarm lamp 5 via the PT contact and the front contact of the contact configuration 19 and the cable line 7, and the test signal output of the AC continuity test unit 10 is a cable. Measurement is performed by the AC measurement unit 12 connected to the line 6, and the test signal output of the DC continuity test unit 11 is measured by the DC measurement unit 13 connected to the cable line 7 and transmitted to the data determination processing unit 14. .

When the train is in the railroad crossing warning section, the alarm control relay R1 is de-energized and the switching relay RT1
5 and the switching relay RT16 are de-energized, and the switching relay RT15 and the switching relay RT16
The contact configuration 18 and the contact configuration 19 are configured by a back contact and a common contact, and an alarm sound signal is transmitted from the alarm sound generator 2 to the speaker 4 via the back contact and the cable line 6 of the contact configuration 18, and the intermittent relay 3. An alarm flash signal is transmitted to the alarm lamp 5 via the back contact of the contact configuration 19 and the cable line 7. The alarm sound signal output of the alarm sound generator 2 is measured by the AC measuring unit 12 connected to the cable line 6, and the flash signal output of the intermittent relay 3 is measured by the DC measuring unit 13 connected to the cable line 7. , Respectively, to the data determination processing unit 14.
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In the data judgment processing unit 14, when the vehicle is absent in the level crossing warning section, the contact relay 21 is closed, and the AC continuity test unit 10 and the DC continuity test unit 11 are instructed to generate respective test signals. Transmitting the output, receiving the test signal through the contact configuration 18 of the switching relay circuit unit in the AC measuring unit 12 and the DC measuring unit 13, storing the normal measurement data as the reference data, and constantly receiving the measurement data Processing, comparing with the reference data, determining whether it is normal or abnormal based on the comparison value, and outputting to the outside as an alarm output.

When the train is in the railroad crossing warning section, the contact configuration 21 of the switching relay RT is opened, the AC continuity test unit 10 and the DC continuity test unit 11 are instructed to stop generation of the respective test signals, and at the same time, the contact of the switching relay circuit unit The alarm sound signal output of the alarm sound generator 2 is measured by the AC measuring unit 12 connected to the cable line 6 via the configuration 18, and the intermittent relay is connected via the contact configuration 19 of the switching relay RT15 and the switching relay RT16. 3 flash signal output to cable line 7
Is measured by the DC measuring unit 13 connected to the input, received and received, and the normal measurement data is stored as reference data, and the alarm sound signal output of the alarm sound generator 2 and the flash signal output of the intermittent relay 3 are always output. Receive, process the data, compare with the reference data, determine whether it is normal or abnormal based on the comparison value, and output to the outside as an alarm output.

In addition, this invention is not limited to the said embodiment, A various form is possible. Examples of this form include the following (a) to (c).
(A) Since the relay of the switching relay circuit section uses a highly reliable signal relay, if it is acceptable in consideration of relay contact welding or contact failure, a single system configuration as shown in FIG. Is possible.
(B) Since the reference value in the data determination processing unit varies depending on the installation location and environment of the alarm device, the reference set value may be determined for each site.
(C) The warning lamp connected to the line 7 may be a bulb type or an LED type.

1; Alarm control relay R
2; alarm sound generator 3; intermittent relay 4; speaker 5; alarm lamps 6 and 7; signal line 8; switching relay circuit unit 9; crossing abnormality detector 10; AC continuity test unit 11; AC measurement unit 13; DC measurement unit 14; data determination processing units 15 and 16; switching relay RT
17; coincidence relay PT
18, 19, 20, 21; relay contact configuration

Claims (2)

It has an AC continuity test unit, a DC continuity test unit, a switching relay circuit unit, an AC measurement unit, a DC measurement unit, and a data determination processing unit. The AC continuity test unit generates and outputs an AC signal intermittently to a speaker. The DC continuity test unit generates and outputs a pulse signal to the extent that the warning lamp does not emit light, and sends the pulse signal to the warning lamp. The switching relay circuit unit includes a switching relay RT, and is in a railroad crossing warning section. When the train is absent, the AC continuity test unit, the cable line, and the speaker circuit, and the DC continuity test unit, the cable line, and the alarm lamp are configured via the front contact of the switching relay RT. When the train is in the alarm zone, switch relay R
The circuit is composed of the alarm sound generator, the cable line and the speaker through the back contact of T, and the intermittent relay, the cable line and the alarm lamp, and the operation of the switching relay RT passes through the contact of the switching relay RT. The circuit configuration is switched, and the AC measuring unit is connected to the switching relay R.
Connected to a circuit between the common contact of T and the speaker, and the output signal of the AC continuity test unit and the alarm sound generator is measured by the operation of the switching relay RT. The DC measuring unit is connected to the common of the switching relay RT. Connected to a circuit between the contact point and the alarm lamp, and the output signal of the DC continuity test unit and the intermittent relay is measured by the operation of the switching relay RT, and the data determination processing unit includes the AC measurement unit and the DC Receives measurement data from the measurement unit, saves normal measurement data as reference data, compares measurement data received at all times with reference data, determines whether it is normal or abnormal based on the comparison value, and outputs an alarm A crossing alarm function confirmation device characterized by that. When the parallel dual system switching relay RT does not match the operation, the coil of the coincidence relay PT is de-energized, the operation contact of the coincidence relay PT is opened, the output of the alarm sound generator, the output of the AC continuity test unit and the intermittent The crossing alarm function confirmation device according to claim 1, wherein crossing of the output of the relay and the output of the DC continuity test section is prevented.