JPH0471014A - Electronic interlocking device - Google Patents

Abstract

PURPOSE:To obtain an electronic interlocking device capable of dealing with a service interruption accident and easily executing initial run even at the time of being completely released by providing the device with an uninterruptive memory for storing the driving status data of an apparatus to be controlled immediately before the generation of service interruption. CONSTITUTION:When a control part 1 is normally driven and there is no service interruption, data (m) indicating the state of a field apparatus (c) controlling the control part 1 are stored in the uninterruption memory M and the stored contents are updated in each change in the output contents of the control part 1. When service interruption occurs, the control part 1 is stopped and the data (m) stored in a RAM of the control part 1 are also cleared. However, the data (m) in the memory M are held by the action of an internal pattern of the memory M. When the service interruption is restored, the control part 1 inputs the data (m) from the memory M, decides the validity of the data (m), and when the data (m) are valid, executes arithmetic processing by using the data (m) and starts the control of the apparatus (c) again based upon the output of the arithmetic result.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electronic interlocking device, and more particularly to an electronic interlocking device in which drive control of field equipment such as traffic lights and switches is also computerized. [Conventional technology]

In recent years, the interlocking device has been replaced by a relay-less electronic interlocking device instead of the conventional relay type (for example, Japan fS Technical Report Vol. 10 N
o, 21986 P, 7-16). This electronic interlocking device is based on the results calculated by a computer installed in the equipment room (center), and is used to control on-site equipment (controlled equipment) such as traffic lights and point switches installed on the field side.
is driven and controlled, or this drive control is performed via a relay. Therefore, in electronic interlocking devices that drive and control field equipment using relays, it is possible to use magnetic retention relays to cope with power outage accidents. Therefore, when power is restored, calculations can be made based on the data of the magnetic retention relays. It can be processed and restarted. In addition, when starting the operation of the electronic interlocking device, the initial operation of the electronic interlocking device is easy because the initial value can be set for normal position or reverse position by energizing the external terminal of the magnetic holding 1) relay. There are advantages. In addition, because conventional electronic interlocking devices connect the center and each field device with cables, the number of cables required is enormous, resulting in high costs and construction costs. Although it is checked and corrected, it still has the problem of easily causing wiring errors. In order to solve these inconveniences, terminals are installed near each field device to drive and control the field devices, and a local area network (LAN) is formed between these terminals and the center. , a completely relay-less electronic interlocking device has been proposed that drives and controls each field device using semiconductor switching elements.

[Invention or problem to be solved]

However, the completely relay-less electronic interlocking device proposed above cannot effectively cope with power outages because it can only have a magnetic holding relay, and has the disadvantage that it is troublesome to input data during initial operation. Therefore, the present invention has been devised to solve the above-mentioned problems, and its purpose is to be able to cope with power outage accidents even with a completely relay-less electronic interlocking device, and to enable initial operation. The objective is to provide an easy electronic interlocking device.

[Means to solve the problem]

In order to achieve the above object, an electronic interlocking device according to the present invention performs arithmetic processing based on predetermined input information in a control unit, and drives and controls a controlled device via a switching circuit that is activated based on the result of the calculation. An electronic interlocking device that
an uninterruptible memory capable of storing the driving state of the controlled equipment and, even in the event of a power outage, storing data of the driving state of the controlled equipment immediately before the power outage; and storage in the uninterruptible memory when the power is restored. and start-up means for starting the arithmetic processing of the control section based on the information that has been set.

[Effect]

In the above configuration, the uninterruptible memory always stores data on the operating state of the controlled device, and at the time of a power outage, stores data on the controlled device immediately before the power outage. The startup means causes the arithmetic unit to start arithmetic processing based on the data stored in the uninterruptible memory when the power is restored.

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic interlocking device according to an embodiment of the present invention will be described below with reference to the drawings. On the center side a, there is a signal II installed on the field side.
An interlocking logic processing unit 1 is provided for controlling field equipment (controlled equipment) C such as c1 and point device c2.
This interlocking logic processing section 1 corresponds to the control section of the present invention, and also functions as the start-up means of the present invention. Hereinafter, this interlocking logic processing section will be explained as a control section. The control unit 1 is mainly composed of a microcomputer like a well-known electronic interlocking device, and has an external WD.
A watchdog timer (T) sheet 2 is connected, and the operating status is monitored by this WDT. In addition,
The WDT sheet 2 can also be provided within the control section 1. Similar to the well-known electronic interlocking device, this control section 1 is connected to a logic processing section of another system, such as a traffic management system, via a coupling system logic processing M3, and the coupling system It is configured so that data from the display control panel 4 can be inputted via the logic processing section 3. Note that although the control section 1, the coupled logic processing section 3, etc. are normally provided in a standby dual system, only a single system is shown here to simplify the drawing. The output side of the control unit 1 receives the signal II c via the path line l.
1 and I10 unit 5 of switch c2, and each 110 unit 5.5 is connected to a switching circuit SSR constituted by a semiconductor switching circuit. When this switching circuit SSR receives a predetermined signal from the control section 1, the switching circuit SSR receives a signal 6! lc 1 and point c2
It is configured such that it can be operated by applying predetermined alternating current power supplies CX and BX to it. The uninterruptible memory M is composed of a RAM having an internal power supply, and is provided in the WTD sheet 2. Of course, this uninterruptible memory M can be provided separately from the WTD sheet 2 or can be provided within the control section 1. In this uninterruptible memory M, data for inter-station control and station handling control controlled by the control unit 1 is stored, and
For example, even if a power outage occurs, the data m immediately before the power outage can be retained by the internal power supply, and the data m stored in a computer other than the control unit 1, such as a well-known personal computer, is configured. The configuration is such that initial data m0 at the time of starting operation of the electronic interlocking device can be written using a writing device. As for the capacity of the uninterruptible memory M, in the case of a standard single-track station, an 8-bit memory is sufficient, and it is preferable to use two identical memories to ensure fail-safety. When the memory is duplicated, the state between stations is, for example, 20.
As a result of comparing the contents of both memories, when the bit position is 110, the departure side is determined, when it is 0/1, the approach is determined, and when it is 1/1.010, it is determined that it is uncertain. Ru. Of course, this memory content determined to be uncertain is omitted. Next, the control operation of the control section 1 will be explained with reference to the flowchart in FIG. Now, it is assumed that the control unit 1 is operating normally (step 100 affirmative, hereinafter referred to as step S), and there is no power outage (S102 negative),
Therefore, data m of the state in which the control unit 1 is controlling the field equipment C at that time is stored in the uninterruptible memory M, and the memory is updated every time the output content of the control unit 1 changes (S
104.5106). If there is a power outage at this time (S102 affirmative), the control unit 1 will stop and the data m indicating the status of the field equipment C stored in the RAM in the control unit 1 will also be cleared. Data m in the uninterruptible memory M is held by the action of the internal battery of the uninterruptible memory M. When the power outage is restored (3108 affirmative), the control unit 1 takes in the data m in the uninterruptible memory M, and also stores the data m.
Determine whether it is true or false. Then, if the data m is correct (S110.511
2 (affirmative), the data m is used for arithmetic processing, and by outputting the result of the calculation, control of the field equipment C is started again (S114°5116, negative). Note that if the read data m is incorrect, (311
2 (No), the electronic interlocking device cannot be started with such data m, so a separate abnormality process is performed to input the same accurate data as when starting the operation of the electronic interlocking device (3118). . According to the device of this embodiment, an uninterruptible memory M is attached to the control unit 1, and data m indicating the operating state of the field equipment C immediately before the power outage can be stored therein, so that when the power is restored,
Arithmetic processing can be performed using the data m, and the electronic interlocking device can be started up quickly. Moreover, since the initial data mO can be easily written into the uninterruptible memory M using a data writing device such as a well-known personal computer, it is possible to sufficiently cope with starting the electronic interlocking device.

【Effect of the invention】

According to the present invention, an uninterruptible memory is attached to the control unit, and data indicating the operating state of the rupture mm machine immediately before the power outage can be stored therein, so that when the power outage is restored, the data can be used for calculation processing. This allows the electronic interlocking device to be started up quickly. Moreover, since initial data can be easily written into the uninterruptible memory using a data writing device, it is possible to sufficiently cope with starting the electronic interlocking device.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an electronic interlocking device according to an embodiment of the present invention, and FIG. 2 is a flow chart showing the operating state. a... Center side, b... Field side, C1+C2... Field equipment (controlled equipment), 1... Interlocking system logic processing section (control section), SSR... Switching circuit.

Claims (1)

[Scope of Claims] An electronic interlocking device that performs arithmetic processing based on predetermined input information in a control unit and drives and controls a controlled device via a switching circuit that is activated based on the result of the calculation, the controlled device comprising: an uninterruptible memory that can store the driving state of the controlled device and, even in the event of a power outage, the data of the driving state of the controlled device immediately before the power outage, and information stored in the uninterruptible memory when the power is restored. An electronic interlocking device comprising: startup means for starting arithmetic processing of the control unit.