JP2537681Y2 - Interlocking load control device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlocking load control device, and more particularly to an interlocking load control device suitable for use in a train air pressure regulator.

[0002]

2. Description of the Related Art One train set consists of several to several tens of vehicles. An air pressure regulator and an air compressor are mounted to maintain the air pressure inside the vehicle at a predetermined value or more at a rate of one vehicle for each vehicle or several vehicles, thereby constituting an air pressure adjustment system. This will be described in detail with reference to FIG.

In FIG. 1, reference numeral 10 denotes an air pressure regulator, in which an air pressure sensor 11, a comparator 12, and a semiconductor switch 13 are provided. The air pressure sensor 11 detects the air pressure inside the vehicle, and supplies this detection signal to the comparator 12. The comparator 12 compares the supplied detection signal with a preset reference value, and when determining that the detection signal is less than the reference value, supplies a “1” level determination signal to the semiconductor switch 13. When the “1” level discrimination signal is supplied, the semiconductor switch 13 applies a predetermined voltage to the exciting coil 14 of the electromagnetic switch. As a result, the contact 15 of the electromagnetic switch is turned on, the motor 16 rotates, and the air compressor 17 is driven to increase the air pressure.

On the other hand, when the air pressure is high, the sensor 11
Is greater than or equal to the reference value, and the comparator 12 supplies the discrimination signal of the “0” level to the semiconductor switch 13.
When the “0” level determination signal is supplied, the semiconductor switch 13 stops applying the voltage to the exciting coil 14.
As a result, the contact 15 is turned off, and the operation of the motor 16 and the pneumatic compressor 17 is stopped.

[0005] A battery 40 has a positive electrode connected to the air pressure regulator 10 via a breaker 41 and a breaker 18 in that order. The negative pole of the battery 40 is connected to the air pressure regulator 10 without passing through a breaker. Also, 31, 32, 33, 34, 35, 36, 3
7, 38 are air pressure regulators, sensors, comparators,
They are a semiconductor switch, an exciting coil, a contact, a motor, an air compressor, and a breaker, and are configured in the same manner as the respective components 10 to 18 and are provided in another vehicle.

[0006] The same components as the components 10 to 18 are provided in other vehicles one by one (not shown). The exciting coils 14, 34, etc. are all connected in parallel.

In the above configuration, when at least one of the detection results of the sensors 11, 31 and the like is below the reference value, the comparator connected thereto outputs a "1" level discrimination signal, and the corresponding semiconductor A predetermined voltage is output from the switch. This voltage is applied to each of the excitation coils 14, 34, etc., so that each motor rotates and each air compressor is driven.

[0008]

According to the above arrangement, since one semiconductor switch needs to drive all the exciting coils, it is necessary to use a large rated current for each semiconductor switch. Accordingly, it is necessary to increase the size of cooling fins (not shown) attached to each semiconductor switch. Thus, according to the configuration of FIG. 2, there is a problem that the device is large and expensive.

Accordingly, it is necessary to increase the trip current of the breakers 18 and 38 connected to each air pressure regulator. Therefore, even if an abnormal current flows due to a failure of the corresponding air pressure regulator, there is a danger that the breaker does not trip and the damage is unnecessarily increased. Further, there is a danger that a short-circuit failure of one excitation coil causes a failure such as a failure of all the semiconductor switches or a trip of all the breakers.

The present invention has been made in view of the above circumstances, and has an interlocking load capable of reducing the size and cost of equipment, having a margin for failure, and preventing the spread of failure. It is intended to provide a control device.

[0011]

In order to solve the above-mentioned problems, the present invention is provided with a predetermined number of vehicles as a unit, provided with adjusting means for adjusting the air pressure in the vehicles, and provided for each of the adjusting means. A plurality of exciting coils for individually driving the adjusting means, and a common input terminal provided for each of the exciting coils, and a current is individually supplied to each of the exciting coils according to a control signal supplied to the input terminal. A plurality of supply devices, a plurality of sensors provided for each of the supply devices, and a plurality of sensors for detecting air pressure in the vehicle, a detection signal provided for each of the supply devices, and a detection signal output from the sensor; And a plurality of detectors for comparing the reference signal with the reference signal and outputting a control signal to the input terminal when the detection signal becomes equal to or less than the reference signal.

[0012]

When a control signal is output from at least one of the detection units, each supply device drives the excitation coils in conjunction with each other by individually supplying a current to each excitation coil. The adjusting means is driven in conjunction with the excitation coil being driven in conjunction with it.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an air pressure adjusting system according to an embodiment of the present invention. In the figure, portions corresponding to the respective portions in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 1, reference numeral 1 denotes an air pressure regulator, in which a semiconductor switch 4 is provided. The semiconductor switch 4 applies a predetermined voltage to the exciting coil 14 when the “1” level drive signal is supplied. As a result, the contact 15 is turned on, the motor 16 rotates, and the air compressor 17 is driven. On the other hand, the semiconductor switch 4 is “0”
When the level drive signal is supplied, the application of the voltage is stopped, and the operation of the motor 16 and the air compressor 17 is thereby stopped.

The semiconductor switch 3 outputs a drive signal for driving the semiconductor switch 4 based on the determination signal supplied from the comparator 12. That is, the semiconductor switch 3 outputs a drive signal of “0” level when supplied with a “0” level determination signal, and outputs a “1” level when supplied with a “1” level determination signal. Output the driving signal.

Reference numerals 2, 5, and 6 denote an air pressure regulator, a semiconductor switch, and a semiconductor switch, respectively, which are configured in the same manner as the components 1, 3, and 4 described above. Also,
The same components as those described above are provided in other vehicles one set at a time (not shown). The output terminals of the first-stage semiconductor switches 3, 5 and the like and the input terminals of the second-stage semiconductor switches 4, 6 and the like are connected over the entire air pressure regulator.

In the above configuration, when at least one of the detection results of the sensors 11, 31 and the like is below the reference value, the comparator connected thereto outputs a "1" level discrimination signal, A "1" level drive signal is output from the semiconductor switch. This drive signal is supplied to each of the subsequent semiconductor switches 4, 6 and the like provided in each air pressure regulator. As a result, a predetermined voltage is applied to the corresponding exciting coil from each semiconductor switch at the subsequent stage, each contact is turned on, each motor rotates, and each air compressor is driven.

On the other hand, when all the detection results of the respective sensors become equal to or less than a predetermined value, each comparator outputs a "0" level discrimination signal, and a "0" level drive signal is output from each of the first-stage semiconductor switches. . Then, when this drive signal is supplied to each subsequent semiconductor switch, the application of voltage to each excitation coil is stopped, each contact is turned off, and each motor and the air compressor are stopped. As described above, in the present embodiment, since the driving target of each semiconductor switch in the subsequent stage is limited to one excitation coil, the rated output current can be reduced. For example, in the air pressure adjusting system of a 10-car train, the system is one-tenth of the conventional art.
The rated current can be reduced to a degree. As a result,
The downsizing of the device and the cost reduction can be easily achieved. Each of the preceding semiconductor switches needs to supply its output signal to all the subsequent semiconductor switches, but the required input current of each subsequent semiconductor switch is extremely small compared to the required input current of each exciting coil. It doesn't matter.

Further, with the reduction in power consumption of the equipment,
Since the trip current of the breaker provided in each air pressure regulator can be reduced, each breaker 18, 38, etc. can be quickly tripped in response to an abnormal current,
The failure can be prevented from spreading. Furthermore, since each excitation coil and each semiconductor switch in the subsequent stage correspond one-to-one, even if a short-circuit failure occurs in some of the excitation coils, there is no hindrance to driving of other excitation coils, and there is a margin for failure. Very high degree.

As described above, according to the interlocking load control device of the present invention, it is possible to reduce the size and cost of the device and to have a margin for failure, and
The failure can be prevented from spreading.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an air pressure adjusting system according to an embodiment.

FIG. 2 is a block diagram of a conventional air pressure adjusting system.

[Explanation of symbols]

16, 36 Motor 17, 37 Pneumatic compressor (these constitute the adjusting means) 14, 34 Excitation coil 4, 6 Semiconductor switch (supply device) 11, 31 Sensor 12, 32 Comparator 3, 5 Semiconductor switch (3, above) , 12, 5 and 32 each form a detection unit)

Claims (1)

(57) [Scope of request for utility model registration] An adjusting unit provided for a predetermined number of vehicles as a unit and adjusting an air pressure in the vehicle; a plurality of exciting coils provided for each of the adjusting units and individually driving the adjusting unit; Provided for each excitation coil, has a common input terminal,
A plurality of supply devices that individually supply current to each of the excitation coils according to a control signal supplied to the input terminal; a plurality of sensors provided for each of the supply devices and configured to detect air pressure in the vehicle; A detection signal output from the sensor, provided for each supply device, is compared with a predetermined reference signal, and a control signal is output to the input terminal when the detection signal falls below the reference signal. An interlocking load control device, comprising: