JP2542530B2 - Solenoid valve drive controller - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a solenoid valve drive control device, and more specifically, a plurality of solenoid valves are connected by a common bus wire and the bus wire is used to connect the solenoid valves. The present invention relates to a solenoid valve drive control device which sends a drive current and an on / off signal for a solenoid valve.

[Prior Art] A manifold type solenoid valve in which solenoid valves are connected in series by a manifold in order to simplify piping work and narrow the installation space when a large number of solenoid valves are used in a device or machine in a fluid control system. Is used. In this case, the operation of each solenoid valve is generally performed by on / off control of electric current to each solenoid constituting the solenoid valve.

[Problems to be Solved by the Invention] However, since the control signal for the on / off control and the driving power supply line are common, it is assumed that 10
If one solenoid valve is installed, the number of wires is 20, and in the case of the double solenoid, 40 wires are required for one manifold. In such a state, it is pointed out that when increasing or decreasing the number of solenoid valves, a new wiring work must be performed each time. Further, it is pointed out that a large space is occupied because a large number of wirings are performed, the wiring work is complicated, or there is a risk of electrical failure.

Therefore, according to the present invention, the wiring can be easily changed in response to the increase or decrease in the number of solenoid valves, and the number of wirings of the drive current and the ON / OFF signal feeding wires for a plurality of solenoid valves can be reduced. Thus, it is an object of the present invention to provide a solenoid valve drive control device that effectively utilizes the mounting space of the solenoid valve, eliminates the risk of electrical failure, and reduces the manufacturing cost.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a plurality of solenoid valve units, a power supply bus that supplies power to the solenoid valve units, and an individual solenoid valve. A bus line including an address bus for sending an address signal and a data bus for energizing / deactivating the individual solenoid valve units; and a bus line provided corresponding to the individual solenoid valve units, for the bus line. A plurality of manifold-side units each having a connection portion; and each of the solenoid valve units, an interface circuit for receiving its own address signal and data signal sent from the address bus and the data bus, and a memory circuit. ,
A plurality of solenoid valve units are connected in series by connecting adjacent manifold-side units among the manifold-side units via the connecting portion, and connecting the bus line from the connecting portion. The solenoid valve unit is drive-controlled by a solenoid valve control signal composed of the address signal and the data signal sent via a power supply and a power source sent from the power source bus.

[Operation] By increasing or decreasing the number of units on the manifold side, the number of solenoid valves connected in series is increased or decreased. At this time, since the manifold side unit has a connection portion for the bus line, the bus line is extended or shortened by connecting the manifold side units. Therefore, this can be dealt with only by increasing or decreasing the address signal transmitted from the bus line and sent to each solenoid valve.

[Embodiment] Next, a solenoid valve drive control device according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a bus line, and the bus line 10 is basically composed of a power supply bus 12, an address bus 14 and a data bus 16. In this case, the address bus 14 and the data bus 16 are put together and the address signal and the data signal are put together in this way.
It is also possible to alternately send the signals by means of, and as shown in FIG. 2, the address signal and the data signal are formed as a "word" signal 18, and this "word" signal 18 is collected as described above. It is also possible to send to each solenoid valve by the signal line put together.

By the way, a plurality of solenoid valve units 20a, 20b, 20c ... Are connected to the bus wire 10 configured as described above.
In the present embodiment, in practice, the bus wire 10 is connected to the solenoid valve units 20a, 20b, 20c ... Manifold side units 21a, 21b, 21 fixed to the manifold main body.
In c ..., the first connectors 24a, 24b, 24c ... And the second connectors 26a, 26b, 26c ...
And are connected continuously. That is, the connector 24a of the manifold side unit 21a is fitted to the connector 26b of the adjacent manifold side unit 21b, and the connector 24b of the manifold side unit 21b is fitted to the connector 26c of the adjacent manifold side unit 21c. Connected to.

The individual solenoid valve units 20a, 20b, 20c ... Are connected to the respective manifold-side units 21a, 21b, 21c ... via connectors 24a, 24b, 24c ..., 26a, 26b, 26c.
The solenoid valve units 20a, 20b, 20c ... Include an input / output circuit 22, a CPU 24, an internal memory 26, a solenoid driver 28 and a solenoid 30 therein, as can be understood from FIG.

Therefore, in the above-mentioned configuration, the address bus 14 of the bus line 10 is supplied with an address signal related to a specific solenoid valve unit, and the specified solenoid valve is simultaneously sent to the data bus 16 at the same time as the signal. On / off signals of the solenoids that make up the unit are sent. As a result,
Since the input / output circuit 22 also serving as an interface constantly monitors the address signal, the input / output circuit 22 only receives the on / off signal related to its own address. On the other hand, the internal memory 26 sends a signal concerning the current on / off state of the solenoid to the CPU 24, so that the CPU 24 compares the conventional on / off signal with the newly fetched signal, and if they are different, To a solenoid driver 28 as a new command signal via an amplifier (not shown). As a result, the solenoid 30 is energized or deenergized depending on the new on / off signal based on the predetermined current sent from the power supply bus 12 to the solenoid driver 28. In this case, the new on / off signal is
The old data is rewritten by being introduced into the internal memory 26 via. Further, in such a configuration, the current of the solenoid driver 28 for energizing the solenoid 30 is constantly monitored and the signal is sent from the input / output circuit 22 to the bus line 10 via the CPU 24. That is, this signal is
When the address signal applied to the solenoid valve is sent to the address bus 14 at the same time as being sent to the address bus 16 and is introduced into the control device (not shown), the energized or deenergized state of the solenoid 30 is confirmed by the control device. Will be.

As described above, since the solenoid valve drive control device is configured, it is not necessary to perform wiring externally, and since wiring is performed by the bus line, the solenoid valves can be increased or decreased in the manifold side units 21a, 21b,
21c ... can be increased or decreased and the address signal transmitted through the bus line 10 can be increased or decreased.

[Effects of the Invention] According to the present invention, a plurality of solenoid valves as described above are connected by a common bus wire provided in the manifold side unit. Therefore, even if the number of solenoid valves connected in series is increased or decreased, the bus lines that send signals to the solenoid valves are connected by the connection part of the bus line provided on each manifold side unit, It can be extended or shortened by increasing or decreasing the number of units. Therefore, the number of solenoid valves can be easily changed.

In addition, since a bus wire is used, the amount of wiring for each solenoid valve is drastically reduced, and a useful space can be secured.In addition, removing the bundled wires also frees electrical interference, and further configures the solenoid valve. The energized or deenergized state of the solenoid to be activated can be confirmed without fail. Therefore, remarkable effects such as improvement in reliability of the entire device can be obtained.

[Brief description of drawings]

FIG. 1 is a block connection diagram of the device of the present invention, FIG. 2 is an explanatory diagram of signals transmitted when the address bus and the data bus are integrated in the block connection diagram shown in FIG. 1, and FIG. 3 is a manifold side. It is explanatory drawing which shows the coupling relationship of a unit and a solenoid valve unit. 10 …… Bus line 12 …… Power supply bus 14 …… Address bus 16 …… Data bus 18 …… “word” signal 20a to 20c …… Solenoid valve unit 21a to 21c …… Manifold side unit 22 …… Input / output circuit 24 ...... CPU 24a to 24c ...... Connector 26 ...... Internal memory 26a to 26c ...... Connector 28 ...... Solenoid driver 30 ...... Solenoid

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tetsuo Kuminato 938 Inari-cho, Soka-shi, Saitama Sintered Metal Industry Co., Ltd. Grass processing plant (56) Reference JP-A-60-57072 (JP, A) JP-A-56 -157931 (JP, A) JP-A-57-184781 (JP, A) JP-B-49-19290 (JP, B1)

Claims (1)

(57) [Claims] 1. A plurality of solenoid valve units, a power supply bus for supplying power to the solenoid valve units, an address bus for sending address signals of the individual solenoid valves, and an individual solenoid valve unit. A bus line including a data bus for energizing and deactivating, and a plurality of manifold-side units that are provided corresponding to the individual solenoid valve units and that have a connecting portion for the bus line. The solenoid valve unit has an interface circuit that takes in its own address signal and data signal sent from the address bus and the data bus, a memory circuit, and an arithmetic circuit, and is adjacent to the manifold side unit. By connecting the manifold-side units to each other via the connecting portion, a plurality of solenoid valve units are connected in series, and the connecting portion is connected via the bus line. Electromagnetic valve drive control device comprising an electromagnetic valve control signal consisting of the address signal and the data signal fed, said that the solenoid valve unit is driven and controlled by the power transmitted from the power supply bus Te.