JPH02243026A - Data transmission system - Google Patents

Abstract

PURPOSE:To attain high speed transmission of data even at large power consumption by providing a mode changeover means switching a charge mode sending a data with less power consumption and a discharge mode sending a data with much power consumption. CONSTITUTION:There are two modes in a nod 2; a charge mode sending a data with less power consumption and a discharge mode sending a data including a picture with much power consumption. In the case of the charge mode, a data is sent by a transmission circuit section 12 with a control section 18 via a transmission circuit switching section 11. In the case of the charging mode, power supply circuit sections 42, 43 are used as power supplies, a charging circuit section 43 applies charging to supply power to a node main body 2a from the circuit section 42. Moreover, in the case of the discharge mode, a control changeover section 17 switches the mode into the discharge mode and the data is sent from other transmission circuit section 13. In the case of the discharge mode, the power supply circuit section 43 charged in the charge mode is used as the power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data transmission system used in security systems, building automation run systems, and intelligent building management systems.

[Prior Art] FIG. 3 shows a conventional network system using pair lines, in which one central processing unit 1 and a plurality of nodes 2 are connected to a transmission line 3. In conventional network systems, power is not superimposed on signal lines, but power is sent through power lines, and two lines (four lines), a signal line and a power line, are used to increase data transmission speed. That is, by transmitting power and data using separate pair lines, it is possible to increase the data transmission speed. However, since two wires, a signal line and a power line, are used, there are problems in terms of workability, cost, etc.

[Problems to be Solved by the Invention] As a solution to this problem, it is possible to adopt a method of superimposing power on the signal line. However, with this method,
There is a problem that image transmission, which requires a large amount of power, and high-speed transmission are impossible.

The present invention has been provided in view of the above-mentioned points, and is a data transmission system that is easy to construct, suppresses costs, and enables high-speed data transmission even during high power consumption. The purpose is to provide the following.

[Means for Solving the Problems 1] The present invention provides mode switching means for switching between a charging mode that transmits data that consumes less power and a discharging mode that transmits data that consumes more power; A charging section has two power supply circuit sections, one for supplying power and the other for charging the power supply, and the type of data required (accordingly, the mode switching means is controlled to switch the mode (
, a control means for switching and controlling the power supply circuit section of the charging section and supplying power from the charging power supply circuit section when in the discharging mode.

[Function] With the above means, in the case of a charging mode in which data with low power consumption is transmitted, power is supplied from one power supply circuit section of the charging section, and the other power supply circuit section is charged, thereby reducing power consumption. When in the discharge mode in which a large amount of data is transmitted, power is supplied from the charging power supply circuit section.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. Second
The figure shows an elliptical diagram of a network system, and as mentioned above, low-speed transmission is possible in the conventional bare wire network system with superimposed power, but furthermore, in the present invention,
A charging section 4 is added to enable high-speed transmission. FIG. 1 shows a block diagram of one node 2,
The node 2 is composed of a node main body 2a and the charging section 4 described above. Note that the transmission signal of the network is, for example, a signal composed of a bipolar signal, and data is superimposed on a power source and transmitted.

The node main body 2a includes a transmitting circuit switching section 11, a transmitting circuit section 1
2.13, receiving circuit switching section 14, receiving circuit section 15.16
, control switching unit 17, control unit 18゜data processing switching unit 19
, a data processing section 20, a memory 21, and the like. The charging section 4 includes a power circuit switching section 41, 44, a power circuit section 42, a charging power circuit section 43, and the like.

There are two modes in the node 2, which are controlled by the control unit 18 and switched by the control switching unit 17. One is a charging mode that transmits data that consumes less power, and the other is an image mode that consumes more power. This is a discharge mode that transmits data including.

In the charging mode, data is transmitted from one of the transmitting circuit sections 12 by the control section 18 via the transmitting circuit switching section 11 . The received data is taken into one of the receiving circuit sections 15 via the receiving circuit switching section 14, and then transferred to the data processing switching section 1.
9, the data is processed by the data processing unit 20 and stored in the memory 21.

In this charging mode, the power source is the power supply circuit section 4.2゜43.
Charging is performed in the charging power supply circuit section 43, and power is supplied from the power supply circuit section 42 to the node main body 2a. Note that the transmitting circuit switching section 11 and the receiving circuit switching section 14
A mode switching means is constituted by the mode switching means, and a control means is constituted by the control switching section 17 and the control section 18.

In the case of discharge mode, when a high-speed transmission signal is requested to the control unit 18, after confirming that there is no other data on the network, a control switching signal is output to the control switching unit 17, and the control switching unit 17 outputs a control switching signal to the control switching unit 17. , switch the mode to discharge mode and start transmitting and receiving data. Data is transmitted from the other transmitting circuit section 13 controlled by the control section 18 via the transmitting circuit switching section 11 . The received data passes through the receiving circuit switching section 14, is taken into the other receiving circuit section 16, passes through the data processing switching section 19, and is transferred to the data processing section 20.
The data is processed and stored in the memory 21. In this discharge mode, the power supply uses the power charged in the charge mode described above. In other words, power from the power supply circuit section 43 is used.

When switching from discharging mode to charging mode, a low-speed transmission signal is requested from the control unit 18, and after confirming that there is no other data on the network, a control switching signal is output to the control switching unit 17, and the control switching unit At step 17, the mode is switched to charging mode and data transmission and reception is started. As described above, by switching between the two modes, it is possible to construct a power superimposition network system that enables high-speed transmission.

[Effects of the Invention] As described above, the present invention includes a mode switching means for switching between a charging mode that transmits data that consumes less power and a discharging mode that transmits data that consumes more power; A charging unit has two power supply circuit units, one for supplying power and the other being charged by the power supply, and a power supply circuit unit for the charging unit that controls a mode switching means to switch modes depending on the type of data requested. Switch and control the
In the discharging mode, the controller is equipped with a control means for supplying power from the charging power supply circuit section, so in the charging mode, in which data is transmitted with low power consumption, power is supplied from one of the power supply circuit sections of the charging section. In the discharging mode, which supplies power and charges the other power supply circuit and transmits data that consumes a large amount of power, power is supplied from the charging power supply circuit. This enables high-speed data transmission, including images, without increasing power consumption or reducing transmission speed, and has the effect of being applicable to security systems, building automation systems, intelligent building management systems, etc. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a node according to an embodiment of the present invention, FIG. 2 is a system diagram of the same network, and FIG. 3 is a system diagram of a conventional network. 1 is the central processing unit, 2 is the node, 4 is the charging unit, 42.4
3 is a power supply circuit section. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 Figure 1 Figure 3

Claims (1)

[Claims] (1) In a high power consumption data transmission system that consists of a central processing unit and multiple nodes and that superimposes power on data, there is a charging mode that transmits data that consumes less power, and a charging mode that transmits data that consumes more power. a charging section having two power supply circuit sections, one of which supplies power and the other of which is charged with power in the charging mode; In addition to controlling the switching means to switch the mode,
A data transmission system comprising: control means for switching and controlling a power supply circuit section of a charging section, and supplying power from a charging power supply circuit section when in a discharging mode.