JPH04351029A - State monitoring system - Google Patents

Abstract

PURPOSE:To multiplex a voice signal in the presence of a voice input and to use the system for status information transfer in the absence of the input by allocating a voice signal for order wire in the same timing as a status information multiplex slot and providing a voice input presence deciding circuit section to the system. CONSTITUTION:The system consists of a status information collection section 11 collecting status information group 102 and outputting a multiplex status information data string 108 according to a status signal 107 and a voice input interface section 12 generating a voice signal string 109 according to a voice data control signal 110, and judges the presence of the signal 103 to obtain voice input information 105. Moreover, the system is provided with a timing control section 13 outputting a main signal input data 101, the strings 108, 109 and voice/status identification information 111 as multiplex output data 104 according to a multiplex control signal 106 as a multiplex output data 104 and gives voice/status identification information 111 to a multiplex circuit section 14.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to a condition monitoring system, and particularly to a subscriber wireless system installed at an unmanned station in the maintenance of a subscriber wireless system that monitors the condition of equipment and makes meeting calls (called order wire) at a remote location. It relates to a system for monitoring the condition of equipment, etc.

0002

[Prior Art] Conventionally, this type of condition monitoring system is shown in FIG.
As shown in the signal format diagram, since the status information time slot and the order wire audio signal time slot are separate, the order wire audio signal time slot is always allocated even when the order wire is not used. There is. Therefore, when the number of maintenance bits is small, the state information may not be transmitted sufficiently.

0003

[Problem to be Solved by the Invention] In the conventional condition monitoring system described above, the order wire audio signal time slots, which are necessary only during maintenance, are always allocated, so there are few time slots allocated to maintenance status information. There is a drawback. Therefore, there is a drawback that sufficient status information cannot be transferred and maintenance workability deteriorates.

0004

[Means for Solving the Problems] The condition monitoring system of the present invention is a condition monitoring system that monitors the condition of subscriber radio equipment and makes a meeting telephone call at a remote location, and converts the voice input of the meeting into a digital signal and encodes it. At the same time, there is an audio input interface unit that determines the presence or absence of audio input and outputs audio input presence/absence information that becomes a multiplex switching signal, and a status information collection unit that collects status information to know the internal status of the device and sends it to the multiplex circuit. and multiple processing of main signal input data, a status information string from the status information collection section, an audio signal string from the audio input interface section, and audio/status identification information for identifying whether it is an audio signal or a status signal. and a timing control section that provides necessary timing and various control signals to the audio input interface section, status information collection section, and multiplex circuit section. In addition, the format of the digital signal exchanged between the subscriber wireless device side and the monitoring device side may be a shared time slot used for either status information for status monitoring or an audio signal for a meeting telephone, and the shared time slot. and a time slot of identification information for determining whether the time slot is to be used for status information or an audio signal.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a detailed block diagram of this embodiment, and FIG. 3 is a signal format diagram of this embodiment.

The embodiment shown in FIG. 1 includes a status information collection section 11 that collects a status information group 102 and outputs a status information data string 108 for multiplexing according to a status information control signal 107, and an audio signal 103 that is input and digitally encoded to control audio data. The audio input interface section 12 generates the audio signal sequence 109 according to the signal 110, and the audio input interface section 12 also outputs the audio signal input 1.
03 and outputs voice input presence/absence information 105. The main signal input data 101, the status information data string 108, the audio signal string 109, and the audio/status identification information 111 are multiplexed in accordance with the multiplex control signal 106, and a multiplexing circuit section 14 outputs multiplexed output data 104; A multiplex control signal 106 is output to the 11 and 12 so that a desired data string can be multiplexed in the assigned time slot, and a timing control signal is output to the 11 and 12 so that signal sequences 108 and 109 suitable for multiplexing can be output, respectively. It has a timing control section 13 for passing. In addition, the multiplex circuit section 14 provides an audio/video signal to indicate whether the data multiplexed with the main signal train is status information or audio data.
Status identification information 111 is provided to the multiplex circuit section 14.

Next, the detailed operation will be explained with reference to FIGS. 2 and 3. The multiplex circuit section 14 includes a multiplex signal switching section 24 and a multiplex circuit section 2.
5, and the status information string 108 is
or audio signal sequence 109. Identification information 1
11 is created from the audio input presence/absence information 105, and functions to select the audio signal string 109 side only when there is audio input. The output data 24 is multiplexed with the main signal input data 101 in the multiplexing circuit section 25 in a configuration as shown in FIG. At this time, voice/status identification information is simultaneously added and multiplexed with 1 bit. This bit indicates whether status information or audio signals are currently multiplexed in a predetermined time slot.The opposing receiving device extracts this identification information and determines whether the multiplexed data is audio or not. By accurately determining the status, it is possible to correctly reproduce the voice and status information. Therefore, as shown in FIG. 3, the multiplex circuit section 14 multiplexes the status information so that it replaces the audio signal only when there is an audio input. In this case, the number of bits of the audio signal does not necessarily have to be the same as the number of bits of the status information. The voice input interface section 12 is composed of an A/D conversion section 26 and a coding section 27, as in the case of normal voice input, and a voice input determination section 28 that determines whether or not there is voice input. The status information collection unit 11 includes a memory write control unit 21, a memory unit 22, and a memory read control unit 23. In this embodiment, the status information during the audio signal multiplexing period is stored in the memory unit 22 and is used during the period when the audio is interrupted. It is configured to send accumulated status information. Note that the configuration of the status information collection unit 11 can be changed according to the system, since there is also a method in which the status information collection unit 11 does not have a memory unit and the statuses collected during the audio period are discarded and transferred.

As described above, in the present invention, the status information and the audio signal share the same time slot by automatically determining the presence or absence of audio input and sending the device status information collected during the period when the audio is interrupted. is possible.

[0009]

As explained above, the present invention allocates the order wire audio signal to the same timing as the status information multiplex slot, and provides the audio input presence/absence determination circuit, so that when there is audio input, the audio signal is is multiplexed and is normally used to transfer status information. As a result, the time slot allocated for maintenance can be utilized to the maximum extent for status information transfer, and an order wire function can also be provided at the same time. On the receiving side too,
By adding and multiplexing voice/status identification information bits from the transmitting side, it becomes possible to identify and reproduce voice and status information. As a result, the order wire can be used while monitoring the status of the device, which has the effect of improving maintenance work efficiency and making effective use of less allocated maintenance time slots.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a detailed configuration diagram of this embodiment.

FIG. 3 is a format of a multiplexed signal train of the present invention.

FIG. 4 is a format of a conventional multiplexed signal string.

[Explanation of symbols]

11 Status information collection section 12 Audio input interface section 13 Timing control section 14 Multiplex circuit section 21 Memory write control section 22 Memory section 23 Memory read control section 24 Multiplex signal switching section 25 Multiplex circuit section 26 A/D conversion section 27 Coding section 28 Audio input presence/absence determination unit

Claims (2)

[Claims] Claim 1: A condition monitoring system that monitors the condition of subscriber wireless equipment and makes meeting calls at a remote location, which converts the voice input of the meeting into a digital signal and encodes it, and at the same time determines the presence or absence of voice input and multiplexes the voice input. an audio input interface unit that outputs audio input presence/absence information that serves as a switching signal; a status information collection unit that collects status information to know the internal state of the device and sends it to the multiplex circuit; and main signal input data and the status information. a multiplexing circuit section that multiplexes the status information string from the collection section, the audio signal string from the audio input interface section, and audio/status identification information for identifying whether the signal is an audio signal or a status signal; and the audio input interface section. 1. A status monitoring system comprising: a status information collection section; and a timing control section that provides necessary timing and various control signals to a multiplex circuit section. Claim 2: In a status monitoring system that monitors the status of a subscriber wireless device and makes a meeting call at a remote location, the format of the digital signal exchanged between the subscriber wireless device side and the monitoring device side is the status monitoring system. a shared time slot used for either status information or a voice signal for a meeting call; and a time slot for identification information that determines whether the shared time slot is used for status information or a voice signal. A condition monitoring system characterized by: