JPS61293032A - Polling control system - Google Patents

Abstract

PURPOSE:To gather only an answer signal from an unregistered mobile station in a simple AVM system by allowing a mobile station which receives an answer- back signal to send no answer signal for a specific signal even if an answer button is pressed. CONSTITUTION:The mobile station 2 which receive the answer-back signal turns on a display means 2k when confirming its code number in the answer- back signal A and also starts a timer means 2l which inhibits for a certain time an answer signal R from being sent out for the specific time even when the answer button 2g is pressed. Therefore, even if this mobile station 2 is unregistered and polled within said timer time, it is unable to make an answer, so only the answer signal from the unregistered mobile station is gathered.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention requests a response by voice from a wireless taxi or the like that wishes to register a dispatch order, and registers the station number of the mobile station that responds at a base station. A simplified AVM system (Automatic Vehicle) that displays
The present invention relates to a polling control method in a monitoring system (Monitoring 5ysten+: automatic display system for vehicle position, etc.).

[Summary of the present invention] In an AVM system that uses voice to request a response from a mobile station that wishes to register a dispatch order, the base station first instructs the base station by voice, ``Please proceed in the direction of OO (empty vehicles).''

When the audio press switch is released, the base station sends a polling signal. When a mobile station that wants to respond presses the "registration switch (response button)," a response signal is sent back from the mobile station to the base station according to the time slot (unique time slot or random slot) set for each mobile station. be done.

The base station that receives this response signal registers the station number of the responding mobile station and displays the station number.

In this invention, in such an AVM system, an answer back signal is sent back to the mobile station to inform the mobile station that it has been registered with the base station, and the mobile station that receives this signal is not allowed to respond to the next polling for a certain period of time. The present invention provides a polling control method based on the following methods.

[Example] The polling control method according to the present invention will be explained below.

FIG. 1 shows the configuration of the base station 1, and FIG. 2 shows the configuration of the mobile station 2.

First, use the microphone 1a of the base station 1 to give a voice command in the direction of O○ (empty cars), please J. Then, release the audio press switch of microphone Ia. In other words, when turned off, the polling signal P is transmitted from the polling signal generator 1b to each mobile station 2 via the transmitter 1c and the transmitting antenna ld at the time of to, as shown in FIG. 3(a). become.

This polling signal P is received by the receiver 2b of the mobile station 2 via, for example, an antenna 2a used for both transmission and reception. This received signal is demodulated into a digital signal by demodulation means 2c,
The data detection means 2d detects whether or not there is a normal data component, and further drives the buzzer device 2f to generate a buzzer sound via the main control means 2e consisting of a CPU or the like. Here, if the crew member wants to register his own station with the base station 2 and receive a dispatch command, etc., he presses the response button 2g. Then, the main controller 2e detects that the response button 2g is pressed, and the response signal generator 2h automatically transmits the signal at time tj via the modulation means 2i, the transmitter 2j and the antenna 2a as shown in FIG. A response signal R having a station number etc. is sent back to the base station 1.

The response signal R from the mobile station 2 is sent to the receiving antenna 1e of the base station I, the receiver If, the demodulating means 1g, and the data detecting means 1h.
It is displayed as a mobile station number on display means 1j such as a cathode ray tube via main control means 11, and is also displayed as a mobile station number on storage means 1.
By being stored in k, it will be registered in the base station 1. When this registration is completed, the answer back signal A is sent from the answer back signal generator IQ to the transmitter 1c and the antenna 1 at 12:00 as shown in FIG. 3(a).
It will be transmitted to the mobile station 2 that sent back the response signal R via d.

This answer back signal A is transmitted to the antenna 2a of the mobile station 2.
, receiver 2b, and data detection means 2 via demodulation means 2c.
d, and if the code number of the own station is confirmed in the answer/back signal A, the main control means 2e lights up the display means 2k for displaying that the own station has been registered with the base station 1. Also, a timer means 2Q is activated from 13:00 to t4 as shown in Fig. 3(b) to prevent the response signal R from being sent even if the response button 2g is pressed for a certain period of time thereafter, for example 30 minutes. I will do it. Therefore, during this time, the mobile station 2 is in the registered state and cannot respond even if there is polling.

[Effects of the Invention] As described above, in the present invention, based on a polling signal from a base station, a mobile station that wants to respond sends a response signal to the base station by pressing a response button, and notifies the base station that the response signal has been received. In a polling control method in which the base station sends an answer back signal back to the mobile station,
Since the mobile station that received the back signal is not able to send a response signal to the polling signal for a certain period of time even if it presses the response button, the next time the base station polls, the response signal from the registered mobile station will not be sent and no response signal will be sent. This method has the advantage that only response signals from registered mobile stations can be collected, and unnecessary radio wave interference can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a base station according to the present invention, and FIG.
The figure is a block diagram showing a mobile station according to the present invention, and FIG.
a) and (b) are signal waveform diagrams. In the figure, 1 is a base station, 2 is a mobile station, 1b is a polling signal generator, lc, 2j are transmitters, If, 2b is a receiver,
Ig, 2c is demodulation means, Ih, 2d is data detection means,
N, 2 e is the main control means, jp2 is the display means, 1 is the storage means, IQ is the answer/back signal generation means, 2
f is a buzzer device, 2g is a response button, 2h is a response signal generating means, 21 is a modulation means, and 2p is a timer means.

Claims (1)

[Claims] (1) Based on the polling signal from the base station, the mobile station that wants to respond sends a response signal to the base station by pressing the response button, and the base station sends an answer back signal to the mobile station indicating that it has received the response signal. A polling control method characterized in that a mobile station that receives an answer back signal is prevented from transmitting a response signal to the polling signal for a certain period of time even if it presses a response button.