JPS61293034A - Polling control system - Google Patents

Abstract

PURPOSE:To utilize effectively a radio wave by allowing a mobile station in an AVM system to send out an answer signal to a base station when its answer button is pressed for a specific time before or after a polling signal is received. CONSTITUTION:When the answer button 2g is pressed during the polling of the base station 1, a timer means 2l starts clocking the time. Then, a timing signal is generated by a main control means 2e during the reception of the polling signal P to detect whether the counted value of the timer means 2l which starts operating before the reception of the polling signal P is within a specific value or not and whether or not the answer button 2g is pressed within a specific time before the reception of the polling signal P. When the answer button 2g is pressed within the specific time before or after the polling signal P, the answer signal is transmitted to the base station.

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 the MoniLoring System (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 the mobile station that wants to respond presses the [registration switch (response button)], the mobile station sends a response signal to the base station according to the time slot (unique time slot or random slot) set for each mobile station. It will be sent back.

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

The present invention provides a polling control method in such an AVM system that limits the response time of a mobile station to within a certain period of time when polling is performed at a base station, and prevents the mobile station from responding during other times. It is.

[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, a voice instruction is given using the microphone 1a of the base station 1, saying ``Please proceed in the direction of O○ (empty cars)''. Then, release the audio press switch of the microphone 1a. In other words, when it is turned off, as shown in FIG.
will be sent to.

This polling signal P is received by a receiver 2b of the mobile station 2, for example, via 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 control bag %i2e presses the response button 2g.
is detected, and as shown in FIG. 3(b), a response signal including the own station number etc. is sent from the response signal generation means 2h through the modulation means 2i, the transmitter 2j and the antenna 2a at 11 o'clock. R is returned to the base station l. In this way, when polling the base station 1, you can listen to the buzzer sound and press the response button 2g as soon as possible, but if you press the response button 2g some time after the buzzer sound, or press the response button 2g before the polling signal P is received, If the button is pressed while saying "○ direction," each mobile station 2 transmits radio waves for a long time, causing interference between the base station's radio waves and the mobile station's radio waves, making it impossible to use the radio waves effectively. Therefore, when the response button 2g is pressed, the timer means 2Q is configured to start and measure time. Next, when the polling signal P is received, the main control means 2e generates a timing signal, and checks whether the timer means 2M started before the reception of the polling signal P is within a certain period of time, and whether the timing signal is within a certain period of time after the generation of the timing signal. It is detected whether the response button 2g is pressed within this time. For example, if the response button 2g is pressed for 5 seconds before the reception of the polling signal P = 4- and 1 second after the reception, the response signal R will be returned to the base station 1, and if it is pressed at any other time. will not be returned.

The subsequent operations of the mobile station 2 and base station 1 are not directly related to the present invention, but will be described later.

The response signal R from the mobile station 2 is sent to the reception antenna 1e of the base station 1, the receiver If, the demodulation means 1g, and the data detection 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 base station k, it will be registered in base station l. When this registration is completed, an answer-back signal A is transmitted from the answer-back signal generator IQ at 12:00 to the mobile station 2 that returned the response signal R via the transmitter 1c and the antenna 1d. Become.

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 2 to indicate that the own station has been registered with the base station 1. Further, a timer means 2Q for preventing the response signal R from being sent out even if the response button 2g is pressed for a certain period of time thereafter, for example 30 minutes, is activated from t3 to 14:00. 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, the present invention provides a polling control method in which, 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. A response signal is sent to the base station when a response button is pressed within a certain period of time before receiving the polling signal and within a certain period of time after receiving the polling signal,
Since transmission is not possible during other times, it is possible to make effective use of radio waves. Furthermore, it is possible to eliminate mobile stations that press the response button longer than necessary.

[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 are demodulation means, ], h, 2d are data detection means, li, 2s are main control means, Ij, 2k are display means, 1 is storage means, IQ is answer-back signal generation means, 2f is a buzzer device, 2g is a response button, 2h is a response signal generation device , 21 is a modulation means, and 2Q is a timer means.

Claims (1)

[Claims] (1) In a polling control method in which a mobile station that wants to respond sends a response signal to the base station by pressing a response button based on a polling signal from the base station, a certain amount of time is required before the mobile station receives the polling signal. A polling control method characterized in that a response signal is sent to a base station when a response button is pressed within a certain time period or within a certain time period after reception.