JPS643382B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a taxi calling device that connects a taxi waiting area and a base and is used to call a taxi from the waiting area, and particularly relates to a taxi calling device that is used in combination with a taxi vacancy display means. Prior Art The present inventor has developed a device that divides a taxi driving area into a plurality of zones and transmits actual vacant taxis traveling within each zone to a base. This device installs a zone transmitter and a zone receiver in each zone, transmits actual vacant cars between the car transmitter and car receiver mounted on the taxi, and sends the output of the zone receiver to a wired line. It was then sent to the base, where empty vehicles in each zone were displayed. This device uses a dedicated system between the zone transmitter and zone receiver and the base in order to reduce the frequency band of the radio waves used, reduce the antenna power as much as possible, and further improve the reliability of the display. Must use wired. Normally, a dedicated telephone line is used for this wired line, but the dedicated telephone line is not used effectively enough just to transmit signals such as actual empty taxis within the zone, and is essentially used to transmit signals. The drawback was that the time period was limited. Purpose The present invention uses the transmission lines of zone transmitters and receivers installed in various locations to detect waiting customers, thereby detecting the presence of customers in each zone without the need for special dedicated lines. An important object of the present invention is that the customer's call signal and the actual vehicle or vacant vehicle signal can be effectively transmitted to the base via a dedicated line, and the base can ,
Since the empty car signal and passenger waiting signal for each zone are transmitted over the same line, it is easy to determine which taxi number is empty in the zone where the customer is hailing a car. Just by inserting a coin,
To provide a taxi calling device which can transmit information on the zone in which a passenger is waiting to a base, and furthermore, allows the customer to wait at ease since the customer is informed of the empty car status after inserting a coin. Configuration Examples of the present invention will be described below based on the drawings. The taxi calling device shown in FIG. 1 includes a zone transmitter 1, a zone receiver 2, and a distributed sensor means 6 installed in each divided zone, and a car transmitter 3 and a car receiver 4 installed in the taxi. and a wired line 7 connecting the zone receiver 2, zone transmitter 1, and distributed sensor means 6 to the base, and a display for displaying empty cars and passenger calls that have entered each zone via this wired line. means 5. Each zone transmitter 1 transmits zone radio waves within the zone in which the zone transmitter is installed. For example, zone radio waves are emitted from zone A.A zone radio waves are transmitted with sufficient strength to be received by the car receiver 4 of a taxi that enters zone A, and when a taxi leaves zone A and enters zone B. When A
The antenna power is determined so that the electric field strength decreases below a predetermined level at the boundary between the zone and the B zone. Therefore, the effective antenna power and antenna directivity of each zone transmitter depend on the size, shape, and
Adjacent zone transmitter antenna power, obstruction status,
It is determined by considering the reception sensitivity of the car receiver, etc.
When the width of the zone is, for example, several hundred meters, the power is generally determined to be several tens of microwatts to several tens of milliwatts, preferably several hundred microwatts to several milliwatts. By the way, the calling device having this structure detects which zone the taxi has entered by detecting which zone receiver 2 has received the transmitted radio wave from the car. Therefore, the frequencies of the radio waves in each zone can be made completely the same. In addition, so that the taxi can receive the zone radio waves no matter when the taxi enters the zone, the zone radio waves continuously use F1 or F2 type radio waves that are either unmodulated or one signal is FM modulated. It is better to do so. However, when placing a confirmation signal on this zone radio wave, when the zone receiver 2 receives the radio wave emitted from the taxi and the display means 5 confirms it, for example, the zone radio wave is FM-modulated with the taxi's vehicle signal. The modulated signal is then transmitted for about 1 to 5 seconds, and the transmission of the car transmitter 3 is stopped by this modulated signal. The car receiver 4 includes a control circuit for the car transmitter 3 that outputs an entry signal when the car enters each zone, and the control circuit controls the control circuit to detect when the car leaves one zone and the field strength of the zone radio waves falls below a predetermined level. It will be reset at some point. Therefore, for example, the control circuit issues an entry signal when the vehicle enters the A zone, is reset when the vehicle leaves the A zone, and issues an entry signal when the vehicle enters the B zone again. The car transmitter 3 is controlled by the control circuit of the car receiver 4 and the actual empty state of the taximeter. That is, the control circuit sends a signal to the car transmitter 3 when a signal is issued to detect that the taxi has entered a certain zone and when the actual empty state of the taximeter is changed, and the car transmitter Transmit car radio waves. In the vehicle radio waves, the taxi vehicle signal and the actual vacant vehicle signal are FM-modulated so that it can be determined which taxi is emitting the radio wave and whether the vehicle that is emitting the radio wave, that is, the taxi, is a real vehicle or an empty vehicle. ing. For example, as shown in Table 1, a vehicle signal consists of 10 channels of group signals with different frequencies and 10 channels of individual signals, and 100 vehicle signals are created by combining the group signals and individual signals. and individual signals are repeated for about 1 to 5 seconds at different times to transmit car radio waves.
FM modulated and transmitted. If the taxi is empty,
At the same time as the individual signal, for example, an 892.5Hz empty car signal
FM modulates. The actual empty vehicle signal may be transmitted on the vehicle radio waves only when the vehicle is actual or empty, but it is also possible to modulate signals with different frequencies depending on when the vehicle is actual or empty. The transmission state of the car transmitter 3 is stopped by a timer or a confirmation signal from the zone transmitter 1. The zone receiver 2 receives the car radio wave transmitted from the car transmitter 3, performs FM detection on it, and converts it into a vehicle signal.

【table】

[Table] Detects the actual empty vehicle signal and transmits it to the display means 5. The display means 5 sorts the signals sent from the zone transmitter using an analog or digital bandpass filter, displays the transmitted vehicle and the actual empty vehicle status of the vehicle, and also displays which zone receiver The system determines whether a signal has been sent from the vehicle and displays which zone the vehicle has entered. The distributed sensor means 6 installed in each zone includes a coin slot 8, a coin storage box 9 communicating with the coin slot 8, an insertion detection member for detecting that a coin has been sent into the slot, and a response sensor. It is equipped with a member. The insertion detection member includes a microswitch 10 whose lever is disposed in the coin insertion path, and as shown in FIG. It is connected to the. The monostable multivibrator 11 shapes the trigger pulse of the microswitch 10 into a pulse with a constant width of, for example, 0.1 to several seconds, and uses this pulse signal to generate the oscillation circuit 12.
for a certain period of time corresponding to the pulse width, e.g. 300
A customer waiting signal of Hz is oscillated and transmitted to the display means 5. The response member is used to notify customers of the arrival of a taxi, and the response member shown in FIG. 2 includes two pilot lamps 13 and 14, a speaker 15, and two sets of bandpass filters 15 and 16. There is. The bandpass filters 15 and 16 are used to select specific frequency signals sent from the base. For example, when a 305Hz signal is sent from the base, the upper bandpass filter 15 detects this and
This signal is sent to the upper switching circuit 17, which lights up the upper pilot lamp 13 and illuminates the display on the front of the pilot lamp 13, that is, the display "Please wait 5 minutes" to inform the customer. . Therefore, from the base, when making each person wait 5 minutes,
Sends a 305Hz signal. In FIG. 2, the lower bandpass filter 16 is
Passes 310Hz signals. Therefore, when the bandpass filter 16 receives a 310 Hz signal from the base, it sends this signal to the switching circuit 18, and the switching circuit 18 emits a display saying "Please wait 10 minutes." Therefore, from the base,
It transmits a 310Hz signal when making customers wait for 10 minutes. The speaker 15 is for emitting audio from the base, and is used to emit audio signals sent from the base, such as
A signal such as "Please wait for XX minutes" is generated.
Further, as shown by the chain line, it is also possible to provide a sound generation circuit 19 and control this sound generation circuit 19 with the outputs of the bandpass filters 15 and 16. In this case, the sound generation circuit 19 can be set to An audio signal such as "Please wait 5 minutes" or "Please wait 10 minutes" is stored in a memory such as a ROM, and this stored audio signal is sent to a speaker using the output signals of the bandpass filters 15 and 16. send. When the output signal of the switching circuit 18 connected to the 310Hz bandpass filter 16 is applied to the audio generation circuit 19, the audio generation circuit 19 generates a signal of "10
Please wait for 1 minute" signal is sent to the speaker 14, and the speaker 14 calls this, and the switching circuit 1 connected to the 305Hz bandpass filter 15
When the output signal No. 7 is applied to the sound generation circuit 19, the message "Please wait for 5 minutes" is heard from the speaker. The display means is installed at a base where the running conditions of all vehicles can be monitored. Therefore, the display means and the zone receiver are installed separately. The zone receiver signal is then electrically transmitted via the wired circuit 7 to the display means. For this wired circuit 7, it is preferable to use a telephone line of a public corporation. Signals from a plurality of zone receivers 2 are sent to the display means 5, and it is determined from which zone receiver 2 the vehicle signal and the actual vacant vehicle signal are transmitted. When the zone receiver 2 receives a signal emitted by a taxi and the signal is transmitted to the display means 5, the display means 5 conversely displays the signal emitted by the taxi that sent the radio wave. Send a confirmation signal to the taxi to let them know that the signal has been confirmed. Therefore,
The display means 5 sends a confirmation signal to the zone transmitter 1. The confirmation signal is a combination of the same county signal and individual signal as those sent by the taxi, and this confirmation signal is transmitted to the zone radio wave for 1 to 5 seconds, for example.
The confirmation signal is FM modulated and transmitted, and the in-vehicle receiver 4 of the taxi that is transmitting receives this confirmation signal, causing the in-vehicle transmitter 3 to stop transmitting. The confirmation signal, like the vehicle signal, is different for each vehicle. Therefore, each vehicle is equipped with a bandpass filter that selects only its own confirmation signal, for example, the same group signal and individual signal that it oscillates, and when it receives this confirmation signal. The transmission of the car transmitter 3 is stopped only when According to this method, even if two taxis emit radio waves at almost the same time, the display of the taxi that emitted the radio waves is completed first, and after this car transmitter 3 stops transmitting, the next taxi can perform taxi display processing. The display means 5 includes a bandpass filter 20 that selects the waiting signal sent from the distributed sensor means 6.
, a switching circuit 21 that is turned on and off by the output signal of this bandpass filter 20, and a waiting lamp 22 that is blinked by this switching circuit 21.
The band pass filter 20 is a band pass filter that passes only the 300 Hz signal which is the customer waiting signal, and the customer waiting signal passes through the band pass filter 20 and turns on the switching circuit 21. The customer waiting lamp 22 is also turned on by the switching circuit 21. The bandpass filter 20, the switching circuit 21, and the waiting lamp 22 are designed so that the number of wired lines connected to each zone and the distributed sensor means are smaller than the number of wired lines so that the waiting area can be displayed for each zone. There are as many waiting lamps 22 as there are distributed sensor means above the empty car display windows 23 in each zone. Further, the display means 5 includes two sets of oscillation circuits 24, 25 for turning on or off two pilot lamps 13, 14, which are response members of the distributed sensor means 6 disposed in each zone. Oscillation circuit 2
4 and 25, one side receives a 305Hz signal and the other side receives a 305Hz signal.
Oscillates a 310Hz signal. The oscillation circuits 24 and 25 are connected to response switches 26 and 2 disposed below the empty car display window 23 of each zone.
It is connected to the wire line 7 via 7 and 28.
The left response switch 26 is a 305Hz oscillation circuit 25
The central response switch 27 is connected to a 310Hz oscillation circuit 24. The right response switch 28 is for transmitting an audio signal to the speaker 14 of the distributed sensor, and is connected to a microphone 30 via an amplifier 29. The operation of the distributed sensor means 6 configured in this way is such that if a customer comes to the distributed sensor means 6 in zone B and inserts a coin, the coin insertion will be detected by the micro switch 10 and the micro switch 10 will detect the coin insertion. In response to the pulse signal from the switch 10, the oscillation circuit 12 of the distributed sensor oscillates a waiting signal of 300 Hz for a certain period of time, and this signal is sent to the display means 5 through the wired line 7. The band pass filter 20 in the B zone that receives this signal detects a 300 Hz signal and lights up the B zone customer waiting lamp 22 based on this signal, indicating that there is a B zone customer waiting at the base. Let me know.
When the dispatcher at the base learned of this, he looked at the vacant vehicle number in Zone B, notified the vacant taxi, and then turned on the response switch 26 or 27 in Zone B and sent a 305Hz or 310Hz signal to the wired line. 7, it is sent to the distributed sensor means 6 in the B zone,
Turn on either pilot lamp 13 or 14 to inform the customer that a taxi will be dispatched in 5 or 10 minutes. At this time, after turning on the B zone response switch 28 connected to the microphone 30, say "Please wait 10 minutes" into the microphone 30.
This sound is transmitted to the distributed sensor means speaker 1.
It is also a good idea to let the customers know by saying it from 4. By the way, the zone transmitter 1 and the car transmitter 3 may emit radio waves at the same time. This is because the zone transmitter 1 transmits continuously, so when the car transmitter 3 transmits, both radio waves are transmitted at the same time. Therefore, so that the zone receiver 2 and the vehicle receiver 4 can select both radio waves, the frequencies of the two radio waves are separated at least to the extent that they can be selected by the receiving means. Furthermore, when modulating signals to the zone transmitter 1 and the car transmitter 3, FM modulation is better than AM modulation. This is because, unlike AM, FM can only receive the stronger signal even if multiple radio waves are received at the same time, which has the effect of reducing malfunctions of the entire device. The number of an empty car is displayed on the empty car display window of the display means 5, and its operation is such that, for example, if taxi α enters the A zone, the car receiver 4 detects this and the control circuit operates. Then, the car transmitter 3 transmits car radio waves modulated by the vehicle signal and the actual empty car signal. This car radio wave is received by the zone receiver 2 of the A zone, and the zone receiver 2 transmits a signal to the display means 5 via the wired line 7, and the display means 5 displays that the taxi α has entered the A zone. After displaying the taxi number on the empty car display window 23 only when the taxi is empty, a confirmation signal is sent to the zone transmitter 3. When the zone transmitter 3 issues a confirmation signal, the car receiver 4 receives this and stops the transmission of the car transmitter 3. By the way, when the actual empty status of the taxi changes while driving in Zone A, that is, when a passenger gets on or off the taxi, the car transmitter 3 linked to the taximeter emits a car radio wave modulated by the vehicle signal and the actual empty car signal. , this car radio wave is sent to the display means 5 through the zone receiver 2, and the display means 5 changes the displayed actual empty car state and sends a confirmation signal to the zone transmitter 1, causing the car transmitter to transmit. Stop. In order to further reduce errors in the display of empty cars in each zone, all taxis should be checked in order at regular intervals.
All you have to do is call up one car at a time and check whether the car is real or empty. To check whether a specific taxi is real or empty, call the specific taxi by modulating the carriers of all continuously transmitted zone transmitters with the taxi's vehicle signal, and The configuration may be such that the carrier modulates the carrier with its own vehicle signal and the actual vacant vehicle signal, transmits the modulated signal, and responds. All you have to do is repeat this operation to check if all taxis are actually empty. Since taxis outside the zone do not respond, the zone transmitter and zone receiver set a timer to check one taxi so that if there is no response from the taxi after a certain period of time, the next taxi will be called. It is better to limit it by Effects As described above, in the taxi calling device according to the present invention, the vacant car number of each zone is displayed at the base, and the wired line for transmitting the actual vacant car signal of the taxi from each zone transmitter and zone receiver to the base is provided. Since it is also used for signal transmission and reception of the waiting sensor means for detecting waiting passengers, there is no need for a dedicated line for transmitting the waiting signals to the base, and in addition, empty cars and waiting cars can be transmitted over the same line. In addition, passengers waiting for a taxi can simply insert a coin and the base will be informed of the zone in which the passenger is waiting. After inserting a coin, you will be notified of the availability of nearby cars, so you can wait with peace of mind.

[Brief explanation of drawings]

1 and 2 are block diagrams showing one embodiment of the present invention. 1...Zone transmitter, 2...Zone receiver, 3
... Car transmitter, 4 ... Car receiver, 5 ... Display means, 6 ... Distributed sensor means, 7 ... Wired line, 8
... Input port, 9 ... Storage box, 10 ... Micro switch, 11 ... Monostable multivibrator, 1
2...Oscillation circuit, 13...Pilot lamp, 1
4...Speaker, 15...Band pass filter,
16...Band pass filter, 17...Switching circuit, 18...Switching circuit, 19...
Sound generation circuit, 20...Band pass filter, 2
1... Switching circuit, 22... Customer waiting lamp,
23... Empty car display window, 24, 25... Oscillation circuit,
26, 27, 28...response switch, 29...amplifier, 30...microphone.

Claims (1)

[Claims] 1. A zone transmitter and a zone receiver installed in a zone in which a vehicle travel display area is divided into a plurality of zones, a vehicle transmitter and a vehicle receiver installed in a taxi traveling within each zone, and the zone receiver. A wired line for transmitting the output signal of the wired line, a display means for displaying the vacant vehicle number of each zone based on the signal transmitted by the wired line, and a distributed sensor means disposed within the zone. The means is connected to a wired line that transmits the zone transmitter signal, the output signal is transmitted via the same wired line as the zone transmitter, and the distributed sensor is connected to the coin slot and the wired line. It is equipped with a coin storage chamber that communicates with the input slot, an insertion detection member that detects that a coin has been inserted into the input slot, and a vehicle dispatch response member. A taxi calling device configured to issue a signal and transmit it to a display means through a wired line, and a response from the display means to be transmitted to a response member of the distributed sensor means.