JPH08125613A - Mobile object information recording system - Google Patents

Abstract

PURPOSE: To record a stop mark at stop of a mobile object on same recording paper as correction information of a moving distance when the mobile object moves in an area covered by an optical signal sent from a light emitting device of a stator side and a light receiving level of an optical signal received by a light receiving device of the mobile object side is continuously recorded on recording paper at a paper feed speed according to a mobile speed detected by a speed detection means. CONSTITUTION: A recorder 11 of a mobile object is provided with a light receiving level recording section 4 continuously recording a light receiving level outputted from a log amplifier 3 onto recording paper as a voltage change, a recording paper feed speed control section 8 applying paper feed control to the recording paper at a paper feed speed according to a recorder use distance pulse outputted from a distance pulse interface 7, and a marker recording section 10 recording a marker onto the recording paper upon the receipt of a stop confirmation signal from a non-signal sensing circuit 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention installs an infrared transmitter near a track through which a moving body passes, and an optical signal from the transmitting side is received by a light receiver provided on the side of the moving body for optical communication. In optical space transmission, the present invention relates to a moving body information recording system having a distance correction function, which continuously records the light receiving level at each position where the moving body passes at a paper feeding speed corresponding to the moving speed on the moving body side.

[0002]

2. Description of the Related Art An optical space transmission in which an infrared transmitter is installed near a track through which a moving body such as a vehicle passes, and an optical signal of the transmitter is received by a light receiver provided on the moving body side for optical communication. In the method, when continuously recording the received light level at each moving position on the moving body side with a recorder using recording paper, conventionally, regardless of the moving speed of the moving body, the recorder is internally The light receiving level of the optical signal transmitted from the fixed body side light transmitter was continuously recorded at a constant paper feeding speed according to the self-oscillation circuit.

However, in such a conventional light receiving level recording means, the light receiving level of the optical signal transmitted from the fixed body side light transmitter at a constant paper feeding speed irrespective of the moving speed of the moving body. Since the continuous recording is performed, the distance moved cannot be recognized on the recording paper, and each distance,
Alternatively, there is a problem that the light receiving level corresponding to each position cannot be confirmed.

Therefore, when continuously recording the light receiving level of the optical signal received by the moving body side light receiver, the moving speed of the moving body is detected from the rotation speed signal of the wheel, and the paper feed speed corresponding to the moving speed of the moving body is detected. A recording means for continuously recording the light reception level of the optical signal has been considered.

However, in such a continuous recording means, during long-distance continuous recording, the distance error appears as a large distance error on the recording paper, and the recording of the light receiving level accurately corresponding to the distance or position is performed. There is a problem that you can not do.

That is, the rotation speed signal of the wheel used for displaying the speed of the moving body is inaccurate with respect to the original moving speed due to the wheel spinning during acceleration of the moving body or the lock during deceleration of the wheel. If several signals are generated and converted into a signal for controlling the paper feed speed of the recorder and used as they are, the error will appear as a large distance error on the recording paper during long-distance continuous recording, and the distance or position will be accurate. There is a problem that the corresponding light receiving level cannot be recorded.

[0007]

As described above, in the prior art, an infrared transmitter is installed near the orbit through which a moving body passes, and an optical signal from this transmitter is received by a receiver provided on the side of the moving body. In optical space transmission for optical communication, when the light receiving level at each moving position on the moving body side is continuously recorded by a recorder using recording paper, conventionally, the moving speed of the moving body is Regardless, the light receiving level was continuously recorded at a constant paper feed speed according to the self-oscillation circuit inside the recorder, so it was not possible to recognize the moved distance on the recording paper, and at each distance or each position. However, there is a problem that it is not possible to confirm the light receiving level corresponding to the above. Therefore, when continuously recording the light receiving level of the optical signal received by the moving body side light receiver, a recording means for continuously recording the light receiving level of the optical signal at a paper feeding speed corresponding to the moving speed of the moving body has been considered. This continuous recording means has a problem that during long-distance continuous recording, the distance error appears as a large distance error on the recording paper, and it is not possible to record the received light level accurately corresponding to the distance or position. .

The present invention has been made in view of the above circumstances,
In a system in which a fixed body and a moving body mutually perform optical space transmission by a light transmitter and a light receiver that transmit and receive optical signals, the fixed body side light transmitter transmits at a paper feeding speed corresponding to the moving speed of the moving body. By continuously recording the received light level of the received optical signal, the moved distance can be recognized on the recording paper, and the confirmation of the received light level corresponding to each distance or each position can be easily recognized on the recording paper and at the time of long-distance continuous recording. It is an object of the present invention to provide a moving body information recording method capable of correcting a distance error and recording a light reception level accurately corresponding to a distance or a position.

[0009]

DISCLOSURE OF THE INVENTION The present invention relates to an optical signal received by a moving body side light receiver when the moving body is traveling in an area covered by an optical signal sent from a fixed body side light transmitter. When continuously recording the light reception level, the light reception level of the optical signal is continuously recorded at the paper feed speed corresponding to the moving speed of the moving body, and at the specified distance or the specified position during the long distance continuous recording of the light reception level. When the moving body is temporarily stopped, and a stop mark for distance correction is recorded on the recording paper at each stop, and the stop mark is used to correct the moving distance, long-distance continuous recording of the light receiving level is performed. It is characterized in that the error in the distance on the recording paper that occurs is corrected.

That is, the present invention relates to a system comprising a fixed body and a movable body which mutually perform optical space transmission by a light transmitter and a light receiver for transmitting and receiving an optical signal, wherein a fixed body of the movable body is provided on the fixed body side. A light transmitter for transmitting an optical signal is provided within an area covering the moving range, and a light receiver for receiving the optical signal, a speed detecting means for detecting the moving speed, and a light receiver for receiving the light signal are provided on the moving body side. The fixed body side is provided with a recording means for continuously recording the received light level of the optical signal on the recording paper at a paper feeding speed according to the moving speed detected by the speed detecting means, and a recording means for recording a stop mark on the recording paper when stopped. When the moving body is moving within the area covered by the optical signal transmitted from the optical transmitter, the moving level detected by the speed detecting means is the light receiving level of the optical signal received by the optical receiver on the moving body side. Follow speed When continuous recording on the recording paper at a feeding speed, characterized by recording on paper the same record in stop mark when the moving body is stopped as the correction information of the movement distance.

[0011]

In the structure of the present invention described above, the light receiving level of the optical signal transmitted from the fixed body side light transmitter is continuously recorded on the recording paper at the paper feeding speed corresponding to the moving speed of the moving body, and Since the moving body is temporarily stopped at the designated distance or at the designated position and the stop mark at the time when the moving body is stopped is recorded on the same recording paper as the correction information of the moving distance, the moved distance can be recognized on the recording paper, The confirmation of the received light level corresponding to each distance or each position can be easily recognized on the recording paper, and at the time of continuous long distance recording, the error of the distance can be corrected to record the received light level accurately corresponding to the distance or position. It

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention. In FIG. 1, reference numeral 1 is an infrared transmitter on the fixed body side, which is installed near the orbit 1. 2 to 11
Are provided on the moving body side, and 2 is a light transmitter 1.
An infrared receiver for receiving the optical signal (infrared ray) sent from the device, 3 is a log amplifier for converting the optical signal (infrared ray) received by the optical receiver 2 into a DC voltage level signal (light receiving level signal), Reference numeral 4 denotes a light reception level recording section for continuously recording the light reception level value output from the log amplifier 3 as a voltage change amount on a recording sheet.

Reference numeral 5 is a wheel of the moving body, 6 is a generator which is a vehicle device for outputting a distance signal according to the rotation speed of the wheel 5,
7 is a distance pulse interface for converting the distance signal output from the generator 6 into a recorder distance pulse, and 8 is a recording paper of the recorder 11 at a paper feed speed according to the recorder distance pulse output from the distance pulse interface 7. A recording paper feed speed control unit for controlling paper feed.

The reference numeral 9 receives a pulse signal branched from the distance pulse interface 7 to detect a no-signal state due to the rotation stop of the wheels 5 due to the stop of the moving body, and outputs a stop confirmation signal when the state continues for a predetermined time. No signal sensing circuit, 10
Is a marker recording unit that records a stop marker on the recording paper of the recorder 11 when a stop confirmation signal is received from the no-signal detection circuit 9.

Reference numeral 11 denotes a light-reception level recording unit 4 for continuously recording on the recording paper the light-reception level value output from the log amplifier 3 as a voltage change amount, and a paper feed speed according to the distance pulse for the recorder output from the distance pulse interface 7. A recording paper feed speed control unit 8 for controlling the paper feed of the recording paper with
A recorder including a marker recording unit 10 for recording a marker on a recording sheet when a stop confirmation signal is received from the no-signal detection circuit 9, and an optical signal transmitted from the light transmitter 1 on the fixed body side is covered. When the moving body is moving in the area to be recorded, the light receiving level of the optical signal received by the light receiver 2 on the moving body side is recorded at the paper feed speed according to the moving speed detected by the rotation speed signal of the wheel 5 Continuous recording is performed on the paper, and a stop mark when the moving body is stopped is recorded on the same recording paper as correction information of the moving distance.

FIG. 2 is a diagram showing a recording signal waveform in the above embodiment, FIG. 2 (a) shows a recording waveform of a light receiving level, and FIG. 2 (b) shows a recording waveform of a stop marker. Is. In the figure, T1 indicates the deceleration period of the moving body, T2 indicates the acceleration time of the moving body, T3 indicates the constant velocity period of the moving body, and T4 indicates the stopping time of the moving body.

The operation of the embodiment of the present invention will be described below with reference to the drawings. An optical signal (infrared ray) is output from the infrared transmitter 1 installed at a predetermined position near the orbit for a predetermined area on the orbit.

When the moving body travels on the orbit and enters the area covered by the optical signal (infrared ray) output from the light transmitter 1, the light receiving device 2 mounted on the moving body is moved to the above-mentioned position. The optical signal (infrared ray) output from the light transmitter 1 is received.

A part of the optical signal (infrared ray) received by the light receiver 2 is branched for a recorder and input to the log amplifier 3. The log amplifier 3 converts the optical signal (infrared ray) input from the light receiver 2 into a DC voltage, and sends the optical signal level to the received light level recording unit 4 of the recorder 11 as a voltage change. The light reception level recording unit 4 of the recorder 11 continuously records the light reception level value output from the log amplifier 3 as a voltage change amount on the recording paper.

On the other hand, the rotation speed signal of the wheel 5 when the moving body travels in the above area is input to the generator 6.
The generator 6 converts the rotation speed of the wheel 5 into a distance signal of a sine wave corresponding to the frequency and sends it to the distance pulse interface 7.

The distance pulse interface 7 converts the distance signal output from the generator 6 into a recorder distance pulse and sends it to the recording paper sending speed control section 8 of the recorder 11. The recording paper feed speed control unit 8 of the recorder 11 controls the paper feed of the recording paper of the recorder 11 at the paper feed speed according to the distance pulse for the recorder output from the distance pulse interface 7. As a result, when the moving body is moving within the area covered by the optical signal sent from the light transmitter 1 on the stationary body side, the light receiving level of the optical signal received by the light receiver 2 on the moving body side is equal to the speed. Continuous recording is performed on the recording paper at a paper feed speed according to the moving speed detected by the detecting means.

The pulse signal branched from the distance pulse interface 7 is input to the no-signal sensing circuit 9. The no-signal detection circuit 9 outputs a stop confirmation signal to the marker recording unit 10 of the recorder 11 when the rotation stop state of the wheels 5 due to the stop of the moving body continues for a certain time.

When the marker recording unit 10 of the recorder 11 receives the stop confirmation signal from the no-signal detection circuit 9, the recorder 11 is stopped.
Record the stop marker on the chart paper. As described above, the recorder 11 includes the light reception level recording unit 4 that continuously records the light reception level value output from the log amplifier 3 as a voltage change amount on the recording paper, and the distance pulse for the recorder output from the distance pulse interface 7. A recording paper feed speed control unit 8 for controlling the paper feed at a paper feed speed according to the above, and a marker recording unit 10 for recording a marker on the recording paper when a stop confirmation signal is received from the no-signal detection circuit 9. When the moving body is moving within the area covered by the optical signal sent from the light transmitter 1 on the fixed body side, the wheel 5 rotates the light receiving level of the optical signal received by the light receiver 2 on the moving body side. Continuous recording is performed on the recording paper at the paper feed speed according to the moving speed detected by the number signal, and the stop mark when the moving body is stopped is recorded on the same recording paper as the correction information of the moving distance. Record. The recording waveform of the received light level at this time is shown in FIG.
The waveform shown in (a) and the stop marker recording waveform is shown in (b). Incidentally, in FIG. 2, T1 is the deceleration period of the moving body, and
2 is the acceleration time of the moving body, T3 is the constant speed period of the moving body, T4
Indicates the time when the moving body is stopped.

By the above operation, the received light level is continuously recorded as the voltage change at the paper feed speed corresponding to the moving speed of the moving body, and at the specified distance or the specified position during the continuous recording of the received light level over the long distance section. When the moving body is temporarily stopped, the stop marker is automatically recorded on the recording paper.By using the stop mark for distance correction, the distance error on the recording paper that occurs during long-distance continuous recording is corrected. can do.

[0025]

As described above in detail, according to the present invention, in the system composed of the fixed body and the movable body which mutually perform the optical space transmission by the light transmitter and the light receiver for transmitting and receiving the optical signal, Provided on the body side is a light transmitter that sends out an optical signal in an area that covers a predetermined movement range of the moving body, and on the moving body side, a light receiver that receives the optical signal,
A speed detecting means for detecting the moving speed, a recording means for continuously recording the light receiving level of the optical signal received by the light receiver on the recording paper at a paper feeding speed according to the moving speed detected by the speed detecting means, and a stop mark when stopped. When the moving body is moving within the area covered by the optical signal sent from the light transmitter on the fixed body side by providing recording means for recording on the recording paper, the light received by the light receiver on the side of the moving body. When continuously recording the light receiving level of the signal on the recording paper at the paper feed speed according to the moving speed detected by the speed detecting means, the stop mark when the moving body is stopped is recorded on the same recording paper as the correction information of the moving distance. With the configuration, the distance moved can be recognized on the recording paper, and the confirmation of the received light level corresponding to each distance or each position can be easily recognized on the recording paper. Errors by correcting the distance or easily on paper accurately record the corresponding received light level and the information recognition recorded position.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a recording signal waveform in the above embodiment ((a) is a diagram showing a recording waveform of a light receiving level, and (b) is a diagram showing a recording waveform of a stop marker).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Light transmitter (infrared light transmitter), 2 ... Light receiver (infrared light receiver), 3 ... Log amplifier, 4 ... Light reception level recording part, 5 ... Wheel, 6 ... Generator, 7 ... Distance pulse interface, 8 ... Recording paper feeding speed control unit, 9 ... No signal sensing circuit, 10 ... Marker recording unit, 11 ... Recorder.

Claims (1)

[Claims] 1. A system comprising a fixed body and a movable body that mutually perform optical space transmission by a light transmitter and a light receiver for transmitting and receiving optical signals, wherein the fixed body side covers a predetermined movement range of the movable body. A light transmitter for transmitting an optical signal is provided in the area where the optical signal is received, a light receiver for receiving the optical signal, a speed detecting means for detecting the moving speed, and an optical signal received by the light receiver are provided on the moving body side. Recording means for continuously recording the received light level on the recording paper at a paper feeding speed according to the moving speed detected by the speed detecting means,
When the moving body is moving within the area covered by the optical signal transmitted from the fixed body side optical transmitter, a receiver is provided on the moving body side by providing a recording means for recording a stop mark on the recording paper when stopped. When continuously recording on the recording paper the light reception level of the optical signal received by the paper feeding speed according to the moving speed detected by the speed detecting means, the stop mark when the moving body is stopped is the same as the correction information of the moving distance. A moving body information recording method characterized by recording on recording paper.