JPH10256988A - Data communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use this device not only as a data communication equipment but also as a sensor when data communication is not operated by providing an IR sensor. SOLUTION: Whether or not data to be transmitted from a CPU 101 are transmitted is detected by a data detecting circuit 103, and when the data are absent, a sensor mode switch is turned on, switching to a sensor oscillation circuit is operated, and an oscillation output is transmitted to an IR emitting element. When the data are present, a signal is transmitted from the detecting circuit 103 to a time-division switching circuit 104, whether or not a sensor forcing circuit 105 is functioned is detected. When the circuit 105 is not functioned, that is, when the data are transmitted, whether or not a time for transmitting the data is required is detected, switching to a data mode is operated, and the data are transmitted to the IR emitting element 107. Also, when the sensor forcing circuit 105 is functioned, the sensor mode switch is turned on, switching to the sensor oscillation circuit is operated, and the oscillation output is transmitted to the IR emitting element 107.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication device that functions as a data communication device and functions as a sensor when data is being transmitted.

[0002]

2. Description of the Related Art Conventionally, communication devices for data communication and the like do not have a function of detecting an object such as a person, and each device is required.

Japanese Patent Application Laid-Open No. 7-220188 normally functions as an infrared sensor, and outputs a signal corresponding to an infrared detection signal from an object to be detected output from the sensor and an infrared signal from an infrared irradiation device output from the sensor. And an infrared sensor device capable of transmitting the information of the signal as communication data with a communication function.

[0004]

In the above conventional example, it is not necessary to always output communication data, and the communication data does not function when the communication data is not necessary. However, the unnecessary time zone is effectively used to function as a sensor. There is no such idea.

Further, while transmitting communication data,
When it is necessary to enable the function of the sensor, there is no way to divide the data communication time in a time-sharing manner and improve the convenience by balancing the communication data function and the sensor function.

[0006]

According to a first aspect of the present invention, there is provided a data communication apparatus, comprising: a CPU for controlling a circuit; a data transmission circuit for transmitting data serially to an IR light emitting element; A detection circuit, an oscillator that oscillates at a certain frequency, a data receiving circuit that receives light transmitted from the IR light emitting element through the light receiving element as data, a sensor latch circuit that temporarily stores a signal from the sensor, and a certain time. A time division switching circuit that alternately switches between data communication and a sensor, a sensor forcing circuit that detects a signal from a sensor forcing switch, an IR light emitting element that emits light to a person or the like, and a person or the like emitted from the IR light emitting element bounces off. A data communication device comprising an IR light receiving element for receiving the reflected light and a waveform shaping for adjusting a signal from the IR light receiving element. Functions as a communication apparatus when the over data is communicated, a data communication apparatus, characterized in that the function as a sensor when data is not communicated.

According to a second aspect of the present invention, in the data communication apparatus of the first aspect, when data communication is being performed, the data communication function and the sensor function automatically and alternately function for a predetermined period of time. A data communication device characterized by functioning as a sensor when not performed.

According to a third aspect of the present invention, there is provided a data communication apparatus according to the first aspect, wherein the sensor is forcibly switched to a sensor even during data communication by pressing a sensor forcible switch. It is.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 is a block diagram of the present embodiment.

A CPU (10) for controlling each circuit
1), a data sending circuit (102) for sending data in series to the IR light emitting element (107), a data detecting circuit (103) for detecting the presence or absence of data to be sent, an oscillator (115) for oscillating a constant frequency, and an IR. Light emitting element (107)
A data receiving circuit (108) for receiving the transmitted light as data through a light receiving element (110), a time division switching circuit (104) for alternately switching between data communication and a sensor for a fixed time, and a signal from a sensor forcible switch (106). A sensor forcing circuit for detection (105), an IR light emitting element (107) for transmitting data transmitted from an object such as a person or a data transmitting circuit (102) to a light receiving element of a communication partner, and an IR light emitting element ( 107) An IR light receiving element (110) that receives light reflected from an object such as a person, a waveform shaping (109) for adjusting a signal from the IR light receiving element (110), and a signal from a sensor (114). And a sensor latch circuit (116) for temporarily storing data, and normally functions as a normal device. To function as a server.

(When transmitting data) CPU (10
Data is sent from 1) to the data sending circuit (102),
The data sending circuit (102) sends the data to the IR light emitting element in serial.

At this time, the changeover switch sets the data (111)
Switch to

The IR light emitting element (107) transmits the transmitted data to the other IR light receiving element to be transmitted by optical communication to perform data communication.

(In case of automatically switching to data communication and sensor) A time division switching circuit (104), in which the data detection circuit (103) detects the presence of data transmission, functions. The signal transmitted from the time-division switching circuit (104) can be automatically switched between the data communication mode and the sensor mode by alternately switching between low and high for a predetermined time (203).

For example, if a low is a data and a high is a sensor, then when a low signal is sent, the switch sets the data (1).
11 and 113), when a high signal is sent, the switch automatically switches to the sensor (112, 114) and sends a signal to the IR light emitting element (107).

The IR light emitting element (107) can alternately transmit a data signal in the data mode and a signal from the oscillator in the sensor mode (204), thereby achieving both data communication and the sensor.

(When it is desired to forcibly switch to the sensor) When the sensor forcible switch (106) is pressed, a signal is sent from the sensor forcing circuit (105). For example, if the signal of the sensor is high, the switch will switch to the sensor (112, 11).
By switching to 4), the signal of data communication is changed to a high signal (302).

The IR light emitting element (107) receives a high signal and emits light as a sensor.

The IR light receiving element (110) receives the reflected light from the IR light emitting element (107) and shapes the waveform (10).
9) Unstable signal is prepared and the sensor latch circuit (11)
Send to 6).

The transmitted signal is temporarily stored in the sensor latch circuit (116) and output to the sensor.

FIG. 2 shows waveforms at the time of automatically switching to sensor and data communication by time division in this embodiment.

Is a data signal (201), is an oscillator output signal (202), is a signal from the time division switching circuit (203), is an IR light emission signal (204), is a signal without data (205). ).

In the data communication (201), when the signal (203) from the time-division switching circuit (104) is in the data mode, it has a waveform such as a, b, c, d, and transmits the data. When the waveform is switched, the waveform waits for the time of the sensor mode from e 'to e (20).
1).

The output signal of the oscillator always emits a constant signal (202).

The IR light emitting element signal (204) transmits a data communication waveform (201) during the data mode switched by the time division switching circuit (104), and changes the waveform of the oscillator (115) during the sensor mode. Send.

If there is no data, there is no waveform.

FIG. 3 shows waveforms when the sensor is forcibly switched to the sensor according to the present embodiment.

The waveform at the time of data communication (301),
Is the waveform when the sensor is forcibly replaced (302), I
It is a waveform (303) of an R light emitting element.

For example, when the data signal is a low sensor signal, the waveform of data communication is normally (301), but when the sensor forcible switch is pressed, the waveform is switched from low to high and the sensor mode is entered (302). .

Then, the same signal as the output signal of the oscillator is transmitted from the IR light emitting element (303).

FIG. 4 shows the waveform of the sensor output of this embodiment.

The waveform from the IR light emitting element (40)
1) The waveform (402) from the IR light receiving element is
From the sensor latch circuit as a constant clock (403) is the waveform of the sensor output (404).
It is.

The sensor is detected from the first position where the signal from which the light from the IR light emitting element is emitted and the signal with the reflection of the IR light receiving element are overlapped.

FIG. 5 is a flowchart of the IR output of this embodiment.

The data detection circuit (10) determines whether or not data to be transmitted from the CPU (101) is being transmitted.
3) is detected (S501). If there is no data, the sensor mode switch is turned on (S507), the mode is switched to the sensor oscillation circuit (S508), and an oscillation output is sent to the IR (S509).

If there is data, the data detection circuit (1
03), a time-division switching circuit (104) signal is sent to function (S502), and it is detected whether the sensor forcing circuit (105) is functioning. If the sensor forcing circuit (105) is not functioning, If you send
It is detected whether or not a time for sending data is necessary, the mode is switched to the data mode, and data is sent to the IR light emitting element (S5).
03 to S506).

When the sensor forcing circuit (105) is functioning, the sensor mode is switched on, the mode is switched to the sensor oscillation circuit, and the oscillation output is sent to the IR light emitting element.

FIG. 6 is a flowchart of the IR input of this embodiment.

A signal is sent from the sensor receiving circuit (S6).
01), it is detected whether or not the sensor mode is set (S60).
2). When the sensor mode is set, it is detected whether or not there is an output from the IR light receiving element (S603). If there is an output, the sensor is operated (S604), so that a sensor detection signal can be transmitted (S605).

If the mode is not the sensor mode, data communication is assumed (S606).

Even when there is no output from the light receiving element, data communication is assumed (S606).

FIG. 7 is an external view of the data communication device with IR according to this embodiment.

An IR is added to a part of the front of the appearance of the data communication device.
There is a block in which a light emitting element and an IR light receiving element are installed.

The installed IR light emitting element and IR light receiving element function as a sensor when there is an object such as a person, or function as data communication when there is no object such as a person.

[0046]

According to the first aspect of the present invention, by attaching an IR sensor, the sensor can be used not only for data communication but also when data communication is not performed.

According to the second aspect of the present invention, the communication data is transmitted by alternately time-dividing the data communication and the sensor by the time-division switching circuit so as to make the communication data function and the sensor function compatible. In the meantime, the function of the sensor can be enabled.

According to the third aspect of the present invention, the sensor function can be interrupted even during data communication by pressing the sensor forcible switch.

[Brief description of the drawings]

FIG. 1 is a block diagram of a data communication device according to the present invention.

FIG. 2 is a diagram showing waveforms when switching to sensor and data communication is automatically performed in a time sharing manner.

FIG. 3 is a diagram showing a waveform in the case of forcibly switching to a sensor.

FIG. 4 is a diagram showing a waveform at the time of sensor output.

FIG. 5 is a flowchart showing the operation of the present invention (part 1);
It is.

FIG. 6 is a flowchart showing the operation of the present invention (part 2);
It is.

FIG. 7 is an external view of a data communication device of the present invention.

[Explanation of symbols]

 101 CPU 102 Data transmission circuit 103 Data detection circuit 104 Time division switching circuit 105 Sensor forcing circuit 106 Sensor forcing switch 107 IR light emitting element 108 Data receiving circuit 109 Waveform shaping 110 IR light receiving element 111, 113 Data 112, 114 Sensor 115 Oscillator 116 Sensor Latch circuit

Claims (3)

[Claims] 1. A CPU for controlling a circuit, a data sending circuit for sending data in series to an IR light emitting element, a data detecting circuit for detecting the presence or absence of data to be sent, an oscillator for oscillating a constant frequency, A data receiving circuit for receiving light transmitted from the light emitting element as data through the light receiving element, a sensor latch circuit for temporarily storing a signal from the sensor, and a time division switching circuit for alternately switching between data communication and the sensor for a fixed time; A sensor forcible circuit for detecting a signal from a sensor forcible switch, an IR light emitting element for emitting light to a person or the like, an IR light receiving element for receiving light emitted from the IR light emitting element and reflected by the person or the like,
A data communication device comprising a waveform shaping device for adjusting a signal from a light receiving element, wherein the data device functions as a communication device when data is being communicated, and functions as a sensor when data is not being communicated. Communication device. 2. The data communication device according to claim 1, wherein the data communication function and the sensor function automatically function alternately for a certain period of time when data communication is being performed, and as a sensor when data communication is not being performed. A data communication device that functions. 3. The data communication device according to claim 1, wherein the sensor is forcibly switched to a sensor even during data communication by pressing a sensor forcible switch.