JPH08126065A - Remote controller - Google Patents

Abstract

PURPOSE: To reduce the power consumption of the remote controller of a device to be controlled operated while a control signal is received in response to an input key operation. CONSTITUTION: The remote controller 1 controlling remotely a simple crane 2 having a reception circuit 6 provided with a function keeping continuously the output of a control signal depending on reception data of a preceding frame to be received when reception data are not continuously received by receiving power from a battery E and sending transmission data in response to the input key operation is provided with a CPU 4 to control a transmission circuit 5 so that the transmission data are sent intermittently through the provision of a prescribed transmission data pause period within a range that the output of the control signal is kept continuously by the reception circuit 6 depending on the input key operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device, and more particularly to a remote control device for controlled equipment which operates only while a control signal is supplied in response to an input key operation.

[0002]

2. Description of the Related Art A remote control device for remotely controlling a controlled device has been known. The remote control device transmits a control signal to the controlled device by radio waves or infrared rays, and freely controls the operation of the controlled device according to the control signal.

The operation of the controlled device is roughly classified into two types. One is, for example, when operating the input key of the remote control device once such as the mode operation of a video tape recorder, the operation designated by the operation of the input key is continuously performed until another input key is pressed. It is the type to do. The other is that the control signal is supplied only while the input key of the remote control device is being pressed, such as the position control of the in-vehicle simple crane device or the opening / closing operation of the shutter opening / closing device of the garage. In this type, the operation designated by the input key is performed according to the above, and when the pressing of the input key is released, the control signal stops and the operation is stopped.

FIG. 5 is a transmission / reception timing chart of the conventional remote control device for remotely controlling the controlled device of the latter type by radio waves and the controlled device. Figure 5
5A shows the key operation of the remote control device, FIG. 5B shows the transmission data of the remote control device, FIGS. 5C and 5E show the reception data of the controlled device, FIG. 5D shows control signals of the controlled device.

In FIG. 5, from time t ₁ to time t _4, a key A (not shown) for designating a right turn of the simple crane device is pressed, and from time t ₄ to time t ₇ , the simple crane device is turned on. It is assumed that the key B (not shown) for designating the downward movement is pressed (FIG. 5 (A)). In the transmission circuit in the remote control device, the inputs from both keys are encoded, and after a predetermined time lag required for processing, key A
The encoded data a corresponding to the operation of No. ₂ is transmitted continuously from the time t ₂ to the time t _5, and the encoded data b corresponding to the operation of the key B is continuously transmitted from the time t ₅ to the time t ₈ . Off data OFF is transmitted after time t ₈ (FIG. 5 (B)).

[0006] The encoded data a and b are repeatedly transmitted in frame units. Here, the encoded data a is 7 frames and the encoded data b is 6 frames consecutively according to the operation time of each key A and B. Shall be transmitted. The off data OFF is also repeatedly transmitted in frame units. In the receiving circuit provided in the simple crane device that is the controlled device, from the time t ₂ to the time t
_The encoded data a is received up to ₅ times, the encoded data b is received from time t ₅ to time t _8, and the OFF data OFF is received promptly after time t ₈ (FIG. 5).
(C)).

Further, in the receiving circuit, each received data is decoded, and after a predetermined time lag required for processing, a control signal α corresponding to the encoded data a is supplied to the encoded data b from time t ₃ to time t _6. Corresponding control signal β
Is output from time t ₆ to time t ₉ . Control signal according to the off data OFF the time t ₉ after it is not output (Fig. 5 (D)).

Therefore, the simple crane device operates at time t _3.
From time t ₆ to time t ₆ is controlled by the control signal α and turns to the right, and from time t ₆ to time t _{9 the} control signal β
It is controlled to move downward. By the way, the receiving circuit of the simple crane device, which is usually a controlled device, considers radio wave interference and the like, and when several frames of the received data are not normally received, the normally received frame immediately before that is received. The control signal according to the received data is held and continuously output for a predetermined time.

Therefore, for example, as shown in FIG. 5 (E), the fourth frame and 6 to 7 of the encoded data a are
Even if the frame is not normally received, if the output holding time of the receiving circuit is set to the time corresponding to two frames or more, the control signal α is not interrupted from the time t ₃ to the time t _6. It is output continuously, and even if there is some radio interference, it does not interfere with the control of the simple crane device.

The remote control device has a small size, a light weight, and a wireless structure in consideration of convenience of operation, and is supplied with power from a dry battery housed inside to perform the above-described transmission operation.

[0011]

However, in the above-described conventional remote control device, each encoded transmission data is continuously transmitted without interruption of the frame while the input key is operated. For this reason, there is a problem that the power consumption is large and the dry battery is consumed quickly as a device that operates on the dry battery.

Therefore, the present invention has been made in view of the above points, and it is an object of the present invention to provide a remote control device capable of prolonging the life of a dry battery with low power consumption.

[0013]

In order to solve the above problems, the present invention has the following configuration. That is, when the received data is not continuously received, the controlled device having the receiving circuit having the function of continuously holding the output of the control signal according to the received data of the received previous frame is connected to the battery. In a remote control device that is remotely controlled by being supplied with power from the transmitter and transmitting transmission data according to an input key operation, a predetermined value within a range in which a receiving circuit can continuously hold an output of a control signal in response to an input key operation. The transmission data pause time is provided, and a control means for controlling the transmission circuit so as to intermittently transmit the transmission data is provided.

[0014]

According to the present invention having the above-described structure, the transmission data is intermittently transmitted by providing the transmission data pause time within a range in which the transmission circuit can continuously hold the output of the control signal. Even when it is continuous, the receiving circuit operates so as to continuously hold the output of the control signal in response to the input key operation.

[0015]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. In FIG. 1, 1 is a remote control device according to the present invention, and 2 is a vehicle-mounted simple crane device which is a controlled device. The remote control device 1 is a voltage source E that is a dry battery, an input key 3 for designating the operation of the simple crane device 2, and a CPU (central processing unit; Controlled by the CPU 4 in response to a command from the central processing unit 4) and the input keys 3, the control input from the CPU 4 is encoded and predetermined transmission data corresponding to the key operation is transmitted.
It is composed of a transmission circuit 5 that directly FSK-modulates weak radio waves in the MHz band and transmits the signals in frame units. The voltage source E may be a rechargeable secondary battery.

As shown in the external view of the device of the present invention in FIG. 2, the input keys 3 are a right turn key A and a down key B which are respectively arranged on the upper surface of the main body 10 of the remote control device.
And a left turn key C and an up key D. The above-mentioned voltage source E, CPU 4, and transmission circuit 5 are housed inside the remote control device body 10. The simple crane device 2 receives a frame-based transmission data from a crane arm 8 configured to hang a heavy object and vertically move and turn left and right, and decodes the frame-based reception data, A receiving circuit 6 that generates a control signal based on the received data, and a drive control circuit 7 that drives the crane arm 8 based on the control signal from the receiving circuit 6.
Composed of and.

The receiving circuit 6 receives the data when the received data becomes discontinuous due to radio wave interference or the like and is temporarily not received.
The output of the control signal according to the reception data of the normally received previous frame is continuously held for a predetermined time. Here, FIG. 3 is a control flowchart by the CPU 4, and FIG. 4 is a transmission / reception timing chart of the remote control device 1 and the simple crane device 2. In FIG. 4, FIG. 4 (A) shows key operations of the remote control device, FIG. 4 (B) shows transmission data of the remote control device, and FIGS. 4 (C) and 4 (E) show reception of the simple crane device 2. FIG. 4D shows the data and the control signal of the simple crane device 2, respectively. The transmission / reception timing using the remote control device 1 according to the present invention will be described below with reference to both drawings.

In FIG. 4, from time t ₁ to time t _10, the key A for designating the right turn of the simple crane device is pressed, and from time t ₁₀ to time t ₁₅ , the downward movement of the simple crane device is specified. It is assumed that key B is pressed (Fig. 4
(A)). The CPU 4 reads the key input data in step S1 of FIG. 3, and sets the frame transmission control variable n to 3 in the following step S2. Depending on the value of the frame transmission control variable n, the encoded data is controlled to be transmitted intermittently in frame units as described below.

That is, after setting n = 3, step S
By the process of 3, the data frame of the encoded data a is first transmitted after time t _{2 as} shown in FIG. 4B. A time lag required for processing is from time t ₁ to time t ₂ . In the subsequent step S4, the frame transmission control variable n is set to n-1 (= 2). After setting the frame transmission control variable n to n-1, a process of determining whether or not the frame transmission control variable n is 0 is executed in the following step S5. Here, since n = 2 ≠ 0 (No), the process returns to step S3, and another data frame of the encoded data a is continuously transmitted. Then, in the subsequent step S4, the frame transmission control variable n is set to n-1.
Let (= 1).

After setting the frame transmission control variable n to n-1, in the subsequent step S5, a process for determining whether or not the frame transmission control variable n is 0 is executed again. Since n = 1 ≠ 0 (No) here, the process returns to step S3 again, and another data frame of the encoded data a is continuously transmitted. By the processing up to this point, the data frame of the encoded data a has been transmitted continuously for three frames during the burst time T _B from the time t ₂ to the time t ₅ .

Encoded data a is consecutive for 3 frames
When transmitted, frame transmission control is performed in step S4.
The variable n is set to n-1 (= 0), and the subsequent step S5 is performed.
The frame transmission control variable n is 0 again.
Execute disconnection processing. Here, finally n = 0 (Yes)
Therefore, the process proceeds to step S6 and subsequent steps. In step S6
Reads the key input data, and this is step S1
Is it changed from the key input data read in advance?
Judgment processing is executed, but at time t _FiveKey input data
Since the data has not changed (No), the step
The process proceeds to step S7.

In step S7, it is determined whether or not a predetermined transmission data pause time T _R has elapsed. The transmission data pause time T _R is set as described later in relation to the output holding time of the receiving circuit 6. If the transmission data pause time T _R has not elapsed (No), the process returns to step S6 and subsequent steps, and the transmission data pause time T _R is set in step S7.
Until it is judged that _R has passed (Yes), step S6-
The process of S7 is repeatedly executed.

Time t₆When the specified transmission data is paused
Interval T_RWhen it is judged that the time has passed (Yes), the next step
Judgment as to whether or not the input key is operated in step S8
The process is executed. The input key is not operated (No)
If so, terminate all processing. However, here (time t
₆), The input key A is still operated (Yes)
Then, the processing returns to step S1 and the key input data is input again.
Key input data A read and read in step S1
Data frame (a) corresponding to the burst time T _BBetween
To output 3 frames continuously (steps S2 to S2)
S5) at time t₆From time t₈Run again until
You.

As a result, n = 0 (Y
es), and therefore, further continued, processing for pausing the transmission between the data frames of a predetermined transmission data downtime T _R (step S6～S7) was performed again, from time t ₈ t ₉
Until then, a predetermined transmission data pause time T _R is provided again. Time t _{9 when the} predetermined transmission data pause time T _R has elapsed
In step S7, since the result is (Yes), the process of determining whether or not the input key is operated is executed in step S8. Here (time t ₉ )
However, since the input key A is still being operated (Yes),
Returning to the processing of step S1, the processing (steps S1 to S5) of continuously outputting the data frame (a) corresponding to the key input data A read in step S1 for three frames during the burst time T _B is performed at time t _9. From time t ₁₁ to time t ₁₁ . Through the above-described processing, the data frame (a) is intermittently inserted with the predetermined transmission data pause time T _R interposed.
Are continuously transmitted for three frames.

By the way, the key operation is switched from A to B at time t ₁₀ between time t ₉ and time t _11, but after the key input data A is read at time t ₉ (step S1), at the time of time t ₁₀ are repeatedly executed the processing of steps S2 to S5, the key input data B is not loaded during this process. Then, at time t ₁₁ , the process of step S5 is executed, n = 0, and the process of step S6 is performed. Here, the key input data B is newly read for the first time, and this is the key input data read in step S1. A process of determining whether or not it has changed is executed.

Here, since the key input data has changed from A to B (Yes), the process returns to step S1 to read the key input data again, and the data frame corresponding to the key input data B read in step S1. The process (steps S2 to S5) of outputting (b) for three consecutive frames during the burst time T _B is executed again from time t ₁₁ to time t ₁₃ . Then, in the subsequent step S6, a process of determining whether the key input data has changed is executed.
At time t ₁₃ , the key input data has not changed (No), so that the process proceeds to step S7.

When the predetermined transmission data pause time T _R has not elapsed (No), the process returns to step S6, and it is determined that the predetermined transmission data pause time T _R has elapsed (Yes) as described above. The processing of steps S6 to S7 is repeatedly executed until the above. In this way, the predetermined transmission data pause time T is again set from the time t ₁₃ to the time t _16.
R is provided.

Predetermined transmission data pause time T_RIs finished
In step S7, it becomes (Yes) and the process proceeds to step S8.
Time t₁₆Since the key is not operated in the
At step S8, it becomes (No) and all processing is completed.
I do. After finishing all the processing, the transmission data is turned off.
Data OFF is continuously transmitted in frame units. This
As a result, the transmission data is transmitted in the predetermined transmission as shown in FIG.
Signal data pause time T _R3 consecutive frames across
Burst time T_BIt is transmitted intermittently every time. Well
Burst time T_BWhen the key input changes during
Tick t_TenSee also), but continuously transmit 3 frames of data
After finishing (time t₁₁New data is sent to
Start to get lost.

During the transmission data pause time T _R described above, the transmission circuit 5 temporarily stops the transmission operation and does not consume power. Accordingly, since the battery E is transmitting data downtime T _R is not temporarily depleted, than in the case of conventional remote control device continuously transmitting circuit batteries performs a transmission operation is continuously consumed, batteries E Can last longer.

In the receiving circuit 7 provided in the simple crane device 2, the encoded data a is recorded from time t ₂ to time t ₁₁ , the encoded data b is recorded from time t ₁₁ to time t ₁₄ , and the encoded data b is recorded from time t _11. Off data OFF after ₁₆ is received sequentially and promptly intermittently at the transmission timing (see FIG. 4).
(C)). Further, the receiving circuit 7 decodes each received data, and after a predetermined time lag required for processing, outputs a control signal α corresponding to the encoded data a from time t ₃ to time t ₁₂ and according to the encoded data b. Control signal β
Is output from time t ₁₂ to time t ₁₄ . After time t _14, the control signal is not output according to the transmission data pause time T _R and the OFF data OFF (FIG. 4 (D)).

[0031] Thus, during the crane arm 8 of the simplified crane apparatus 2 from time t ₃ to time t ₁₂ is controlled to pivot to the right by the control signals alpha, from time t ₁₂ t ₁₄
Until then, it operates so as to move downward under the control of the control signal β. By the way, the receiving circuit 6 of the simple crane device 2
In consideration of radio interference, when several frames of received data are not normally received and become discontinuous, a control signal corresponding to the received data of the frame normally received immediately before that is sent. It is configured to hold and continuously output for a predetermined time.

For this reason, for example, as shown in FIG. 4E, the second and third frames of the first burst and the first and second frames of the second burst of the encoded data a are from time t ₄ to time t. _{Between 5} and time t ₆ to time t
Even in the worst case where the reception is not normally performed during ₇ , the output holding time T _K of the receiving circuit 6 becomes as shown in the output holding time T _K ≧ transmission data pause time T _R + 2 × burst time T _B −1 frame length. If it is set, the control signal α is continuously output without interruption between the time t ₄ and the time t ₇ , and the control of the simple crane device 2 is possible without any interference from radio interference.

[0033]

As described above, according to the present invention, the transmission data is intermittently transmitted by providing the transmission data pause time within the range in which the transmission circuit can continuously hold the output of the control signal. Even if it becomes discontinuous, the receiving circuit can continuously hold the output of the control signal according to the input key operation,
By providing the transmission data pause time, the battery consumption by the transmission circuit can be reduced and the battery life can be extended, and it is also resistant to radio interference and does not hinder the operation of the controlled device. is there.

[Brief description of drawings]

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

FIG. 2 is an external view of the device of the present invention.

FIG. 3 is a control flowchart by a CPU 4.

FIG. 4 is a transmission / reception timing chart of the remote control device 1 and the simple crane device 2.

FIG. 5 is a transmission / reception timing chart of a conventional remote control device and a controlled device.

[Explanation of symbols]

 1 Remote Control Device 2 Simple Crane Device 3, A, B, C, D Input Key 4 CPU 5 Transmitter Circuit 6 Receiver Circuit 7 Drive Control Circuit 8 Crane Arm 10 Remote Control Device Body E Dry Battery

Claims (1)

[Claims] 1. A controlled device having a receiving circuit having a function of continuously holding an output of a control signal according to received data of a received previous frame when received data is not continuously received. In a remote control device that is remotely controlled by being supplied with power from a battery and transmitting transmission data according to an input key operation, wherein the receiving circuit continuously holds the output of the control signal according to the input key operation. A remote control device comprising a control means for controlling the transmission circuit so as to intermittently transmit the transmission data by providing a predetermined transmission data pause time within a possible range.