JP5390301B2 - Control device - Google Patents

Description

  The present invention relates to a control device, and more particularly to a control device having a switch.

  In the switch, when the switch is switched between the on state and the off state, chattering in which the switching operation is repeated a plurality of times may occur.

  Patent Document 1 discloses a technique for removing chattering by periodically detecting a switch state after a switch operation and determining the switch on state when the on state continues for a predetermined number of times. Yes. Patent Document 2 discloses a technique for removing chattering by maintaining the output of the interior lamp for a predetermined time after switching the door switch of the refrigerator.

JP 2002-318414 A JP 2007-147099 A

  However, the switch may malfunction not only after chattering immediately after the switch is switched but also after a long time has elapsed since the switch is switched. In this case, it has been difficult to cope with the conventional chattering removal technique.

  An object of this invention is to provide the control apparatus which can suppress the malfunctioning of a switch in view of the said subject.

The present invention relates to a switch for switching between an on state and an off state, and when a first time has elapsed since the switch to the on state was detected by the switch, the switch to the on state was performed. Even if a signal indicating an off state of the switch is output until a second time elapses after the judgment is made and the switch is turned on, the switch is turned off. And a determining unit that determines that switching has not been performed. ADVANTAGE OF THE INVENTION According to this invention, when switching to an ON state is performed, the control apparatus which can suppress a malfunctioning of a switch can be provided.

The present invention relates to a switch for switching between an on state and an off state, and when a third time has elapsed since the switch to the off state was detected by the switch, the switch to the off state was performed. Even when a signal indicating the ON state of the switch is output until a fourth time elapses after the determination is made and the switch is determined to be switched to the OFF state, the switch is switched to the ON state. And a determining unit that determines that switching has not been performed. ADVANTAGE OF THE INVENTION According to this invention, when switching to an OFF state is performed, the control apparatus which can suppress a malfunctioning of a switch can be provided.

In the above configuration, the determination unit determines that the switch has been switched to the off state when a third time has elapsed since the switch has detected the switch to the off state, and the switch It is determined that the switch has not been switched to the ON state even when a signal indicating the switch's ON state is output until the fourth time has elapsed since the switch to the OFF state was performed. It can be configured. According to this configuration, it is possible to provide a control device capable of suppressing the malfunction of the switch when switching to the on state and the off state is performed.

  In the above configuration, the switch includes a first contact, a second contact, a pressing unit that presses the first contact toward the second contact, and the first contact is separated from the second contact. Biasing means for biasing the pressing means, and when the first contact and the second contact are in contact with each other, switching to an ON state is performed, and the first contact and the second contact When the two are separated from each other, it can be configured to switch to the off state. According to this configuration, even when a switch having a contact that easily generates chattering is used, malfunction of the switch can be suppressed.

  The said structure WHEREIN: The said biasing means can be set as the structure which consists of an elastic body. According to this configuration, even when a switch that easily generates chattering is used, malfunction of the switch can be suppressed.

  In the above configuration, the first time may be a chattering removal time of the switch. According to this configuration, the switch can be controlled using the chattering removal time (first time) and the detection cancellation time (second time).

  In the above configuration, the third time may be a chattering removal time of the switch. According to this configuration, the switch can be controlled using the chattering removal time (third time) and the detection cancellation time (fourth time).

The present invention relates to a switch for switching between an on state and an off state, and when a first time has elapsed since the switch to the on state was detected by the switch, the switch to the on state was performed. Determining means for determining that the switch has not been switched to the OFF state until a second time has elapsed after determining that the switch has been switched to the ON state; And the first time is a control device shorter than the second time. According to the present invention, it is possible to speed up the response of the switch by shortening the first time and to suppress the malfunction of the switch by lengthening the second time.

The present invention relates to a switch for switching between an on state and an off state, and when a third time has elapsed since the switch to the off state was detected by the switch, the switch to the off state was performed. Determining means for determining that the switch has not been switched to the ON state until a fourth time has elapsed since it was determined that the switch has been switched to the OFF state; And the third time is a control device shorter than the fourth time. According to the present invention, it is possible to speed up the response of the switch by shortening the third time and to suppress the malfunction of the switch by lengthening the fourth time.

  ADVANTAGE OF THE INVENTION According to this invention, the control apparatus which can suppress the malfunctioning of a switch can be provided.

FIG. 1 is a block diagram illustrating the configuration of the control device according to the first embodiment. FIG. 2 is a functional block diagram illustrating the configuration of the control device according to the first embodiment. FIG. 3A to FIG. 3D are cross-sectional views illustrating the switch according to the first embodiment. FIG. 4A and FIG. 4B are time charts illustrating the control of the control device according to the first embodiment. FIG. 5 is a flowchart illustrating the control of the control device according to the first embodiment. FIG. 6 is a flowchart illustrating the control of the control device according to the first embodiment.

  Embodiments of the present invention will be described with reference to the drawings.

  First, the configuration of the control device 100 according to the first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram illustrating the configuration of the control device 100 according to the first embodiment.

  As shown in FIG. 1, the control device 100 includes, for example, a control unit 2 that is a microcomputer, a switch 4, a storage unit 6 that is a RAM (Random Access Memory), a ROM (Read Only Memory), and an I / F (interface) 8. Is provided. The control means 2 performs signal input / output with the switch 4. The switch 4 switches between an on state and an off state. The storage unit 6 stores chattering removal time and detection cancellation time, which will be described later. The I / F 8 is, for example, a USB (Universal Serial Bus) interface and connects to an external device such as a computer. The on / off switching signal transmitted by the switch 4 is transmitted to the external device via the control means 2 and the I / F 8.

  FIG. 2 is a functional block diagram illustrating the configuration of the control device 100 according to the first embodiment.

  As shown in FIG. 2, the control device 100 includes a detection unit 10, a determination unit 12, a first timer 14, a second timer 16, a first setting unit 18, and a second setting unit 20. The control unit 2 in FIG. 1 functions as the detection unit 10, the determination unit 12, the first timer 14, the second timer 16, the first setting unit 18, and the second setting unit 20.

  The detecting means 10 detects a signal from the switch 4 in FIG. That is, the detection means 10 detects switching between the on state and the off state by the switch 4. The first timer 14 measures the time after the switch 4 is switched between the on state and the off state. The determination unit 12 determines whether the switch 4 has switched between the on state and the off state. As will be described later, when the time measured by the first timer 14 reaches the chattering removal time (first time, third time), the determination unit 12 determines whether the switch 4 is on or off. It is determined that switching has been performed. That is, switching by the switch 4 is confirmed. The first setting means 18 sets the chattering removal time of the switch 4 in FIG. The second timer 16 measures the time after it is determined that the switch 4 has switched between the on state and the off state. As will be described later, the detection means 10 does not detect switching between the on state and the off state by the switch 4 until the detection cancel time elapses. That is, the determination unit 12 is switched between the on state and the off state by the switch 4 until the time measured by the second timer 16 reaches the detection cancellation time (second time, fourth time). Judge that there is no. The second setting means 20 sets the detection cancellation time.

  Next, an example of the switch 4 will be described. FIG. 3A to FIG. 3D are cross-sectional views illustrating the switch according to the first embodiment.

  The switch 4 shown in FIG. 3A includes a first contact 22, a second contact 24, a pressing portion 26 (pressing means), a spring 28 (biasing means), a sheet 30, and a spacer 32. That is, the switch 4 is a membrane switch. The sheet 30 is made of a conductor, and the spacer 32 is made of an insulator. The sheet 30 and the spacer 32 form a cavity 23. The first contact 22 and the second contact 24 are provided on the surface of each of the two sheets 30 in the cavity 23 so as to face each other. Since the spacer 32 is provided between the two sheets 30, the first contact 22 and the second contact 24 are separated from each other.

  The pressing portion 26 and the spring 28 are disposed above the first contact 22 and the second contact 24. The spring 28 urges the pressing portion 26 upward in the drawing. That is, the spring 28 urges the pressing portion 26 so that the first contact 22 and the second contact 24 are separated from each other. The pressing portion 26 includes a plate portion 26a and a column portion 26b. When the plate portion 26 a is pressed, the pressing portion 26 moves downward, and the column portion 26 b comes into contact with the sheet 30. The first contact 22 moves in the direction of the second contact 24 as the pressing portion 26 moves further downward. That is, the pressing portion 26 presses the first contact 22 in the direction of the second contact 24.

  A wiring pattern is formed on the surfaces of the first contact 22 and the second contact 24 facing each other. For this reason, when the 1st contact 22 and the 2nd contact 24 contact, the wiring pattern formed in the 1st contact 22 and the 2nd contact 24 will conduct. At this time, the switch 4 outputs a signal. That is, when the first contact 22 and the second contact 24 come into contact, the switch 4 switches to the on state. On the contrary, when the first contact 22 and the second contact 24 are separated from each other, the switch 4 switches to the off state.

  The switch 4 shown in FIG. 3B includes two metal pieces 34a and 34b. That is, the switch 4 is a mechanical switch. The metal piece 34a is bent upward in the figure. A first contact 22 is provided on the metal piece 34a, and a second contact 24 is provided on the metal piece 34b so as to be separated from each other and face each other. When the plate part 26a of the pressing part 26 is pressed, the column part 26b of the pressing part 26 comes into contact with the metal piece 34a. That is, the pressing portion 26 presses the first contact 22 in the direction of the second contact 24. In addition, description was abbreviate | omitted about the structure common to Fig.3 (a).

  The switch 4 shown in FIG. 3C includes a conductive rubber 36 (biasing means). The conductive rubber 36 is provided on the sheet 30, and the sheet 30 and the conductive rubber 36 form the cavity 25. That is, the switch 4 is a conductive rubber switch. The first contact 22 is provided in the cavity 25 on the surface of the conductive rubber 36, and the second contact 24 is provided in the cavity 25 on the surface of the sheet 30 so as to face each other. When the plate portion 26 a of the pressing portion 26 is pressed, the column portion 26 b of the pressing portion 26 comes into contact with the conductive rubber 36. That is, the pressing portion 26 presses the first contact 22 in the direction of the second contact 24. Further, the conductive rubber 36 biases the pressing portion 26 upward in the drawing. That is, the conductive rubber 36 urges the pressing portion 26 so that the first contact 22 and the second contact 24 are separated from each other.

  The switch 4 shown in FIG. 3D includes a rubber 38. That is, the switch 4 shown in FIG. 3D is provided with a rubber 38 instead of the spring 28 in the switch 4 shown in FIG. The rubber 38 urges the pressing portion 26 so that the first contact 22 and the second contact 24 are separated from each other.

  Next, the control of the control device 100 according to the first embodiment will be described. First, it demonstrates with reference to a time chart. 4A and 4B are time charts illustrating the control of the control device 100. FIG. A solid line in the figure indicates a signal of the switch 4. When the signal is on the upper side, the switch 4 is in an off state, and when it is on the lower side, the switch 4 is in an on state.

  As shown in FIG. 4A, the switch 4 of FIG. 1 that is initially in the off state is switched to the on state at time A in the figure. At this time, as described in FIGS. 3A to 3D, the first contact 22 and the second contact 24 come into contact with each other. The switch 4 in FIG. 1 transmits a signal, and the detection means 10 in FIG. 2 detects the signal. At this time, the pressing portion 26 vibrates in the vertical direction in the drawing due to, for example, fluctuation of the pressure to be pressed or the elastic force of the spring 28 in the example of FIG. 3A, and the first contact 22 also vibrates accordingly. Sometimes. For this reason, the first contact 22 and the second contact 24 repeat contact and separation. As a result, as shown in FIG. 4A, so-called chattering in which the signal of the switch 4 flutters occurs. The determination means 12 in FIG. 2 determines that the switch 4 has not been switched to the ON state until the time T1 (first time) has elapsed from A in FIG. 4A, and T1 has elapsed. In this case, it is determined that switching to the ON state has been performed. Thereby, the fluttering of the signal due to chattering can be ignored. That is, T1 is chattering removal time, and the length is, for example, several ms to several tens of ms. As described in FIG. 2, the first setting unit 18 sets T1, and the first timer 14 measures T1. At time B when T1 elapses, the determination unit 12 determines that the switch 4 has been switched to the ON state. That is, switching to the ON state by the switch 4 is confirmed in B.

  The second timer 16 in FIG. 2 measures the time from the point B when the switch 4 is determined to be turned on. As shown in FIG. 4A, when the switch 4 is switched to the OFF state at time C after B and before T2 elapses, the detection means 10 does not detect switching by the switch 4. That is, the determination unit 12 determines that the switch 4 has not been switched to the OFF state until the time T2 (second time) has elapsed from B. Similarly, when the switch 4 is switched to the ON state at time D, the detection unit 10 does not detect switching by the switch 4. That is, the determination unit 12 determines that the switch 4 has not been switched to the ON state until time T2 (second time) has elapsed from B. In other words, the control device 100 cancels switching by the switch 4 until T2 elapses. That is, T2 is a detection cancellation time. As described in FIG. 2, the second setting means 20 sets T2, and the second timer 16 measures T2.

  As shown in FIG. 4A, the time point E is the time point when the time T2 has elapsed from B. When the switch 4 is switched to the OFF state at F, which is a time point after E, the detection means 10 detects the signal from the switch 4. At this time, as described in FIGS. 3A to 3D, the first contact 22 and the second contact 24 are separated from each other. However, as in the case of switching to the on state, chattering may occur in switching to the off state. The determination unit 12 determines that the switch 4 has not been switched to the OFF state until the time point G at which the time T3 has elapsed from F, and determines that the switch to the OFF state has been performed when T3 has elapsed. . That is, switching to the OFF state by the switch 4 is confirmed in G. Thus, T3 is chattering removal time.

  The time point H shown in FIG. 4B is the time point when the switch 4 is switched to the ON state as in the case of A shown in FIG. This is the point in time when switching is confirmed. The time point J is H in FIG. 4B, that is, the time point T2 has elapsed since the switch 4 was confirmed to be turned on. K, which is a time point after J, is a time point when the switch 4 is switched to the OFF state, as in F shown in FIG. Further, the time point L is a time point at which switching to the OFF state by the switch 4 is confirmed, as in G shown in FIG.

  The second timer 16 in FIG. 2 measures the time from L when switching to the off state by the switch 4 is confirmed. As shown in FIG. 4B, when the switch 4 is switched to the ON state at a time M after L and before T4 has elapsed, the detection unit 10 does not detect switching by the switch 4. That is, the determination unit 12 determines that the switch 4 has not been switched to the ON state until the time T4 has elapsed from L. Similarly, when the switch 4 is switched to the OFF state at the time N, the detection unit 10 does not detect the switching by the switch 4. That is, the determination unit 12 determines that the switch 4 has not been switched to the OFF state until the time T4 has elapsed from L. In other words, the control device 100 cancels the switching by the switch 4 until T4 elapses. That is, T4 is a detection cancellation time.

  Next, a description will be given with reference to a flowchart. 5 and 6 are flowcharts illustrating the control of the control device 100.

  FIG. 5 is a flowchart when switching to the ON state is performed. As shown in FIG. 5, first, the switch 4 of FIG. 1 is switched to the on state (step S1). After step S1, the determination means 12 determines whether or not T4 which is the detection cancellation time after the switching to the OFF state shown in FIG. 4B has elapsed (step S2). In the case of No, the detection means 10 does not detect switching to the ON state by the switch 4, and the control ends. In the case of Yes, the detection means 10 detects switching to the ON state by the switch 4 (step S3). After step S3, the determination means 12 determines whether or not the switch 4 has been switched to the on state (step S4).

  If yes, the control ends. In the case of No, the determination unit 12 determines whether the switch 4 is a switch that is being confirmed for switching (step S5). That is, the determination means 12 determines whether the switch 4 is measuring the chattering removal time T1, which is the time from A to B in FIG. 4A or from H to I in FIG. 4B.

  In the case of No, the first timer 14 in FIG. 2 starts measuring time from when the switch 4 switches to the on state (step S6). That is, the first timer 14 measures the time from A in FIG. 4A or H in FIG. 4B. After step S6, the control ends.

  If Yes in step S5, the determination unit 12 determines whether the time T1 has elapsed (step S7). In the case of No, the determination unit 12 determines that the switch 4 has not been switched to the on state, and the control ends. In the case of Yes, the determination means 12 determines that the switch 4 has been switched to the on state (step S8). That is, switching to the ON state by the switch 4 is confirmed.

  After step S8, the control device 100 of FIG. 1 transmits a signal for switching the switch 4 to the ON state via the I / F 8 to the external device (step S9). After step S9, the second timer 16 starts measuring time after the switch 4 is confirmed to be switched on (step S10). That is, the second timer 16 measures the time from B in FIG. 4A or I from FIG. 4B. After step S10, the control ends.

  FIG. 6 is a flowchart when switching to the OFF state is performed. Steps S11 to S20 in FIG. 6 correspond to steps S1 to S10 in FIG. 5, respectively.

  As shown in FIG. 6, first, the switch 4 in FIG. 1 is switched to an off state (step S11). After step S11, the determination means 12 determines whether or not T2 which is the detection cancellation time after the switching to the OFF state shown in FIGS. 4A and 4B has been determined (step S12). In the case of No, the detection means 10 does not detect switching to the OFF state by the switch 4, and the control ends. In the case of Yes, the detection means 10 detects the switch to the OFF state by the switch 4 (step S13). After step S13, the determination means 12 determines whether switching to the off state by the switch 4 is confirmed (step S14).

  If yes, the control ends. In the case of No, the determination unit 12 determines whether the switch 4 is a switch that is being confirmed for switching (step S15). That is, the determination unit 12 determines whether the switch 4 is measuring the chattering removal time T2, which is the time from F to G in FIG. 4A or from K to L in FIG. 4B.

  In No, the 1st timer 14 of Drawing 2 starts measurement of time after switching to an OFF state by switch 4 (Step S16). That is, the first timer 14 measures the time from F in FIG. 4A or the time from K in FIG. 4B. After step S16, the control ends.

  If Yes in step S15, the determination unit 12 determines whether the time T3 has elapsed (step S17). In the case of No, the determination unit 12 determines that the switch 4 has not been switched to the off state, and the control ends. In the case of Yes, the determination means 12 determines that the switch 4 has been switched to the off state (step S18). That is, switching to the off state by the switch 4 is confirmed.

  After step S18, the control device 100 in FIG. 1 transmits a signal for switching the switch 4 to the OFF state to the external device via the I / F 8 (step S19). After step S19, the second timer 16 starts measuring time after the switch 4 is confirmed to be switched off (step S20). That is, the second timer 16 measures the time from L in FIG. After step S20, the control ends.

  According to the first embodiment, the switching between the on state and the off state is not determined until the chattering removal time (the times T1 and T3 illustrated in FIGS. 4A and 4B) has elapsed. Further, the control device 100 determines that switching between the on state and the off state has not been performed until the detection cancellation time (time T2 and T4) elapses. For this reason, chattering immediately after switching can be removed. Further, even if a switch occurs after a long time has elapsed since switching, switching due to the swing is not detected. For this reason, it becomes possible to suppress the malfunction of the switch.

  T1 and T3 may have different lengths or the same length. Similarly, T2 and T4 may have different lengths or the same length. Further, T1, T2, T3, and T4 may be the same time or different times. Therefore, an arbitrary time can be set in consideration of user operability and switch properties. For example, the switch reaction can be accelerated by shortening the chattering removal times T1 and T3, and the malfunction of the switch can be suppressed by increasing the detection cancellation times T2 and T4. Therefore, T1 and T3 are preferably shorter than T2 and T4, respectively.

  In the case of a switch having a contact point and an urging means as shown in FIGS. 3A to 3D, chattering immediately after switching is caused by a fluctuation in pressure for pressing the switch or an urging force of the urging means. In addition, contact and separation of contacts may occur after a long time has elapsed since switching (see C and D in FIG. 4A and M and N in FIG. 4B). In particular, when the urging means is made of an elastic body, contact and separation of the contacts as described above are likely to occur. According to the first embodiment, since the detection canceling time is provided in addition to the chattering removal time, not only chattering immediately after switching but also malfunction of the switch after a long time has elapsed since switching can be suppressed. .

  The malfunction of the switch as described above can occur even in a switch that does not have a contact or a biasing means. As an example of the switch 4, a membrane switch, a mechanical switch, and a conductive rubber switch have been described, but the present invention is not limited to this. Further, the spring 28 (FIGS. 3A and 3B), the conductive rubber 36 (FIG. 3C), and the rubber 38 (FIG. 3D) were used as the biasing means. It is not limited.

  The first embodiment is an example in which the control is performed using the chattering removal time and the detection cancellation time in both the switching to the on state and the switching to the off state by the switch 4, but the application example of the present invention is applied to this. It is not limited. The control using the chattering removal time and the detection cancellation time may be performed by either switching to the on state or switching to the off state by the switch 4. In particular, in the case of switching to the ON state, chattering is likely to occur. Therefore, it is preferable to perform control using the chattering removal time and the detection cancellation time.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed.

Control means 2
Switch 4
Storage means 6
I / F 8
Detection means 10
Judging means 12
First timer 14
Second timer 16
First setting means 18
Second setting means 20
First contact 22
Second contact 24
Press part 26
Spring 28
Conductive rubber 36
Rubber 38
Control device 100

Claims (9)

A switch for switching between an on state and an off state;
When a first time has elapsed since detecting the switch to the on state, it is determined that the switch has been switched to the on state,
In addition, even when a signal indicating the off state of the switch is output until a second time has elapsed since it was determined that the switch was turned on , the switch was turned off. A control unit comprising: a determination unit configured to determine that the device is not connected. A switch for switching between an on state and an off state;
When a third time has elapsed since detection of switching to the off state by the switch, it is determined that switching to the off state by the switch has been performed,
In addition, even when a signal indicating the ON state of the switch is output until a fourth time has elapsed since it is determined that the switch has been switched to the OFF state, the switch is switched to the ON state. A control unit comprising: a determination unit configured to determine that the device is not connected. The determination means determines that the switch to the off state has been performed when a third time has elapsed after detecting the switch to the off state,
And even if the signal which shows the ON state of the said switch is output until the 4th time passes after switching to the OFF state by the said switch , the switch to the ON state is not performed by the said switch The control device according to claim 1, which determines that The switch includes a first contact, a second contact, a pressing means for pressing the first contact in the direction of the second contact, and the pressing means so that the first contact is separated from the second contact. A biasing means for biasing,
When the first contact and the second contact are in contact, switching to the ON state,
The control device according to any one of claims 1 to 3, wherein when the first contact and the second contact are separated from each other, switching to an off state is performed.   The control device according to claim 4, wherein the biasing means is made of an elastic body.   The control device according to claim 1, wherein the first time is a chattering removal time of the switch.   The control device according to claim 2, wherein the third time is a chattering removal time of the switch. A switch for switching between an on state and an off state;
When a first time has elapsed since detecting the switch to the on state, it is determined that the switch has been switched to the on state,
And determining means for determining that the switch has not been switched to the OFF state until a second time has elapsed since it was determined that the switch has been switched to the ON state,
The control device in which the first time is shorter than the second time . A switch for switching between an on state and an off state;
When a third time has elapsed since detection of switching to the off state by the switch, it is determined that switching to the off state by the switch has been performed,
And determining means for determining that the switch has not been switched to the ON state until a fourth time has elapsed since it was determined that the switch has been switched to the OFF state,
The control device in which the third time is shorter than the fourth time .

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