JP2016013775A - Operator determination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operator determination device which prevents erroneous determination caused by an error.SOLUTION: An operator determination device includes: a switch electrode disposed in an operation unit; seat electrodes disposed in a seat D and a seat P respectively; a signal generator which generates a predetermined signal and transmits the signal to the seat electrodes; a detection circuit which detects the signal received from the seat electrodes via a passenger by the switch electrode; and a controller which determines an operator on the basis of the signal detected by the detection circuit. If a detection value of the seat D and the seat P by the detection circuit exceeds a threshold at the same level and at the same timing a predetermined number of times, the controller determines that an erroneous connection has been carried out.

Description

  The present invention relates to an operator discrimination device that discriminates an operator of a device.

  As an operator discriminating device for discriminating an operator of a device such as a vehicle-mounted device, a technique described in Patent Document 1 has been proposed.

  In Patent Document 1, a driver (D seat) seat electrode and a passenger seat (P seat) seat electrode are connected to a signal generator capable of transmitting a high-frequency signal F via a selector switch, and these are connected via a selector switch. The high-frequency signal F is alternately output from the electrodes. Here, when the driver or passenger touches the switch electrode, the voltage level of the detection signal output to the controller rises due to the increase in capacitive coupling of the human body caused by biological communication. Therefore, the controller uses the switch state of the changeover switch and the change in the voltage level of the detection signal to determine whether the operator of the input switch at that time is a driver or a passenger.

JP-A-2005-47412

  By the way, in the operator discriminating apparatus as in Patent Document 1, when an injustice such as replacing the wiring connected to each of the D seat sheet electrode and the P seat sheet electrode is performed, the operation is performed from the driver seat. If the operation is performed from the passenger seat, it is erroneously determined.

  The present invention has been made in view of the above facts, and an object of the present invention is to provide an operator discrimination device capable of preventing erroneous discrimination due to fraud.

  In order to achieve the above-mentioned object, the invention according to claim 1 includes an operation unit electrode provided in an operation unit of a device, a plurality of seat electrodes provided in each of a plurality of seats, and the operation unit electrode. And a transmission unit that transmits a predetermined signal to one electrode of the seat electrode, and the signal received by the operation unit electrode and the other electrode of the seat electrode from the one electrode via a human body A detection unit, a determination unit that determines which seated person among the seats of the plurality of seats is an operator based on the detection result of the detection unit, and the signal detected by the detection unit is predetermined. A fraud determining unit that determines that an illegal connection has been made when the detected state is impossible.

  According to the first aspect of the present invention, the operation unit electrode is provided in the operation unit of the device, and each of the plurality of seat electrodes is provided in each of the plurality of seats.

  A signal predetermined by the transmission unit is transmitted to one of the operation unit electrode and the seat electrode. A signal received by the other electrode from one electrode via the human body is detected by the detection unit.

  The determination unit determines which of the plurality of seats is the operator based on the detection result of the detection unit.

  By the way, as described above, when a fraud such as replacing the wiring to each electrode is performed, the determination unit erroneously determines the operator.

  Therefore, the fraud determination unit determines that an illegal connection has been made when the signal detected by the detection unit represents a predetermined impossible detection state. As a result, misjudgment due to fraud can be prevented.

  The fraud determination unit may determine that an illegal connection has been made when the signal detected by the detection unit represents a detection state that is impossible for a predetermined number of times or more as in the invention described in claim 2. It may be. That is, since an impossible detection state may be detected by chance, it is possible to prevent erroneous determination by determining that the connection is unauthorized when it is detected more than a predetermined number of times.

  In addition, as an impossible detection state, as in the invention according to claim 3, the signal detected by the detection unit changes in the state where the detection value of each seat is the same level and the detection value of each seat is the same timing. The case of representing at least one of the above can be applied.

  On the other hand, the invention according to claim 4 is an operation unit electrode provided in an operation unit of a device, a plurality of seat electrodes provided in each of a plurality of seats provided in a vehicle, and the operation unit electrode. And a transmission unit that transmits a predetermined signal to one electrode of the seat electrode, and the signal received by the operation unit electrode and the other electrode of the seat electrode from the one electrode via a human body Based on the detection result of the detection unit and the detection unit, it is determined which of the plurality of seats is the operator, and whether or not each of the plurality of seats is seated is determined. A determination unit, a travel detection unit that detects whether the vehicle is traveling, and the travel detection unit detect that the vehicle is traveling, and the determination unit determines that the driver's seat is not seated. If an unauthorized connection is made And a, a fraud determination unit for determining that.

  According to the fourth aspect of the present invention, the operation portion electrode is provided in the operation portion of the device, and each of the plurality of seat electrodes is provided in each of the plurality of seats.

  A signal predetermined by the transmission unit is transmitted to one of the operation unit electrode and the seat electrode. A signal received by the other electrode from one electrode via the human body is detected by the detection unit.

  In the determination unit, it is determined which of the plurality of seats is the operator based on the detection result of the detection unit, and whether or not each of the plurality of seats is seated is determined. .

  Here, as described above, when an injustice such as replacement of the wiring to each electrode is performed, the determination unit erroneously determines the operator.

  Therefore, the fraud determination unit determines that an unauthorized connection has been made when the travel detection unit detects that the vehicle is traveling and the determination unit determines that the driver's seat is not seated. . In other words, since the driver's seat cannot be unsitting during traveling, it can be determined that an unauthorized connection has been made, thereby preventing erroneous determination due to fraud.

  Note that, as in the invention described in claim 5, the fraud determination unit is in a state in which it is detected that the vehicle is traveling by the travel detection unit, and the driver's seat is determined to be non-seated by the determination unit. You may make it discriminate | determine that the unauthorized connection was performed when it continues for the predetermined time. In other words, since it may happen that the driver's seat is not seated while traveling, it is erroneously determined by determining that the connection is invalid if it is detected continuously for a predetermined time. Can be prevented.

  Further, as in the invention described in claim 6, the discriminating unit detects a predetermined evaluation value related to energization between the operation unit electrode and the seat electrode for each seat from the signal detected by the detection unit, and detects it. Based on each evaluation value, the presence / absence of seating in a plurality of seats and the operator may be determined. Accordingly, it is possible to determine the operator and the presence / absence of seating on each seat without separately providing a seating sensor or the like.

  As described above, according to the present invention, there is an effect that it is possible to provide an operator discrimination device capable of preventing erroneous discrimination due to fraud.

It is a figure which shows schematic structure of the vehicle by which the operator discrimination device which concerns on 1st Embodiment is mounted. It is a block diagram showing a schematic structure of an operator discriminating device concerning a 1st embodiment. (A) is a figure which shows the example which connected the wiring connected to D seat electrode to P seat sheet electrode, (B) is the example which connected the wiring connected to D seat electrode and the wiring connected to P seat electrode FIG. (A) is a figure which shows the example which applies a high frequency signal to D seat sheet electrode and P seat sheet electrode alternately, (B) is a figure which shows the change of the detected value in the case of normal, (C) It is a figure which shows the change of the detected value at the time of performing unauthorized connection. It is a flowchart which shows an example of the flow of the process performed with the controller of the operator discrimination device which concerns on this Embodiment. It is a block diagram which shows schematic structure of the operator discrimination device which concerns on 2nd Embodiment. (A) is a figure for demonstrating the state discrimination | determination of each seat using D seat passage gain and P seat passage gain, (B) is a figure which shows the list of state discrimination in (A). It is a flowchart which shows an example of the flow of the process performed with the controller 32 of the operator discrimination device which concerns on 2nd Embodiment. It is a block diagram which shows schematic structure of the operator discrimination device of a modification.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)

  FIG. 1 is a diagram illustrating a schematic configuration of a vehicle on which the operator determination device according to the first embodiment is mounted. FIG. 2 is a block diagram showing a schematic configuration of the operator discrimination device according to the first embodiment.

  As shown in FIG. 1, a vehicle 50 such as a passenger car is provided with an operator discriminating device 10 that discriminates which seat in the vehicle is operated. The operator discriminating device 10 is provided, for example, in an in-vehicle device such as the car navigation device 12.

  The operator discriminating apparatus 10 discriminates an operator using a human body communication method that discriminates an operator using the human body of the occupant 14 seated on the seat as a signal communication path. In the present embodiment, it is determined which of the driver 14a seated in the driver's seat (D seat) and the passenger 14b seated in the passenger seat (P seat) is operating the car navigation device 12.

  As shown in FIG. 2, the operator discriminating apparatus 10 is provided with a plurality of seat electrodes 20 and 22 (two seats in this embodiment, D seat and P seat) embedded in each seat in the vehicle. . In the present embodiment, the electrode embedded in the driver's seat 16 is referred to as the D seat electrode 20, and the electrode embedded in the passenger seat 18 is referred to as the P seat electrode 22. The D seat electrode 20 and the P seat electrode 22 correspond to the seat electrode of the present invention. Each of the sheet electrodes 20 and 22 is, for example, an electrode made of a thin film-shaped copper foil or the like, and is disposed at a position close to a seated person seated there on each sheet.

  The operation unit 24 of the car navigation device 12 is provided with a switch electrode 26 made of various electrode materials. The switch electrode 26 corresponds to the operation unit electrode of the present invention. When the operation unit 24 has a structure composed of a normal push button, a slide switch, or the like, a copper material or the like is used as a material and is embedded in these switches. Is a touch panel type, it is embedded in the touch screen of the car navigation device 12 using a transparent electrode as a material.

  The operator discrimination device 10 includes a transmission circuit 25 as a transmission unit and a detection circuit 34 as a detection unit. The transmission circuit 25 includes a signal generator 28 and a changeover switch 30 that can output a predetermined signal (in this embodiment, a high-frequency signal F as an example) to the D seat electrode 20 and the P seat electrode 22. . The signal generator 28 is a switch that switches the signal output destination by taking the operation of continuously outputting the high frequency signal F after the ignition switch of the vehicle is operated to, for example, the ACC position or the IG on position and the operator discrimination device 10 operates. The D seat electrode 20 and the P seat electrode 22 are electrically connected to each other through the seat 30. The operator discriminating apparatus 10 according to the present embodiment performs timing discrimination in which operator discrimination is performed by repeatedly switching the output destination of the high-frequency signal F of the signal generator 28 between the D seat electrode 20 and the P seat electrode 22. An example in which discrimination is performed using an expression will be described as an example.

  The changeover switch 30 switches the position between the D seat side fixed contact 30a connected to the D seat electrode 20, the P seat side fixed contact 30b connected to the P seat electrode 22, and the fixed contacts 30a and 30b. And a movable contact 30c to be replaced. When the movable contact 30c is connected to the D seat side fixed contact 30a and the changeover switch 30 is in the first switch state (the state indicated by the solid line in FIG. 2), the signal generator 28 is electrically connected to the D seat seat electrode 20. It becomes a state. On the other hand, when the movable contact 30c is connected to the P seat side fixed contact 30b and the changeover switch 30 is in the second switch state (the state indicated by the broken line in FIG. 2), the signal generator 28 is electrically connected to the P seat seat electrode 22. It will be in a connected state.

  In addition, the operator determination device 10 is provided with a controller 32 as a determination unit for determining an operator. The controller 32 includes various devices such as a CPU, a ROM, a RAM, and a drive circuit, and an output system terminal 32 a is connected to the changeover switch 30, and an input system terminal 32 b is connected to the switch electrode 26 via the detection circuit 34. Has been. The detection circuit 34 includes an amplifier 36 that amplifies and outputs the high-frequency signal F transmitted from the switch electrode 26, and a detector 38 that detects and outputs the input signal obtained from the amplifier 36.

  The controller 32 switches the switch state of the changeover switch 30 by outputting a changeover signal S1 to the changeover switch 30. For example, the changeover switch 30 is set to the first switch state by applying the H level change signal S1 to the changeover switch 30, and the changeover switch 30 is set to the second switch state by applying the L level change signal S1 to the changeover switch 30. . Further, when the controller 32 switches the switch state of the changeover switch 30, whether the changeover switch 30 is in the first switch state or the second switch state by looking at the state of the changeover signal S1 (for example, HL level). Is supposed to recognize.

  In the operator discriminating apparatus 10 configured as described above, when an occupant seated on a seat in the vehicle operates the operation unit 24, the seat side electrode (that is, the D seat seat electrode 20 or the P seat seat) is used with the human body as a signal communication path. The electrode 22) and the switch electrode 26 are electrically connected by human body communication. For example, when the driver 14a operates the operation unit 24, the D seat sheet electrode 20 and the switch electrode 26 are electrically connected via the driver 14a. Accordingly, the high frequency signal F generated by the signal generator 28 and input to the D seat electrode 20 is detected as a detection signal S2 having a predetermined voltage level from the switch electrode 26 by human body communication via the driver 14a. Is output. The same applies when the passenger 14b operates the operation unit 24.

  That is, the controller 32 can determine whether the operation to the operation unit 24 is the driver 14a or the passenger 14b from the state of the changeover switch 30 and the detection state of the high frequency signal F.

  By the way, in the operator discriminating apparatus 10 configured as described above, if an injustice is made with respect to the wiring or the like connected to each electrode, the operation from the D seat is erroneously discriminated as the operation from the P seat. As an example of fraud, there are examples shown in FIGS. FIG. 3A shows an example in which the wiring connected to the D seat electrode 20 is connected to the P seat electrode 22. FIG. 3B shows an example in which the wiring connected to the D seat electrode 20 and the wiring connected to the P seat electrode 22 are connected.

  In the example of FIG. 3A, a signal is always applied to the switch electrode 26 from the seat electrode of the D seat, and in the example of FIG. 3B, signals from the seat electrode of the D seat and the P seat are applied to the switch electrode 26. Since these are applied, it is conceivable that the operation from the D seat is erroneously determined as the operation from the P seat.

  Therefore, in the operator determination device 10 of the present embodiment, the controller 32 is provided with an unauthorized determination function for determining whether an unauthorized connection as shown in FIGS. 3 (A) and 3 (B) is made.

  Specifically, as shown in FIG. 4A, the controller 32 switches the changeover switch 30 alternately in the order of the D seat and the P seat, and the high frequency signal F generated by the signal generator 28 is converted to the D seat electrode 20. Applied to the P seat sheet electrode 22. Here, when there is no illegal connection and it is normal, as shown in FIG. 4B, when the operation unit 24 of the car navigation apparatus 12 is not operated, a signal obtained via the switch electrode 26 is determined in advance. The threshold is exceeded when an operation is performed on the operation unit 24 of the car navigation device 12 and a state change occurs. The example of FIG. 4B shows an example in which an operation from the D seat is performed.

  On the other hand, when an unauthorized connection as shown in FIGS. 3A and 3B is performed, as shown in FIG. 4C, until the operation is performed on the operation unit 24 of the car navigation device 12. Similarly to FIG. 4B, the signal obtained via the switch electrode 26 does not exceed the threshold value. On the other hand, when the operation is performed on the operation unit 24 of the car navigation device 12 and the state changes, the threshold value is exceeded, but the detection values of the D seat and the P seat are the same level as shown in FIG. At the same time, the D seat and the P seat exceed the threshold at the same timing. Therefore, in the present embodiment, when the detection values of the D seat and the P seat exceed the threshold value at the same level and at the same timing, the controller 32 determines that the connection is invalid. Also, since it is possible to operate accidentally at the same timing from the D seat and the P seat, the detection values of the D seat and the P seat exceed the threshold at the same number of detection values at the same number of times and at the same timing. If it is determined that an illegal connection has been made. Thereby, misidentification can be prevented.

  In this embodiment, when the detection values of the D seat and the P seat exceed the threshold values at the same number of times and at the same timing, it is determined that an unauthorized connection has been made. It may be determined that an illegal connection has been made when the threshold value is exceeded at a detection value of the same level or a predetermined number of times at the same timing.

  Subsequently, specific processing performed by the controller 32 of the operator determination device 10 according to the present embodiment configured as described above will be described. FIG. 5 is a flowchart illustrating an example of a flow of processing performed by the controller 32 of the operator determination device 10 according to the present embodiment. Note that the processing in FIG. 5 starts, for example, when the ignition switch is turned on or in an ACC state, and ends when the ignition switch is turned off.

  In step 100, the controller 32 applies an H level switching signal S1 to the changeover switch 30 to change the changeover switch 30 to the D seat side, and the routine proceeds to step 102.

  In step 102, the controller 32 controls the signal generator 28 to generate a signal from the signal generator 28, and the process proceeds to step 104.

  In step 104, the signal generated by the signal generator 28 is input to the controller 32 via the detection circuit 34, so that the controller 32 detects the signal, and the process proceeds to step 106.

  In step 106, the controller 32 determines whether or not the detected signal is greater than or equal to a threshold value. If the determination is affirmative, the process proceeds to step 108, and if the determination is negative, the process proceeds to step 120.

  In step 108, the controller 32 determines whether the detected value and the change timing of the signal of the D seat detected above the threshold value are the same as those of the P seat. That is, the detection value of the P seat is detected by performing the processing described later. For example, when the state changes as shown in FIG. 4B, the detection value and the change timing are changed to the D seat as shown in FIG. The controller 32 determines whether or not the timing is the same for the seat P. If the determination is negative, the process proceeds to step 116, and if the determination is affirmative, the process proceeds to step 110.

  In step 110, the controller 32 increments the fraud determination counter and proceeds to step 112. For example, the fraud determination counter in step 110 counts the number of positive determinations in step 108 in preparation for the controller 32.

  In step 112, the controller 32 determines whether or not the count value of the fraud determination counter has reached a predetermined number of times. That is, since it is conceivable that the affirmative determination in step 108, which is an impossible detection state, is detected by chance, the controller 32 determines whether or not a predetermined predetermined number of times has been detected in order to prevent erroneous determination. If the determination is affirmative, the process proceeds to step 114, and if the determination is negative, the process proceeds to step 118. By making the determination in step 112 in this way, erroneous determination can be prevented.

  In step 114, the controller 32 determines that an illegal connection has been made and ends a series of processing. If it is determined that the connection is unauthorized, the passenger may be notified by displaying the fact.

  On the other hand, in step 116, the controller 32 clears the fraud determination counter and proceeds to step 118.

  In step 118, the controller 32 determines that the operation is from the D seat and proceeds to step 120.

  In step 120, the controller 32 applies the L level switching signal S1 to the changeover switch 30 to change the changeover switch 30 to the P seat side, and the routine proceeds to step 122.

  In step 122, the controller 32 controls the signal generator 28 to generate a signal from the signal generator 28, and the process proceeds to step 124.

  In step 124, the signal generated by the signal generator 28 is input to the controller 32 via the detection circuit 34, so that the controller 32 detects the signal, and the process proceeds to step 126.

  In step 126, the controller 32 determines whether or not the detected signal is greater than or equal to a threshold value. If the determination is affirmative, the process proceeds to step 128. If the determination is negative, the process returns to step 100 and the above-described processing is repeated.

  In step 128, the controller 32 determines whether or not the signal of the detected P seat that is equal to or greater than the threshold value is the same as the detected value and the change timing of the D seat. For example, when the state changes as shown in FIG. 4B, the controller 32 determines whether the detected value and the change timing are the same timing for the D seat and the P seat as shown in FIG. 4C. If the determination is negative, the process proceeds to step 136, and if the determination is affirmative, the process proceeds to step 130.

  In step 130, the controller 32 increments the fraud determination counter and proceeds to step 132. For example, the fraud determination counter in step 130 is provided in the controller 32 and counts the number of positive determinations in step 128.

  In step 132, the controller 32 determines whether or not the count value of the fraud determination counter has reached a predetermined number of times. That is, since it is conceivable that the affirmative determination in step 128, which is an impossible detection state, is detected by chance, the controller 32 determines whether or not a predetermined predetermined number of times has been detected in order to prevent erroneous determination. If the determination is affirmative, the process proceeds to step 134, and if the determination is negative, the process proceeds to step 138 described above. In this way, the determination at step 132 can be performed to prevent erroneous determination.

  In step 134, the controller 32 determines that an illegal connection has been made and ends the series of processing. If it is determined that the connection is unauthorized, the passenger may be notified by displaying the fact.

  On the other hand, in step 136, the controller 32 clears the fraud determination counter and proceeds to step 138.

  In step 138, the controller 32 determines that the operation is from the P seat, returns to step 100, and repeats the above processing.

  As described above, the operator determination device 10 according to the present embodiment can determine that an unauthorized connection has been made, and thus can prevent erroneous determination due to fraud.

(Second Embodiment)

  FIG. 6 is a block diagram illustrating a schematic configuration of an operator determination device according to the second embodiment. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 6, the operator determination device according to the second embodiment is different from the operator determination device 10 according to the first embodiment only in that a vehicle speed sensor 42 is provided.

  A vehicle speed sensor 42 is connected to the controller 32, and the vehicle speed detected by the vehicle speed sensor 42 is input to the controller 32. The controller 32 can detect whether or not the vehicle is traveling from the vehicle speed.

  Further, in the second embodiment, the controller 32 uses the evaluation value relating to the energization between the seat side electrode (that is, the D seat electrode 20 or the P seat electrode 22) and the switch electrode 26 in addition to the operator's discrimination. Whether or not the occupant 14 is seated in each seat is determined.

Specifically, a signal transmitted from the signal generator 28 side is E [V], and a detection signal detected by the detection circuit 34 is Vout [V]. Then, the passing gain (20 log ₁₀ (Vout / E) [dB]) between the signal generator 28 and the detection circuit 34 is used as an evaluation value, and the passing when the movable contact of the changeover switch 30 is connected to the D seat side fixed contact 30a. Using the gain (D seat pass gain) and the pass gain of both the pass gain (P seat pass gain) when connected to the P seat side fixed contact 30b, the controller 32 determines the state of each seat (presence / absence of seating and operation). Presence or absence).

  That is, there is a difference between whether or not there is a person between the switch electrode 26 and the seat electrodes 20 and 22 when the seat is not seated and when the seat is seated. The size is different. Therefore, it is possible to determine whether or not the user is seated on the seat based on the evaluation value. Further, since the distance of the person to the switch electrode 26 is different between when the operation unit 24 is seated on the seat and when the operation unit 24 is not operated while sitting on the seat, the evaluation value is large. Is different. Therefore, it can be determined whether or not the operation unit 24 is operated while sitting on the seat.

  Therefore, as shown in FIGS. 7A and 7B, the presence / absence of the occupant and the operator can be determined based on the passing gain of each seat. FIG. 7A is a diagram for explaining the state determination of each seat using the D seat passing gain and the P seat passing gain, and FIG. 7B is a list of the state determination in FIG. 7A. FIG.

  More specifically, as shown in FIG. 7A, the passing gain of each seat is divided into three, low, middle, and high. D seat passing gain is low and P seat passing gain is low as A region, D seat passing gain is low and P seat passing gain is inside B region, D seat passing gain is low and P seat currency gain is high as C region This is an area. Further, the D seat pass gain is medium and the P seat pass gain is low, the D region, the D seat pass gain is the medium, the P seat pass gain is the medium, the E region, and the D seat pass gain is medium. Let the height be the F region. Further, the G pass region has a high D seat pass gain and a low P seat pass gain as the G region, the D seat pass gain is high and the P seat pass gain is in the H region, and the D seat pass gain is high and the P seat pass gain is high. Let high be the I region.

  Each region is in the state shown in FIG. That is, in the A area, both the D seat and the P seat are not seated. In the B area, the D seat is not seated and the P seat is seated. In the area C, the D seat is not seated and the P seat is a touch operation on the operation unit 24. In the D area, the D seat is seated and the P seat is not seated. In the E area, both the D seat and the P seat are seated. In the F region, the D seat is a seat and the P seat is a touch operation to the operation unit 24. In the G area, the D seat is not seated by the touch operation on the operation unit 24 for the D seat. In the area H, the seat D is seated by the touch operation on the operation unit 24 in the seat D. In the I area, both the D seat and the P seat are touch operations to the operation unit 24.

  In the present embodiment, the information shown in FIGS. 7A and 7B is stored in the controller 32 as a state determination map, so that the presence / absence of the occupant's seating and the operator can be determined from the passing gain of each seat. To determine.

  In the example of FIG. 7, an example has been described in which the magnitude of the passing gain is the order in the case of touch operation, seating, and non-sitting (“touch> sitting> non-sitting”). This is not necessarily the order. For example, when the design is such that the current that flows to the GND (vehicle body) via the human body is larger than the current that flows to the operation unit 24 when sitting, such as when the electrode size is small, “touch> non-sitting> sitting” It becomes.

  Next, specific processing performed by the controller 32 of the operator determination device according to the second embodiment configured as described above will be described. FIG. 8 is a flowchart illustrating an example of a flow of processing performed by the controller 32 of the operator determination device according to the second embodiment. Note that the processing in FIG. 8 starts, for example, when the ignition switch is turned on or in an ACC state, and ends when the ignition switch is turned off.

  In step 200, the controller 32 applies an H level switching signal S1 to the changeover switch 30 to change the changeover switch 30 to the D seat side, and the process proceeds to step 202.

  In step 202, the controller 32 controls the signal generator 28 to generate a signal from the signal generator 28, and the process proceeds to step 204.

  In step 204, the controller detects the D seat passing gain and proceeds to step 206. That is, the controller 32 obtains the D-seat passing gain as an evaluation value from the signal transmitted from the signal generator 28 and the detection signal detected by the detection circuit 34.

  In Step 206, the controller 32 applies the L level switching signal S1 to the changeover switch 30 to change the changeover switch 30 to the P seat side, and the process proceeds to Step 208.

  In step 208, the controller 32 controls the signal generator 28 to generate a signal from the signal generator 28, and the process proceeds to step 210.

  In step 210, the controller detects the P seat passing gain and proceeds to step 212. That is, the controller 32 obtains the P seat passing gain as an evaluation value from the signal transmitted from the signal generator 28 and the detection signal detected by the detection circuit 34.

  In step 212, the controller 32 determines the operator and seating based on the state determination map, and the process proceeds to step 214. That is, the controller 32 determines the area of FIG. 7A corresponding to the detected passage gain of the D seat and the P seat, and reads the corresponding state from FIG. To determine.

  In step 214, the controller 32 detects the vehicle speed by acquiring the detection result of the vehicle speed sensor 42, and proceeds to step 216.

  In step 216, it is determined whether or not the controller 32 is traveling and the D seat is in a non-sitting state. That is, it is determined whether or not the vehicle is traveling from the vehicle speed detected in step 214, and it is determined from the determination result in step 212 whether the D seat is in the non-sitting state. If the determination is affirmative, the process proceeds to step 218. If the determination is negative, the process returns to step 200 and the above-described processing is repeated.

  In step 218, the controller 32 determines whether or not the state of traveling and the non-sitting state of the D seat is continuously detected for a predetermined time. That is, since it is conceivable that the state of traveling and the non-seating D seat is detected by chance, the controller 32 determines whether or not it has been detected continuously for a predetermined time to prevent erroneous determination. If the determination is affirmative, the process proceeds to step 220. If the determination is negative, the process returns to step 200 and the above-described processing is repeated.

  In step 220, the controller 32 determines that an illegal connection has been made and ends the series of processing. That is, since it is impossible for the seat D to be in a non-sitting state during traveling, it is determined that an unauthorized connection has been made. If it is determined that the connection is unauthorized, the passenger may be notified by displaying the fact.

  As described above, also in the operator determination device according to the present embodiment, since it is possible to determine that an unauthorized connection has been made, it is possible to prevent erroneous determination due to fraud.

  In the first and second embodiments described above, the configuration of transmitting the high-frequency signal F to each seat by changing the timing (configuration example of timing identification formula) has been described, but the present invention is not limited to this. For example, you may make it employ | adopt the structure which inputs the signal from which a frequency differs into each seat using two transmission circuits. Below, the example provided with two transmission circuits as a modification is demonstrated.

  Here, a modified example of the operator determination device will be described. FIG. 9 is a block diagram illustrating a schematic configuration of an operator identification device according to a modification. In addition, since it is the same structure about a basic part, the same part attaches | subjects the same code | symbol and abbreviate | omits description and demonstrates only a different part. In the following, a modification of the first embodiment will be described. However, a vehicle speed sensor 42 may be further provided in order to obtain a modification of the second embodiment.

  As shown in FIG. 9, the transmission circuit 25 of the operator discrimination device 10 is provided with an individual signal generator 28 for each of the sheet electrodes 20 and 22. In the modification, the first signal generator 28a is connected to the D seat electrode 20 and the second signal generator 28b is connected to the P seat electrode 6. These signal generators 28a and 28b transmit high-frequency signals F1 and F2 having different frequencies, respectively. In a modification, the first signal generator 28a supplies the first high-frequency signal F1 to the D seat electrode 20, and the second The signal generator 28b supplies the second high frequency signal F2 to the P seat seat electrode 22.

  The detection circuit 34 is provided with band-pass filters 40a and 40b that pass signals only in a predetermined frequency band in accordance with the number of sheet electrodes 20 and 22 (two modifications). In the modified example, the first high-frequency signal F1 output from the first signal generator 28a can be passed through the first band-pass filter 40a, and the second high-frequency signal F2 output from the second signal generator 28b can pass through. Is a second bandpass filter 40b. When the D seat electrode 20 and the switch electrode 26 are coupled to the human body, the detection circuit 34 receives the first high-frequency signal F1, which passes through the first band-pass filter 40a and passes through the amplifier 36 and the detector 38. It is output to the controller 32 as a D seat touch detection signal. When the P seat electrode 22 and the switch electrode 26 are coupled to the human body, the detection circuit 34 receives the second high frequency signal F2, which passes through the second band pass filter 40b and passes through the amplifier 36 and the detector 38. This is output to the controller 32 as a P seat touch detection signal.

  Even with this configuration, it is possible to determine an unauthorized connection by performing the same processing as in the first and second embodiments.

  In the second embodiment, an example in which a pass gain is applied as an evaluation value is described. However, the present invention is not limited to this, and various evaluation values may be applied. For example, a current value, a voltage value, or the like may be applied.

  In the second embodiment, the evaluation value is used to determine whether or not the operator is seated in addition to the operator. However, as in the first embodiment, the operator is determined and the seating state is determined. The presence or absence may be determined by providing a separate seating sensor.

  Further, in each of the above-described embodiments and modifications, an example in which a signal is transmitted to the sheet electrodes 20 and 22 and a signal is received from the switch electrode 26 has been described. A signal may be received from 22.

  In each of the above-described embodiments and modified examples, the example in which the driver 14a and the passenger 14b are discriminated as the operator discriminating target has been described. However, the present invention is not limited to the two. For example, an electrode may be provided on the rear seat, and three or more of the driver 14a, the passenger 14b, and the rear seat occupant may be applied.

  Moreover, in each said embodiment and modification, although the car navigation apparatus 12 was mentioned as an example as vehicle equipment, it is not necessarily limited to the car navigation apparatus 12. For example, you may make it apply other apparatuses, such as an air conditioner apparatus and an audio apparatus which exist in a center cluster.

  Moreover, the material of the electrodes 20, 22, and 26 in each of the above embodiments and modifications is not necessarily limited to copper foil. For example, indinium tin oxide, tin oxide, zinc, or the like may be applied.

  Further, in each of the above-described embodiments and modifications, the mounting target of the operator determination device 10 is not necessarily limited to the vehicle 50. That is, the adoption target is not particularly limited as long as it is a device or apparatus that requires the presence / absence of seating or the operator's discrimination.

DESCRIPTION OF SYMBOLS 10 Operator discriminating device 12 Car navigation system 14 Crew | occupant 16 Driver's seat 18 Passenger seat 20 Passenger seat electrode 22 Seat D seat electrode 22 Seat P electrode 24 Operation part 26 Switch electrode 28 Signal generator 30 Changeover switch 32 Controller 34 Detection circuit

Claims (6)

An operation unit electrode provided in the operation unit of the device;
A plurality of seat electrodes each provided in each of the plurality of seats;
A transmission unit that transmits a predetermined signal to one of the operation unit electrode and the seat electrode;
A detection unit for detecting the signal received by the other electrode of the operation unit electrode and the seat electrode via the human body from the one electrode;
A discriminating unit for discriminating which seated person is an operator among seated persons of a plurality of seats based on the detection result of the detecting unit;
An unauthorized determination unit that determines that an unauthorized connection has been made when the signal detected by the detection unit represents a predetermined impossible detection state;
An operator discriminating device comprising:   The operator discrimination device according to claim 1, wherein the fraud determination unit determines that an illegal connection is made when the signal detected by the detection unit represents the impossible detection state more than a predetermined number of times. .   2. The impossible detection state is a case where the signal detected by the detection unit represents at least one of a state change at the same level and a detection value of each seat at the same level. Or the operator discrimination | determination apparatus of Claim 2. An operation unit electrode provided in the operation unit of the device;
A plurality of seat electrodes each provided in each of a plurality of seats provided in the vehicle;
A transmission unit that transmits a predetermined signal to one of the operation unit electrode and the seat electrode;
A detection unit for detecting the signal received by the other electrode of the operation unit electrode and the seat electrode via the human body from the one electrode;
A determination unit that determines which seated person is an operator among seated persons of a plurality of seats based on the detection result of the detection unit, and determines whether or not each seated person is seated on each of the plurality of seats;
A travel detection unit that detects whether the vehicle is traveling;
An unauthorized determination unit that determines that an unauthorized connection has been made when the traveling detection unit detects that the vehicle is traveling and the determination unit determines that the driver's seat is not seated;
An operator discriminating device comprising:   The fraud determination unit determines that the fraud determination unit detects that the vehicle is traveling and the determination unit determines that the driver's seat is not seated for a predetermined time. The operator discriminating apparatus according to claim 4, wherein the operator discriminating that a proper connection is made.   The determination unit detects a predetermined evaluation value related to energization between the operation unit electrode and the seat electrode for each seat from the signal detected by the detection unit, and based on each detected evaluation value The operator discriminating device according to claim 4 or 5, wherein the operator discriminating whether or not the user is seated on a plurality of seats and the operator are discriminated.

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