JP5145154B2 - CO2 emission calculation system using wireless authentication - Google Patents

Description

The present invention relates to a CO ₂ emission calculation system using wireless authentication.

In recent years, with the expansion of environmental pollution due to CO ₂ emissions, global warming has progressed, and therefore CO ₂ reduction has become a challenge on a global scale. Therefore, such CO ₂ reduction is a problem imposed on individuals. For that purpose, it is important to know how much CO ₂ is being emitted by an individual at present.

And the current use of electrical appliances and cars is a major cause of CO ₂ emissions, but individuals are not aware that they are emitting CO ₂ with their use. Few.

There exists invention of patent document 1 as a prior art example. A security system having a function of bidirectionally transmitting and receiving data between a remote control device and a security body is disclosed. The invention described in Patent Document 2 follows that the in-house temperature can be lowered, the air conditioning efficiency can be improved, the fuel consumption can be reduced, and the CO ₂ can be reduced by maximizing the spectral reflectance as a coating system in consideration of the color and hue. The design is disclosed.
Japanese Patent Laid-Open No. 10-147212 JP 2005-307008 A

Until now, there has been no system that measures the rate of use of electrical products or cars in association with the causes of CO ₂ emissions as described above.

Accordingly, the present invention is to provide a system capable of measuring the usage rate of CO ₂ emission sources such as electric appliances and cars and allowing an individual to understand the amount of CO ₂ emitted from the individual. .

The first aspect of the CO ₂ emission calculation system according to the present invention that achieves the above object is the first wireless means and the second wireless means for performing use restriction and restriction release of the controlled device that generates CO _2. And when the distance between the first wireless means and the second wireless means is within a predetermined distance, the second wireless means releases the use restriction of the controlled device, and the first wireless means The wireless means counts the operating time when the use restriction of the controlled device is released, and based on the counted operating time and the amount of CO ₂ generated per unit time of the controlled device. It is characterized by calculating the CO ₂ emission amount of the control device.

Further, the second aspect of the CO ₂ emission calculation system according to the present invention that achieves the above-described object is a first aspect that performs use restriction and use restriction release of a plurality of first wireless means and controlled devices that generate CO ₂ . Each of the plurality of first wireless means exchanges an authentication code with the second wireless means when the distance from the second wireless means is within a predetermined distance. Then, a pairing link is formed, and when the pairing link is formed, the second wireless unit releases the use restriction of the controlled device, and the use restriction of the controlled device is released. And calculating the CO ₂ emission amount of the controlled device based on the counted operating time and the CO ₂ generation amount per unit time of the controlled device, For each of the first radio means Then, the calculated CO ₂ emission amount is apportioned with respect to the time during which the pairing link is formed, and the corresponding first wireless means is notified.

Since the function of the first wireless means having the above characteristics is mounted on a cellular phone or the like, it is possible for an individual to easily recognize the CO ₂ emission amount due to the use of the device, so that the application of the present invention can contribute widely to environmental measures. .

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

  FIG. 1 is a diagram for explaining the outline of the system of the present invention.

In FIG. 1, an automobile 1 and a lighting fixture 2 are taken as examples of CO ₂ generation sources. Further, assume that a person A drives the automobile 1 and returns home and turns on the lighting device 2 when entering the house. At this time, CO ₂ is generated by driving the automobile 1 and further by lighting the lighting fixture 2.

Furthermore, the amount of CO ₂ generated varies depending on the equipment. That is, the amount of CO ₂ generated per unit time differs between the automobile 1 and the lighting fixture 2, and the cumulative amount of CO ₂ changes according to the operation time and lighting time.

  In FIG. 1, the system according to the present invention uses a remote control 3 that forms a link with a controlled device. The remote controller 3 (hereinafter referred to as “my remote controller”) is preferably in a form that can be easily carried by an individual. For example, a function required for the my remote controller can be mounted on a mobile phone in a mobile radio communication system. Alternatively, in the application of the present invention such as a music player, PDA, etc., the form of my remote controller is not limited.

  As a feature, when the remote controller 3 as the first wireless means approaches within a predetermined distance between the remote controller 3 as the second wireless means mounted on the automobile 1 or the lighting fixture 2 in the example of FIG. Then, a pairing link is established so that they can authenticate each other.

  FIG. 2 is a diagram for explaining the formation of the pairing link, taking the lighting fixture 2 as an example. As shown to (A), the cancellation | release unit 20 is mounted in the lighting fixture 2. As shown in FIG. The release unit 20 has a function of controlling setting / release of the pairing link with the remote controller 3.

  In FIG. 2B, when the distance D between the my remote controller 3 and the lighting fixture 2 approaches within a predetermined authenticable distance D1, a link is formed between the remote control 3 and the lighting fixture 2. On the other hand, in FIG. 2C, the link between the luminaire 2 and the remote controller 3 is released when the distance is farther than the authentication distance D1.

  The remote control 3 has a timer function. A link is formed when the distance between the remote controller 3 and the lighting fixture 2 is (D ≦ D1), the lighting fixture 2 is turned on, and the my remote control 3 counts a timer during that period. Thereby, my remote control 3 can count the time when the lighting fixture 2 is lit.

FIG. 3 is a block diagram of a configuration example of the my remote controller 3 to which the present invention is applied and the release unit 20 provided in the CO ₂ discharge device such as the car 1 and the lighting fixture 2 as controlled devices.

  The my remote control 3 includes a function calculation circuit 30, a transmission / reception circuit 31, a display unit 32, and a transmission / reception antenna 33. On the other hand, the release unit 20 mounted on the controlled device such as the car 1 or the lighting fixture 2 has a function calculation circuit 21, a transmission / reception circuit 22, and a transmission / reception antenna 23.

[Pairing function]
The my remote control 3 and the release unit 20 having the above configuration have the same pairing function as disclosed in the prior application No. 2007-107354.

  When the pairing function units 301 and 201 of the function arithmetic circuits 30 and 20 of the my remote control 3 and the release unit 20 are paired for the first time without giving an ID in advance between the remote control 3 and the release unit 20 An ID is issued to each other, and the ID is registered in each of the storage devices 302 and 202, whereby an authentication relationship is established only with the corresponding partner.

  Furthermore, the function calculation circuits 30 and 20 of the remote controller 3 and the release unit 20 have pairing switches (SW) 303 and 203, respectively. The my remote controller 3 includes a random number generation unit 304 and a decryption unit 305.

  On the other hand, the cancellation unit 20 includes an encryption unit 204.

  FIG. 4 is a sequence diagram for explaining an example of pairing operation between my remote controller 3 and release unit 20. In the description of FIG. 4, for simplification, the my remote controller 3 and the release unit 20 will be described as a unit A and a unit B, respectively.

  Pairing means that unit A and unit B can authenticate each other as mentioned above.

  In FIG. 4, first, unit A and unit B are brought close to each other (step S10).

  Next, the pairing switch 303 of unit A is turned on (step S11), and the pairing switch 203 of unit B is also turned on (step S12).

  Unit A determines whether or not pairing has already been made between units A and B (S13). For example, when the ID memory 302 is accessed and the IDs of the units A and B (specifically, the pairing request signal Preq and the pairing acceptance signal Pack) are stored in the memory 302, it is determined that the pairing is performed. If not, it is determined that it is not paired. If paired, this sequence does not need to be executed, and the process ends.

  If not paired (step S13, NO), a call signal CA is generated from unit A to unit B (step S14). On the other hand, the unit B receives the calling signal CA by the transmitting / receiving antenna 23 and sends it to the receiver 220 of the transmission / reception circuit 22 (step S15).

  Unit B determines whether or not pairing function unit 201 has already paired unit A (step S16).

  If not paired (step S16, NO), a response signal RS is transmitted from the transmitter 221 (step S17).

  FIG. 5 is an example of a signal format between the unit A and the unit B, and FIGS. 5A and 5B are examples of format configurations of the call signal CA and the response signal RS. The call signal CA is transmitted together with the synchronization bit and the header, and the response signal RS is also transmitted together with the synchronization bit and the header.

  Returning to FIG. 4, when the unit A receives the response signal RS from the unit B, the pairing function unit 301 determines that pairing with the unit B is necessary. Then, the random number generator 304 generates an authentication code IDmy, which is an N-bit random number (step S18), holds this in the ID memory 302, and transmits it from the transmitter 310 as a pairing request signal Preq. (Step S19).

  Unit B receives the pairing request signal Preq (= IDmy) (step S20). Next, the encryption unit 204 encrypts the pairing request signal Preq using the encryption function g (step S21). For example, when the receiver 220 receives the pairing request signal Preq, the receiver 220 outputs it to the encryption unit 204, and the encryption unit 204 performs encryption as follows using the encryption function g.

Encrypted signal Pack = g (Preq)
The unit B outputs the encrypted signal to the transmitter 220, and returns it to the unit A as a pairing acceptance signal Pack from the transmitter 220 (step S22).

  FIGS. 5C and 5D are diagrams showing examples of formats of signals Preq and Pack transmitted between the units A and B during pairing.

  The pairing request signal Preq is transmitted together with the synchronization bit and the header, and the pairing acceptance signal Pack is also transmitted together with the synchronization bit and the header.

Returning to FIG. 4, when the unit A receives the pairing acceptance signal Pack (step S23), the decoding lower part 305 uses the decoding function g- ¹ to decode the pairing acceptance signal Pack as follows (step S24). ).

Decoded signal Preq = g ⁻¹ (Pack)
Then, the unit A confirms that the decoding result matches the pairing request signal Preq (S25). This is for confirming that the units A and B are regular pairing partners using the same encryption function g.

  For example, when the receiver 311 receives the pairing acceptance signal Pack, the decryption unit 305 performs decryption corresponding to the encryption, and the pairing function unit 301 determines whether or not it matches the pairing request signal Pack. Is called.

  If they do not match (step S25, NO), the process ends because the party is not a regular pairing partner.

  If they match (step S25, YES), unit A transmits a pairing confirmation signal Pok (S26). For example, when the pairing function unit 301 confirms that the signal decoded by the decoding unit 305 matches the pairing request signal Preq, a notification to that effect is sent to the transmitter 310, and the pairing confirmation is performed by the transmitter 310. A signal Pok is generated and radiated and output from the antenna 33.

  In the sequence flow of FIG. 4 described above, if authentication starts within a certain distance (D ≦ D1), a radio wave including IDmy periodically emitted from the unit A under the control of the wireless authentication function unit 306 is transmitted on the unit B side. It may be received and authentication may be started under the control of the wireless authentication function unit 205. Alternatively, the authentication may be started by transmitting IDmy to the unit B side by pressing the authentication start switch 307 of the unit A after entering within a certain distance. In such a case, since the battery of the unit A can be saved, a more energy saving effect can be obtained.

[CO ₂ emission calculation function]
FIG. 6 is a diagram showing a flow of an authentication operation and a CO ₂ reduction calculation function to which the present invention is applied based on the basic authentication sequence shown in FIG. Also in the following description, for the sake of simplicity, each of the remote controller 3 and the release unit 20 mounted on the controlled device will be described as units A and B.

  In the basic authentication sequence shown in FIG. 4, mutual authentication is performed by encrypting the IDs of both units A and B. In the example shown in FIG. 6, the authentication start switch 307 is pressed to start authentication. Start with that. That is, IDmy and IDky, which are IDs, are directly transmitted from the my remote control 3 (unit A) side and the release unit 20 (unit B) side, and are mutually confirmed and authenticated.

  That is, in FIG. 6, in the initial state (steps S100A and 100B), in unit A, the authentication start switch 307 is pressed (step S101). As a result, the authentication start switch 307 reads the authentication code IDmy on the unit A side from the ID memory 302 and sends a transmission command to the transmitter 310 (step S102).

  On the other hand, the unit B side is in a use restriction signal sending state in the initial state (step S100B), the controlled device such as the lighting fixture 2 is in a light-off state, and is waiting to receive the authentication code IDmy from the unit A (step S100B). S103).

  When the authentication code IDmy is received from the unit A, the unit B accesses the ID memory 202 and determines whether IDmy is registered (step S104). If not registered, the process is terminated and the initial state is restored (No in step S104).

  The unit A transmits the self-authentication code IDmy, and there is a reply (IDky) from the unit B side (step S105, Yes). If the authentication IDky is from the unit B paired in advance (step S106, Yes), the use of the controlled device is canceled.

Therefore, the lighting fixture 2 that is the controlled device is turned on. Then, the calculation of the CO ₂ emission amount from that time is started (step S107).

In the process of calculating the CO ₂ emission amount, the unit A operates so as to continue the processing from step S102 at a predetermined time interval (for example, every 10 seconds) by the constant time counter A in the pairing function portion 301 (step S102). S108), the self-authentication code IDmy is transmitted (step S102), and the authentication code IDky is received from the unit B (step S105).

If the remote control unit 3 as the unit A moves away from the release unit 20 as the unit B by a certain distance D1 or more, the reception of the authentication code IDky from the unit B is interrupted, so an alarm is issued (step S109). And terminates the calculation of the CO ₂ emission amount and displays the result. The alarm stops after a certain time and returns to the initial state (step S110).

  On the other hand, in the initial state (step S100B), the unit B side which is the release unit 20 is in a use restriction signal transmission state, and controlled devices such as the lighting fixture 2 are in a light-off state.

  The receiver 220 in the cancellation unit 20 is in a standby reception state, and is in a standby state for receiving the authentication code IDmy from the my remote controller 3 (step S103).

  When the authentication code IDmy is received, it is checked whether or not it is the IDmy registered in the ID memory 202, that is, the authentication code of the paired my remote controller 3 (step S104). If the authentication code is not registered, it is ignored and the process returns to the initial state (No in step S104).

If it is the registered authentication code IDmy, IDky which is a self-authentication code is returned (step S104A). At the same time, the use restriction release signal generated by the use restriction release function 206 is sent to the luminaire 2 as the controlled device by the data communication function unit 207 with the controlled device to turn on the power lamp (step S111). Further, the calculation of the CO ₂ emission amount is started (step S112).

Thereafter, a timer is counted for a certain time (for example, about 20 seconds, about twice the repetition time on the side of the my remote controller 3) (step S113). If the next authentication code IDmy cannot be received from the unit A side during the timer counting period (step S114, No), it is determined that the my remote controller 3 has moved away, and the process returns to the initial state (step S100B) to send a use restriction signal. Then turn off the lamp and stop the CO ₂ emission calculation at the same time.

Here, the CO ₂ emission calculation (steps S107 and S112) is performed by adding up the time that the my remote control 3 and the release unit 20 mutually authenticate, and multiplying this by the CO ₂ emission per unit time. It can be calculated.

For example, CO ₂ emissions COlight of the lamp is, aa kg-CO ₂ per power kWh (= 0.555, the value of 2006/3 time), wattage B of the lamp, if the operating time H COlight = aa × B × H ( kg-CO ₂ ) (Formula 1)
Can be calculated with

  The usage time H is a time during which the my remote control 3 and the release unit 20 are authenticated.

Also, car CO ₂ emissions COcar is gasoline 1 CO ₂ emissions per liter _{bb kg-CO 2 (= 2.3kg} -CO 2), the travel distance L, and the fuel efficiency cc km / litter COcar = bb × L ÷ cc (kg-CO ₂ ) (Formula 2)
Can be calculated with

  The mileage L and the fuel efficiency cc of the automobile need to be received from the automobile 1 as a controlled device, and the data needs to be transmitted from the release unit 20 to the my remote controller 3. For this reason, the release unit 20 requires the controlled device data communication function unit 207.

Next, a formula for calculating the CO ₂ emission amount of each person when a plurality of persons use one controlled apparatus (for example, the lighting apparatus 2) will be described.

  As shown in FIG. 7, it is assumed that three persons A, B, and C enter a room at different times and exit at different times.

  Each entry / exit time is described in units of time for simplicity. These entry / exit times can be known when the release unit 20 of the controlled device and each of the my remote controllers 3 perform wireless authentication, thereby authenticating both.

In addition, since the CO ₂ emission calculation function unit 208 on the controlled device side can know the authentication time of each person, the time zone in which a plurality of people are simultaneously authenticating with the controlled device is controlled by the controlled device. The information is transmitted to the my remote control 3 so that the CO ₂ emission amount of the device is appropriately distributed.

  FIG. 8 illustrates the time during which three persons A, B, and C authenticate with one controlled device (lighting device 2) and the proportion of proportion when they overlap. Since this proportion can be known on the controlled device side, it is necessary to communicate the result to each of the three remote controllers 3 of the three persons.

  A specific calculation method will be described below.

The time when Mr. A authenticates with the controlled device is hh1 (9:00). Assume that Mr. B enters the room at time hh2 (10:00) while Mr. A is in the room. At this time, hh2 data and prorated ratio DIV1 = 1 are sent from the controlled device to Mr. A's My Remote 3 so that Mr. A's CO ₂ emissions from 9:00 to 10:00 are as follows: Calculated.

CO ₂ (1) = aa × B × (hh2-hh1) × DIV1 (Formula 3)
Next, assuming that the time when Mr. C enters the room is hh3 (11:00), the proration rate DIV2 up to this time is DIV2 = 1/2 because there are two persons, Mr. A and Mr. B. This data and the time hh3 are transmitted from the controlled device to Mr. A's my remote controller 3. At this time, Mr. A's CO ₂ emissions CO ₂ (2) from 10:00 to 11:00 is CO ₂ (2) = aa x B x (hh3-hh2) x DIV2 (Formula 4)
It becomes.

If such a process is repeated, the total amount CO ₂ subtotal of Mr. A's CO ₂ emissions is as shown in FIG.
CO ₂ subtotal = CO ₂ (1) + CO ₂ (2) + …… + CO ₂ (7) (Formula 5)
Can be expressed as

Similarly, CO ₂ emissions can be calculated for Mr. B and Mr. C.
If these are expressed by a general formula, CO ₂ subtotal = aa × B × Σ ((hh (i + 1) -hh (i)) × DIV (i)) (Formula 6)
It becomes. Here, the proration rate between time hh (i) and hh (i + 1) is DIV (i).

[Display section and display section control function]
It is important to make the user aware of CO ₂ reduction by displaying the calculation result of the CO ₂ emission amount and the like. Therefore, on the unit A side, that is, on the my remote controller 3, a display unit 32 for displaying the calculation result of the CO ₂ emission amount and a display unit control function unit 309 for selecting what to display on the display unit 32 are provided. Have. A display example of the display unit 32 is shown in FIG.

In the display example of FIG. 9, the difference between the CO ₂ emission amount of the day and yesterday is displayed. As a result, at least the user can recognize that he / she is trying to reduce CO ₂ emissions. Further, as another embodiment, the data center is remote from the controlled device or in the vicinity of the controlled device. It comprises so that it may be provided.

Then, the data center is notified of the CO ₂ emission amount calculated as described above. Thereby, it is possible to collect and manage the CO ₂ emission amount for each controlled device in the data center.

It is a figure explaining the outline of the system of the present invention. It is a figure explaining formation of a pairing link for a lighting fixture as an example. And My remote control to which the present invention is applied, a structural block diagram of the release unit provided in the CO ₂ emission devices of the car and luminaires such as the controlled device. It is a sequence diagram explaining the example of a pairing operation | movement between my remote control and the cancellation | release unit. It is an example of a signal format between unit A and unit B. Based on the underlying authentication sequence shown in FIG. 5 is a diagram showing a flow of an authentication operation and CO ₂ reduction calculation function to apply the present invention. It is a diagram illustrating each person CO ₂ emissions calculation formula in the case where a plurality of people are using one of the controlled device. The time when three persons of A, B, and C authenticate with one controlled apparatus (lighting fixture 2), and the proportion ratio when overlapping are illustrated. It is a figure which shows the example of a display of a display part.

Explanation of symbols

1, 2 Controlled device 3 My remote control 20 Release unit 21, 30 Function calculation circuit 31, 22 Transmission / reception circuit 33, 23 Display unit

Claims (5)

A first wireless means;
A _second wireless means for restricting use of the controlled device that generates CO ₂ and releasing the use restriction;
When the distance between the first wireless means and the second wireless means is within a predetermined distance, the use restriction of the controlled device is canceled by the second wireless means,
The first wireless means counts the operation time when the use restriction of the controlled device is released, and based on the counted operation time and the CO ₂ generation amount per unit time of the controlled device. Calculating the CO ₂ emission of the controlled device,
A CO ₂ emission calculation system using wireless authentication characterized by the above. In claim 1,
A CO ₂ emission calculation system using wireless authentication, wherein the first wireless means and the second wireless means mutually exchange authentication codes to form a pairing link. In claim 1,
Said first radio means, a display means, stores the CO ₂ emissions the calculated in the storage unit, and CO ₂ emissions stored in the storage means and the newly calculated CO ₂ emissions The CO ₂ emission amount calculation system is characterized in that the difference between the _two is displayed on the display means. A plurality of first wireless means;
A _second wireless means for restricting use of the controlled device that generates CO ₂ and releasing the use restriction;
Each of the plurality of first wireless means forms a pairing link by exchanging an authentication code with the second wireless means when the distance from the second wireless means is within a predetermined distance. And
When the pairing link is formed, the second wireless means releases the use restriction of the controlled device, counts the operation time when the use restriction of the controlled device is released, and Calculated CO ₂ emission amount of the controlled device based on the operation time to be performed and the CO ₂ generation amount per unit time of the controlled device, and for each of the plurality of first wireless means, Apportioning the calculated CO ₂ emission amount to the time when the pairing link is formed and notifying the corresponding first wireless means;
CO ₂ emission calculation system characterized by this. In claim 1 or 4,
In addition, it has a data center,
By notifying the CO ₂ emissions is the calculated to the center apparatus from the first wireless device or the second radio unit, characterized in that the integrated CO ₂ emissions of the controlled device by the data center CO ₂ emission calculation system.