WO2015098429A1

WO2015098429A1 - Air compressor and authentication method therefor

Info

Publication number: WO2015098429A1
Application number: PCT/JP2014/081613
Authority: WO
Inventors: 西河　智雅; 伊藤　達也; 高野　信宏; 拓哉根内
Original assignee: 日立工機株式会社
Priority date: 2013-12-27
Filing date: 2014-11-28
Publication date: 2015-07-02
Also published as: JPWO2015098429A1; JP6146485B2

Abstract

The present invention improves the security of an air compressor. This air compressor has a motor (16) to be driven by electric power supplied from a power source, a compressed-air generation unit for generating compressed air when the motor (16) is driven, a tank for storing the compressed air generated by the compressed-air generation unit, and an operation panel (37) for giving instructions to activate/stop the motor (16) and to switch a driving mode of the motor (16). Furthermore, the air compressor has a control board (32) for controlling the driving of the motor (16) in accordance with an operation signal from the operation panel (37) and for controlling the air-compression operation by the compressed-air generation unit, a read unit (39a) for reading authentication information, and an information control board (39) for performing authentication on the basis of the authentication information read by the read unit (39a), and the air compressor is structured such that the information control board (39) and the operation panel (37) are separately disposed from each other.

Description

Air compressor and authentication method thereof

The present invention relates to an air compressor that operates by driving a motor and an authentication method thereof.

A portable type is known as an air compressor (compressor) used for a power tool or the like. Portable air compressors are often used by being brought into construction sites and the like. *

However, although it is portable, it is relatively heavy and air compressors that are placed in places where a power source with sufficient current capacity is secured are often placed in places where workers cannot easily reach them. In construction sites, etc., it may be left on the site after breaks such as lunch breaks or daytime construction, resulting in theft. For example, in the air compressors disclosed below, security There is a need for improved functionality. *

In addition, as an air compressor provided with the compressed air production | generation part driven with a motor, it describes in patent document 1, for example.

Japanese Patent No. 40099949

The inventor of the present application provides security for an air compressor in which an operation panel (operation board, operation unit) including a plurality of operation buttons (switches) for starting / stopping the motor is exposed from the cover of the compressor body. Was examined. *

Such an air compressor usually has an operation board as a base of an operation panel for performing an operation, and an IC (Integrated Circuit) chip (hereinafter referred to as an information control chip) in which security information is stored on the operation board. It is easy to think of a structure equipped with (also called). The security information here is a code for collating two members. For example, it is a management number assigned to the chip, security information for authentication (for example, a numeric code or European text), etc. is there.

However, although a plurality of operation buttons are attached to the operation panel described above, the operation buttons are broken or damaged because the operator frequently presses the operation buttons. When an operation button breaks down, not only replacement of the operation button but also replacement as a replenishment part for each operation panel (for each operation board) is generally performed. *

At this time, when the information control chip is mounted on the operation board, it has been found that the security information of the air compressor is also changed with the replacement of the operation panel. Furthermore, there is a problem that a security key (for example, a card or the like) corresponding to the information control chip for releasing security must be exchanged. *

In the case of such an air compressor, when an operation panel (operation board) is purchased as a supplemental part, a security key is also attached. And since the security function is completed with the operation panel (operation board) on which the information control chip is mounted and the security key, if the operation panel is replaced with a new operation panel by stealing the main body, there will be no security function. Does not work effectively and the air compressor can be operated. *

The present invention has been made to solve the above-described problems, and provides an air compressor with improved security and an authentication method thereof.

An air compressor according to an embodiment includes a motor, a compressed air generation unit that generates compressed air by driving the motor, a tank that stores the compressed air, start / stop of the motor, and a drive mode of the motor An operation unit that outputs an operation signal, a control unit that controls driving of the motor and air compression operation in the compressed air generation unit, a reading unit that reads authentication information, An authentication unit provided with an authentication member that performs authentication based on the authentication information read by the reading unit, and the operation member and the authentication member are provided on independent substrates. is there. *

The authentication method for an air compressor according to an embodiment reads the identification information of the control unit stored in the storage unit of the authentication unit into an external storage medium, and reads the identification information using the storage medium. Is stored in a storage unit of another authentication unit, and authentication is performed by the control unit and the other authentication unit.

According to the present invention, the security of the air compressor can be improved.

It is a perspective view which shows an example of the structure of the air compressor of Embodiment 1 of this invention. It is sectional drawing which shows an example of the structure by the side of the plane of the air compressor shown in FIG. It is a top view which fractures | ruptures and shows a part of air compressor shown in FIG. It is a side view which shows an example of the structure of the state which removed the cover of the air compressor shown in FIG. It is a block diagram which shows an example of the control system of the air compressor shown in FIG. It is a top view which shows an example of the structure of the reading part of the air compressor shown in FIG. It is a front view which shows an example of the structure of the operation board of the air compressor shown in FIG. It is a conceptual diagram which shows an example of the connection state of a structure of the security system principal part of the air compressor shown in FIG. It is a block diagram which shows the structure of FIG. It is a conceptual diagram which shows an example of the connection state of the structure of the security system principal part of the air compressor of Embodiment 2 of this invention. It is a block diagram which shows the structure of FIG. It is a conceptual diagram which shows the connection state of the structure of the security system principal part of the air compressor of the modification of Embodiment 2 of this invention. It is a block diagram which shows the structure of FIG. It is a conceptual diagram which shows an example of the connection state of the structure of the security system principal part of the air compressor of Embodiment 3 of this invention. It is a block diagram which shows the structure of FIG.

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

(Embodiment 1) The air compressor 10 according to Embodiment 1 shown in FIGS. 1 to 3 is an air compressor that operates by driving a motor, and its configuration will be described. Two

air tanks

12a and 12b, and leg portions 13 are attached to the lower surfaces of both end portions of each of the

air tanks

12a and 12b.

The air compressor 10 is disposed at a predetermined installation location at the leg portion 13, and handle

portions

14 a and 14 b are provided at both ends of the base 11. The air compressor 10 is provided with

handle portions

14 a and 14 b. Can be held and carried by the operator. That is, the air compressor 10 is a portable air compressor. *

As shown in FIG. 2, a drive box 15 is attached to the base 11, and a motor 16 is attached to the drive box 15. The motor 16 has a rotor or rotor 18 and a cylindrical stator or stator 19 and is driven by power supplied from a power source. The motor 16 used in the air compressor 10 of the first embodiment is, for example, a three-phase AC brushless motor. *

A motor rotating shaft 17 is attached to the rotor 18, and a compressed air generating unit 30 as a driven member is driven via the motor rotating shaft 17. The compressed air generation unit 30 generates compressed air by driving the motor 16. *

The stator 19 is provided with a plurality of field windings, that is, windings facing the rotor 18. The rotor 18 is incorporated in the stator 19, and the motor 16 is an inner rotor type. The stator 19 is attached to a drive box 15 as a housing that houses the motor 16. *

The motor rotating shaft 17 is rotatably supported by the drive box 15. Two

cylinders

21a and 21b are attached to the drive box 15 with a phase difference of 180 degrees in the rotation direction of the motor rotating shaft 17, and

pistons

22a and 22b reciprocate in the axial direction in the

respective cylinders

21a and 21b. Built in freely. *

In order to convert the rotational movement of the motor rotating shaft 17 into the reciprocating movement of the

pistons

22a and 22b in the axial direction, one end portions of connecting

rods

23a and 23b are pin-coupled to the

respective pistons

22a and 22b. At the other ends of the connecting

rods

23a and 23b,

eccentric cams

24a and 24b attached to the motor rotating shaft 17 are provided. The

eccentric cams

24a and 24b are opposite to the reciprocating direction of the

pistons

22a and 22b. Eccentric. *

Thus, when one piston 22a is driven in a direction to compress the

drive chambers

25a and 25b, the other piston 22b is driven in a direction to expand the

drive chambers

25a and 25b.

The

cylinder heads

26a and 26b provided in the

respective cylinders

21a and 21b are provided with

check valves

27a and 27b. When the

pistons

22a and 22b are driven in the direction in which the

drive chambers

25a and 25b are compressed, compressed air is supplied from the

discharge chambers

28a and 28b to the

air tanks

12a and 12b via the

pipes

29a and 29b. *

The piston 22b is a first-stage low-pressure piston that compresses by introducing outside air, and the air compressed by the low-pressure piston 22b is further compressed by the second-stage high-pressure piston 22a. The

cylinders

21 a and 21 b and the

pistons

22 a and 22 b described above constitute a compressed air generation unit 30, and the rotor 18 of the motor 16 is connected to the compressed air generation unit 30 via the motor rotation shaft 17. When the compressed air generator 30 is driven by the motor 16, the compressed air discharged from the high pressure piston 22a is stored in the

air tanks

12a and 12b.

That is, in the compressed air generation unit 30, compressed air is generated by the reciprocating motion of the

pistons

22a and 22b by the rotation of the motor 16, and the compressed air generated by the compressed air generation unit 30 is air tanks (tanks) 12a and 12b. To be stored.

A cooling fan 31 a is attached to one end portion of the motor rotating shaft 17 so as to be positioned outside the motor 16, and a cooling fan 31 b is attached to the other end portion of the motor rotating shaft 17. A control board (control unit, control member, main board) 32 is arranged outside the cooling fan 31b. As shown in FIG. 4, the control board 32 is arranged in an upright state.

In addition, the cooling air generated by the cooling fan 31 a is blown to the motor 16, while the cooling air generated by the cooling fan 31 b is blown to the control board 32. A cover 33 is attached to the base 11, and as shown in FIGS. 2 to 4, the compressed air generating unit 30, the motor 16, the

air tanks

12 a and 12 b and the like described above are covered with the cover 33. *

In order to supply the compressed air stored in the

air tanks

12a and 12b to the outside, as shown in FIG. 1,

couplers

34a and 34b are provided above the ends of the

air tanks

12a and 12b. In order to adjust the pressure of the compressed air discharged to the outside from the

respective couplers

34a, 34b,

pressure reducing valves

35a, 35b are provided in the

air tanks

12a, 12b. 36b.

The cover 33 is provided with an operation panel 37. The operation panel (operation unit, operation board) 37 is provided with operation members such as an operation switch 37a and a mode switch 37b shown in FIG. Then, by operating these operation switches 37a and mode switches 37b, a start / stop command for the motor 16 and a motor rotation speed are input. Alternatively, the switching of the drive mode of the motor 16 is instructed, and operation signals for these operations are output. *

The control board 32 controls the driving of the motor 16 and the air compression operation in the compressed air generation unit 30 based on the operation signal. *

The operation panel 37 is also provided with a display unit 37c. *

In addition, as shown in FIG. 4, the air compressor 10 includes a reading unit (reading member) 39 a that reads authentication information, and an information control board that performs authentication based on the authentication information read by the reading unit 39 a ( Authentication unit) 39 is provided. In the air compressor 10 of the first embodiment, an information control chip (authentication member) 38 for performing the authentication is mounted on the information control board 39 as shown in FIG. The information control board 39 can control not only the function of performing the security authentication but also various information such as the reading unit 39a and the operation unit according to the specification, and is limited to only the security function. It is not a member. *

The reading unit 39 a is attached so as to be exposed from the cover 33, and the reading unit 39 a and the information control board 39 are electrically connected via a cable 62. However, the reading unit 39 a may be mounted on the information control board 39. *

In the reading unit 39a, for example, authentication information written in a security card 40 (security key necessary for releasing security) shown in FIG. 8 to be described later or the like is transmitted via the antenna unit 39c shown in FIG. Read. On the information control board 39, a memory chip (storage unit, storage member) 39b in which authentication information is written and an information control chip 38, which is an authentication microcomputer chip, are mounted. The read authentication information is collated with the authentication information previously written in the memory chip 39b. This verification is performed by the information control chip 38, and as a result of the verification, when the authentication information of the security card 40 and the authentication information of the memory chip 39b match (authentication), the security of the air compressor 10 is released, Make it operational.

That is, the information control board 39 performs security management of the air compressor 10. *

Further, as shown in FIG. 4, the control board 32 is disposed at a deep position inside the cover 33 (inside the air compressor main body), while the operation panel 37 and the information control board 39 are air compressed. It is attached to the cover 33 of the machine body. Since the operation panel 37 is provided with switches such as an operation switch 37 a and a mode switch 37 b, the switches are disposed so as to be exposed from the cover 33. *

The information control board 39 is disposed below the operation panel 37, and the information control board 39 and the operation panel 37 are stacked. Therefore, in the air compressor 10 of the first embodiment, the reading unit 39a, the operation panel 37, and the information control board 39 are provided in the vicinity of the cover 33. However, the information control board 39 and the operation panel 37 may be arranged side by side, for example.

Next, details of the control system of the air compressor 10 shown in FIG. 5 will be described. *

The air compressor 10 operates by receiving power from an external AC power supply 50 (for example, a temporary power supply) via a power cord 51. *

First, power is supplied from the AC power supply 50 to the control board (control unit) 32, and the control board 32 drives the motor 16. An operation panel (operation board, operation unit) 37 for operating the air compressor 10 is connected to the control board 32 by a cable. *

As shown in FIG. 7, the operation panel 37 includes an operation switch (operation member) 37 a for switching ON / OFF of the operation of the air compressor body and a mode switch (operation member for switching the rotation speed of the motor 16 during operation. 37b and a display unit 37c for displaying various information.

The operation switch 37a and the mode switch 37b are, for example, tact switches, and are switches that are turned on when the operator is pressing, and are automatically turned off when the worker releases their hands. The display part 37c notifies the operator of the pressure value in the

air tanks

12a, 12b, the operation state of the air compressor 10, and the operation mode by turning on and off, for example, a pressure display LED, an operation state display, etc. LEDs, operation mode display LEDs, and the like are provided. *

As shown in FIG. 5, the rotational position of the motor 16 is detected by the position sensor 41 and fed back to the control board 32 as a voltage signal via a cable. The control board 32 controls the driving of the motor 16 based on the operation instruction signal from the operation switch 37a, the mode instruction signal from the mode switch 37b, the position detection signal from the position sensor 41, and the pressure detection signal from the pressure sensor 42. To do. This control is performed by the control microcomputer chip 32a (calculation unit 44 in FIG. 5) mounted on the control board 32 and shown in FIG. *

The control board 32 controls the overall operation of the air compressor 10, and includes a power supply unit 43, a calculation unit 44, a power supply current detection unit 45, a voltage detection unit 46, a motor current detection unit 47, It has a drive unit (inverter) 48 and an EEPROM (ElectricallyrasErasable Programmable Read Only Memory) 49 as a non-volatile memory.

In the control board 32, AC power is supplied from the AC power supply 50 to the power supply unit 43 via the power cord 51. The power supply unit 43 converts AC power from the AC power supply 50 into DC power, and supplies an appropriate voltage to the drive unit 48, the calculation unit 44, and other circuits. The power supply current detection unit 45 detects the current of the power supply unit 43. The voltage detection unit 46 detects the voltage of the power supply unit 43. The motor current detection unit 47 detects the drive current of the motor 16. *

The calculation unit 44 is based on various types of information (operation instruction signal from the operation switch 37a, mode instruction signal from the mode switch 37b, position detection signal from the position sensor 41, and pressure detection signal from the pressure sensor 42). The semiconductor switching elements (for example, FETs (Field-Effect-Transistors)) constituting the drive unit 48 are switched and driven. *

Driving power is supplied from the power supply unit 43 to the motor 16 through the switched driving unit 48. The calculation unit 44 records the operation log data (operation mode, operation setting value, rotation speed of the motor 16, etc.) of the air compressor 10 in the EEPROM 49 and reads out the operation log data of the air compressor 10 from the EEPROM 49. The calculation unit 44 displays the air pressure in the

air tanks

12a and 12b, the operation state, and the operation mode on the display unit 37c.

Further, the air compressor 10 performs authentication based on the information control board 39 that is an authentication unit for security, the reading unit 39a shown in FIG. 6 that reads the authentication information, and the authentication information read by the reading unit 39a. A control chip (authentication member) 38 is provided. In the reading unit 39a, the authentication information is read by the antenna unit 39c shown in FIG. *

In the air compressor 10 according to the first embodiment, the information control chip 38 is mounted on the information control board 39. The information control board 39 and the operation panel 37 are electrically connected by a cable 60. *

Next, security management of the air compressor 10 according to the first embodiment will be described with reference to FIGS. *

In the air compressor 10 of the first embodiment, as shown in FIGS. 8 and 9, an information control board (authentication unit) 39 and an operation panel (operation unit, operation board) 37 are provided separately. The operation panel (operation unit) 37 is electrically connected to the control board (control unit) 32 via the information control board (authentication unit) 39. That is, the control board 32 and the information control board 39 are electrically connected via the cable 61, and the information control board 39 and the operation panel 37 are further electrically connected via the cable 60. The reading unit 39 a and the information control board 39 are electrically connected via a cable 62. *

The information control board 39 makes it possible to supply power to the operation panel 37 when the authentication information corresponding to the information control board 39 is read by the reading unit 39a. That is, it is authenticated whether the authentication information read by the reading unit 39a from the security card 40 or the like shown in FIG. 8 matches the authentication information stored in advance in the storage unit of the information control board 39, for example, the memory chip 39b ( Verification). *

This authentication is performed by an information control chip (authentication microcomputer chip) 38 mounted on the information control board 39. In authentication, when the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b, power can be supplied to the operation panel 37. To do. Alternatively, the information control board 39 outputs an allowable signal to the operation panel 37.

The operation panel 37 can output a signal to the control board 32 via the information control board 39 after receiving the permission signal. *

That is, because the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b, a signal from the operation panel 37 passes through the information control board 39. Thus, the air reaches the control board 32 and the air compressor 10 can be operated. *

The information control board 39 controls the control board 32 when the authentication information read by the reading section 39a and the storage section of the information control board 39, for example, the authentication information of the memory chip 39b do not match. It may have a function of disabling. As a result, when the read authentication information does not match the authentication information on the information control board 39, the control of the control board 32 is disabled by the control of the information control board 39.

That is, when the read authentication information does not match the authentication information on the information control board 39 (when authentication cannot be obtained), the control board 32 cannot be controlled, and the air compressor 10 is operated normally. It cannot be operated. *

In addition, the identification information of the control board 32 may be written in a storage unit mounted on the information control board 39, for example, the memory chip 39b, and the other control board having the identification information different from the above identification information may be written. When electrically connected, the information control board 39 may have a function of disabling control of the other control board. Also in this case, the air compressor 10 cannot be operated normally.

According to the air compressor 10 of the first embodiment, the operation panel (operation unit, operation board) 37 and the information control board (authentication unit) 39 are separated separately, so that the operation panel is broken due to a failure of the operation switch. Even when the operation unit (operation board) including 37 is replaced, the information control board 39 can be left in the main body of the air compressor 10 as it is. Therefore, since the information control chip 38 mounted on the information control board 39 remains in the main body as it is, it is not necessary to change the security information of the air compressor 10. *

This eliminates the need to replace the security card (security key) 40 even if the operation panel 37 is replaced.

Therefore, even if the air compressor 10 is stolen and a new operation unit (operation panel 37) and a security card 40 are obtained as supply parts, an information control equipped with an information control chip 38 in which security information is stored is provided. Since the substrate (authentication unit) 39 remains in the main body, the air compressor 10 cannot be operated even if the operation panel (operation unit) 37 is replaced with a new one.

In other words, in the air compressor 10 of the first embodiment, the security function is not completed with easily replaceable supply parts such as the operation panel 37, but the information control chip 38 having a managed supply path is provided. Since the security system includes the mounted information control board 39, the main body of the air compressor 10 cannot be easily operated due to theft. *

That is, the security of the air compressor 10 according to the first embodiment can be improved.

Here, in the air compressor 10, an operation unit 52 (a configuration surrounded by a dotted line in FIG. 9) having a reading unit 39 a provided on the upper surface of the cover 33, the information control board 39 and the operation panel 37, and the control board 32. The approximate number of wirings connecting the two will be described. That is, the number of wirings connecting each of the reading unit 39a, the operation panel 37, and the information control board 39 arranged in the vicinity of the upper surface of the cover 33 and the control board 32 arranged inside the air compressor body is as follows. The smallest possible number is preferable.

Therefore, in the configuration of the first embodiment shown in FIG. 9, the reading unit 39 a and the operation panel 37 transmit and receive signals to and from the control board 32 via the information control board 39. Therefore, the number of wirings connecting the information control board 39 and the control board 32 can be expressed as the number of wirings connecting the operation unit 52 and the control board 32 as they are. *

At that time, for example, the connection between the information control board 39 and the control board 32 (wiring in the part A in FIG. 9) is, for example, two for power supply (GND) and two for communication (up / down), for a total of four. Just a book. That is, the number of wirings connecting the control board 32 and the operation unit 52 is four as an example, and the number of wirings can be reduced.

Further, in the operation unit 52, the connection between the operation panel 37 and the information control board 39 (wiring in the portion B in FIG. 9) is 18 as an example. The 18 breakdowns are (7 (7 segments) / 1 character) × 2 = 14 on the display unit 37c of the operation panel 37 to display a 2-digit number with an LED, and the operation switch 37a or There are three switches for the mode switch 37b and the like, and one for the power supply (GND), for a total of 18.

However, in the air compressor 10, the operation panel 37 and the information control board 39 are laminated, and both are arranged at very close positions, so that the wiring connecting them can be shortened, and each Wiring can be easily routed. *

Note that the connection between the information control board 39 and the reading unit 39a in the operation unit 52 (C section wiring in FIG. 9) is, for example, two for power and two for communication (up / down). There are four. *

Next, another authentication method (board authentication method) in the air compressor 10 of the first embodiment will be described.

First, in the air compressor 10, the identification information of the control board (control part) 32 memorize | stored in the memory | storage part of the information control board (authentication part) 39, for example, the memory chip 39b, for example, has the air compressor 10. The data is read into a storage medium (for example, a flash memory) managed by the user and outside the main body. *

Then, using the storage medium managed by the user, the identification information of the read control board 32 is stored in a storage unit of another (new) information control board 39, for example, the memory chip 39b, and the control board 32 is stored. And the other (new) information control board 39 are connected, and the control board 32 and the other (new) information control board 39 perform authentication.

In this case, when the information control board 39 storing the identification information of the control board 32 written in the storage medium managed by the user is connected, the main body of the air compressor operates, but other ( By simply connecting a new and different information control board 39 and the control board 32, authentication cannot be performed, and the security of the air compressor body is further improved in that the air compressor body does not operate. *

By providing the air compressor 10 with such security means, the anti-theft effect of the air compressor 10 can be further enhanced. *

(Embodiment 2) In the air compressor 70 of Embodiment 2, as shown in FIGS. 10 and 11, the control board 32, the information control board 39, the operation panel 37, and the reading unit 39a are connected in series. Has been. At that time, similarly to the air compressor 10 of the first embodiment, the information control board (authentication unit) 39 and the operation panel (operation unit, operation board) 37 are provided in a separated state. Part) 37 is electrically connected to a control board (control part) 32 via an information control board (authentication part) 39.

That is, the control board 32 and the information control board 39 are electrically connected via the cable 61, and the information control board 39 and the operation panel 37 are further electrically connected via the cable 60. The operation panel 37 and the reading unit 39a are electrically connected via a cable 63. *

Note that the information control board 39 supplies power to the operation panel 37 when the authentication information corresponding to the information control board 39 is read by the reading unit 39a, as in the air compressor 10 of the first embodiment. Enable supply. That is, the authentication information read by the reading unit 39a from the security card 40 or the like shown in FIG. 10 and the authentication information stored in advance in the storage unit on the information control board 39, for example, the memory chip 39b, are authenticated. (Verification) is performed. *

This authentication is performed by the information control chip 38 mounted on the information control board 39 as in the first embodiment. In authentication, when the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b, power can be supplied to the operation panel 37. To do. Alternatively, the information control board 39 outputs an allowable signal to the operation panel 37.

The operation panel 37 can output a signal to the control board 32 via the information control board 39 after receiving the permission signal. That is, in the air compressor 70 of the second embodiment, the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b. The signal from 37 reaches the control board 32 via the information control board 39, and the air compressor 70 can be operated.

Similarly to the first embodiment, the identification information of the control board 32 may be written in a storage unit mounted on the information control board 39, for example, the memory chip 39b. When the information control board 39 is electrically connected to the other control board, the information control board 39 may have a function of disabling the control of the other control board. Also in this case, the air compressor 70 cannot be operated normally. *

As described above, also in the air compressor 70 according to the second embodiment, the security can be improved in the same manner as the air compressor 10 according to the first embodiment.

Also in the air compressor 70, as shown in FIG. 11, the connection of the wiring connecting the operation unit 52 (configuration surrounded by the dotted line in FIG. 11) and the control board 32 (the wiring in the A part in FIG. 11). As an example, two power supplies (GND) and two for communication (up / down) have a total of four, and the number of wirings can be reduced as in the first embodiment.

Further, in the operation unit 52, when the information control board 39 and the reading unit 39a are connected via the operation panel 37 (wiring connecting the B part and the C part in FIG. 11), the operation panel 37 is bypassed by a desired wiring pattern. By forming the wiring 37d and using the bypass wiring 37d, it is possible to reduce the number of wirings connecting the B part and the C part in FIG.

Since the other effects obtained by the air compressor 70 of the second embodiment are the same as those of the first embodiment, a duplicate description thereof is omitted. *

(Modification) In the air compressor 80 of the modification of the second embodiment, as shown in FIGS. 12 and 13, the control board 32, the operation panel 37, the information control board 39 and the reading unit 39 a are connected in series. It is connected. At that time, similarly to the air compressor 10 of the first embodiment, the security board (authentication unit) 39 and the operation panel (operation unit, operation board) 37 are provided separately, and the information control board (authentication) is provided. Part) 39 is electrically connected to a control board (control part) 32 via an operation panel (operation part) 37.

That is, the control board 32 and the operation panel 37 are electrically connected via the cable 64, and the operation panel 37 and the information control board 39 are electrically connected via the cable 60. The information control board 39 and the reading unit 39a are electrically connected via a cable 62.

The information control board 39 makes it possible to supply power to the operation panel 37 when the authentication information corresponding to the information control board 39 is read by the reading unit 39a. That is, it is authenticated whether the authentication information read by the reading unit 39a from the security card 40 or the like shown in FIG. 12 matches the authentication information stored in advance in the storage unit of the information control board 39, for example, the memory chip 39b ( Verification).

This authentication is performed by the information control chip 38 mounted on the information control board 39 as in the first embodiment. In the authentication, when the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b, the information control board 39 sends the information to the operation panel 37. To output an allowable signal.

The operation panel 37 can output a signal to the control board 32 after receiving the permission signal. *

Therefore, also in the air compressor 80 according to the modification of the second embodiment, the authentication information read by the reading unit 39a matches the authentication information stored in the storage unit of the information control board 39, for example, the memory chip 39b. In addition, a signal from the operation panel 37 reaches the control board 32, and the air compressor 80 can be operated.

Similarly to the first embodiment, the identification information of the control board 32 may be written in a storage unit mounted on the information control board 39, for example, the memory chip 39b. When the information control board 39 is electrically connected to another control board provided with the information control board 39, the information control board 39 may have a function of disabling control of the other control board, such as sending a control suppression signal. Good. Also in this case, the air compressor 80 cannot be operated normally. *

As described above, also in the air compressor 80 according to the modification of the second embodiment, the security can be improved as in the air compressor 10 of the first embodiment.

Also in the air compressor 80, as shown in FIG. 13, the connection of the wiring connecting the operation unit 52 (the configuration surrounded by the dotted line in FIG. 13) and the control board 32 (the wiring in section A in FIG. 13). As an example, two power supplies (GND) and two for communication (up / down) have a total of four, and the number of wirings can be reduced as in the first embodiment. *

Further, in the operation unit 52, when the control board 32 and the information control board 39 are connected via the operation panel 37 (the wiring connecting the A part and the B part in FIG. 13), the operation panel 37 is bypassed by a desired wiring pattern. By forming the wiring 37d and using the bypass wiring 37d, it is possible to reduce the number of wirings connecting the A part and the B part in FIG. *

Since the other effects obtained by the air compressor 80 of the modification of the second embodiment are the same as those of the first embodiment, the duplicate description is omitted.

(Embodiment 3) As shown in FIGS. 14 and 15, the air compressor 90 of Embodiment 3 includes an information control board (authentication unit) 39 and an operation panel (operation unit, operation board) 37. Each has a structure that is electrically connected to a control board (control unit) 32 separately.

That is, the control board 32 and the operation panel 37 are electrically connected via the cable 64, while the control board 32 and the information control board 39 are electrically connected via the cable 61. The information control board 39 and the reading unit 39a are electrically connected via a cable 62.

Further, the information control board 39 enables the power supply to the operation panel 37 when the authentication information corresponding to the information control board 39 is read by the reading unit 39a. That is, it is authenticated whether the authentication information read by the reading unit 39a from the security card 40 or the like shown in FIG. 14 matches the authentication information stored in advance in the storage unit of the information control board 39, for example, the memory chip 39b ( Verification). *

This authentication is performed by the information control chip 38 mounted on the information control board 39 as in the first embodiment. In the authentication, when the authentication information read by the reading unit 39a matches the authentication information of the storage unit of the information control board 39, for example, the memory chip 39b, the information control board 39 To output an allowable signal. *

The control board 32 can supply power to the operation panel 37 and output signals after receiving the permission signal.

Therefore, also in the air compressor 90 of the third embodiment, when the authentication information read by the reading unit 39a matches the authentication information of the storage unit of the information control board 39, for example, the memory chip 39b, the operation is performed. A signal from the panel 37 reaches the control board 32, and the air compressor 90 can be operated. *

Similarly to the first embodiment, the identification information of the control board 32 may be written in a storage unit mounted on the information control board 39, for example, the memory chip 39b. When the information control board 39 is electrically connected to the other control board, the information control board 39 may have a function of disabling the control of the other control board. Also in this case, the air compressor 90 cannot be operated normally.

As described above, also in the air compressor 90 according to the third embodiment, the security can be improved as in the air compressor 10 according to the first embodiment.

In the air compressor 90, as shown in FIG. 15, the connection of the wiring connecting the operation unit 52 (the configuration surrounded by the dotted line in FIG. 15) and the control board 32 (part A and part B in FIG. 15). In this wiring, the information control board 39 and the operation panel 37 are separately connected to the control board 32, so it is difficult to reduce the number of wirings, but the circuit configuration of the information control board 39 is easy. Can be. *

Since the other effects obtained by the air compressor 90 of the third embodiment are the same as those of the first embodiment, a duplicate description thereof is omitted.

It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. *

In the air compressor of the above embodiment, the information control board 39 and the control board 32 may be connected via a connection board (relay board) such as a connector.

In the first to third embodiments, the case where the present invention is an air compressor has been described. However, the air compressor can be replaced with a generator using an engine or the like as a power source. That is, in an engine generator, an information control board (authentication unit) and an operation panel (operation unit) are separately separated and electrically connected to the control board (control unit), thereby supplying power to the power tool. It can be employed as a means for improving the security of the engine generator to be supplied.

DESCRIPTION OF SYMBOLS 10 ... Air compressor, 11 ... Base, 12a, 12b ... Air tank, 13 ... Leg part, 14a, 14b ... Handle part, 15 ... Drive box, 16 ... Motor, 17 ... Motor rotating shaft, 18 ... Rotor, DESCRIPTION OF SYMBOLS 19 ... Stator, 21a, 21b ... Cylinder, 22a, 22b ... Piston, 23a, 23b ... Connecting rod, 24a, 24b ... Eccentric cam, 25a, 25b ... Drive chamber, 26a, 26b ... Cylinder head, 27a, 27b ... Reverse Stop valve, 28a, 28b ... discharge chamber, 29a, 29b ... piping, 30 ... compressed air generating part, 31a, 31b ... cooling fan, 32 ... control board (control part, control member), 32a ... microcomputer chip, 33 ...

cover

34a, 34b ... coupler, 35a, 35b ... pressure reducing valve, 36a, 36b ... pressure gauge, 37 ... operation panel (operation unit, operation board), 37a ... luck Switch (operation member), 37b ... mode switch (operation member), 37c ... display unit, 37d ... bypass wiring, 38 ... information control chip (including authentication member), 39 ... information control board (authentication unit), 39a ... reading Part (reading member), 39b ... memory chip (storage part, storage member), 39c ... antenna part, 40 ... security card (security key), 41 ... position sensor, 42 ... pressure sensor, 43 ... power supply part, 44 ... calculation , 45... Power supply current detection unit, 46... Voltage detection unit, 47... Motor current detection unit, 48... Drive unit, 49. 62, 63, 64 ... cable, 70, 80, 90 ... air compressor

Claims

A motor driven by supply of electric power from a power source, a compressed air generation unit that generates compressed air by driving the motor, a tank that stores the compressed air generated by the compressed air generation unit, and An operation unit that instructs start / stop and switching of the drive mode of the motor, and that outputs an operation signal; a control unit that controls driving of the motor based on the operation signal; and authentication information A reading unit that reads, and an authentication unit that includes an authentication member that performs authentication based on the authentication information read by the reading unit, and the operation member and the authentication member are provided on independent substrates. air compressor.
2. The apparatus according to claim 1, further comprising a cover that covers the motor, the compressed air generation unit, and the tank, wherein the control unit is disposed inside the cover, and the operation unit and the reading unit are attached to the cover. The air compressor described.
The air compressor according to claim 1 or 2, wherein the operation unit and the authentication unit are electrically connected to the control unit separately.
When the authentication information corresponding to the authentication unit is read, the authentication unit outputs a permission signal to the control unit, and the control unit receives the permission signal, and then sends the permission signal to the operation unit. The air compressor according to any one of claims 1 to 3, which enables the supply of power or reception of signals from the operation unit.
The operation unit is electrically connected to the control unit via the authentication unit, and the authentication unit supplies power to the operation unit when the authentication information corresponding to the authentication unit is read. Or the air compressor of Claim 1 or 2 which enables the output with respect to the said control part of the signal from the said operation part.
The operation unit is electrically connected to the control unit via the authentication unit, and the authentication unit outputs an allowance signal to the operation unit when the authentication information corresponding to the authentication unit is read. And the said operation part is an air compressor of Claim 1 or 2 which enables the output of the signal to the said control part via the said authentication part, after receiving the said permission signal.
The authentication unit is electrically connected to the control unit via the operation unit, and the authentication unit outputs an allowance signal to the operation unit when the authentication information corresponding to the authentication unit is read. The air compressor according to claim 1, wherein the operation unit enables output of a signal to the control unit after receiving the permission signal.
The authentication unit includes a storage unit capable of storing identification information of the control unit, and another control unit including identification information different from the identification information of the control unit stored in the storage unit is the authentication unit. The air compressor according to any one of claims 1 to 7, wherein control of the other control unit is disabled when electrically connected to the air compressor.
When another control unit having identification information different from the identification information stored in the authentication unit is electrically connected to the authentication unit, the signal to the other control unit is blocked, or The air compressor according to any one of claims 1 to 8, wherein a drive suppression signal is sent to another control unit.
The air compressor according to any one of claims 1 to 9, wherein the compressed air generation unit generates the compressed air by a reciprocating motion by rotation of the motor.
10. The air compressor authentication method according to claim 8, wherein the identification information of the control unit stored in the storage unit of the authentication unit is read into an external storage medium, and the storage medium is stored in the storage unit. An authentication method for an air compressor, wherein the read identification information is stored in a storage unit of another authentication unit, and authentication is performed by the control unit and the other authentication unit.