JPH0539683A - Bar code type electronic lock - Google Patents

Abstract

PURPOSE:To positively perform reading operation and prevent malfunction in a bar code type electronic lock by reading a bar code from a card in a static condition. CONSTITUTION:First, when a card is inserted into a reader 10, a first detecting means 14 is operated to light a light source for sensors. Next, when the card is further inserted deeper into the reader, a second detecting means 15 is operated. The second detecting means generates a detected signal when the first detecting means is operated to detect the existence of the card, and the reader reads a bar code indicated on the card in a static condition. A reading control device gives a releasing signal to a lock control circuit 31 such as locker, etc., when it receives output of the bar code reader containing signals indicating regular codes, and the opening and closing part is locked, and gives a locking signal to the lock control circuit when it receives output of the bar code reader containing signals indicating regular codes, and the opening and closing part is unlocked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device, especially a bar.
The present invention relates to a bar code type electronic lock for reading a bar code from a card on which the code is displayed.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Utility Model Laid-Open No. 62-44356, a holder for a bar-co-dreader which uses a pen-shaped bar-co-dreader is known. The holder for the bar-co-dreader is provided with a reader accommodating hole having an open tip for inserting the bar-co-dreader. Also, a gap is formed so as to face the opening and allow a card with a bar code to pass therethrough. This holder for a bar code reader has an advantage that the conventional pen type bar code reader can be used as it is. Further, Japanese Utility Model Laid-Open No. 63-48268 discloses a recording medium reading device provided with a guide groove for moving a card recording medium. This recording medium reading device causes a part of the card recording medium to travel with the side and bottom portions of the guide groove as guides, and data is read by a reading unit provided inside the guide groove. This reading device is provided with movement adjusting means for moving the bottom portion in the direction of changing the depth of the guide groove. Japanese Utility Model Laid-Open No. 64-10856 discloses a bar code reader in which a single photoelectric sensor and a scanning photoelectric sensor composed of multiple elements are arranged adjacent to each other. This bar code reader is capable of receiving the reflected light from the bar code by a single photoelectric sensor and a scanning photoelectric sensor composed of multiple elements by a common light source and optical system. A light reception signal or a light reception signal of a scanning photoelectric sensor including multiple elements can be selected and read.

[0003]

The bar code reader described above is a scanning type reader that reads the bar code while moving the card. Since the conventional scanning type reading device reads data while the card is moving, a reading error often occurs. For this reason, the reading operation must be performed multiple times. On the other hand, an electronic lock that uses a magnetic card to unlock the locker door has been proposed. However, in the electronic lock using the magnetic card, the operator must move the card along the guide passage of the reading device to cause the reading device to read the magnetic information. Therefore, also in this case, since the scanning type reading device of the magnetic card reads while the card is moving, a reading error often occurs. Further, in the locking device having a structure in which the door is automatically locked when the door is closed, there is a risk of locking the door while the card is placed in the rocker. The present invention provides a bar-code type electronic lock capable of surely reading the bar-code by simply inserting the card in which the bar-code in the stationary state is displayed into the reading device. The purpose is to do.

[0004]

A barco according to the present invention
The electronic lock has a bar code reader that reads the bar code displayed on the card, a lock control circuit that is provided in the opening / closing section and operates the lock device, and a regular code. When the output of the bar code reader including the signal to be displayed is received and the opening / closing portion is in the locked state, the unlock signal is given to the lock control circuit to include the signal to display the normal code. Coder
And a reading control device for receiving a lock signal to the lock control circuit when the opening / closing part is in the unlocked state. This bar code type electronic lock is provided, for example, on a rocker. The bar code reader is a first detection means for detecting the insertion of the card with the bar code displayed in the case, and a sensor which is turned on by the operation of the first detection means. Light source, second detecting means for detecting the presence of the card while the first detecting means is activated, and generating a detection signal, and display on the card when the detection signal is generated. And a reader for reading the recorded bar code.

[0005]

When the card displaying the bar code is inserted into the bar code reader of the bar code type electronic lock, the first detecting means is operated and the first detecting means is operated. The light source for the sensor is turned on by the operation of the means. Further, when the card is inserted deep into the reader, the second detection means is activated. The second detection means produces a detection signal when the presence of the card is detected while the first detection means is activated. This detection signal causes the bar code reader to display the bar code displayed on the card.
Read the code. After that, the sensor light source is turned off. The read control unit includes a bar code containing a signal indicating a normal code.
When the output of the driver is received and the opening / closing part is in a locked state, an unlocking signal is given to a lock control circuit such as a rocker and a bar code reader including a signal for displaying a normal code. Is received and the opening / closing part is in the unlocked state, a lock signal is given to the lock control circuit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a bar-code type electronic lock according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 to 7, the reading device 10 includes a case 11, various electronic components provided adjacent to a substrate 12 arranged in the case 11, and a case. 11 and a cover 13 that covers 11. First and second in the case 11
The first switch 14 and the second switch 14
The switch 15 is fixed to a mounting block 18 provided under the case 11. First switch 14 and second
The switch 15 is composed of, for example, a micro switch. In addition, the first switch 14 and the second switch 15
A recess 17 into which the end of the card 16 is inserted is provided in the lower portion of the case 11 adjacent to the. The recess 17 is formed between the bottom wall 11a of the case 11 and the lower plate 23 fixed to the bottom wall 11a of the case 11 via the spacer 22. A guide cover 1 having an inlet 19a formed in the front of the recess 17.
9 is attached. The movable pieces 14a and 15a of the first switch 14 and the second switch 15 pass through the openings 23a and 23b formed in the lower plate 23 and project into the recess 17. The movable piece 14a of the first switch 14 is attached to a position closer to the inlet 19a than the movable piece 15a of the second switch 15. An opening 11b is formed in the bottom wall 11a of the case 11, and a transparent plate 24 is provided above the opening 11b.
It is arranged on a supporting portion 25 provided in the inside of the unit 1. Transparent plate 2
A lens support 27 that supports the lens holder 26 is provided above the position 4. The lens support 27 is provided with a slit 29 for receiving the light shield plate 28 having an opening 28a. The opening 28a of the light shielding plate 28 allows only light directed to the lens holder 26 having a lens (not shown) to pass through. Figure 7
As shown in FIG. 3, the substrate 12 is provided with a light emitting diode 20 as a light source for the sensor and a CCD image sensor 21 as a reader for reading the bar code displayed on the card 16. .. The CCD image sensor 21 is arranged above the lens holder 26. The substrate 12 is provided with a light emitting diode 30 protruding outward from the hole 13a of the cover 13. When the card 16 is inserted into the recess 17, the card is
The insertion tip portion of the cord 16 first comes into contact with the movable piece 14a of the first switch 14 to turn on the first switch 14. The light emitting diode 20 is turned on when the first switch 14 is turned on. Further, when the card 16 is inserted deeply, the second switch 15 is turned on by the insertion tip of the card 16 while the first switch 14 is turned on. The light emitting diode 20 illuminates the insertion tip of the card 16 inserted into the recess 17 through the opening 11b of the case 11. As a result, the bar code displayed on the card 16 is irradiated with a sufficient amount of light. The second switch 15 generates a detection signal when the presence of the card 16 is detected when the first switch 14 is turned on. When this detection signal is generated, the CCD image sensor 21 reads the bar code displayed on the card 16. FIG. 8 is a block diagram showing the read control circuit 32 attached to the substrate 12. Each input terminal of the reading control circuit 32 has a first switch 14,
The second switch 15, the CCD image sensor 21, and the lock control circuit 31 provided at a different position are connected. Further, the light emitting diodes 20 and 30 and the lock control circuit 31 are connected to the respective output terminals of the reading control circuit 32. In the above structure, the read control circuit 32 is operated based on the operation sequence shown in FIG. That is, the star
In step 41, the reading control circuit 32 determines whether the first switch 14 is turned on. Card 1
When 6 is inserted into the recess 17 and the first switch 14 is turned on, the light emitting diode 20 is turned on in step 42. Next, in step 43, it is determined whether or not the card 16 has been removed from the recess 17. The card 16 is the recess 1
If the second switch 15 is not turned on and is deeply inserted into the recess 17, it is determined in step 44 whether the second switch 15 is turned on. When the second switch 15 is turned on, the CCD image sensor 21 is operated and the bar code displayed on the card 16 is read (step 45). afterwards,
The light emitting diode 20 is turned off (step 46). Then, in step 47, the read control circuit 32 determines whether the read data is a predetermined one, and if the read data is a predetermined one, an output is sent to the lock control circuit 31. For example, a lock device (not shown) is unlocked. When the lock device is unlocked, a signal for detecting unlocking is given to the reading control circuit 32 from the lock control circuit 31. As a result, the light emitting diode 30 is lit for a certain period of time to notify the unlocking of the lock device. Then, step 49
When the first switch 14 is turned off at
The can ends. When the first switch 14 is turned off without the second switch 15 being turned on in step 43, the light emitting diode 20 is turned off in step 50 to return. In this embodiment, if the card 16 is inserted into the entrance 19a only on the part where the bar code is displayed, the CCD image sensor 21 reads the bar code displayed on the card 16. Therefore, the reading device 10 can be formed thin. As shown in FIG. 10, the lock control circuit 31 is provided adjacent to the opening / closing detection switch 52 of the opening / closing portion provided adjacent to the latch 51 of the locking device and the solenoid 53 for detecting the locking / unlocking of the opening / closing portion. The lock / unlock detection switch 54 is provided. The opening / closing detection switch 52 is operated by a latch 51 that projects when the opening / closing portion is opened and retracts when the opening / closing portion is closed. Lock / Unlock detection switch 5
4 is operated by the movement of the solenoid 53. The read control circuit 32 shown in FIG. 10 is operated according to the operation sequence shown in FIG. From the start of step 60 to step 61, the reading control circuit 32 determines whether or not the first switch 14 is in the ON state by inserting the card 16. Step 6 when the first switch 14 is in the ON state
In step 2, it is determined whether the second switch 15 is in the on state by inserting the card 16. When the second switch 15 is in the ON state, the reading control circuit 32 in step 63.
Determines whether the normal bar code is displayed on the card 16. When the normal bar code is displayed on the card 16, the read control circuit 32 activates a program-controlled first timer incorporated therein (step 6).
4). Next, in step 65, the open / close detection switch 5
Based on the output of 2, the reading control circuit 32 determines whether the door as the opening / closing portion of the rocker is closed. When the door is in the closed state, in step 66, the reading control circuit 32 determines whether the door is in the locked state by the output of the locking / unlocking detection switch 54. In the locked state, in step 67, the solenoid 53 as an actuator is operated to unlock the door. This unlocked state is detected by the lock / unlock detection switch 54 (step 68). Subsequently, the routine proceeds to step 69, where the second timer incorporated in the reading control circuit 32 is operated, and it is judged from the output of the open / close detection switch 52 whether the door of the rocker is open (step 7).
0). In the open state, the process returns to step 61. If the door is not open in step 70, the process proceeds to step 71, in which it is determined whether or not the second timer has counted a predetermined time. If the second timer does not count the predetermined time, the process returns to step 70. When the door is unlocked by the output of the lock / unlock detection switch 54 in step 66, or when the second timer counts a predetermined time in step 71, the reading control circuit 32 determines in step 73 the solenoid 53 as an actuator. Is activated. In step 74, the reading control circuit 32 determines whether or not the door is locked (locked) based on the output of the locking / unlocking detection switch 54. If it is locked, the key is
Mode 16 is removed from the reader 10 and the first switch 14
It is determined whether or not is turned off. First switch 1
When 4 is turned off, the process returns to step 61. In step 65, when the door is in the open state, the process proceeds to step 72, and it is determined whether the first timer has counted a predetermined time. When the predetermined time is counted, the process returns to step 61. The bar-code type electronic lock reading device 10 according to the present invention is used, for example, for locking and unlocking a door 81 of a rocker 80 shown in FIG. The read control circuit 32 shown in FIG. 10 can also be operated according to the operation sequence shown in FIG. From step 83 to step 84, the read control circuit 32 determines whether or not the card 16 is inserted. When the card is inserted in step 84, it is determined in step 85 whether the bar code is valid. If the bar code is valid, in step 86 the code is registered and the code is registered if the code is not registered. Next, at step 87, it is judged whether or not the card 16 is pulled out. If the card 16 is not pulled out, the door 8 is opened at step 88.
It is determined whether 1 is open. If it is not opened, the procedure returns to step 87, and if it is released, step 89
Then, it is determined whether the door 81 is closed. When the card 16 is pulled out in step 87, step 9
At 0, it is determined whether the door 81 has been opened. When the door 81 is opened, the door 81 is opened in step 91.
It is determined whether or not was closed. When the door 81 is closed in step 91, it is determined in step 92 whether the card 16 has been inserted. If the door 81 is not closed in step 81 or the card 16 is not inserted in step 92, the process returns to step 91. When the card 16 is inserted in step 92,
In step 93, it is determined whether or not the bar code 93 is valid. If it is not valid, the procedure returns to step 92, and if it is valid, the procedure proceeds to step 94. When the door 81 is closed in step 89, the process proceeds to step 94. After being locked at step 94, the card 16 is locked at step 95.
Is extracted, and if the card 16 is extracted, the routine proceeds to step 96. The embodiment of the present invention can be modified without being limited to the above embodiment. For example, other optical or magnetic detection sensors may be used instead of the first switch 14 and the second switch 15. Further, the output of the read control circuit 32 can be connected to a lock control device other than the rocker.

[0008]

As described above, in the reading apparatus of the present invention, since the bar code is read from the card in the stationary state, the reading operation becomes reliable and the malfunction can be prevented. Therefore, it becomes possible to smoothly operate the device using the reading device.

[Brief description of drawings]

FIG. 1 is a front view of a reading device used for a bar-code type electronic lock according to the present invention.

2 is a plan view

[Figure 3] Bottom view

FIG. 4 Side view

5 is a sectional view taken along line BB in FIG.

6 is a sectional view taken along the line AA of FIG.

FIG. 7 is an exploded perspective view of a reading device.

FIG. 8 is a circuit diagram of a reading device.

9 is a flow chart showing the operation sequence of the circuit of FIG.

FIG. 10 is an electric circuit diagram of a bar-code type electronic lock according to the present invention.

11 is a flow chart showing an operation sequence of the circuit of FIG.
Chart

FIG. 12 is a perspective view of a rocker to which a bar-code type electronic lock according to the present invention is applied.

FIG. 13 is a flowchart showing an operation sequence when operating the lock device of the rocker.

[Explanation of symbols]

16. ． Card, 11. ． Case, 14. ． First switch (first detection means), 15. ． Second switch (second detection means), 20. ． Light emitting diode (light source for sensor), 21. ． CCD image sensor (reader), 3
1. ． Lock control circuit, 32. ． Read control circuit

Claims (3)

[Claims] 1. A bar code reader for reading a bar code displayed on a card, a lock control circuit for activating a lock device provided at an opening / closing section, and a regular code. When the output of the bar code reader including the signal to be displayed is received and the opening / closing portion is in the locked state, the unlock signal is given to the lock control circuit to include the signal to display the normal code. Coder
A bar-code type electronic lock, which comprises a reading control device which receives the output of the terminal and outputs a locking signal to the lock control circuit when the opening / closing part is in the unlocked state. 2. The bar-code type electronic lock according to claim 1, which is provided on the rocker. 3. A bar code reader for detecting the insertion of a card on which a bar code is displayed into a case, and an operation of the first detecting means. A light source for a sensor, a second detecting means for detecting the presence of a card in a state where the first detecting means is activated, and generating a detection signal; The bar displayed on the card
A bar code type electronic lock as set forth in claim 1, including a reader for reading a code.