Patent name: production method of password device of lock
Technical field:
The invention relates to a cipher device of a lock, in particular to a cipher device which adds double digital coding protection to both the lock and the key.
Traditional password lock realizes mechanical coding by changing the mechanical structure of lock and key, which is complex in structure, high in cost and low in security. Digital coding has the characteristics of large combination number, small repetition rate and good concealment. Chinese patent 93209800.2 discloses a "contactless wireless remote control electronic password key", which adopts mechanical and electronic double coding. However, the existing password lock and key, whether mechanical code or electronic code, are firmly connected with the key itself. Non key owners can unlock the key as long as they get it. Once the key is not properly kept, it will cause great trouble.
The invention aims to provide a cipher device of a lock, which can be used in combination with any mechanical lock, and adopts double digital coding protection of code and password. Not only the key with correct code is required, but also the correct password must be input on site to open the lock. High safety, easy to use and low cost.
The technical scheme of the invention is as follows: a cipher device of the lock, including a cipher device in the lock and a key cipher device; the cipher device in the lock includes a central processor, a setting switch, a clutch, a memory, a signal receiver and a power supply, the central processor is respectively connected with a setting switch, a clutch, a memory, a signal receiver and a power supply; the key cipher device includes a central processing The central processor is respectively connected with the keyboard, the display unit, the signal transmitter and the power supply; the password device of the lock and the password device of the key are connected with the signal receiver of the former and the signal transmitter of the latter; the password installation performs initialization, setting or changing the password, unlocking and other operations on the key; and the key is connected with the keyboard, the display unit, the signal transmitter and the power supply To initialize, perform the following steps: Step 1, assign a value of one to the setting times; step 2, check whether the setting times are less than or equal to step 2, if yes, proceed to step 3, otherwise prompt and end the task; step 3, write the code in the central processor of the key; step 4, check whether the code is correct, if yes, prompt and end the task, otherwise prompt is incorrect, erased and set Set the number of times and return to the second step; set or change the password, perform the following steps: Step 1, check whether there is a set switch signal, step 2 if yes, otherwise prompt and end the task; step 2, check whether the key code is correct, step 3 if yes, otherwise alarm and end the task; step 3, check whether there is a password signal, step 4 if yes, no You will be prompted to enter the password and end the task from the key keyboard. Step 4: verify whether the new password is available. If yes, delete the original password in the locked memory, save the new password and end the task. Otherwise, directly end the task. To unlock the lock, perform the following steps. Step 1:
The unlocking times unit in the lock memory is assigned with a value of 1; step 2: check whether the unlocking times are less than or equal to 3; if yes, carry out step 3; otherwise, end the task; step 3: check whether the key code is correct; if yes, carry out step 4; otherwise, alarm and end the task; step 4: check whether there is a password signal; if yes, carry out step 5; otherwise, prompt the key keyboard Enter the password and end the task. Step 5: check whether the password is correct. If yes, unlock. Otherwise, prompt and unlock times will be added to step 1.
The prompt of the operation process is displayed by the display unit.
The cipher device of the lock provided by the invention can be used in combination with any mechanical lock, and is protected by double digital coding of code and password. Not only the key with correct code, but also the correct password must be input on site to open the lock. High safety, easy to use and low cost.
The invention will be further described in detail with reference to the drawings and embodiments
Fig. 1 is the schematic diagram of the lock cipher device of the invention; FIG. 2 is the schematic diagram of the key cipher device of the invention; FIG. 3 is the flow chart of setting the key of the invention; FIG. 4 is the flow chart of setting or changing the password of the invention; FIG. 5 is the flow chart of unlocking of the invention.
The lock cipher device includes a lock cipher device and a key cipher device; the lock cipher device includes a central processor, a set switch, a clutch, a memory, a signal receiver and a power supply, the central processor is respectively connected with a set switch, a clutch, a memory, a signal receiver and a power supply; the key cipher device includes a central processor, a keyboard, a display unit For signal transmitter and power supply, the central processor is respectively connected with the keyboard, display unit, signal transmitter and power supply; the password device performs initialization, setting or changing password, unlocking and other operations on the key; for key initialization, perform the following steps: Step 1, assign a value to the setting times; step 2, verify whether the setting times are less than or equal to step 2, and then proceed Step 3: if not, prompt the number of times allowed and end the task; step 3: write the code in the key; step 4: check whether the code is correct, and if yes, prompt the correct and end the task; otherwise, prompt the number of times incorrect, erasing and setting together to return to step 2. The central processing unit in the key stores the correct code and becomes the legal key.
To set or change the password, perform the following steps to insert the key into the lock. Step 1: close the setting switch. If the program detects that there is a setting switch signal, proceed to step 2. If it is not closed
