CN101369353A - Anti-stealing unpacking recorder - Google Patents

Abstract

The invention discloses an anti-stealing electricity stealing recorder based on radio frequency technology. The invention is mainly used in the field of high and low voltage anti-stealing electricity, and can effectively solve various box-opening electric meter tampering with electric meters. The invention includes an electronic lock for locking the meter box and storing various unlocking records, a radio frequency card for opening the meter box, a reader for authorizing and revoking the authorization of the radio frequency card, a data collector for downloading and uploading unlocking record data, and a device for Control Center server for risk analysis. The anti-stealing unpacking recorder can authorize unforgeable RF cards to effectively prevent illegal unpacking; use electronic locks to record various unpacking records; import unpacking records stored in electronic locks into into the database, and automatically identify high-risk meter boxes and possible illegal box openings. It can effectively curb electricity theft, reduce the line loss rate, and protect the legitimate rights and interests of power supply companies.

Description

Anti-stealing unpacking recorder

technical field

The invention relates to an anti-electricity theft unpacking recorder based on radio frequency technology, which is mainly used in the field of anti-electricity theft.

Background technique

The problem of stealing electricity is a common problem faced by all power supply enterprises, and it has been seriously perplexing leaders and staff at all levels in the power department and management department. The existing anti-stealing technical means are still relatively backward, which is reflected in the fact that the anti-stealing function of the electric energy metering device is too single. At present, the meter boxes used are basically equipped with mechanical locks or seals on the door of the meter box. To a certain extent, the problem of the door lock of the meter box being picked and the seal being opened still occurs from time to time, and it can basically be restored after the electricity is stolen. Therefore, it is necessary to adopt high-tech means to carry out high-tech transformation on the door lock system of the meter box installed by the high-voltage and low-voltage users who are suspected of stealing electricity, so as to improve the power company's ability to prevent electricity theft.

At present, a domestic utility model relates to an alarm and anti-stealing device in the field of electric power supply technology - a carrier automatic alarm and anti-stealing device, and the patent number is CN02229724.3. It is characterized in that it is composed of a high-frequency signal transmitter, a high-frequency wave trap, and a signal receiver. This set of devices has the characteristics of remote control carrier alarm and anti-stealing electricity, which can prevent users from entering the power line of the front section of the line column from the user's watt-hour meter. The upper wiring bypasses the user's watt-hour meter and enters the house to steal electricity. The disadvantage is that the manufacturing cost is high, it is difficult to promote to low-end users, and the reliability cannot be guaranteed. A utility model with the patent No. CN02228099.5 relates to an anti-stealing and remote meter reading device that can effectively prevent the phenomenon of stealing electricity and has auxiliary functions for remote meter reading. It is composed of a transformer and a pulse watt-hour meter. The low-voltage output terminal is connected to a current transformer, and the output terminal of the current transformer is connected to a power collector. The signal output terminal of the power collector is connected to the signal input terminal of the detection device through the low-voltage power line on the transformer, and the pulse watt-hour meter passes through The signal line is connected to the signal input end of the detection device, and the detection device transmits the alarm signal to the host through wireless signal transmission, which has the advantages of easy operation, good anti-theft effect, and saving manpower and material resources. But the disadvantage is that the structure is complex, the maintenance workload is large, and the cost is high.

Contents of the invention

The purpose of the present invention is to design an anti-stealing device with high reliability and low cost, so as to solve the common problem of stealing electricity in power supply enterprises.

The technical scheme of the present invention is as follows: adopt the key-lock mode to add the wireless radio frequency authentication mode, the radio frequency card technology is used as the main unlocking mode, once encountering the emergency situation that the electronic lock cannot be opened, adopt the backup unlocking method to open the electronic lock; As a data transmission intermediary, the instrument will send the unpacking records back to the control center. The anti-stealing unpacking recorder consists of five main parts, namely the control center (one server), reader, electronic key (RF card), electronic lock and data acquisition instrument. Through the presetting of the control center, the system can authorize the validity of the radio frequency card; the system user can only open the box within the authorized range with a valid card; the electronic lock system will record the time of each opening in detail; when an abnormal opening is detected The electronic lock system also has an alarm function for the condition of the box.

The electronic lock is the key equipment of the anti-stealing unpacking recorder. It is used to identify legal authorization and automatically store the unpacking records of the meter box, which is convenient for subsequent analysis and identification of illegal unpacking. The electronic lock system has high reliability, strong anti-interference ability, and has the function of one card. After a radio frequency card is authorized by the control center to obtain the password, multiple electronic locks can be opened.

The electronic lock has the function of reading the radio frequency card, and judges whether it is a legal card by reading the radio frequency card (electronic key). In order to prevent the cardholder from unrestricted opening of the box after the legal radio frequency card is lost, the system sets double restrictions, namely time limit and quantity limit. The time limit is determined in advance according to the needs of the power supply company; the quantity limit sets the maximum number of unboxings for each card after authorization for the system.

Under normal circumstances, the electronic lock obtains power from the mains system. At the same time, there is a lithium battery in the electronic lock as a backup. When the external power is lost, the lithium battery works; when there is an external power, the external power works. Dual power supplies ensure the reliability of the electronic lock.

The control center software system is used in conjunction with the reader to complete functions such as radio frequency card authorization, card lock, and card query. The data acquisition instrument mainly completes the collection of the electronic lock opening records, and uploads the collected data to the server. In the control center server, special software is installed to analyze the electricity theft risk of each meter box. The control center server has the ability to authorize the new card (to prevent the number of valid radio frequency cards from being insufficient after the radio frequency card is lost), read the data in the radio frequency card, cancel the authorization of the old card, designate a specific card to be invalid, and import the unpacking records stored in the electronic key to the The database has medium functions, and automatically identifies high-risk meter boxes and possible illegal openings, prompting the power supply company to focus on and check.

Description of drawings

Fig. 1 is a working principle diagram of the electronic lock of the present invention;

Fig. 2 is the radio frequency card operation flowchart of the present invention:

Detailed ways

There is a detection circuit inside the electronic lock. The function of the detection circuit is to detect whether there is a radio frequency card approaching. At regular intervals, the transmitting circuit will automatically transmit a signal. If there is a card approaching, the receiving circuit will receive the reflected signal and immediately notify the MCU to read the card. The reader reads and writes the radio frequency card under the drive of the MCU, reads the radio frequency card, and then returns the read data to the MCU in the form of Manchester code, and the MCU decodes it through the program; the decoded data on the radio frequency card and the data stored in the memory The parameters in the lock are checked, and according to the current time, determine whether it is a valid card; if it is a valid card, then start the motor drive circuit to unlock, and simultaneously download relevant information (unlock records) to the memory of the radio frequency card. Then bring it back to the control center and transmit it to the control center computer for statistical analysis.

The control center software is used in conjunction with the reader to complete the authorization and deauthorization functions of the radio frequency card. Once a card is authorized, the card has the right to unlock the designated electronic lock of the meter box within the specified time frame; once the card is revoked, the card loses the right to unlock the designated electronic lock. The control center can make blank and unused standard radio frequency cards into radio frequency cards, which can solve the problems of loss and damage of radio frequency cards. All radio frequency cards can only be authorized and revoked on the control center server.

The data acquisition instrument mainly completes the collection of the electronic lock opening records, and uploads the collected data to the server. When downloading data, hold the acquisition instrument close to the electronic lock, and after the data acquisition instrument passes the identity authentication, it will automatically download the data in the electronic lock to the acquisition instrument; it uses the USB port communication method to connect with the computer, which can easily upload the data into the database.

After the server successfully reads the information in the data acquisition instrument, the data in the data acquisition instrument should be automatically cleared to facilitate the next use of the acquisition instrument. All the records collected by the data collector can only be uploaded to the designated server and cannot be uploaded to other computers, which ensures the consistency and integrity of the data and avoids the unpacking records from being scattered in different computers. In order to ensure the integrity of the data, the data collected by the data collector has a large degree of redundancy. When the redundant data is read to the server, the server will automatically delete it.

In the present invention, there is no real-time communication between the electronic lock and the control center. After a radio frequency card is lost, the control center can revoke the authorization of the radio frequency card on the server, but the revocation information cannot be transmitted to the electronic lock in real time. Even if the unknown authorization is revoked, this card can still open a certain number of meter boxes. To this end, you can set the effective time of the radio frequency card, for example, one week, and the radio frequency card will automatically expire after one week. If you continue to use it, you need to authorize the card again. At the same time, in order to reduce the software risk analysis time, you can set unpacking during working hours and unpacking during non-working hours. For example, set 8:00-18:00 am as unpacking working hours, and set other periods as non-working hours. Unpacking during non-working hours is considered illegal. If the staff opens the box during non-working hours, special authorization must be obtained, otherwise it will be considered as illegal opening, so as to prevent internal personnel from colluding with electricity stealing users to steal electricity.

Advanced risk analysis software specially developed for the control center server to identify illegal unpacking. The system will automatically process these unlocking records within the expiration time as illegal data. If there are many illegal attempts in the unpacking records stored in the electronic lock (without actually opening it) or there is an RF card unlocking behavior that has been canceled by the control center, it indicates high-risk unpacking. For high-risk unpacking and some illegal unpacking, the risk analysis software system will automatically classify the risk levels of each meter box, and display the meter boxes with the risk of stealing electricity in real time to assist management and inquiry work.

Claims (10)

1. anti-electricity theft unpacking recording instrument based on wireless radio-frequency, it is characterized in that: being made up of five part hardware and data analysis software, is respectively control center's (one of server), reader, electronic lock, electron key (radio-frequency card) and data collecting instrument.

2. anti-electricity theft unpacking recording instrument according to claim 1 is characterized in that: control center and reader are used, and finish the function such as mandate, revocation, card inquiry of radio-frequency card.

3. anti-electricity theft unpacking recording instrument according to claim 1 is characterized in that: adopt radio-frequency card to unblank generally speaking, have only in case of emergency, just adopt the machinery mode of unblanking, mechanical key unblanks to open for disposable, open once after, mechanical lock is damaged automatically.

4. anti-electricity theft unpacking recording instrument according to claim 1, it is characterized in that: electronic lock back-up system " all-purpose card " function, promptly a key card can be opened a plurality of table casees after authorizing, and can limit the scope that each card is unpacked, and prevents that the related personnel from surmounting range of management and unpacking.

5. anti-electricity theft unpacking recording instrument according to claim 1 is characterized in that: anti-electricity theft unpacking recording instrument adopts the radio-frequency card of passive type.

6. anti-electricity theft unpacking recording instrument according to claim 1, it is characterized in that: all records that data collecting instrument collects, can only upload in the server of control center, can not upload to other computing machines, other computing machines do not possess the authority that empties data in the data collecting instrument yet.

7. anti-electricity theft unpacking recording instrument according to claim 2 is characterized in that: but the repeating data that data collecting instrument collects is fallen in control center server automatic fitration.

8. anti-electricity theft unpacking recording instrument according to claim 2 is characterized in that: control center has the function of open case record in the reading of data Acquisition Instrument, and system software can be unpacked and illegal unpacking according to open case record analysis, identification excessive risk

9. anti-electricity theft unpacking recording instrument according to claim 3 is characterized in that: the electronic lock power supply adopts the dual power supply form, promptly under normal circumstances obtains power supply from mains system, lithium battery is arranged as standby in the electronic lock simultaneously.

10. anti-electricity theft unpacking recording instrument according to claim 3, it is characterized in that: electronic lock can judge whether to be legal electron key by reading radio frequency card (electron key), and store legal unpacking and illegal unpacking, whether memory contents comprises the time, attempts unpacking radio-frequency card ID, successfully unpacks.

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