Pre-payment meter key management system

A technology for a key management system and a prepaid meter, applied in the field of a prepaid meter key management system, can solve the problems of incompatibility or incompatibility of application cards that cannot control different regions, high price, and low usage of the master card. , to achieve the effect of easy operation, ensuring confidentiality, and reducing the number of

Inactive Publication Date: 2009-01-07
SHENZHEN STAR INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] The existing general key management system will distinguish between the main card and the application card. The main card and the application card use different types of cards. The use of the main card is

Method used

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  • Pre-payment meter key management system
  • Pre-payment meter key management system
  • Pre-payment meter key management system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0065] see figure 1 , the prepaid meter key management system of the present invention includes a root key card management subsystem, a master key card management subsystem, and an application card management subsystem.

[0066] The root key card management subsystem is responsible for managing the root key card generation equipment and issuing root key cards. The root key card contains various root keys of the entire prepaid meter key management system. The root key card management The subsystem runs in the top-level department of the card issuing management unit. All the root keys of the system are stored on the root key card, and the relevant root keys are distributed to the corresponding master key card through the corresponding master key card management subsystem. .

[0067] The master key card management subsystem is responsible for managing the master key card generation equipment. After all the keys on the root key card are added to the area number dispersion factor ...

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Abstract

The invention provides a key management system of a prepayment meter, which comprises a root key card management subsystem, a master key card management subsystem, and an application card management subsystem; the root key card management subsystem issues a root key card; after the master key card management subsystem adds area identity dissipation factors to the root key management card, the root key card educes the master key card for specially issuing work according to the area dissipation; the application card management subsystem imports the master key card in the application card. The key management system of the prepayment device has the advantages that: a three-level manner is adopted to issue and deliver the key to guarantee the confidentiality; the key management system of the prepayment meter keeps independent running from the management system of selling electricity, water, gas, and the like; the parent card and the application card have the same type; as the area factors are added to the keys, whether the application card in various areas is compatible or not, the system can be flexibly controlled.

Description

technical field [0001] The invention relates to a key management system, in particular to a prepaid meter key management system. Background technique [0002] At present, most of the electricity consumption for civil lighting and industry is measured by traditional induction watt-hour meters. The management method of electricity consumption is manual meter reading, which records the monthly electricity consumption. Increase, this method of energy metering management shows many shortcomings, the most important is the difficulty of collecting electricity charges, the user's first use of electricity means that the electric industry management department needs to prepay the electricity charge, and then charge the user, and due to various reasons, currently It is difficult to collect electricity bills on time, and there are even a large number of cases where electricity bills cannot be received, causing huge economic losses to the electricity bill management department, and the r...

Claims

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Application Information

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IPC IPC(8): G07F7/10
Inventor 李志华
Owner SHENZHEN STAR INSTR
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