CN205827529U

CN205827529U - A kind of CPU card table

Info

Publication number: CN205827529U
Application number: CN201620660545.XU
Authority: CN
Inventors: 秦庚福; 赵勇; 寇龙德
Original assignee: QINGDAO BOMING GAS EQUIPMENT MANUFACTURING Co Ltd
Current assignee: QINGDAO BOMING GAS EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2016-06-27
Filing date: 2016-06-27
Publication date: 2016-12-21
Anticipated expiration: 2026-06-27

Abstract

This utility model provides a kind of CPU card table, power circuit, and ESAM read/write circuit, CPU card read/write circuit, valve controling circuit, system power supply and low-voltage detection circuit, DLL circuit, counting interface circuit and the liquid crystal interface circuit being connected with MCU control unit circuit is controlled including MCU；Described ESAM read/write circuit includes that ESMA module, the first audion, the second audion, the first resistance are to the 5th resistance.This utility model uses ESMA module, audion and the ESAM read/write circuit of resistance composition, simple in construction, is hardly damaged, and isolation is good, and reliability is high, and memory function is excellent, increases the service life greatly.

Description

A kind of CPU card table

Technical field

This utility model relates to a kind of intelligent meter, especially a kind of CPU card table.

Background technology

Logic encryption card is the memory card using cipher control logical block.Increase on the basis of non-encrypted storage card Encryption logic, encryption logic is open to outside by the data in effect pin mode protection card, but is low The safeguard protection of level, it is impossible to preventing malice is attacked.

CPU card is also referred to as smart card, is a kind of IC-card with microprocessor chip.With micro-place in integrated circuit in card Reason device CPU, memory element (including random access memory ram, program memory ROM (FLASH), user data memory EEPROM) And chip operating system COS.CPU card equipped with COS is equivalent to a microcomputer, not only has data storage function, Also there is the function such as command process and data security protecting.

CPU card possesses the advantages such as Information Security is higher, with better function compared with logic encryption card, and it will become future The development trend of IC-card industry.

For being upgraded to CPU card table by General Logic encrypting IC card table, the safety grades of data can not only be improved, and For logic security IC card table, CPU card table capacity is bigger, can realize including combustion gas forward purchasing tolerance and by gas control merit Can, display function, power-off protection function (memory function), tolerance accumulation function, information feedback function, prompt facility, warning and The functions such as safeguard function, addendum function and blacklist, and all-purpose card can be realized easily with financial sector, it is possible to conveniently realize One card multilist application, more can meet all kinds of demands of user, towards development safe and reliable, convenient.But it is of the prior art In CPU card table, the read/write circuit between ESAM module and main mouth control unit is more complicated, and reliability is low, in actually used process In, it is easily damaged.For this reason, it is necessary to design the CPU card table of a kind of improvement.

Utility model content

The purpose of this utility model is to provide a kind of simple in construction, security is high, be hardly damaged and reliability is high CPU card table.

Realize a kind of CPU card table of this utility model purpose, control power circuit, and and MCU control unit including MCU ESAM read/write circuit, CPU card read/write circuit, valve controling circuit, system power supply and low-voltage detection circuit, the volume that circuit connects Journey interface circuit, counting interface circuit and liquid crystal interface circuit；Described ESAM read/write circuit includes ESMA module, the first audion T6, the second audion T7, the first resistance R21 to the 5th resistance R25；Wherein the base stage of the first audion T6 passes through the first resistance R21 with MCU controls power circuit and is connected, and its emitter stage is connected with power vd D, and its colelctor electrode passes through the second resistance R22 ground connection；The The base stage of two audion T7 controls power circuit by the 3rd resistance R23 with MCU and is connected, its emitter stage and clock interface CLKOUT Connecting, its colelctor electrode passes through the 4th resistance R24 ground connection；The VCC mouth of ESMA module and the colelctor electrode of the first audion T6 connect, The colelctor electrode of the CLK mouth of ESMA module and the second audion T7 connects, and the I/O mouth of ESMA module is by the 5th resistance R25 and the The colelctor electrode of one audion T6 connects.

Also include controlling the buzzer cue circuit that is connected of power circuit with MCU, and be connected with valve controling circuit Valve interface circuit.

Described MCU controls power circuit and uses PIC16LF1947 chip.

Having the beneficial effect that of CPU card table of the present utility model:

CPU card table of the present utility model, uses ESMA module, audion and the ESAM read/write circuit of resistance composition, structure Simply, being hardly damaged, isolation is good, and reliability is high, and memory function is excellent, increases the service life greatly.

Accompanying drawing explanation

Fig. 1 is the theory diagram of CPU card table of the present utility model.

Fig. 2 is the circuit diagram of MCU control unit circuit in CPU card table of the present utility model.

Fig. 3 is the circuit diagram of ESAM read/write circuit in CPU card table of the present utility model.

Fig. 4 is the circuit diagram of CPU card read/write circuit in CPU card table of the present utility model.

Fig. 5 is the circuit diagram of valve controling circuit in CPU card table of the present utility model.

Fig. 6 is system power supply and the circuit diagram of low-voltage detection circuit in CPU card table of the present utility model.

Fig. 7 is the circuit diagram of DLL circuit in CPU card table of the present utility model.

Fig. 8 is the circuit diagram counting interface circuit in CPU card table of the present utility model.

Fig. 9 is the circuit diagram of valve interface circuit in CPU card table of the present utility model.

Figure 10 is the circuit diagram of liquid crystal interface circuit in CPU card table of the present utility model.

Figure 11 is the circuit diagram of buzzer cue circuit in CPU card table of the present utility model.

Detailed description of the invention

Embodiment of the present utility model is as follows: as it is shown in figure 1, CPU card table of the present utility model, control power supply including MCU Circuit (Fig. 2), and be connected with MCU control unit circuit ESAM read/write circuit (Fig. 3), CPU card read/write circuit (Fig. 4), valve Gate control circuit (Fig. 5), system power supply and low-voltage detection circuit (Fig. 6), DLL circuit (Fig. 7), counting interface circuit (Fig. 8) with liquid crystal interface circuit (Figure 10).

Refering to shown in Fig. 2, control the circuit diagram of power circuit for MCU, use PIC16LF1947 chip.

Refering to shown in Fig. 3, described ESAM read/write circuit include ESMA module, the first audion T6, the second audion T7, One resistance R21 to the 5th resistance R25；Wherein the base stage of the first audion T6 controls power circuit by the first resistance R21 Yu MCU Connecting, its emitter stage is connected with power vd D, and its colelctor electrode passes through the second resistance R22 ground connection；The base stage of the second audion T7 is passed through 3rd resistance R23 with MCU controls power circuit and is connected, and its emitter stage is connected with clock interface CLKOUT, and its colelctor electrode passes through the Four resistance R24 ground connection；The VCC mouth of ESMA module and the colelctor electrode of the first audion T6 connect, the CLK mouth of ESMA module and second The colelctor electrode of audion T7 connects, and the I/O mouth of ESMA module is by the colelctor electrode of the 5th resistance R25 and the first audion T6 even Connect.

Owing to using ESMA module, audion and the ESAM read/write circuit of resistance composition, simple in construction, it is hardly damaged, every Good from property, reliability is high.

This utility model also includes controlling the buzzer cue circuit (Figure 11) that power circuit is connected, and and valve with MCU The valve interface circuit (Fig. 9) that gate control circuit connects.

CPU card table of the present utility model, simple in construction, memory function is excellent, increases the service life greatly.

Embodiment described above is only to be described preferred implementation of the present utility model, not to this practicality Novel scope is defined, and is designing under spirit premise without departing from this utility model, this area ordinary skill technical staff couple Various deformation that technical solutions of the utility model are made and improvement, all should fall into the guarantor that claims of the present utility model determine In the range of protecting.

Claims

1. a CPU card table, it is characterised in that: include that MCU controls power circuit, and be connected with MCU control unit circuit ESAM read/write circuit, CPU card read/write circuit, valve controling circuit, system power supply and low-voltage detection circuit, DLL electricity Road, counting interface circuit and liquid crystal interface circuit；Described ESAM read/write circuit include ESMA module, the first audion, the two or three Pole pipe, the first resistance are to the 5th resistance；Wherein the base stage of the first audion controls power circuit even by the first resistance with MCU Connecing, its emitter stage is connected with power vd D, and its colelctor electrode passes through the second resistance eutral grounding；The base stage of the second audion is by the 3rd electricity Hindering and be connected with MCU control power circuit, its emitter stage is connected with clock interface CLKOUT, and its colelctor electrode is connect by the 4th resistance Ground；The VCC mouth of ESMA module and the colelctor electrode of the first audion connect, the CLK mouth of ESMA module and the current collection of the second audion Pole connects, and the I/O mouth of ESMA module is connected by the colelctor electrode of the 5th resistance and the first audion.

CPU card table the most according to claim 1, it is characterised in that: also include controlling, with MCU, the buzzing that power circuit is connected Device cue circuit, and the valve interface circuit being connected with valve controling circuit.

CPU card table the most according to claim 1, it is characterised in that: described MCU controls power circuit and uses PIC16LF1947 chip.