Data encryption control circuit

Abstract

The utility model discloses a data encryption control circuit, which is characterized in that the output end of an energy storage module is connected with a standby power supply control module, the first power supply input end of a dismantling trigger module is connected with a power supply, and the second power supply input end of the dismantling trigger module is connected with the output end of the standby power supply control module; the output end of the dismantling trigger module is connected with the input end of the power supply output module; the signal output end of the dismantling trigger module is connected with the control end of the power supply output module; the output end of the power supply output module is connected with the input end of the power supply output control module; the power supply detection end of the standby power supply control module and the power supply detection end of the power supply output control module are connected with a power supply. The data encryption control circuit of the utility model can detect the hardware dismounting condition through the trigger state of the dismounting trigger module and output an alarm signal no matter whether there is a power supply or not. And the standby power supply voltage is output to the outside under the condition of no power supply.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of industrial control safety, especially relates to a data encryption control circuit. BACKGROUND

[0002] In the field of industrial control safety, the core algorithm code running in the core board cannot be stolen, therefore, each manufacturer makes strict protection from management process, hardware and software design and other aspects, for example, in the process management, the personnel entering the core area are controlled by the communication equipment, and the software design uses the encryption dog or the built-in encryption chip mode.

[0003] In the existing data encryption control circuit, if the core board is powered off, the data encryption control circuit cannot normally operate, and after the external power supply of the core board is disconnected, the core board itself cannot perform data erasing and other security protection operations, and the core board is not accurate in judging whether to perform the security protection operation. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of data encryption control circuit, to solve the problem that current data encryption control circuit is strongly dependent on external power supply, data encryption control circuit cannot normally operate after power failure;The response speed of data encryption control circuit hardware is improved when being removed.

[0005] The utility model provides a kind of data encryption control circuit, comprising: comprising: removal trigger module, energy storage module, standby power supply control module, power supply output module and power supply output control module;

[0006] The output end of the energy storage module is connected with the input end of the standby power supply control module;The energy storage module is charged when power supply is connected, and discharged when the removal trigger module is triggered;The standby power supply control module is used to control the energy storage module to discharge when power supply is disconnected and the removal trigger module is triggered;

[0007] The first power supply input end of the removal trigger module is connected with power supply, the second power supply input end of the removal trigger module is connected with the output end of the standby power supply control module, and the output end of the removal trigger module is connected with the input end of the power supply output module;The signal output end of the removal trigger module is connected with the control end of the power supply output module;The removal trigger module is used to trigger when hardware is removed and output alarm control signal in signal output end;

[0008] The output end of the power supply output module is connected with the input end of the power supply output control module; the power supply output module is used for outputting a standby power supply voltage when the alarm control signal is received; and the power supply output control module is used for being turned on when the power supply is disconnected and the demolition trigger module is triggered.

[0009] The power supply detection end of the standby power supply control module and the power supply detection end of the power supply output control module are connected with the power supply.

[0010] Optionally, the data encryption control circuit further comprises an energy storage control module.

[0011] The input end of the energy storage control module is connected with the power supply.

[0012] The power supply detection end of the energy storage control module is connected with the power supply.

[0013] The output end of the energy storage control module is connected with the charging end of the energy storage module.

[0014] The energy storage control module is used for controlling the charging and discharging state of the energy storage module.

[0015] Optionally, the energy storage control module comprises a first light emitting diode, a second light emitting diode, a charging chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor and a first field effect transistor.

[0016] The positive pole of the first light emitting diode and the positive pole of the second light emitting diode are connected with the input end of the charging chip and serve as the input end of the energy storage control module.

[0017] The negative pole of the first light emitting diode is connected with the first end of the first resistor, and the second end of the first resistor is connected with the state end of the charging chip.

[0018] The negative pole of the second light emitting diode is connected with the first end of the third resistor, and the second end of the third resistor is connected with the power supply normal state end of the charging chip.

[0019] The first end of the first capacitor and the first end of the second resistor are connected with the current setting end of the charging chip, and the second end of the first capacitor and the second end of the second resistor are connected with the ground end of the charging chip and grounded.

[0020] The output end of the charging chip is connected with the first end of the fifth resistor, the first end of the second capacitor and the source of the first field effect tube, the second end of the fifth resistor is connected with the second end of the second capacitor, the first end of the sixth resistor and the feedback end of the charging chip;

[0021] The second end of the sixth resistor is connected with the first end of the fourth resistor and grounded, and the second end of the fourth resistor is connected with the enable end of the charging chip;

[0022] The gate of the first field effect tube is connected with the first end of the seventh resistor and connected with the power supply as the power supply detection end of the energy storage control module, and the second end of the seventh resistor is grounded;

[0023] The first end of the third capacitor is connected with the drain of the first field effect tube and the first power supply and serves as the first output end of the energy storage control module, and the second end of the third capacitor is grounded and serves as the second output end of the energy storage control module;

[0024] The voltage of the first power supply is less than the voltage of the power supply.

[0025] Optionally, the data encryption control circuit further comprises a buffer module.

[0026] The input end of the buffer module is connected with the power supply, and the output end of the buffer module is connected with the input end of the energy storage control module;

[0027] The buffer module is used for buffering and filtering the power supply.

[0028] Optionally, the buffer module comprises a first zener diode, a second zener diode, a fourth capacitor and a fifth capacitor.

[0029] The positive pole of the first zener diode serves as the input end of the buffer module, the negative pole of the first zener diode is connected with the first end of the second zener diode, the first end of the fourth capacitor and the first end of the fifth capacitor and serves as the output end of the buffer module;

[0030] The second end of the second zener diode, the second end of the fourth capacitor and the second end of the fifth capacitor are connected and grounded.

[0031] Optionally, the backup power supply control module comprises a second field effect tube, a third field effect tube and an eighth resistor.

[0032] The source of the second field effect tube is an input terminal of the standby power supply control module, the gate of the second field effect tube is connected with the first terminal of the eighth resistor and the gate of the third field effect tube and serves as a power supply detection terminal and a power supply connection terminal of the standby power supply control module;

[0033] The drain of the third field effect tube is connected with the drain of the second field effect tube.

[0034] The source of the third field effect tube serves as an output terminal of the standby power supply control module.

[0035] Optionally, the removal trigger module comprises a first diode, a ninth resistor, a tenth resistor, a micro switch and a third voltage stabilizing diode.

[0036] The anode of the first diode serves as a first power supply input terminal of the removal trigger module.

[0037] The cathode of the first diode is connected with the first terminal of the ninth resistor and the second terminal of the tenth resistor and serves as a second power supply input terminal of the removal trigger module.

[0038] The second terminal of the ninth resistor and the second terminal of the tenth resistor are connected with the first terminal of the micro switch, the second terminal of the micro switch is connected with the cathode of the third voltage stabilizing diode and serves as a signal output terminal and an output terminal of the removal trigger module.

[0039] Optionally, the power supply output module comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first triode, a fourth field effect tube, a sixth capacitor, a seventh capacitor, an eighth capacitor and a voltage stabilizer.

[0040] The first terminal of the eleventh resistor serves as an input terminal of the power supply output module, and the enable terminal of the voltage stabilizer serves as a control terminal of the power supply output module.

[0041] The second terminal of the eleventh resistor, the first terminal of the twelfth resistor and the base of the first triode are connected, the second terminal of the twelfth resistor is connected with the emitter of the first triode and grounded, the collector of the first triode is connected with the first terminal of the thirteenth resistor and the gate of the fourth field effect tube, the second terminal of the thirteenth resistor is connected with the source of the fourth field effect tube and a second power supply and a first power supply.

[0042] The drain of the fourth field effect tube is connected with the first terminal of the sixth capacitor, the first terminal of the seventh capacitor and the input terminal of the voltage stabilizer, and the second terminal of the sixth capacitor and the second terminal of the seventh capacitor are connected and grounded.

[0043] The noise reduction feedback end of the voltage stabilizer is connected with the first end of the eighth capacitor; and the second end of the eighth capacitor is connected with the ground end of the voltage stabilizer and grounded.

[0044] The output end of the voltage stabilizer serves as the output end of the power supply output module.

[0045] Optionally, the power supply output control module comprises a fourteenth resistor, a ninth capacitor, a tenth capacitor, a sixth field effect transistor and a seventh field effect transistor.

[0046] The source of the sixth field effect transistor serves as the input end of the power supply output control module; the gate of the sixth field effect transistor is connected with the first end of the fourteenth resistor and the gate of the seventh field effect transistor and connected with the power supply as the power supply detection end of the power supply output control module; and the second end of the fourteenth resistor is grounded.

[0047] The drain of the seventh field effect transistor is connected with the drain of the sixth field effect transistor.

[0048] The drain of the seventh field effect transistor is connected with the first end of the ninth capacitor and the first end of the tenth capacitor and serves as the output end of the power supply output control module; and the second ends of the ninth capacitor and the tenth capacitor are grounded.

[0049] Optionally, the energy storage module is a super capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0051] Figure 1 is a structural schematic diagram of a data encryption control circuit provided by the embodiments of the present application;

[0052] Figure 2 is a structural schematic diagram of another data encryption control circuit provided by the embodiments of the present application;

[0053] Figure 3 is a circuit diagram of an energy storage control module provided by the embodiments of the present application;

[0054] Figure 4 is a structural schematic diagram of another data encryption control circuit provided by the embodiments of the present application;

[0055] Figure 5The utility model discloses a kind of circuit diagrams of buffer module of energy storage control module provided in embodiments of the utility model;

[0056] Figure 6 The utility model discloses a kind of circuit diagrams of backup power supply control module provided in embodiments of the utility model;

[0057] Figure 7 The utility model discloses a kind of circuit diagrams of dismantling trigger module provided in embodiments of the utility model;

[0058] Figure 8 The utility model discloses a kind of circuit diagrams of power supply output module provided in embodiments of the utility model;

[0059] Figure 9 The utility model discloses a kind of circuit diagrams of power supply output control module provided in embodiments of the utility model;

[0060] Figure 10 The utility model discloses a kind of circuit diagrams of data encryption control circuit provided in embodiments of the utility model. DETAILED DESCRIPTION

[0061] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, apparently, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the scope of the utility model protection.

[0062] It should be noted that the terms "first", "second" and the like in the description and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or modules does not have to be limited to the clearly listed steps or modules, but can include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices.

[0063] Figure 1 It is the structural schematic diagram of data encryption control circuit provided in embodiments of the utility model, the data encryption control circuit of the utility model embodiment is applied to the hardware of core board Anti-dismantling, such as Figure 1As shown, the data encryption control circuit comprises a removal trigger module 103, an energy storage module 101, a backup power supply control module 102, a power supply output module 104 and a power supply output control module 105.

[0064] The output end of the energy storage module 101 is connected with the input end of the backup power supply control module 102, the first power supply input end of the removal trigger module 103 is connected with the power supply 106, the second power supply input end of the removal trigger module 103 is connected with the output end of the backup power supply control module 102, the output end of the removal trigger module 103 is connected with the input end of the power supply output module 104; the signal output end of the removal trigger module 103 is connected with the control end of the power supply output module 104; the output end of the power supply output module 104 is connected with the input end of the power supply output control module 105; the power supply detection end of the backup power supply control module 102 and the power supply detection end of the power supply output control module 105 are connected with the power supply 106.

[0065] The backup power supply control module 102 is used for controlling the energy storage module 101 to discharge when the power supply 106 is disconnected and the removal trigger module 103 is triggered; the removal trigger module 103 is used for triggering when the hardware is removed and outputting an alarm control signal at the signal output end; the energy storage module 101 is used for charging when the power supply 106 is connected and discharging when the removal trigger module 103 is triggered; the power supply output module 104 is used for outputting a backup power supply voltage when receiving the alarm control signal; and the power supply output control module 105 is used for conducting when the power supply 106 is disconnected and the removal trigger module 103 is triggered.

[0066] Specifically, in the data encryption control circuit, when the hardware is removed, the removal trigger module 103 is triggered according to the effect generated when the hardware is removed and outputs an alarm control signal at the signal output end. The core board connected with the signal output end of the removal trigger module 103 receives the alarm control signal of the removal trigger module 103, and performs corresponding safety operation according to the alarm control signal. For example, the removal trigger module 103 comprises a vibration detection switch element, when the hardware is removed, the vibration detection switch element in the removal trigger module 103 is turned on or turned off, so that the removal trigger module 103 outputs a certain potential level signal. After the core board receives the level signal, it performs corresponding preset safety operation. Optionally, the core board performs data erasing signal according to the alarm control signal.

[0067] The removal trigger module 103 has two power supply inputs, the first power supply input is connected with the power supply 106, the removal trigger module 103 and the core board use the same power supply 106 to perform corresponding removal triggering and signal output. The second power supply input of the removal trigger module 103 is connected with the output end of the backup power supply control module 102. The input end of the backup power supply control module 102 is connected with the output end of the energy storage module 101, and the power supply detection end of the backup power supply control module 102 is connected with the power supply 106. When the backup power supply control module 102 is disconnected from the power supply 106 and the removal trigger module 103 is triggered, the backup power supply control module 102 is turned on, and the discharge of the energy storage module 101 can supply power to the removal trigger module 103. Finally, when the power supply 106 is disconnected, the data encryption control circuit can still normally realize the function. When the power supply 106 normally supplies power to the core board and the data encryption control circuit, the backup power supply control module 102 is in a disconnected state, and the energy storage module does not supply power to the removal trigger module 103.

[0068] The power supply 106 not only supplies power to the data encryption control circuit, but also supplies power to the core board. When the hardware circuit is executed to be removed, the core board needs to perform corresponding safety operations to protect data; when the power supply 106 is disconnected, the core board also loses power and cannot perform safety operations. In the data encryption control circuit of the embodiment of the utility model, the power supply output module 104 is connected with the removal trigger module 103, when the removal trigger module 103 is triggered, the power supply output module 104 can output a backup power voltage, and the backup power voltage is provided to the core board to support the core board to perform data safety operations to protect data.

[0069] The power supply output control module 105 is connected between the output ends of the power supply output module 104, and the power supply detection end of the power supply output control module 105 is connected with the power supply 106. The power supply output control module 105 detects the state of the power supply 106: when the power supply 106 normally exists, the hardware of the power supply output control module 105 does not turn on, and the backup power voltage generated in the power supply output module 104 due to the triggering of the removal trigger module 103 cannot be output through the output end of the power supply output control module 105.

[0070] When the power supply 106 stops supplying power to the data encryption control circuit and the core board, the power supply detection end of the power supply output control module 105 detects that the power supply 106 is powered off, the power supply output control module 105 can be turned on at the input end and the output end, so that the backup power voltage output by the power supply output module 104 can supply power to the core board, so that the core board performs data safety operations.

[0071] The two power supply input ends of the removal triggering module ensure that the removal triggering module can normally realize the output of the alarm control signal when the hardware is removed, whether the power supply is connected or not. The power supply output module is connected with the power supply to detect the state of the power supply. When the power supply is powered off, the power supply output control module is turned on to output the standby power voltage generated by the power supply output module. The power supply output module and the power supply output control module realize that the standby power voltage is output to the core board for power supply when the removal triggering module is triggered and the power supply is powered off. The data encryption control circuit in the embodiment of the utility model realizes that the hardware removal operation can still be detected after the power supply is powered off, and the core board can be powered to perform corresponding data security operation.

[0072] On the basis of the above embodiment, Figure 2 is another data encryption control circuit structure schematic view provided by the utility model embodiment, Figure 3 is a circuit diagram of an energy storage control module provided by the utility model embodiment, as shown in Figure 2 , 3 The data encryption control circuit further comprises an energy storage control module 107; the input end of the energy storage control module 107 is connected with the power supply 106; the power supply detection end of the energy storage control module 107 is connected with the power supply 106; the output end of the energy storage control module 107 is connected with the charging end of the energy storage module 101; and the energy storage control module 107 is used for controlling the charging and discharging state of the energy storage module 101.

[0073] The energy storage control module 107 comprises a first light emitting diode LED1, a second light emitting diode LED2, a charging chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a first field effect transistor Q1; the positive pole of the first light emitting diode LED1 and the positive pole of the second light emitting diode LED2 are connected with the input end IN of the charging chip and serve as the input end of the energy storage control module 107; the negative pole of the first light emitting diode LED1 is connected with the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the state end STAT of the charging chip; the negative pole of the second light emitting diode LED2 is connected with the first end of the third resistor R3, and the second end of the third resistor R3 is connected with the power normal state end / PG of the charging chip; the first end of the first capacitor C1 and the first end of the second resistor R2 are connected with the current setting end ISET of the charging chip, and the second end of the first capacitor C1 and the second end of the second resistor R2 are connected with the ground end GND of the charging chip and grounded; the output end of the charging chip is connected with the first end of the fifth resistor R5, the first end of the second capacitor C2 and the source pole of the first field effect transistor Q1, the second end of the fifth resistor R5 is connected with the second end of the second capacitor C2, the first end of the sixth resistor R6 and the feedback end FB of the charging chip; the second end of the sixth resistor R6 is connected with the first end of the fourth resistor R4 and grounded, and the second end of the fourth resistor R4 is connected with the enable end / CE of the charging chip; the gate pole of the first field effect transistor Q1 is connected with the first end of the seventh resistor R7 and serves as the power supply detection end of the energy storage control module 107; the second end of the seventh resistor R7 is grounded; the first end of the third capacitor C3 is connected with the drain pole of the first field effect transistor Q1 and serves as the first output end of the energy storage control module, and the second end of the third capacitor C3 is grounded and serves as the second output end of the energy storage control module.

[0074] Specifically, the input end of the energy storage control module 107 is connected with the power supply 106, and the output end of the energy storage control module 107 is connected with the charging end of the energy storage module 101. The energy storage module 101 is controlled to charge and discharge by the energy storage control module 107.

[0075] As Figure 3As shown, the input end IN of the charging chip is used as the input end of the energy storage control module 107, and is used for connecting the power supply 106 to adjust the size of the charging current.

[0076] Optionally, the model of the charging chip U1 is BQ25173DSGR; the model of the first light emitting diode LED1 and the second light emitting diode LED2 is LED0603; the resistance value of the first resistor R1, the third resistor R3 and the fourth resistor R4 is 1KΩ; the resistance value of the second resistor R2 is 15KΩ; the resistance value of the fifth resistor R5 is 681KΩ; the resistance value of the sixth resistor R6 is 180KΩ; and the capacitance value of the first capacitor C1 and the second capacitor C2 is 100nF.

[0077] The gate of the first field effect transistor Q1 is connected with the first end of the seventh resistor R7; the zero port I0 is connected with the power supply 106, and the zero port I0 is the power supply detection end of the energy storage control module 107; and the second end of the seventh resistor R7 is grounded. The source and the drain of the first field effect transistor Q1 are connected in series between the charging chip U1 and the output end of the energy storage control module 107. The first field effect transistor Q1 is an NMOS tube, when the power supply 106 is disconnected, the source potential of the first field effect transistor Q1 is pulled down, then the source and the drain of the first field effect transistor Q1 are disconnected, and the connection between the energy storage module 101 and the charging chip is disconnected, so that the energy storage module 101 will not be consumed by the circuit in the energy storage control module 107.

[0078] Optionally, the resistance value of the seventh resistor R7 is 100KΩ; the capacitance value of the third capacitor C3 is 100uF; and the model of the first field effect transistor Q1 is PMV40UN2R.

[0079] On the basis of the above embodiment, Figure 4 is a structural schematic diagram of another data encryption control circuit provided by the embodiment of the utility model, Figure 5 is a circuit diagram of a buffer module provided by the embodiment of the utility model, like Figure 4 、 5As shown, the data encryption control circuit further comprises a buffer module 108; an input end of the buffer module 108 is connected with the power supply 106, and an output end of the buffer module 108 is connected with an input end of the energy storage control module 107; the buffer module 108 is used for buffering and filtering the power supply 106.

[0080] The buffer module 108 comprises a first voltage stabilizing diode Z1, a second voltage stabilizing diode Z2, a fourth capacitor C4 and a fifth capacitor C5; a positive pole of the first voltage stabilizing diode Z1 is used as an input end of the buffer module 108, a negative pole of the first voltage stabilizing diode Z1 is connected with a first end of the second voltage stabilizing diode Z2, a first end of the fourth capacitor C4 and a first end of the fifth capacitor C5 and is used as an output end of the buffer module 108; a second end of the second voltage stabilizing diode Z2, a second end of the fourth capacitor C4 and a second end of the fifth capacitor C5 are connected and grounded.

[0081] Specifically, the buffer module 108 is connected between the power supply 106 and the energy storage control module 107, and is used for buffering and filtering the current input by the power supply.

[0082] As shown in the figure, Figure 5 The first voltage stabilizing diode Z1 stabilizes the current input by the power supply of the buffer module 108; meanwhile, the first voltage stabilizing diode Z1 and the second voltage stabilizing diode Z2 form a voltage stabilizing network.

[0083] The fourth capacitor C4 and the fifth capacitor C5 play a filtering role and smooth fluctuations and noises in the input voltage.

[0084] Optionally, the first voltage stabilizing diode Z1 is of SS34 type; the second voltage stabilizing diode Z2 is of SMBJ5.0CA-E3 / 52 type; the fourth capacitor C4 has a capacitance value of 10uF; and the fifth capacitor C5 has a capacitance value of 100nF.

[0085] On the basis of the above embodiment, Figure 6 is a circuit diagram of a backup power supply control module provided by the embodiment of the utility model, as shown in the figure, Figure 6As shown, the standby power supply control module comprises: a second field effect tube Q2, a third field effect tube Q3 and an eighth resistor R8; the source of the second field effect tube Q2 is an input end of the standby power supply control module 102, the gate of the second field effect tube Q2 is connected with the first end of the eighth resistor R8 and the gate of the third field effect tube Q3 and serves as a power supply detection end of the standby power supply control module 102; the drain of the third field effect tube Q3 and the drain of the second field effect tube Q2 are connected; and the source of the third field effect tube Q3 serves as an output end of the standby power supply control module 102.

[0086] Specifically, in the standby power supply control module 102, the gates of the second field effect tube Q2 and the third field effect tube Q3 are connected and serve as the power supply detection end, that is, the first port I1 is the power supply detection end of the standby power supply control module, and the power supply 106 is connected at the first port I1. The second field effect tube Q2 and the third field effect tube Q3 are PMOS tubes, when the power supply 106 at the first port I1 is disconnected, the potential of the gates of the second field effect tube Q2 and the third field effect tube Q3 is pulled down, then the drain and the source of the second field effect tube Q2 and the third field effect tube Q3 are turned on, and the input end and the output end of the standby power supply control module 102 are turned on. When the power supply 106 is disconnected, the energy storage module 101 can discharge to the direction of the standby power supply control module 102. When the power supply 106 at the first port I1 is not disconnected, the potential of the gates of the second field effect tube Q2 and the third field effect tube Q3 is pulled up, then the drain and the source of the second field effect tube Q2 and the third field effect tube Q3 are turned off, and the energy storage module 101 cannot discharge to the direction of the standby power supply control module 102.

[0087] Optionally, the model of the second field effect tube Q2 and the third field effect tube Q3 is PMV32UP215; and the resistance value of the eighth resistor R8 is 100KΩ.

[0088] On the basis of the above embodiments, Figure 7 is a circuit diagram of the removal trigger module provided by the utility model embodiment, like Figure 7 As shown, the removal trigger module comprises: a first diode D1, a ninth resistor R9, a tenth resistor R10, a micro switch SW1 and a third voltage stabilizing diode Z3; the anode of the first diode D1 serves as a first power supply input end of the removal trigger module 103; the cathode of the first diode D1 is connected with the first end of the ninth resistor R9 and the second end of the tenth resistor R10 and serves as a second power supply input end of the removal trigger module 103; the second end of the ninth resistor R9, the second end of the tenth resistor R10 and the first end of the micro switch SW1 are connected; the second end of the micro switch SW1 is connected with the cathode of the third voltage stabilizing diode Z3 and serves as a signal output end and an output end of the removal trigger module 103.

[0089] Specifically, asFigure 7 As shown, the second port I2 is the first power input end of the removal trigger module 103, the first power supply is input from the second port I2, wherein the first power supply is the power supply 106; the third port I3 is the second power input end of the removal trigger module 103, the second power supply is input from the third port I3, wherein the second power supply is the power supply discharged from the energy storage module 101 in the direction of the standby power control module 102. When the power supply 106 is not disconnected, the standby power control module 102 connected by the third port I3 is disconnected, and the energy storage module 101 cannot supply power to the removal trigger module 103; but the power supply 106 supplies power to the removal trigger module 103 through the second port I2. When the power supply 106 is disconnected, the standby power control module 102 is turned on, and the energy storage module 101 supplies power to the removal trigger module 103 through the standby power control module 102.

[0090] When the hardware is removed, the micro switch SW1 is turned on, and at this time, due to the presence of the third voltage stabilizing diode Z3, the voltage at the fourth port I4 is clamped near the stable voltage value of the third voltage stabilizing diode Z3.

[0091] For example, the fourth port I4 is connected to the core board as the signal output end of the removal trigger module 103, and when the removal trigger signal is sent to the core board, the core board performs a data security operation. Optionally, the data security operation is that the core board erases the core code data.

[0092] The fifth port I5 is the output end of the removal trigger module 103.

[0093] Optionally, the model of the first diode D1 is RFN1VWM2STR, the resistance values of the ninth resistor R9 and the tenth resistor R10 are 510 ohms, the signal of the micro switch SW1 is JL010, and the model of the third voltage stabilizing diode Z3 is BZT52C3V3S-7-F.

[0094] On the basis of the above embodiments, Figure 8 is a circuit diagram of a power supply output module provided by the embodiment of the utility model, like Figure 8As shown, the power supply output module includes: an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a first triode T1, a fourth field effect tube Q4, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a voltage stabilizer U2; a first end of the eleventh resistor R11 is the input end of the power supply output module 104, and an enable end EN of the voltage stabilizer is the control end of the power supply output module 104; a second end of the eleventh resistor R11, a first end of the twelfth resistor R12 and a base of the first triode T1 are connected; a second end of the twelfth resistor R12 is connected with an emitter of the first triode T1 and grounded; a collector of the first triode T1 is connected with a first end of the thirteenth resistor R13 and a gate of the fourth field effect tube Q4; a second end of the thirteenth resistor R13 is connected with a source of the fourth field effect tube Q4 and the first power supply; a drain of the fourth field effect tube Q4 is connected with a first end of the sixth capacitor C6, a first end of the seventh capacitor C7 and an input end IN of the voltage stabilizer; a second end of the sixth capacitor C6 and a second end of the seventh capacitor C7 are connected and grounded; a noise reduction feedback end NR / FB of the voltage stabilizer is connected with a first end of the eighth capacitor C8; a second end of the eighth capacitor C8 is connected with a ground end GND of the voltage stabilizer and grounded; and an output end OUT of the voltage stabilizer is the output end of the power supply output module 104.

[0095] Specifically, the output end of the removal trigger module 103 is connected with the input end of the backup power supply output module, and the input end of the backup power supply output module is the sixth port I6. After the removal trigger module 103 is triggered, the potential of the sixth port I6 is pulled high, the base of the first triode T1 is pulled high, the collector and the emitter of the first triode T1 are turned on, the collector of the first triode T1 is pulled low, the gate of the fourth field effect tube Q4 is also pulled low, and finally the source and the drain of the fourth field effect tube Q4 are turned on. The first power supply at the eighth port I8 is input to the input end IN of the voltage stabilizer through the source and the drain of the fourth field effect tube Q4.

[0096] The signal output end of the removal trigger module 103 is connected with the control end of the backup power supply output module, and the control end of the backup power supply output module is the seventh port I7. After the removal trigger module 103 is triggered, the potential of the enable end EN of the voltage stabilizer is pulled high, and the voltage stabilizer U2 starts to work. After the voltage stabilizer U2 inputs the first power supply, the output end OUT of the voltage stabilizer outputs the backup power supply voltage.

[0097] Optionally, the resistance values of the eleventh resistor R11, the twelfth resistor R12 and the thirteenth resistor R13 are 10KΩ; the model of the first triode T1 is PMBT2222A215; the model of the fourth field effect tube Q4 is PMV32UP215; the capacitance values of the sixth capacitor C6 and the eighth capacitor C8 are 100nF; the capacitance value of the seventh capacitor C7 is 10uF; the model of the voltage stabilizer U2 is TPS73733DRVR; and the standby power supply voltage is 3.3V.

[0098] On the basis of the above-mentioned embodiments, Figure 9 is a circuit diagram of a power supply output control module provided by the utility model embodiments, as Figure 9 shown, the power supply output control module comprises: the fourteenth resistor R14, the ninth capacitor C9, the tenth capacitor C10, the sixth field effect tube Q6 and the seventh field effect tube Q7; the source of the sixth field effect tube Q6 is the input end of the power supply output control module 105, the gate of the sixth field effect tube Q6 is connected with the first end of the fourteenth resistor R14 and the gate of the seventh field effect tube Q7 and is the power supply detection end of the power supply output control module 105; the second end of the fourteenth resistor R14 is grounded; the drain of the seventh field effect tube Q7 is connected with the drain of the sixth field effect tube Q6; the drain of the seventh field effect tube Q7 is connected with the first end of the ninth capacitor C9 and the first end of the tenth capacitor C10 and is the output end of the power supply output control module 105; the second ends of the ninth capacitor C9 and the tenth capacitor C10 are grounded.

[0099] Specifically, the gates of the sixth field effect tube Q6 and the seventh field effect tube Q7 are connected with the power supply 106, that is, the ninth port I9 is connected with the power supply 106.When the power supply 106 is disconnected, the potential at the gates of the sixth field effect tube Q6 and the seventh field effect tube Q7 is pulled low, and the source and the drain of the sixth field effect tube Q6 and the seventh field effect tube Q7 are turned on, so that the standby power supply voltage input by the input end of the power supply output control module 105 is output through the source and the drain of the sixth field effect tube Q6 and the seventh field effect tube Q7.When the power supply 106 is not disconnected, the potential at the gates of the sixth field effect tube Q6 and the seventh field effect tube Q7 is continuously high, and the source and the drain of the sixth field effect tube Q6 and the seventh field effect tube Q7 are always in the disconnected state, so that the power supply output control module 105 will not output the standby power supply voltage.The tenth port I10 is the output end of the power supply output control module 105.The tenth port I10 is connected with the power supply end of the core board, and when the power supply 106 is disconnected, it indicates that the power supply of the core board is also disconnected, so that the standby power supply voltage output by the tenth port I10 can supply power to the core board to support the core board to perform corresponding data security operations.

[0100] On the basis of the above-mentioned embodiments, Figure 10It is a circuit diagram of a data encryption control circuit provided by the embodiment of the utility model, as shown in the figure, in the data encryption control circuit, the energy storage module 101 is a super capacitor. Figure 10

[0101] Specifically, the eleventh port I11 in the buffer module 108 is connected with the power supply to buffer and filter the input power supply. The power supply signal processed by the buffer module 108 is accepted in the energy storage control module 107, and is output to the energy storage module 101 after being processed by the charging chip U1 in the energy storage control module 107. The zero port I0 in the energy storage control module is connected with the power supply. When the power supply is disconnected, the source and the drain of the first field effect tube Q1 are disconnected; when the power supply is not disconnected, the source and the drain of the first field effect tube Q1 are connected. The energy storage element BT1 is a super capacitor. In the standby power supply control module 102, the first port I1 is connected with the power supply. When the power supply is disconnected, the source and the drain of the second field effect tube Q2 and the third field effect tube Q3 are connected; when the power supply is not disconnected, the source and the drain of the second field effect tube Q2 and the third field effect tube Q3 are disconnected. In the removal trigger module 103, the two power supply ends of the removal trigger module 103 are respectively connected with the working power supply and the standby power supply control module 102, and the second port I2 is connected with the power supply. When the power supply is not disconnected, the removal trigger module 103 is powered through the second port I2. When the power supply is disconnected, the second port I2 is powered off, and the energy storage module 101 and the standby power supply control module 102 supply power to the removal trigger module 103. In the removal trigger module 103, when the hardware is removed, the micro switch SW1 is triggered, and the fourth port I4 outputs an alarm control signal due to the clamping output of the third voltage stabilizing diode Z3, so that the core board performs corresponding safety operation. The alarm control signal also controls the power supply control module to output the standby power supply voltage. In the power supply output control module 105, the ninth port I9 is connected with the working power supply. When the power supply is not disconnected, the drain and the source of the seventh field effect tube Q7 and the sixth field effect tube Q6 are disconnected, and the standby power supply voltage cannot be output by the power supply output control module 105; when the power supply is disconnected, the drain and the source of the seventh field effect tube Q7 and the sixth field effect tube Q6 are connected, and the power supply output control module 105 outputs to the core board through the tenth port I10 to supply power to the core board.

[0102] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the utility model can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the utility model can be achieved, and the present document does not limit this.

[0103] ​The specific embodiments described above do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A data encryption control circuit, characterized by comprising: The application relates to a data encryption control circuit. The data encryption control circuit comprises a removal trigger module, an energy storage module, a standby power supply control module, a power supply output module and a power supply output control module. An output end of the energy storage module is connected with an input end of the standby power supply control module; the energy storage module is used for charging when a power supply is connected and discharging when the removal trigger module is triggered; the standby power supply control module is used for controlling the energy storage module to discharge when the power supply is disconnected and the removal trigger module is triggered. A first power supply input end of the removal trigger module is connected with the power supply, a second power supply input end of the removal trigger module is connected with an output end of the standby power supply control module, an output end of the removal trigger module is connected with an input end of the power supply output module; a signal output end of the removal trigger module is connected with a control end of the power supply output module; the removal trigger module is used for triggering when hardware is removed and outputting an alarm control signal at the signal output end. An output end of the power supply output module is connected with an input end of the power supply output control module. The power supply output module is used for outputting a standby power supply voltage when the alarm control signal is received; the power supply output control module is used for being turned on when the power supply is disconnected and the removal trigger module is triggered. Power supply detection ends of the standby power supply control module and the power supply output control module are connected with the power supply.

2. The data encryption control circuit according to claim 1, characterized by The data encryption control circuit further comprises an energy storage control module. An input end of the energy storage control module is connected with the power supply. A power supply detection end of the energy storage control module is connected with the power supply. An output end of the energy storage control module is connected with a charging end of the energy storage module. The energy storage control module is used for controlling charging and discharging states of the energy storage module.

3. The data encryption control circuit of claim 2, wherein, The energy storage control module comprises a first light emitting diode, a second light emitting diode, a charging chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a second capacitor, a third capacitor and a first field effect transistor. A positive pole of the first light emitting diode and a positive pole of the second light emitting diode are connected with an input end of the charging chip and serve as input ends of the energy storage control module. A negative pole of the first light emitting diode is connected with a first end of the first resistor, and a second end of the first resistor is connected with a state end of the charging chip. A negative pole of the second light emitting diode is connected with a first end of the third resistor, and a second end of the third resistor is connected with a power supply normal state end of the charging chip. A first end of the first capacitor and a first end of the second resistor are connected with a current setting end of the charging chip, and a second end of the first capacitor and a second end of the second resistor are connected with a grounding end of the charging chip and grounded. An output end of the charging chip is connected with a first end of the fifth resistor, a first end of the second capacitor and a source pole of the first field effect transistor, a second end of the fifth resistor is connected with a second end of the second capacitor, a first end of the sixth resistor and a feedback end of the charging chip. The second end of the sixth resistor is connected with the first end of the fourth resistor and grounded, and the second end of the fourth resistor is connected with the enable end of the charging chip; The gate of the first field effect tube is connected with the first end of the seventh resistor and serves as the power supply detection end of the energy storage control module; and the second end of the seventh resistor is grounded. The first end of the third capacitor is connected with the drain of the first field effect tube and serves as the first output end of the energy storage control module, and the second end of the third capacitor is grounded and serves as the second output end of the energy storage control module.

4. The data encryption control circuit of claim 2, wherein, The data encryption control circuit further comprises a buffer module. The input end of the buffer module is connected with the power supply, and the output end of the buffer module is connected with the input end of the energy storage control module. The buffer module is used for buffering and filtering the power supply.

5. The data encryption control circuit of claim 4, wherein, The buffer module comprises a first voltage stabilizing diode, a second voltage stabilizing diode, a fourth capacitor, and a fifth capacitor. The anode of the first voltage stabilizing diode serves as the input end of the buffer module, the cathode of the first voltage stabilizing diode is connected with the first end of the second voltage stabilizing diode, the first end of the fourth capacitor, and the first end of the fifth capacitor and serves as the output end of the buffer module. The second end of the second voltage stabilizing diode, the second end of the fourth capacitor, and the second end of the fifth capacitor are connected and grounded.

6. The data encryption control circuit of claim 1, wherein, The standby power supply control module comprises a second field effect tube, a third field effect tube, and an eighth resistor. The source of the second field effect tube serves as the input end of the standby power supply control module, the gate of the second field effect tube is connected with the first end of the eighth resistor and the gate of the third field effect tube and serves as the power supply detection end of the standby power supply control module. The drain of the third field effect tube is connected with the drain of the second field effect tube. The source of the third field effect tube serves as the output end of the standby power supply control module.

7. The data encryption control circuit of claim 1, wherein, The removal trigger module comprises a first diode, a ninth resistor, a tenth resistor, a micro switch, and a third voltage stabilizing diode. The anode of the first diode serves as the first power supply input end of the removal trigger module. The cathode of the first diode is connected with the first end of the ninth resistor and the second end of the tenth resistor and serves as the second power supply input end of the removal trigger module. The second end of the ninth resistor and the second end of the tenth resistor are connected with the first end of the micro switch; the second end of the micro switch is connected with the cathode of the third voltage stabilizing diode and serves as the signal output end and the output end of the removal trigger module.

8. The data encryption control circuit of claim 1, wherein, The power supply output module comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first triode, a fourth field effect tube, a sixth capacitor, a seventh capacitor, an eighth capacitor, and a voltage stabilizer. The first end of the eleventh resistor serves as the input end of the power supply output module, and the enable end of the voltage stabilizer serves as the control end of the power supply output module. The second end of the eleventh resistor, the first end of the twelfth resistor and the base of the first triode are connected; the second end of the twelfth resistor is connected with the emitter of the first triode and grounded; the collector of the first triode is connected with the first end of the thirteenth resistor and the gate of the fourth field effect tube; the second end of the thirteenth resistor is connected with the source of the fourth field effect tube and the first power supply; The drain of the fourth field effect tube is connected with the first end of the sixth capacitor, the first end of the seventh capacitor and the input end of the voltage stabilizer; the second end of the sixth capacitor and the second end of the seventh capacitor are connected and grounded; The noise reduction feedback end of the voltage stabilizer is connected with the first end of the eighth capacitor; the second end of the eighth capacitor is connected with the ground end of the voltage stabilizer and grounded; The output end of the voltage stabilizer serves as the output end of the power supply output module.

9. The data encryption control circuit of claim 1, wherein, The power supply output control module comprises a fourteenth resistor, a ninth capacitor, a tenth capacitor, a sixth field effect tube and a seventh field effect tube; The source of the sixth field effect tube serves as the input end of the power supply output control module; the gate of the sixth field effect tube is connected with the first end of the fourteenth resistor and the gate of the seventh field effect tube and serves as the power supply detection end of the power supply output control module; the second end of the fourteenth resistor is grounded; The drain of the seventh field effect tube is connected with the drain of the sixth field effect tube; The drain of the seventh field effect tube is connected with the first end of the ninth capacitor and the first end of the tenth capacitor and serves as the output end of the power supply output control module; the second ends of the ninth capacitor and the tenth capacitor are grounded.

10. The data encryption control circuit of claim 1, wherein, The energy storage module is a super capacitor.

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