Hydropower station gate coding induction system based on RFID

Abstract

The utility model provides a hydropower station gate coding induction system based on RFID, which comprises a plurality of RFID electronic tags, an RFID read-write module, a control module and a communication module, and is characterized in that the plurality of RFID electronic tags are respectively arranged on gate bodies; the RFID read-write module is arranged on the door machine body, the RFID read-write module is in communication connection with the RFID electronic tag, the input end of the control module is electrically connected with the output end of the RFID read-write module, the output end of the control module is electrically connected with the input end of the communication module, the output end of the communication module is electrically connected with the input end of the upper computer, and the input end of the upper computer is electrically connected with the input end of the control module. The gate coding module is used for transmitting read gate coding information to the upper computer; by means of the RFID read-write module and the RFID electronic tag installed on the gate body, gate coding information can be automatically read, complexity and errors of manual operation are reduced, the coding information verified to be correct is transmitted to the upper computer through the communication module, and management of the gate is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water and electricity station gate coding identification, especially to a water and electricity station gate coding induction system based on RFID. BACKGROUND

[0002] With the rapid growth of China's economy, the role of the hydropower station in the national energy supply system is becoming more and more important. As a key part of green energy, the hydropower station not only provides reliable power resources, but also promotes the improvement of energy structure and the improvement of environmental quality. In the design and operation of the hydropower station, various types of gates as the core components of water flow control play an indispensable role. These gates include but are not limited to water inlets, flood outlets, tail water outlets and other categories, each of which bears different responsibilities and is distributed in different parts of the power station, together building a complex and precise hydraulic system. In order to ensure the efficient operation and safety of the hydropower station, it is crucial to realize accurate coding and identification of these gates. Gate coding identification not only helps staff quickly find and control specific gates, but also provides a solid information foundation for routine maintenance, fault detection and emergency handling.

[0003] A hydropower station remote safety monitoring system with publication number CN206667195U, comprising: industrial computer, wear and tear sensor, drop in place sensor, travel limiter, gate opening encoder, load sensor, gate opening load sampling instrument, hydraulic hoist and hydraulic pin shaft device; the gate opening encoder and the load sensor are respectively connected with the gate opening load sampling instrument, and the wear and tear sensor, the drop in place sensor, the travel limiter, the gate opening load sampling instrument, the hydraulic hoist and the hydraulic pin shaft device are respectively connected with the industrial computer.

[0004] In the prior art, the reading method of gate coding information is difficult, time-consuming and prone to error, and there is a lack of effective transmission of correct coding information to the host computer for management in time, resulting in low gate management efficiency and low accuracy. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a kind of water and electricity station gate coding induction system based on RFID, and the RFID read-write module and the RFID electronic tag installed on the gate body can automatically read gate coding information, reduce the tedious and error of manual operation, and transmit the correct coding information to the host computer through the communication module, to facilitate the management of gate.

[0006] The technical scheme of the utility model is implemented as follows: the utility model provides a water and electricity station gate coding induction system based on RFID, which comprises a plurality of RFID electronic tags, an RFID read-write module, a control module and a communication module, wherein,

[0007] The plurality of RFID electronic tags are arranged on the gate bodies respectively;

[0008] The RFID read-write module is arranged on the gate machine body and is arranged on the side close to the RFID electronic tag, and the RFID read-write module is in communication connection with the RFID electronic tag and is used for reading the gate coding information corresponding to each RFID electronic tag;

[0009] The input end of the control module is electrically connected with the output end of the RFID read-write module, the output end of the control module is electrically connected with the input end of the communication module, the output end of the communication module is electrically connected with the input end of the host computer, and the gate coding information read is transmitted to the host computer.

[0010] On the basis of the above technical scheme, preferably, the distance between the RFID read-write module and the RFID electronic tag is less than the induction distance of the RFID read-write module, and the gate machine body moves along the setting direction of the plurality of gate bodies.

[0011] On the basis of the above technical scheme, preferably, the communication module comprises a wireless communication unit and an interface communication unit, wherein,

[0012] The wireless communication unit is electrically connected with the control module and is used for transmitting the gate coding information read to the host computer through wireless transmission;

[0013] The interface communication unit is electrically connected with the control module and is used for transmitting the gate coding information read to the host computer through an interface.

[0014] On the basis of the above technical scheme, preferably, the 485 interface communication unit comprises a 485 communication chip U8, a resistor R14, a capacitor C27, a resistor R7, a resistor R9, a resistor R12, a resistor R13, a voltage stabilizing diode D2, a voltage stabilizing diode D3, a fuse F1 and a fuse F2, wherein the first pin and the fourth pin of the 485 communication chip U8 are electrically connected with the control module, the second pin and the third pin of the 485 communication chip U8 are connected with one end of the resistor R14, the other end of the resistor R14 is connected with a power supply, the eighth pin of the 485 communication chip U8 is electrically connected with an external power supply end and the capacitor C27 respectively, the other end of the capacitor C27 is grounded, the seventh pin of the 485 communication chip U8 is electrically connected with one end of the resistor R7 and one end of the resistor R12 respectively, the other end of the resistor R7 is electrically connected with an external power supply end, the other end of the resistor R12 is electrically connected with one end of the voltage stabilizing diode D2 and one end of the fuse F1 respectively, the other end of the voltage stabilizing diode D2 is grounded, the sixth pin of the 485 communication chip U8 is electrically connected with one end of the resistor R9 and one end of the resistor R13 respectively, the other end of the resistor R9 is grounded, the other end of the resistor R13 is electrically connected with one end of the voltage stabilizing diode D3 and one end of the fuse F2 respectively, the other end of the voltage stabilizing diode D3 is grounded, and the fuse F2 and the fuse F1 are electrically connected with an upper computer.

[0015] On the basis of the above technical scheme, preferably, the wireless communication unit comprises a 4G communication chip U4, wherein the input end of the 4G communication chip U4 is electrically connected with the output end of the control module, and the chip model of the 4G communication chip U4 is ATK-IDM750C.

[0016] On the basis of the above technical scheme, preferably, the reset module and the alarm module are further comprised, wherein,

[0017] the output end of the reset module is electrically connected with the input end of the control module, and is used for controlling system reset;

[0018] the input end of the alarm module is electrically connected with the output end of the control module, and is used for issuing sound to remind whether induction is successful.

[0019] On the basis of the above technical scheme, preferably, the reset module comprises a resistor R2, a capacitor C6 and a button switch KEY1, wherein one end of the resistor R2 is connected with a power supply end, the other end of the resistor R2 is electrically connected with one end of the capacitor C6 and one end of the button switch KEY1 respectively and is electrically connected with the input end of the control module, the other end of the capacitor C6 is grounded in common with the other end of the button switch KEY1.

[0020] On the basis of the above technical scheme, preferably, the alarm module comprises a resistor R21, a triode Q5 and a loudspeaker LKEY1, wherein one end of the resistor R21 is electrically connected with the output end of the control module, the other end of the resistor R21 is electrically connected with the base of the triode Q5, the collector of the triode Q5 is electrically connected with an external power supply end, the emitter of the triode Q5 is electrically connected with one end of the loudspeaker LKEY1, and the other end of the loudspeaker LKEY1 is grounded.

[0021] On the basis of the above technical scheme, preferably, further comprising a clock module and a time reference module, the output end of the clock module is electrically connected with the input end of the control module for providing a system clock, and the output end of the time reference module is electrically connected with the input end of the control module for providing a time reference.

[0022] On the basis of the above technical scheme, preferably, the clock module comprises a capacitor C7, a capacitor C8, a resistor R6 and a crystal oscillator X1, wherein the capacitor C7 and one end of the capacitor C8 are commonly grounded, the other end of the capacitor C7 is electrically connected with the resistor R6, the crystal oscillator X1 and the input end of the control module respectively, and the other end of the capacitor C8 is electrically connected with the other end of the resistor R6, the other end of the crystal oscillator X1 and the input end of the control module respectively.

[0023] The time reference module comprises a capacitor C9, a capacitor C10 and a crystal oscillator X2, wherein the capacitor C9 and one end of the capacitor C10 are commonly grounded, the other end of the capacitor C9 is electrically connected with the crystal oscillator X2 and the input end of the control module respectively, and the other end of the capacitor C10 is electrically connected with the other end of the crystal oscillator X2 and the input end of the control module respectively.

[0024] The RFID-based gate coding induction system of the hydropower station has the following beneficial effects compared with the prior art:

[0025] (1) The RFID read-write module and the RFID electronic tag installed on the gate body can automatically read the gate coding information, reduce the tediousness and errors of manual operation, and transmit the correct coding information to the upper computer through the communication module, thereby facilitating the management of the gate.

[0026] (2) By installing the RFID read-write module on the door machine body, the door machine body moves along the setting direction of the plurality of gate bodies, and the RFID electronic tag information on each gate can be read in turn without additional movement, thereby improving the overall efficiency of the system and reducing the time and resources required for reading the gate information.

[0027] (3) The communication module of the wireless communication unit and the 485 interface communication unit can flexibly adapt to different application scenarios and requirements, thereby improving the reliability and efficiency of the system. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The principle block diagram of the RFID water power station gate coding induction system of the present application;

[0030] Figure 2 The control module circuit diagram of the RFID water power station gate coding induction system of the present application;

[0031] Figure 3 The wireless communication unit circuit diagram of the RFID water power station gate coding induction system of the present application;

[0032] Figure 4 The 485 interface communication unit circuit diagram of the RFID water power station gate coding induction system of the present application;

[0033] Figure 5 The RFID read-write module circuit diagram of the RFID water power station gate coding induction system of the present application;

[0034] Figure 6 The circuit diagram of the alarm module of the RFID water power station gate coding induction system of the present application;

[0035] Figure 7 The reset module circuit diagram of the RFID water power station gate coding induction system of the present application;

[0036] Figure 8 The clock module circuit diagram of the RFID water power station gate coding induction system of the present application;

[0037] Figure 9 The time reference module circuit diagram of the RFID water power station gate coding induction system of the present application;

[0038] Figure 10 The installation schematic diagram of the RFID read-write module of the RFID water power station gate coding induction system of the present application in the gate machine body;

[0039] Figure 11 The relative installation schematic diagram of the RFID read-write module and the RFID electronic tag of the RFID water power station gate coding induction system of the present application;

[0040] Figure 12 RFID reading and writing module and RFID electronic tag induction authentication process schematic diagram of the RFID's water power station gate coding induction system of the utility model;

[0041] Figure 13 RFID identification authentication Cmp calculation process instance of the RFID's water power station gate coding induction system of the utility model. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0043] As shown in Figure 1 , Figure 2 and Figure 5 , the utility model discloses a water power station gate coding induction system based on RFID, which comprises a plurality of RFID electronic tags 1, an RFID reading and writing module 2, a control module 3 and a communication module 4, wherein the plurality of RFID electronic tags 1 are arranged on each gate body; the RFID reading and writing module 2 is arranged on the door machine body and close to the side of the RFID electronic tag 1, and the RFID reading and writing module 2 is in communication connection with the RFID electronic tag 1, which is used to read the gate coding information corresponding to each electronic RFID electronic tag 1; the input end of the control module 3 is electrically connected with the output end of the RFID reading and writing module 2, the output end of the control module 3 is electrically connected with the input end of the communication module 4, and the output end of the communication module 4 is electrically connected with the input end of the upper computer, which is used to transmit the read gate coding information to the upper computer.

[0044] It should be noted that the RFID electronic tag 1 is installed in the range of the gate slot, the range of the gate slot includes the periphery of the gate slot and the gate body, the installation position of the RFID electronic tag 1 can be determined in the two ranges, when the RFID electronic tag 1 is selected to be installed on the periphery of the gate slot, the RFID reader-writer is installed at a position convenient for identification by the fixed plate, a support can be arranged in the gate slot area, or on the guardrail of the gate slot, when the installation position is selected in the range of the gate body, the RFID reader-writer module 2 is installed on the grab beam body after waterproof treatment, the RFID electronic tag 1 is installed on the upper end of the gate body after waterproof treatment, the installation position of the RFID reader-writer module 2 is in the vertical space of the sensing of the RFID electronic tag 1 without metal shielding; when multiple gate bodies are involved in the gate slot, the RFID reader-writer module 2 is installed on the grab beam body, and the RFID electronic tag 1 is preferably installed on the gate body; when only a single gate body is involved in the gate slot, the installation positions of the RFID reader-writer module 2 and the RFID electronic tag 1 can be selected as any of the above.

[0045] Each RFID electronic tag 1 stores corresponding gate code information, and the code information is unique and used to identify different gates; the RFID reader-writer module 2 is arranged on the door machine body and close to the side of the RFID electronic tag to ensure that the tag information can be accurately read; when the gate moves to the vicinity of the RFID reader-writer module 2, the RFID reader-writer module 2 communicates with the RFID electronic tag 1 through wireless radio frequency signals, the RFID reader-writer module 2 activates the RFID electronic tag 1 by sending radio frequency signals and reads the gate code information stored in the RFID electronic tag 1; the input end of the control module 3 is electrically connected with the output end of the RFID reader-writer module 2, used to receive the gate code information read by the RFID reader-writer module; the control module 3 checks the received information, and the information that passes the check is transmitted to the communication module 4 through the output end; the communication module 4 transmits the information to the upper computer through wired or wireless mode for gate management.

[0046] Specifically, the control module 3 in the embodiment is STM32F405RGT6.

[0047] In the embodiment, the RFID reader-writer module 2 and the RFID electronic tag 1 installed on the gate body can automatically read the gate code information, reduce the tediousness and errors of manual operation, and can transmit the gate state information in real time, which is helpful to timely discover and handle abnormal situations, and the number of RFID electronic tags 1 and RFID reader-writer modules 2 can be increased as needed to adapt to the gate management needs of different scales and complexities of the hydropower station.

[0048] As Figures 10-11As shown, the distance between the RFID read-write module 2 and the RFID electronic tag 1 in the embodiment is less than the sensing distance of the RFID read-write module 2, and the door machine body moves along the setting direction of the plurality of gate bodies.

[0049] It should be noted that, since the distance between the RFID read-write module 2 and the RFID electronic tag 1 is less than the sensing distance of the read-write module, it is ensured that when the door machine body moves to the vicinity of a certain gate, the RFID read-write module 2 can reliably read the RFID electronic tag 1 information on the gate, reducing the possibility of reading failure due to too far distance or signal interference. Moreover, the door machine body moves along the setting direction of the plurality of gate bodies, which can sequentially read the RFID electronic tag 1 information on each gate without additional movement or adjustment, thereby improving the overall efficiency of the system and reducing the time and resources required to read the gate information.

[0050] The communication module 4 in the embodiment includes a wireless communication unit 41 and a 485 interface communication unit 42, wherein the wireless communication unit 41 is electrically connected with the control module 3, for wirelessly transmitting the read gate code information to the upper computer; the 485 interface communication unit 42 is electrically connected with the control module 3, for transmitting the read gate code information to the upper computer through the 485 interface.

[0051] It should be noted that, by setting the wireless communication unit 41 and the 485 interface communication unit 42, the system can flexibly adapt to different application scenarios and requirements, thereby improving the reliability and efficiency of the system.

[0052] As Figure 4As shown, in a preferred embodiment, the 485 interface communication unit 42 in this embodiment includes a 485 communication chip U8, resistor R14, capacitor C27, resistor R7, resistor R9, resistor R12, resistor R13, Zener diode D2, Zener diode D3, fuse F1, and fuse F2. The first and fourth pins of the 485 communication chip U8 are electrically connected to the control module 3. The second and third pins of the 485 communication chip U8 are connected to one end of resistor R14, and the other end of resistor R14 is connected to a power supply. The eighth pin of the 485 communication chip U8 is electrically connected to an external power supply and capacitor C27. The other end of capacitor C27 is grounded. The seventh pin of the 485 communication chip U8 is electrically connected to one end of resistors R7 and R12 respectively. The other end of resistor R7 is electrically connected to the external power supply. The other end of resistor R12 is electrically connected to one end of Zener diode D2 and fuse F1 respectively. The other end of Zener diode D2 is grounded. The sixth pin of the 485 communication chip U8 is electrically connected to one end of resistors R9 and R13 respectively. The other end of resistor R9 is grounded. The other end of resistor R13 is electrically connected to one end of Zener diode D3 and fuse F2 respectively. The other end of Zener diode D3 is grounded. Both fuses F2 and F1 are electrically connected to the host computer.

[0053] Specifically, the model number of the 485 communication chip U8 is SP3485EEN.

[0054] It should be noted that when the control module 3 needs to send data, it sets the DE pin to a high level to activate the 485 communication chip U8 and inputs the data to the 485 communication chip U8 through the DI pin. The 485 communication chip U8 sends the data to the host computer in differential signal form through the A and B pins. When the host computer sends data, the control module 3 sets the RE pin to a low level to activate the 485 communication chip U8. The 485 communication chip U8 receives the differential signal from the A and B pins and converts it into a single-ended signal, which is then output to the control module 3 through the RO pin.

[0055] like Figure 3 As shown, in a preferred embodiment, the wireless communication unit 41 in this embodiment includes a 4G communication chip U4, wherein the input terminal of the 4G communication chip U4 is electrically connected to the output terminal of the control module 3, and the chip model of the 4G communication chip U4 is ATK-IDM750C.

[0056] This embodiment also includes a reset module 5 and an alarm module 6. The output terminal of the reset module 5 is electrically connected to the input terminal of the control module 3 and is used to control system reset. The input terminal of the alarm module 6 is electrically connected to the output terminal of the control module 3 and is used to issue an audible alert to indicate whether the sensing was successful.

[0057] It should be noted that the reset module 5 sends a reset signal to the control module 3 when the system is abnormal or needs to be restarted, so that the system returns to the initial state; the alarm module 6 reminds the user through sound when the operation is successful or failed, which helps the user to know the running state of the system in time.

[0058] As shown in Figure 6 , as a preferred embodiment, the reset module 5 in the embodiment includes a resistor R2, a capacitor C6 and a push-button switch KEY1, wherein one end of the resistor R2 is connected to the power supply end, the other end of the resistor R2 is electrically connected with the capacitor C6 and one end of the push-button switch KEY1 respectively, and is electrically connected with the input end of the control module 3, and the other end of the capacitor C6 and the other end of the push-button switch KEY1 are commonly grounded.

[0059] It should be noted that when the system needs to be manually reset, the user can press the push-button switch KEY1, which will cause the capacitor C6 to discharge through the push-button switch KEY1 and generate a reset pulse, which is then transmitted to the reset pin of the control module 3 to trigger the reset function of the system; when the push-button switch KEY1 is released, the capacitor C6 will be charged again, preparing for the next reset operation. The reset module 5 can ensure that the system can be quickly and reliably reset to the initial state when needed, thereby improving the stability and reliability of the system.

[0060] As shown in Figure 7 , as a preferred embodiment, the alarm module 6 in the embodiment includes a resistor R21, a triode Q5 and a loudspeaker LKEY1, wherein one end of the resistor R21 is electrically connected with the output end of the control module 3, the other end of the resistor R21 is electrically connected with the base of the triode Q5, the collector of the triode Q5 is electrically connected with the external power supply end, the emitter of the triode Q5 is electrically connected with one end of the loudspeaker LKEY1, and the other end of the loudspeaker LKEY1 is grounded.

[0061] It should be noted that when the control module 3 needs to issue a sound reminder, a high-level signal is sent to the resistor R21 through the output end, which is sent to the base of the triode Q5 after current limiting by the resistor R21. When the base of the triode Q5 receives a high enough voltage, it will enter a saturated state and be turned on. At this time, the resistance between the collector and the emitter becomes very small, and the current can flow from the collector to the emitter through the triode Q5. When the current passes through the loudspeaker LKEY1, it will generate a magnetic field and drive the diaphragm of the loudspeaker to vibrate, thereby producing sound. After successful identification, the "identification successful" sound is output, and after identification failure or timeout, the "identification failed" sound is output to remind the user.

[0062] The embodiment also includes a clock module 7 and a time reference module 8, an output end of the clock module 7 is electrically connected with an input end of the control module 3, for providing a system clock, an output end of the time reference module 8 is electrically connected with an input end of the control module 3, for providing a time reference.

[0063] It should be noted that the clock module 7 and the time reference module 8 provide a stable time reference and system clock for the system, ensuring the normal operation and accurate time control of the system.

[0064] As shown in Figure 8 , as a preferred embodiment, the clock module 7 in the embodiment includes a capacitor C7, a capacitor C8, a resistor R6 and a crystal oscillator X1, wherein one end of the capacitor C7 and the capacitor C8 is commonly grounded, the other end of the capacitor C7 is electrically connected with the resistor R6, the crystal oscillator X1 and the input end of the control module 3 respectively, the other end of the capacitor C8 is electrically connected with the other end of the resistor R6, the other end of the crystal oscillator X1 and the input end of the control module 3 respectively;

[0065] As shown in Figure 9 , as a preferred embodiment, the time reference module 8 in the embodiment includes a capacitor C9, a capacitor C10 and a crystal oscillator X2, wherein one end of the capacitor C9 and the capacitor C10 is commonly grounded, the other end of the capacitor C9 is electrically connected with the crystal oscillator X2 and the input end of the control module 3 respectively, the other end of the capacitor C10 is electrically connected with the other end of the crystal oscillator X2 and the input end of the control module 3 respectively.

[0066] As shown in Figure 12 , in addition, the control module 3 passes through a radio frequency security authentication mechanism in the identification process, and uploads the identified gate number information to the upper computer after verification, wherein the security processing process of the inductive identification process includes the following steps:

[0067] KEY1, when the RFID read-write module 2 is in the inductive identification process with the RFID electronic tag 1, the RFID read-write module 2 identifies the RFID electronic tag 1 before, generates a random number n , adopts a logical operation method to calculate W , X , the value of X is the left half binary ID_L of the tag identifier and the random number W XOR operation, and the value of X is the left half binary ID_L of the tag identifier and the random number n cyclic shift permutation operation;

[0068] S2, when the value of W , X is calculated, it is sent to the RFID electronic tag 1, and when the RFID electronic tag 1 receives W ,X the value of the random number generated by the RFID read-write module 2 is calculated reversely m , m the value of the random number is calculated reversely by W XOR operation with the tag identifier, and the left half of the binary of the identifier is cyclically shifted and replaced with the random number X to obtain m 1, the obtained result is compared with the random number X of the KEY1 step; m and X are compared;

[0069] S3, if the comparison result is not equal, the sensing recognition fails, and the gate number information cannot be sent to the upper computer, if the comparison result is the same, the RFID electronic tag 1 generates a random number n , the value of Y , Z is calculated, Y is obtained by XOR operation of the tag identifier ID and the random number m , and then XOR operation with the random number n , Z is obtained by XOR operation of the random number n and the shared secret value K , and then cyclically shifted and replaced with the random number m , and the value of Y , Z is sent to the read-write module;

[0070] S4, after the read-write module receives the value of Y , Z , the value of Y , ID and m is calculated reversely to obtain n , and the shared secret value K is used to calculate reversely to obtain Z 1, which is compared with the value calculated in the RFID electronic tag, and the reverse expression is:

[0071] ;

[0072] S5, if the comparison value is not the same, the recognition process is terminated, if the comparison result is the same, the RFID electronic tag 1 is cyclically shifted and replaced with m and n , and the calculation result R is sent to the RFID electronic tag 1, when the RFID electronic tag 1 receives the calculation result, the same principle is used to calculate R 1 , R 1 The calculation formula is as follows:

[0073]

[0074] Will R 1 The value and R A comparison is made; if they are different, the sensing and identification process is terminated; if they are the same, the shared secret value is updated. K 1 =Cmp( K , n The gate number information is used as a shared secret value for the next RFID reader / writer module 2 and tag identification and authentication process. Then the tag feeds back the stored gate number information to the RFID reader / writer module 2 to complete the gate number identification.

[0075] like Figure 13 As shown, an example of cyclic movement Cmp(F, G) is as follows: Assuming F and G are both binary data of length 8, where F = 11101010 and G = 00101101, the process of calculating Cmp(F, G) is as follows:

[0076] Calculate the number of 1s in F and G. If the number of 1s in F is greater than the number of 1s in G, then shift the G sequence to the left by the number of 1s in F. Otherwise, shift the F sequence to the right by the number of 1s in G.

[0077] If the number of 1s in F is greater than the number of 1s in G, permutation is performed on the G1 sequence. Iterating through F from left to right, when the i-th bit of F is 0, the i-th bit of G is permuted (0 becomes 1, 1 becomes 0); when the i-th bit of F is 1, the i-th bit of G1 remains unchanged. If the number of 1s in F is less than the number of 1s in G, permutation is performed on F1. Iterating through G from left to right, when the i-th bit of G is 0, the i-th bit of F1 is permuted (0 becomes 1, 1 becomes 0); when the i-th bit of G is 1, the i-th bit of F1 remains unchanged.

[0078] Working principle:

[0079] When the gate moves near the RFID reader / writer module 2, the RFID reader / writer module 2 communicates with the RFID electronic tag 1 via radio frequency signals. The RFID reader / writer module 2 will emit radio frequency signals to activate the RFID electronic tag 1 and read the gate code information stored in the RFID electronic tag 1. The input terminal of the control module 3 is electrically connected to the output terminal of the RFID reader / writer module 2 to receive the gate code information read by the reader / writer module. The control module 3 verifies the received information. After the verification is correct, the information is transmitted to the communication module 4 through its output terminal. The communication module 4 transmits this information to the host computer for gate management via wired or wireless means.

[0080] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An RFID-based water power station gate code induction system, characterized in that, Including several RFID electronic tags (1), RFID read-write module (2), control module (3) and communication module (4), wherein, Several RFID electronic tags (1) are arranged on each gate body; RFID read-write module (2) is arranged on the door machine body, and is arranged close to the side of RFID electronic tag (1), and RFID read-write module (2) is communicated with RFID electronic tag (1), for reading each electronic RFID electronic tag (1) corresponding gate code information; The input end of control module (3) is electrically connected with the output end of RFID read-write module (2), the output end of control module (3) is electrically connected with the input end of communication module (4), and the output end of communication module (4) is electrically connected with the input end of host computer, for transmitting the gate code information read to the host computer.

2. The RFID based water power gate encoding sensing system as claimed in claim 1, wherein: The distance between the RFID read-write module (2) and the RFID electronic tag (1) is less than the induction distance of the RFID read-write module (2), and the door machine body moves along the setting direction of the plurality of gate bodies.

3. The RFID based water power gate encoding sensing system as claimed in claim 1 wherein: The communication module (4) includes a wireless communication unit (41) and a 485 interface communication unit (42), wherein, The wireless communication unit (41) is electrically connected with the control module (3), for transmitting the gate code information read to the host computer by wireless transmission; The 485 interface communication unit (42) is electrically connected with the control module (3), for transmitting the gate code information read to the host computer by 485 interface.

4. The RFID based water power gate encoding sensing system as claimed in claim 3, wherein: The 485 interface communication unit (42) includes 485 communication chip U8, resistance R14, capacitor C27, resistance R7, resistance R9, resistance R12, resistance R13, voltage stabilizing diode D2, voltage stabilizing diode D3, fuse F1 and fuse F2, wherein the first pin and the fourth pin of the 485 communication chip U8 are electrically connected with the control module (3), the second pin and the third pin of the 485 communication chip U8 are accessed to one end of the resistance R14, the other end of the resistance R14 is accessed to the power supply, the eighth pin of the 485 communication chip U8 is electrically connected with the external power supply end and the capacitor C27 respectively, the other end of the capacitor C27 is grounded, the seventh pin of the 485 communication chip U8 is electrically connected with the resistance R7 and the resistance R12 respectively, the other end of the resistance R7 is electrically connected with the external power supply end, the other end of the resistance R12 is electrically connected with the voltage stabilizing diode D2 and the fuse F1 respectively, the other end of the voltage stabilizing diode D2 is grounded, the sixth pin of the 485 communication chip U8 is electrically connected with the resistance R9 and the resistance R13 respectively, the other end of the resistance R9 is grounded, the other end of the resistance R13 is electrically connected with the voltage stabilizing diode D3 and the fuse F2 respectively, the other end of the voltage stabilizing diode D3 is grounded, and the fuse F2 and the fuse F1 are electrically connected with the host computer.

5. The RFID based water power gate encoding sensing system as claimed in claim 3, wherein: The wireless communication unit (41) includes a 4G communication chip U4, wherein the input end of the 4G communication chip U4 is electrically connected with the output end of the control module (3), and the chip model of the 4G communication chip U4 is ATK-IDM750C.

6. The RFID based water power gate encoding sensing system as claimed in claim 1, wherein: Further comprising a reset module (5) and an alarm module (6), wherein, The output end of the reset module (5) is electrically connected with the input end of the control module (3), for controlling system reset; The input end of the alarm module (6) is electrically connected with the output end of the control module (3), for issuing sound reminding whether induction is successful.

7. The RFID based water power gate encoding sensing system as claimed in claim 6, wherein: The reset module (5) comprises a resistor R2, a capacitor C6 and a button switch KEY1, wherein one end of the resistor R2 is connected with a power supply end, the other end of the resistor R2 is electrically connected with the capacitor C6 and one end of the button switch KEY1 respectively, and is electrically connected with the input end of the control module (3), the other end of the capacitor C6 is commonly grounded with the other end of the button switch KEY1.

8. The RFID based water power gate encoding sensing system as claimed in claim 6, wherein: The alarm module (6) comprises a resistor R21, a triode Q5 and a loudspeaker LKEY1, wherein one end of the resistor R21 is electrically connected with the output end of the control module (3), the other end of the resistor R21 is electrically connected with the base of the triode Q5, the collector of the triode Q5 is electrically connected with an external power supply end, the emitter of the triode Q5 is electrically connected with one end of the loudspeaker LKEY1, and the other end of the loudspeaker LKEY1 is grounded.

9. The RFID based water power gate encoding sensing system as claimed in claim 1, wherein: Further comprising a clock module (7) and a time reference module (8), the output end of the clock module (7) is electrically connected with the input end of the control module (3), for providing system clock, and the output end of the time reference module (8) is electrically connected with the input end of the control module (3), for providing time reference.

10. The RFID based water power gate encoding sensing system as claimed in claim 9, wherein: The clock module (7) comprises a capacitor C7, a capacitor C8, a resistor R6 and a crystal oscillator X1, wherein one end of the capacitor C7 and the capacitor C8 is commonly grounded, the other end of the capacitor C7 is electrically connected with the resistor R6, the crystal oscillator X1 and the input end of the control module (3) respectively, and the other end of the capacitor C8 is electrically connected with the other end of the resistor R6, the other end of the crystal oscillator X1 and the input end of the control module (3) respectively; The time reference module (8) comprises a capacitor C9, a capacitor C10 and a crystal oscillator X2, wherein one end of the capacitor C9 and the capacitor C10 is commonly grounded, the other end of the capacitor C9 is electrically connected with the crystal oscillator X2 and the input end of the control module (3) respectively, and the other end of the capacitor C10 is electrically connected with the other end of the crystal oscillator X2 and the input end of the control module (3) respectively.

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