CN108171301B - RFID chip with interactive switch input port and sensor induction unit - Google Patents

RFID chip with interactive switch input port and sensor induction unit Download PDF

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Publication number
CN108171301B
CN108171301B CN201611113546.3A CN201611113546A CN108171301B CN 108171301 B CN108171301 B CN 108171301B CN 201611113546 A CN201611113546 A CN 201611113546A CN 108171301 B CN108171301 B CN 108171301B
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unit
calculation control
rfid chip
control unit
interface circuit
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CN108171301A (en
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江峰
黄楚烔
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Sichuan Qiantairen Investment Management Co ltd
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Sichuan Qiantairen Investment Management Co ltd
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Priority to CN202110223247.XA priority Critical patent/CN112836780A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0716—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
    • G06K19/0717—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor the sensor being capable of sensing environmental conditions such as temperature history or pressure
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention relates to an RFID chip with an interactive switch input port and a sensor induction unit. The computer control unit is a microprocessor calculation control unit and comprises a microprocessor (CPU) and a program memory (ROM). The memory unit includes a Random Access Memory (RAM) and a data memory (EEPROM). The RFID chip can support the system to collect the variable data of the environment where the RFID chip is located, and can perform selection transformation of the sensor according to the requirement of a holder. The RFID chip with the interactive switch input port and the sensor sensing unit can not only transmit data such as goods batch numbers and identifiers, but also set the required initial recording time and the required end time of the environmental variable and data information of the environmental variable in the starting and ending time through the RFID reader-writer, and the data record of the environmental variable can be read.

Description

RFID chip with interactive switch input port and sensor induction unit
Technical Field
The present invention relates to RFID chips.
Background
With the development of the internet of things and the mobile internet, the applications of the RFID electronic tag and various IC cards become more and more extensive, especially with the overall popularization of smart phones, the radio frequency identification function and the NFC function of the mobile phones are also becoming more and more popular, and the multifunctional integrated application of the RFID electronic tag and the IC card is rapidly increasing.
The RFID chips used by the traditional RFID electronic tags all use the radio frequency antenna as the only information exchange interface, and the simple structural form ensures that the RFID chips are convenient to package and low in cost, thereby providing conditions for the rapid popularization of the RFID.
However, as RFID applications have evolved, we have found that conventional RFID chips are "single-function". That is, information can be exchanged with the system only according to the design established for the chip and the system setting of the application system. Environmental changes of the RFID application scene cannot be fed back to the application system, which causes difficulty in multifunctional integration of the RFID application. The recording of the ambient temperature is of great significance for the quality assurance of the goods, for example, during the transport, storage and sale of cold-chain logistics. Therefore, an RFID chip integrated with an interactive switch input and a sensor sensing unit provides a more effective, low-cost, safe and reliable solution for the full-process monitoring of cold-chain logistics.
Disclosure of Invention
The invention aims to solve the problem that an RFID chip is fed back to an application system according to the environment change of an application scene, so that the basic interaction function is ensured, the detection record of an environment variable is realized, the method can be used for condition monitoring of articles with strict environment requirements, and the selection requirements of different users on the RFID function are met.
The technical scheme adopted for achieving the purpose of the invention comprises six functional forms:
one is as follows:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the signal sent by the input interface circuit unit and the environment variable identified by the sensor sensing unit can be read through the calculation control unit.
The second step is as follows:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the information generated by the calculation control unit can be influenced by the signal sent to the application system by the input interface circuit unit and the environmental variable identified by the sensor sensing unit.
And thirdly:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
The storage unit is internally stored with a plurality of pieces of information.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can selectively send one or more pieces of information stored in the storage unit to the outside according to the signal generated by the input interface circuit unit and the environment variable identified by the sensor induction unit.
Fourthly, the method comprises the following steps:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
Information is stored in the storage unit. And a calculation control strategy is arranged in the calculation control unit.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can calculate or determine information to be sent outwards according to the calculation control strategy by taking the signal generated by the input interface circuit unit, the environment variable identified by the sensor induction unit and the information stored in the storage unit as parameters.
And fifthly:
the utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located;
information is stored in the storage unit; a calculation control strategy is arranged in the calculation control unit;
when the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the application system can start environment variable recording, enable the calculation control unit to set a time interval according to a calculation control strategy, and store the environment variable identified by the sensor sensing unit and the current time into the storage unit at regular time.
And the sixth step:
the utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located;
information is stored in the storage unit; a calculation control strategy is arranged in the calculation control unit;
the application system of the RFID chip sets an environment variable threshold value for the RFID chip through the RFID reader-writer, when the environment variable exceeds the threshold value, the environment variable record is automatically started, the environment variable identified by the sensor sensing unit and the current time are stored in the storage unit, when the environment variable enters the threshold value again, the environment variable record is automatically started, and the environment variable identified by the sensor sensing unit and the current time are stored in the storage unit.
Further, the calculation control unit is a digital logic calculation control unit, and the storage unit is an electrically erasable programmable read-only memory (EEPROM).
Further, the calculation control unit is a microprocessor calculation control unit which is composed of a microprocessor (CPU) and a program memory (ROM). The memory unit is composed of a Random Access Memory (RAM) and a data memory (EEPROM).
Furthermore, an external circuit of the input interface circuit unit is only a switch, and when the external circuit is switched on or switched off, the input interface circuit unit outputs different level signals to the calculation control unit.
Furthermore, the input interface circuit unit comprises a plurality of switch input interface circuits, and an external contact switch of each switch input interface circuit outputs a path of level signal to the calculation control unit. The types of these level signals are determined by the closing or opening of the corresponding off-chip contact switches.
Further, the input interface circuit unit includes a first resistor (R1), a second resistor (R2), a unidirectional control switch, and a switch control bit (C)0). The first resistor (R1) and the second resistor (R2) form a voltage division circuit, and one end of the first resistor (R1) is connected with a power supply (V)DD) The other end is divided into two paths, wherein one path is connected with a second resistor (R2) in series and then is externally connected with a switch K through a chipC0Rear earth (V)SS) In addition, one path is connected with the one-way control switch and passes through the control bit C of the calculation control unit0And after control, the input interface of the calculation control unit is accessed. The two ends of the one-way control switch are respectively K0' and K0"terminals. The external switch KC0One end linked with the second resistor (R2) is K0And a terminal.
The external switch KC0When controlled to be closed by the outside, K0Terminal and VSSAfter voltage division, K is divided by a voltage division circuit consisting of a first resistor (R1) and a second resistor (R2)0' is low potential, K0Input interface K for inputting to calculation control unit after passing through unidirectional control switch0"when K is present0"and K0Likewise, the arithmetic control unit assumes that the corresponding switch bit of the external switch circuit unit is "0".
The external switch KC0When the external control is disconnected, K0Terminal and VSSAfter the circuit is disconnected, the voltage is divided by a voltage dividing circuit consisting of a first resistor (R1) and a second resistor (R2) to obtain K0' is high potential, K0Input interface K for inputting to calculation control unit after passing through unidirectional control switch0"when K is present0"and K0Likewise, the arithmetic and control unit considers that the corresponding switch bit of the external switch circuit unit is "1".
Further, the sensor sensing unit includes, but is not limited to: a temperature sensor sensing unit, a pressure sensor sensing unit, a humidity sensor sensing unit or a light sensor sensing unit.
The technical effect of the invention is undoubted, simple interactive selection requirements can be met according to different users, and the structural form of the RFID chip is kept simple and concise to the greatest extent. The system can collect variable data of the environment where the RFID chip is located, can perform threshold value transformation according to the requirement of a holder, and records the variable value exceeding the threshold value and the current time. The RFID chip with the interactive switch input port and the sensor sensing unit can not only transmit data such as goods batch numbers and identifiers, but also set the required initial recording time and the required end time of the environmental variable and data information of the environmental variable in the start-stop time through the RFID reader-writer, know whether the change of the environmental variable exceeds a threshold value and the time of the change of the environmental variable in the whole process, and read the data record of the environmental variable.
Drawings
FIG. 1 is a diagram of a chip architecture of the present invention;
FIG. 2 is an overall system architecture diagram of the present invention;
FIG. 3 is a block diagram of a digitally logic controlled RFID chip;
FIG. 4 is a block diagram of another RFID chip with a CPU;
fig. 5 is a circuit diagram of an input interface circuit unit.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the RFID chip comprises a radio frequency interface unit, a calculation control unit, a storage unit, an input interface unit and a sensor induction unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
The RFID chip of this embodiment further includes an input interface circuit unit. In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit manually.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the signal sent by the input interface circuit unit and the environment variable identified by the sensor sensing unit can be read through the calculation control unit.
Specifically, the IC card sensor sensing unit selects a temperature sensor, and different temperature thresholds can be set according to different environments. Namely, the input interface circuit unit is three switches, and each contact switch outputs a path of level signal to the calculation control unit. The types of these level signals are determined by the closing or opening of the corresponding contact switches. When the IC card is used for monitoring the temperature of articles in different environments, different temperature thresholds need to be set, and the thresholds can be set and selected according to the needs of users.
For example:
the three switches respectively output K to the calculation control unit1、K2、K3And (4) three signals.
User setting K1、K2And K3When the temperature of the fresh products in the refrigeration supply chain is 0 and the IC card is read, the calculation control unit outputs the temperature threshold value information A in the storage area for monitoring and alarming the temperature of the fresh products in the refrigeration supply chain in real time.
User setting K1Is 1, K2Is 1, K3When the value is 0 and the IC card is read, the calculation control unit outputs the B temperature threshold value information in the storage area for real-time temperature monitoring and alarming of the medical vaccine.
User setting K1Is 1, K2Is 1, K3When 1 is read, the IC card is read, and the calculation is performedThe control unit outputs C temperature threshold value information in the storage area for real-time monitoring and alarming of the workshop temperature.
Example 2:
the RFID chip comprises a radio frequency interface unit, a calculation control unit, a storage unit, an input interface unit and a sensor induction unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
The RFID chip of this embodiment further includes an input interface circuit unit. In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit manually.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the information generated by the calculation control unit can be influenced by the signal sent to the application system by the input interface circuit unit and the environmental variable identified by the sensor sensing unit.
Specifically, the RFID chip sensor sensing unit selects a temperature sensor, and can reflect the use scene of the HIV vaccine. Namely, the input interface circuit unit is three switches, and each contact switch outputs a path of level signal to the calculation control unit. The types of these level signals are determined by the closing or opening of the corresponding contact switches.
The three switches respectively output K to the calculation control unit1、K2、K3And (4) three signals.
When the HIV vaccine is in a state of waiting for delivery from the factory, K1、K2And K3All are 0. When the RFID chip is read, the calculation control unit outputs information such as HIV vaccine serial number in the storage area, and simultaneously outputs temperature information recorded by the temperature sensor in the production process of HIV vaccine, andand the state information of waiting for delivery is output, and the system can automatically transfer to the corresponding processing program of waiting for delivery after reading the information.
When the HIV vaccine is in the process of transportation, after scanning the chip of the HIV vaccine, K1Is 1, K2And K3Are all 0. When the RFID chip is read, the calculation control unit outputs information such as HIV vaccine serial numbers in the storage area, simultaneously outputs temperature information recorded by the temperature sensor in the production and production process of the HIV vaccine and temperature information recorded in the transportation process of the HIV vaccine, outputs state information of the transportation process, and the system can automatically transfer to a corresponding processing program of a destination after reading the information.
When the HIV vaccine is at the destination, so that K is1Is 1, K2Is 1, K3Is 0. When the RFID chip is read, the calculation control unit outputs information such as HIV vaccine serial numbers in the storage area, simultaneously outputs temperature information recorded by the temperature sensor in the production and production process of the HIV vaccine, temperature information recorded in the transportation process of the HIV vaccine, temperature information recorded when the HIV vaccine is stored at a destination, and outputs state information of 'reaching the destination', and the system can automatically transfer to a corresponding processing program of reaching the destination after reading the information.
When HIV vaccine is used, make K1Is 1, K2Is 1, K3Is 1. When the RFID chip is read, the calculation control unit outputs information such as commodity serial numbers in the storage area, simultaneously outputs temperature information recorded by the temperature sensor in the production and production process of the HIV vaccine, temperature information recorded in the transportation process of the HIV vaccine, temperature information recorded when the HIV vaccine is stored at a destination, and outputs used state information.
Example 3:
the RFID chip comprises a radio frequency interface unit, a calculation control unit, a storage unit, an input interface unit and a sensor induction unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
The storage unit is internally stored with a plurality of pieces of information.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can selectively send one or more pieces of information stored in the storage unit to the outside according to the signal generated by the input interface circuit unit and the environment variable identified by the sensor induction unit.
Specifically, the pressure sensor is selected as the sensing unit of the RFID chip sensor, and different accuracies can be set according to the used scene. Namely, the input interface circuit unit is three switches, and each contact switch outputs a path of level signal to the calculation control unit. The types of these level signals are determined by the closing or opening of the corresponding contact switches. The user can select different switch combinations according to the convention, so that different pressure accuracy can be selected for measurement.
For example: the three switches respectively output K to the calculation control unit1、K2、K3And (4) three signals.
The user uses the RFID card with pressure sensor in the pulse measurement of biomedicine, and sets K1、K2And K3When the data values are all 0, the calculation control unit outputs the A measurement precision in the storage area when the RFID card is read.
Use ofThe person uses the RFID card with pressure sensor in the gas-liquid pressure measurement of ordinary life, and sets K1Is 1, K2Is 1, K3When the value is 0, when the RFID card is read, the calculation control unit outputs the B measurement precision in the storage area.
The user uses the RFID card with a pressure sensor in the pressure measurement of a mechanical device, and sets K1Is 1, K2Is 1, K3When the value is 1, when the RFID card is read, the calculation control unit outputs the C measurement precision in the storage area.
Example 4:
the RFID chip comprises a radio frequency interface unit, a calculation control unit, a storage unit, an input interface unit and a sensor induction unit. When the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna.
In the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual intervention.
The sensor sensing unit identifies an environment variable of a position where the RFID chip is located.
Information is stored in the storage unit, and a calculation control strategy is arranged in the calculation control unit.
When the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can calculate or determine information to be sent outwards according to the calculation control strategy by taking the signal generated by the input interface circuit unit, the environment variable identified by the sensor induction unit and the information stored in the storage unit as parameters.
Specifically, the sensor sensing unit of the RFID card may select various sensor elements, such as a sensor including a temperature sensor, a humidity sensor, and a pressure sensor, and selectively use them. Namely, the input interface circuit unit is three switches, and each contact switch outputs a path of level signal to the calculation control unit. The types of these level signals are determined by the closing or opening of the corresponding contact switches.
Specifically, the method comprises the following steps:
the three switches respectively output K to the calculation control unit1、K2、K3And (4) three signals.
User setting K1、K2And K3When the data values are all 0, the calculation control unit outputs the record information of the temperature sensor in the storage area when the RFID card is read.
User setting K1Is 1, K2Is 1, K3When the value is 0 and the RFID card is read, the calculation control unit outputs the record information of the humidity sensor in the storage area.
User setting K1Is 1, K2Is 1, K3When the number is 1, when the RFID card is read, the calculation control unit outputs the recorded information of the pressure sensor in the storage area.
Example 5:
the main part of this embodiment is the same as embodiment 1 or 2, and further, the RFID chip further includes an input interface circuit unit. The RFID reader-writer sends out a special appointed instruction, and the on-off state information of the input interface circuit unit can be read through the calculation control unit. This allows the holder of the RFID reader/writer or the server to know the state of the input interface circuit unit in the RFID chip (what information is output to the calculation control unit). At the same time, the above operation indirectly knows what kind of intervention is made manually to the input interface circuit unit.
Example 6
The main part of this embodiment is the same as embodiment 1, 2 or 3, but a specific input interface circuit unit as shown in fig. 5 is provided. The input interface circuit unit comprises a first resistor (R1), a second resistor (R2), a unidirectional control switch and a switch control bit (C)0). The first resistor (R1) and the second resistor (R2) form a voltage division circuit, and one end of the first resistor (R1) is connected with a power supply (V)DD) The other end is divided into two paths, wherein one path is connected with a second resistor (R2) in series and then is externally connected with a switch K through a chipC0Rear earth (V)SS) In addition, one path is connected with the one-way control switch and passes through the control bit C of the calculation control unit0And after control, the input interface of the calculation control unit is accessed. The two ends of the one-way control switch are respectively K0' and K0"terminals. The external switch KC0One end linked with the second resistor (R2) is K0And a terminal.
The external switch KC0When controlled to be closed by the outside, K0Terminal and VSSAfter voltage division, K is divided by a voltage division circuit consisting of a first resistor (R1) and a second resistor (R2)0' is low potential, K0Input interface K for inputting to calculation control unit after passing through unidirectional control switch0"when K is present0"and K0Likewise, the arithmetic control unit assumes that the corresponding switch bit of the external switch circuit unit is "0".
The external switch KC0When the external control is disconnected, K0Terminal and VSSAfter the circuit is disconnected, the voltage is divided by a voltage dividing circuit consisting of a first resistor (R1) and a second resistor (R2) to obtain K0' is high potential, K0Input interface K for inputting to calculation control unit after passing through unidirectional control switch0"when K is present0"and K0Likewise, the arithmetic and control unit considers that the corresponding switch bit of the external switch circuit unit is "1".

Claims (9)

1. The utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
the input interface circuit unit comprises a plurality of switch input interface circuits, and an external contact switch of each switch input interface circuit outputs a path of level signal to the calculation control unit; in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual or external intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located; the sensor sensing unit is one or a combination of a plurality of temperature sensor sensing units, pressure sensor sensing units, humidity sensor sensing units or light sensor sensing units; a plurality of pieces of information are stored in the storage unit;
when the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can selectively send one or more pieces of information stored in the storage unit to the outside according to the signal generated by the input interface circuit unit and the environment variable identified by the sensor induction unit.
2. The utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
the input interface circuit unit comprises a plurality of switch input interface circuits, and an external contact switch of each switch input interface circuit outputs a path of level signal to the calculation control unit; in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual or external intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located; the sensor sensing unit is one or a combination of a plurality of temperature sensor sensing units, pressure sensor sensing units, humidity sensor sensing units or light sensor sensing units;
a plurality of pieces of information are stored in the storage unit; a calculation control strategy is arranged in the calculation control unit;
when the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the calculation control unit can calculate or determine information to be sent outwards according to the calculation control strategy by taking the signal generated by the input interface circuit unit, the environment variable identified by the sensor induction unit and the information stored in the storage unit as parameters.
3. The utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
the input interface circuit unit comprises a plurality of switch input interface circuits, and an external contact switch of each switch input interface circuit outputs a path of level signal to the calculation control unit; in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual or external intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located; the sensor sensing unit is one or a combination of a plurality of temperature sensor sensing units, pressure sensor sensing units, humidity sensor sensing units or light sensor sensing units;
a plurality of pieces of information are stored in the storage unit; a calculation control strategy is arranged in the calculation control unit;
when the application system of the RFID chip sends an appointed special instruction to the RFID chip through the RFID reader-writer, the application system can start environment variable recording, enable the calculation control unit to set a time interval according to a calculation control strategy, and store the environment variable identified by the sensor sensing unit and the current time into the storage unit at regular time.
4. The utility model provides a take interactive switch input port and sensor induction element's RFID chip which characterized in that:
the RFID chip comprises a radio frequency interface circuit unit, a calculation control unit, a storage unit, a sensor induction unit and an input interface circuit unit; when the RFID reader-writer and the RFID chip carry out reading and writing operations, the information generated by the RFID reader-writer and the calculation control unit is transmitted and exchanged by the radio frequency interface circuit unit through the external antenna;
the input interface circuit unit comprises a plurality of switch input interface circuits, and an external contact switch of each switch input interface circuit outputs a path of level signal to the calculation control unit; in the RFID chip, the input interface circuit unit sends one or more signals to the calculation control unit through manual or external intervention;
the sensor sensing unit identifies the environment variable of the position where the RFID chip is located; the sensor sensing unit is one or a combination of a plurality of temperature sensor sensing units, pressure sensor sensing units, humidity sensor sensing units or light sensor sensing units;
a plurality of pieces of information are stored in the storage unit; a calculation control strategy is arranged in the calculation control unit;
the application system of the RFID chip sets an environment variable threshold range for the RFID chip through an RFID reader-writer, when the environment variable exceeds the threshold range, environment variable recording is automatically started, the environment variable and time identified by a sensor sensing unit are stored in a storage unit, and when the environment variable enters the threshold range again, the environment variable recording is automatically closed or the time interval of the environment variable recording is increased, so that the recording frequency of the environment variable is reduced.
5. The RFID chip with the interactive switch input port and the sensor sensing unit as claimed in claim 1, 2, 3 or 4, wherein: the calculation control unit is a digital logic calculation control unit; the memory unit is an Electrically Erasable Programmable Read Only Memory (EEPROM).
6. The RFID chip with the interactive switch input port and the sensor sensing unit as claimed in claim 1, 2, 3 or 4, wherein: the calculation control unit is a microprocessor calculation control unit which consists of a microprocessor (CPU) and a program memory (ROM); the memory unit is composed of a Random Access Memory (RAM) and a data memory (EEPROM).
7. The RFID chip with the interactive switch input port and the sensor sensing unit as claimed in claim 1, 2, 3 or 4, wherein: the external circuit of the input interface circuit unit is only a switch, and when the input interface circuit unit is switched on or switched off, the input interface circuit unit outputs different level signals to the calculation control unit.
8. The RFID chip with the interactive switch input port and the sensor sensing unit as claimed in claim 1, 2, 3 or 4, wherein: the type of the level signal output by the external contact switch of each switch input interface circuit to the calculation control unit is determined by the closing or opening of the corresponding off-chip contact switch.
9. The RFID chip with the interactive switch input port and the sensor sensing unit as claimed in claim 1, 2, 3 or 4, wherein: the input interface circuit unit comprises a first resistor (R1), a second resistor (R2), a unidirectional control switch and a switch control bit (C0); the first resistor (R1) and the second resistor (R2) form a voltage division circuit, one end of the first resistor (R1) is connected with a power supply (VDD), the other end of the first resistor (R1) is divided into two paths, one path of the first resistor is connected with the second resistor (R2) in series and then is grounded (VSS) after being connected with a switch KC0 externally through a chip, and the other path of the first resistor is connected with a one-way control switch and then is connected with an input interface of the calculation control unit after being controlled by a control bit C0; two ends of the one-way control switch are respectively provided with terminals K0 'and K0'; one end of the external switch KC0 linked with the second resistor (R2) is a K0 terminal;
when the external switch KC0 is controlled to be closed by the outside, the end K0 is communicated with VSS, after voltage division, K0 ' is at low potential through a voltage division circuit consisting of a first resistor (R1) and a second resistor (R2), K0 ' is input to an input interface K0 ' of the calculation control unit through a one-way control switch, at the moment, K0 ' and K0 ' are at low potential, and the calculation control unit considers that the corresponding switch position of the external switch circuit unit is ' 0 ';
when the external switch KC0 is disconnected through external control, the end K0 is disconnected with VSS, after voltage division, K0 ' is at a high potential through a voltage division circuit consisting of a first resistor (R1) and a second resistor (R2), K0 ' is input to an input interface K0 ' of the calculation control unit through a one-way control switch, at the moment, K0 ' and K0 ' are at high potentials, and the calculation control unit considers that the corresponding switch position of the external switch circuit unit is ' 1 '.
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