CN107240244A - A kind of passive data acquisition terminal, optical controller and system - Google Patents

Abstract

The invention discloses a passive data acquisition terminal, an optical controller and a system, wherein the terminal includes: a sensor, a processing circuit, a first microcontroller, an optical energy converter, a first optical data receiver and a first optical data receiver. A data transmitter; the output end of the sensor is connected to the input end of the processing circuit; the output end of the processing circuit is connected to the first microcontroller; the light energy converter is connected to the power supply end of the first microcontroller; the first optical data receiver It is connected with the first microcontroller; the first optical data transmitter is connected with the first microcontroller. The terminal uses optical signals to communicate with the upper computer and obtain the power for terminal operation. It will not cause insulation problems due to the influence of dusty environment for a long time, and has high reliability.

Description

A passive data acquisition terminal, optical controller and system

technical field

The invention relates to the technical field of data monitoring, in particular to a passive data acquisition terminal, an optical controller and a system.

Background technique

In order to better and more conveniently control the process of power transmission and transformation, a large number of high-voltage switchgears are installed in the power transmission and transformation system. The stable operation of high-voltage switchgears is of great significance to the power system. Poor contact of switch contacts in the switch cabinet, poor contact of connectors, poor contact of wires or aging insulation will lead to heating, arcing and other phenomena, which will eventually lead to operation failure of the switch cabinet. Overheating is also the most important phenomenon before the failure of the switchgear. By monitoring the operating temperature of the equipment in the switchgear, the occurrence of failures can be effectively prevented.

There are currently four main technologies for switchgear temperature monitoring:

1) Surface acoustic wave temperature measurement: The temperature measurement system is mainly composed of a surface acoustic wave wireless temperature measurement probe (sensor) and a temperature reader based on the radar principle. Its working process is: the reader sends out an electromagnetic scanning signal, the probe receives the electromagnetic wave signal and is converted by the interdigital transducer into its internal working surface acoustic wave; the surface acoustic wave is then converted into electromagnetic wave signal by the interdigital transducer The antenna returns to the reader; the propagation characteristics of the surface acoustic wave have a linear characteristic relationship with the temperature, so that the echo signal returned by the probe has temperature characteristics; the reader can obtain the temperature information by extracting the characteristics of the electromagnetic wave signal returned by the probe, so that Enables wireless and passive temperature monitoring.

2) Infrared temperature measurement: All objects with a temperature higher than absolute zero are constantly emitting infrared radiation energy to the surrounding space. The distribution of infrared radiation energy according to the wavelength has a very close relationship with the surface temperature of the measured object, so , by measuring the infrared energy emitted by the object itself, its surface temperature can be accurately measured.

3) Optical fiber temperature sensor: The optical fiber temperature sensor uses a polymer temperature-sensitive material that matches the refractive index of the optical fiber to coat the outside of two optical fibers that are fused together, so that light energy is input from one optical fiber to the reflective surface from the other. Since the new temperature-sensitive material is affected by temperature, the refractive index changes, so the output optical power is a function of temperature.

4) Conventional temperature measurement sensor method: the sensor adopts the conventional method of temperature measurement. In order to increase the isolation function, the wireless communication method is adopted. In order to obtain power, there are currently two methods: ①Inductive power acquisition method: Inductive power acquisition can be achieved through temperature changes , pressure, solar energy, electric current, etc.; ② battery power supply mode.

In the course of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

1) Surface acoustic wave temperature measurement: Surface acoustic wave can use the physical characteristics of the device to realize passive wireless temperature measurement. This characteristic is also sensitive to displacement and vibration, so it requires high debugging during use, and it will be used within a period of time. It needs to be corrected. In addition, the surface acoustic wave adopts single crystal material, and the manufacturing process requires high precision and relatively harsh conditions, resulting in high manufacturing costs.

2) Infrared temperature measurement: The implementation of infrared temperature measurement is simple and low in cost, but there are some difficulties in the application of switch cabinets. The wiring, terminals, and contacts of switch cabinets are not completely exposed, and there are many obstacles, so installing infrared Temperature measurement equipment is more difficult.

3) The optical fiber can realize large-area temperature measurement, but its cost is high, and in the long-term operation, because the switch cabinet is not a completely closed space, there is some dust inside, and the dust falling on the surface of the optical fiber will reduce the insulation ability of the optical fiber , leading to more serious accidents.

4) Conventional temperature measurement sensor method: ①Inductive power supply method: Inductive power supply can be obtained through temperature changes, pressure, solar energy, current, etc. In the switchgear, the temperature and pressure do not change much, and the changes are unstable, so there is no way to obtain energy stably, and there is no way to obtain solar energy inside the switchgear. The way of taking electricity by current is relatively affected by complex changes. ②The power supply is relatively stable through the battery, but the battery needs to be replaced regularly, and the switchgear needs to be powered off, but the maintenance of the switchgear is not random, so replacing the battery is a relatively big problem.

The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art.

Contents of the invention

The object of the present invention is to provide a passive data acquisition terminal, an optical controller and a system, so as to overcome the defect of poor reliability of the existing acquisition terminals.

A passive data acquisition terminal provided by an embodiment of the present invention includes: a sensor, a processing circuit, a first microcontroller, an optical energy converter, a first optical data receiver, and a first optical data transmitter; the sensor's The output end is connected to the input end of the processing circuit, and the sensor is used to send the collected environmental data to the processing circuit; the output end of the processing circuit is connected to the first microcontroller, and the processing The circuit is used to send the processed environmental data to the first microcontroller; the light energy converter is connected to the power supply terminal of the first microcontroller, and the light energy converter is used to receive external light energy, And convert light energy into electrical energy to power the first microcontroller; the first optical data receiver is connected to the first microcontroller, and the first optical data receiver is used to receive the optical signal from the upper computer Instructions sent in the form, and forward the instructions to the first microcontroller; the first optical data transmitter is connected to the first microcontroller, and the first microcontroller is used to process the The final environmental data is sent to the host computer in the form of an optical signal through the first optical data transmitter.

In a possible implementation manner, the passive data collection terminal further includes: a first wireless communication circuit; the first wireless communication circuit is connected to the first microcontroller, and the first wireless communication circuit is used for A communication connection is established with the upper computer.

In a possible implementation manner, the passive data collection terminal further includes: a storage battery; the storage battery is connected to a power supply terminal of the first microcontroller.

In a possible implementation manner, the output end of the sensor is connected to the input end of the processing circuit through a high temperature resistant data line.

Based on the same inventive concept, an embodiment of the present invention also provides a light controller, including: a second microcontroller, a light energy transmitter, a second light data transmitter, a second light data receiver, and a steering controller; The light energy transmitter is connected with the second microcontroller, and the light energy transmitter is used to send light energy to the outside; the second light data transmitter is connected with the second microcontroller, and the second The optical data transmitter is used to receive the instructions transmitted by the second microcontroller, and send the instructions to the data collection terminal in the form of optical signals; the second optical data receiver is connected to the second microcontroller, The second optical data receiver is used to receive the environmental data sent by the data acquisition terminal in the form of optical signals, and forward the environmental data to the second micro-controller; the steering controller and the second micro-controller The light energy emitter is connected with the light energy emitter, and the light energy emitter is arranged on the steering controller; the steering controller is used to control the pose parameters of the light energy emitter according to the steering instruction sent by the second microcontroller.

In a possible implementation manner, the light controller further includes: a second wireless communication circuit; the second wireless communication circuit is connected to the second microcontroller, and the second wireless communication circuit is used to communicate with the data A communication connection is established between the collection terminals.

In a possible implementation manner, the optical controller further includes: an Ethernet interface; the Ethernet interface is connected to the second microcontroller, and the Ethernet interface is used to establish communication with the data concentrator connect.

In a possible implementation, the light controller further includes: a communication interface circuit, the communication interface circuit including one or more of RS232 interface, RS485 interface, RS422 interface, CAN interface; the communication interface circuit It is connected with the second microcontroller, and the communication interface circuit is used to establish a communication connection with the data concentrator.

Based on the same inventive concept, an embodiment of the present invention also provides an optical communication passive wireless sensor system, including: the passive data acquisition terminal as described above, the optical controller and the data concentrator as described above; the passive There is a communication connection between the data collection terminal and the light controller, and a communication connection between the light controller and the data concentrator.

In a possible implementation manner, a plurality of passive data collection terminals are respectively provided with a communication connection with the light controller.

The embodiments of the present invention provide a passive data collection terminal, an optical controller and a system. The collection terminal uses optical signals to communicate with the upper computer, and obtains the electric energy for the operation of the terminal without being affected by the dust environment for a long time. However, insulation problems occur, and the reliability is high; the terminal is a passive device and does not need to replace the battery, which can reduce the work of the staff and avoid the waste of human resources. Use the high temperature resistant data line to realize the data collection of the detection difficulties. The working reliability of the terminal can be further improved through the spare first wireless communication circuit and the storage battery. The optical controller uses optical signals to communicate with the passive data acquisition terminal, and provides energy for the terminal to operate in the form of optical energy. The optical controller can be applied to most scenarios and has high reliability.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a first structural schematic diagram of a passive data collection terminal in an embodiment of the present invention;

Fig. 2 is a second structural schematic diagram of a passive data acquisition terminal in an embodiment of the present invention;

3 is a schematic diagram of the first structure of the light controller in the embodiment of the present invention;

4 is a second structural schematic diagram of the light controller in the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an optical communication passive wireless sensor system in an embodiment of the present invention.

detailed description

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the gist of the present invention.

According to an embodiment of the present invention, a passive data acquisition terminal is provided, as shown in FIG. 1 , including: a sensor 110, a processing circuit 120, a first microcontroller 100, an optical energy converter 130, and a first optical data receiver 140 and the first optical data transmitter 150.

Specifically, the output terminal of the sensor 110 is connected to the input terminal of the processing circuit 120 , and the sensor 110 is used to send the collected environmental data to the processing circuit 120 . The output end of the processing circuit 120 is connected to the first microcontroller 100 , and the processing circuit 120 is used to send the processed environmental data to the first microcontroller 100 .

In the embodiment of the present invention, the sensor 110 can specifically be a temperature sensor, which is used to collect the temperature of the environment or the node where it is located, such as the ambient temperature in the switch cabinet or the surface temperature of a certain component; after the sensor collects the environmental data, it will The collected environmental data is sent to the processing circuit 120 . The processed data 120 is used to process the environmental data; specifically, the processing circuit performs processing such as filtering and amplifying the environmental data, and sends the processed environmental data to the first microcontroller.

The first microcontroller 100 is specifically an MCU (Micro Control Unit), configured to further process and store the received processed environmental data. At the same time, the first microcontroller 100 is also used to forward the environmental data to the host computer.

Specifically, as shown in FIG. 1, the first optical data receiver 140 is connected to the first microcontroller 100, and the first optical data receiver 140 is used to receive instructions sent by the upper computer in the form of optical signals, and forward the instructions to The first microcontroller 100. The first optical data transmitter 150 is connected to the first microcontroller 100 , and the first microcontroller 100 is used to send the processed environmental data to the host computer in the form of an optical signal through the first optical data transmitter 150 .

In the embodiment of the present invention, the host computer is a device that establishes a communication connection with the passive data collection terminal, and the host computer may specifically be an optical controller, which can communicate with the passive data collection terminal in the form of an optical signal. Among them, the upper computer and the passive data acquisition terminal are mainly based on wireless optical communication technology to realize communication; light, like radio waves, is a kind of electromagnetic wave, and the basic principle of propagating network signals is the same. For example, attaching a microchip to an ordinary LED light bulb can control it to blink millions of times per second, indicating 1 when it is on and 0 when it is off. Because the frequency is too fast, the human eye can't detect it at all, but the photosensitive sensor can receive these changes. In this way, binary data is quickly encoded into light signals and transmitted efficiently. That is, the host computer sends data to the passive data collection terminal by controlling the flickering of visible light; the data collection terminal uses the first optical data receiver 140 to decode the received optical signal and obtain the information therein. At the same time, the first optical data transmitter 150 of the data collection terminal converts the environmental data into an optical signal, and sends the optical signal to the upper computer, and the upper computer decodes the received optical signal to obtain the environmental data.

The passive data collection terminal is composed of passive devices, which are powered by the light energy converter 130 . Specifically, the light energy converter 130 is connected to the power supply terminal of the first microcontroller 100 , and the light energy converter 130 is used to receive external light energy and convert the light energy into electrical energy to supply power to the first microcontroller 100 . In the embodiment of the present invention, since the data acquisition terminal communicates with the host computer through an optical signal, the optical signal can specifically be visible light, infrared light or ultraviolet light, etc., so optional, the first optical data receiver 140 and the optical energy converter 130 can be integrated into one device, that is, the optical signal sent by the upper computer is received through one device, and the optical signal also provides power for the passive data acquisition terminal; when the upper computer does not need to send data to the acquisition terminal, the optical signal is A continuous signal, that is, the data contained in the optical signal is all 1. In addition, the first optical data receiver 140 and the first optical data transmitter 150 can also be integrated into one device, that is, data receiving and sending, and power supply can be realized through one integrated device.

A passive data acquisition terminal provided by the embodiment of the present invention uses optical signals to realize communication with the host computer and obtain the electric energy for the operation of the terminal. It will not cause insulation problems due to the influence of the dust environment for a long time, and has high reliability. ; The terminal is a passive device and does not need to replace the battery, which can reduce the work of the staff and avoid the waste of human resources.

On the basis of the above embodiments, as shown in FIG. 2 , the passive data collection terminal further includes: a first wireless communication circuit 160 . The first wireless communication circuit 160 is connected with the first microcontroller 100, and the first wireless communication circuit 160 is used to establish a communication connection with the upper computer. In the embodiment of the present invention, the first wireless communication circuit 160 is a backup communication method, that is, the terminal can also send environmental data to the host computer through the first wireless communication circuit 160, and receive instructions issued by the host computer. The reliability of the passive data collection terminal is improved through the first wireless communication circuit, and the terminal cannot work normally when the optical data receiver, transmitter, etc. fail.

Optionally, the output end of the sensor 110 is connected to the input end of the processing circuit 120 through a high temperature resistant data line. Meanwhile, the processing circuit 120 may also be connected to the first microcontroller through a high temperature resistant data line. Through the high temperature resistant data line, the sensor can be flexibly arranged at the detection node (such as a node that is easily blocked by other objects), and the first optical data receiver 140 and the first optical data transmitter 150 can be arranged at a node that is easy to receive optical signals. location, so as to realize the data collection of difficult detection points. At the same time, when the passive data acquisition terminal collects the temperature of the nodes in the switch cabinet (such as A-phase, B-phase, C-phase nodes, etc.), based on safety considerations, all passive data acquisition terminals are wired in the switch cabinet, and each switch The cabinet is provided with at least one optical controller, and the optical controller provides optical energy to one or more passive data acquisition terminals in the cabinet and realizes optical signal communication.

In a possible implementation manner, as shown in FIG. 2 , the terminal further includes: a storage battery 170 ; the storage battery 170 is connected to a power supply terminal of the first microcontroller 100 . In the embodiment of the present invention, the battery 170 is a backup battery; under normal circumstances, the light energy converter supplies power to the terminal, and charges the battery 170 until the battery is fully charged; when the light energy converter cannot supply power normally, it is switched to be powered by the battery .

A passive data acquisition terminal provided by the embodiment of the present invention uses optical signals to realize communication with the host computer and obtain the electric energy for the operation of the terminal. It will not cause insulation problems due to the influence of the dust environment for a long time, and has high reliability. ; The terminal is a passive device and does not need to replace the battery, which can reduce the work of the staff and avoid the waste of human resources. Use the high temperature resistant data line to realize the data collection of the detection difficulties. The working reliability of the terminal can be further improved through the spare first wireless communication circuit and the storage battery.

Based on the same inventive concept, an embodiment of the present invention also provides a light controller, as shown in FIG. 3 , including: a second microcontroller 200, a light energy transmitter 210, a second light data data receiver 230 and steering controller 240 .

In the embodiment of the present invention, the light energy transmitter 210 is connected to the second microcontroller 200, and the light energy transmitter 210 is used to send light energy to the outside world. Specifically, the light energy transmitter 210 is used to send light energy to the above-mentioned passive data collection terminal, so that the light energy converter of the terminal can work normally after receiving the light energy.

The second optical data transmitter 220 is connected to the second microcontroller 200, and the second optical data transmitter 220 is used to receive the instructions transmitted by the second microcontroller 200, and send the instructions to the data collection terminal in the form of optical signals; The second optical data receiver 230 is connected with the second microcontroller 200 , and the second optical data receiver 230 is used to receive the environmental data sent by the data collection terminal in the form of optical signal, and forward the environmental data to the second microcontroller 200 . In the embodiment of the present invention, the second optical data receiver 230 and the steering controller 240 also realize the communication with the passive data collection terminal based on the wireless optical communication technology, and the realization principle is the same as that in the embodiment shown in FIG. 1 , which will not be described here.

The steering controller 240 is connected with the second microcontroller 200, and the light energy emitter 210 is arranged on the steering controller 240; the steering controller 240 is used to control the light energy emitter 210 according to the steering instruction sent by the second microcontroller 200 pose parameters. In the embodiment of the present invention, the pose parameters include the spatial rotation angle of the optical energy emitter, and the orientation of the optical energy emitter 210 can be determined according to the spatial rotation angle, so that optical energy can be provided for a specific collection terminal. Specifically, the steering controller can be a steering device equipped with a motor to achieve a steering angle of approximately 360 degrees, so that the light controller can provide light energy for the optical data collection terminal at any angle.

Optionally, the optical energy transmitter 210 and the second optical data transmitter 220 can be an integrated device, that is, the power supply and command transmission to the data collection terminal are realized through one device; meanwhile, the second optical data transmitter 220 is also It is arranged on the steering controller 240 and cooperates with the light energy emitter 210 .

An optical controller provided by an embodiment of the present invention uses optical signals to realize communication with a passive data collection terminal, and provides operating energy for the terminal in the form of optical energy. The optical controller can be applied to most scenarios, High reliability.

On the basis of the above embodiments, as shown in FIG. 4 , the light controller further includes: a second wireless communication circuit 250 . The second wireless communication circuit 250 is connected with the second microcontroller 200, and the second wireless communication circuit 250 is used to establish a communication connection with the data collection terminal. In the embodiment of the present invention, the second wireless communication circuit 250 is a backup communication method, that is, the light controller can also send instructions to the collection terminal through the second wireless communication circuit 250, and receive environmental data uploaded by the collection terminal. Through the second wireless communication circuit, the reliability of the optical controller can be improved, and the optical controller can be prevented from working normally when the optical data receiver, transmitter, etc. fail.

In a possible implementation manner, as shown in FIG. 4 , the optical controller further includes: an Ethernet interface 260 . The Ethernet interface 260 is connected with the second microcontroller 200, and the Ethernet interface 260 is used to establish a communication connection with the data concentrator. In the embodiment of the present invention, the data concentrator can communicate with multiple light controllers at the same time, and the light controller can send the collected environmental data to the background server through the data concentrator, so that the background server can process all the environmental data .

Optionally, as shown in Figure 4, the light controller also includes: a communication interface circuit 270, the communication interface circuit 270 includes one or more of the RS232 interface, the RS485 interface, the RS422 interface, and the CAN interface; the communication interface circuit and The second microcontroller 200 is connected, and the communication interface circuit 270 is used to establish a communication connection with the data concentrator. In the embodiment of the present invention, both the Ethernet interface and the communication interface circuit are used to communicate with the data concentrator, but the communication methods are different.

Based on the same inventive concept, the embodiment of the present invention also provides an optical communication passive wireless sensor system, as shown in FIG. There is a communication connection between the collection terminal 10 and the light controller 20 , and a communication connection between the light controller 20 and the data concentrator 30 . Optionally, a plurality of passive data collection terminals are respectively provided with communication connections with the light controller. That is, the relationship between the optical controller and the passive data collection terminal can be one-to-many; similarly, the relationship between the data concentrator and the optical controller can also be one-to-many. m, n, k in Fig. 5 represent the number of collection terminals or light controllers.

Wherein, the passive data acquisition terminal may specifically be the acquisition terminal shown in Fig. 1 and Fig. 2 above, and the optical controller may specifically be the optical controller shown in Fig. 3 and Fig. 4, both of which may complete data transmission through optical signals. The data concentrator finally sends the collected environmental data to the background server. The data concentrator can reduce communication lines and improve line utilization.

An optical communication passive wireless sensor system provided by an embodiment of the present invention, the passive data acquisition terminal uses optical signals to realize communication with the optical controller, and obtains the electric energy for the operation of the terminal, without being affected by the dust environment for a long time However, insulation problems occur, and the reliability is high; and the terminal is a passive device, and there is no need to replace the battery, which can reduce the work of the staff and avoid the waste of human resources. The data concentrator can reduce communication lines and improve line utilization.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to make and use various exemplary embodiments of the invention, as well as various Choose and change. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. a kind of passive data acquisition terminal, it is characterised in that including：Sensor, process circuit, the first microcontroller, luminous energy Converter, the first light data receiver and the first light data transmitter；

The output end of the sensor is connected with the input of the process circuit, and the sensor is used for the environment that will be collected Data are sent to the process circuit；

The output end of the process circuit is connected with first microcontroller, and the process circuit is used for the environment after processing Data are sent to first microcontroller；

The light energy converter is connected with the power end of first microcontroller, and the light energy converter is used to receive exterior light Can, and it is that first microcontroller is powered to convert light energy into electric energy；

The first light data receiver is connected with first microcontroller, and the first light data receiver is used to receive The instruction that position machine is sent in optical signal form, and the instruction is forwarded to first microcontroller；

The first light data transmitter is connected with first microcontroller, and first microcontroller is used for the processing Environmental data afterwards is sent to host computer by the first light data transmitter in optical signal form.

2. passive data acquisition terminal according to claim 1, it is characterised in that also include：First radio communication circuit；

First radio communication circuit is connected with first microcontroller, first radio communication circuit be used for it is described Communication connection is set up between host computer.

3. passive data acquisition terminal according to claim 1, it is characterised in that also include：Battery；

The battery is connected with the power end of first microcontroller.

4. passive data acquisition terminal according to claim 1, it is characterised in that the output end of the sensor passes through resistance to High-temperature data line is connected with the input of the process circuit.

5. a kind of optical controller, it is characterised in that including：Second microcontroller, light energy emitter, the second light data transmitter, Second light data receiver and steering controller；

The light energy emitter is connected with second microcontroller, and the light energy emitter is used to outwardly send luminous energy；

The second light data transmitter is connected with second microcontroller, and the second light data transmitter is used to receive institute The instruction of the second microcontroller transmission is stated, and sends the instruction to data collection station in optical signal form；

The second light data receiver is connected with second microcontroller, and the second light data receiver is used to receive number The environmental data sent according to acquisition terminal in optical signal form, and the environmental data is forwarded to second microcontroller；

The steering controller is connected with second microcontroller, and the light energy emitter is arranged at the steering controller On；The steering controller is used for the position of the steering order control light energy emitter sent according to second microcontroller Appearance parameter.

6. optical controller according to claim 5, it is characterised in that also include：Second radio communication circuit；

Second radio communication circuit is connected with second microcontroller, and second radio communication circuit is used for and data Communication connection is set up between acquisition terminal.

7. optical controller according to claim 5, it is characterised in that also include：Ethernet interface；

The Ethernet interface is connected with second microcontroller, and the Ethernet interface is used to build between data concentrator Vertical communication connection.

8. optical controller according to claim 5, it is characterised in that also include：Communication interface circuit, the communication interface Circuit includes one or more in RS232 interfaces, RS485 interfaces, RS422 interfaces, CAN interface；

The communication interface circuit is connected with second microcontroller, the communication interface circuit be used for data concentrator it Between set up communication connection.

9. a kind of optic communication passive wireless sensor system, it is characterised in that including：Nothing as described in claim 1-4 is any Source Data Acquisition terminal, optical controller and data concentrator as described in claim 5-8 is any；

Provided with communication connection between the passive data acquisition terminal and the optical controller, the optical controller and the data Provided with communication connection between concentrator.

10. optic communication passive wireless sensor system according to claim 9, it is characterised in that multiple passive datas are adopted Collect terminal respectively between the optical controller provided with communication connection.