CN114745050A - Long data processing method based on far infrared data transmission system - Google Patents
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- 238000000034 method Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a long data processing method based on a far infrared data transmission system, which is applied to the far infrared data transmission system at least comprising an infrared data sending device and an infrared data receiving device, wherein the long data processing method specifically comprises the following steps: presetting a data length first threshold and a transmission pause time threshold based on hardware characteristics limited by the received data length of the infrared data receiving head; performing segmented processing on first data to be sent based on the first data to be sent, a preset data length first threshold and a transmission stopping time threshold, and sending the first data to an infrared data receiving head by an infrared tube; the infrared data receiving head transmits the received data to the receiving control module, and the receiving control module combines the received data based on the preset receiving time threshold.
Description
Technical Field
The invention relates to the field of data processing of infrared signals, in particular to a long data processing method based on a far infrared data transmission system.
Background
In the prior art, an infrared receiving head is generally adopted to collect far infrared data, the infrared receiving head is a device integrating receiving, amplifying and demodulating, an internal IC finishes demodulation, and the output is a digital signal.
At present, most infrared receiving tubes, especially pulse type infrared receiving heads, have the problem that the number of bytes received is shorter than the number of bytes sent or the abnormal phenomena such as error codes occur when the number of bytes continuously received reaches more than 150-200 in the receiving process due to the performance of the receiving tubes.
For example, when the infrared receiving tube of the conventional infrared receiving head IRM-3638T receives data transmitted by far infrared, when the transmission characters exceed 200 bytes, the receiving of the infrared receiving tube is unstable, that is, the received data length is shorter than the data length transmitted by far infrared, and meanwhile, the received data has error codes.
In the production detection process, in order to improve the production efficiency, a product of the IRM-3638T using the infrared receiving head, such as an intelligent meter with the infrared receiving head, needs to set factory parameters through a private protocol of 250 bytes or even more bytes, but under the existing technical conditions, due to the defect of hardware performance of the infrared receiving head, at least twice parameter instructions are needed to set factory parameters, and the production efficiency is not high. In addition, in the normal working process of the intelligent gas meter, more situations are short data transmission, long data transmission is not needed, and therefore compatibility between production test and the working process of the intelligent meter is guaranteed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a long data processing method based on a far infrared data transmission system, the inherent hardware defect of an infrared data receiving tube is solved by using the long data processing method, the realization is simple, the applicability is wide, and the following technical scheme is adopted specifically: a long data processing method based on a far infrared data transmission system is applied to the far infrared data transmission system at least comprising an infrared data sending device and an infrared data receiving device, wherein the infrared data sending device at least comprises an infrared data sending module and a sending control module which are coupled, the infrared data sending module at least comprises an infrared tube, the sending control module is used for controlling the working state of the infrared data sending module and outputting a carrier wave and first data to the infrared data sending module, the infrared data sending module generates second data by combining the carrier wave and the first data, and forwards the second data to the infrared data receiving device through the infrared tube; the infrared data receiving device at least comprises an infrared data receiving head and a receiving control module which are coupled, the infrared data receiving head receives first data and forwards the first data to the receiving control module, and the long data processing method specifically comprises the following steps: presetting a data length first threshold and a transmission pause time threshold based on hardware characteristics limited by the received data length of an infrared data receiving head; the method comprises the steps that segmentation processing is carried out on first data to be sent based on the first data, a preset data length first threshold value and a transmission stopping time threshold value, and an infrared tube sends the segmented first data to an infrared data receiving head; the infrared data receiving head forwards the received data to the receiving control module, and the receiving control module combines the received data based on a preset receiving time threshold.
Further, the performing segmented processing on the first data based on the first data to be sent, a preset data length first threshold value and a transmission suspension time threshold value, and sending the first data to an infrared data receiving head by an infrared tube specifically includes: if the data length of the first data to be sent is larger than a preset data length first threshold value, dividing the first data into a plurality of sections of data based on a preset data length second threshold value, and sending each section of data to an infrared data receiving head sequentially through an infrared tube until the first data is sent completely, wherein the data are transmitted at intervals based on a transmission stopping time threshold value, and if the data length of the first data to be sent is smaller than or equal to the preset data length first threshold value, the first data are continuously sent to the infrared data receiving head through the infrared tube.
Further, the infrared data receiving head forwards the received data to the receiving control module, and the receiving control module combines the received data based on a preset receiving time threshold, specifically including: if the interval time between the data received by the infrared data receiving head is smaller than a preset receiving time threshold, the receiving control module stores the received data; and if the interval time between the data received by the infrared data receiving head is greater than or equal to a preset receiving time threshold, judging that the first group of data is received completely.
Further, if the interval time between the data received by the infrared data receiving head is greater than or equal to the preset receiving time threshold, the method further comprises the following steps: and combining the data received and stored within the time threshold smaller than the preset receiving time into a first group of data, and storing the data received exceeding the preset receiving time threshold as a next group of data.
Further, the infrared data transmitting module includes resistors R1-R4, R18, R19, transistors Q1-Q3, an infrared tube D1, a base of the transistor Q1 is coupled to one ends of the resistors R1 and R2, an emitter is coupled to the other end of the resistor R1 and a collector of the transistor Q3 with Vcc, a collector is coupled to one end of the resistor R3, the other end of the resistor R2 is coupled to the serial port transmit pin IR _ TXD of the transmit control module, a base of the transistor Q3 is coupled to one ends of the resistors R18 and R19, an emitter is coupled to the other end of the resistor R19 and a power supply 3.3V, the other end of the resistor R18 is coupled to the serial port control pin IR _ IRr of the transmit control module, the other end of the resistor R3 is coupled to an anode of the infrared tube D1, a cathode of the infrared tube D1 is coupled to a collector of the transistor Q2, a base of the transistor Q2 is coupled to one end of the emitter of the resistor R4 and the emitter of the transistor Q2 is coupled to ground, the other end of the resistor R4 is coupled to a carrier pin TXD1 of the transmit control module.
Further, the infrared data receiving device comprises an infrared data receiving head U2 and a capacitor C1, wherein pin 1 of the infrared data receiving head is coupled to a data receiving pin IR _ RXD of the receiving control module, pin 2 is coupled to one end of a capacitor C1 and ground, and pin 3 is coupled to a power supply and VCC and the other end of the capacitor C1.
The invention has the beneficial effects that:
1. setting the interval and the segment length of data sent by an infrared data sending end according to the hardware characteristics of an infrared data receiving head, and ensuring the correctness and the validity of the data received by the infrared data receiving head;
2, storing and combining the received data at the infrared data receiving end, thereby realizing the complete receiving of the long data;
3. the efficiency of the production test process is improved, and the communication of long data required by the production test process and short data in a normal working state is compatible;
4. the software method is used for overcoming the defects of the infrared receiving head on hardware, and the infrared receiving head has high expansibility, is easy to realize and has strong engineering practicability.
Drawings
Other features and advantages of the present invention will become apparent from the following description of the preferred embodiment, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
In the drawings:
fig. 1 is a schematic block diagram of a far infrared data transmission system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a transmission control module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an infrared data transmitting module of the present invention;
FIG. 4 is a schematic diagram of an infrared data receiving head of the present invention;
fig. 5 is a flowchart of an embodiment of a long data processing method based on a far infrared data transmission system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the long data transmission described in the present invention refers to data transmission of more than 200 bytes of a packet of data.
The infrared receiving head is generally divided into two types, namely a level type or a pulse type, wherein the level type can continuously receive data, but the interference resistance is poor, and the transmission distance is short. The pulse type infrared receiving head cannot receive continuous signals, but has strong anti-interference capability, and is the most common infrared receiving head in industrial products, and an infrared data receiving head is used. In order to solve the technical problem that pulse-type infrared receiving heads are needed to be adopted and continuous long data needs to be received in practical application, the invention provides a long data processing method for a far infrared data transmission system.
The long data processing method based on the far infrared data transmission system provided by the invention is applied to the far infrared data transmission system at least comprising an infrared data sending device and an infrared data receiving device, and the schematic block diagram is shown in figure 1.
The infrared data sending equipment at least comprises an infrared data sending module and a sending control module which are coupled, the infrared data sending module comprises an infrared tube, the sending control module is used for controlling the working state of the infrared data sending module and outputting a carrier wave and first data to the infrared data sending module, the infrared data sending module generates second data by combining the carrier wave and the first data, and forwards the second data to the infrared data receiving equipment through the infrared tube. Fig. 2 shows a schematic diagram of the transmission control module, and fig. 3 shows a schematic diagram of the infrared data transmission module.
As shown in fig. 2 and fig. 3, the infrared data transmitting module includes resistors R1-R4, R18, R19, transistors Q1-Q3, and an infrared transistor D1, a base of the transistor Q1 is coupled to one ends of the resistors R1 and R2, an emitter is coupled to the other end of the resistor R1 and a collector of the transistor Q3 is coupled to Vcc, a collector is coupled to one end of the resistor R3, and the other end of the resistor R2 is coupled to a pin 64 of a U1 of the transmitting control module as a serial port transmitting pin IR _ TXD. The sending control module sends the pin IR _ TXD through the serial port and transmits data to be sent to the infrared data sending module. The data are converted into the change of a Q1 switch through resistors R1 and R2 and a triode Q1, and then the communication data are sent out in a far infrared light mode through a D1 infrared tube D1.
The base of the triode Q3 is coupled to one end of the resistor R18 and the resistor R19, the emitter is coupled to the other end of the resistor R19 and the power supply 3.3V, the other end of the resistor R18 is coupled to the U1 pin 59 of the transmission control module, and serves as the serial port control pin IR _ IRr, and the transmission control module controls the operating state of the infrared data transmission module through the serial port control pin IR _ IR, that is, controls the infrared data transmission module to be in a standby state or an operating state. The resistors R18, R19 and the triode Q3 are used for controlling the working state of the infrared data transmission module. When the IR _ IRr is at a low level, Q3 is turned on, and the infrared data transmitting module is in a transmitting working state. When the IR _ IRr is at a high level, Q3 is turned off, and the infrared data transmission module is in a transmission standby state.
The other end of the resistor R3 is coupled to the anode of the infrared tube D1, the cathode of the infrared tube D1 is coupled to the collector of the transistor Q2, the base of the transistor Q2 is coupled to one end of the resistor R4, the emitter of the transistor Q2 is coupled to ground, the other end of the resistor R4 is coupled to a pin 7 of the transmission control module as a carrier pin TXD1, and the transmission control module provides a carrier wave required for infrared signal transmission through the carrier pin. The transmitted data is placed in a carrier through resistor R4 and transistor Q2.
In an embodiment of the present invention, the infrared tube D1 is AT203, the transistors Q1 and Q3 are PNP transistors, and the transistor Q2 is an NPN transistor.
The infrared data receiving device at least includes an infrared data receiving head and a receiving control module coupled to each other, and fig. 4 is a schematic diagram of an infrared data receiving end according to an embodiment of the present invention, where U2 is the infrared data receiving head. As shown in fig. 2 and fig. 4, the infrared data receiving device includes an infrared data receiving head U2, a resistor R7 and a capacitor C1, where pin 1 of the infrared data receiving head is coupled to one end of the resistor R7, the other end of the resistor R7 is coupled to a pin 64 of the receiving control module as a data receiving pin IR _ RXD, pin 2 is coupled to one end of a capacitor C1 and ground, and pin 3 is coupled to a power supply and VCC and the other end of the capacitor C1. The infrared data receiving head receives the data and forwards the data to the receiving control module.
In one embodiment of the invention, the infrared data receiving head adopts IRM-3638T.
It should be noted that the sending control module and the receiving control module are not the same control module in practical application, and in the embodiment of the present invention, for convenience of explanation, both the sending control module and the receiving control module are exemplified by the control module shown in fig. 2.
The long data processing method based on the far infrared data transmission system provided by the invention is applied to the far infrared data transmission system, and the flow chart is shown in fig. 5, and specifically comprises the following steps:
s1, presetting a data length first threshold and a transmission suspension time threshold based on the hardware characteristics of the infrared data receiving head limited by the received data length.
The first threshold value of the preset data length and the transmission stopping time threshold value are set according to different infrared data receiving heads, and indexes can be obtained by reference to reference data given by infrared data receiving head manufacturers or through actual tests. Generally, the length is set according to the longest data length of the continuous data that can be received.
In one embodiment of the invention, the first threshold of the preset data length is 150 bytes according to the longest data length which can be continuously received and is obtained by testing the infrared data receiving head, and the threshold of the transmission stopping time is 200ms
And S2, performing segmentation processing on the first data to be transmitted based on the first data to be transmitted, a preset data length first threshold value and a transmission stopping time threshold value, and transmitting the first data to an infrared data receiving head by an infrared tube, and specifically buckling.
If the data length of the first data to be transmitted is larger than a preset data length first threshold value, dividing the first data into a plurality of sections of data based on a preset data length second threshold value,
sequentially sending each segment of data to an infrared data receiving head through an infrared tube until the first data is sent, wherein each segment of data is transmitted at intervals based on a transmission stopping time threshold value,
and if the data length of the first data to be sent is less than or equal to a preset data length first threshold value, continuously sending the first data to an infrared data receiving head through an infrared tube.
In an embodiment of the present invention, a serial port of a computer terminal is connected to a serial port pin of a transmission control module, for example, a data length of first data to be transmitted is 500 bytes, the transmission control module receives the 500 bytes of first data to be transmitted, the length of the first data is greater than a preset data length first threshold value by 150 bytes, then the 500 bytes are segmented, for example, a preset data length second threshold value is set to 120 bytes, then the 500 bytes of first data are processed into 5 segments, which are respectively 4 segments of 120 bytes and 1 segment of 20 bytes, and then the data are prepared for forwarding. The transmission control module pulls the IR _ IRr low, firstly transmits 120 bytes of data through the IR _ TXD, then continues to transmit 120 bytes after the transmission is suspended for about 200ms until the transmission of the last 20 bytes is completed.
And S3, the infrared data receiving head forwards the received data to the receiving control module, and the receiving control module combines the received data based on the preset receiving time threshold.
The infrared data receiving head forwards the received data to the receiving control module, and the receiving control module combines the received data based on a preset receiving time threshold, specifically comprising:
if the interval time between the data received by the infrared data receiving head is smaller than a preset receiving time threshold, the receiving control module stores the received data;
and if the interval time between the data received by the infrared data receiving head is greater than or equal to a preset receiving time threshold, judging that the first group of data is received completely.
And combining the data received and stored within the time threshold less than the preset receiving time into a first group of data, and storing the data received within the time threshold exceeding the preset receiving time as a next group of data.
In an embodiment of the present invention, the preset receiving time threshold of the infrared data receiving head end is 500ms, and the preset receiving time threshold is set based on the transmission suspension time threshold or is adjusted according to the actual working condition.
The first section of data received by the infrared data receiving head is 120 bytes, the second section of data is received after 200ms, if the data receiving interval between the last byte of the first section of data and the first byte of the second section of data is less than 500ms, the two sections of data are judged to be a group of data and stored. Until no data is received for more than or equal to 500ms, it is determined that one group of data is received, and in this embodiment, the received 5 groups of data are combined into data with a length of 500 bytes. And the data of 500 bytes can be directly used for parameter configuration of production equipment conveniently in the production test process, and the production efficiency is not high because the parameters are set without sending instructions for many times.
In some production equipment with solidified hardware, the expansion of long data instructions can be realized simply by updating software, and the method has strong universality. And a new device is not required to be selected, so that the verification time cost and the device cost are saved, and the production efficiency is improved.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (6)
1. A long data processing method based on a far infrared data transmission system is applied to the far infrared data transmission system at least comprising an infrared data sending device and an infrared data receiving device, wherein the infrared data sending device at least comprises an infrared data sending module and a sending control module which are coupled, the infrared data sending module at least comprises an infrared tube, the sending control module is used for controlling the working state of the infrared data sending module and outputting a carrier wave and first data to the infrared data sending module, the infrared data sending module combines the carrier wave and the first data to generate second data, and the second data is forwarded to the infrared data receiving device through the infrared tube; the infrared data receiving device at least comprises an infrared data receiving head and a receiving control module which are coupled, the infrared data receiving head receives first data and forwards the first data to the receiving control module, and the long data processing method is characterized by specifically comprising the following steps:
presetting a data length first threshold and a transmission pause time threshold based on hardware characteristics limited by the received data length of the infrared data receiving head;
the method comprises the steps that segmentation processing is carried out on first data to be sent based on the first data, a preset data length first threshold value and a transmission stopping time threshold value, and an infrared tube sends the segmented first data to an infrared data receiving head;
the infrared data receiving head transmits the received data to the receiving control module, and the receiving control module combines the received data based on the preset receiving time threshold.
2. The method for processing long data based on a far infrared data transmission system according to claim 1, wherein the step of processing the first data in a segmented manner based on the first data to be transmitted, a preset data length first threshold and a transmission pause time threshold, and the step of transmitting the first data to the infrared data receiving head by the infrared tube specifically comprises:
if the data length of the first data to be transmitted is larger than a preset data length first threshold value, dividing the first data into a plurality of sections of data based on a preset data length second threshold value,
sequentially sending each segment of data to an infrared data receiving head through an infrared tube until the first data is sent, wherein each segment of data is transmitted at intervals based on a transmission stopping time threshold value,
and if the data length of the first data to be sent is less than or equal to a preset data length first threshold value, continuously sending the first data to an infrared data receiving head through an infrared tube.
3. The long data processing method based on far infrared data transmission system as set forth in claim 1,
the infrared data receiving head forwards the received data to the receiving control module, and the receiving control module combines the received data based on a preset receiving time threshold, specifically comprising:
if the interval time between the data received by the infrared data receiving head is smaller than a preset receiving time threshold, the receiving control module stores the received data;
and if the interval time between the data received by the infrared data receiving head is greater than or equal to a preset receiving time threshold, judging that the first group of data is received completely.
4. The long data processing method based on far infrared data transmission system as claimed in claim 3, wherein if the interval time between the data received by the infrared data receiving head is greater than or equal to the preset receiving time threshold, further comprising:
and combining the data received and stored within the time threshold smaller than the preset receiving time into a first group of data, and storing the data received exceeding the preset receiving time threshold as a next group of data.
5. The long data processing method based on far infrared data transmission system as claimed in claim 1, wherein the infrared data transmitting module comprises resistors R1-R4, R18, R19, transistors Q1-Q3, an infrared tube D1, a base of the transistor Q1 is coupled to one ends of the resistors R1 and R2, an emitter is coupled to the other end of the resistor R1 and a collector of the transistor Q3, a collector is coupled to one end of the resistor R3, the other end of the resistor R2 is coupled to a serial transmission pin IR _ TXD of the transmission control module, a base of the transistor Q3 is coupled to one ends of the resistors R18 and R19, an emitter is coupled to the other end of the resistor R19 and a power supply 3.3V, the other end of the resistor R18 is coupled to a serial transmission pin IR _ IRr of the transmission control module, the other end of the resistor R3 is coupled to an anode of the infrared tube D1, and a cathode of the transistor D1 is coupled to a collector of the transistor Q2, the base of the transistor Q2 is coupled to one end of the resistor R4, the emitter of the transistor Q2 is coupled to ground, and the other end of the resistor R4 is coupled to the carrier pin TXD1 of the transmission control module.
6. The long data processing method based on the far infrared data transmission system as claimed in claim 1, wherein the infrared data receiving device comprises an infrared data receiving head U2 and a capacitor C1, wherein a pin 1 of the infrared data receiving head is coupled to a data receiving pin IR RXD of the receiving control module, a pin 2 is coupled to one end of a capacitor C1 and ground, and a pin 3 is coupled to a power supply and VCC and the other end of the capacitor C1.
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| CN112929904A (en) * | 2021-01-26 | 2021-06-08 | 北京升哲科技有限公司 | Information transmission method and device, communication equipment and storage medium |
| CN215646797U (en) * | 2021-07-23 | 2022-01-25 | 浙江威星智能仪表股份有限公司 | Far infrared communication processing circuit for gas meter |
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