CN202471127U - Digital humiture all-in-one transmitter based on TDR technology - Google Patents
Digital humiture all-in-one transmitter based on TDR technology Download PDFInfo
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- CN202471127U CN202471127U CN2012200154044U CN201220015404U CN202471127U CN 202471127 U CN202471127 U CN 202471127U CN 2012200154044 U CN2012200154044 U CN 2012200154044U CN 201220015404 U CN201220015404 U CN 201220015404U CN 202471127 U CN202471127 U CN 202471127U
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- humidity
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Abstract
The utility model discloses a digital humiture all-in-one transmitter based on a TDR technology, comprising a housing (1), and a signal processing circuit mainboard (3) arranged inside the housing, wherein an external cable is connected with the signal processing circuit mainboard (3) through a connector lug at one end of the housing, the other end of the housing is provided with a housing cover (5), the housing cover (5) is provided with one or more probes (2) used for detecting the humidity of soil and at least one temperature probe (7) used for detecting the temperature of the soil, and the probe (2) and the temperature probe (7) are respectively connected with the signal processing circuit mainboard (3) through a signal line. The digital humiture all-in-one transmitter is based on the TDR technology, has the advantages of being capable of simultaneously measuring soil humiture, being fast, accurate and stable in measurement, and good in reliability, and having an excellent waterproof performance, and is suitable to environments to be monitored, such as field and greenhouse, etc.
Description
Technical field
The utility model relates to the soil parameters field of measurement, particularly a kind of digital Temperature and Humidity one transmitter based on the TDR technology of measured soil temperature, humidity (plot ratio) simultaneously.
Background technology
Modernization development along with agricultural production; Soil parameters, the particularly scientific management of temperature, humidity are more and more important to the growth of plant, produce for modern agriculture; Monitor soil temperature, the humidity in each greenhouse; The humiture in greenhouse relies on producers' manually-operated not only to waste time and energy, and is difficult to guarantee to regulate in time, exactly the soil environment parameter in greenhouse, if can not in time be regulated; Influence to crop in the whole greenhouse is bigger, even possibly cause plant to rot the generation of situation such as root, death.
And the device that soil temperature and humidity is measured commonly used at present can only carry out single detective to temperature or humidity mostly, and the contact area of its probe and soil is less, and is slower to the detection speed of soil moisture; Detection accuracy is lower, and the soil polarization can increase the corrosion speed of exploring electrode conversely, has shortened the serviceable life of sniffer; And if in time do not change sniffer, the value accuracy that then detects is lower, and the soil moisture that detects is relevant with the mechanism of soil itself; Can't the true water cut of accurate response soil, the power consumption after its signals collecting in the transmission course is higher, on a bus, can only articulate a sniffer; When needs are surveyed the large tracts of land monitoring of environmental; Need many communication lines of cloth, wiring process is numerous and diverse, and the wiring expense is higher; Can't guarantee the reliability of data transmission procedure, restricted application.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of prior art, and a kind of digital Temperature and Humidity one transmitter based on the TDR technology is provided, and introduces the TDR technology; Adopt special structural design, make it have favorable waterproof property, make it to be embedded in for a long time in the soil; Carry out on-line measurement and become feed signals, have measured soil temperature, humidity (plot ratio) simultaneously, measure quick, accurate, stable; Good reliability, the mechanism of the soil moisture of measurement and soil itself is irrelevant, has reacted the true water cut of soil; Adopt extremely low power consumption and RS485 bus communication mode; Make on a bus, to articulate nearly 32 transmitters (installing repeater additional can also accelerate), connect, can guarantee enough sky cablings that adds through exclusive communication bus; Good reliability is applicable to monitoring of environmental such as land for growing field crops, booth.
The purpose of the utility model is to realize through following technical scheme: based on the digital Temperature and Humidity one transmitter of TDR technology; It comprises casing and is located at the signal processing circuit mainboard in the casing; External cable is connected with the signal processing circuit mainboard through the connector lug of casing one end; The other end of casing is provided with cabinet cover; Cabinet cover is provided with one or more probes that are used to survey soil moisture and is used to survey the temp probe of the soil moisture with at least one, and probe is connected with the signal processing circuit mainboard through signal wire respectively with temp probe.
Described signal processing circuit mainboard comprises communication module, microprocessor, temperature signal regulation circuit, moisture signal modulate circuit, original signal sample circuit, reflected signal sample circuit and the active crystal oscillating circuit of high frequency; Communication module is connected with microprocessor through internal bus; The temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit respectively with the moisture signal modulate circuit; The output of the active crystal oscillating circuit of high frequency is connected with the original signal sample circuit; And be connected with probe through matched line; The reflected signal of probe is connected with the reflected signal sample circuit, and the output of original signal sample circuit and reflected signal sample circuit is connected with the moisture signal modulate circuit, and the output of moisture signal modulate circuit is connected with microprocessor through the A/D change-over circuit; The output of temp probe is connected with the temperature signal regulation circuit, and the output of temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit.
Described casing is connected through waterproof connector with cabinet cover; Described probe, temp probe are made up of stainless-steel tube.
The beneficial effect of the utility model is:
(1) the utility model provides a kind of digital Temperature and Humidity one transmitter based on the TDR technology, simultaneously measured soil temperature, humidity (plot ratio);
(2) the utility model provides a kind of digital Temperature and Humidity one transmitter based on the TDR technology, adopts special structural design, makes it have favorable waterproof property, makes it to be embedded in for a long time in the soil, carries out on-line measurement and becomes feed signals;
(3) the utility model provides a kind of digital Temperature and Humidity one transmitter based on the TDR technology; Adopted TDR (Time Domain Reflectometry) technology to come measured soil humidity; It is had measure fast, accurately, stable; The soil moisture of measuring and the mechanism of soil itself are irrelevant, have reacted the true water cut of soil, and the method also is most popular in the world soil humidity measuring method;
(4) the utility model provides a kind of digital Temperature and Humidity one transmitter based on the TDR technology; Adopt extremely low power consumption and RS485 bus communication mode, make on a bus, to articulate nearly 32 transmitters (installing repeater additional can also accelerate), connect through exclusive communication bus; Can guarantee enough sky cablings that adds; Good reliability, and have fabulous water resistance, can well be applicable to monitoring of environmental such as land for growing field crops, booth.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model signal processing circuit mainboard structure block diagram;
Fig. 3 is the utility model probe, temp probe arrangement architecture synoptic diagram;
Among the figure, 1-casing, 2-probe, 3-signal processing circuit mainboard, 4-cable, 5-cabinet cover, 6-mainboard support, 7-temp probe, 8-signal transmission body.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but the protection domain of the utility model is not limited to the following stated.
As shown in Figure 1, based on the digital Temperature and Humidity one transmitter of TDR technology, it comprises casing 1 and is located at the signal processing circuit mainboard 3 in the casing 1; External cable 4 is connected with signal processing circuit mainboard 3 through the connector lug of casing one end, and cable 4 is for the transmitter power supply and communication interface is provided, and the other end of casing is provided with cabinet cover 5; Described casing 1 and cabinet cover 5 are connected through waterproof connector, play waterproof effect, make transmitter to be embedded in the soil for a long time and work; Cabinet cover 5 is provided with one or more probes 2 that are used to survey soil moisture; Humidity in the collection soil changes, and also is provided with the temp probe 7 that at least one is used to survey the soil moisture on the cabinet cover 5, the temperature variation in the collection soil; Probe 2 is connected with signal processing circuit mainboard 3 through signal wire respectively with temp probe 7; As shown in Figure 3, cabinet cover is provided with four devices, is respectively two probes that are used to survey soil moisture 2, a temp probe 7 that is used to survey the soil moisture; And a signal transmission body 8 that is used for transmission signals, described probe 2, temp probe 7 are made up of stainless-steel tube.
As shown in Figure 2; Described signal processing circuit mainboard 3 comprises communication module, microprocessor, temperature signal regulation circuit, moisture signal modulate circuit, original signal sample circuit, reflected signal sample circuit and the active crystal oscillating circuit of high frequency; Communication module is connected with microprocessor through internal bus; The temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit respectively with the moisture signal modulate circuit; The output of the active crystal oscillating circuit of high frequency is connected with the original signal sample circuit, and is connected with probe 2 through matched line, and the reflected signal of probe 2 is connected with the reflected signal sample circuit; The output of original signal sample circuit and reflected signal sample circuit is connected with the moisture signal modulate circuit; The output of moisture signal modulate circuit is connected with microprocessor through the A/D change-over circuit, and the output of temp probe 7 is connected with the temperature signal regulation circuit, and the output of temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit.
The course of work of the utility model:
Moisture measurement: produce a high-frequency signal through the active crystal oscillating circuit of high frequency, high-frequency signal obtains original signal information through the original signal sample circuit, and original signal is transferred to probe 2 through the impedance matching line, is transmitted in the soil through probe 2 again.Reflected signal is propagated and produced to high-frequency signal in soil, reflected signal is sent back through probe 2, gathers through the reflected signal Acquisition Circuit.The information that information that the original signal sample circuit collects and reflected signal sample circuit collect converts humidity value into one tunnel simulating signal through the moisture signal modulate circuit; Gather through the A/D change-over circuit; Relation through built-in humidity value and gained AD value converses real humidity value again, and is stored in the processor MCU;
Temperature survey: the temperature variation that temp probe 7 is detected is converted into simulating signal through the temperature signal regulation circuit; Gather through the A/D change-over circuit; Equally, the relation through built-in temperature and gained AD value converses real temperature value, and is stored in the processor MCU;
Power module is that signal processing circuit mainboard 3 provides power supply; Communication module provides and extraneous interface of communicating by letter, and through order the soil temperature, the humidity value that collect is sent out.
Claims (4)
1. based on the technological digital Temperature and Humidity one transmitter of TDR; It is characterized in that: it comprises casing (1) and is located at the signal processing circuit mainboard (3) in the casing (1); External cable (4) is connected with signal processing circuit mainboard (3) through the connector lug of casing one end; The other end of casing is provided with cabinet cover (5); Cabinet cover (5) is provided with one or more be used to the survey probe (2) of soil moisture and the temp probes (7) that at least one is used to survey the soil moisture, and probe (2) is connected with signal processing circuit mainboard (3) through signal wire respectively with temp probe (7).
2. the digital Temperature and Humidity one transmitter based on the TDR technology according to claim 1; It is characterized in that: described signal processing circuit mainboard (3) comprises communication module, microprocessor, temperature signal regulation circuit, moisture signal modulate circuit, original signal sample circuit, reflected signal sample circuit and the active crystal oscillating circuit of high frequency; Communication module is connected with microprocessor through internal bus; The temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit respectively with the moisture signal modulate circuit; The output of the active crystal oscillating circuit of high frequency is connected with the original signal sample circuit; And be connected with probe (2) through matched line; The reflected signal of probe (2) is connected with the reflected signal sample circuit, and the output of original signal sample circuit and reflected signal sample circuit is connected with the moisture signal modulate circuit, and the output of moisture signal modulate circuit is connected with microprocessor through the A/D change-over circuit; The output of temp probe (7) is connected with the temperature signal regulation circuit, and the output of temperature signal regulation circuit is connected with microprocessor through the A/D change-over circuit.
3. the digital Temperature and Humidity one transmitter based on the TDR technology according to claim 1, it is characterized in that: described casing (1) is connected through waterproof connector with cabinet cover (5).
4. the digital Temperature and Humidity one transmitter based on the TDR technology according to claim 1 and 2, it is characterized in that: described probe (2), temp probe (7) are made up of stainless-steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200154044U CN202471127U (en) | 2012-01-13 | 2012-01-13 | Digital humiture all-in-one transmitter based on TDR technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200154044U CN202471127U (en) | 2012-01-13 | 2012-01-13 | Digital humiture all-in-one transmitter based on TDR technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471127U true CN202471127U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200154044U Expired - Fee Related CN202471127U (en) | 2012-01-13 | 2012-01-13 | Digital humiture all-in-one transmitter based on TDR technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973951A (en) * | 2016-07-04 | 2016-09-28 | 中国环境科学研究院 | Compost material water content measuring probe as well as monitoring device and monitoring system |
| CN108444534A (en) * | 2018-05-09 | 2018-08-24 | 中国农业大学 | A kind of Soil moisture and temperature detection device |
-
2012
- 2012-01-13 CN CN2012200154044U patent/CN202471127U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973951A (en) * | 2016-07-04 | 2016-09-28 | 中国环境科学研究院 | Compost material water content measuring probe as well as monitoring device and monitoring system |
| CN108444534A (en) * | 2018-05-09 | 2018-08-24 | 中国农业大学 | A kind of Soil moisture and temperature detection device |
| CN108444534B (en) * | 2018-05-09 | 2019-10-22 | 中国农业大学 | A kind of Soil moisture and temperature detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN HUIGU AGRICULTURAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHENGDU CHENGXINTE AUTOMATION SYSTEM CO., LTD. Effective date: 20150709 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150709 Address after: 610000, No. 81, building 1, No. 1, No. 2, 5 Xin Jie street, Chengdu hi tech Zone, Sichuan Patentee after: Sichuan Wellcrop Agricultural Technology Co., Ltd. Address before: 610016, C, 2, Tianfu Software Park, 81 new East Street, Chengdu hi tech Zone, Sichuan, China Patentee before: Chengdu Chengxinte Automation System Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20170113 |