CN204241113U - A kind of HVDC (High Voltage Direct Current) transmission system temperature collection device - Google Patents
A kind of HVDC (High Voltage Direct Current) transmission system temperature collection device Download PDFInfo
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- CN204241113U CN204241113U CN201420752690.1U CN201420752690U CN204241113U CN 204241113 U CN204241113 U CN 204241113U CN 201420752690 U CN201420752690 U CN 201420752690U CN 204241113 U CN204241113 U CN 204241113U
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Abstract
The utility model discloses a kind of HVDC (High Voltage Direct Current) transmission system temperature collection device, it comprises two Survey control casees, two optical fiber link modules, bipolar pole control system, temperature collection unit, described temperature collection unit comprises primary environment temperature sensor, environment temperature sensor for subsequent use and the commutation circuit for being switched to environment temperature sensor for subsequent use when primary environment temperature sensor, the output terminal of primary environment temperature sensor and environment temperature sensor for subsequent use is connected to two input ends of commutation circuit respectively, the output terminal of commutation circuit is electrically connected with the input end of the first Survey control case and the second Survey control case respectively.The utility model arranges primary, spare environment temperature sensor and realizes measures ambient temperature by commutation circuit and send bipolar pole control system to, realize the redundant configuration of environment temperature sensor, simultaneously, when avoiding bipolar running overload, the bipolar off-center operation that the lateral error because of environment temperature sensor causes.
Description
Technical field
The utility model relates to technical field of high-voltage direct, is specifically related to a kind of HVDC (High Voltage Direct Current) transmission system temperature collection device.
Background technology
HVDC (High Voltage Direct Current) transmission system be all designed with certain in short-term with lasting capability of overload, to meet the requirement of in particular cases power delivery.When a certain pole DC system fault causes locking or disturbance, the transmission power of pole is perfected by the pole instantaneous raising of control function, within the scope of capability of overload, partly or entirely transfer DC power is to the normal DC transmission system run, and alleviates the impact of power loss to system.Meanwhile, during peak load, artificially can also set bipolar or one pole running overload, to improve straight-flow system power delivering capability.
The overload function that DC transmission engineering is arranged is divided into transient overload, in short-term overload, continues overload three kinds.Bipolar capability of overload depends mainly on environment temperature, valve cooling system inner cold water enters coolant-temperature gage and whether converter transformer cooling system has redundancy three factors.Wherein environment temperature has the greatest impact to capability of overload, and especially when environment temperature is higher, capability of overload is responsive for the reacting condition of environment temperature, reduces rapidly along with the rising of environment temperature.It is collected by temperature sensor that capability of overload calculates the environment temperature used, bipolar temperature collection sensor is arranged on same position, bipolar respectively by respective temperature sensor measurement environment temperature, bipolar pole control system (being respectively pole 1 pole control system and pole 2 pole control system) is delivered to respectively through fieldbus, for the calculating of respective capability of overload, specifically please refer to shown in Fig. 1, a kind of HVDC (High Voltage Direct Current) transmission system temperature collection device, it comprises Survey control case 2, optical fiber link module (OLM, Optical Link Module) 3, pole 1 pole control system 4, Survey control case 5, optical fiber link module 6, pole 2 pole control system 7 and pole 1 environment temperature sensor 11 be installed on bipolar temperature collection plate 1 and pole 2 environment temperature sensor 12, wherein, pole 1 environment temperature sensor 11 is by Survey control case 2, optical fiber link module 3 is connected to pole 1 pole control system 4, pole 2 environment temperature sensor 12 is by Survey control case 5, optical fiber link module 6 is connected to pole 2 pole control system 7, between Survey control case 2 and optical fiber link module 3, and all connected by fieldbus between Survey control case 5 and optical fiber link module 6, Survey control case 2 and Survey control case 5 all adopt SU200 Survey control case equipment.
There is certain defect in this temperature collecting device:
1, same current conversion station DC bipolar geographic position is the same, and environment temperature is indifference also.Same position installed by current bipolar temperature collection sensor is also consider based on this point.But bipolar sensor exists lateral error can hardly be avoided, and it is affected by environment comparatively large to calculate gained capability of overload, and especially when environment temperature is higher, capability of overload calculates the subtle change reaction of environment temperature responsive.When bipolar running overload, because bipolar ambient temperature measurement exists lateral error, cause bipolar calculating gained capability of overload different, easily cause bipolar off-center operation.Occurred in bipolar running overload process at present, because environment temperature exists the event that error causes bipolar off-center operation.
2, respective pole control system delivered to respectively by bipolar each employing temperature sensor, and sensor configuration is irredundant.During one pole running overload, once single-sensor breaks down, one pole capability of overload counting loss, causes power abnormal.In bipolar running overload process, single-sensor breaks down, and except making abnormal success ratio, also may cause bipolar off-center operation.
Utility model content
In order to solve the problem, the utility model patent provides a kind of HVDC (High Voltage Direct Current) transmission system temperature collection device, it arranges primary, spare environment temperature sensor and realizes temperature collection by commutation circuit and send bipolar pole control system to, realize the redundant configuration of environment temperature sensor, meanwhile, because of bipolar off-center operation that the lateral error of environment temperature sensor causes when avoiding bipolar running overload.
For achieving the above object, the technical scheme that the utility model is taked is:
A kind of HVDC (High Voltage Direct Current) transmission system temperature collection device, it comprises the first Survey control case, first optical fiber link module, pole 1 pole control system, second Survey control case, second optical fiber link module, pole 2 pole control system, the output terminal of described first Survey control case is by the input end of the first optical fiber link model calling extremely 1 pole control system, the output terminal of described second Survey control case is by the input end of the second optical fiber link model calling extremely 2 pole control system, described HVDC (High Voltage Direct Current) transmission system temperature collection device comprises a temperature collection unit further, described temperature collection unit comprises primary environment temperature sensor, environment temperature sensor for subsequent use and the commutation circuit for being switched to environment temperature sensor for subsequent use when primary environment temperature sensor, the output terminal of described primary environment temperature sensor and environment temperature sensor for subsequent use is connected to two input ends of commutation circuit respectively, the output terminal of described commutation circuit is electrically connected with the input end of the first Survey control case and the second Survey control case respectively.
Described commutation circuit is single-pole double-throw switch (SPDT), described single-pole double-throw switch (SPDT) comprises a moving contact and two fixed contacts, wherein, the input end of the first Survey control case and the second Survey control case is all electrically connected to this moving contact, and described two fixed contacts are electrically connected to the output terminal of primary environment temperature sensor and environment temperature sensor for subsequent use respectively.
Described commutation circuit comprises window comparator, not gate, relay, and the normally closed contact to match with described relay and normally opened contact, wherein, one end of described normally closed contact and normally opened contact is connected to the output terminal of primary environment temperature sensor and environment temperature sensor for subsequent use respectively, the other end is all connected to the input end of the first Survey control case and the second Survey control case, three input ends of described window comparator are connected to the output terminal of primary environment temperature sensor respectively, upper limit reference voltage source A and lower limit reference voltage source B, the output terminal of described window comparator is connected to the control end of relay by not gate.
Described commutation circuit comprises the first single-chip microcomputer, first switching tube, second switch pipe, the input end of described first switching tube and second switch pipe is connected to the output terminal of primary environment temperature sensor and environment temperature sensor for subsequent use respectively, the output terminal of described first switching tube and second switch pipe is all connected to the input end of the first Survey control case and the second Survey control case, the input end of described first single-chip microcomputer is connected between primary environment temperature sensor and the first switching tube, two output terminals of described first single-chip microcomputer are electrically connected with the control end of the first switching tube and second switch pipe respectively.
Described commutation circuit comprises second singlechip, 3rd switching tube, 4th switching tube, the input end of described 3rd switching tube and the 4th switching tube is connected to the output terminal of primary environment temperature sensor and environment temperature sensor for subsequent use respectively, the output terminal of described 3rd switching tube and the 4th switching tube is all connected to the input end of the first Survey control case and the second Survey control case, two input ends of described second singlechip are connected between primary environment temperature sensor and the 3rd switching tube respectively, and between environment temperature sensor for subsequent use and the 4th switching tube, two output terminals of described second singlechip are electrically connected with the control end of the 3rd switching tube and the 4th switching tube respectively.
Described first Survey control case and the second Survey control case are SU200 device.
Described first Survey control case is all connected by fieldbus with between the first optical fiber link module and between the second Survey control case with the second optical fiber link module.
Compared with prior art, its beneficial effect is the utility model:
1, realized the measurement of environment temperature by same environment temperature sensor, when effectively can avoid bipolar running overload, due to bipolar environment temperature sensor lateral error, cause the situation of bipolar off-center operation.
2, bipolar environment temperature all possesses redundancy feature, and when bipolar or one pole running overload, when avoiding environment temperature sensor fault, capability of overload miscount, causes power to adjust abnormal or bipolar off-center operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing HVDC (High Voltage Direct Current) transmission system temperature collection device;
Fig. 2 is the structure principle chart of the utility model HVDC (High Voltage Direct Current) transmission system temperature collection device;
Fig. 3 is the structural representation of the utility model HVDC (High Voltage Direct Current) transmission system temperature collection device embodiment one;
Fig. 4 is the structural representation of the utility model HVDC (High Voltage Direct Current) transmission system temperature collection device embodiment two;
Fig. 5 is the structural representation of the utility model HVDC (High Voltage Direct Current) transmission system temperature collection device embodiment three;
Fig. 6 is the structural representation of the utility model HVDC (High Voltage Direct Current) transmission system temperature collection device embodiment four.
Wherein: 1, temperature collection unit; 11, primary environment temperature sensor; 12, environment temperature sensor for subsequent use; 2, Survey control case; 3, optical fiber link module; 4, pole 1 pole control system; 5, Survey control case; 6, optical fiber link module; 7, pole 2 pole control system; 8, commutation circuit; 81, single-pole double-throw switch (SPDT); 821, window comparator; 822, not gate; 823, relay; 824, normally closed contact; 825, normally opened contact; 831, single-chip microcomputer; 832, switching tube; 833, switching tube; 841, single-chip microcomputer; 842, switching tube; 843, switching tube; 9, bipolar temperature collection plate; 91, pole 1 environment temperature sensor; 92, pole 2 environment temperature sensor.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
The structural principle of HVDC (High Voltage Direct Current) transmission system temperature collection device please refer to shown in Fig. 2, it comprises temperature collection unit 1, Survey control case 2, optical fiber link module 3, pole 1 pole control system 4, Survey control case 5, optical fiber link module 6 and pole 2 pole control system 7, temperature collection unit 1 comprises the primary environment temperature sensor 11 of redundancy each other, environment temperature sensor 12 for subsequent use and commutation circuit 8, wherein, primary environment temperature sensor 11 provides ambient temperature measurement data for pole 1 pole control system 4 and pole 2 pole control system 7 simultaneously under normal circumstances, ensure that the consistance of the data that pole 1 pole control system 4 and pole 2 pole control system 7 obtain, avoid and cause bipolar pole control system calculate gained capability of overload difference and easily cause bipolar off-center operation because of the lateral error of image data.Commutation circuit 8 starts redundancy environment temperature sensor for subsequent use 12 when primary environment temperature sensor 11 fault (such as fluctuate the situations such as comparatively large or no-output) provides ambient temperature measurement data for bipolar pole control system.Specifically, primary environment temperature sensor 11, the output terminal of environment temperature sensor 12 for subsequent use is connected to two input ends of commutation circuit 8 respectively, the output terminal of commutation circuit 8 is connected respectively with bipolar pole control system, namely the output terminal of commutation circuit 8 is by Survey control case 2, optical fiber link module 3 connects extremely 1 pole control system 4, again by Survey control case 5, optical fiber link module 6 connects extremely 2 pole control system 7, between Survey control case 2 and optical fiber link module 3, and all connected by fieldbus between Survey control case 5 and optical fiber link module 6, Survey control case 2 and Survey control case 5 all adopt SU200 Survey control case equipment.
The utility model shows the embodiment that four kinds adopt different commutation circuit 8.
Embodiment one
The commutation circuit 8 of embodiment one adopts the single-pole double-throw switch (SPDT) 81 of hand-operated forced switching, single-pole double-throw switch (SPDT) 81 comprises a moving contact and two fixed contacts, wherein, the input end of Survey control case 2 and Survey control case 5 is all electrically connected to this moving contact, and two fixed contacts are electrically connected to the output terminal of primary environment temperature sensor 11 and environment temperature sensor for subsequent use 12 respectively.During use, disconnecting link is first placed in the side of primary environment temperature sensor 11, namely primary environment temperature sensor 11 is connected respectively with bipolar pole control system, and when primary environment temperature sensor 11 fault, (can by mode looking up the faults such as Temperature displaying) switches disconnecting link again and be placed in environment temperature sensor 12 side for subsequent use.
Embodiment two
Embodiment two is automatic switch-over circuit, specifically comprise window comparator 821, not gate 822, relay 823, and the normally closed contact 824 to match with relay 823 and normally opened contact 825, wherein, one end of normally closed contact 824 and normally opened contact 825 is connected to the output terminal of primary environment temperature sensor 11 and environment temperature sensor for subsequent use 12 respectively, the other end is all connected to the input end of Survey control case 2 and Survey control case 5, three input ends of window comparator 821 are connected to the output terminal of primary environment temperature sensor 11 respectively, upper limit reference voltage source A and lower limit reference voltage source B, the output terminal of window comparator 821 is connected to the control end of relay 823 by not gate 822.Window comparator 821 adopts two identical comparers (the first comparer and the second comparer) to form, wherein, the output terminal of primary environment temperature sensor 11 is connected respectively to the reverse input end of the first comparer and the positive input of the second comparer, and upper limit reference voltage source A is connected to the positive input of the first comparer, lower limit reference voltage source B is connected on the reverse input end of the second comparer, upper limit reference voltage source A and lower limit reference voltage source B provides upper limit reference voltage and lower limit reference voltage respectively, and upper limit reference voltage is greater than lower limit reference voltage, when the output of the output terminal of primary environment temperature sensor 11 is between upper limit reference magnitude of voltage and lower limit reference magnitude of voltage, illustrate that primary environment temperature sensor 11 fluctuates less, window comparator 821 exports high level, relay 823 loss of excitation, normally closed contact 824 is kept closed, and normally opened contact 825 remains open state, continue to adopt primary environment temperature sensor 11 to carry out temperature acquisition.Otherwise, when primary environment temperature sensor 11 fluctuates comparatively large or no-output, then the output of the output terminal of primary environment temperature sensor 11 will be greater than upper limit reference voltage and refer to or be less than lower limit reference magnitude of voltage, window comparator 821 output low level, relay 823 excitation, normally closed contact 824 disconnects, and normally opened contact 825 closes, and switches to environment temperature sensor 12 for subsequent use and carries out temperature acquisition.
Embodiment three
The commutation circuit 8 of embodiment three adopts the fit structure of single-chip microcomputer and switching tube to realize automatically switching, concrete single-chip microcomputer 831, switching tube 832, switching tube 833, the input end of switching tube 832 and switching tube 833 is connected to the output terminal of primary environment temperature sensor 11 and environment temperature sensor for subsequent use 12 respectively, the output terminal of switching tube 832 and switching tube 833 is all connected to the input end of Survey control case 2 and Survey control case 5, the input end of single-chip microcomputer 831 is connected between primary environment temperature sensor 11 and switching tube 832, two output terminals of single-chip microcomputer 831 are electrically connected with the control end of switching tube 832 and switching tube 833 respectively.Under normal circumstances, by switching tube 832 conducting, switching tube 833 disconnects single-chip microcomputer 831, thus selects temperature value measured by primary environment temperature sensor 11 to deliver to bipolar pole control system by fieldbus, and environment temperature sensor 12 for subsequent use is for subsequent use as redundancy.Meanwhile, single-chip microcomputer 831 also judges the validity of environment temperature, and the environment temperature Tamb measured when primary environment temperature sensor 11 is greater than the maximum effective value Tmax of setting or is less than the minimum effective value Tmin of setting or variation of ambient temperature rate T
1-T
2/ (t1-t2) continues to be greater than the maximum rate of change △ T/ △ t of setting, judges that this primary environment temperature sensor 11 measures fault.Namely when primary environment temperature sensor 11 exceed setting range or primary environment temperature sensor 11 record environment temperature short-time fluctuations larger time, judge primary climate temperature sensor 11 fault, environment temperature sensor 12 for subsequent use can be automatically switched to.Switching tube 432 and switching tube 433 all can adopt triode or metal-oxide-semiconductor.
Embodiment four
Embodiment four is substantially identical with the test philosophy of embodiment three, embodiment four by environment temperature sensor for subsequent use 12 (prerequisite be think environment temperature sensor 12 non-fault for subsequent use) as the benchmark evaluating primary environment temperature sensor 11 fault, when the difference of environment temperature sensor 12 for subsequent use and primary environment temperature sensor 11 is greater than setting value, then think primary environment temperature sensor 11 record environmental temperature fluctuation larger time, judge primary climate temperature sensor fault, environment temperature sensor 12 for subsequent use can be automatically switched to.Particularly, change-over switch 8 comprises single-chip microcomputer 841, switching tube 842, switching tube 843, the input end of switching tube 842 and switching tube 843 is connected to the output terminal of primary environment temperature sensor 11 and environment temperature sensor for subsequent use 12 respectively, the output terminal of switching tube 842 and switching tube 843 is all connected to the input end of Survey control case 2 and Survey control case 5, two input ends of single-chip microcomputer 841 are connected between primary environment temperature sensor 11 and switching tube 842 respectively, and between environment temperature sensor 12 for subsequent use and switching tube 843, two output terminals of single-chip microcomputer 841 are electrically connected with the control end of switching tube 842 and switching tube 843 respectively.Switching tube 432 and switching tube 433 all can adopt triode or metal-oxide-semiconductor.
Although the utility model is described by specific embodiment, it will be appreciated by those skilled in the art that, when not departing from the utility model scope, various conversion can also be carried out and be equal to substituting to the utility model.In addition, for particular condition or application, various amendment can be made to the utility model, and not depart from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole embodiments fallen in the utility model right.
Claims (7)
1. a HVDC (High Voltage Direct Current) transmission system temperature collection device, it comprises the first Survey control case (2), first optical fiber link module (3), pole 1 pole control system (4), second Survey control case (5), second optical fiber link module (6), pole 2 pole control system (7), the output terminal of described first Survey control case (2) connects the input end of extremely 1 pole control system (4) by the first optical fiber link module (3), the output terminal of described second Survey control case (5) connects the input end of extremely 2 pole control system (7) by the second optical fiber link module (6), it is characterized in that, described HVDC (High Voltage Direct Current) transmission system temperature collection device comprises a temperature collection unit (1) further, described temperature collection unit (1) comprises primary environment temperature sensor (11), environment temperature sensor for subsequent use (12) and the commutation circuit (8) for being switched to environment temperature sensor for subsequent use (12) when primary environment temperature sensor (11), the output terminal of described primary environment temperature sensor (11) and environment temperature sensor for subsequent use (12) is connected to two input ends of commutation circuit (8) respectively, the output terminal of described commutation circuit (8) is electrically connected with the input end of the first Survey control case (2) and the second Survey control case (5) respectively.
2. HVDC (High Voltage Direct Current) transmission system temperature collection device according to claim 1, it is characterized in that, described commutation circuit (8) is single-pole double-throw switch (SPDT) (81), described single-pole double-throw switch (SPDT) (81) comprises a moving contact and two fixed contacts, wherein, the input end of the first Survey control case (2) and the second Survey control case (5) is all electrically connected to this moving contact, and described two fixed contacts are electrically connected to the output terminal of primary environment temperature sensor (11) and environment temperature sensor for subsequent use (12) respectively.
3. HVDC (High Voltage Direct Current) transmission system temperature collection device according to claim 1, it is characterized in that, described commutation circuit (8) comprises window comparator (821), not gate (822), relay (823), and the normally closed contact (824) to match with described relay (823) and normally opened contact (825), wherein, one end of described normally closed contact (824) and normally opened contact (825) is connected to the output terminal of primary environment temperature sensor (11) and environment temperature sensor for subsequent use (12) respectively, the other end is all connected to the input end of the first Survey control case (2) and the second Survey control case (5), three input ends of described window comparator (821) are connected to the output terminal of primary environment temperature sensor (11) respectively, upper limit reference voltage source A and lower limit reference voltage source B, the output terminal of described window comparator (821) is connected to the control end of relay (823) by not gate (822).
4. HVDC (High Voltage Direct Current) transmission system temperature collection device according to claim 1, it is characterized in that, described commutation circuit (8) comprises the first single-chip microcomputer (831), first switching tube (832), second switch pipe (833), the input end of described first switching tube (832) and second switch pipe (833) is connected to the output terminal of primary environment temperature sensor (11) and environment temperature sensor for subsequent use (12) respectively, the output terminal of described first switching tube (832) and second switch pipe (833) is all connected to the input end of the first Survey control case (2) and the second Survey control case (5), the input end of described first single-chip microcomputer (831) is connected between primary environment temperature sensor (11) and the first switching tube (832), two output terminals of described first single-chip microcomputer (831) are electrically connected with the control end of the first switching tube (832) and second switch pipe (833) respectively.
5. HVDC (High Voltage Direct Current) transmission system temperature collection device according to claim 1, it is characterized in that, described commutation circuit (8) comprises second singlechip (841), 3rd switching tube (842), 4th switching tube (843), the input end of described 3rd switching tube (842) and the 4th switching tube (843) is connected to the output terminal of primary environment temperature sensor (11) and environment temperature sensor for subsequent use (12) respectively, the output terminal of described 3rd switching tube (842) and the 4th switching tube (843) is all connected to the input end of the first Survey control case (2) and the second Survey control case (5), two input ends of described second singlechip (841) are connected between primary environment temperature sensor (11) and the 3rd switching tube (842) respectively, and between environment temperature sensor for subsequent use (12) and the 4th switching tube (843), two output terminals of described second singlechip (841) are electrically connected with the control end of the 3rd switching tube (842) and the 4th switching tube (843) respectively.
6. the HVDC (High Voltage Direct Current) transmission system temperature collection device according to any one of claim 1-5, is characterized in that, described first Survey control case (2) and the second Survey control case (5) are SU200 device.
7. HVDC (High Voltage Direct Current) transmission system temperature collection device according to claim 6, it is characterized in that, described first Survey control case (2) is all connected by fieldbus with between the first optical fiber link module (3) and between the second Survey control case (5) with the second optical fiber link module (6).
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| CN201420752690.1U CN204241113U (en) | 2014-12-03 | 2014-12-03 | A kind of HVDC (High Voltage Direct Current) transmission system temperature collection device |
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| CN201420752690.1U CN204241113U (en) | 2014-12-03 | 2014-12-03 | A kind of HVDC (High Voltage Direct Current) transmission system temperature collection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105423482A (en) * | 2015-10-30 | 2016-03-23 | 四川长虹电器股份有限公司 | Temperature detection method and air conditioner |
| CN106655514A (en) * | 2016-12-30 | 2017-05-10 | 衡阳泰豪通信车辆有限公司 | Intelligent power distribution system and emergency protection method for communication vehicle |
| CN106725332A (en) * | 2016-12-31 | 2017-05-31 | 江苏美伦影像***有限公司 | A kind of body temperature acquisition system |
| CN107967898A (en) * | 2017-11-01 | 2018-04-27 | 昆山龙腾光电有限公司 | Backlight regulating circuit and backlight adjusting method |
| CN109632146A (en) * | 2019-01-30 | 2019-04-16 | 浙江帕博电力科技有限公司 | Power equipment temperature monitoring system and radio temperature sensor |
| CN113783668A (en) * | 2021-09-08 | 2021-12-10 | 新华三信息安全技术有限公司 | Communication method, device, equipment and storage medium |
| CN113916403A (en) * | 2021-10-15 | 2022-01-11 | 北京卫星环境工程研究所 | Dual-channel temperature detection device for thermal vacuum test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105423482A (en) * | 2015-10-30 | 2016-03-23 | 四川长虹电器股份有限公司 | Temperature detection method and air conditioner |
| CN105423482B (en) * | 2015-10-30 | 2019-01-22 | 四川长虹电器股份有限公司 | A kind of temperature checking method and air-conditioning |
| CN106655514A (en) * | 2016-12-30 | 2017-05-10 | 衡阳泰豪通信车辆有限公司 | Intelligent power distribution system and emergency protection method for communication vehicle |
| CN106725332A (en) * | 2016-12-31 | 2017-05-31 | 江苏美伦影像***有限公司 | A kind of body temperature acquisition system |
| CN107967898A (en) * | 2017-11-01 | 2018-04-27 | 昆山龙腾光电有限公司 | Backlight regulating circuit and backlight adjusting method |
| CN109632146A (en) * | 2019-01-30 | 2019-04-16 | 浙江帕博电力科技有限公司 | Power equipment temperature monitoring system and radio temperature sensor |
| CN113783668A (en) * | 2021-09-08 | 2021-12-10 | 新华三信息安全技术有限公司 | Communication method, device, equipment and storage medium |
| CN113783668B (en) * | 2021-09-08 | 2023-01-31 | 新华三信息安全技术有限公司 | Communication method, device, equipment and storage medium |
| CN113916403A (en) * | 2021-10-15 | 2022-01-11 | 北京卫星环境工程研究所 | Dual-channel temperature detection device for thermal vacuum test |
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