CN210667157U - Wireless data receiving device - Google Patents
Wireless data receiving device Download PDFInfo
- Publication number
- CN210667157U CN210667157U CN201922330166.0U CN201922330166U CN210667157U CN 210667157 U CN210667157 U CN 210667157U CN 201922330166 U CN201922330166 U CN 201922330166U CN 210667157 U CN210667157 U CN 210667157U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistor
- voltage
- data receiving
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 97
- 238000006243 chemical reaction Methods 0.000 claims description 36
- 239000011324 bead Substances 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 22
- 238000005259 measurement Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a wireless data receiving arrangement, include: the first voltage input end is connected with a chip power supply voltage pin of the data receiving chip, a first capacitor and one end of a first resistor; the other end of the first resistor is connected with one end of the second resistor and an enabling pin of the data receiving chip; the other end of the second resistor is connected with a reset pin of the data receiving chip; one end of the third resistor is connected with the first input pin of the data receiving chip, the other end of the third resistor is connected with one end of the fourth resistor and the first voltage input end, and the other end of the fourth resistor is connected with the second input pin of the data receiving chip; one end of the fifth resistor is connected with the third input pin of the data receiving chip, and the other end of the fifth resistor is grounded; the ground pin of the data receiving chip is grounded; and the data receiving pin and the data sending pin of the data receiving chip are connected with the singlechip. Use the embodiment of the utility model provides a scheme can realize the wireless transmission of data, improves torque measurement's accuracy.
Description
Technical Field
The utility model relates to a torque measurement technical field particularly, relates to a wireless data receiving arrangement.
Background
With the development of the domestic automobile industry, new models come to the fore, and automobile bench and road tests become more and more important. Modern engines need to increase the rotating speed to improve the mechanical performance and efficiency, and the torque is an important index of the performance of the motor and the engine, so that high-precision and high-reliability torque measurement is needed. And, the measured data needs to be transmitted to an external device.
The existing data transmission is mainly realized in a wired mode, specifically through a conductive slip ring. However, since the conductive slip ring belongs to a friction contact, the contact is unreliable, which causes signal fluctuation, thereby causing large measurement error and even unsuccessful measurement. Therefore, in order to solve the problem of accuracy of torque measurement, a data receiving device is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wireless data receiving arrangement to avoid data transmission to improve the torque measurement's accuracy to the influence of torque measurement accuracy. The specific technical scheme is as follows.
A wireless data receiving apparatus, comprising:
the first voltage input end is connected with a chip power supply voltage pin of the data receiving chip, a first capacitor and one end of a first resistor;
the other end of the first capacitor is grounded; the other end of the first resistor is connected with one end of a second resistor and an enabling pin of the data receiving chip;
the other end of the second resistor is connected with a reset pin of the data receiving chip;
one end of the third resistor is connected with the first input pin of the data receiving chip, the other end of the third resistor is connected with one end of the fourth resistor and the first voltage input end, and the other end of the fourth resistor is connected with the second input pin of the data receiving chip;
one end of the fifth resistor is connected with the third input pin of the data receiving chip, and the other end of the fifth resistor is grounded; the ground pin of the data receiving chip is grounded;
and the data receiving pin and the data sending pin of the data receiving chip are both connected with the singlechip and used for sending the received data to the singlechip.
Optionally, the method further includes:
a first voltage conversion device and a second voltage conversion device;
a first voltage output end of the first voltage conversion device is connected with a second voltage input end of the second voltage conversion device, and a second voltage output end of the second voltage conversion device is connected with the first voltage input end;
the third voltage input end voltage of the first voltage conversion device is 6-32 volts, the first voltage output end voltage is 5 volts, and the second voltage output end voltage is 3.3 volts.
Optionally, the first voltage conversion device includes:
the third voltage input end is connected with the second capacitor, one end of the sixth resistor and a voltage input pin of the switching regulator;
the other end of the second capacitor is grounded; the other end of the sixth resistor is connected with an enabling input pin and a disabling input pin of the switching regulator; the ground pin of the switching regulator is grounded;
a bootstrap voltage pin of the switching regulator is connected with one end of a third capacitor; the other end of the third capacitor is connected with a switch node pin of the switching regulator, one end of the inductor and the cathode of the diode;
the anode of the diode is grounded; the other end of the inductor is connected with one end of a seventh resistor, one end of a fourth capacitor, one end of a fifth capacitor, one end of a sixth capacitor and the first voltage output end;
the other end of the seventh resistor is connected with one end of the eighth resistor and a feedback pin of the switching regulator; the other end of the eighth resistor is grounded;
and the other ends of the fourth capacitor, the fifth capacitor and the sixth capacitor are all grounded.
Optionally, the second capacitance is 4.7 microfarads; the third capacitance is 100 nanofarads; the fourth capacitor is 10 microfarads; the fifth capacitor is 10 microfarads; the sixth capacitance is 100 nanofarads.
Optionally, the sixth resistance is 100 kilo-ohms; the seventh resistance is 54.9 kilo-ohms; the eighth resistance is 10 kilo-ohms.
Optionally, the inductance is 33 microhenries;
the diode is MBR0520LT 1G.
Optionally, the second voltage conversion device includes:
the second voltage input end is connected with one end of the seventh capacitor, one end of the eighth capacitor, and a first voltage input pin and a second voltage input pin of the voltage stabilizer;
the other ends of the seventh capacitor and the eighth capacitor are grounded;
an output voltage pin of the voltage stabilizer is connected with one end of the ninth capacitor, one end of the tenth capacitor, one end of the eleventh capacitor and one end of the magnetic bead;
the other ends of the ninth capacitor, the tenth capacitor and the eleventh capacitor are all grounded; and the other end of the magnetic bead is connected with the second voltage output end.
Optionally, the seventh capacitor is 1 microfarad; the eighth capacitor is 100 nanofarads; the ninth capacitor is 1 microfarad; the tenth capacitance is 100 nanofarads; the eleventh capacitor is 100 picofarads;
the magnetic beads are 0 ohm.
Optionally, the first resistance is 1 megaohm; the third resistor, the fourth resistor and the fifth resistor are all 1 megaohm;
the first capacitance is 470 nanofarads.
Optionally, the data receiving chip is ESP-07S.
As can be seen from the above, the embodiment of the present invention provides a wireless data receiving device, which may include: the first voltage input end is connected with a chip power supply voltage pin of the data receiving chip, a first capacitor and one end of a first resistor; the other end of the first capacitor is grounded; the other end of the first resistor is connected with one end of the second resistor and an enabling pin of the data receiving chip; the other end of the second resistor is connected with a reset pin of the data receiving chip; one end of the third resistor is connected with the first input pin of the data receiving chip, the other end of the third resistor is connected with one end of the fourth resistor and the first voltage input end, and the other end of the fourth resistor is connected with the second input pin of the data receiving chip; one end of the fifth resistor is connected with the third input pin of the data receiving chip, and the other end of the fifth resistor is grounded; the ground pin of the data receiving chip is grounded; the data receiving pin and the data sending pin of the data receiving chip are connected with the single chip microcomputer and used for sending received data to the single chip microcomputer, so that a torque measurement value can be received in a wireless mode, wireless transmission of the data can be achieved, the influence of data transmission on the accuracy of torque measurement in a wired mode can be avoided, and the accuracy of torque measurement is improved. And, compare with carrying out data transmission through wired mode, the data transmission can be carried out more conveniently to the wireless data transmission mode, improves the convenience of moment of torsion measured value transmission. Of course, it is not necessary for any product or method of the invention to achieve all of the above-described advantages at the same time.
The utility model discloses innovation point includes:
1. the torque measurement value is received in a wireless mode, so that wireless transmission of data is realized, the influence of data transmission on the torque measurement accuracy in a wired mode can be avoided, and the torque measurement accuracy is improved. And, compare with carrying out data transmission through wired mode, the data transmission can be carried out more conveniently to the wireless data transmission mode, improves the convenience of moment of torsion measured value transmission.
2. The voltage value suitable for the wireless data transmitting device to work can be obtained through conversion by the voltage conversion device, and normal work of the wireless data transmitting device is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.
Fig. 1 is a schematic structural diagram of a wireless data receiving device according to the present invention;
fig. 2 is a schematic structural diagram of a voltage conversion device according to the present invention;
fig. 3 is a schematic structural diagram of another voltage conversion device according to the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the utility model discloses wireless data receiving arrangement can avoid carrying out data transmission through wired mode to the influence of torque measurement accuracy, improves torque measurement's accuracy. The embodiments of the present invention will be described in detail below.
Fig. 1 is a schematic structural diagram of a wireless data receiving apparatus according to an embodiment of the present invention.
The wireless data receiving apparatus includes:
a first voltage input end, which is connected to a pin 8 of the data receiving chip, i.e. a VCC (voltage supply) pin, a first capacitor C57, and one end of a first resistor R53;
a first capacitor C57, the other end of which is grounded; the other end of the first resistor R53 is connected with one end of the second resistor R50 and a pin 3 of the data receiving chip, namely an EN (enable) pin;
a second resistor R50, the other end of which is connected to pin 1 of the data receiving chip, i.e., the RST (RESET) pin;
a third resistor R2, one end of which is connected to the pin 12 of the data receiving chip, i.e., the first input pin (IO0), the other end of which is connected to one end of the fourth resistor R7 and the first voltage input terminal, and the other end of the fourth resistor R7 is connected to the pin 11 of the data receiving chip, i.e., the second input pin (IO 2);
a fifth resistor R8, one end of which is connected to pin 10 of the data receiving chip, i.e. the third input pin (IO15), and the other end of which is grounded; pin 9 of the data receiving chip, namely, a GND (Ground) pin is grounded;
the data receiving pin 15 of the data receiving chip, namely the RXD0 pin, and the data transmitting pin 16, namely the TXD0 pin, are connected to the single chip for transmitting the received data to the single chip.
The utility model provides a wireless data receiving arrangement also can be called the WIFI module. The wireless data receiving device can be matched with the wireless data transmitting device in the torque measuring equipment for use, and the wireless data receiving device can receive the torque measured value transmitted by the wireless data transmitting device.
The data receiving chip can be ESP-07S, the input voltage range of the ESP-07S chip is 3V-3.6V, and the current is 80mA during normal operation. ESP-07S chip serial ports WIFI _ IN _ TX and WIFI _ IN _ RX are connected with the single chip microcomputer serial ports UART2_ RX and UART2_ TX, and received data are sent to the single chip microcomputer through the serial ports.
The first resistor R53 is 1 megaohm; the third resistor R2, the fourth resistor R7 and the fifth resistor R8 are all 1 megaohm; the first capacitance C57 is 470 nanofarads.
As can be seen from the above, the embodiment of the present invention provides a wireless data receiving device, which may include: the first voltage input end is connected with a chip power supply voltage pin of the data receiving chip, a first capacitor and one end of a first resistor; the other end of the first capacitor is grounded; the other end of the first resistor is connected with one end of the second resistor and an enabling pin of the data receiving chip; the other end of the second resistor is connected with a reset pin of the data receiving chip; one end of the third resistor is connected with the first input pin of the data receiving chip, the other end of the third resistor is connected with one end of the fourth resistor and the first voltage input end, and the other end of the fourth resistor is connected with the second input pin of the data receiving chip; one end of the fifth resistor is connected with the third input pin of the data receiving chip, and the other end of the fifth resistor is grounded; the ground pin of the data receiving chip is grounded; the data receiving pin and the data sending pin of the data receiving chip are connected with the single chip microcomputer and used for sending received data to the single chip microcomputer, so that a torque measurement value can be received in a wireless mode, wireless transmission of the data can be achieved, the influence of data transmission on the accuracy of torque measurement in a wired mode can be avoided, and the accuracy of torque measurement is improved. And, compare with carrying out data transmission through wired mode, the data transmission can be carried out more conveniently to the wireless data transmission mode, improves the convenience of moment of torsion measured value transmission.
As an embodiment of the present invention, the above wireless data transmitting apparatus may further include: a first voltage conversion device and a second voltage conversion device. The first voltage output end of the first voltage conversion device is connected with the second voltage input end of the second voltage conversion device, and the second voltage output end of the second voltage conversion device is connected with the first voltage input end. The third voltage input end voltage of the first voltage conversion device is 6-32 volts, the first voltage output end voltage is 5 volts, and the second voltage output end voltage is 3.3 volts.
That is, the first voltage conversion device, the second voltage conversion device, and the wireless data receiving device may be connected in sequence, so as to obtain a voltage value satisfying the operation requirement of the wireless data receiving device through the first voltage conversion device and the second voltage conversion device.
In one implementation, as shown in fig. 2, a first voltage conversion device includes:
a third Voltage Input end, connected to the second capacitor C33, one end of the sixth resistor R79, and a pin 5 of the switching regulator, i.e., a VIN (Voltage Input) pin;
a second capacitor C33, the other end of which is grounded; a sixth resistor R79, the other end of which is connected to pin 4 of the switching regulator, i.e., SHDN _ N (enable and disable input) pin; pin 2 of the switching regulator, namely, a GND (Ground) pin, is grounded;
the anode of the diode D14 is grounded; the other end of the inductor L2 is connected with a seventh resistor R64, a fourth capacitor C54, a fifth capacitor C55, one end of a sixth capacitor C56 and a first voltage output end;
a seventh resistor R64, the other end of which is connected to one end of the eighth resistor R65 and to pin 3 of the switching regulator, i.e., FB (feedback) pin; an eighth resistor R65, the other end of which is grounded;
the other ends of the fourth capacitor C54, the fifth capacitor C55 and the sixth capacitor C56 are all grounded.
The switching regulator may be LMR16006 XDDCR. In the first voltage conversion device, the voltage of 6-32V is converted into the voltage of 5V by the switching regulator. The chip LMR16006XDDCR has a wide working input voltage of 1.4V to 36V, and the output voltage of 2.5V to 15V is adjustable.
The second capacitor C33 is 4.7 microfarads; the third capacitor C32 is 100 nanofarads; the fourth capacitor C54 is 10 microfarads; the fifth capacitor C55 is 10 microfarads; the sixth capacitor C56 is 100 nanofarads. The function of each capacitor is filtering. The second capacitor C33, the fourth capacitor C54 and the fifth capacitor C55 also have the function of energy storage.
The sixth resistor R79 is 100 kilo-ohms; the seventh resistor R64 is 54.9 kohms; the eighth resistor R65 is 10 kilo-ohms. The seventh resistor R64 and the eighth resistor R65 function to regulate the output voltage.
The inductance L2 is 33 microhenries and functions to store energy. Diode D14 is MBR0520LT1G, which acts to prevent reverse connection.
In one implementation, as shown in fig. 3, the second voltage conversion apparatus includes:
a second Voltage Input end, connected to one end of the seventh capacitor C25 and one end of the eighth capacitor C26, and pin 2 and pin 4 of the Voltage regulator, i.e., VIN (Voltage Input) pin;
the other ends of the seventh capacitor C25 and the eighth capacitor C26 are grounded;
the ninth capacitor C27, the tenth capacitor C28 and the eleventh capacitor C24 are all grounded at the other end; the other end of the magnetic bead R17 is connected with a second voltage output end.
The voltage regulator may be MCP 1700T-3302E/MB. In the second voltage conversion device, the 5V voltage is output to 3.3V voltage through the low-dropout voltage stabilizer to supply power to the wireless data receiving device and the singlechip. The input voltage range of the voltage stabilizer is 2.3V-6V, the output voltage is 3.3V, and the output current is 250 mA.
The seventh capacitor C25 is 1 microfarad; the eighth capacitor C26 is 100 nanofarads; the ninth capacitor C27 is 1 microfarad; the tenth capacitor C28 is 100 nanofarads; the eleventh capacitor C24 is 100 picofarads; the magnetic bead R17 was 0 ohms.
The function of each capacitor and resistor is filtering. The seventh capacitor C25 and the ninth capacitor C27 also have the function of energy storage. The magnetic beads R17 function as tamper-proof.
The voltage value suitable for the wireless data receiving device to work can be obtained through conversion of the voltage conversion device, and normal work of the wireless data receiving device is guaranteed.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. A wireless data receiving apparatus, comprising:
the first voltage input end is connected with a chip power supply voltage pin of the data receiving chip, a first capacitor (C57) and one end of a first resistor (R53);
the other end of the first capacitor (C57) is grounded; the other end of the first resistor (R53) is connected with one end of a second resistor (R50) and an enabling pin of the data receiving chip;
the other end of the second resistor (R50) is connected with a reset pin of the data receiving chip;
a third resistor (R2) having one end connected to the first input pin of the data receiving chip and the other end connected to one end of a fourth resistor (R7) and the first voltage input terminal, the other end of the fourth resistor (R7) being connected to the second input pin of the data receiving chip;
a fifth resistor (R8), one end of which is connected to the third input pin of the data receiving chip and the other end of which is grounded; the ground pin of the data receiving chip is grounded;
and the data receiving pin and the data sending pin of the data receiving chip are both connected with the singlechip and used for sending the received data to the singlechip.
2. The wireless data receiving apparatus according to claim 1, further comprising:
a first voltage conversion device and a second voltage conversion device;
a first voltage output end of the first voltage conversion device is connected with a second voltage input end of the second voltage conversion device, and a second voltage output end of the second voltage conversion device is connected with the first voltage input end;
the third voltage input end voltage of the first voltage conversion device is 6-32 volts, the first voltage output end voltage is 5 volts, and the second voltage output end voltage is 3.3 volts.
3. The wireless data receiving device according to claim 2, wherein the first voltage conversion means includes:
the third voltage input end is connected with the second capacitor (C33), one end of a sixth resistor (R79) and a voltage input pin of the switching regulator;
the other end of the second capacitor (C33) is grounded; the other end of the sixth resistor (R79) is connected with an enabling input pin and a disabling input pin of the switching regulator; the ground pin of the switching regulator is grounded;
the bootstrap voltage pin of the switching regulator is connected with one end of a third capacitor (C32); the other end of the third capacitor (C32) is connected with a switch node pin of the switching regulator, one end of an inductor (L2) and the negative electrode of a diode (D14);
the anode of the diode (D14) is grounded; the other end of the inductor (L2) is connected with one end of a seventh resistor (R64), a fourth capacitor (C54), a fifth capacitor (C55), one end of a sixth capacitor (C56) and the first voltage output end;
the other end of the seventh resistor (R64) is connected with one end of an eighth resistor (R65) and a feedback pin of the switching regulator; the other end of the eighth resistor (R65) is grounded;
the other ends of the fourth capacitor (C54), the fifth capacitor (C55) and the sixth capacitor (C56) are all grounded.
4. The wireless data receiving device according to claim 3,
the second capacitance (C33) is 4.7 microfarads; the third capacitance (C32) is 100 nanofarads; the fourth capacitance (C54) is 10 microfarads; the fifth capacitance (C55) is 10 microfarads; the sixth capacitor (C56) is 100 nanofarads.
5. The wireless data receiving device according to claim 3,
the sixth resistance (R79) is 100 kilo-ohms; the seventh resistance (R64) is 54.9 kilo-ohms; the eighth resistance (R65) is 10 kilo-ohms.
6. The wireless data receiving device according to claim 3,
the inductance (L2) is 33 microHenry;
the diode (D14) is MBR0520LT 1G.
7. The wireless data receiving device according to claim 2, wherein the second voltage conversion means includes:
the second voltage input end is connected with one end of a seventh capacitor (C25), one end of an eighth capacitor (C26), and a first voltage input pin and a second voltage input pin of the voltage stabilizer;
the other ends of the seventh capacitor (C25) and the eighth capacitor (C26) are grounded;
an output voltage pin of the voltage stabilizer is connected with one end of a ninth capacitor (C27), a tenth capacitor (C28), an eleventh capacitor (C24) and one end of a magnetic bead (R17);
the other ends of the ninth capacitor (C27), the tenth capacitor (C28) and the eleventh capacitor (C24) are all grounded; and the other end of the magnetic bead (R17) is connected with the second voltage output end.
8. The wireless data receiving device according to claim 7,
the seventh capacitance (C25) is 1 microfarad; the eighth capacitor (C26) is 100 nanofarads; the ninth capacitance (C27) is 1 microfarad; the tenth capacitance (C28) is 100 nanofarads; the eleventh capacitor (C24) is 100 picofarads;
the magnetic bead (R17) is 0 ohm.
9. The wireless data reception apparatus according to any one of claims 1 to 8,
the first resistance (R53) is 1 megaohm; the third resistor (R2), the fourth resistor (R7), and the fifth resistor (R8) are all 1 megaohm;
the first capacitance (C57) is 470 nanofarads.
10. The wireless data reception apparatus according to any one of claims 1 to 8,
the data receiving chip is ESP-07S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922330166.0U CN210667157U (en) | 2019-12-23 | 2019-12-23 | Wireless data receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922330166.0U CN210667157U (en) | 2019-12-23 | 2019-12-23 | Wireless data receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210667157U true CN210667157U (en) | 2020-06-02 |
Family
ID=70812506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922330166.0U Withdrawn - After Issue CN210667157U (en) | 2019-12-23 | 2019-12-23 | Wireless data receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210667157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838227A (en) * | 2019-12-23 | 2020-02-25 | 北京百联长通科技有限公司 | Wireless data receiving device |
-
2019
- 2019-12-23 CN CN201922330166.0U patent/CN210667157U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838227A (en) * | 2019-12-23 | 2020-02-25 | 北京百联长通科技有限公司 | Wireless data receiving device |
| CN110838227B (en) * | 2019-12-23 | 2024-04-30 | 北京百联长通科技有限公司 | Wireless data receiving device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207625682U (en) | Video monitoring equipment | |
| CN107508354B (en) | A kind of charging method and mobile terminal | |
| CN210667157U (en) | Wireless data receiving device | |
| US9356471B2 (en) | Power supply circuit | |
| CN106787230A (en) | Wireless charging system and its intellectual water meter being made and intellectual water meter charging method | |
| CN211602244U (en) | Torque measuring equipment | |
| CN211602245U (en) | Torque measuring equipment | |
| CN110838227A (en) | Wireless data receiving device | |
| CN210867649U (en) | Digital-to-analog conversion device | |
| CN210983734U (en) | Data transmission equipment | |
| CN210667163U (en) | Data communication device | |
| CN211183935U (en) | Digital-to-analog conversion device | |
| CN210667156U (en) | Wireless data transmitting device | |
| CN210324546U (en) | Wireless collector and control system comprising same | |
| CN111257662A (en) | Device and corresponding method applied to wireless charging equipment detection | |
| CN110827529B (en) | Data transmission equipment | |
| CN210867505U (en) | Data display equipment | |
| CN211239866U (en) | Quasi-bidirectional out-of-band communication circuit based on POE network line | |
| CN110995266B (en) | Digital-to-analog conversion device | |
| CN210867681U (en) | CAN communication device | |
| CN218214118U (en) | Data communication circuit | |
| CN112968482A (en) | Battery management system | |
| CN110853326A (en) | Wireless data transmitting device | |
| CN110910627A (en) | Data communication device | |
| CN110873618A (en) | Torque measuring equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200602 Effective date of abandoning: 20240430 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200602 Effective date of abandoning: 20240430 |