CN209784441U - Data acquisition equipment of remote meter reading system - Google Patents
Data acquisition equipment of remote meter reading system Download PDFInfo
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- CN209784441U CN209784441U CN201920204656.3U CN201920204656U CN209784441U CN 209784441 U CN209784441 U CN 209784441U CN 201920204656 U CN201920204656 U CN 201920204656U CN 209784441 U CN209784441 U CN 209784441U
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Abstract
The utility model relates to a data acquisition device of a remote meter reading system, which comprises a shell, a control circuit board, a voltage sensor, a low-voltage monitoring part, a normal-pressure monitoring part and a high-voltage monitoring part; the low-voltage monitoring part comprises a low-voltage detection circuit and a low-voltage reminding circuit so as to realize the prompt that the current power utilization voltage of a user is low; the normal pressure monitoring part comprises a normal pressure detection circuit and a normal pressure reminding circuit so as to realize the prompt that the current power voltage of a user is normal; the high-voltage monitoring part comprises a high-voltage detection circuit and a high-voltage reminding circuit so as to realize the prompt that the current power utilization voltage of a user is high. The utility model discloses a set up low pressure monitoring portion, ordinary pressure monitoring portion and high pressure monitoring portion so that know user's power consumption condition in real time to in time remind the user to cut off some electrical apparatus when user's power consumption condition is more and produce the high pressure, and then can guarantee user's safety.
Description
Technical Field
The utility model belongs to the technical field of the technique of the system of checking meter and specifically relates to a data acquisition equipment of long-range system of checking meter is related to.
background
the remote meter reading system is designed for realizing the remote reading of data of three meters (an ammeter, a water meter and a gas meter) reliably in real time, when the remote meter reading system works, the remote meter reading system is directly electrically connected with the three meters in a user house and can detect the three meters in the user house in real time, the ammeter can detect the electricity utilization voltage condition of the user in real time, along with the increase of household electrical appliances in recent years, the safety accidents caused by the increase of the voltage pressure in the user building are increased, and partial users often do not know the harm caused by excessive use of the electrical appliances, so the remote meter reading system is necessary to detect the electricity utilization voltage condition of the user in the process of reading the ammeter data in real time and remind the user in time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a data acquisition equipment of long-range system of checking meter can remind user's voltage condition in real time, guarantees user's power consumption safety
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the data acquisition equipment of the remote meter reading system comprises a shell and a control circuit board arranged in the shell, wherein the control circuit board comprises a power circuit and a single chip microcomputer module, the single chip microcomputer module is connected with a communication interface, a 3G module, an MODEM module and an INTERNET communication module, a voltage sensor is arranged on the outer side wall of the shell and used for detecting the voltage of a user electric meter and converting the voltage into a voltage signal, a stage voltage recording device coupled with the voltage sensor is further arranged in the shell, and the stage voltage recording device comprises a voltage sensor, a low-voltage monitoring part, a normal-voltage monitoring part and a high-voltage monitoring part;
The low-voltage monitoring part comprises a low-voltage detection circuit and a low-voltage reminding circuit, the low-voltage detection circuit is coupled to the voltage sensor to receive a voltage signal and output a low-voltage signal, and the low-voltage reminding circuit is coupled to the low-voltage detection circuit to receive the low-voltage signal and responds to the low-voltage signal to prompt the current user that the power voltage is low;
The normal pressure monitoring part comprises a normal pressure detection circuit and a normal pressure reminding circuit, the normal pressure detection circuit is coupled to the voltage sensor to receive a voltage signal and output a normal pressure signal, and the normal pressure reminding circuit is coupled to the normal pressure detection circuit to receive the normal pressure signal and responds to the normal pressure signal to prompt that the current user power voltage is normal;
the high-voltage monitoring part comprises a high-voltage detection circuit and a high-voltage reminding circuit, the high-voltage detection circuit is coupled to the voltage sensor to receive the voltage signal and output the high-voltage signal, and the high-voltage reminding circuit is coupled to the high-voltage detection circuit to receive the high-voltage signal and responds to the high-voltage signal to prompt the current user that the power utilization voltage is high.
By adopting the technical scheme, in the process of reading the electric meter data, different voltage data values appear in the electric meter due to different electricity utilization conditions of users, the voltage sensor is arranged to sense the voltage in the electric meter in real time and convert the voltage into a voltage signal to be transmitted to the low-voltage monitoring part, the normal-voltage monitoring part and the high-voltage monitoring part, and if the voltage generated in the electric meter is in the detection range of the low-voltage detection circuit, the low-voltage reminding circuit prompts to indicate that the electricity utilization of the users is less; if the voltage generated in the ammeter is in the detection range of the normal-pressure detection circuit, the normal-pressure reminding circuit prompts to indicate that the electricity consumption of the user is normal; if the voltage generated in the ammeter is in the detection range of the high-voltage detection circuit, the high-voltage reminding circuit gives a prompt to indicate that the electricity consumption of the user is more, and the user needs to be reminded in time; this kind is through setting up low pressure monitoring portion, ordinary pressure monitoring portion and high pressure monitoring portion so that know user's power consumption condition in real time to in the time of user's power consumption condition is more and produce high pressure, in time remind the user to cut off partial electrical apparatus, and then can guarantee user's safety.
Preferably, the low voltage detection circuit includes a low voltage comparison circuit and a low voltage reference circuit, the low voltage warning circuit includes a first light emitting diode, the low voltage reference circuit is used for providing a low voltage upper limit signal for the low voltage comparison circuit, the low voltage comparison circuit is coupled to the voltage sensor for receiving the voltage signal and outputting the low voltage comparison signal after comparing with the low voltage upper limit signal, and the first light emitting diode is coupled to an output end of the low voltage comparison circuit for receiving the low voltage comparison signal and giving out a light prompt.
Through adopting above-mentioned technical scheme, when user's power consumption condition was less, the ammeter was in the low pressure state, and the voltage signal that the sensor detected at this moment is only higher than low pressure upper limit signal, and low pressure detection circuitry work and trigger first emitting diode at this moment and give out light the suggestion.
Preferably, the ordinary pressure detection circuitry includes ordinary pressure comparison circuit, ordinary pressure reference circuit, the ordinary pressure warning circuit includes that the signal interrupts output circuit, second emitting diode, ordinary pressure reference circuit is used for giving the ordinary pressure comparison circuit provides ordinary pressure upper limit signal, ordinary pressure comparison circuit coupling is in after voltage sensor compares with ordinary pressure upper limit signal with receiving voltage signal, signal interrupt output circuit coupling is in with receiving ordinary pressure comparison signal and output interruption signal of output, the second emitting diode coupling is in signal interrupt output circuit carries out the scintillation suggestion in order to receive interruption signal.
Through adopting above-mentioned technical scheme, when user's power consumption condition is comparatively steady, the ammeter is in the state of steady voltage, and the voltage signal that the sensor detected this moment is higher than ordinary pressure upper limit signal, and ordinary pressure detection circuitry work this moment triggers first emitting diode and carries out the luminous suggestion of scintillation.
Preferably, high pressure detection circuitry includes high pressure comparison circuit, high pressure reference circuit, high pressure warning circuit includes the sound production alarm, high pressure reference circuit is used for high pressure comparison circuit provides high pressure upper limit signal, high pressure comparison circuit coupling is in voltage sensor with receive voltage signal after and with high pressure upper limit signal carry out the comparison after output high pressure comparison signal, the sound production alarm coupling is in high pressure comparison circuit's output is in order to receive high pressure comparison signal and carry out the sound production suggestion.
through adopting above-mentioned technical scheme, when user's power consumption condition is comparatively many, the ammeter is in the state of high voltage, and the voltage signal that the sensor detected this moment is higher than high-pressure upper limit signal, and high-voltage detection circuit work this moment triggers the audible alarm ware and carries out the sound prompt.
Preferably, the signal discontinuity output circuit includes a filter circuit, resistors R9, R11, R12, a capacitor C1, and a comparator a4, wherein one end of each of the resistors R9 and R11 is coupled to the output end of the normal voltage comparator circuit, one end of the resistor R9 is coupled to one end of the capacitor C1, the other end of the capacitor C1 is coupled to the filter circuit, the other end of the capacitor C1 and the other end of the resistor R11 are coupled to the same-phase end of the comparator a4, the inverting end of the comparator a4 is grounded through the resistor R12, and the output end of the comparator a4 is coupled to the second light emitting diode.
By adopting the technical scheme, the signal discontinuous output circuit outputs discontinuous signals after receiving the normal pressure signals and after internal transmission, so that the light emitting diode is in a discontinuous working state, and the second light emitting diode can be used for flicker prompt.
Preferably, the voltage sensor comprises a fixing part arranged on the outer side wall of the shell, and a pressure measuring part connected to the end part of the fixing part and protruding out of the outer side wall of the shell, and a connecting hole clamped with the fixing part is formed in the outer side wall of the shell corresponding to the position of the fixing part.
Through adopting above-mentioned technical scheme, through setting up the connecting hole with the fixed part joint to make voltage sensor can dismantle and connect on the casing, make voltage sensor when long operating time and damage, so that change voltage sensor.
Preferably, the hole wall of the connecting hole is provided with a fastening groove along the circumferential direction, and the outer side wall of the fixing part is provided with a soft fastening ring clamped with the fastening groove.
Through adopting above-mentioned technical scheme, through setting up the fastening groove and the soft fastening block of mutual joint to improve the connection steadiness between voltage sensor and the connecting hole.
To sum up, the utility model discloses a beneficial technological effect does:
Through setting up low pressure monitoring portion, ordinary pressure monitoring portion and high pressure monitoring portion so that know user's power consumption condition in real time to in the time of user's power consumption condition is more and produce the high pressure, in time remind the user to cut off partial electrical apparatus, and then can guarantee user's safety.
drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic circuit diagram of the medium voltage recording device of the present invention.
In the figure, 1, a housing; 11. a control circuit board; 2. a voltage recording device; 3. a voltage sensor; 31. a fixed part; 311. a flexible fastening ring; 32. a pressure measuring part; 4. a low-voltage monitoring section; 41. a low voltage detection circuit; 411. a low voltage comparison circuit; 412. a low voltage reference circuit; 42. a low voltage alert circuit; 421. a first light emitting diode; 5. a normal pressure monitoring part; 51. a normal pressure detection circuit; 511. a normal pressure comparison circuit; 512. a normal pressure reference circuit; 52. a normal pressure reminding circuit; 521. a signal discontinuity output circuit; 522. a second light emitting diode; 6. a high voltage monitoring section; 61. a high voltage detection circuit; 611. a high voltage comparison circuit; 612. a high voltage reference circuit; 62. a high voltage alert circuit; 621. a sounding alarm; 7. a filter circuit; 8. connecting holes; 81. and (5) fastening the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a data acquisition equipment of long-range system of checking meter, including casing 1, set up the control circuit board 11 in casing 1, control circuit board 11 includes power supply circuit, single chip module, and single chip module is connected with communication interface, 3G module, MODEM module, INTERNET communication module.
Referring to fig. 1 and 2, a voltage sensor 3 is arranged on an outer side wall of a housing 1, the voltage sensor 3 is used for detecting a voltage of a user electric meter and converting the voltage into a voltage signal, the type of the voltage sensor 3 is preferably CHVS-ASV, the voltage sensor 3 includes a fixing portion 31 arranged on the outer side wall of the housing 1 and a pressure measuring portion 32 connected to the fixing portion 31, the pressure measuring portion 32 protrudes out of the outer side wall of the housing 1, and a connecting hole 8 clamped with the fixing portion 31 is formed in a position, corresponding to the fixing portion 31, on the outer side wall of; fastening grooves 81 are formed in the hole wall of the connecting hole 8 along the circumferential direction, a soft fastening ring 311 clamped with the fastening grooves 81 is arranged on the outer side wall of the fixing portion 31 corresponding to the fastening grooves 81 along the circumferential direction, and the soft fastening ring 311 is made of rubber materials.
Referring to fig. 1 and 3, a phase voltage recording device 2 coupled to a voltage sensor 3 is further disposed in the housing 1, and the phase voltage recording device 2 includes the voltage sensor 3, a low voltage monitoring part 4, a normal voltage monitoring part 5, and a high voltage monitoring part 6.
The low voltage monitoring part 4 includes a low voltage detection circuit 41 and a low voltage reminding circuit 42, the low voltage detection circuit 41 is coupled to the voltage sensor 3 to receive the voltage signal and output the low voltage signal, and the low voltage reminding circuit 42 is coupled to the low voltage detection circuit 41 to receive the low voltage signal and respond to the low voltage signal to prompt the user that the current power voltage is low.
The low voltage detection circuit 41 includes a low voltage comparison circuit 411 and a low voltage reference circuit 412, the low voltage reference circuit 412 is used for providing a low voltage upper limit signal to the low voltage comparison circuit 411, the low voltage upper limit signal is voltage data in the electricity meter when the electricity consumption of the user is small, preferably, the number of times of returning home of the user is small when the user lives outside for a long time, and the low voltage comparison circuit 411 is coupled to the voltage sensor 3 to receive the voltage signal and then output a low voltage comparison signal after comparing with the low voltage upper limit signal.
The low voltage comparison circuit 411 comprises a resistor R1 and a comparator a1, wherein the type of the comparator a1 is preferably LM311, the common terminal of the comparator a1 is coupled to the voltage sensor 3 through the resistor R1 for receiving a voltage signal, and the reverse terminal of the comparator a1 is coupled to the low voltage reference circuit 412; the low-voltage reference circuit 412 comprises a resistor R2 and a potentiometer Rp1, the model of the potentiometer Rp1 is preferably 3296X-502, a voltage Vcc is sequentially connected with the resistor R2 and the potentiometer Rp1, the potentiometer Rp1 is grounded, an upper limit signal Vref1 is provided at a connection point between the resistor R2 and the potentiometer Rp1, and the size of the upper limit signal Vref1 can be adjusted by adjusting the potentiometer Rp 1.
the low-voltage reminding circuit 42 comprises a resistor R7, a triode Q1 and a first light-emitting diode 421, wherein the base of the triode Q1 is coupled to the output end of the comparator a1 through the resistor R7 to receive a low-voltage comparison signal, the emitter of the triode Q1 is grounded, the collector is coupled to the anode of the first light-emitting diode 421, the cathode of the first light-emitting diode 421 is grounded, and the first light-emitting diode 421 receives the low-voltage comparison signal and then gives out a light prompt.
The normal pressure monitoring part 5 includes a normal pressure detection circuit 51 and a normal pressure reminding circuit 52, the normal pressure detection circuit 51 is coupled to the voltage sensor 3 to receive the voltage signal and output the normal pressure signal, and the normal pressure reminding circuit 52 is coupled to the normal pressure detection circuit 51 to receive the normal pressure signal and respond to the normal pressure signal to prompt the normal prompt of the current user power voltage.
The normal pressure detection circuit 51 includes a normal pressure comparison circuit 511 and a normal pressure reference circuit 512, the normal pressure reference circuit 512 is configured to provide a normal pressure upper limit signal to the normal pressure comparison circuit 511, the normal pressure upper limit signal is voltage data in the electricity meter when the electricity consumption condition of the user is normal, preferably, the user inhales at home and generates voltage data after returning home, and the normal pressure comparison circuit 511 is coupled to the voltage sensor 3 to receive the voltage signal and then compares the voltage signal with the normal pressure upper limit signal to output a normal pressure comparison signal.
The normal voltage comparison circuit 511 comprises a resistor R3 and a comparator a2, wherein the type of the comparator a2 is preferably LM311, the homodromous terminal of the comparator a2 is coupled to the voltage sensor 3 through the resistor R3 for receiving a voltage signal, and the inverting terminal of the comparator a2 is coupled to the normal voltage reference circuit 512; the normal-voltage reference circuit 512 comprises a resistor R4 and a potentiometer Rp2, the model of the potentiometer Rp2 is preferably 3296X-502, a voltage Vcc is sequentially connected with the resistor R4 and the potentiometer Rp2, the potentiometer Rp2 is grounded, an upper limit signal Vref1 is provided at a connection point between the resistor R4 and the potentiometer Rp2, and the size of the upper limit signal Vref1 can be adjusted by adjusting the potentiometer Rp 2.
The normal pressure warning circuit 52 includes a signal interruption output circuit 521 and a second light emitting diode 522, wherein the signal interruption output circuit 521 is coupled to the output terminal of the normal pressure comparing circuit 511 for receiving the normal pressure comparing signal and outputting an interruption signal, and the second light emitting diode 522 is coupled to the signal interruption output circuit 521 for receiving the interruption signal and performing a flashing prompt.
The signal discontinuity output circuit 521 includes a filter circuit 7, resistors R9, R11, R12, a capacitor C1 and a comparator a4, the type of the comparator a4 is preferably LM311, one ends of the resistors R9 and R11 are coupled to the output end of the comparator a1, one end of a resistor R9 is coupled to one end of the capacitor C1, the other end of the capacitor C1 is coupled to the filter circuit 7, the other end of the capacitor C1 and the other end of the resistor R11 are coupled to the same phase end of the comparator a4, the opposite phase end of the comparator a4 is grounded through the resistor R12, the output end of the comparator a4 is coupled to the anode end of the second light emitting diode, and the cathode end of the second light emitting diode 522 is grounded; the filter circuit 7 includes a resistor R10 and a capacitor C2 connected in parallel, one end of the resistor R10 and one end of the capacitor C2 are both coupled to the non-inverting terminal of the comparator a4, and the other end of the resistor R4 and the other end of the capacitor C2 are both grounded.
The high voltage monitoring part 6 includes a high voltage detection circuit 61 and a high voltage reminding circuit 62, the high voltage detection circuit 61 is coupled to the voltage sensor 3 to receive the voltage signal and output the high voltage signal, and the high voltage reminding circuit 62 is coupled to the high voltage detection circuit 61 to receive the high voltage signal and respond to the high voltage signal to prompt the user that the power voltage is high.
the high voltage detection circuit 61 includes a high voltage comparison circuit 611 and a high voltage reference circuit 612, the high voltage reference circuit 612 is configured to provide a high voltage upper limit signal to the high voltage comparison circuit 611, the high voltage upper limit signal is voltage data in the electric meter with many electricity consumption situations for a user, preferably, the user lives at home, and turns on more voltage data generated by the household appliances after returning home, and the high voltage comparison circuit 611 is coupled to the voltage sensor 3 to receive the voltage signal and compare with the high voltage upper limit signal to output the high voltage comparison signal.
The high voltage comparison circuit 611 comprises a resistor R5 and a comparator A3, the type of the comparator A3 is preferably LM311, the homodromous terminal of the comparator A3 is coupled to the voltage sensor 3 through the resistor R5 for receiving the voltage signal, and the inverting terminal of the comparator A3 is coupled to the high voltage reference circuit 612; the high-voltage reference circuit 612 comprises a resistor R6 and a potentiometer Rp3, the model of the potentiometer Rp3 is preferably 3296X-502, a voltage Vcc is sequentially connected with the resistor R2 and the potentiometer Rp3, the potentiometer Rp3 is grounded, an upper limit signal Vref1 is provided at a connection point between the resistor R6 and the potentiometer Rp1, and the size of the upper limit signal Vref1 can be adjusted by adjusting the potentiometer Rp 3.
High voltage warning circuit 62 includes resistance R8, triode Q2, audible alarm 621, and triode Q2's base is coupled in comparator A3's output through resistance R8, and triode Q2's emitter ground connection, collecting electrode are coupled in audible alarm 621's one end, and audible alarm 621's the other end is coupled in Vcc voltage, and audible alarm 621 carries out the vocal suggestion after receiving high-pressure comparison signal.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a data acquisition equipment of long-range system of checking meter, include casing (1), set up in control circuit board (11) in casing (1), control circuit board (11) include power supply circuit, single chip module is connected with communication interface, 3G module, MODEM module, INTERNET communication module, its characterized in that: the device comprises a shell (1) and is characterized in that a voltage sensor (3) is arranged on the outer side wall of the shell (1), the voltage sensor (3) is used for detecting the voltage of a user ammeter and converting the voltage into a voltage signal, a stage voltage recording device (2) coupled to the voltage sensor (3) is further arranged in the shell (1), and the stage voltage recording device (2) comprises the voltage sensor (3), a low-voltage monitoring part (4), a normal-voltage monitoring part (5) and a high-voltage monitoring part (6);
The low-voltage monitoring part (4) comprises a low-voltage detection circuit (41) and a low-voltage reminding circuit (42), wherein the low-voltage detection circuit (41) is coupled to the voltage sensor (3) to receive a voltage signal and output a low-voltage signal, and the low-voltage reminding circuit (42) is coupled to the low-voltage detection circuit (41) to receive the low-voltage signal and responds to the low-voltage signal to prompt a current user that the power voltage is low;
The normal pressure monitoring part (5) comprises a normal pressure detection circuit (51) and a normal pressure reminding circuit (52), wherein the normal pressure detection circuit (51) is coupled to the voltage sensor (3) to receive a voltage signal and output a normal pressure signal, and the normal pressure reminding circuit (52) is coupled to the normal pressure detection circuit (51) to receive the normal pressure signal and respond to the normal pressure signal to prompt the current user that the power voltage is normal;
The high-voltage monitoring part (6) comprises a high-voltage detection circuit (61) and a high-voltage reminding circuit (62), wherein the high-voltage detection circuit (61) is coupled to the voltage sensor (3) to receive a voltage signal and output a high-voltage signal, and the high-voltage reminding circuit (62) is coupled to the high-voltage detection circuit (61) to receive the high-voltage signal and respond to the high-voltage signal to prompt the current user that the power utilization voltage is high.
2. The data acquisition device of the remote meter reading system according to claim 1, wherein: the low-voltage detection circuit (41) comprises a low-voltage comparison circuit (411) and a low-voltage reference circuit (412), the low-voltage reminding circuit (42) comprises a first light-emitting diode (421), the low-voltage reference circuit (412) is used for providing a low-voltage upper limit signal for the low-voltage comparison circuit (411), the low-voltage comparison circuit (411) is coupled to the voltage sensor (3) and outputs a low-voltage comparison signal after receiving the voltage signal and comparing the low-voltage upper limit signal, and the first light-emitting diode (421) is coupled to the output end of the low-voltage comparison circuit (411) and conducts light-emitting prompt after receiving the low-voltage comparison signal.
3. The data acquisition device of the remote meter reading system according to claim 1, wherein: the normal pressure detection circuit (51) comprises a normal pressure comparison circuit (511) and a normal pressure reference circuit (512), the normal pressure reminding circuit (52) comprises a signal interruption output circuit (521) and a second light emitting diode (522), the normal pressure reference circuit (512) is used for providing a normal pressure upper limit signal for the normal pressure comparison circuit (511), the normal pressure comparison circuit (511) is coupled to the voltage sensor (3) and outputs a normal pressure comparison signal after receiving the voltage signal and comparing the voltage signal with the normal pressure upper limit signal, the signal interruption output circuit (521) is coupled to the output end of the normal pressure comparison circuit (511) and outputs an interruption signal, and the second light emitting diode (522) is coupled to the signal interruption output circuit (521) and conducts flicker prompt after receiving the interruption signal.
4. The data acquisition device of the remote meter reading system according to claim 1, wherein: high voltage detection circuitry (61) includes high voltage comparison circuit (611), high voltage reference circuit (612), high voltage warning circuit (62) are including audible alarm (621), high voltage reference circuit (612) are used for giving high voltage comparison circuit (611) provide high pressure upper limit signal, high voltage comparison circuit (611) be coupled in voltage sensor (3) with receive behind the voltage signal and with high pressure upper limit signal output high voltage comparison signal after comparing, audible alarm (621) be coupled in the output of high voltage comparison circuit (611) is in order to receive high voltage comparison signal and carry out audible prompt.
5. The data acquisition device of the remote meter reading system according to claim 3, wherein: the signal break output circuit (521) comprises a filter circuit (7), resistors R9, R11, R12, a capacitor C1 and a comparator a4, wherein one ends of the resistors R9 and R11 are coupled to the output end of the normal voltage comparison circuit (511), one end of the resistor R9 is coupled to one end of the capacitor C1, the other end of the capacitor C1 is coupled to the filter circuit (7), the other end of the capacitor C1 and the other end of the resistor R11 are coupled to the same-phase end of the comparator a4, the inverting end of the comparator a4 is grounded through the resistor R12, and the output end of the comparator a4 is coupled to the second light emitting diode (522).
6. The data acquisition device of the remote meter reading system according to claim 3, wherein: the voltage sensor (3) comprises a fixing part (31) arranged on the outer side wall of the shell (1), and a pressure measuring part (32) connected to the end part of the fixing part (31) and protruding out of the outer side wall of the shell (1), wherein a connecting hole (8) connected with the fixing part (31) in a clamped mode is formed in the outer side wall of the shell (1) corresponding to the position of the fixing part (31).
7. The data acquisition device of the remote meter reading system according to claim 6, wherein: fastening grooves (81) are formed in the hole wall of the connecting hole (8) along the circumferential direction, and soft fastening rings (311) connected with the fastening grooves (81) in a clamped mode are arranged on the outer side wall of the fixing portion (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204656.3U CN209784441U (en) | 2019-02-16 | 2019-02-16 | Data acquisition equipment of remote meter reading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920204656.3U CN209784441U (en) | 2019-02-16 | 2019-02-16 | Data acquisition equipment of remote meter reading system |
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| Publication Number | Publication Date |
|---|---|
| CN209784441U true CN209784441U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920204656.3U Active CN209784441U (en) | 2019-02-16 | 2019-02-16 | Data acquisition equipment of remote meter reading system |
Country Status (1)
| Country | Link |
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| CN (1) | CN209784441U (en) |
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2019
- 2019-02-16 CN CN201920204656.3U patent/CN209784441U/en active Active
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