CN107846231B - NB-IOT network terminal equipment - Google Patents
NB-IOT network terminal equipment Download PDFInfo
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- CN107846231B CN107846231B CN201711189102.2A CN201711189102A CN107846231B CN 107846231 B CN107846231 B CN 107846231B CN 201711189102 A CN201711189102 A CN 201711189102A CN 107846231 B CN107846231 B CN 107846231B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an NB-IOT network terminal device, which comprises a device body and a storage battery arranged in the device body, wherein the storage battery is electrically connected with the device body to supply power to the device body, the device body is provided with a filtering antenna for filtering an interfering wireless signal, the filtering antenna comprises an antenna body, a band-pass filter and a conversion circuit, the band-pass filter is provided with an input end and an output end, the input end is coupled with the antenna body, the output end is coupled with the device body, and the conversion circuit is coupled with the band-pass filter and the storage battery. According to the NB-IOT network terminal equipment, wireless signals can be effectively filtered and removed through the arrangement of the band-pass filter, and the wireless signals can be converted into electric energy to be fed back into the storage battery in the filtering process through the arrangement of the conversion circuit, so that the cruising ability of the terminal equipment is greatly improved.
Description
Technical Field
The invention relates to network equipment, in particular to NB-IOT (network termination equipment).
Background
The cellular-based narrowband Internet of Things (NB-IoT) is an important branch of the Internet of everything. The NB-IoT is constructed in a cellular network, only consumes about 180KHz of bandwidth, and can be directly deployed in a GSM network, a UMTS network or an LTE network so as to reduce the deployment cost and realize smooth upgrading. [1] NB-IoT is an emerging technology in the IoT domain that supports cellular data connectivity for low power devices over wide area networks, also known as low power wide area networks (LPWA). NB-IoT supports efficient connectivity for devices with long standby time and high requirements for network connectivity. It is said that the NB-IoT device battery life can be prolonged to at least 10 years, and at the same time, it can provide very comprehensive indoor cellular data connection coverage, and during the use, it will receive various wireless signals through the antenna, so there are some interference signals in addition to normal communication signals, so the network device needs to process the interference signals, and has filtered out the corresponding interference signals, so the overall power consumption of the device is increased, and the cruising ability of the device is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an NB-IOT network terminal device which can effectively remove interference signals and can keep stronger cruising ability.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a NB-IOT's network terminal equipment, includes the equipment body and sets up at this internal battery of equipment, the battery is connected with the equipment body electricity to supply power for the equipment body, be equipped with on the equipment body and be used for carrying out filterable filtration antenna to the radio signal of interference, it includes antenna body, band pass filter and converting circuit to filter the antenna, band pass filter has input and output, and the input is coupled with the antenna body, and the output is coupled in the equipment body to carry out the post-filter input to the equipment with the radio signal that the antenna body received, converting circuit is coupled in band pass filter, still is coupled with the battery, with the radio signal of receiving band pass filter filtering, and input in the battery after converting into the electric energy, in order to charge for the battery.
As a further improvement of the present invention, the band pass filter includes:
and one end of the inductor L is coupled with the antenna body, the other end of the inductor L is coupled with the capacitor C, then is coupled with the resistor R and then is grounded, one end of the capacitor C is coupled with the inductor L, and the other end of the capacitor C is coupled with the equipment body.
As a further improvement of the present invention, the conversion circuit includes:
the induction coil XQ is mutually inducted with the inductor L, one end of the induction coil XQ is grounded, the other end of the induction coil XQ is coupled with the diode D and then coupled with the storage battery, the cathode of the diode D is coupled with the storage battery, the anode of the diode D is coupled with one end of the induction coil XQ, and the anode of the diode D is further coupled with the boosting capacitor CX and then grounded.
As a further improvement of the present invention, a health detection system is provided on the battery, and the health detection system includes:
the voltage detection circuit is coupled to the output column of the storage battery and used for detecting the output voltage of the storage battery in real time and outputting a voltage value in real time;
the voltage judging circuit is coupled with the voltage detecting circuit and used for receiving a voltage value, wherein the voltage value is provided with a high voltage threshold value and a low voltage threshold value, the voltage value is compared with the high voltage threshold value and the low voltage threshold value, the frequency that the voltage value is greater than the high voltage threshold value and the low voltage threshold value is recorded and output, the frequency threshold value is arranged in the voltage judging circuit, and when the frequency is greater than the frequency threshold value, a fault signal is output;
and the alarm circuit is coupled with the voltage judgment circuit and alarms after receiving the fault signal output by the voltage judgment circuit.
As a further improvement of the present invention, the voltage judging circuit includes:
the voltage judgment chip U1, the voltage judgment chip U1 has a high trigger terminal, a low trigger terminal and an output terminal, the high trigger terminal and the low trigger terminal are coupled to the output column of the storage battery after being short-circuited with each other to receive the electric energy voltage output by the output column of the storage battery, the high voltage threshold is the trigger voltage of the high trigger terminal, the low voltage threshold is the trigger voltage of the low trigger terminal, and when the high trigger terminal or the low trigger terminal is triggered, the output terminal outputs a high level;
the counting circuit is coupled to the output end of the voltage judging chip U1 and used for receiving the high and low levels output by the output end, when the counting circuit receives the high level, the counting circuit counts inside the counting circuit, the counting circuit is also coupled to the alarm circuit and is internally provided with a counting threshold value, and when the counting of the counting circuit is equal to the counting threshold value, the counting circuit outputs a fault signal to the alarm circuit.
As a further improvement of the present invention, the counting circuit includes:
the switching tube Q has a first end, a second end and a control end, the first end is coupled to the power supply, the second end is coupled to the alarm circuit, and the control end is coupled to the output end of the voltage judgment chip U1 after being coupled to the charge-discharge circuit.
As a further improvement of the invention, the voltage detection circuit, the voltage judgment circuit and the alarm circuit are integrated on a circuit board, the alarm circuit comprises a shell and an audible and visual alarm, the shell is detachably fixed on an external storage battery, the integrated circuit board is arranged in the shell, the audible and visual alarm is arranged on the shell, the shell is in a hollow cylindrical shape, one end of the shell is fixedly connected with a wiring board, the circuit board is arranged on the wiring board, a binding post is arranged on one side surface of the wiring board, which is opposite to the shell, the voltage detection circuit is electrically connected with the binding post, when the shell is fixed on the external storage battery, the binding post is connected with an output post of the storage battery, and the voltage detection circuit is electrically.
As a further improvement of the invention, the binding post comprises a cylinder and a wiring disc, one end of the cylinder is fixedly connected with the wiring board, the other end of the cylinder is fixedly connected with the wiring disc, the wiring disc passes through the cylinder through a lead and is electrically connected with a voltage detection circuit in the circuit board, the wiring disc comprises a conductive disc surface and a plurality of disc rods, the conductive disc surface is electrically connected with the voltage detection circuit in the circuit board through a lead, one ends of the disc rods are hinged with the side edge of the cylinder, which is opposite to one end of the wiring board, and are arranged in a circumferential manner, the conductive disc surface is made of a flexible material and is attached to the disc rods, one ends of the disc rods, which are opposite to the main body, are bent towards the center of the cylinder, so that the disc rods are integrally L-shaped rods, the inflection point is a hinge joint point with the side edge of the end part of the cylinder, the side wall of the cylinder is provided with a sliding hole, the side wall of the moving block is fixedly connected with a shifting rod, one end of the shifting rod is fixedly connected with the side face of the moving block, the other end of the shifting rod penetrates out of the sliding hole, one end of the moving block is hinged with one end, bent, of the disc rod, the other end of the moving block is elastically connected with the inner wall of the cylinder, when the wiring terminal is connected to an output column of the storage battery, the disc rod is abutted and folded by the output column and is sleeved on the output column, and the moving block is pulled to the other end.
The invention has the advantages that through the arrangement of the equipment body and the storage battery, the storage battery can effectively supply power to the equipment body, so that the effect of network communication is realized, through the arrangement of the band-pass filter, the wireless signal can be effectively filtered when the antenna body receives the wireless signal, so that the power consumption is increased due to the fact that the filtering is carried out in the equipment body and the cruising ability of the terminal equipment is reduced as in the prior art, and through the arrangement of the conversion circuit, the filtered signal energy can be effectively converted into electric energy to be input into the storage battery in the process that the band-pass filter filters the signal, so that the effect of charging the storage battery is achieved, and the cruising ability of the terminal equipment is further increased.
Drawings
FIG. 1 is a circuit diagram of a filtered antenna;
FIG. 2 is a block diagram of a health detection system;
FIG. 3 is a circuit diagram of a voltage judging circuit;
fig. 4 is an overall configuration diagram of the alarm circuit.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1 to 4, the NB-IOT network terminal device of this embodiment includes a device body and a storage battery disposed in the device body, the storage battery is electrically connected to the device body to supply power to the device body, the device body is provided with a filtering antenna a for filtering an interfering wireless signal, the filtering antenna a includes an antenna body a1, a band-pass filter a2 and a converting circuit a3, the band-pass filter a2 has an input end and an output end, the input end is coupled to the antenna body a1, the output end is coupled to the device body to filter a wireless signal received by the antenna body a1 and then input the wireless signal into the device body, the converting circuit a3 is coupled to the band-pass filter a2 and is also coupled to the storage battery to receive a wireless signal filtered by the band-pass filter a2 and convert the wireless signal into electrical energy and then input the electrical energy into the storage battery to charge the storage battery, in the process of using the terminal device in this embodiment, the filtering antenna a receives a wireless signal in real time, and the battery provides power to the device body, so that the device body operates to perform network communication, in the process of receiving a wireless signal by the filtering antenna a, the signal is first converted into an electrical signal through the antenna body a1 to be transmitted to the band-pass filter a2, the band-pass filter a2 performs a filtering function on the electrical signal to filter out an electrical signal converted from an interfering wireless signal, then the electrical signal converted from a correct network signal is input into the device body, so that the device body performs network communication, and meanwhile, the band-pass filter a2 transmits the energy of the interfering electrical signal to the converting circuit a3, and then the converting circuit a3 converts the energy into power again and then inputs the power into the battery, so that the power consumption in the battery can be greatly reduced, so on the one hand can avoid adopting the equipment body to carry out the problem that the power consumption that the filtering leads to increases, on the other hand can effectually slow down the power consumptive speed of battery, so great increase terminal equipment's duration.
As a specific embodiment of the improvement, the band-pass filter a2 includes:
the inductor L, this inductor L's one end is coupled in antenna body a1, and ground connection after coupling with resistance R behind the capacitor C is coupled to the other end, the one end of capacitor C is coupled with inductor L, and the other end is coupled in the equipment body, adopt inductor L and capacitor C's cooperation can make up into an LC resonant circuit and carry out effectual filtering, overall structure is simple, and compare in the mode that adopts current active filtering, can reduce the consumption of electric energy, simultaneously at the in-process of its filtering, the signal of telecommunication of filtering can temporarily store in inductor L to realize the saving to interfering with the signal of telecommunication energy.
As a specific embodiment of the improvement, the conversion circuit a3 includes:
induction coil XQ, this induction coil XQ is mutual inductance with inductance L, and its one end ground connection, coupling are coupled in the battery behind the diode D the other end, diode D's negative pole is coupled with the battery, and positive pole is coupled in induction coil XQ's one end, diode D's positive pole still coupling is grounded behind the electric capacity CX that steps up, because inductance L's the mode of stored energy is magnetic field, consequently adopt induction coil XQ's mode can effectually acquire the electric energy that inductance L stored, and through diode D's setting, alright realize one-way current's effect, avoid making the power consumptive problem of battery because the backward flow of battery current that the tip voltage of electric capacity CX that steps up leads to inadequately.
As an improved specific implementation manner, a health detection system is provided on the storage battery, and the health detection system includes:
the voltage detection circuit 1 is coupled to an output column of the storage battery and used for detecting the output voltage of the storage battery in real time and outputting a voltage value in real time;
a voltage judging circuit 2, the voltage judging circuit 2 is coupled to the voltage detecting circuit 1, and is used for receiving a voltage value, wherein the voltage value has a high voltage threshold and a low voltage threshold, comparing the voltage value with the high voltage threshold and the low voltage threshold, recording the times that the voltage value is greater than the high voltage threshold and the low voltage threshold, and outputting the times, and the voltage judging circuit 2 has a times threshold, and outputting a fault signal when the times is greater than the times threshold;
the alarm circuit 3, the coupling is connected to the voltage judging circuit 2, alarm after receiving the fault signal that the voltage judging circuit 2 outputs, in the course of using the system in this embodiment, only need to connect the voltage detecting circuit 1 with the output pole of the storage battery, then the output pole of the storage battery will output the electric energy to the voltage detecting circuit 1, the voltage detecting circuit 1 will input the voltage conversion of the output pole output electric energy to the voltage judging circuit 2, the voltage judging circuit 2 will judge the magnitude of this voltage value, judge whether exceed the high voltage threshold or lower than the low voltage threshold, and when the storage battery output voltage is higher than the high voltage threshold or lower than the low voltage threshold, it is in the abnormal state that the output of the output pole of the storage battery at this moment is represented, so through counting the number of times of the output abnormal state of the output pole of the storage battery, can effective to get rid of the output that appears in the charging and discharging process of the storage battery in the prior art The condition that the storage battery is unhealthy is stably judged, then when the abnormal times of the output voltage of the storage battery exceeds a threshold value, the storage battery at the moment is represented and the storage battery is in an unhealthy state, so that the unhealthy state of the storage battery can be effectively prompted through the alarm effect of the alarm circuit 3, people can well replace the storage battery, and the problem of network communication caused by the unhealthy storage battery is avoided.
As a specific embodiment of the improvement, the voltage determination circuit 2 includes:
the voltage judgment chip U1, the voltage judgment chip U1 has a high trigger terminal, a low trigger terminal and an output terminal, the high trigger terminal and the low trigger terminal are coupled to the output column of the storage battery after being short-circuited with each other to receive the electric energy voltage output by the output column of the storage battery, the high voltage threshold is the trigger voltage of the high trigger terminal, the low voltage threshold is the trigger voltage of the low trigger terminal, and when the high trigger terminal or the low trigger terminal is triggered, the output terminal outputs a high level;
the counting circuit 21 is coupled to the output end of the voltage judging chip U1 for receiving the high and low levels output by the output end, when the counting circuit 21 receives the high level, the counting circuit 21 counts inside the counting circuit 21, the counting circuit 21 is also coupled to the alarm circuit 3, and has a counting threshold therein, when the counting of the counting circuit 21 is equal to the counting threshold, the counting circuit 21 outputs a fault signal to the alarm circuit 3, through the setting of the voltage judging chip U1, the cooperation of the high trigger end, the low trigger end and the output end can be effectively utilized, when the output voltage of the output column of the storage battery exceeds the threshold, the effective detection can be realized, and the counting can be carried out through the counting circuit 21, so that the state condition of the output voltage of the storage battery can be well realized, and whether the storage battery is in a healthy state can be judged, and the whole structure is simple, only the voltage judging chip U1 and the counting circuit 21 are provided, so that the manufacturing cost of the system can be effectively reduced.
As a specific embodiment of the improvement, the counting circuit 21 includes:
the switch tube Q is provided with a first end, a second end and a control end, the first end is coupled to the power supply, the second end is coupled to the alarm circuit 3, the control end is coupled to the charge-discharge circuit 211 and then coupled to the output end of the voltage judging chip U1, the switch tube Q can be conducted in a mode of abnormal multiple charging in a short time through the arrangement of the charge-discharge circuit 211, the effect of counting and simultaneously judging the times of high level output by the voltage judging chip U1 is further realized, and the counting is carried out in a charging and discharging mode, so that the situations that the high voltage threshold value is exceeded and the low voltage threshold value is lower than the high voltage threshold value when the storage battery is charged or not charged can be effectively eliminated when the storage battery is in a healthy state, and compared with the mode that the counting chip is directly used for calculating pulse, the normal high voltage and low voltage cannot be recorded in counting data, therefore, the problem that the counting circuit 21 counts due to the normal voltage change so that the health state of the storage battery is judged wrongly finally can be effectively avoided.
As an improved specific embodiment, the voltage detection circuit 1, the voltage judgment circuit 2 and the alarm circuit 3 are integrated on a circuit board, the alarm circuit 3 includes a housing 31 and an audible and visual alarm 32, the housing 31 is detachably fixed on an external storage battery, the integrated circuit board is disposed in the housing 31, the audible and visual alarm 32 is disposed on the housing 31, the housing 31 is in a hollow cylindrical shape, one end of the housing 31 is fixedly connected with a wiring board 311, the circuit board is mounted on the wiring board 311, a side of the wiring board 311 facing away from the housing 31 is provided with a terminal 312, the voltage detection circuit 1 is electrically connected with the terminal 312, when the housing 31 is fixed on the external storage battery, the terminal 312 is connected with an output column of the storage battery, the voltage detection circuit 1 is electrically connected with the storage battery through the terminal 312, and the integration on a circuit board can effectively reduce the overall volume of the system, the convenience is to the use of system, and through audible-visual annunciator 32 and shell 31's setting, alright with on being connected to the output post of battery with the circuit board, reported to the police through the reputation simultaneously, and through wiring board 311 and terminal 311's setting, just can be better when shell 31 is connected with the output post of battery, be connected circuit board and output post.
As a modified specific embodiment, the binding post 312 includes a column 3121 and a wiring board 3122, one end of the column 3121 is fixedly connected to the wiring board 311, the other end of the column 3121 is fixedly connected to the wiring board 3122, the wiring board 3122 is electrically connected to the voltage detection circuit 1 in the circuit board after passing through the column 3121 through a conducting wire, the wiring board 3122 includes a conductive board surface 4 and a plurality of disc bars 5, the conductive board surface 4 is electrically connected to the voltage detection circuit 1 in the circuit board through a conducting wire, one end of the plurality of disc bars 5 is hinged to a side of the column 3121 opposite to one end of the wiring board 311 and is circumferentially arranged, the conductive board surface 4 is made of a flexible material and is attached to the disc bar 5, the disc bar 5 is bent toward the center of the column 3121 relative to one end of the main body 3121, so that the disc bar 5 is an L-shaped bar as a whole, and the bending point is a hinge point hinged to, the cylinder 3121 is hollow, a cylindrical moving block 6 is slidably arranged in the cylinder 3121, a sliding hole is formed in the side wall of the cylinder 3121, a shift lever 61 is fixedly connected to the side wall of the moving block 6, one end of the shift lever 61 is fixedly connected to the side surface of the moving block 6, the other end of the shift lever penetrates out of the sliding hole, one end of the moving block 6 is hinged to the bent end of the disc rod 5, and the other end of the moving block is elastically connected to the inner wall of the cylinder 3121, when the terminal 312 is connected to an output column of a storage battery, the disc rod 5 is abutted and folded by the output column and is sleeved on the output column, the elastic connection pulls the moving block 6 towards the other end of the cylinder 3121 relative to the wiring disc 3122, through the arrangement of the cylinder 3121 and the wiring disc 3122, when the housing 31 is connected, the cylinder 3121 and the wiring disc 3122 are matched and sleeved on the output, and setting through electrically conductive quotation 4 and dish pole 5, realized wiring dish 3122 the structure that can open and fold, made things convenient for being connected between wiring dish 3122 and the output post, adopt the setting of dish pole 5L type simultaneously, the setting of movable block 6 and driving lever 61 has been utilized simultaneously, alright effectual through stirring driving lever 61 with the hand, driving lever 61 takes movable block 6 to move towards wiring dish 3122, so dish pole 5 just can be promoted to open for the other end of movable block 6, so fine realization the effect that a driving dish pole 5 was opened, and overall structure is simple, and convenient for operation, wherein can also set the mode of the lantern ring at the gliding cover of outer wall of main part 3121 in this embodiment, when wiring dish 3122 cover is received on the output post, the lantern ring gliding cover is on wiring dish 3122, play further reinforced effect.
In summary, the terminal device in this embodiment can effectively implement direct filtering of the input wireless signal through the setting of the filtering antenna a, and compared with the mode of filtering by the device body in the prior art, the power consumption is less, and the cruising ability of the device body is further increased.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The utility model provides a network terminal equipment of NB-IOT, includes the equipment body and sets up the battery in the equipment body, the battery is connected with the equipment body electricity to supply power, its characterized in that for the equipment body: be equipped with on the equipment body and be used for carrying out filterable antenna (a) of filtering to the radio signal of interference, filtering antenna (a) includes antenna body (a1), band-pass filter (a2) and converting circuit (a3), band-pass filter (a2) has input and output, and the input is coupled with antenna body (a1), and the output is coupled in the equipment body to carry out the post-filter input to the equipment body with the radio signal that antenna body (a1) received, converting circuit (a3) is coupled in band-pass filter (a2), still couples with the battery, in order to receive the radio signal of band-pass filter (a2) filtering, and input to the battery after converting into the electric energy, in order to charge for the battery, band-pass filter (a2) includes:
an inductor L, one end of which is coupled to the antenna body (a1), the other end of which is coupled to a capacitor C, and then to a resistor R, and then to ground, one end of the capacitor C is coupled to the inductor L, and the other end of which is coupled to the device body; the conversion circuit (a3) comprises:
the induction coil XQ is mutually inducted with the inductor L, one end of the induction coil XQ is grounded, the other end of the induction coil XQ is coupled with the diode D and then coupled with the storage battery, the cathode of the diode D is coupled with the storage battery, the anode of the diode D is coupled with one end of the induction coil XQ, and the anode of the diode D is further coupled with the boosting capacitor CX and then grounded.
2. The NB-IOT network termination device of claim 1, wherein: be equipped with health detection system on the battery, health detection system includes:
the voltage detection circuit (1) is coupled to an output column of the storage battery and used for detecting the output voltage of the storage battery in real time and outputting a voltage value in real time;
the voltage judging circuit (2), the voltage judging circuit (2) is coupled to the voltage detecting circuit (1), is used for receiving the voltage value, have high voltage threshold and low voltage threshold in it, and compare the voltage value with high voltage threshold and low voltage threshold, record the number of times that the voltage value is greater than high voltage threshold and low voltage threshold and export, and the voltage judging circuit (2) has the number of times threshold, when the number of times is greater than the number of times threshold, output the fault signal;
and the alarm circuit (3) is coupled to the voltage judgment circuit (2) and alarms after receiving the fault signal output by the voltage judgment circuit (2).
3. The NB-IOT network termination device of claim 2, wherein: the voltage determination circuit (2) includes:
the voltage judgment chip U1, the voltage judgment chip U1 has a high trigger terminal, a low trigger terminal and an output terminal, the high trigger terminal and the low trigger terminal are coupled to the output column of the storage battery after being short-circuited with each other to receive the electric energy voltage output by the output column of the storage battery, the high voltage threshold is the trigger voltage of the high trigger terminal, the low voltage threshold is the trigger voltage of the low trigger terminal, and when the high trigger terminal or the low trigger terminal is triggered, the output terminal outputs a high level;
the counting circuit (21) is coupled to the output end of the voltage judging chip U1 and used for receiving the high and low levels output by the output end, when the counting circuit (21) receives the high level, the counting circuit (21) carries out counting inside, the counting circuit (21) is also coupled with the alarm circuit (3) and is provided with a counting threshold value, and when the counting of the counting circuit (21) is equal to the counting threshold value, the counting circuit (21) outputs a fault signal to the alarm circuit (3).
4. The NB-IOT network termination device of claim 3, wherein: the counting circuit (21) includes:
the switching tube Q is provided with a first end, a second end and a control end, wherein the first end is coupled to the power supply, the second end is coupled to the alarm circuit (3), and the control end is coupled to the output end of the voltage judgment chip U1 after being coupled with the charge-discharge circuit (211).
5. The NB-IOT network termination device of claim 2, wherein: the voltage detection circuit (1), the voltage judgment circuit (2) and the alarm circuit (3) are integrated on a circuit board, the alarm circuit (3) comprises a shell (31) and an acousto-optic alarm (32), the housing (31) is detachably fixed to an external battery, an integrated circuit board is arranged in the housing (31), the audible and visual alarm (32) is arranged on the shell (31), the shell (31) is in a hollow cylindrical shape, one end of the connecting plate is fixedly connected with a wiring board (311), the circuit board is arranged on the wiring board (311), a binding post (312) is arranged on one side surface of the wiring board (311) back to the shell (31), the voltage detection circuit (1) is electrically connected with the binding post (312), when the housing (31) is fixed to an external battery, the terminal (312) is connected to an output post of the battery, and the voltage detection circuit (1) is electrically connected to the battery through the terminal (312).
6. The NB-IOT network termination device of claim 5, wherein: the wiring terminal (312) comprises a column body (3121) and a wiring disc (3122), one end of the column body (3121) is fixedly connected with the wiring board (311), the other end of the column body is fixedly connected with the wiring disc (3122), the wiring disc (3122) is electrically connected with the voltage detection circuit (1) in the circuit board after penetrating through the column body (3121) through a lead, the wiring disc (3122) comprises a conductive disc surface (4) and a plurality of disc rods (5), the conductive disc surface (4) is electrically connected with the voltage detection circuit (1) in the circuit board through a lead, one end of each of the disc rods (5) is hinged with the side edge of one end, back to the wiring board (311), of the column body (3121) and is arranged in a circumference manner, the conductive disc surface (4) is made of a soft material and is attached to the disc rods (5), the disc rods (5) are bent towards the center of the column body (3121) relative to one end of the main body (312, so that the disk rod (5) is an L-shaped rod as a whole, the inflection point is a hinge point hinged with the side edge of the end part of the column body (3121), the column body (3121) is hollow, a cylindrical moving block (6) is arranged in the column body (3121) in a sliding manner, a slide hole is arranged on the side wall of the column body (3121), a deflector rod (61) is fixedly connected on the side wall of the moving block (6), one end of the deflector rod (61) is fixedly connected with the side surface of the moving block (6), the other end of the deflector rod penetrates out of the sliding hole, one end of the moving block (6) is hinged with one bent end of the disc rod (5), the other end is elastically connected with the inner wall of the column body (3121), when the wiring terminal (312) is connected to an output column of the storage battery, the disc rod (5) is abutted and folded by the output column and sleeved on the output column, and the elastic connection pulls the moving block (6) to the other end, opposite to the wiring disc (3122), of the column body (3121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189102.2A CN107846231B (en) | 2017-11-24 | 2017-11-24 | NB-IOT network terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106712810A (en) * | 2016-11-17 | 2017-05-24 | 国家电网公司 | Wireless power transceiver and portable terminal having same |
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