CN209593023U

CN209593023U - High integration PIR human inductor controls chip and its application circuit

Info

Publication number: CN209593023U
Application number: CN201920205121.8U
Authority: CN
Inventors: 周鹏; 黄朝刚; 毛晓峰; 李剑; 吴玉强
Original assignee: QUANXIN ELECTRONIC TECHNOLOGY (SHENZHEN) Co Ltd
Current assignee: QUANXIN ELECTRONIC TECHNOLOGY (SHENZHEN) Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2019-11-05
Anticipated expiration: 2029-02-13

Abstract

The utility model provides a kind of high integration PIR human inductor control chip and its application circuit, circuit includes that charging equipment charges by inductor control chip to rechargeable battery pack, rechargeable battery pack gives inductor control chip power supply, and inductor controls one foot position end voltage of chip through capacitor C_LDOIt powers after filtering to the end D of pir sensor, the end the S output signal of pir sensor is through capacitor C₁Through resistance R after filtering₁, again through level-one band-pass gain amplifier peripheral circuit amplification after be input to inductor control chip, to by inductor control chip drives switching power tube control rechargeable battery pack be load circuit power, adjusting delay adjustment capacitor C_TXThe delay timing working time of adjustable load circuit, simultaneously, inductor is disconnected when controlling the charging of chip controls rechargeable battery pack or not enough power supply and being powered when disconnecting to load circuit power supply, electricity abundance and charging for load circuit, this circuit, which can reduce component, reduces cost.

Description

High integration PIR human inductor controls chip and its application circuit

Technical field

The utility model relates to electronic circuit fields, and in particular to a kind of high integration PIR human inductor control chip And its application circuit.

Background technique

PIR human inductor typically refers to passive type IR people locator, and human body radiation is detected in the form of non-contact Infrared energy variation, and convert thereof into voltage signal output.And the signal converted generally can not be directly sharp With, after need to usually being detected, be filtered, amplifying relevant treatment, it can be utilized in the various control circuits of driving, it is as electric in being used as Source switch device, on the electronic equipments such as load switch controller, anti-theft fireproof alarm, routine, LED illumination lamp.Wherein In actual product application, more common using rechargeable battery pack as power input product, mobility is good and portable The characteristics of be widely used on the consumption electronic product of battery class, now product has in the market, rechargeable battery pack solar energy induction Wall lamp, wardrobe lamp, Inductive door/window, Induction flushing device, wild animal recorder etc. are removed when being applied to circuit and being designed It need to use other than necessary pir sensor, also need the additional corresponding peripheral circuit could to complete, including battery pack, corresponding electricity Pond group protects circuit, charging equipment, charging control circuit, LDO voltage regulator circuit, pir sensor and processing chip and part band Logical gain amplifier peripheral circuit, delay timing adjust multiple circuits such as circuit, light-operated circuit, switching power tube, load circuit Module composition.Fig. 1 is traditional integrated circuit structural block diagram.

Traditional integrated circuit structure technology is characterized in that: the multiple modular circuits in periphery are completed by independent circuit, first device Part and relevant control chip are all market universal electric element material, due to each model parameter specification, brand diversity feature, city Field can be easy to buy and convenient to use, device price and quality all can suitable control, and external operational amplifier periphery Circuit parameter is adjustable (to facilitate user to change specific band logical band characteristic, induction sensitivity and signal amplification factor to adapt to produce Demand of the product to specific frequency and distance) etc. these features so that certain customers indicate certain to traditional integrated circuit scheme Approve.

The shortcomings that traditional technology, is: although peripheral circuit module degree of recognition and general preferable, unavoidable whole electricity Peripheral component excessive bring material quantity in road such as type, produces and processes, manages and maintains at brings increased costs, the market Competitiveness decline.

In order to solve this disadvantage of traditional technology, there is another overall plan circuit structure block diagram in the market, As shown in Figure 2.

This scheme is that pir sensor handles built-in chip type and is only suitable for human motion with the difference of traditional scheme before The amplifying circuit device of band logical band characteristic, the external corresponding chip pin position of increase and bleeder circuit, client can be by adjusting this The voltage of foot position goes to meet client to the regulatory demand of different distance and sensitivity, two-stage before reducing relative to traditional circuit Peripheral operational amplifier circuit module and corresponding peripheral component, to reduce peripheral components bring fraction cost.

But this scheme still has insufficient place, the circuit modules such as peripheral management of charging and discharging, pressure stabilizing, delay, light-operated are still not It can be reduced, and such cake core is realized by the MCU of internal included high-precision A/D conversion circuit, chip cost ratio itself It is higher, furthermore, the fixed amplifier amplifier of this conceptual internal and its band logical frequency range accordingly fixed, when client's specific application environment is faced When actively when needing to adjust sensitivity and amplification factor characteristic, just can only go to adjust by modifying internal interlock circuit.It is to sum up several This system can still increased in overall plan cost for point, and there is the drawbacks of limitation product promotion application range, So that competitiveness is still not good enough in the market for product.

Utility model content

Utility model aims to solve the excessive bring productions of integrated circuit peripheral component in the prior art to add The problem of work, management service increased costs, provides a kind of high integration PIR human inductor control chip and its application circuit.

The high integration PIR human inductor control chip application circuit of the utility model includes: rechargeable battery pack, fills Electric equipment, pir sensor, capacitor C₁, resistance R₁, level-one band-pass gain amplifier peripheral circuit, inductor control chip, load Circuit, switching power tube, capacitor C_LDO, delay adjustment capacitor C_TX；

The charging equipment can be filled by the battery set charge/discharge management related functional circuits in inductor control chip After electric battery pack charging, rechargeable battery pack gives inductor control chip power supply, and inductor controls a foot position end voltage of chip Through capacitor C_LDOIt powers after filtering to the end D of the pir sensor, the end the S output signal of pir sensor is through capacitor C₁After filtering By resistance R₁, again through level-one band-pass gain amplifier peripheral circuit amplification after be input to inductor control chip, to successively The amplifying circuit in chip, comparison circuit, State logic control circuit, output timing control circuit are controlled by inductor to drive Dynamic switching power tube and then control rechargeable battery pack are load circuit power supply, realize the delay timing work of load circuit, adjust Section is connected to the delay adjustment capacitor C at another foot position end of inductor control chip_TXThe delay timing work of adjustable load circuit Make the time, meanwhile, the battery set charge/discharge management related functional circuits in inductor control chip enable load circuit Control.

Preferably, the foot position end of inductor control chip include: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC, wherein foot position end VSS ground connection, foot position end BAT- are grounded；

The battery set charge/discharge management related functional circuits are grounded by the power supply of VDD foot position end, by BAT- foot position end, It include: built-in switch power tube MO, light-operated circuit, logical operation circuit, charging circuit, overcharge protection circuit, Cross prevention electricity Road；The amplifying circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: operational amplifier OPA, fixed increasing Beneficial amplifier AMP；The comparison circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: first comparator COMP1, the second comparator COMP2 and door VT or door VS；The State logic control circuit is powered by VDD foot position end, is passed through VSS foot position end ground connection；The output timing control circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: prolong Slow time timer, blocking time timer；The inductor control chip further includes by the power supply of VDD foot position end, by VSS foot The inside pressure stabilizing LDO unit of position end ground connection；

The built-in switch power tube MO is NMOS tube；

The electrode input end of the charging equipment connects the VCHA foot position end of chip, cathode output end connects the BAT- foot position of chip The cathode at end and rechargeable battery pack, the anode of rechargeable battery pack connect the input terminal of load circuit and the VDD foot position end of chip, The first input end of the output termination logical operation circuit of light-operated circuit, the second input terminal of logical operation circuit connect Cross prevention It is first defeated to connect charging circuit for the output end of circuit, the first output termination grid of built-in switch power tube MO, second output terminal Enter end, the source electrode of built-in switch power tube MO connects BAT- foot position end, drain electrode connects VSS foot position end, the second input terminal of charging circuit Connect output end, the third input termination VCHA foot position end, output termination VDD foot position end of overcharge protection circuit, overcharge protection circuit It is grounded with over-discharge protection circuit by the power supply of VDD foot position end, by BAT- foot position end, the internal output of pressure stabilizing LDO unit first termination VPIR foot position end, second, third, the 4th output end distinguish output voltage V_H、V_M、V_L, capacitor C_LDOOne termination VPIR foot position end, Another termination VSS foot position end, the D termination VPIR foot position end of pir sensor, G termination VSS foot position end, S terminate level-one band-pass gain The input terminal of amplifier peripheral circuit, capacitor C₁With resistance R₁In parallel, one end and the connection of the end S, another termination VSS foot position end, level-one First output end of band-pass gain amplifier peripheral circuit is connect with INN foot position end, second output terminal and OPO foot position end connect, The normal phase input end of operational amplifier OPA meets voltage V_M, anti-phase input termination INN foot position end, output termination OPO foot position end, Gu Determine the input termination OPO foot position end of gain amplifier AMP, the normal phase input end and second of output termination first comparator COMP1 The anti-phase input of the inverting input terminal of comparator COMP2, first comparator COMP1 terminates voltage V_H, output termination or door VS The normal phase input end of first input end, the second comparator COMP2 meets voltage V_L, output termination or door VS the second input terminal, or The first input end of the output termination and door VT of door VS, it is defeated with the first of the second input termination State logic control circuit of door VT The first input end of outlet, output termination State logic control circuit, the second input termination delay of State logic control circuit First output end of time timer, third input terminate the output end of blocking time timer, State logic control circuit Second output terminal connects OUT foot position end, the input terminal of third output termination delay time timer, the 4th output termination blocking time The input terminal of timer, the second output terminal of delay time timer meet TXC foot position end, delay adjustment capacitor C_TXA termination TXC foot position end, another termination VSS foot position end, switching power tube first end and load circuit output end connection, second end with The connection of OUT foot position end, third terminate VSS foot position end；

The good fixed value voltage V of VPIR foot position end pio chip inner setting_LDOThe end pir sensor D stable power-supplying is given,

Battery set charge/discharge management related functional circuits in the inductor control chip enable load circuit Control include: battery set charge/discharge management related functional circuits control rechargeable battery pack charging when or when not enough power supply disconnect pair It is load circuit power supply when load circuit power supply, electricity abundance and charging disconnect or charging voltage is 0V.

Preferably, the charging equipment is 5.0V USB or solar panels, load circuit is LED light emitting diode, Switching power tube is triode, and the input terminal of load circuit is the anode of LED light emitting diode, output end is LED light-emitting diodes The cathode of pipe, the first end of switching power tube is the collector of triode, second end is the base stage of triode, third end is three poles The emitter of pipe, level-one band-pass gain amplifier peripheral circuit include: resistance Ri, Rf, capacitor Ci, Cf；The pir sensor The end S is connect after passing sequentially through concatenated capacitor Ci, resistance Ri with INN foot position end, and capacitor Cf is in parallel with resistance Rf, and the one of capacitor Cf End is connect with INN foot position end, the other end and OPO foot position end connect.

Preferably, the charging equipment is 5.0V USB or solar panels, load circuit is LED light emitting diode, Switching power tube is triode, and the input terminal of load circuit is the anode of LED light emitting diode, output end is LED light-emitting diodes The cathode of pipe, the first end of switching power tube is the collector of triode, second end is the base stage of triode, third end is three poles The emitter of pipe, level-one band-pass gain amplifier peripheral circuit include: resistance Ri, Rf, capacitor Ci, Cf；The pir sensor The end S is connect after passing sequentially through resistance Ri, capacitor Ci with INN foot position end, and one end of capacitor Cf is public with resistance Ri's and capacitor Ci Node connection, the other end and OPO foot position end connect, and the both ends of resistance Rf are connect with OPO foot position end and INN foot position end respectively.

The utility model also provides a kind of high integration PIR human inductor control chip, the internal circuit of the chip It include: the foot position end of chip: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC；

Built-in switch power tube MO, it is transported by the power supply of VDD foot position end, the light-operated circuit being grounded by BAT- foot position end, logic Circuit, charging circuit, overcharge protection circuit, over-discharge protection circuit are calculated, is grounded by the power supply of VDD foot position end, by VSS foot position end Operational amplifier OPA, fixed gain amplifier AMP, first comparator COMP1, the second comparator COMP2 and door VT or door VS, State logic control circuit, delay time timer, blocking time timer, internal pressure stabilizing LDO unit, it is described built-in to open Pass power tube MO is NMOS tube；

The first input end of the output termination logical operation circuit of light-operated circuit, the second input termination of logical operation circuit The output end of over-discharge protection circuit, the grid of the first output termination built-in switch power tube MO, second output terminal connect charging circuit First input end, the source electrode of built-in switch power tube MO connects BAT- foot position end, drain electrode connects VSS foot position end, the of charging circuit Two input terminals connect the output end of overcharge protection circuit, third input termination VCHA foot position end, output termination VDD foot position end, overcharge It protects circuit and over-discharge protection circuit to be powered by VDD foot position end, be grounded by BAT- foot position end, internal pressure stabilizing LDO unit first Output termination VPIR foot position end, second, third, the 4th output end distinguish output voltage VH, VM, VL, capacitor C_LDOA termination VPIR foot position end, another termination VSS foot position end, D termination VPIR foot position end, the G termination VSS foot position end, S termination of pir sensor The input terminal of level-one band-pass gain amplifier peripheral circuit, capacitor C1 and resistance R1 be in parallel, one end and the end S are connect, another termination VSS foot position end, the first output end of level-one band-pass gain amplifier peripheral circuit connect with INN foot position end, second output terminal with The connection of OPO foot position end, the normal phase input end of operational amplifier OPA meet voltage VM, anti-phase input termination INN foot position end, output end OPO foot position end is connect, the input termination OPO foot position end of fixed gain amplifier AMP, output are terminating first comparator COMP1 just The inverting input terminal of phase input terminal and the second comparator COMP2, the anti-phase input termination voltage VH, defeated of first comparator COMP1 The first input end of termination or door VS out, the normal phase input end of the second comparator COMP2 meet voltage VL, output termination or door VS The first input end of the output termination and door VT of second input terminal or door VS, the second input termination state logic control with door VT The first input end of first output end of circuit processed, output termination State logic control circuit, the of State logic control circuit First output end of two input termination delay time timers, third input terminate the output end of blocking time timer, state The second output terminal of logic control circuit connects the input terminal, the 4th defeated at OUT foot position end, third output termination delay time timer The input terminal of blocking time timer is terminated out, and the second output terminal of delay time timer connects TXC foot position end.

Preferably, the load circuit is for power switching device or load switch controller or fire-theft alarm system or certainly Any one of dynamic monitor or LED illumination lamp.

Preferably, the inductor control chip uses unique ESOP8 outline packages form.

Compared with prior art, the utility model has the beneficial effects that

1. inductor control chip height it is integrated, built-in LDO, overcharge, over-discharge, charging, it is light-operated, induction, delay etc. electricity Road, circuit peripheral only need a small amount of component to can be achieved with the control of PIR human inductor, reduce two-stage periphery operational amplifier circuit module With integrated circuit peripheral component, production and processing and maintenance management are simplified, reduces cost, increases the market competitiveness.

2. peripheral circuit increases delay adjustment capacitor, a capacitor is only needed, client can be by adjusting this capacitor Size fast sets and modifies the delay timing working time of load circuit, realizes that load circuit prolongs timing drive control, greatly Facilitate application.

3. external adjustable level-one band-pass gain amplifier peripheral circuit uses as needed for client, the ginseng in this circuit is adjusted Number can properly increase the sensitivity of inductor and increase or reduce corresponding distance of reaction.

4. chip interior carries battery set charge/discharge and manages related functional circuits, charging equipment is controlled to rechargeable battery pack The on and off at realization BAT- foot position end and VSS foot position end is gone to control electricity using internal switch power tube MO while charging The mode of pond feeder ear, and then load circuit can be closed when charging using charging equipment, it avoids battery pack and is being electrically charged, The case where VSS foot position end such as PIR, load connection circuit will discharge simultaneously again.

5. after the voltage of rechargeable battery pack reaches chip VDD under-voltage point, chip interior over-discharge protection circuit output letter The logical operation circuit output low level number being given in chip closes MO transistor, at this point, chip low-power consumption keeps standby operation, Battery can be effectively protected down within 10uA in quiescent dissipation, prevent battery over-discharge from damaging；If battery places one section Between chip VDD telegram in reply when being depressed into cut-in voltage or more, exported at this time because the control of logical operation circuit will not still open, need to charge After equipment charges to chip VCHA or packed battery powers on again, disconnects charging equipment or charging voltage is that 0V Shi Caineng is reopened Load, in this way can be to avoid because loading the phenomenon that restarting repeatedly caused by battery repeatedly back pressure and electric discharge.

6. this PIR human inductor controls chip and uses unique ESOP8 outline packages form, facilitate chip cooling and outer Cloth figure.

7. the light-operated circuit difference formed with traditional light-sensitive device is, VCHA foot position in solar product application End can both complete charge function relevant control or may be implemented instantaneously to close load when using solar panel charging and control The functional characteristics of circuit (the light-operated mode of traditional photosensitive device: is waited without after human body triggering after needing light shutter device to check daytime, is just closed Close load), while reducing peripheral light-sensitive device, the more closing to reality application of light-operated mode.

Detailed description of the invention

Fig. 1 is prior art traditional PI R human inductor control circuit；

Fig. 2 is another prior art traditional PI R human inductor control circuit；

Fig. 3 is that the utility model high integration PIR human inductor controls chip and its application circuit；

Fig. 4 is the practical application circuit block diagram that first high integration PIR human inductor of the utility model controls chip；

Fig. 5 is the practical application circuit block diagram that second high integration PIR human inductor of the utility model controls chip.

Specific embodiment

The utility model will be described in further detail in conjunction with attached drawing:

Referring to FIG. 3, the utility model provides a kind of high integration PIR human inductor control chip and its application electricity Road, circuit include: that charging equipment charges by inductor control chip to rechargeable battery pack, and rechargeable battery pack is to inductor Chip power supply is controlled, inductor controls one foot position end voltage of chip through capacitor C_LDOIt powers after filtering to the end D of pir sensor, The end the S output signal of pir sensor is through capacitor C₁Through resistance R after filtering₁, again put through level-one band-pass gain amplifier peripheral circuit It is input to inductor control chip after big, controls chargeable electricity to control chip drives switching power tube by inductor The power supply of Chi Zuwei load circuit, adjusts delay adjustment capacitor C_TXThe delay timing working time of adjustable load circuit, meanwhile, sense It is disconnected when answering device control chip controls rechargeable battery pack charging or not enough power supply to load circuit power supply, electricity is sufficient and charges Disconnection or charging voltage are load circuit power supply when being OV, this circuit, which can reduce component, reduces cost.

Specifically, inductor control chip internal circuits include: battery set charge/discharge management related functional circuits, amplification electricity Road, comparison circuit, State logic control circuit, output timing control circuit, internal pressure stabilizing LDO unit；

The charging equipment is specifically included by inductor control chip to rechargeable battery pack charging: the charging equipment It charges by the battery set charge/discharge management related functional circuits in inductor control chip to rechargeable battery pack；

It is described that chip drives switching power tube control rechargeable battery pack is controlled as load circuit confession by inductor Electricity specifically includes: passing sequentially through amplifying circuit, comparison circuit, the State logic control circuit, output in inductor control chip Timing control circuit carrys out driving switch power tube and then controls rechargeable battery pack as load circuit power supply, realizes load circuit Delay timing work.

Specifically, the foot position end of inductor control chip include: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC, wherein VSS foot position end ground connection, BAT- foot position end are grounded；

The built-in switch power tube MO is NMOS tube；

The concrete operating principle of the utility model are as follows: rechargeable battery pack controls chip normal working voltage model in inductor Interior power supply is enclosed, battery anode is connected to inductor control chip VDD foot position and load circuit input terminal, battery cathode connect inductor Control the BAT- foot position end of chip.VDD foot position end voltage includes LDO and internal related amplifier, control to chip internal circuits power supply The units such as system, LDO output terminate on the end of VPIR foot position, the good fixed value voltage V of VPIR foot position end pio chip inner setting_LDO It is given to the end external pir sensor D and stable power-supplying is provided.When pir sensor detects human normal movable signal, PIR sensing The end device S exports faint ac current signal, passes through C₁Pass through R after filtering again₁It is converted into same faint ac voltage signal Afterwards, it is input in level-one band-pass gain amplifier peripheral circuit, signal amplifies through this amplifier, then is transferred to successively by chip In the amplifying circuit of portion operational amplifier OPA and fixed gain amplifier AMP composition, signal is amplified to through operational amplifier OPA After certain voltage value, then it is transmitted to the input terminal of fixed gain amplifier AMP, signal is amplified again at this time, and reaching close can touch When sending out the amplitude of internal reference voltage, is compared by the comparator of internal comparison circuit and be transmitted to State logic control after operation In circuit, State logic control circuit combination external capacitive C_TX, combined by internal delay time time timer, blocking time timer Made of output timing control circuit go control induction chip OUT foot position end high level (being equal to VDD foot position end voltage) it is defeated Out and delay, OUT foot position end output voltage signal remove driving external switch power tube again, control prolonging for load circuit to realize When timing working；Wherein when being charged using charging equipment (USB, adapter, solar panels etc.) to battery pack, charging equipment Electrode input end connects control chip VCHA foot position end, and the BAT- that cathode output end connects chip is extreme；Chip interior is controlled from electrification Pond group management of charging and discharging related functional circuits, while output loading circuit can also be carried out to make can control (can to fill in use Electric equipment closes load circuit when charging, and avoids battery pack when being electrically charged again while the case where to discharge).Chip interior is certainly Overcharging with different battery packs, over-discharge protection circuit may be selected in corresponding according to the difference of the battery pack type of actual use The induction of portion's battery protection type controls chip.After battery reaches chip VDD under-voltage point, it is defeated that load is automatically closed in chip interior Out, chip low-power consumption keeps standby operation, if battery placement a period of time chip VDD telegram in reply is depressed into cut-in voltage or more, Exporting at this time will not still open, and after needing charging equipment to charge to chip VCHA, disconnect when charging equipment or charging voltage are 0V Load can be reopened, it thus can be to avoid because loading the phenomenon that restarting repeatedly caused by battery repeatedly back pressure and electric discharge；In addition Adjust load circuit prolongs timing working time, need to only adjust external capacitor C between the two foot positions end TXC and VSS_TXSize be Fast it can set and modify.

The utility model efficiently solves a large amount of periphery needed for PIR human inductor control circuit with the same function The problem of circuit could be completed, realize PIR human inductor control chip high integration and few peripheral applications circuit Novel control scheme, please refer to Fig. 4, Fig. 5, most simple peripheral applications circuit at least can be by 1 pir sensor, 5 chip capacitor devices, 3 Sheet resistance device and 1 induction control chip are completed, and greatly reduce application system scheme cost, the flexible usability of integrated circuit also increases By force, the shortcomings that overcoming traditional technology improves this type product competitiveness in the market.Fig. 4 show a kind of preferable reality Example is applied, Fig. 5 show another preferred embodiment.

Referring to FIG. 4, the practical application circuit of first high integration PIR human inductor control chip of the utility model Technical solution is: the charging equipment is 5.0V USB or solar panels, and load circuit is LED light emitting diode, is opened Pass power tube is triode, and the input terminal of load circuit is the anode of LED light emitting diode, output end is LED light emitting diode Cathode, the first end of switching power tube is the collector of triode, second end is the base stage of triode, third end is triode Emitter, level-one band-pass gain amplifier peripheral circuit includes: resistance R_i、R_f, capacitor C_i、C_f；The end S of the pir sensor Pass sequentially through concatenated capacitor C_i, resistance R_iIt is connect afterwards with INN foot position end, capacitor C_fWith resistance R_fParallel connection, capacitor C_fOne end with The connection of INN foot position end, the other end and OPO foot position end connect.

Referring to FIG. 5, the practical application circuit of second high integration PIR human inductor control chip of the utility model Technical solution is: the charging equipment is 5.0V USB or solar panels, and load circuit is LED light emitting diode, is opened Pass power tube is triode, and the input terminal of load circuit is the anode of LED light emitting diode, output end is LED light emitting diode Cathode, the first end of switching power tube is the collector of triode, second end is the base stage of triode, third end is triode Emitter, level-one band-pass gain amplifier peripheral circuit includes: resistance R_i、R_f, capacitor C_i、C_f；The end S of the pir sensor Pass sequentially through resistance R_i, capacitor C_iIt is connect afterwards with INN foot position end, capacitor C_fOne end and resistance R_iWith the common node of capacitor Ci Connection, the other end and OPO foot position end connect, resistance R_fBoth ends connect respectively with OPO foot position end and INN foot position end.

Referring to FIG. 3, the utility model also provides a kind of high integration PIR human inductor control chip, the chip Internal circuit include: chip foot position end: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC；

Preferably, the chip uses unique ESOP8 outline packages form.

Preferably, the load circuit be power switching device, load switch controller, fire-theft alarm system, from Dynamic monitor, LED illumination lamp any one.

Utility model has the advantages that being directed to PIR human body inductive lamp product, LDO, mistake built in high integration are used Fill, over-discharge, charging, light-operated, induction, the functions such as delay PIR human body induction control device chip, circuit peripheral only needs a small amount of first device Part can be achieved with the control of PIR human inductor；External level-one tunable band-pass gain amplifying circuit uses as needed for client, adjusts Parameter in whole external band-pass gain amplification peripheral circuit can properly increase the sensitivity of inductor and increase or reduce corresponding Distance of reaction；It only needs a capacitor that can realize that load circuit prolongs timing drive control, greatly facilitates application；This PIR people Body inductor controls chip and uses unique ESOP8 outline packages form, facilitates chip cooling and peripheral Butut；It is produced in solar energy In product application, the light-operated circuit difference formed with traditional light-sensitive device is, VCHA foot position end is using solar panel charging When control, it can both complete charge function relevant control or functional characteristics (the traditional light for instantaneously closing load circuit may be implemented The light-operated mode of sensing device: waited after needing light shutter device to check daytime without after human body triggering, just close load), it is photosensitive to reduce periphery While device, the more closing to reality application of light-operated mode；This chip after battery under-voltage protection, quiescent dissipation down to 10uA with It is interior, battery can be effectively protected, prevented battery over-discharge from damaging.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modification, equivalent replacement or improvement etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. a kind of high integration PIR human inductor controls chip application circuit, which is characterized in that the circuit includes: that can fill Electric battery pack, charging equipment, pir sensor, capacitor C₁, resistance R₁, level-one band-pass gain amplifier peripheral circuit, inductor control Coremaking piece, load circuit, switching power tube, capacitor CLDO, delay adjustment capacitor CTX；

The charging equipment gives chargeable electricity by the battery set charge/discharge management related functional circuits in inductor control chip After the charging of pond group, rechargeable battery pack gives inductor control chip power supply, and inductor controls a foot position end voltage of chip through electricity Hold the end D after CLDO is filtered to the pir sensor to power, the end the S output signal of pir sensor is through capacitor C₁After filtering by Resistance R1, inductor control chip is input to after the amplification of level-one band-pass gain amplifier peripheral circuit again, to pass sequentially through Amplifying circuit, comparison circuit, State logic control circuit, output timing control circuit in inductor control chip drive out It closes power tube and then controls rechargeable battery pack as load circuit power supply, realize the delay timing work of load circuit, the company of adjusting When being connected to the delay timing work of the adjustable load circuit of delay adjustment capacitor CTX at another foot position end of inductor control chip Between, meanwhile, the battery set charge/discharge management related functional circuits in inductor control chip carry out making can control to load circuit.

2. high integration PIR human inductor according to claim 1 controls chip application circuit, which is characterized in that institute The foot position end for stating inductor control chip includes: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC, wherein VSS foot Position end ground connection, BAT- foot position end ground connection；

The battery set charge/discharge management related functional circuits are grounded by the power supply of VDD foot position end, by BAT- foot position end, packet It includes: built-in switch power tube MO, light-operated circuit, logical operation circuit, charging circuit, overcharge protection circuit, over-discharge protection circuit； The amplifying circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: operational amplifier OPA, fixed gain are put Big device AMP；The comparison circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: first comparator COMP₁、 Second comparator COMP₂And door VT or door VS；The State logic control circuit is powered by VDD foot position end, passes through VSS foot position End ground connection；The output timing control circuit is powered by VDD foot position end, is grounded by VSS foot position end comprising: delay time Timer, blocking time timer；The inductor control chip further includes terminating by the power supply of VDD foot position end, by VSS foot position The inside pressure stabilizing LDO unit on ground；

The built-in switch power tube MO is NMOS tube；

The electrode input end of the charging equipment connects the VCHA foot position end of chip, cathode output end connect chip BAT- foot position end and The cathode of rechargeable battery pack, the anode of rechargeable battery pack connects the input terminal of load circuit and the VDD foot position end of chip, light-operated The first input end of the output termination logical operation circuit of circuit, the second input terminal of logical operation circuit take over discharge protection circuit Output end, the first output termination grid of built-in switch power tube MO, second output terminal connect the first input end of charging circuit, The source electrode of built-in switch power tube MO connects BAT- foot position end, drain electrode connects VSS foot position end, and the second input terminal of charging circuit, which is taken over, to be filled Protect output end, the third input termination VCHA foot position end, output termination VDD foot position end, overcharge protection circuit and over-discharge of circuit Circuit is protected to be grounded by the power supply of VDD foot position end, by BAT- foot position end, the internal output of pressure stabilizing LDO unit first termination VPIR foot Position end, second, third, the 4th output end distinguish output voltage VH, VM, VL, a termination VPIR foot position end, another of capacitor CLDO Terminate VSS foot position end, the D termination VPIR foot position end of pir sensor, G termination VSS foot position end, S termination level-one band-pass gain amplification The input terminal of device peripheral circuit, capacitor C₁With resistance R₁In parallel, one end and the connection of the end S, another termination VSS foot position end, level-one band logical First output end of gain amplifier peripheral circuit is connect with INN foot position end, second output terminal and OPO foot position end connect, operation The normal phase input end of amplifier OPA connects voltage VM, anti-phase input termination INN foot position end, output termination OPO foot position end, fixed to increase The input termination OPO foot position end of beneficial amplifier AMP, output termination first comparator COMP₁Normal phase input end and second compare Device COMP₂Inverting input terminal, first comparator COMP₁Anti-phase input termination voltage VH, output termination or door VS it is first defeated Enter end, the second comparator COMP₂Normal phase input end connect the second input terminal or door VS of voltage VL, output termination or door VS Output termination and the first input end of door VT, with the first output end of the second input termination State logic control circuit of door VT, Second input termination delay time of the first input end of output termination State logic control circuit, State logic control circuit is fixed When the first output end of device, third input termination blocking time timer output end, the second of State logic control circuit be defeated OUT foot position end, the input terminal of third output termination delay time timer, the 4th output termination blocking time timer are terminated out Input terminal, the second output terminal of delay time timer connects TXC foot position end, a termination TXC foot position of delay adjustment capacitor CTX Output end connection, second end and the OUT foot position end of end, another termination VSS foot position end, switching power tube first end and load circuit Connection, third terminate VSS foot position end；

Pio chip inner setting good fixed value voltage VLDO in VPIR foot position end gives the end pir sensor D stable power-supplying, described It includes: battery that battery set charge/discharge management related functional circuits in inductor control chip carry out making can control to load circuit Group management of charging and discharging related functional circuits control rechargeable battery pack charging when or when not enough power supply disconnect to load circuit power supply, It is load circuit power supply when electricity is sufficient and charging disconnection or charging voltage are 0V.

3. high integration PIR human inductor according to claim 2 controls chip application circuit, which is characterized in that institute Stating charging equipment is 5.0VUSB or solar panels, and load circuit is LED light emitting diode, and switching power tube is triode, is born The input terminal for carrying circuit is the anode of LED light emitting diode, the cathode that output end is LED light emitting diode, switching power tube First end is the collector of triode, second end is the base stage of triode, the emitter that third end is triode, and level-one band logical increases Beneficial amplifier peripheral circuit includes: resistance R_i、R_f, capacitor C_i、C_f；The end S of the pir sensor passes sequentially through concatenated capacitor C_i, resistance R_iIt is connect afterwards with INN foot position end, capacitor C_fWith resistance R_fParallel connection, capacitor C_fOne end connect with INN foot position end, be another End is connect with OPO foot position end.

4. high integration PIR human inductor according to claim 2 controls chip application circuit, which is characterized in that institute Stating charging equipment is 5.0VUSB or solar panels, and load circuit is LED light emitting diode, and switching power tube is triode, is born The input terminal for carrying circuit is the anode of LED light emitting diode, the cathode that output end is LED light emitting diode, switching power tube First end is the collector of triode, second end is the base stage of triode, the emitter that third end is triode, and level-one band logical increases Beneficial amplifier peripheral circuit includes: resistance R_i、R_f, capacitor C_i、C_f；The end S of the pir sensor passes sequentially through resistance R_i, capacitor C_iIt is connect afterwards with INN foot position end, capacitor C_fOne end and resistance R_iWith capacitor C_iCommon node connection, the other end and OPO foot position End connection, resistance R_fBoth ends connect respectively with OPO foot position end and INN foot position end.

5. high integration PIR human inductor according to claim 1 or 2 controls chip application circuit, which is characterized in that The load circuit is power switching device or load switch controller or fire-theft alarm system or routine or LED illumination Any one of lamps and lanterns.

6. a kind of high integration PIR human inductor controls chip, which is characterized in that the internal circuit of the chip includes: core The foot position end of piece: VCHA, INN, OPO, VPIR, VSS, VDD, BAT-, OUT, TXC；

Built-in switch power tube MO, light-operated circuit, the logical operation electricity powered by VDD foot position end, be grounded by BAT- foot position end Road, charging circuit, overcharge protection circuit, over-discharge protection circuit by the power supply of VDD foot position end, pass through the operation of VSS foot position end ground connection Amplifier OPA, fixed gain amplifier AMP, first comparator COMP₁, the second comparator COMP₂And door VT or door VS, state Logic control circuit, delay time timer, blocking time timer, internal pressure stabilizing LDO unit, the built-in switch power tube MO is NMOS tube；

The first input end of the output termination logical operation circuit of light-operated circuit, the second input terminal of logical operation circuit, which is taken over, to be put The output end, the first output termination grid of built-in switch power tube MO, second output terminal of circuit is protected to connect the of charging circuit One input terminal, the source electrode of built-in switch power tube MO connects BAT- foot position end, drain electrode connects VSS foot position end, and the second of charging circuit is defeated Output end, the third input termination VCHA foot position end, output termination VDD foot position end for entering to terminate overcharge protection circuit, overcharge protection Circuit and over-discharge protection circuit are powered by VDD foot position end, are grounded by BAT- foot position end, and internal pressure stabilizing LDO unit first exports Terminate VPIR foot position end, second, third, the 4th output end distinguish output voltage VH, VM, VL, capacitor CLDO one termination VPIR Foot position end, another termination VSS foot position end, the D termination VPIR foot position end of pir sensor, G termination VSS foot position end, S terminate level-one The input terminal of band-pass gain amplifier peripheral circuit, capacitor C₁With resistance R₁In parallel, one end and the connection of the end S, another termination VSS foot Position end, the first output end of level-one band-pass gain amplifier peripheral circuit connect with INN foot position end, second output terminal and OPO foot The connection of position end, the normal phase input end of operational amplifier OPA meet voltage VM, anti-phase input termination INN foot position end, output termination OPO Foot position end, the input termination OPO foot position end of fixed gain amplifier AMP, output termination first comparator COMP₁Positive input End and the second comparator COMP₂Inverting input terminal, first comparator COMP₁Anti-phase input termination voltage VH, output termination or The first input end of door VS, the second comparator COMP₂Normal phase input end connect voltage VL, output termination or door VS second input The first input end of the output termination and door VT of end or door VS, with the second input termination State logic control circuit of door VT The first input end of first output end, output termination State logic control circuit, the second input terminal of State logic control circuit Connect the first output end of delay time timer, the output end of third input termination blocking time timer, State logic control The second output terminal of circuit connects OUT foot position end, the input terminal of third output termination delay time timer, the 4th output termination envelope The input terminal of time timer is locked, the second output terminal of delay time timer connects TXC foot position end.

7. high integration PIR human inductor according to claim 6 controls chip, which is characterized in that the chip is adopted With unique ESOP₈Outline packages form.