JP2013206022A - Setting/testing system and setting/testing method for radio type sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the setting/testing system of a radio type sensor and the setting/testing method of the radio type sensor for surely and inexpensively performing the setting or testing of various information.SOLUTION: The setting/testing system of a radio type sensor includes: a radio type sensor (10) configured such that a circuit board (14) mounted with electronic components constituting a sensor main body circuit including a detection part (125) for detecting the occurrence of an abnormal phenomenon such as heat, smoke and harmful gas and a radio communication unit (40) having a radio communication function are housed in a casing constituted of an attachment base (11) and a main body case (12) covering the whole lower side of the attachment base, and that the circuit board and the radio communication unit are electrically connectable via respectively installed connectors (111, 121); and a setter or tester (140) configured so as to be connectable to the circuit board side connector or the radio communication unit side connector in a state that the connection between the circuit board and the radio communication unit by the connector is separated.

Description

  The present invention relates to a setting / testing system for a wireless sensor such as a fire sensor having a wireless communication function, and a setting / testing method for the wireless sensor.

Conventionally, a fire detector installed in a building or the like is generally a wired transmission of a signal to a receiver or a repeater. On the other hand, in recent years, an invention related to a wireless fire detector that transmits a signal wirelessly to a receiver or a repeater has been proposed (for example, see Patent Document 1).
In the case of wired fire detectors, it is necessary to lay wiring such as transmission lines and power lines inside the building, whereas in the case of wireless fire detectors, wiring laying work is not necessary or There is an advantage that it can be greatly reduced.

  By the way, as fire detectors become more sophisticated, various types of information such as detector type (type), sensitivity type, serial number, address, and sensitivity adjustment data may be set, registered, and tested. In the case of a wired fire detector, since the detector is connected to the transmission line or power line, setting by connecting the setting device or tester to the transmission line or power line, A test can be performed (for example, refer patent document 2).

JP-A-5-210790 JP 2000-33258 A

However, in the case of a wireless sensor, various information setting and testing methods differ depending on what kind of wireless function is incorporated, and thus various problems to be technically solved arise. For example, in the case of a wireless sensor, since it is difficult to supply power from the outside, it is common to incorporate a battery. In that case, in order to reduce battery consumption as much as possible, the sensor only has a transmission function. It is conceivable that various information settings and operation tests are performed at the factory.
However, when various information settings and operation tests are performed on the sensor in the factory, setting and testing terminals and input / output interfaces are provided on the sensor to facilitate setting and testing. However, if a dedicated terminal or interface is provided, the sensor becomes complicated and the cost may increase.

If the sensor is configured to have only a transmission function, various information settings and operation tests cannot be performed using the wireless communication function. Furthermore, if the sensor (alarm device) is configured to have a transmission function and a reception function, it is easy to set information and perform operational tests using the wireless function. There is a risk of hindrance. Specifically, when the work is a factory, settings and tests are usually performed in a situation where there are many detectors in the vicinity of the setter and tester. Communication with the sensor becomes possible, and there arises a problem that smooth setting and testing become difficult.
The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is to set and test a wireless sensor that can perform various information settings and operation tests reliably and inexpensively, and a wireless sensor. It is to provide a setting / testing method for the vessel.

In order to solve the above problems, the wireless sensor setting / testing system according to claim 1 comprises:
An electronic device constituting a sensor main body circuit having a detection unit for detecting the occurrence of an abnormal phenomenon such as heat, smoke, harmful gas, etc. inside a housing composed of a base member and a main body case engaged with the base member A circuit board on which components are mounted and a wireless communication unit having a wireless communication function are housed,
A wireless sensor configured such that the circuit board and the wireless communication unit can be electrically connected to each other via a connector;
A setting device or a tester that can be connected to the connector on the circuit board side or the connector on the wireless communication unit side in a state where the connection between the circuit board and the wireless communication unit by the connector is disconnected. And
Here, the unit means that a plurality of semiconductor chips or discrete electronic components are mounted on an insulating substrate having printed wiring on the surface or inside, and each component is coupled so as to play a predetermined role by printed wiring. That is, it is configured to be handled as one part.

According to the first aspect of the present invention, the connector on the wireless communication unit side is disconnected from the connector on the circuit board side, and instead the connector provided on the setting device (tester) side is used as the connector on the circuit board side. By connecting, signals can be sent and received between the setting device (tester) and the circuit board of the sensor body, so data can be sent and received without wireless communication. Interference can be avoided between them and various data can be set and the circuit of the sensor body can be reliably tested.
In addition, since it is possible to send and receive data to and from the circuit board of the sensor body using a connector that connects the circuit board of the sensor body and the wireless communication unit, the circuit board of the sensor body and the setting device (tester) And a dedicated terminal or interface for connecting to each other is not required, thereby making it possible to construct the sensor at a low cost.

A second aspect of the present invention is the wireless sensor setting / testing system according to the first aspect,
The wireless communication unit includes a transmission circuit that transmits signal radio waves to the outside, and does not include a reception circuit that receives signal radio waves from the outside.
According to the second aspect of the present invention, since the wireless communication unit does not require a signal receiving circuit for wireless communication, the number of components constituting the wireless communication unit can be reduced and the size of the sensor can be reduced. It can be configured at low cost.

A third aspect of the present invention is the wireless sensor setting / testing system according to the first or second aspect,
The circuit board and the wireless communication unit include an interface for transmitting and receiving signals to and from each other via the connector.
According to the invention described in claim 3, since it is only necessary to provide one to four signal lines between the circuit board of the sensor body and the wireless communication unit, the connector can be reduced in size. The sensor can be configured at low cost.

A fourth aspect of the present invention is the wireless sensor setting / testing system according to the third aspect,
The interface includes a data signal transmitted from the circuit board to the wireless communication unit and a signal indicating a transmission state of the data signal, a data signal transmitted from the wireless communication unit to the circuit board, and a transmission state of the data signal. And transmitting and receiving signals.
According to the fourth aspect of the present invention, since the data signal transmitted from the circuit board to the wireless communication unit and the data signal transmitted from the wireless communication unit to the circuit board do not compete with each other, the data signal is reliably transmitted. be able to.

The invention according to claim 5 is the wireless sensor setting / test system according to any one of claims 1 to 4,
Inside the housing is provided a battery storage portion for storing a battery for applying a power supply voltage to a circuit constituted by electronic components on the circuit board, and the power supply voltage of the wireless communication unit is connected via the connector. It is configured to be supplied from the circuit board side.
According to the fifth aspect of the present invention, since the battery for supplying the power supply voltage is not required for the wireless communication unit, the number of components constituting the wireless communication unit can be reduced and the size can be reduced. Can be configured.

A sixth aspect of the present invention is the wireless sensor setting / testing system according to the fifth aspect,
The circuit board is provided with voltage conversion means for converting the voltage of the battery into a DC voltage having a potential different from the voltage,
The voltage converted by the voltage conversion means is configured to be supplied as a power supply voltage to the wireless communication unit.
According to the sixth aspect of the present invention, even if the battery voltage fluctuates, a constant power supply voltage can be applied to the wireless communication unit, thereby ensuring stable operation of the wireless communication unit.

The invention described in claim 7
Electronic parts constituting a detection unit and a control circuit for detecting the occurrence of abnormal phenomena such as heat, smoke, and harmful gases are mounted inside a housing composed of a base member and a main body case engaged with the base member. A circuit board, a battery for applying a power supply voltage to the detection unit and the control circuit, and a wireless communication unit having a wireless communication function are housed, and the circuit board and the wireless communication unit are provided respectively. A wireless sensor setting / testing method configured to be electrically connectable via a connector,
Disconnect the connection between the circuit board and the wireless communication unit by the connector, connect the connector of the setting device or the tester to the connector on the circuit board side or the connector on the wireless communication unit side, and perform data transmission. The circuit board or the wireless communication unit is set or tested.

According to the seventh aspect of the present invention, signals can be transmitted and received between the setting device (tester) and the sensor main body circuit without using wireless communication. Thus, it is possible to avoid the occurrence of interference, and thus it is possible to reliably set various data and test the detector body circuit.
In addition, since the connection between the sensor body circuit and the setting device or tester can be easily performed using the connector, various information setting to the sensor and operation test of the circuit board of the sensor body can be performed efficiently. .

The invention according to claim 8 is the wireless sensor setting / testing method according to claim 7,
The connection between the circuit board and the wireless communication unit by the connector is disconnected, and the setting device or the tester connector is connected to the connector on the wireless communication unit side to perform setting or testing on the wireless communication unit. In this case, a power supply voltage is supplied from the setting device or the tester to the wireless communication unit.
According to the ninth aspect of the present invention, even when the wireless communication unit does not have a power source, various information can be set in the wireless communication unit by the setting device and the operation test of the wireless communication unit can be performed by the test device. .

The invention according to claim 9 is the wireless sensor setting / testing method according to claim 7,
Data transmitted between the control circuit and the setting device or the tester is a data string including a command code,
The circuit board includes a voltage drop detection means for detecting that the voltage of the battery has dropped below a predetermined potential,
When the voltage drop detecting means detects that the voltage of the battery has dropped below a predetermined potential, a predetermined command is transmitted from the setter or the tester to the control circuit, and the control circuit The supply of power supply voltage from the battery to the outside is stopped.

  According to the ninth aspect of the present invention, it is possible to avoid a situation in which the power supply voltage supplied to the outside is lowered and the circuit on the setter or tester side cannot operate due to the consumption of the battery in the sensor. be able to. In addition, it is possible to prevent the operation of the circuit board of the sensor body from becoming unstable by suppressing the consumption of the battery in the sensor. Furthermore, since the sensor can be set by a command, the time required for the setting process can be shortened as compared with a method in which a setting mode is provided for setting.

  According to the present invention, it is possible to realize a wireless sensor setting / testing system and a wireless sensor setting / testing method that can perform various information settings and operation tests reliably and inexpensively. Further, according to the present invention, various information settings and operation tests can be easily performed in a factory.

It is a disassembled perspective view which shows one Embodiment of the photoelectric smoke sensor as an example of the wireless sensor which concerns on this invention. It is a disassembled perspective view which shows the detail of the internal structure of a main body case by inverting the sensor shown in FIG. It is a block diagram which shows the circuit structural example of the sensor of this embodiment. It is a figure which shows the structure of the interface part in the sensor of this embodiment. 5 is a timing chart showing the timing of signals transmitted via the interface unit of FIG. It is explanatory drawing which shows the structural example in the case of connecting a setting device to the main body circuit side of the sensor of this embodiment. (A) is a format of a transmission packet used when requesting data from the setting device to the sensor. (B) is an example of a format of a transmission packet used when responding to the setting device from the sensor in response to a data request. FIG. It is a block diagram which shows the modification of the circuit structure of the sensor of embodiment of FIG.

Hereinafter, an embodiment of a wireless sensor to which the present invention is applied will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an embodiment of a photoelectric smoke sensor as an example of a wireless sensor according to the present invention, and FIG. 2 is an inside view of the sensor with the photoelectric smoke sensor shown in FIG. It is a disassembled perspective view which shows the detail of a structure.
The wireless sensor 10 of the present embodiment is a photoelectric smoke sensor (hereinafter simply referred to as a sensor) that has a wireless communication function and can detect smoke generated by a fire. It is configured to be installed and used. In the description of FIG. 1, the upper side is the upper side and the lower side is the lower side when the sensor 10 is installed on the ceiling surface of the building. In the description of FIG. 2, the sensor 10 is the building. In the state where it is installed on the ceiling surface, the upper side is the lower side, and the lower side is the upper side.

As shown in FIG. 1, the sensor 10 of the present embodiment has a disk-shaped mounting base 11 for mounting on a ceiling surface of a building, and an outer shape that is substantially dome-shaped and covers the entire lower side of the mounting base 11. The main body case 12 engaged with the mounting base 11 as described above, and the main body base 13 and the wireless communication unit 40 housed in an internal housing space formed by the mounting base 11 and the main body case 12 are provided. A housing is formed by the mounting base 11 and the main body case 12.
Although FIG. 1 shows a state in which the main body base 13 is housed in the main body case 12, the main body base 13 can be separated from the main body case 12.

The mounting base 11 constitutes the lower housing wall of the sensor 10, and the mounting base 11 is mounted on a mounting base (not shown) previously installed on a ceiling surface of a building or the like. A screw insertion hole 11a for fixing with screws is provided. Further, two locking portions 11 b for positioning and locking the main body case 12 with respect to the mounting base 11 are provided on the peripheral portion of the mounting base 11.
On the other hand, two locking pieces 13b that can be engaged with the locking portions 11b are provided on the peripheral edge of the main body base 13 at positions corresponding to the locking portions 11b provided on the mounting base 11. The main body base 13 is coupled to the mounting base 11 by engaging the locking piece 13b with the portion 11b.

  Further, as shown in FIG. 1, the main body base 13 is housed inside the main body case 12, and the tips of the four locking claws 13 a provided inside the circumference of the main body base 13 are attached to the inner wall surface of the main body case 12. It is held in a state accommodated in the main body case 12 by being locked to a formed protrusion (not shown). In this state, the locking piece 13 b that can be engaged with the locking portion 11 b of the mounting base 11 and the protruding piece 13 c provided on the peripheral wall end surface of the main body base 13 protrude upward. The mounting base 11 is joined onto the main body base 13 so that the engaging portion 11b is aligned with the engaging piece 13b, and is slightly rotated so that the engaging portion 11b and the engaging piece 13b are engaged with each other so that the joined state is obtained. It is configured to be retained. Since such a coupling structure is common in a sensor, detailed description and illustration of the structure are omitted.

As shown in FIG. 1, the main body base 13 is formed with two battery housing recesses 13 d for housing the battery 30 and a housing recess 13 e for the wireless communication unit 40. The main body base 13 protrudes from two connector insertion portions 13f into which connectors provided at the leading ends of the leads drawn from the battery 30 can be inserted, and a connector 14c provided on a circuit board 14 described later. A connector insertion portion 13g is provided.
Furthermore, the main body base 13 is provided with a locking claw 13h for preventing the battery from coming off so as to protrude upward from the edge of the battery housing recess 13d.
The wireless communication unit 40 includes a circuit board (not shown) on which electronic components that realize a wireless transmission function to be described later are mounted, and a storage case 41 that stores the circuit board. In the storage case 41, a rectangular opening desired by the connector on the circuit board is formed at a position corresponding to the connector insertion portion 33 of the main body base 13, and a rib 41a is provided along the edge of the opening. .

  Next, a configuration for realizing the original smoke detection function of the sensor 10 will be briefly described. As shown in FIG. 2, the sensor 10 includes a circuit board 14 fixed to the main body base 13 (see FIG. 1) inside the main body case 12, and a low height mounted on the circuit board 14. A bottom-cylindrical dark box base 15, a cylindrical insect screen 16 that engages with the inner wall of the dark box base 15, and the dark box base 15 with the insect net 16 sandwiched therebetween form a dark box. A bottomed cylindrical dark box case 17 is provided. The insect screen 16 is formed in a cylindrical shape having a small mesh. In FIG. 2, the main body base 13 and the mounting base 11 are not shown.

  Further, the main body case 12 is formed with a circular opening at the center of the top of the dark box, from which the upper part of the dark box can protrude, and a disk-shaped lid 71 of the dark box case 17 protruding from the opening. A head cover 21 to be joined and engaged with the edge portion is provided, and an opening is formed along the circumferential direction between the head cover 21 and the inner edge portion of the upper wall of the main body case 12. It is configured to function as a smoke inlet 22 that allows it to flow inside. A light emitting portion 23 made of a transparent member formed in a ring shape is provided at the edge of the opening at the center of the main body case 12. In addition, a rod-shaped light guide member formed so as to hang downward is coupled to the light emitting portion 23, and a light incident portion (end surface) at the tip (lower end) of the light guide member is The light emitting diode (LED) mounted on the circuit board 14 is opposed to the light emitting diode (LED).

The circuit board 14 has printed wiring on the surface and inside, and electronic components (not shown) such as elements (transistors, resistors, capacitors) and ICs (semiconductor integrated circuits) constituting a detection circuit are mounted on the upper and lower surfaces. The printed wiring board is configured to be fixed to the main body base 13 (see FIG. 1).
Although not shown, a light-emitting diode (LED) for informing that the sensor is operating is surface-mounted on the circuit board 14, and the emitted light is emitted when the LED is turned on. Guided by the light guide member described above, the light emitting portion 23 is configured to shine in a ring shape. A test function reed switch (not shown) for the transmission function is also mounted on the circuit board 14.

  The dark box base 15 is composed of an upright wall formed on the surface of the base on the inner side of a circular peripheral wall, and a storage portion 51 for holding a light emitting element 18 such as an LED (light emitting diode), and also an upright wall. And a housing 52 for holding the light receiving element 19 such as a photodiode. Although not shown, insertion holes for inserting the lead terminals of the light emitting element 18 and the light receiving element 19 are formed in the inner portions of the storage portions 51 and 52 of the dark box base 15. The light emitting element 18 and the light receiving element 19 are electrically connected to the circuit board 14 by soldering the lead terminal protruding to the predetermined position of the printed board.

The storage 51 and the storage 52 on the dark box base 15 are set so that the optical axes of the light-emitting element 18 and the light-receiving element 19 stored therein do not coincide with each other. That is, the angle of the optical axis of each element is set so that the light emitted from the light emitting element 18 does not directly enter the light receiving element 19.
Further, the storage unit 51 and the storage unit 52 are arranged so that a slight gap is generated between the outermost rising wall among the upright walls constituting the storage unit 51 and the storage unit 52 and the outer peripheral wall of the dark box base 15. The standing wall which comprises is formed, and the edge part of the said insect screen 16 can be inserted in the clearance gap between this standing wall and the outer peripheral wall of the dark box base 15.

  The dark box case 17 includes a disc-shaped lid 71 serving as a base and an annular labyrinth structure 72 provided along the circumferential direction so as to form a smoke detection space at the center. The labyrinth structure 72 has a plurality of light-shielding walls that are Z-shaped, Y-shaped, L-shaped or the like in cross-section, and are formed integrally with the lid 71 and are standing walls arranged in a form similar to the arrangement of turbine fins. It is constituted by. The labyrinth structure 72 has a storage wall that also serves as a light-shielding wall that is fitted to the storage portions 51 and 52 of the light-emitting element 18 and the light-receiving element 19 so as to be able to surround the outside of the storage portions 51 and 52. Is provided.

The plurality of light-shielding walls are arranged and formed so that their end portions overlap each other with a gap therebetween, thereby functioning as rectifying fins that allow smoke from the outside to pass through, and configured so that light does not enter the inside. Yes. Further, in order to suppress the light from the outside from reaching the inside while repeating the reflection at the light shielding wall, the surface is black and the reflectance is low. The dark box case 17 having the labyrinth structure 72 is engaged from above so that the end face of the labyrinth structure 72, that is, the front end of the light shielding wall is joined to the bottom face of the dark box base 15, thereby having a smoke detection space. Is configured.
Since the insect screen 16 is arranged so as to cover the periphery of the labyrinth structure 72, it is possible to prevent insects and dust from entering the dark box.

FIG. 3 shows a circuit configuration example of the sensor 10 of the present embodiment. As shown in FIG. 3, the circuit 100 of the sensor 10 includes a wireless transmission circuit 110 built in the wireless communication unit 40 and a sensor body circuit 120 mounted on a circuit board 14 built in the body case 12. It consists of and. The wireless transmission circuit 110 and the sensor main body circuit 120 are connected by connectors 111 and 121 provided respectively, and are configured to be able to transmit and receive data bidirectionally.
In the self-reporting system using the sensor 10 of the present embodiment, the signal transmitted from the wireless transmission circuit 110 has a wireless signal reception function provided for each predetermined area (for example, one floor). It is received by the repeater, and the repeater is configured to transmit information such as the occurrence of a fire to the receiver for disaster prevention monitoring in a wired manner.

The wireless transmission circuit 110 includes a connector 111, a microprocessor 112 as a control IC (semiconductor integrated circuit), and a wireless transmission unit 113. The microprocessor 112 includes a RAM (Random Access Memory) as an on-chip storage device, An EEPROM (electrically writable / erasable read only memory) for storing a unique identification code (ID) and the like is incorporated. Further, the wireless transmission unit 113 is configured to perform transmission conforming to the standard of the low power security system using the 400 MHz band as a communication frequency band.
In this embodiment, since the wireless transmission circuit 110 has only a wireless transmission function and no wireless reception function, the repeater can have only a wireless reception function. The wireless transmission circuit 110 does not have a data reception function, but may be configured to have a function (carrier sense function) for detecting a carrier signal as a signal carrier wave. This carrier sense function may be provided in the sensor body circuit 120. By providing the carrier sense function, when an abnormality of the wireless transmission circuit 110 is detected, it becomes easy to find the part of the abnormality.

The sensor body circuit 120 includes a connector 121, a voltage regulator 122 that receives a battery voltage VBAT from the battery 30 and generates a DC voltage suitable for an IC constituting the circuit, a microprocessor 123 as a control IC, a battery voltage. The detection unit 124, the above-described light emitting element 18 and its drive circuit (driver), the light receiving element 19, and a fire detection unit 125 including a detection circuit, and a display unit 126 including an LED lamp are provided.
Among these, the microprocessor 123 includes a CPU 123a, an EEPROM that stores a program memory executed by the CPU, and an on-chip storage unit 123b that provides a work area for the CPU. The microprocessor 112 of the wireless transmission circuit 110 has the same configuration. The storage unit 123b may be an external general purpose ROM or RAM. The fire detection unit 125 may include a heat sensing element such as a thermistor, and may be configured to detect fire in addition to smoke.

  When the battery voltage detection unit 124 detects that the battery voltage has become equal to or lower than a predetermined voltage value, the microprocessor 123 of the sensor body circuit 120 transmits information notifying the battery to the wireless transmission circuit 110 to the outside. A command code to be commanded (hereinafter simply referred to as a command) is sent. In addition, when the fire detection unit 125 detects smoke having a predetermined concentration or more, the microprocessor 123 outputs a signal for turning on or blinking the lamp of the display unit 126 to a drive circuit (driver) of the display unit 126 and a wireless transmission circuit. A command for instructing 110 to send information notifying the occurrence of a fire to the outside is sent.

  In this embodiment, the battery voltage VBAT from the battery 30 is directly supplied to the battery voltage detection unit 124, the fire detection unit 125, and the display unit 126, and the voltage regulator 122 converts the battery voltage VBAT to the microprocessor 123. DC voltage VREG is supplied. Further, since the voltage of the battery voltage VBAT varies, the voltage VREG from the voltage regulator 122 is supplied to the microprocessor 123 in order to operate the microprocessor 123 stably. The battery voltage detection unit 124, the fire detection unit 125, and the display unit 126 may be configured to supply the voltage VREG from the voltage regulator 122 instead of from the battery voltage VBAT. Therefore, the battery voltage VBAT from the battery 30 is directly supplied.

  In this embodiment, the power supply voltage is supplied from the detector body circuit 120 side to the wireless transmission circuit 110 via the connectors 111 and 121. A battery for supplying a power supply voltage may be built in the wireless transmission circuit 110 in the wireless communication unit 40. However, in this case, the wireless transmission unit 40 is enlarged, but as in this embodiment. By supplying the power supply voltage from the sensor body circuit 120 side to the wireless transmission circuit 110, the wireless communication unit 40 can be reduced in size.

Next, specifications of the interface unit 130 for signals transmitted and received via the connectors 111 and 121 will be described.
As shown in FIG. 4, there are six lines of the interface unit 130 in the sensor of this embodiment, two of which are power supply lines and four of which are signal lines. The power lines L1 and L2 are used to supply the voltage VREG generated by the voltage regulator 122 and the ground potential GND from the sensor body circuit 120 side to the wireless transmission circuit 110 side. Of the signal lines L3 to L6, two of them transmit signals RS and TD from the wireless transmission circuit 110 side to the sensor body circuit 120 side, and the remaining two are from the sensor body circuit 120 side to the wireless transmission circuit 110 side. Used to transmit signals CD, RD.

The signal RS is a signal for the microprocessor 112 of the wireless transmission circuit 110 to activate the microprocessor 123 of the sensor body circuit 120, and the signal TD is a data signal transmitted from the microprocessor 112 to the microprocessor 123. . The signal CD is a signal for the microprocessor 123 of the sensor body circuit 120 to activate the microprocessor 112 of the wireless transmission circuit 110, and the signal RD is a data signal transmitted from the microprocessor 123 to the microprocessor 112. It is. The data signals TD and RD are signals that transmit a binary code, and are transmitted by a serial transmission method.
The data transmitted from the sensor main body circuit 120 to the wireless transmission circuit 110 includes data notifying the failure of the sensor, data notifying the battery exhaustion, data notifying that the reed switch is turned on, and the like. The data transmitted to the instrument main body circuit 120 includes a command for periodically requesting the state information of the sensing unit.

FIG. 5 shows a procedure of transmission timings of the signals RS and TD and the signals CD and RD as viewed from the start side.
As shown in FIG. 5, the transmission of the data signal TD or RD starts at the timing t2 after Ts1 from the timing t1 when the signal RS or CD rises by the circuit on the transmission start side, and the transmission end time t3 of the data signal TD or RD. The signal RS or CD falls at timing t4 after Ts2. Then, before the maximum reception waiting time Trw elapses from timing t4, the signal CD or RS is raised by the circuit on the reception activation side (timing t5), and transmission of the data signal RD or TD starts at timing t6 after Ts1. Then, the signal CD or RS falls at a timing t8 Ts2 after the transmission end time t7 of the data signal RD or TD.

From the timing chart of FIG. 5, it can be seen that the data signal TD or RD is transmitted during the period when the signal RS or CD is at the high level. Therefore, the signal RS or CD can be regarded as an enable signal indicating the effective period of the transmission data signal. Instead of the enable signal, a clock signal may be supplied. In this case, since a through current flows when the driver that outputs the clock signal is switched, the current consumption increases, as in this embodiment. It is desirable to use a signal indicating the effective period at a high level or a low level.
If no signal is transmitted from the reception activation side circuit before the maximum reception waiting time Trw elapses, the transmission activation side circuit performs a retransmission process. The program is configured to set error information when there is no response even if it is retransmitted twice.

  The format of the data signal to be activated and transmitted from the sensor body circuit 120 side to the wireless transmission circuit 110 includes a start bit, a call request command, a type code indicating the type of a device on the transmission side, a code indicating a state, a call reason, and a battery Battery information such as battery life, battery voltage, end bit, error check code, etc. The format of the data signal to be activated and transmitted from the wireless transmission circuit 110 side to the sensor body circuit 120 includes a start bit, a request command, a data part, an end bit, an error check code, and the like.

  By the way, as described above, the sensor 10 of the present embodiment is configured such that the wireless transmission circuit 110 and the sensor main body circuit 120 can be connected by the connectors 111 and 121. Therefore, the connector 111 on the wireless transmission circuit 110 side. Is removed from the connector 121 on the sensor body circuit 120 side. Instead, as shown in FIG. 6, the connector 141 provided on the setting device (tester) 140 side is replaced with the connector 121 on the sensor body circuit 120 side. By connecting, signals can be transmitted and received between the setting device (tester) 140 and the sensor main body circuit 120. In this case, the connector 141 is the same type as the connector 111.

The data set in the detector main body circuit 120 by the setting device 140 includes the type (type) of the sensor, the sensitivity type, the serial number, the address of the sensor in the self-warning system, sensitivity adjustment data, and battery voltage drop. In this embodiment, the setting data is transmitted together with the setting command. When the microprocessor 123 receives this, the setting data is stored in the nonvolatile memory of the storage unit 123b.
The test of the sensor body circuit 120 by the tester includes a test for checking whether the sensor operates according to the information set by the setting unit 140, a communication function test for checking whether a response command is correctly returned when a predetermined request command is input, There is a sensing function test for checking whether or not the sensor main body circuit 120 operates normally and outputs a command transmission command notifying the abnormality to the wireless communication unit.

As shown in FIG. 6, the setting device (tester) 140 is connected to a personal computer 142 that stores a setting (test) processing program and setting (test) data, and is connected to the personal computer 142 via an RS232C cable 143. It comprises a conversion circuit 144 that converts interface specification data into data suitable for the sensor, a battery 145 that supplies a power supply voltage to the conversion circuit 144, the connector 141, and the like.
The setting device (tester) 140 can transmit and receive signals to and from the wireless transmission circuit 110 by changing the connector 141 to the same type as the connector 121 and connecting the connector 111 thereto. It can also be.

  When the setting device (tester) 140 is connected to the wireless transmission circuit 110, the battery voltage of the battery 145 is supplied as a power supply voltage to the wireless transmission circuit 110 via the connector 111. On the other hand, when the setting device (tester) 140 is connected to the sensor main body circuit 120, the conversion circuit 144 can be configured to operate upon receiving the supply of power supply voltage from the sensor main body circuit 120 side. However, if the converter circuit 144 is operated by receiving the supply of power supply voltage from the sensor body circuit 120 side, the battery in the sensor 10 is consumed, so the converter circuit 144 is connected to the battery on the setter 140 side. It may be configured to operate at 145.

In setting or testing, it is also possible to supply the power supply voltage from the setting device (tester) 140 side to the detector main body circuit 120. As a result, various information settings and operation tests can be performed without inserting a battery into the sensor 10. However, in the case of an operation test, it is difficult to perform an operation test on the battery voltage detection unit 124, the fire detection unit 125, and the display unit 126. Therefore, it is desirable to perform the operation test with a battery inserted in the sensor 10.
Data set in the wireless transmission circuit 110 by the setting device 140 includes an identification code (ID), a frequency used for wireless transmission, frequency adjustment data, a periodic transmission cycle, radio wave intensity, and the number of transmissions. The periodic transmission function periodically notifies the disaster prevention receiver that the sensor is normal, and sends a command including data related to the internal state of the sensor such as ID and battery life, for example, every 22 hours. To do. The test of the wireless transmission circuit 110 by the tester is performed according to a test for checking whether the signal radio wave is transmitted at the frequency and radio wave intensity set by the setting unit 140, or according to a command given from the tester instead of the sensor body circuit 120. There are tests to check whether data is transmitted correctly.

In the present embodiment, even when setting the main circuit 120 of the sensor 10 by the setting device (tester) 140, a new dedicated command is prepared and used for transmission so that the command can be transmitted. A format was defined.
FIG. 7A shows the format of a transmission packet used when requesting data from the setting device (tester) 140 to the main body circuit 120 of the sensor 10, and FIG. 7B corresponds to the data request. The format of the transmission packet used when responding from the main body circuit 120 of the sensor 10 to the setting device (tester) 140 is shown.

As shown in FIG. 7A, the transmission packet (request packet) used when requesting data from the setting device (tester) 140 to the main body circuit 120 of the sensor 10 consists of 32 bytes, and the start bit STX. , A request command TXX, a data part (including an empty area), an end bit ETX, and an error check code BCC.
Further, as shown in FIG. 7B, the packet (response packet) used for the response consists of 32 bytes, and includes a start bit STX, a response command AXX, a communication result storage area, a data part (including an empty area), It consists of an end bit ETX and an error check code BCC. The “communication result storage area” stores “OK” indicating that the request packet has been correctly received or “NG” indicating that the request packet has not been correctly received.

The packet request command TXX in FIG. 7A includes, for example, a command requesting a battery voltage value detected by the battery voltage detection unit 124, a command requesting an analog value detected by the fire detection unit 125, and an EEPROM There are a command for requesting data, a command for requesting data writing to the EEPROM, a command for requesting erasure of data in the EEPROM, and the like. The data portion of the request packet stores an EEPROM address, write data, and the like.
Examples of the packet response command AXX in FIG. 7B include a response command to a battery voltage request command, a response command to an analog value request command, and a response command to an EEPROM data request command. The data portion of the response packet stores a battery voltage value, an analog value, an EEPROM address, read data, and the like according to the command.

The format of the transmission packet (request packet) used when requesting data from the setting device (tester) 140 to the wireless transmission circuit 110 of the sensor 10 is the same as the packet of FIG. The packet (response packet) used for the response to the setting device (tester) 140 can be the same as the packet in FIG.
As a request command TXX to be included in a transmission packet from the setting device (tester) 140 to the wireless transmission circuit 110, for example, a command requesting transmission by frequency A, a command requesting transmission by frequency B, a command requesting an ID code, There are a command requesting that the transmission frequency be shifted in the positive direction, a command requesting that the transmission frequency be shifted in the negative direction, a command requesting data in the EEPROM, and a command requesting the state of the device.
Examples of the response command AXX to be put in the packet from the wireless transmission circuit 110 to the setting device (tester) 140 include a response command to the EEPROM data request command and a response command to the status request command. The data includes “no abnormality”, “ROM error occurrence”, “RAM error occurrence”, “RTC (real time clock) error occurrence”, and the like.

In a conventional sensor, a setting mode is provided in the main circuit, and when setting or testing is performed, a setting mode start command is transmitted or a dedicated mode terminal is set to a predetermined state to temporarily enter the setting mode. The process was started after the migration. On the other hand, the sensor of the present embodiment does not have a setting mode, and various information settings and operation tests to the sensor body circuit 120 can be performed by transmitting commands without changing the mode. Thereby, the time required for the setting / testing process can be shortened.
Here, the setting mode means an operation state in which a part of the functions in the normal monitoring state is restricted in order to set the sensor body, and the absence of the setting mode means in the normal monitoring state. This means that the function can be set by a command without any restrictions.

(Modification)
Next, a modification of the above embodiment will be described with reference to FIG.
In this modification, a switch 127 is provided in the middle of the power supply line between the voltage regulator 122 of the sensor main body circuit 120 and the connector 121, and the microprocessor 123 sets an ON / OFF control signal ON / OFF of the switch 127. It is configured to generate and output. Further, when the battery voltage detection unit 124 detects that the battery voltage has dropped below a predetermined potential, the microprocessor 123 changes the on / off control signal ON / OFF to a low level to turn off the switch 127. Thus, the power supply voltage VREG is not supplied to the outside via the connector 121.
Thereby, it can be avoided that the operation of the wireless communication unit 40 becomes unstable due to a decrease in the power supply voltage. Further, it is possible to prevent the operation of the microprocessor 123 from becoming unstable by suppressing the consumption of the battery 40 on the sensor side.

When the sensor main body circuit 120 and the setting device (tester) 140 are connected by the connection of the connector 141 of the setting device (tester) 140 and the connector 121 of the sensor 10, the setting device (tester) 140 transmits a command for requesting detection information of the battery voltage detection unit 124 to the microprocessor 123. When the setting device (tester) 140 determines that the battery voltage drop information is included in the response packet sent from the microprocessor 123, the power is supplied to the microprocessor 123 of the sensor body circuit 120. The output stop command is transmitted, and the power supply voltage of the conversion circuit 144 is switched to the battery voltage of the battery 145.
As a result, it is possible to avoid a situation where the conversion circuit 144 does not operate due to a decrease in the power supply voltage. Further, it is possible to prevent the operation of the microprocessor 123 from becoming unstable by suppressing the consumption of the battery 40 on the sensor side.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, Of course, it can change suitably. For example, in the above-described embodiment, the present invention has been described as applied to a smoke sensor (thermal smoke sensor), but the present invention can also be applied to a heat sensor, a gas sensor, or the like.
In the above-described embodiment, the case where a wireless communication unit having only a transmission function is incorporated has been described. However, some embodiments of the present invention have a sensing function including a wireless communication unit having a transmission function and a reception function. It may be applied to a vessel. Even if the wireless communication unit has a transmission / reception function, if the sensor is used to perform various information settings and operation tests with the battery inserted, the wireless communication unit is removed and the setting device (tester) 140 is detected. Battery consumption can be reduced by connecting and receiving data and transmitting and receiving data. In addition, setting and testing by connecting a setting device (tester) directly to the sensor body can complete the setting and testing in a shorter time than when setting and testing by wireless communication.

10. Detector (wireless smoke detector)
DESCRIPTION OF SYMBOLS 11 Mounting base 12 Main body case 13 Main body base 14 Circuit board 15 Dark box base 17 Dark box case 18 Light emitting element 19 Light receiving element 22 Smoke inlet 23 Light emission part 40 Wireless communication unit 110 Wireless transmission circuit 111 Connector 112 Microprocessor 113 Wireless transmission part 120 Sensor Body Circuit 121 Connector 122 Voltage Regulator 123 Microprocessor 124 Battery Voltage Detection Unit 125 Fire Detection Unit 126 Display Unit 140 Setting Device, Tester

Claims (9)

An electronic device constituting a sensor main body circuit having a detection unit for detecting the occurrence of an abnormal phenomenon such as heat, smoke, harmful gas, etc. inside a housing composed of a base member and a main body case engaged with the base member A circuit board on which components are mounted and a wireless communication unit having a wireless communication function are housed,
A wireless sensor configured such that the circuit board and the wireless communication unit can be electrically connected to each other via a connector;
A setting device or tester connectable to the connector on the circuit board side or the connector on the wireless communication unit side in a state where the connection between the circuit board and the wireless communication unit by the connector is disconnected;
A wireless sensor setting / testing system characterized by comprising:   The wireless sensor unit according to claim 1, wherein the wireless communication unit includes a transmission circuit that transmits a signal radio wave to the outside, and does not include a reception circuit that receives a signal radio wave from the outside. Test system.   3. The wireless sensor setting / testing system according to claim 1, wherein the circuit board and the wireless communication unit include an interface for transmitting and receiving signals to and from each other via the connector.   The interface includes a data signal transmitted from the circuit board to the wireless communication unit and a signal indicating a transmission state of the data signal, a data signal transmitted from the wireless communication unit to the circuit board, and a transmission state of the data signal. The wireless sensor setting / testing system according to claim 3, wherein the wireless sensor is transmitted and received. Inside the housing, a battery storage unit is provided for storing a battery for applying a power supply voltage to a circuit configured by electronic components on the circuit board,
5. The setting of the wireless sensor according to claim 1, wherein the power supply voltage of the wireless communication unit is configured to be supplied from the circuit board side via the connector. Test system. The circuit board is provided with voltage conversion means for converting the voltage of the battery into a DC voltage having a potential different from the voltage,
6. The wireless sensor setting / testing system according to claim 5, wherein the voltage converted by the voltage conversion means can be supplied to the wireless communication unit as a power supply voltage. Electronic parts constituting a detection unit and a control circuit for detecting the occurrence of abnormal phenomena such as heat, smoke, and harmful gases are mounted inside a housing composed of a base member and a main body case engaged with the base member. A circuit board, a battery for applying a power supply voltage to the detection unit and the control circuit, and a wireless communication unit having a wireless communication function are housed, and the circuit board and the wireless communication unit are provided respectively. A wireless sensor setting / testing method configured to be electrically connectable via a connector,
Disconnect the connection between the circuit board and the wireless communication unit by the connector, connect the connector of the setting device or the tester to the connector on the circuit board side or the connector on the wireless communication unit side, and perform data transmission. A method for setting and testing a wireless sensor, comprising setting or testing a circuit board or the wireless communication unit.   The connection between the circuit board and the wireless communication unit by the connector is disconnected, and the setting device or the tester connector is connected to the connector on the wireless communication unit side to perform setting or testing on the wireless communication unit. The method for setting and testing a wireless sensor according to claim 7, wherein a power supply voltage is supplied from the setting device or the tester to the wireless communication unit. Data transmitted between the control circuit and the setting device or the tester is a data string including a command code,
The circuit board includes a voltage drop detection means for detecting that the voltage of the battery has dropped below a predetermined potential,
When the voltage drop detecting means detects that the voltage of the battery has dropped below a predetermined potential, a predetermined command is transmitted from the setter or the tester to the control circuit, and the control circuit 8. The wireless sensor setting / testing method according to claim 7, wherein the supply of the power supply voltage from the battery to the outside is stopped.

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